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    • 3. 发明专利
    • HIGH-VOLTAGE LOAD SWITCH
    • JPH0660777A
    • 1994-03-04
    • JP20930092
    • 1992-08-05
    • ENERGY SUPPORT CORP
    • KAWASHIMA SUSUMUWATANABE HIROSHI
    • H01H33/12H01H33/16
    • PURPOSE:To suppress the generation of an arc at opening and improve interrupting performance by opening an auxiliary contact for interruption in the state where a current is limited by a current limiting element at the time of opening a switch. CONSTITUTION:A switch 1 is formed of main contact S1 and auxiliary contact S2 connected in series to each other and a current limiting element RG having barium titanate composition inserted to both ends of the main contact S1. When the switch 1 is laid in the opened state, the main contact S1 is first opened by a movable electrode, and a power source current I0 divides I2 to the RG. At this time, the I2 is a large current because of the low resistance of the RG in the initial stage, and a current I) carried to S1 is minimized to momentarily extinguish the arc by the I1. The RG shows a higher resistance as its temperature becomes higher by the current to limit the I1. The auxiliary contact S2 is opened at this point of time, whereby the generation of arc is suppressed, and electric interruption is completed. Thus the generation of arc can be suppressed even at a large current to improve interrupting performance.
    • 4. 发明专利
    • TRIPPING DEVICE-EQUIPPED BYPASS SWITCH FOR CONSTRUCTION WORK
    • JPH05135665A
    • 1993-06-01
    • JP29930391
    • 1991-11-14
    • CHUBU ELECTRIC POWERENERGY SUPPORT CORP
    • MURAKI SHIGEHARUYOSHIHARA HIROYUKIWATANABE HIROSHI
    • H01H9/54H01H33/59
    • PURPOSE:To close a bypass switch using a drive means and then use an overcurrent detection means to detect overload currents and a judgement means to judge the currents and a measurement means to measure the time during which the switch is closed and then nullify the opening drive of the switch if no overload is detected within a predetermined time. CONSTITUTION:When a bypass switch 1 is closed with different tap voltages on both banks, a timer relay 33 starts measuring time, and if overcurrents are passed to cables LA, LC on the side of the bank B within five minutes, current transformers CT1, CT2 detect the currents. When the threshold value of each transformer is exceeded, comparison circuits 27a, 27b provided in a carrier transmission circuit determine that overloads are exerted and then an OR circuit 28 sends outputs to a carrier drive circuit 29 and the outputs are input into the cables by signal inputting units 30a, 30b. A reception circuit 21 turns off a drive contact 23 in response to the outputs. Since a nullification contact 34 is opened, a relay is turned off and movable electrodes DL1, DV, DW, DN are opened. As a result, overload currents do not keep flowing through the transformers Tr1, Tr2 of the bank B, and fusing of primary cutouts PCU, PCV, PCW can be prevented.
    • 7. 发明专利
    • Switching controller and control method of distribution system
    • 交换控制器和分配系统的控制方法
    • JP2005354884A
    • 2005-12-22
    • JP2004176284
    • 2004-06-14
    • Energy Support Corpエナジーサポート株式会社
    • WATANABE HIROSHIMIURA TAKAYUKI
    • H02H3/38
    • PROBLEM TO BE SOLVED: To provide switching controller and control method of distribution system in which unnecessary opening of a load-break switch due to overcurrent of reverse power flow occurring upon service interruption of a distribution line due to some cause can be suppressed.
