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1. 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.

2. 发明专利

JPH0277338A D/C FEEDER CIRCUIT PROTECTIVE DEVICE 失效
公开(公告)号：JPH0277338A
公开(公告)日：1990-03-16
申请号：JP23056388
申请日：1988-09-14
申请人： HIGASHI NIPPON RYOKAKU TETSUDO , NISHINIPPON RYOKAKU TETSUDO KK , RAILWAY TECHNICAL RES INST , SHIZUKI ELECTRIC
发明人： KOBAYASHI TERUO , INOUE HAJIME , TSUKUDA SAKURO , TANAKA YUTAKA , IDENO ICHIRO , HAYASHI MASAMI , SHIMADA ICHIRO , INOUE NORIKAZU
IPC分类号： B60M3/02 , H02H9/06
摘要： PURPOSE:To protect a D/C feeding circuit by connecting a capacitor, and providing a trigger device to reduce the potential when it reaches a specific voltage, as well as connecting discharge tubes in series between the first lead connected to an electric car line holding beam or the like and the second lead connected to the rail side. CONSTITUTION:The first lead 1 is connected to an electric car line holding beam and the like, and the second lead 2 is connected to a rail side. Between the both leads, a series circuit of discharge tubes 3 and 4, a series circuit of voltage divider resistances 5 and 6, and a series circuit of a resistance 7 for surge absorber and a capacitor 8 for pulse generation are connected in parallel each other. Furthermore, a series circuit of a discharge tube 9 for pulse generation and the primary side of a transformer 10 is connected in parallel to the capacitor 8. The secondary side of the transformer 10 is composed in a closed circuit, and a resistance 13 is connected in parallel to a capacitor 12. The connection P of the discharge tubes 3 and 4, and the connection Q of the voltage divider resistances 5 and 6 are connected. Consequently, the operation at the time when a trouble is generated can be carried out securely while preventing an error operation by the surge voltage.

3. 发明专利

JPH0923657A CONTROLLING OF INVERTER DEVICE 失效
公开(公告)号：JPH0923657A
公开(公告)日：1997-01-21
申请号：JP17169695
申请日：1995-07-07
申请人： HIGASHI NIPPON RYOKAKU TETSUDO , MEIDENSHA ELECTRIC MFG CO LTD
发明人： INOUE HAJIME , SHIBUYA TADASHI , ONO MASAAKI
IPC分类号： H02J3/06 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To prevent the overload of an inverter device (SVG) when active power and reactive power are simultaneously input. SOLUTION: In controlling an inverter device wherein reactive power is compensated, with active power being interchanged between two systems by means of two inverters to which a serial circuit is connected, limiters 7', 8 which limit compensation amounts from an active power compensation detector 5 and a reactive power compensation detector 6 to a rated value of the device are installed. The control is conducted with top priority being put on a reactive power compensation amount Q from the limiter 8. Then, in a device excessive power calculating circuit 10, the square of the reactive power compensation amount Q(%) is found and the obtained value is subtracted from the device rated value (100%) and then the square root of the result (√(1 -Q )=P) is found, and based on the obtained excessive power signal (active power), a limit value of the limiter 7' is changed to P(%) and a compensation amount of the active power is limited accordingly. By this method, the inverter device can be so controlled that the vector sum of the compensation amounts of active power and reactive power may not exceed the rating of the device.

4. 发明专利

JPH1111184A METHOD FOR CONTROLLING SELF-EXCITED INVERTER FOR COMPENSATING FEEDER 失效
公开(公告)号：JPH1111184A
公开(公告)日：1999-01-19
申请号：JP16361897
申请日：1997-06-20
申请人： HIGASHI NIPPON RYOKAKU TETSUDO , MEIDENSHA ELECTRIC MFG CO LTD
发明人： INOUE HAJIME , ONO MASAAKI
IPC分类号： H02H9/02 , B60M3/00 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To reduce the amount of overcurrent resisted by an inverter during the rushing-in of load. SOLUTION: This control method suppresses the influences of an excess current produced by the rushing in of a load, a decrease in wire voltage, and the advance of phase in a self-excited inverter which is connected to an ac feeder to compensate reactive power and to deliver effective power. In this case, a load current A is full-wave rectified 11, and a rectified output B is peak held 12 so that a peak value is attenuated with a predetermined time constant; then the rectified output B is sampled and held at O points (0 deg., 180 deg.) of the load current, and a comparator 17 compares the current full-wave rectified value B with a value C that is sampled and held half a cycle earlier than the current value, and if the value is equal to or greater than a set value, Iset, it is regarded as indicating the detection E of the rushing-in of the load, and then the voltage and phase of the inverter are corrected respectively by an inverter voltage lowering signal indicating a predetermined correction and by a phase advance signal.

