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1. 发明专利

GB337032A Improvements in or relating to the automatic or semi-automatic control of synchronous dynamo-electric machinery 未知
公开(公告)号：GB337032A
公开(公告)日：1930-10-27
申请号：GB2282529
申请日：1929-07-25
申请人： REYROLLE A & CO LTD , DOUGLAS EDWARD LAMBERT
IPC分类号： H02P9/42
摘要： 337,032. Reyrolle & Co., Ltd., A., and Lambert, D. E. July 25, 1929. Synchronizing dynamo-electric machines; running generators in parallel; regulation, automatic. -The frequency of a system particularly where A.C. generators in parallel are employed is controlled by apparatus mainly as described in. Specification 303,779 modified inasmuch as a contact making rotary synchroscope is included. The present invention is also applicable to the control of A.C. motors when a source of E.M.F. dependent on the speed of the motors is available. The frequency-controlling means are combined with load-sharing arrangements for a group of parallel-operated machines so that the load-sharing device associated with each machine prevents alteration of the speed of the machine when the share of the load taken by such machines be varied beyond predetermined limits so that alteration would tend to cause the machine to deviate still further from such limits. The apparatus may be used for the automatic synchronizing of an additional machine, when required, and the arrangement may be applied to the automatic remote control of frequency and load from a control station of a system supplied from a number of generating substations and for hand-control of the distribution of load between the various substations, with or without automatic synchronizing of additional machines in each station under the control of a suitable selective remote control system. Fig. 1 shows the application of the apparatus to the frequency and load-sharing control of a system employing two A.C. generators in parallel. Load-sharing devices M of the kind described in Specification 296,815 are incorporated. Two A.C. generators A are shown connected to A.C. mains by main circuit-breakers L. A contact-making rotary synchroscope F together with relays J, O, and timedelay relay P together with the source of E.M.F. of constant frequency D in the form of a A.C. motor driving a single-phase generator form the control apparatus common to the system. The movable member of the synchroscope operates contacts by, for example, mounting a conducting member longitudinally on an insulated cylinder rotating with the pointer E3 to co-operate with fixed segmental brushes arranged in three coaxial rings surrounding the insulated cylinder. Various ways in which the synchroscope may cause the transmission of the speed controlling currents may be employed as, for examples, the synchroscope pointer may be provided with a friction device which makes one or the other of two sets of contacts in accordance with the direction of rotation of the pointer. An interrupter may then be incorporated to cause the transmission of impulses instead of continuous current. As shown in Fig. 1, three rings of segmental brushes are concentrically arranged in one plane and the conducting member E4 is carried by the pointer in a radial direction. The outer ring contains four brushes F, Fl, F2, F3. The middle ring contains one continuous brush G1 and the inner ring contains three brushes H, H1, H2. When the apparatus is being used to control the frequency of a system with A.C. generators working in parallel the coil E1 is energized from the source of current of constant frequency D, D1 and the coil E2 is connected across bus-bars C, C1 which are connected through plugs B, B1 to the leading and lagging phases A2, A4 of potential transformers A1 associated with each generator. If the system frequency is higher than the standard frequency the synchroscope pointer E3 rotates say in a clockwise direction. Brushes F, F1, F2 and F3 may be called in order " Make," " Lower speed." " Break," and " Raise speed," contacts. The middle brush G1 is permanently connected to the negative side of D.C. bus-bars C3, C4. When the pointer E3 is on the " Make " contact the operating coil of a relay J will be energized and auxiliary contacts J1, J2 closed. At the same time a retaining- circuit will be made through contacts J3. When the pointer moves to brush Fl, a current will be transmitted through E4, F1, contacts J1, through bus-bar C5, through auxiliary switches L2, on main circuit-breakers L through contacts M1 on the load-sharing devices if the loads on the machines are not too low, through operating coils K1, through auxiliary switches L4 and contacts 02 to the positive D.C. bus-bar C4. Energization of coil K1 closes a circuit to motors K2 which operate to vary the speed governor on say the prime mover driving the generators. When the pointer E3 passes to the "break" contact F2 the coil J is short-circuited