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111. 发明专利

JP2003199249A METHOD OF MAKING USE OF POWER SUPPLY NETWORK AND SYSTEM THEREFOR 审中-公开
公开(公告)号：JP2003199249A
公开(公告)日：2003-07-11
申请号：JP2001392537
申请日：2001-12-25
申请人： HITACHI LTD
发明人： UCHIYAMA TOMOYUKI , ONO YASUNORI , FUJITA YASUNOBU , KAWAMURA NAOTERU
IPC分类号： H02J3/00 , H02J3/38 , H02J3/46
摘要： PROBLEM TO BE SOLVED: To control powers supplied to loads of respective users connected to a power supply network according to power rates determined by contracts. SOLUTION: When power is supplied to a regional power supply network 40 comprising a distribution line 4, suppliable power is calculated according to powers supplied by a power generating apparatus 25 and a power storage apparatus 26 and power purchased from a power system 1, and, further, total consumed electric energy in the power supply network 40 is calculated according to electric energies measured by watthour meters 8 by a management server 23. If the total consumed electric energy exceeds the suppliable electric energy and the power supply to the regional power supply network is insufficient, parallel-off commands are given to circuit breakers 10 of the users A and B, who have higher ranks of the parallel-off among the users A-D according to power rates determined in relation to contracts, to parallel off non-important loads 5 belonging to the users A and B from the regional power supply network 40 and the powers are supplied with higher priority to the important loads 6 of the users C and D who have lower ranks of the parallel-off. COPYRIGHT: (C)2003,JPO

112. 发明专利

JP2001244129A STATIC INDUCTION ELECTRICAL APPARATUS 失效
公开(公告)号：JP2001244129A
公开(公告)日：2001-09-07
申请号：JP2000054378
申请日：2000-02-25
申请人： HITACHI LTD
发明人： HAMADATE YOSHIO , ONO YASUNORI , KASAHARA NAOKI , KASHIWAKURA MASARU , KIBUNE TAKAHIRO
IPC分类号： H01F27/28 , H01F27/36 , H01F30/12
摘要： PROBLEM TO BE SOLVED: To obtain a static induction electrical apparatus, in which the number of lead wires of line current on the low voltage side, led out from a three-phase low voltage winding to one axial end thereof, is decreased from three. SOLUTION: Only the winding conductor 48 of a low voltage winding 5b in one phase among three-phases of a low-voltage winding 5 is wound in reverse to the winding conductors 49 of low voltage windings 5a, 5c in other phases, and current of the low-voltage winding 5b in one phase is fed reversely to currents flowing through the low-voltage windings 5a, 5c in other phases. Output terminal (v) of the low-voltage winding 5b in one phase is connected with the input terminal (z) of the low-voltage winding 5c on one side. The lead wire 30w of phase current on the low voltage line side to be connected with the input terminal side of the low voltage winding 5a on the other side from the output terminal (w) of the low-voltage winding 5c on one side, and the lead wire 30b of line current on the low-voltage line side from the output terminal (u) of the low-voltage winding 5a on the other side and the input terminal (y) of the low-voltage winding 5b in one phase, are led out to one axial end of the low-voltage winding 5, thus decreasing the number of lead wires on the low-voltage side.

113. 发明专利

JP2001148314A TRANSFORMER 失效
公开(公告)号：JP2001148314A
公开(公告)日：2001-05-29
申请号：JP33237899
申请日：1999-11-24
申请人： HITACHI LTD
发明人： HAYASHI NORIYUKI , ONO YASUNORI , MINAMI NAOKI , TAKIZAWA ATSUSHI , KAJIWARA YUICHI
IPC分类号： H01F27/28 , H01F27/20 , H01F30/00
摘要： PROBLEM TO BE SOLVED: To provide a transformer having a winding cooling structure wherein effective cooling is performed by ensuring a flow rate necessary for cooling the respective horizontal ducts in the respective bent flow sections and avoiding local excessive temperature rise in a winding. SOLUTION: A plurality of bent flow sections 9 are formed by inserting bent flow plates 8 in the axial direction of a disk winding or a helical winding. In the bent flow sections 9, arrangement intervals of the bent flow plates 8 in the vicinity of the center of a winding part are so reduced that the number of windings 3 of the bent flow sections 9 in the vicinity of the central part of a winding part, i.e., the number of horizontal ducts 7 is made smaller than that of other bent flow sections 9, or a shunt plate and a double flow plate are arranged in the bent flow section 9 in the vicinity of the central part of the winding part.