5. 发明专利

JPH0923585A CONTROL OF REACTIVE POWER COMPENSATION 失效
公开(公告)号：JPH0923585A
公开(公告)日：1997-01-21
申请号：JP17169995
申请日：1995-07-07
申请人： HIGASHI NIPPON RYOKAKU TETSUDO , MEIDENSHA ELECTRIC MFG CO LTD
发明人： INOUE HAJIME , SHIBUYA TADASHI
IPC分类号： H02J3/16 , G05F1/70 , H02J3/18
摘要： PROBLEM TO BE SOLVED: To compensate reactive power to alleviate voltage drop in the system even if the reactive power of load is changed suddenly. SOLUTION: A voltage control circuit of an inverter is designed as an open voltage control circuit which inputs, as the reference input, the reference voltage V0 which is equivalent to a system voltage V0 , a limiter 11 which limits a reactive power element current ix L in the load side to the rating of the inverter generates a reactive current ix L supplied by the inverter, a circuit 12 obtains voltage drop ▵V1 by an internal impedance of the inverter and a voltage drop ▵V2 by a reactance in the system side is obtained from ix L and a reactive power element current ixi of the inverter. When the reference input V0 is compensated by ▵V1 when ix L is within the inverter capacity. However, when ix L exceeds the inverter capacity, it is compensated by ▵V1 and ▵V2 to quickly control an inverter output voltage by the open control method. Moreover, deviation between ix L and ixi is amplified by a deviation amplifying circuit 14 and its signal is added to the reference input V0 to eliminate control error by the open loop control method with a feedback control in view of keeping the control accuracy.

6. 发明专利

JPH03284431A DC VOLTAGE DETECTOR 失效
公开(公告)号：JPH03284431A
公开(公告)日：1991-12-16
申请号：JP8661290
申请日：1990-03-30
申请人： HIGASHI NIPPON RYOKAKU TETSUDO , SHIZUKI ELECTRIC
发明人： INOUE HAJIME , SHIMADA ICHIRO , UEKI YOSHIHIRO
IPC分类号： B60M3/00
摘要： PURPOSE:To detect surely a ground fault producing site when voltage is caused by the ground fault between both first and second lead wires, by sequentially discharging first and second pulse generating discharge tubes to detect the current supply condition of the second pulse generating discharge tube with a current supply detecting means. CONSTITUTION:When voltage is applied between first and second lead wires 1, 2, a first pulse generating capacitor 4 is charged so that the terminal voltage of the capacitor 4 gradually rises. When the discharge starting voltage of the first pulse generating discharge tube 6 is reached, the discharge tube 6 is discharged to charge a second pulse generating capacitor 5. When the terminal voltage of the capacitor 5 is gradually increased to reach the discharge start voltage of the second pulse generating discharge tube 7, the discharge tube 7 discharges operatively to open a driver 8. Since a driver terminal 9 opens an operation indicating contacts 11, 12 along with the opening of the driver, a ground fault generating site is detected through a rail way information transmission network with the then output signal. The driver terminal 10 is opened along with the opening of the driver 8 to stop the operations of the respective discharge tubes 6, 7.

7. 发明专利

JP2007282337A Device for determining line wire grounded circuit in direct-current electric railroad 审中-公开
标题翻译：用于确定直流电动铁路中的线路接地电路的装置
公开(公告)号：JP2007282337A
公开(公告)日：2007-10-25
申请号：JP2006103397
申请日：2006-04-04
申请人： Eiraku Denki Kk , 永楽電気株式会社
发明人： INOUE HAJIME , KOIKE MICHIO , NISHIDA KOJI
IPC分类号： H02H3/38
摘要： PROBLEM TO BE SOLVED: To provide a device that, when a line wire grounding fault occurs in an electric railroad, determines a line of the grounding fault and thereby limits a range of locating the point of the grounding fault, and is thus helpful in shortening a time for finding a point of the cause.
SOLUTION: A line wire grounding fault determining device 500 is newly installed in an electric railroad substation. The line wire grounding fault determining device is supplied with, at least, an output signal of a direct-current ground-fault overvoltage relay 64P, data from DCPT 504 for indicating the value of a potential difference between a ground mat 209 and a rail 304, and data from DCCTs 505, 506 for indicating feeder line current values. When temporal agreement between the phenomenon of an increase in the potential difference between the ground mat 209 and the rail 304 and the phenomenon of an increase in feeder line current is detected between a certain time before and a certain time after a point of time, when the direct-current ground-fault overvoltage relay 64P outputs a grounding fault detection signal based on a voltage value and a current value obtained between a certain time before and a certain time after a point of time, when the values and the output signal from the direct-current ground-fault overvoltage relay 64P rise, a line of grounding fault display is outputted.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种当在电力铁路中发生线路接地故障时确定接地故障的线路，从而限制接地故障点的定位范围的装置，因此有助于缩短找到原因的时间。
解决方案：线路接地故障判定装置500新安装在电气铁路变电站中。线路接地故障判定装置至少提供直流接地故障过电压继电器64P的输出信号，来自DCPT 504的数据，用于指示接地垫209和轨道304之间的电位差的值以及来自DCCT 505,506的用于指示馈线电流值的数据。当在一段时间之后的一定时间和某一时间之间检测到接地垫209和轨道304之间的电位差增加的现象之间的时间一致性以及馈线的电流增加的现象时，直流接地故障过电压继电器64P基于在时间点之后的一定时间和一定时间之间获得的电压值和电流值，输出接地故障检测信号，当电流值和来自直流接地故障过电压继电器64P上升，输出接地故障显示线。版权所有（C）2008，JPO＆INPIT

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