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1. 发明专利

JP2004027848A Gas turbine controller 有权
公开(公告)号：JP2004027848A
公开(公告)日：2004-01-29
申请号：JP2002144099
申请日：2002-05-20
申请人： Toshiba Corp , 株式会社東芝
发明人： HIRAYAMA KAIICHIRO , KOBAYASHI TADASHI , KATAURI TOMOO , OTSUKI YASUHIKO , MIZUNO TAKASHI
IPC分类号： F02C7/042 , F02C9/28 , F02C9/46 , F02C9/54 , F04D27/00 , F04D29/56 , G05B23/02 , H02P9/04
CPC分类号： F02C9/54 , F02C9/28 , F02C9/32 , F05D2270/024 , F05D2270/042 , F05D2270/06 , F05D2270/061 , F05D2270/091 , F05D2270/095 , F05D2270/303 , F05D2270/304 , F05D2270/42 , G05B23/0291 , Y02T50/67
摘要： PROBLEM TO BE SOLVED: To provide a gas turbine controller contributing to stabilizing system frequency if the system frequency varies transiently, without having to set the material strength of gas turbine high-temperature components below the maximum stress of the high-temperature components.
SOLUTION: Control of gas-turbine combustion gas temperature is excluded so that, if a system frequency error is detected, adjusting the output of the gas turbine contributes to recovering the system frequency. For this, the gas turbine controller has a logic circuit which excludes the control of gas turbine combustion gas temperature according to a signal coming from the function of detecting system frequency errors, and a circuit which restores the gas turbine when the turbine is usable. The detection of system frequency errors may be effected by receiving external signals or by providing the controller in a combined cycle plant.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JPH08151906A GAS TURBINE OPERATION CONTINUING DEVICE IN COMBINED CYCLE PLANT 失效
公开(公告)号：JPH08151906A
公开(公告)日：1996-06-11
申请号：JP29407894
申请日：1994-11-29
申请人： TOSHIBA CORP
发明人： KOWADA HIROSHI , KATAURI TOMOO
IPC分类号： F01D21/16 , F01K23/10
摘要： PURPOSE: To avoid the tripping of a gas turbine, by tripping a steam turbine and at the same time, discharging gas turbine exhaust heat to the atmosphere when system frequency is fluctuated so as to be off an allowable frequency zone in the steam turbine or the steam turbine can not be continuously operated. CONSTITUTION: In case that a gas turbine operation continuing device in a combined cycle plant is equipped with exhaust heat recovery boilers 7 to recover exhaust heat in gas turbines 9 through dampers 11, and generators 1 are driven by steam from the exhaust heat recovering boilers 7 through a steam turbine 3, the frequencies of the generators 1 are monitored by a frequency monitoring device 2. When system frequency is fluctuated, and changed into frequency being off an allowable frequency zone in the steam turbine 3, the steam turbine 3 is tripped, and at the same time, the dampers 11 are switched so that the exhaust heat in the gas turbines 9 is discharged, to the atmosphere, through bypass ducts 12 and funnels 13. By the foregoing process, the exhaust heat in the gas turbines 9 may not be sent to the exhaust heat recovery boilers 7 so that the gas turbines 9 can be continuously operated.

3. 发明专利

JPH04163610A CONTROLLER FOR ON-LOAD TAP CHANGER 失效
公开(公告)号：JPH04163610A
公开(公告)日：1992-06-09
申请号：JP28855690
申请日：1990-10-29
申请人： TOSHIBA CORP
发明人： KATAURI TOMOO
IPC分类号： H01F29/04 , G05F1/67
摘要： PURPOSE:To fully contribute capibility of a generator to the improvement of electric power quality by issuing the permission signal of an on-load tap switching operation by combining system state estimation, the calculation of a state quantity change at the time of switching an on-load tap in the system state and the monitoring of the acceptable driving state of the generator. CONSTITUTION:A post-LTC switched state calculation circuit 18 calculates the reactive power output change of a generator in order to estimate the driving state of the generator after a controller for on-load tap changer for the boosting transformer of the generator (LTC) 3. A generator acceptable output characteristic memory 19 stores the acceptable driving characteristic of the generator as an acceptable driving range in a complete or simplified shape, and inputs it to a comparison/judgement circuit 20 with the driving state of the generator which is expected after the switching of LTC. A driving limit is confirmed not to be exceeded and a trigger command is given to a switching command circuit 21 which gives the permission condition of an LTC switching command from the outside. Thus, the driving ability of the generator is shown in a maximum, even if driving which contributes to the improvement of system electric power quality is executed by LTC switching control.

