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    • 2. 发明申请
    • ZERO SEQUENCE CURRENT GENERATOR
    • 零序电流发生器
    • WO2008133543A1
    • 2008-11-06
    • PCT/RU2007/000213
    • 2007-04-28
    • "TAVRIDA ELECTRIC INDUSTRIAL GROUP"CHALY, Alexei MikhailovichGORELOV, Vyacheslav NikolaevichINYACHIN, Alexander Nikolaevich
    • CHALY, Alexei MikhailovichGORELOV, Vyacheslav NikolaevichINYACHIN, Alexander Nikolaevich
    • H02H7/26H02H3/16
    • H02H3/17
    • A facility for an identification of an earth-fault feeder in networks with an isolated neutral comprises filters of zero sequence currents, which are included in a circuit of each outgoing filter, and the filter of the zero sequence voltage, which is connected to busbars. A generator of zero sequence current is connected to busbars through a switch, which is controlled by means of control and operation module, which is connected to the zero sequence voltage filter and which accomplishes temporarily closing the above- mentioned switch, when zero sequence voltage exceeds its definite level. The control and operation module comprises a time delay and provides with an identification of one phase-to-ground fault with respect to the zero sequence. The zero sequence current generator comprises a reactor with three-phase non-saturable iron circuit and with windings, which are connected in star with a grounded neutral. To the control and operation module there is connected a drive in the form of series-connected selector and vacuum switching module with three vacuum switches.
    • 用于识别具有隔离中性点的网络中的接地故障馈线的设备包括零序电流的滤波器,其包括在每个输出滤波器的电路中,以及连接到母线的零序电压的滤波器。 零序电流发生器通过开关连接到母线,开关通过控制和运行模块进行控制,控制和运行模块连接到零序电压滤波器,当零序电压超过时,暂时关闭上述开关 其确定水平。 控制和操作模块包括时间延迟并且相对于零序列提供一个相对地故障的识别。 零序电流发生器包括具有三相不可饱和铁电路和绕组的电抗器,其与接地中性线连接成星形。 控制和运行模块通过三个真空开关连接一个串联选择器和真空开关模块的驱动器。