and further movement of the pointer to brush F3 causes no transmission of current as contacts J1, J2 are open. The operation is repeated if the pointer continues to revolve in a clockwise direction. When the pointer rotates in the opposite direction the " raise speed " bus-bar C6 is energized and by energization of coil K the motors K2 actuate the speed governor in a direction to raise the generator frequency. The load-sharing devices M' are described in the Specification 296,815. When it is desired to synchronize an additional machine the synchronizing-plugs B2, B3, B4, B5 axe inserted. The circuit-breaker of the incoming machine will be open and the closure of plug contacts B2 energizes operating coil 0 to disconnect the source of constant frequency current D, D1, and energize coil E1, of the synchroscope from the leading phase A2 of the potential transformer on the incoming machine through contacts 01, and at the same time open contacts 02. The pointer E3 revolving in a clockwise direction passes in order over inner brushes H, III and H2 when the incoming machine is running up to speed. When the contact. E4 engages with brush H1 the coil P of a time-delay relay is energized and closes auxiliary contacts P1, but on passing on to brush H2 coil P is short-circuited and contacts PI open. At the same time the brushes F, F1 F2, F3 are operating as before to bring the incoming machine up to speed, the coils K1, K1 now being energized through auxiliary switches L2, L3 and L4 direct from the D.C. bus-bars C3, C4. When the incoming machine is just over speed the pointer slowly rotates in an anti-clockwise direction and after passing over brush H2 passes to brush HI energizes coil P and due to the slow rotation allows the relay P to close contacts P1. When the pointer reaches brush H if moving sufficiently slowly a current is allowed to flow from brush G1 through E4, H1, contacts PI, bus-bar C7 through closing coil L1 of main circuit-breaker through plug contacts B3 to D.C. bus-bar C4 thus closing breaker L and connecting generator A with the A.C. mains. An arrangement adapted to control the frequency of two A.C. machines running in parallel is similar to that shown in Fig. 1, except that no provision is shown for synchronizing an incoming machine and the load-sharing device takes the form of a relay which may be of the beam type having two operating coils acting differentially on the contact-operating beam.

2. 发明专利

GB344827A Improvements in or relating to remote metering systems 未知
公开(公告)号：GB344827A
公开(公告)日：1931-03-02
申请号：GB288831
申请日：1929-11-29
申请人： REYROLLE A & CO LTD , BRUCE HAMER LEESON , JAMES ALFRED HARLE , DOUGLAS EDWARD LAMBERT
IPC分类号： G08C19/22
摘要： 344,827. Protective cut-out systems. REYROLLE & CO., Ltd., A., Hebburn-on- Tyne, LEESON, B. H., Waverley, Tynemouth, HARLE, J. A., 221, Jesmond Road, Newcastle-on-Tyne, and LAMBERT, D. E., Sholebrook, Sauncey Avenue, Harpenden, Hertfordshire. Nov. 29, 1929, No. 2888/31. Divided on 344,484. [Class 38 (v).] A system for obtaining at a control station an indication of the readings of a meter at a remote station, which system may be used for indicating faults in connection with impedance or like protective systems, comprises the combination with a device moving over the meter scale at the remote station, of an indicator device moving over a corresponding scale at the control station, means for driving the two devices at corresponding speeds, and means whereby alternating or oscillating signalling currents of suitable frequency transmitted between the two stations cause the simultaneous starting of the two devices at corresponding scale positions and the simultaneous stopping of the two devices when the first device reaches the position occupied by the meter pointer. The signalling currents may be transmitted directly over an alternating current channel of communication connecting the two stations, as, for example, a long distance telephone circuit, or the transmission may be effected by means of high frequency currents by direct transmission of these currents or by modulating a carrier-wave system at suitable frequencies. In the construction shown in Fig. 1, the meter pointer 20 at the remote station is provided with a contact 21 located between two contacts 26, 27 on a timing device 25 which is adapted to be driven, through gearing, from a member 32 of a reversing clutch. The members 33, 34 of the clutch are directly coupled to a constant-speed driving element 35, and are adapted to engage the member 32 according to whether coil 36 or 37 is energized. The control station is provided with similar driving means for use in driving a pointer 50 across a scale corresponding to the meter scale. The energization of the coils 56, 57 is controlled by receivers 86, 87 tuned, respectively, to the frequencies of alternating current generators 76, 77 at the remote