114. 发明专利

JP2001035733A MAGNETIC SHIELD DEVICE FOR STATIONARY INDUCTION ELECTRICAL APPARATUS 失效
公开(公告)号：JP2001035733A
公开(公告)日：2001-02-09
申请号：JP20866599
申请日：1999-07-23
申请人： HITACHI LTD
发明人： HAMADATE YOSHIO , UCHIYAMA TOMOYUKI , HASHIMOTO MITSUMASA , KIUCHI TADASHI , MITSUI MASATOSHI , ONO YASUNORI , KIBUNE TAKAHIRO , INOUE HIROAKI
IPC分类号： H01F27/34
摘要： PROBLEM TO BE SOLVED: To provide a magnetic shield device for a stationary induction electrical apparatus of high reliability by providing a slit only on the surface side of a magnetic body shield, and providing a presser bracket which withstands magnetic attraction, for reduced loss of the magnetic body shield itself and prevented local overheating. SOLUTION: A magnetic body shield 10, where magnetic bodies are laminated, is fitted inside tanks 6 and 7 where an induction electric apparatus main body comprising an iron core 3 and coils 4 and 5 is housed. Here, a slit 11 is provided only on the surface side of the magnetic body shield, with presser brackets 20 and 21 which can withstand fully against magnetic attraction being provided.

115. 发明专利

JPH11168014A TRANSFORMER 失效
公开(公告)号：JPH11168014A
公开(公告)日：1999-06-22
申请号：JP33384897
申请日：1997-12-04
申请人： HITACHI LTD
发明人： ONO YASUNORI , HAYASHI NORIYUKI , OBATA TOSHIMITSU , HIRAISHI KIYOTO
IPC分类号： H01F27/28 , H01F27/08
摘要： PROBLEM TO BE SOLVED: To provide a winding of an SF6 gas-insulated transformer that comprises a disc winding or a helical winding, into which current turning plates are inserted in the axial direction to form a plurality of current turning sections, so that the maximum temperature is reduced by inserting current splitting plates and double-current plates in the vicinity of the center of the current turning sections for reducing the dispersion of the temperature in the current turning sections. SOLUTION: In a plurality of current turning sections formed by inserting current turning plates 51 in the axial direction into a disc winding or a helical winding, a predetermined number (for example 4) of current turning sections from the top of disc winding or a helical winding are formed with a group of unit windings 40 (hatched portions) with a current splitting plate and a double-current plate. The current turning sections below them are formed with a group of unit windings 50 (white portions) without the current splitting plate and the double-current plate. Consequently, the maximum temperature of the overall windings can be maintained low, because the dispersion of a temperature rise of the windings of the upper current turning sections can be reduced when the gas temperature rises.

116. 发明专利

JPH1126250A TRANSFORMER 失效
公开(公告)号：JPH1126250A
公开(公告)日：1999-01-29
申请号：JP17803197
申请日：1997-07-03
申请人： HITACHI LTD
发明人： ONO YASUNORI , KIYONO KAZUYUKI , HAYASHI NORIYUKI , HAMADATE YOSHIO , OBATA TOSHIMITSU , UMENE IWAO
IPC分类号： H01F27/08 , H01F27/20 , H01F27/26
摘要： PROBLEM TO BE SOLVED: To enable heat generate din a core fastener to be efficiently dissipated by a method wherein a structural member of thermal conductivity is thermally connected to the core fastener. SOLUTION: A cooling copper structural member 8 T-shaped in cross section is fixed to the side plate of an iron fastener 6 with bolts. At this point, the cooling structural member 8 is composed of a part parallel with the side plate of the core fastener 6 and another part vertical to the former part. When the core fastener 6 rises in temperature, a strong ascending flow along the vertical plate part and a strong flow along the lower part of the side plate are generated by natural convection. Heat released from the side plate is conducted to the cooling structural member 8, and a strong ascending flow is generated around the cooling structural member 8. SF6 gas or the like of comparatively low temperature is fed from around to efficiently remove heat from the cooling structural member 8. By this setup, the side plate of a core fastener is restrained from rising in temperature so as to enhance a transformer in reliability.

117. 发明专利

JPH10172839A TRANSFORMER WINDING 失效
公开(公告)号：JPH10172839A
公开(公告)日：1998-06-26
申请号：JP33334796
申请日：1996-12-13
申请人： HITACHI LTD
发明人： ONO YASUNORI , HAYASHI NORIYUKI , KIYONO KAZUYUKI , HAMADATE YOSHIO , UMENE IWAO , NAGAO YOSHIHIRO
IPC分类号： H01F27/28 , H01F27/20
摘要： PROBLEM TO BE SOLVED: To prevent local heating of a winding by using a structure having many openings at a surface approximately perpendicular to the flow in a horizontal duct as a positioning spacer inserted in a winding crossover part. SOLUTION: Adjacent disc-like windings 1 are coupled through a winding transition 2 (winding part coupling discs of adjacent disc-like windings). In order to hold the windings 1 and winding transition 2 in a set place, positioning spacers 8 are inserted, each having a flat plate having many circular openings 12 and anti-slip structure 11 to avoid slipping the flat plate at the top of the plate. The positioning spacers 8 are made of a press board. This prevents the local heating.

