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1. 发明专利

JPH0552468B2 失效
公开(公告)号：JPH0552468B2
公开(公告)日：1993-08-05
申请号：JP9545183
申请日：1983-05-28
申请人： RAILWAY TECHNICAL RES INST , TSUDA DENKI KEIKI KK
发明人： MIZUNO JIRO , UCHIDA KYUKICHI , ARAKI HISANAO
IPC分类号： G01R31/08

2. 发明专利

JPH04204391A TROUBLE POINT ORIENTING METHOD FOR HIGH VOLTAGE DISTRIBUTION LINE 失效
公开(公告)号：JPH04204391A
公开(公告)日：1992-07-24
申请号：JP33994890
申请日：1990-11-30
申请人： TSUDA DENKI KEIKI KK , NISHINIPPON RYOKAKU TETSUDO KK
发明人： ARAKI HISAMICHI , NAKASU TERUO , AKAMATSU MASAHITO , TANAKA HIDEAKI
IPC分类号： G01R31/08
摘要： PURPOSE:To effectively cancel an influence of an induction current, even when it is generated during orientation, so as to orient a trouble point of earth fault with no error by obtaining a vector difference between before and after inverting polarity of currents in a sound line and all the distribution lines. CONSTITUTION:Thyristors SCR1, SCR2 are a circuit for applying an orienting power supply polarity-inverted by the predetermined timing to high voltage distribution lines A, B, and the timing of polarity inversion is performed by a signal from a control relay part 6. When orientation is performed in a short time, a value of an induction current is not changed. On the other hand, a current, flowing in each distribution line from the orienting AC power supply, is inverted before and after the polarity inversion of the orienting AC power supply. In a vector difference between a current, measured by a current transformer inserted in a sound line, before the polarity inversion of the power supply and a current after the polarity inversion, the current is generated not containing the induction current. Even when assumed that the induction current is mixed in a current flowing in a common line to which the orienting AC power supply is connected, a component of the induction current can be removed from the current flowing in the common line when the vector difference between the currents before and after the polarity inversion is taken out.

3. 发明专利

JPS63103982A GROUND-FAULT LOCATING DEVICE FOR HIGH VOLTAGE POWER DISTRIBUTION LINE 失效
公开(公告)号：JPS63103982A
公开(公告)日：1988-05-09
申请号：JP25154986
申请日：1986-10-21
申请人： RAILWAY TECHNICAL RES INST , TSUDA DENKI KEIKI KK
发明人： TSUNAKI KATSUSHIRO , TODA HIROYASU , SAKAMOTO TSUNEHARU , UCHIDA KYUKICHI , TANAKA HIDEAKI
IPC分类号： B60M3/00 , G01R31/08
摘要： PURPOSE:To locate an accurate ground-fault point even in case of the ground-fault by providing an LC filter circuit which resonates at the power source frequency of an AC voltage for locating to the primary or secondary side of a current transformation part which transforms a current for locating. CONSTITUTION:A switch 5 is closed to short-circuit a terminal of a high voltage power distribution line and then a switch 4 is closed to supply the voltage of the AC voltage source 1 for locating to high voltage power distribution lines R and T. Here, if an arc ground-fault P at an accident point occurs nearby the power source 1, a current flowing from a ground electrostatic capacitor in healthy phase passes through the primary sides of current transformers 23 and 24 in the absence of LC filter circuits 21 and 22, but when the circuits 21 and 23 are provided, the impedance viewed from the power distribution line side is large, so the current from the ground electrostatic capacitor due to the arc ground-fault does not flow to the primary sides of the current transformers 23 and 24, i.e. power transmission sides 11a and 11b, but flow to the ground-fault point through the terminal sides of the power transmission lines. Therefore, currents transformed by the current transformers 23 and 24 are only currents generated by the line impedance of the power distribution lines while the AC voltage Eg for locating is used as a voltage source, thereby eliminating the locating error of the ground-fault point.