station. Movement of the pointer 20 in a forward direction completes, at contacts 21, 26 a circuit through battery 75, coil 36 and relay 70 The clutch then operates to drive the timing device 25 until the contacts 21, 26 separate, and relay 70 at contacts 72 connects generator 76 to the channel of communication 80 whereby receiver 86 responds and energizes coil 56 to cause movement of the pointer 50. This pointer moves in synchronism with the pointer 20. In the arrangement shown in Fig. 2 the meter readings are obtained intermittently at the will of an operator. The meter pointer 100 is provided with a contact 101 co-operating with a contact 111 on a timing device 110 which is adapted to be driven over the meter scale against the action of a spring. A similar device 130 is provided at the control station and coaxial therewith is an indicator 140 which is driven by the device 130 against spring means, and is provided with an electromagnetically-released clamp for holding it in position when not engaged by the timing device. At the remote station a generator 176 and receiver 175 are provided for co-operation, respectively, with a receiver 165 and a generator 160 at the control station. To obtain a reading, the operator presses the switch 151, whereby the clutch coil 138, the clampreleasing coil 145, and a relay 155 are energized. This relay at contacts 157 connects the generator 160 and the channel of communication 170 whereby the receiver 175 acts to energize the clutch coil 118. The devices 110, 130 are now driven synchronously until contracts 111, 101 engage, whereupon the generator 176 is connected to the channel 170 so that the receiver 165 acts to energize relay 166, this relay at contacts 167 opening a circuit so that the energized coils and relays are de-energized. The timing devices 110, 130 return to normal, the pointer 140 remaining in the indicating position. In applying the invention to remote fault position indication in connection with impedance or like protective systems, the initial operation of a protective relay in response to a fault may be caused to start the movement of a timing device at a control station, the device being stopped when the relay contacts for tripping the circuit-breaker are operated. The circuits are so arranged that the timing device is reset to zero in the event of the fault being cleared by another protective relay elsewhere on the protected circuit. The control room is provided with a number of indicators associated, respectively, with protective relays, the clearance of a fault causing the indicator associated with the relay nearest the fault which operated its circuitbreaker, to give an indication of the fault position. Specification 334,263, [Class 40 (i), Electric signalling systems &c.], is referred to.

3. 发明专利

GB334263A Improvements in or relating to electric remote control systems 未知
公开(公告)号：GB334263A
公开(公告)日：1930-09-01
申请号：GB1691829
申请日：1929-06-01
申请人： REYROLLE A & CO LTD , BRUCE HAMER LEESON , WILLIAM ANDERSON , DOUGLAS EDWARD LAMBERT
IPC分类号： H02J13/00
摘要： 334,263. Reyrolle & Co., Ltd., A., Leeson, B. H., Anderson, W., and Lambert, D. E. June 1, 1929. Selective distant control and signalling systems.-An electric selective remote control system comprises the combination with two contact-making selectors disposed respectively at, the control station and at the controlled station and to which corresponding step-by-step movements are to be imparted, of a rotary controlling drum for each selector, the drum performing a series of sequential angular movements for each stepped movement of the selector, means being provided for ensuring the correct relationship between the movements of the two drums. Control of selectors, Figs. 1, 2, 3 and 5. At the control station a selector A to which stepby-step movements are imparted to bring it successively into a number of selected positions respectively associated with substation apparatus to be controlled, is provided with a peripherallyslotted disc A adapted to be driven by two diametrically-opposite pins C , C on one side of a pin wheel C. The pins C C cause each stepped movement of the selector from one selected position to another to be made in two parts (half notch movements). The wheel C is also provided with pins C - - C arranged in two circular rows at different radii. These pins cooperate with a slot E in a plunger bar E moved radially by an escapement coil E, so that when the coil is energized the slot E lies in the path of the pins in the inner row and when the coil is de-energized the slot is in the path of the outer row of pins. The pin wheel C is carried by the shaft of a rotary drum D which is under the influence of a spiral spring G , Fig. 5, tending to rotate the drum. One end of the spring is fixed to a shaft G carrying a worm wheel G engaging teeth on the periphery of the wheel C. The outer end of the