      SOLUTION: When a power flow direction decision section 34 decides reverse power flow, a voltage detection signal of an incoming line 13 arranged with a load-break switch 16 is outputted artificially to an overcurrent detecting section 32 even when the voltage of the incoming line 13 (i.e. control power supply) disappears. Consequently, no-voltage state of the distribution line 11 and the incoming line 13 is not detected at the overcurrent detecting section 32 even if reverse power flow from a distributed power supply 15 is regarded as overcurrent and detected and the distributed power supply 15 is stopped. Open operation (SO operation) of the load-break switch 16 is thereby locked and throw-in state is sustained.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种分配系统的切换控制器和控制方法,其中可以抑制由于某些原因而在分配线的服务中断时发生的反向功率流的过电流导致的负载中断开关的不必要的打开 。 解决方案:当功率流动方向决定部分34确定反向功率流时,即使当电流流过方向决定部分34的电压为零时,即使输入线路13的负载断路开关16的电压检测信号也被人为地输出到过电流检测部分32 输入线13(即控制电源)消失。 因此,即使从分布式电源15的反向电力流被认为是过电流并被检测并且分布式电源15被停止,在过电流检测部分32也没有检测到配电线路11和输入线路13的无电压状态 。 因此,负载断开开关16的开路动作(SO动作)被锁定,并且保持了投入状态。 版权所有(C)2006,JPO&NCIPI
    • 8. 发明专利
    • Switching controller and control method of distribution system
    • 交换控制器和分配系统的控制方法
    • JP2005354883A
    • 2005-12-22
    • JP2004176283
    • 2004-06-14
    • Energy Support Corpエナジーサポート株式会社
    • WATANABE HIROSHIMIURA TAKAYUKI
    • H02H3/38
    • PROBLEM TO BE SOLVED: To provide switching controller and control method of distribution system in which unnecessary opening of a load-break switch due to overcurrent of reverse power flow occurring upon service interruption of a distribution line due to some cause can be suppressed. SOLUTION: When throw-in of a load-break switch 16 is sustained by determining overcurrent of reverse power flow occurring upon service interruption of a distribution line 11 due to some cause, signal lines L2r and L2t from current transformers 24r and 24t to an overcurrent detecting section 32 are interrupted. More specifically, a power flow direction decision section 34 opens normal close contacts MS2r and MS2t by exciting an exciting coil 34a when it decides reverse power flow. Consequently, the overcurrent detecting section 32 does not perform overcurrent detection and a control section 35 does not excites a trip coil 25.Consequently, unnecessary opening of the load-break switch 16 due to generation of an overcurrent caused by a fault on the outside of premises can be suppressed. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种分配系统的切换控制器和控制方法,其中可以抑制由于某些原因而在分配线的服务中断时发生的反向功率流的过电流导致的负载中断开关的不必要的打开 。 解决方案:通过确定由于某些原因导致配电线路11的服务中断而发生的反向功率流的过电流来维持断路开关16的输入,来自电流互感器24r和24t的信号线L2r和L2t 过电流检测部32被中断。 更具体地,功率流动方向决定部分34在确定反向功率流动时激励励磁线圈34a来打开正常关闭触点MS2r和MS2t。 因此,过电流检测部32不进行过电流检测,控制部35不激励跳闸线圈25.因此,由于由外部的故障引起的过电流的产生,不必要地打开负载断路开关16 房屋可以被抑制。 版权所有(C)2006,JPO&NCIPI
    • 9. 发明专利
    • Protector and protecting method of distribution system
    • 分配系统的保护和保护方法
    • JP2005354882A
    • 2005-12-22
    • JP2004176282
    • 2004-06-14
    • Energy Support Corpエナジーサポート株式会社
    • WATANABE HIROSHIMIURA TAKAYUKI
    • H02H3/08H02H3/38
    • PROBLEM TO BE SOLVED: To provide a protector and a protection method of distribution system in which arrangement of a load-break switch can be simplified.
      SOLUTION: When a decision is made that power flows into premises (forward power flow), a control section 35 excites a trip coil 25 to open a load-break switch 17. When a decision is made that power flows out from premises (reverse power flow), the control section 35 does not excite the trip coil 25 but sustains throw-in of the load-break switch 17. Consequently, unnecessary opening of the load-break switch 17 due to generation of an eddy current caused by short circuit failure on the outside of premises can be suppressed in a distribution line 11 linked with a distributed power supply 15 in the premises. Furthermore, an operating power supply voltage on the consumer load 14 side is employed as a reference voltage for judging power flow direction. Since power flow direction is judged based on the phase of a load current I
      R for a control power supply voltage Vp, an extra voltage sensor is not required in the load-break switch 17.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种分配系统的保护器和保护方法,其中可以简化负载断路开关的布置。 解决方案:当决定功率流入房屋(正向功率流)时,控制部分35激励跳闸线圈25打开负载断路开关17.当决定电力从房屋流出时 (反向功率流)时,控制部35不激励跳闸线圈25,而是保持负载断路开关17的插入。因此,由于由于产生的涡电流而引起的负载断路开关17的不必要的打开 在与房屋内的分布式电源15连接的配电线路11中,可以抑制房屋外部的短路故障。 此外,消费者负载14侧的工作电源电压被用作用于判断电力流动方向的参考电压。 由于基于用于控制电源电压Vp的负载电流I R 的相位来判断功率流动方向,所以在负载断路开关17中不需要额外的电压传感器。

      COPYRIGHT (C)2006,JPO&NCIPI