118. 发明专利

JPH09199345A WINDING OF TRANSFORMER 失效
公开(公告)号：JPH09199345A
公开(公告)日：1997-07-31
申请号：JP711096
申请日：1996-01-19
申请人： HITACHI LTD
发明人： ONO YASUNORI , SAKAMOTO TAKESHI , KIYONO KAZUYUKI , FUJITA HIROYUKI , HIRAISHI KIYOTO
IPC分类号： H01F27/28 , H01F27/32
摘要： PROBLEM TO BE SOLVED: To lower the maximum temperature of a winding and at the same time to uniformalize the rising distribution of a temperature by inserting a current splitting plate into the vicinity of the center of a current turning section inside the winding of an SF6 gas-insulated transformer comprising a disk winding or a helical winding into which a current turning plate is inserted in the axial direction to uniformalize the distribution of the flow rate of an insulating coolant inside a horizontal duct. SOLUTION: With respect to a current turning section into which a plurality of current turning plates are inserted in the axial direction of a disk winding or a helical winding 1, a current splitting plate 11 for increasing a quantity of coolant flowing through a horizontal duct 5 in the vicinity of the current plate 7a forming an inlet is provided in the state of being projected into an inlet side vertical duct 4', and a double-current plate 12 is provided in the state of being projected into an outlet vertical duct 4, thereby being able to make the coolant flow in the opposite direction to the horizontal duct 5 adjacent to the horizontal duct 5 in the rear of the current splitting plate 11 where a current is easy to stay and to ensure a flow rate required for cooling in all horizontal ducts 5.

119. 发明专利

JPH09115737A GAS INSULATED TRANSFORMER 失效
公开(公告)号：JPH09115737A
公开(公告)日：1997-05-02
申请号：JP26970595
申请日：1995-10-18
申请人： HITACHI LTD
发明人： SAKAMOTO TAKESHI , ONO YASUNORI , KIYONO KAZUYUKI , FUJITA HIROYUKI , HIRAISHI KIYOTO
IPC分类号： H01F27/08 , H01F27/02 , H01F27/20
摘要： PROBLEM TO BE SOLVED: To improve cooling of a transformer and a cooler, by ensuring gas flow rate while reducing pressure loss caused by gas flow. SOLUTION: A water-cooled gas cooler 6 is so arranged above the side part of a transformer tank 3 that the longitudinal direction is set horizontal, and gas is introduced from the transformer tank 3 to the water-cooled gas cooler 6 with at least two horizontal straight pipes 5. The following direction of gas is not changed from an exit 11 of the transformer tank to an exit of a heat conducting part in the water-cooled gas cooler 6, and the gas is discharged by penetrating the water-cooled gas cooler 6 in the radial direction.

120. 发明专利

JPH06267904A ION BEAM ETCHING DEVICE AND METHOD THEREOF 失效
公开(公告)号：JPH06267904A
公开(公告)日：1994-09-22
申请号：JP5539493
申请日：1993-03-16
申请人： HITACHI LTD
发明人： IGA TAKASHI , ICHIMURA SATOSHI , ONO YASUNORI , NATSUI KENICHI
IPC分类号： C23F4/00 , G01N24/14 , G01R33/64 , H01L21/302 , H01L21/3065 , H05H1/46
摘要： PURPOSE:To provide an ion beam etching device, which can be used in combination a microwave ion source having a large leakage magnetic field with a plasma bridge type neutralizing device and is long-lived to active gas. CONSTITUTION:A first solenoid coil 5 is used for producing plasma, which is a microwave ion source. A second solenoid coil 13 is located on the same axis as that of the coil 5 and generates a magnetic field in the opposite direction to the direction of the coil 5 to form a cusp field. A plasma bridge type neutralizing device 14 is provided on the periphery of an ion beam 19 and is arranged on a plane A-A including a ring cusp of the cusp field or on its downstream side. As electrons 20 extracted from the device 14 are diffused in the side of a sample along a line of magnetic force which is formed by the, coil 13, the efficiency, which contributes to a neutralization of the sample 12, of the electrons 20 led out from the device 14 is increased.

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