spring is attached to a cage G provided with teeth engaging a worm wheel H carried by a bracket H rotatably mounted on the shaft G . The bracket H is normally acted upon by a spring H to bring a contact H between two fixed contacts J in the circuit of a motor J. A worm J on the motor shaft engages with the wheel H . The arrangement is such that the motor acts to wind up the spring, the contacts H . J' being opened when the force exerted on the wheel H by the motor and the spring G exceeds the tension of the spring H . The substation is similarly provided with a selector a, a pin wheel c, a rotary drum d, an escapement wire e, spring-winding means g. In a modification the wheels C, c instead of being provided with pins for engagement in slots in the plunger bars E , e , are formed with slots for engagement with pins on the plunger bars. The control station apparatus is connected to the substation by two wires K, K'. The selector A is provided with a contact segment A5 coacting with a pair of spring contacts A6, the contacts A5, A6 being closed in all selected positions other than the normal zero position of the selector. The drum D has three contacts D , D , D coacting respectively with pairs of spring contacts D , D , D . Three hand-switches are provided at the control station, a switch M for step-bystep selection, a switch N for " express selection," and a switch L adapted to control the establishment of a metering circuit. The switch M operates contacts M through a lever M , one end of which normally rests against a spring-controlled flap M carried by a disc M on the shaft D'. Selection of apparatus at the controlled station, Figs. 1, 2, and 3. Depression of push M closes contacts M and energizes the escapement coil E so that the bar E moves to allow the pin C to pass through the slot E', the drum D making a small angular movement until arrested by the pin C engaging the bar. The push M being released, the coil E is de-energized so that the bar E moves inwardly to permit pin C to pass through the slot E'. The drum makes a second angular movement until stopped by the pin C , the pin C at the same time causing the selector A to 'move through its first " halfnotch " movement. This closes contacts D, D whereby a circuit is complete through the escapement coils E, e, the pilot wires K, K and the drum contacts D , D and d , d Both plunger bars E , e move outwardly allowing both drums to rotate. The drum D is arrested almost immediately by means of the pin C , but the drum d continues to rotate bringing a pin c into engagement with a slot in the disc a so that the substation selector a makes a " halfnotch " movement. The rotation of the drum d is arrested by means of pin c‹ and at the same time drum contacts d , d open to break the circuit to the coils E, e. The plunger bars then move inwardly allowing pins C , c to pass through the slots and the drums to rotate until arrested by the pins C , c'. If the meter switch L has been operated the escapement coil circuit is broken and the drums and selectors remain at rest in their half-notch position. In this position contacts D , D and d , d are closed. If however the switch L is in normal position the coils E, e are again energized and the bars E , e act to allow passage of the pins C , c , but the drum D almost immediately stops due to pin C and the drum d rotates until arrested by the pin c , the pin c at the same time driving the selector a through its second half-notch movement, at the end of which the contacts d , d are opened. The coils E, e are therefore again de-energized, so that the bars E , e move inwardly to allow passage of the pins C , c , the drums completing their rotation until arrested by the pins C , c in the normal zero position, and the selector A being driven through its second half-notch movement by the pin C2. The pin c may replace the pin c , if it is desired that the two selectors should perform their second half-notch movements simultaneously. For express selection the push N is provided, the contacts of which are in series with contacts A , A , D , D . Depression of the push N causes a series of selecting movements to be performed until the push is released or the normal zero position is reached. In a modification both stepby-step selection or express selection is obtained by a single hand-push, step-by-step selection being obtained by a depression and release movement and express selection by depressing and twisting the push. The invention is described in association with electric remote control systems in which metering circuits can be established when the selectors are in the half-notch positions. These systems form the subject-matter of the invention claimed in Specification 334,846, and are described in the abridgment of that Specification. Specifications. 307,379, 307,381, 307,383, 317,422, 333,172, and 334,264 also are referred to.

