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1. 发明专利

JP2003134657A DEVICE FOR PREVENTING UNNECESSARY ACTION OF SUBSTATION CAUSED BY GROUND FAULT OF DIRECT CURRENT FEEDING CIRCUIT 审中-公开
公开(公告)号：JP2003134657A
公开(公告)日：2003-05-09
申请号：JP2001330751
申请日：2001-10-29
申请人： RAILWAY TECHNICAL RES INST , JR SOKEN DENKI SYSTEM KK
发明人： KAWAHARA TAKAHARU , HASE SHINICHI , MORIMOTO HIROMI , ITO TOSHIKATSU
IPC分类号： H02H3/10 , H02H3/14 , H02H7/26
摘要： PROBLEM TO BE SOLVED: To prevent a breaker of a substation from being shut off by a ground fault accident in the area under the control of an adjacent substation, in a direct current electric railway. SOLUTION: It is so arranged that an electrical discharge gap 3 is provided between a rail 21 and a ground mat 23, a return feeder overcurrent relay 2 is provided in a return feeder 27, and furthermore an interruption controller 1 is provided which breaks an AC breaker 6 and DC breakers 10, 11, 12, 13 only when both a discharge detection signal from the electrical discharge gap 3 and a ground fault detection signal from the return feeder overcurrent relay 2 are received simultaneously, and which breaks, when a stringing ground fault signal is received from any of the feeding circuit overcurrent relays 14, 15, 16, 17, only the DC breaker that feeds power to that stringing on which the ground fault has occurred, irrespective of presence or absence of any other detection signal, and which does not interrupt the breaker in other conditions.

2. 发明专利

JPS62221942A CONTROLLING METHOD FOR REGENERATION SUBSTATION 失效
公开(公告)号：JPS62221942A
公开(公告)日：1987-09-30
申请号：JP4904786
申请日：1986-03-06
申请人： RAILWAY TECHNICAL RES INST , MEIDENSHA ELECTRIC MFG CO LTD
发明人： MIZUNO JIRO , NADATOMO KUNIO , ITO TOSHIKATSU , GONDO TOYOMI , KAWAUCHI KAZUYOSHI
IPC分类号： B60M3/02 , B60M3/06
摘要： PURPOSE:To improve the regeneration efficiency, by adjusting a tramcar line voltage in a power running area from a heavy load to a light load conditions lower than a no-load DC voltage in a regeneration substation with a DC feeder voltage compensation device. CONSTITUTION:The positive input side terminal of an inverter 6 is connected to a tramcar line 2, and make it possible to invert the DC power in the regeneration braking to regenerate at the side of a commercial frequency power source. The no-load DC voltage of the inverter 6 is set equal to the rating voltage in the power running, and the regenerative energy is fed to the auxiliary unit of the tramcar line 5. And by operating a thyristor rectifier 3 in the inverter area from a no-load to a light load operatings, the no-load DC voltage of the tramcar line 2 is made lower than the no-load DC voltage of the diode rectifier 1. Therefore, the power regeneration efficiency is improved.

3. 发明专利

JP2007247318A Rail electrolytic corrosion preventive device 有权
标题翻译：轨道电腐蚀预防装置
公开(公告)号：JP2007247318A
公开(公告)日：2007-09-27
申请号：JP2006074244
申请日：2006-03-17
申请人： Railway Technical Res Inst , 財団法人鉄道総合技術研究所
发明人： HASE SHINICHI , MORIMOTO HIROMI , ITO TOSHIKATSU
IPC分类号： E01B19/00 , C23F13/00
摘要： PROBLEM TO BE SOLVED: To provide a simple electrolytic corrosion preventive device which utilizes a regeneration brake, and suppresses a potential increase on a rail caused by a return line automatic switch to suppress the electrolytic corrosion of the rail. SOLUTION: The rail electrolytic corrosion preventive device suppresses the electrolytic corrosion of the rail on DC feeding circuit. The electrolytic corrosion preventive device includes the return line automatic switch connecting an isolated and insulated rail to a rail connected to a substation, a switch means connected in parallel with the return line automatic switch, and a control unit controlling switching on and off of the switch means. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种利用再生制动的简单的电解腐蚀防止装置，并且抑制由返回线路自动切换引起的轨道上的电位增加，以抑制轨道的电解腐蚀。
解决方案：轨道电解腐蚀防止装置抑制直流供电电路上的导轨的电解腐蚀。电解腐蚀防止装置包括将隔离和绝缘的导轨连接到连接到变电站的轨道的返回线自动开关，与返回线路自动开关并联连接的开关装置，以及控制单元，其控制开关的接通和断开手段。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JPH07177654A GROUND FAULT DETECTION SYSTEM FOR DC FEEDER CIRCUIT 失效
公开(公告)号：JPH07177654A
公开(公告)日：1995-07-14
申请号：JP31818193
申请日：1993-12-17
申请人： RAILWAY TECHNICAL RES INST , EIRAKU DENKI KK
发明人： ABE SATOSHI , ITO TOSHIKATSU , AGUI KOJI , HASE SHINICHI , ITO TAKESHI
IPC分类号： H02H7/26 , B60M3/00
摘要： PURPOSE:To provide a system for detecting and locating such ground fault as the part applied with DC feeder voltage, e.g. feeder line or trolley line, in the feeder circuit of DC electric railway touches a conductive structure, e.g. a beam, for supporting the part while insulating electrically. CONSTITUTION:A resistor and a diode 8L are connected in series between a conductive structure 4, e.g. a beam, and an interconnecting line 10L having one end connected with a rail 6 through a series connection of a terminal resistor 111L and a diode 12L. The diode 8L has forward direction directing from the metal body 4, e.g. the beam, toward the interconnecting line 10L whereas the diode 12L has forward direction directing from the end of interconnecting line toward the rail 6. A section 100 detects ground fault based on the voltage across the resistor 11L and locates the fault point.