4. 发明专利

JPH03207244A GROUNDING DETECTOR FOR SYNCHRONOUS MACHINE FIELD CIRCUIT 失效
公开(公告)号：JPH03207244A
公开(公告)日：1991-09-10
申请号：JP25833890
申请日：1990-09-27
申请人： TOSHIBA CORP
发明人： TSUDA HIDEAKI , KATAURI TOMOO , OTAKA TORU
IPC分类号： H02K19/36 , G01R31/06
摘要： PURPOSE:To detect abnormality easily and appropriately, without causing erroneous function due to noise, by arranging integer times of 2 of detection coils so that the electrical angle will be 180 deg. and providing the sum of the outputs, as an input signal, to a grounding detector. CONSTITUTION:Two detection coils 11a, 11b, for example, are arranged on the static side so that the electrical angle will be 180 deg. and the outputs therefrom are connected to be added or subtracted according to the polarity of the detection coils 11a, 11b and provided, as an input signal, to a ground fault detector 12. Consequently, commercial frequency voltages to be provided as input signals to the ground fault detector 12 are normally canceled with each other, and an abnormality can appropriately be detected upon occurrence of field grounding.

5. 发明专利

JPH0549163A DC POWER SUPPLY 失效
公开(公告)号：JPH0549163A
公开(公告)日：1993-02-26
申请号：JP19969691
申请日：1991-08-09
申请人： TOSHIBA CORP
发明人： KATAURI TOMOO , SUZUKI YUKIO
IPC分类号： H02J1/00 , H02J7/34
摘要： PURPOSE:To provide a highly reliable DC power supply in which terminal voltage of a load can be maintained constant by compensating for the voltage drop between the power supply and the load. CONSTITUTION:The DC power supply comprises a gate controller 5 for controlling the output voltage of a rectifier 2 to nullify the difference between the output voltage of the rectifier 2 and a preset reference voltage and a voltage drop compensator 6 for calculating a voltage drop by multiplying the output of the gate controller 5 by a preset resistance of a cable 7 and delivering a correcting voltage signal to the gate controller 5.

6. 发明专利

JPS6482210A ON-LOAD TAP SWITCHING DEVICE 失效
公开(公告)号：JPS6482210A
公开(公告)日：1989-03-28
申请号：JP23880187
申请日：1987-09-25
申请人： TOSHIBA CORP
发明人： KATAURI TOMOO , SAKAGUCHI TAMOTSU
IPC分类号： G05F1/14
摘要： PURPOSE:To prevent the repetition of an unnecessary tap switching action by operating the mean value of respective winding voltages at the secondary side and tertiary side of three-winding transformer and canceling the unbalance of respective voltages. CONSTITUTION:When the voltage of a secondary side winding 2 detected from the secondary voltage signal of a transformer 6 for a secondary side winding measuring instrument is in an action area in being dislocated from an LTC voltage setting value to a lower side by a fixed quantity and the voltage of a tertiary side winding 3 detected from the secondary voltage signal of a transformer 7 for a tertiary side winding measuring instrument is in a blind sector in being dislocated from the LTC voltage setting value to a higher side, a voltage control circuit 12 operates the mean value of the voltages of the windings 2 and 3. Thus, the unbalance of the voltages of the windings 2 and 3 is canceled. Only when the difference between the mean value obtained by the operation and the LTC voltage setting value exceeds the fixed quantity, a switching signal (a) is sent, and an on-load tap switching driver 8 is operated.