4. 发明专利

GB334846A Improvements in or relating to electric selective remote indicating and metering systems 未知
公开(公告)号：GB334846A
公开(公告)日：1930-09-01
申请号：GB1883630
申请日：1929-06-01
申请人： REYROLLE A & CO LTD , BRUCE HAMER LEESON , WILLIAM ANDERSON , DOUGLAS EDWARD LAMBERT
IPC分类号： H02J13/00
摘要： 334,846. Reyrolle & Co., Ltd., A., Leeson, B. H., Anderson, W., and Lambert, D. E. June 1, 1929. Divided on 334,263. Selective distant control and signalling. - In an electric selective remote indicating and metering system in which two selectors are provided, one at a control station and the other at a substation, corresponding step-by-step movements are imparted to the selectors to obtain selective indications of the condition of the substation apparatus, and means are provided whereby the movements of the selectors may be arrested in half-way or " halfnotch " positions in which positions metering circuits can be established to indicate meter readings at the control station. The control station may be provided with a group of selfrecording meters and with apparatus for initiating automatically at predetermined intervals a complete selecting and metering cycle whereby the records on all the meters are periodically corrected. The invention is described in association with selector control arrangements forming the subject-matter of the invention described in Specification 334,263 and which are described in the abridgement of that Specification. Remote control system, Fig. 6. In this arrangement the control station and substation are connected by four pilot wires' p - - P . The control station is provided with a rotary selector 300 driven from a drum 30 which performs a series of sequential angular movements under the control of an electromagnetically operated escapement mechanism employing a coil 311. The substation apparatus comprises a rotary selector 100 driven from a drum 110 controlled by an escapement coil 111. Selection of substation apparatus is effected by depressing a push 350 which closes a contact 351 to complete a circuit for the escapement coil 311 whereby the selector 300 is actuated. The arrangement is such that the selector 300 in moving from one selected position to the next makes a first halfnotch movement, then the selector 100 makes two separate half-notch movements and finally the selector 300 makes its second half-notch movement. In the new selected position a supervisory indication circuit is completed over pilot wires p , P whereby indicating mechanism which may be as described in one or other of Specifications 307,381, 307,383, and 334,264 is operated. Metering circuits can be established in the half-notch positions of the selectors, the arrangement being that depression of the meter switch 410 having contacts 411 to 415, closes contact 413 to complete a circuit for coil 353 whereby the selector push is electromagnetically operated. A selecting movement then takes place which is arrested at the half-notch position due to a circuit being opened at contacts 414. Contact 415 closes to energize a locking coil 381 of the selected meter and release the meter pointer, the meter being preferably of the selfrecording kind as described in Specification 317,422. Contact 412 closes to prepare the metering circuit at the control station end. At the substation the drum contacts 121 are closed in the half-notch position whereby the relay 250 is energized to open the indicating circuit at contact 253 and close the metering circuit at contacts 251, 252. The metering circuit includes the metering source 200, the pilot wires P , P , and the meter 380. Release of the meter switch allows the selectors to complete their second halfnotch movements. Means are provided for establishing telephonic communication between the control station and the substation and for transmitting to the control station general alarm currents when a change takes place automatically in the condition of the substation apparatus. If the change occurs when the selectors are in the normal zero position the coil 353 is energized to depress and twist the push 350, whereby an express selecting cycle through all positions of the switches takes place so that the indicating mechanism can show the condition of the substation apparatus. Remote control system, Fig. 7. Two wires P , P and an earth return are employed and the system does not perform executive functions on substation apparatus as in the system shown in Fig. 6. The control station selector 600 is driven by a drum 620 controlled by an escapement coil 629, the substation selector 500 being similarly driven by a drum 520 controlled by an escapement coil 526. The control of the selectors is such that the first half-notch movement of the selector 600 takes place before the first half-notch movement of the selector 500, but the second half-notch movements take place simultaneously. Selection is effected by depression of a push 635. This push is electromagnetically operated by means of a coil 638 when the meter switch 670 is operated, so that a selecting movement is initiated, this movement stopping at the end of the first half-notch movement of the substation selector. A metering circuit is established through a metering source such as 515, pilot wire P , meter 610, and earth return. Release of the meter switch causes completion of a selecting movement. For telephonic communication the substation apparatus 570 includes, in addition to the telephonic instrument, a tuned buzzer and a tuned vibrator and is controlled by a four-way plug 571 adapted to connect the vibrator through condensers 574, 575 to pilot wires P , P , and to cause a relay 580 to be energized, whereby the wires are disconnected from the substation remote control apparatus. At the control station apparatus 680 similar to the apparatus 570 is controlled by a four-way plug 681 adapted to connect a tuned vibrator to the pilot wires through condensers 684, 685 and to disconnect the wires from the remote control apparatus at the control station. A general alarm signal is initiated at the substation when a change occurs in the condition of substation apparatus, this change causing operation of a member such as a flick switch 513 whereby relay 561 is energized to send an alarm. If the selectors are in normal zero position buzzer 668 and red lamp 667 are caused to signal and an express selecting cycle takes place as in the system shown in Fig. 6. In all positions other than the normal zero position the relay 561 through contact 563 operates a tuned vibrator 565 and the high-frequency currents generated are superimposed on the two pilot wires and received by a tuned general alarm relay 695 adapted to