5. 发明专利

JPH0365442A DC FEEDING CIRCUIT TROUBLE DETECTOR 失效
公开(公告)号：JPH0365442A
公开(公告)日：1991-03-20
申请号：JP20099789
申请日：1989-08-02
申请人： RAILWAY TECHNICAL RES INST
发明人： IDENO ICHIRO , TANAKA YUTAKA , ITO TOSHIKATSU
IPC分类号： B60M3/00
摘要： PURPOSE:To enable any troubles in a DC feeding circuit to be deteced from a power station by utilizing the DC side high-harmoics generated by a rectifier to detect the trouble with a phase angle obtained from the DC side high- harmonic voltage and high-harmonic current. CONSTITUTION:DC electric power converted by a rectifier 4 is supplied to an electric car 10 through a rail 8 and electric car line 9. The rail 8 and electric car line 9 of a feeding circuit comprise a conductor resistance component and inductance component determined by the geometric arrangement of the feeding circuit. These components are proportional to the length of the feeding circuit. The DC side high-harmonic degree n generated in the electric power conversion of the rectifier 4 is n=6m(m=1, 2...) in the rectifier 4 of 6 pulses and a reactor 7 is provided in series to a DC filter 6 for the sake of a measure against commu nicating induction, while a portion of current overlaps the DC current when current is supplied to the electric car 10 through the electric car line 9. A judge ment output section 3 calculates a phase angle of the sixth harmonic wave current and voltage flowing most largely to the line 9 from high-harmonic current and voltage extracted from a current converter 2 and voltage converter 1 to judge troubles from the calculated value and generates the output.

6. 发明专利

JP2000103262A AC-DC SWITCHING RAIL ARC PREVENTIVE CIRCUIT 失效
公开(公告)号：JP2000103262A
公开(公告)日：2000-04-11
申请号：JP27563798
申请日：1998-09-29
申请人： RAILWAY TECHNICAL RES INST
发明人： KAWAHARA TAKAHARU , HASE SHINICHI , ITO TOSHIKATSU
IPC分类号： B60M3/04 , B60M3/00
摘要： PROBLEM TO BE SOLVED: To prevent generation of a spark when the rearmost wheel separates from an AC feeding side rail in a switching place of AC feeding/DC feeding in an electric railway. SOLUTION: In this circuit, a bypass circuit 2 is arranged between a neutral point of an impedance bond 13 of an AC feeding side rail 9 of an AC-DC switching place and a neutral point of an impedance bond 14 of a DC feeding side rail 10, and when a rolling stock passes through the AC-DC switching place to the DC side from the AC side, a disconnector 1 is closed until the rearmost wheel separates from the DC feeding side rail, and an electric current flowing to the AC feeding side rail 9 from the DC feeding side rail 10 is flowed through the bypass circuit 2.

7. 发明专利

JPH09263240A ROLLING STOCK, AND STRINGING CONTACT ACCIDENT PREVENTION RAILROAD SYSTEM 失效
公开(公告)号：JPH09263240A
公开(公告)日：1997-10-07
申请号：JP7751796
申请日：1996-03-29
申请人： RAILWAY TECHNICAL RES INST , TORAY INDUSTRIES , NIPPON SHARYO SEIZO KK
发明人： SATO KIYOSHI , SUZUKI YASUFUMI , ITO TOSHIKATSU , AGUI KOJI , TANEDA KATSUJI , YAMAGIWA MASAYOSHI
IPC分类号： B61D17/12 , B60L3/04
摘要： PROBLEM TO BE SOLVED: To prevent a rolling stock from being damaged even when cut stringing is brought into contact with the roof of a rolling stock, by forming a roof whose structural body outside is formed with a conductive material layer and an electric insulation layer. SOLUTION: As a conductive material layer where a ground line 8 is brazed at the end part of a rolling stock structural body, a copper mesh 6a is bonded to the outer surface of a roof plate 3a with a phenolic resin adhesive 5b, and from the top side of the copper mesh 6a, room temperature curing 2-liquid mixing type urethane resin paint is applied. The liquid urethane rein paint is made to pass through the opening of the copper mesh 6a and penetrate to the surface of the roof 3a. The copper mesh 6a is coated with polyurethane resin paint film 5a as an electric insulation layer. It is thus possible to prevent a rolling stock from being damaged even when cut stringing is brought into contact with the roof of a rolling stock.