7. 发明专利

JPH0833199A CAPACITOR PROTECTIVE DEVICE 失效
公开(公告)号：JPH0833199A
公开(公告)日：1996-02-02
申请号：JP15973994
申请日：1994-07-12
申请人： TOSHIBA CORP
发明人： SAKAI ISAO , KATAURI TOMOO , TAMURA TETSUMASA
IPC分类号： H02H7/16 , G05F1/70
摘要： PURPOSE:To protect a capacitor by avoiding an unwauted operation due to odd harmonics which flow transitionally when a transformer is connected by opening a circuit breaker according to the level of an odd harmonic currensincluding the fundamental wave where the even harmonics are subtracted. CONSTITUTION:DC components are eliminated from a capacitor current including harmonics by a waveform reproduction circuit 22a, sampling digital processing is performed by a next phase-shifting circuit 22b, and the output from the waveform reproduction circuit 22a is added to that from the phaseshifting circuit 22b by an adder 22c. The even harmonic current obtained by the even harmonic current detection means 22 is inputted to an adder 23a, where even harmonics are subtracted from current including harmonics outputted from the waveform reproduction circuit 22a and odd harmonic current including the fundamental wave is inputted to an overload protection means 24, thus preventing unneeded operate with the even harmonic components of excitation alternate current, reducing an operator's load, and preventing the voltage and power factor from decreasing.

8. 发明专利

JPH04248400A AUTOMATIC VOLTAGE CONTROLLER FOR GENERATOR 失效
公开(公告)号：JPH04248400A
公开(公告)日：1992-09-03
申请号：JP154391
申请日：1991-01-10
申请人： TOSHIBA CORP
发明人： SATO OSAMU , KATAURI TOMOO
IPC分类号： H02P9/14
摘要： PURPOSE:To improve the quality of a power by expecting an operating state of a power system, and setting a voltage target value based on calculated results of a generator reactive power variation and a generator voltage variation. CONSTITUTION:A voltage setter drive circuit (VS) 12 so drives a voltage setter 7 that a voltage set value is generated arbitrarily or at a certain period. An operating state calculation circuit 14 calculates a generator, reactive power based on voltage, current signals from a signal input circuit 13. An operating state deviation calculator 16 calculates a generator reactive power variation varying upon change of the voltage set value of the VS 12 and a booster transformer secondary side voltage variation. A system operating state expecting circuit 17 calculates a system operating state based on the generator reactive power variation, the booster transformer secondary side voltage variation and a generator constant, booster transformer constant stored previously. A voltage target value setting circuit 18 calculates the generator reactive power variation and generator voltage variation based on the system operating state, fall them within allowable ranges, and outputs the voltage target value to the setter 7.

9. 发明专利

JPH0433533A ELECTRIC MOTOR ARMATURE COIL WINDING 失效
公开(公告)号：JPH0433533A
公开(公告)日：1992-02-04
申请号：JP13836890
申请日：1990-05-30
申请人： TOSHIBA CORP
发明人： KATAURI TOMOO
IPC分类号： H02K3/28
摘要： PURPOSE:To obtain an electric motor coil winding which has advantages of a conventional and rational coil winding configuration where influence to a proper strand is minimized even if the strand is disconnected by electrically connecting a plurality of strands for each turn or a turn group unit. CONSTITUTION:A like-slot part electrical connection part 1 and a slot crossover part electrical connection part 2 are formed at a part which is just out of a core part and a part which crosses to a next slot and four strands are connected electrically. It is not necessary to connect all electrically and partial connection is also effective for improvement. In a connection diagram for one phase of an armature when electrical connection at the crossover part is performed, four strands are in the same potential by electrical connection for each turn group for an electrical connection part 3.

10. 发明专利

JPH01206894A AC VARIABLE SPEED MOTOR CONTROLLER 失效
公开(公告)号：JPH01206894A
公开(公告)日：1989-08-21
申请号：JP2877488
申请日：1988-02-12
申请人： TOSHIBA CORP
发明人： KATAURI TOMOO , ANDO YASUHIRO
IPC分类号： H02P27/06
摘要： PURPOSE:To reduce the fallen value of rotation of an apparatus, even when abnormality occurs, and to return said apparatus quickly to the state of operation before said abnormality occurred, by providing said apparatus with two control systems so as to change one control system to the other one, when abnormality occurs in said one control system. CONSTITUTION:An apparatus is provided with a normal A control system and a stand-by B control system. In the middle of a passage through which a signal from rate-of-change controllers 30A, 30B is inputted to voltage controllers 31A, 31B and frequency controllers 36A, 36B, there is a switch 51 to select one of said A and B systems. During operation of the A system, that is, while the B system is standing by, a B phase controller 33B always synchronizes a clock and pulse oscillation timing built in itself with a phase from the input side voltage of an AC-to-DC converter 22 and stands by so as to be capable of operating immediately when a phase command from a current controller 32B comes. In this manner, the fallen value of rotation of a motor can be reduced, even if the control system is changed to the stand by system.

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