operate a buzzer. Automatic correction of meter readings. In both of the systems shown in Figs. 6 and 7 means are provided for initiating periodically a complete selecting and metering cycle whereby the records on all the meters are periodically corrected. Referring to Fig. 6, the meter switch 410 is adapted to be operated electromagnetically by means of a coil 416 which may be energized and de-energized at intervals under the control of contacts 417 operated by a constant speed motor indicated by 418. The motor may be cut out of action by a hand switch 419. The apparatus shown in detail in Figs. 8 and 10 comprises a. constant speed electric motor R geared to a drum S which is formed with grooves S adapted to engage a number of pairs of adjustable rollers T, TI. One of the rollers is slightly in advance of the other, the relative positions being adjustable so that the period of making or breaking a circuit controlled by the rollers may be accurately adjusted. Each roller is carried by a lever arm T provided with a projecion T adapted to close a pair of contacts U. The two pairs of contacts corresponding to two adjacent rollers T, T' are connected in parallel or alternatively can be replaced by one pair. The drum may operate contacts controlling the circuit of the coil 416, Fig. 6. or, as shown, may operate sets of contacts U , U', U , U' corresponding, respectively, to contacts on the meter switch 670, Fig. 7. The grooves S' correspond to the number of selector positions. The circuit of each metering source is, in turn, established for a predetermined interval. In an alternative arrangement shown in Fig. 11, a time switch V closes its contacts V for a brief period at predetermined intervals. The contacts V in parallel with selector contacts V which are closed in all positions of the selector except the normal position, are in the circuit of a relay W having a time delay in its operation. The contacts W after the delay are closed to energize a second relay X which locks up at contact X , at X completes the circuit of a third relay Y, and at X' completes the circuit of a coil Z adapted to act electromagnetically on the meter switch. The relay Y at Y' opens the circuit of relay W and after a time delay operates Y to short-circuit X, whereby Y and Z are de-energized. The de-energization of Y re-establishes the circuit of W through the selector contacts V and the relays again operate in sequence, the cycle continuing until zero position of the selector is reached where the apparatus comes to rest until the time switch V again operates. Specifications 307,379 and 333,172 are referred to.

5. 发明专利

GB344484A Improvements in or relating to remote metering systems 未知
公开(公告)号：GB344484A
公开(公告)日：1931-03-02
申请号：GB3664629
申请日：1929-11-29
申请人： REYROLLE A & CO LTD , BRUCE HAMER LEESON , JAMES ALFRED HARLE , DOUGLAS EDWARD LAMBERT
IPC分类号： G08C19/22
摘要： 344,484. Protective cut-out systems. REYROLLE & CO., Ltd., A., Hebburn-on- Tyne, LEESON, B. H., Waverley, Tynemouth, HARLE, J. A., 221, Jesmond Road, Newcastle-on-Tyne, and LAMBERT, D. E., Sholebrook, Sauncey Avenue, Harpenden, Hertfordshire. Nov. 29, 1929, No. 36646. [Class 38 (v).] A system for obtaining at a control station an indication of the readings of a meter at a remote station, which system may be used for indicating faults in connection with impedance or like protective systems, comprises a device moving over the meter scale at the remote station, an indicator device moving over a corresponding scale at the control station, means for driving the two devices at corresponding speeds, means whereby these devices are started simultaneously from their zero scale positions and are stopped simultaneously when the first device reaches the position occupied by the meter pointer, and means whereby after the desired information has been given the devices automatically return to their zero positions, where they remain irrespective of any movements of the meter pointer until a new indication is to be obtained. In the construction shown in Fig. 1, the meter pointer 100 carries a contact 101 for co-operation with a contact 111 on a timing device 110, which is adapted to be driven, against spring action, by a constant-speed driving element 115 acting through a clutch 117 controlled electromagnetically by a coil 118. Similar means are provided at the control station for driving a timing device 130 coaxial with a pointer 140. The pointer is adapted to be driven over the scale, against spring action, by the timing device 130 and is held in its indicating position when not engaged by the timing device, by means of an electromagnetically released clamp (not shown) controlled by a coil 145. When a reading of the meter is desired, a hand-switch 151 is closed to complete a circuit whereby the clutch coils 118, 138 and the release coil 145 are energized. The devices 110, 130 then move synchronously over the scales until contacts 111, 101 close, whereupon relay 106 operates at contacts 107 to open the circuit of the clutch coils and release coil. The devices 110, 130 move back to zero position and the pointer 140 is clamped in position to indicate the meter reading. The system may be used with alternating currents of audio or radio frequency. In the construction shown in Fig. 2, the remote station is provided with an alternating current generator 176 and a receiver 175, the latter being tuned to the frequency of a generator 160 at the control station, which is also provided with a receiver 165 tuned to the frequency of the generator 176. The receiver 175 controls the energization of clutch coil 118, and the receiver 165 controls the operation of relay 166 for opening the circuit of clutch coil 138 and release coil 145. In applying the invention for use in impedance or like protective systems, the initial operation of a protective relay in response to a fault is caused to start the movement of a timing device at a control station, the device being stopped and returned to zero, leaving an idle pointer in the indicating position, when the relay contacts for tripping the circuit-breaker are operated. The circuits are arranged so that both the timing device and the idle pointer are set to zero in the event of a fault being cleared by another protective relay elsewhere on the protected circuit. The control room is provided with a number of indicators associated, respectively, with protective relays, the clearance of a fault causing the indicator associated with the relay nearest the fault which operates its circuit-breaker to give an indication of the fault position. Specification 334,263, [Class 40 (i), Electric signalling systems &c.], is referred to.