4. 发明专利

JPS6393640A RELAY METHOD WITH DIFFERENT FREQUENCY MIXED CONTACT PROTECTING FOR AC FEEDER CIRCUIT 失效
公开(公告)号：JPS6393640A
公开(公告)日：1988-04-23
申请号：JP7522786
申请日：1986-03-31
申请人： RAILWAY TECHNICAL RES INST , NIPPON TETSUDO KENSETSU KODAN , TSUDA DENKI KEIKI KK
发明人： MOCHINAGA YOSHIFUMI , HISAMIZU TAIJI , SHUDO NORIO , TAKANO HIKARI , HAMADA HIRONORI , UCHIDA KYUKICHI , ARAKI HISANAO , KITAGAWA TETSUZO
IPC分类号： B60N3/04 , B60M3/04 , H02H3/50
摘要： PURPOSE:To protect an AC feeder circuit surely by sensing the power supply current in AC feeding circuit having a cable butted part by a different frequency power supply, and by shutting the own power supply when the action element (rated frequency component in the other power supply) has attained the set value. CONSTITUTION:A feeder cable 2 of an own power supply with a rated frequency of 50Hz has a breaker 3, and a butted part with a feeder cable of other power supply with a rated frequency of 60Hz is furnished on the extension of said feeder cable 2. Here a current transformer 4 is furnished to sense the current flowing in the feeder cable 2, and the sensed current is fed to a different frequency rectifier circuit 6 and a rated frequency rectifier circuit 7 via a current/ voltage converter 5. Separation is made into 60Hz component E1 and 50Hz component E2 at these rectifier circuits 6, 7, and the component E1 is used as action element while the component E2 used as suppression element E2' upon attenuation 12. The feeder cable 2 is broken by the breaker 3 when the action element has attained the set value and the difference between the action element and suppression element has exceeded the specified value.

5. 发明专利

JPS6358273A GROUND FAULT LOCATING METHOD FOR HIGH-VOLTAGE POWER DISTRIBUTION LINE 失效
公开(公告)号：JPS6358273A
公开(公告)日：1988-03-14
申请号：JP20427586
申请日：1986-08-29
申请人： RAILWAY TECHNICAL RES INST , TSUDA DENKI KEIKI KK
发明人： TSUNAKI KATSUSHIRO , TODA HIROYASU , SAKAMOTO TSUNEHARU , UCHIDA KYUKICHI , TANAKA HIDEAKI
IPC分类号： G01R31/10
摘要： PURPOSE:To accurately locate a ground fault while eliminating a failure in conduction due to a film by applying a voltage which breaks the oxide film of the contact surface of a switch between high voltage power distribution lines for applying an AC voltage for locating to the ground. CONSTITUTION:While an (a) contact point 6 is opened and a (b) contact point 7 is closed, the AC voltage Eg for locating is applied between output terminals R and T of a current transformation part 3 and the ground and no voltage is developed between the terminals R and T. When the contact point 6 is closed and the contact 7 is opened, the voltage of an oxide film breaking voltage source 2 is applied between input terminals RV, TV of the current transformation part 3 and the loop of circuit elements LR, CTR, CTXR, CTXT, CTT, and LT is closed, so that the film breaking voltage reduced by the CTR and CTT is applied between the terminals R and T. The voltage between the terminals R and T is set to AC 100V. The oxide film is broken completely in two sections at 100V and continuity is held at 2V thereafter. In this constitution, the oxide film is broken in several seconds only by switch operation and the ground fault is located speedily and accurately.

6. 发明专利

JPS54129605A SECTION PROTECTIVE DEVICE OF ELECTRICCCAR LINE 失效
公开(公告)号：JPS54129605A
公开(公告)日：1979-10-08
申请号：JP3748078
申请日：1978-03-30
申请人： KEIHIN ELECTRIC EXPRESS , TSUDA DENKI KEIKI KK
发明人： MARUYAMA NOBUAKI , UCHIDA KIYUUKICHI
IPC分类号： B60L3/00 , B60M3/04 , B60M5/02