8. 发明专利

JPS62221939A DC FEEDING VOLTAGE DECREASE COMPENSATING DEVICE 失效
公开(公告)号：JPS62221939A
公开(公告)日：1987-09-30
申请号：JP4904886
申请日：1986-03-06
申请人： RAILWAY TECHNICAL RES INST , MEIDENSHA ELECTRIC MFG CO LTD
发明人： MIZUNO JIRO , NADATOMO KUNIO , ITO TOSHIKATSU , NOKI SADAJI , GONDO TOYOMI
IPC分类号： B60M3/02
摘要： PURPOSE:To decide securely in which side in the up and down lines an accident occurs, by furnishing a circuit system consisting of a diode bridge circuit and a semiconductor breaker, and making it possible to select the current direction. CONSTITUTION:If a grounding short circuit is generated at a point a, as well as DC high speed breakers 54F12 and 54F22 are operated, an accident current flows from a feeding line T1 through a diode bridge circuit DBG and a semiconductor breaker GTOCB. By this current, a relay Ry is operated to output the breaking instruction, and the semiconductor breaker GTOCB operates. Since this breaking is operated instantly, only very small input current amount flows to the line T2. And the direction of the accident current is determined by the relay Ry to decide in which side of lines the accident occurs. Moreover, by monitoring the rail potentials at points P, P11, and P12, the section of the accident can be determined.

9. 发明专利

JP2003032882A Circuit for preventing extension of hindrance caused by high-voltage grounding of dc electric railway 有权
标题翻译：用于防止直流电力铁路高压接地造成延误的电路
公开(公告)号：JP2003032882A
公开(公告)日：2003-01-31
申请号：JP2001216756
申请日：2001-07-17
申请人： Jr Soken Denki System:Kk , Railway Technical Res Inst , 株式会社ジェイアール総研電気システム , 財団法人鉄道総合技術研究所
发明人： KAWAHARA TAKAHARU , HASE SHINICHI , ITO TOSHIKATSU
IPC分类号： H02H9/06 , H02H7/26
摘要： PROBLEM TO BE SOLVED: To see that as far as the feeder of adjacent another substation does not stop by the rounding of the DC bus of one substation or the grounding of the low-resistance external wire within a pipe.
SOLUTION: In a series circuit of a discharge circuit 1, the discharge voltage is smaller than the working voltage of a DC high-voltage grounding relay 42, and a resistor 43 for current detection is provided in place of a DC high-voltage grounding relay between the grounding mat 23 and the rail 21 of the substation 5. Even if the discharge gap discharge electricity by the grounding 24 of the DC bus of the substation 5 and an AC breaker 6 and DC breakers 10 to 13 become off, that relay 42 does not work since the discharge voltage of the discharge gap 1 is lower than the working voltage of the DC high-voltage grounding relay 42 in the substation 28, and the feeder continues without disconnecting an AC breaker 29 and DC breakers 33 to 36.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：只要相邻另一个变电站的馈线不会因一个变电站的直流母线的倒圆或管道内的低电阻外部电线的接地而停止。解决方案：在放电电路1的串联电路中，放电电压小于直流高压接地继电器42的工作电压，并且提供用于电流检测的电阻器43来代替直流高压接地继电器在接地垫23和变电站5的轨道21之间。即使通过变电站5的直流母线的接地24和交流断路器6以及直流断路器10至13的放电间隙放电电力断开，该继电器42 由于放电间隙1的放电电压低于变电站28中的直流高压接地继电器42的工作电压，因此不进行工作，并且馈电器在不断开AC断路器29和直流断路器33至36的情况下继续进行。

10. 发明专利

JPH0614447A FAULT SELECTIVE DEVICE CAPABLE OF DECIDING BREAKDOWN 失效
公开(公告)号：JPH0614447A
公开(公告)日：1994-01-21
申请号：JP16889092
申请日：1992-06-26
申请人： HIGASHI NIPPON RYOKAKU TETSUDO , RAILWAY TECHNICAL RES INST , EIRAKU DENKI KK
发明人： INOUE HAJIME , ITO TOSHIKATSU , FUKAWA YUJI , ITO TAKESHI
IPC分类号： B60M3/00 , H02H3/087 , H02H3/44
摘要： PURPOSE:To prevent unnecessary breaking overlapping at a substation side by deciding upon a breakdown when a failure current is detected, and deciding the fact when a car itself cuts off. CONSTITUTION:When a failure current is detected by a primary detecting section 21, positive or zero or negative of a gradient of the failure current is monitored by a secondary detecting section 22 within a minute time. Decision is made on whether the failure is already in another process such as a breaking in a car, and when it is in the process, the car itself is so controlled that a breaking signal 4 is not outputted. At that time, a minute time T from a primary detection point to a secondary detection point is the function of a current increasing gradient (di/dt) at the primary detection point, T=K1+K2/(di/dt)1, (where K1 and K2 are the constant specified in advance). According to the constitution, unnecessary breaking overlapping at a substation side can be prevented.

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