6. 发明专利

GB333172A Improvements in or relating to electric selective remote control systems 未知
公开(公告)号：GB333172A
公开(公告)日：1930-08-05
申请号：GB1369929
申请日：1929-05-02
申请人： REYROLLE A & CO LTD , BRUCE HAMER LEESON , DOUGLAS EDWARD LAMBERT
IPC分类号： H02J13/00
摘要： 333,172. Reyrolle & Co., Ltd., A., Leeson, B. H., and Lambert, D. E. May 2, 1929. Selective distant control systems.-An electric selective remote control system for circuitbreakers or other apparatus at a power station employs four pilot wires for carrying the remote control currents, and the currents passing over either of two'of these wires are such that the two wires can be temporarily disconnected without causing incorrect operation of the remote control apparatus, and whenever these wires are connected together at either end through remote control apparatus, such apparatus will remain inoperative if temporarily energized from a source of current external to the remote control system, whereby the two pilot wires can be temporarily borrowed from the remote control system for other purposes, without harmful interference with the system. In the construction shown, the remote control system employing four pilot wires A - - A is combined with a protective system of the kind described in Specification 314,778, [Class 38 (v), Electric switches &c.]. A power feeder B connecting the control station and substation is provided at the substation with a group of tripping relays indicated at C and a group of stabilizing relays indicated at D. The relays D are directional so that one or other operates on the occurrence of a fault provided that the current at the adjacent end of the feeder is flowing outwards from the feeder, while the operation of the relays C is independent of the direction of current flow. Auxiliary relays E, F are adapted to be operated by relays D, C respectively. Similar relays and groups of relays are provided at the control station. Normally the pilot wires A', A are connected to their remote control circuits through contacts F , F , f , f . If a fault occurs on the network external to the feeder B a current in one direction flows through the feeder, causing operation of the tripping relays F, f at both ends, and at one end, for example, the substation end, causing operation of the stabilizing relay E. At this end the wires A', A will therefore be connected to a local battery H and at the control station end to a lock-out relay g. The relay g operates to prevent operation of a time-lay relay j controlling a tripping circuit k for a circuit-breaker l. The relay E at the substation by its contacts E prevents operation of the time-lay relay J. The feeder B therefore remains in circuit at both ends. When the fault is cleared the tripping and stabilizing auxiliary relays re-set and return the wires A , A to their normal circuits. If the fault occurs in the feeder itself and fault current is supplied from both ends of the feeder the relays F, f operate, but relays E, e are inoperative so that the time-lay relays. J, j act. to cut out the feeder at both ends, the relays F, f then resetting to restore the wires A A to normal. When the fault current is supplied from one end on]y, the relay F or f at the supply end operates so that the wires A'. A are disconnected from the remote control circuits at one end only and are connected up again when the feeder is cut out at the supply end. To avoid any harmful effect on the operation of the protective system. in the event of the relays at the two ends operating rot quite simultaneously, the protective and remote control batteries at each end may be connected to the two pilot wires with opposite polarities, the lock-out relays being polarized to respond only to current from the protective batteries. General nature of the remote control system. The substation is provided with a rotary selector 20, the step-by-step movement of which corresponds with that of a rotary selector 220 at the control system, the arrangement being that described in Specification 307,379, wherein during each selecting movement the selector 220 makes two half-notch movements for one fullnotch movement of the substation selector 20. Completion of the selecting movement causes a supervisory current to be transmitted to the control station to indicate the condition of the selected substation apparatus. In any selected position an executive hand-push or a meter switch may be operated for effecting, respectively, an operation on the substation apparatus, or the establishment of a metering circuit. The normal zero portion of the selectors, shown in the drawing, is reserved for special purposes such as telephonic communication, and the transmission of a general alarm current associated with means for causing a complete selecting and indicating cycle to be performed to indicate the condition of all substation apparatus. Selection of apparatus. Operation of the selector push 270 closes contact 274 to complete a circuit to the first motion solenoid 221, which drives the selector 220 to its first half-notch position and closes contacts 