7. 发明专利

JP2009177979A Transformer for compensation 有权
标题翻译：变压器进行补偿
公开(公告)号：JP2009177979A
公开(公告)日：2009-08-06
申请号：JP2008015109
申请日：2008-01-25
申请人： Tsuda Denki Keiki Kk , West Japan Railway Co , 津田電気計器株式会社 , 西日本旅客鉄道株式会社
发明人： KAWAHARA TAKAHARU , SASAKI KENJI , KUMANO DAIJIRO , MAEDA HIROSHI , NISHIKAWA TOSHIAKI
IPC分类号： H02J3/18 , G05F1/70 , H01F29/08
CPC分类号： Y02E40/30
摘要： PROBLEM TO BE SOLVED: To provide a transformer for a compensation which is installed to an AC substation for an electric railway for improving a power factor to apply to a reactive-power compensator and is capable of ensuring a constant reactance ratio at all the time between the transformer and a capacitor for the compensation even when a tap is changed over for adjusting a compensation capacity. SOLUTION: The core type transformer 1 having a single phase is mounted on the secondary side of the transformer 5 for AC feeding to the AC substation 2 for the electric railway. The core type transformer 1 has a single tap 14a fitting the capacitor 16 on the secondary side and a plurality of no-voltage changing taps 13b to 13f capable of adjusting the compensation capacity by the capacitor 16 on the primary side. In the core type transformer 1, the percent impedance %Z is 16 to 20% even in the changing state of any of the no-voltage changing taps 13b to 13f within a range of 40 to 70 kV at a primary-side voltage. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于补偿的变压器，其被安装到用于电气铁路的交流变电站，用于提高功率因数以应用于无功功率补偿器，并且能够确保一定的电抗比变压器和用于补偿的电容器之间的时间，即使当用于调整补偿容量的抽头被切换时。解决方案：具有单相的铁芯式变压器1安装在变压器5的次级侧，用于交流馈送到用于电气铁路的交流变电站2。芯型变压器1具有将次级侧的电容器16配合的单个抽头14a和能够通过初级侧的电容器16调整补偿容量的多个无电压变化抽头13b〜13f。在核心型变压器1中，即使在初级侧电压为40〜70kV的范围内的任何无电压变化抽头13b〜13f的变化状态下，阻抗％Z为16〜20％。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2009177012A Dc reactor 有权
标题翻译：直流电抗器
公开(公告)号：JP2009177012A
公开(公告)日：2009-08-06
申请号：JP2008015128
申请日：2008-01-25
申请人： Tsuda Denki Keiki Kk , West Japan Railway Co , 津田電気計器株式会社 , 西日本旅客鉄道株式会社
发明人： KAWAHARA TAKAHARU , KINUGASA JUNICHI , FUJISAWA KEIJU , MAEDA HIROSHI , NISHIKAWA TOSHIAKI
IPC分类号： H01F37/00 , B60M3/00
摘要： PROBLEM TO BE SOLVED: To provide a DC reactor to be serially connected to the rectifier of a DC transforming station for electric railway which can be prevented from rapid increase of current flowing, at the occurrence of a fault and which can reduce the high-frequency waves generated due to rectification.
SOLUTION: The DC reactor 1 to be connected to a rectifier 25 of a DC transforming station 20 for electric railway has a coil 2, having a size necessary for suppressing the inductance in the air-core state that can cut off the rise of fault current, at the occurrence of an accident by a circuit breaker, and also has a magnetic core 3 which is to be inserted to the coil so that the inductance in the rated current region of 2,000 A or higher can reduce the rectification ripples generated that accompany rectification.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种直流电抗器串联连接到用于电气铁路的直流变电站的整流器，其可以防止电流流动的快速增加，在故障发生时可以减少由于整流而产生的高频波。解决方案：要连接到用于电气铁路的DC变电站20的整流器25的直流电抗器1具有线圈2，该线圈2具有抑制空芯状态下可以切断上升的电感所需的尺寸的故障电流，并且还具有插入到线圈中的磁芯3，使得额定电流区域的电感在2000A以上可以减少产生的整流波纹伴随整改。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JPH07107655A HOT-LINE DETECTOR FOR DC FEEDER 失效
公开(公告)号：JPH07107655A
公开(公告)日：1995-04-21
申请号：JP24957293
申请日：1993-10-05
申请人： HIGASHI NIPPON RYOKAKU TETSUDO , TSUDA DENKI KEIKI KK
发明人： IDENO ICHIRO , TAKAHASHI AKIO , NAKADA YOSHINAO
IPC分类号： H02H3/50 , G01R19/155
摘要： PURPOSE:To provide a hot-line detector which can detect the hot-line state of DC feeder in extremely simple way regardless of the wiring conditions in a railway substation. CONSTITUTION:The hot-line detectors 1, 10 for DC feeder 5 comprises a coupling capacitor for picking out the ripple component of a DC voltage fed on the DC feeder 5, and means 1 for making a decision that the DC feeder is fed with power when a ripple voltage is picked up by means of the coupling capacitor.

10. 发明专利

JPH0670450A AC FEEDER-CIRCUIT FAILURE SELECTIVE RELAY FOR ELECTRIC RAILWAY 失效
公开(公告)号：JPH0670450A
公开(公告)日：1994-03-11
申请号：JP21524092
申请日：1992-08-12
申请人： RAILWAY TECHNICAL RES INST , TSUDA DENKI KEIKI KK
发明人： MOCHINAGA YOSHIFUMI , HISAMIZU TAIJI , UCHIDA AKIRA , KITAGAWA TETSUZO
IPC分类号： H02H3/44
摘要： PURPOSE:To provide an AC feeder-circuit failure selective relay, for an electric railway in which a failure can be detected quickly and surely even when the failure of a feeder circuit occurs during regenerative braking of a vehicle for performing AC regeneration. CONSTITUTION:A CPU15 operates data from an analog-digital conversion circuit 14 on the basis of a program stored beforehand, detects the change of the feeding current of first and second feeder circuits as vector quantity, and outputs an interruption command for interrupting the first or second feeder circuit when the absolute value of the vector quantity is higher than a predetermined value. DSP16 conducts an operation requiring time at high speed on the basis of a command from the CPU15 to assist the CPU15. A relay 17 operates, e.g. a circuit breaker for opening the first or second feeder circuit on the basis of a command from the CPU15. A display part 18 displays various set points, operating state of the relay part 17, etc., on the basis of a command from the CPU15.

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