242, 245, 246. The control station equipment is then locked until the reception of a release current from the substation. Closing of contacts 245, 246 prepares a circuit for release relay 223. Closing of contact 242 completes a circuit for a selecting current through pilot wires A , A and polarized relay 100, which closes contacts 101 to energize selector relay 90. The relay operates selector solenoid 21 to drive the substation selector 20 to its new position. The armature of the solenoid closes contacts 22, 24 to complete a release circuit through polarized relay 223 and also through contact 273, so that the second motion solenoid is energized to prepare ratchet and pawl mechanism for driving the selector 220 through its second half-notch movement. The armature of the solenoid 222 opens contact 242, whereby eventually the solenoid is de-energized and the second half-notch movement of the selector 220 is effected. For express selection the push 270 instead of being depressed and released is depressed and rotated to close contact 272, which bridges contact 273. Indicating circuit. Assuming that the selectors are in the second position corresponding to the open circuit-breaker 10 shown, an indicating circuit is closed through pilot wires A , A and polarized relay 200, the latter closing its contacts 202 to energize a coil 215. The coil acts on an armature adapted to operate indicating mechanism which may take one or other of the forms described in Specifications 307,381 and 307,383. Operation of circuit-breaker. Depression of close push 290 or trip push 280 to effect closing or opening, respectively, of the selected circuitbreaker opens the indicating circuit and closes a circuit through the wires A , A and the control station battery 250. The polarized relay 100 is thereby energized to close contacts 102 and energize executive relay 80. The latter locks up and at contact 84 closes a circuit for trip relay 140 or close relay 145. Trip relay 140 has a contact 141 adapted to control the energization of the circuit-breaker trip coil 12. Close relay 145 at contact 146 closes a circuit through closing coil 11. Transmission of meter readings. The estab. lishment of a metering circuit in any selected position is initiated by rotation of a meter switch 300, which when rotated through 180‹ completes a circuit from one side of the metering source through bus-bar 77, pilot wire A , bus-bar 262, the selected meter 265, bus-bar 260, pilot wire A , bus-bar 78 to the other side of the metering source 19. Further rotation of the meter switch causes disconnection of the meter 265, and energization of the release meter relay 150, whereby normal conditions in the substation are re-established, except for the de-energization of the relay 135. This relay is de-energized and normal conditions restored at the control station when the switch 300 has completed a revolution. According to the Provisional Specification, the metering circuit is over the second and fourth pilot wires. Telephone communication. The control station operator, on lifting the telephone instrument, operates a dummy push 320. This first breaks the circuits of the wires A , A at contacts 322, 326 and momentarily closes contacts 324, 325 to transmit an executive current which energizes relay 100 to close its contacts 102 and energize relay 80. Contact 83 closes to cause the operation of relay 120 which locks up and releases relay 100 at contact 127. Contact 121 prepares the circuit for telephonic communication, and contact 122 closes a circuit to the substation call bell 162 through the hook switch 161, which when lifted breaks the calling circuit. The speaking circuit is complete through the substation telephone 160, pilot wires A , A , and the control station telephone 330. Replacement of the instrument at the control station releases the dummy push, whereby the system returns to its normal zero position. The substation operator to call the control station depresses telephone push 165, closing through contacts 166 a circuit through polarized relay 200. This relay closes contacts 201 and energizes coil 210, thereby closing at contact 212 a circuit to buzzer 331. The telephone push 165 is locked in all selected positions other than zero position by an electromagnetic locking device 169 energized over a circuit closed in all positions except the zero position. General alarm arrangements. When a change of condition of one of the substation apparatus such as a circuit-breaker occurs while the system is at rest in the zero position, a flick switch 16 closes momentarily to cause energization of substation general alarm relay 150, which locks up and at contact 153 closes a circuit for a definite time-limit relay 156. Contact 152 closes to complete a circuit through, relays 130 and 200. Relay 200 closes contacts 202 to energize coil 215 and thereby close contact 218. As the relay .130 closes contacts 132 a circuit is now complete through pilot wires A', A , polarized relay 200, and general alarm relay 350

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