1、隔离刀闸分支线路弧光接地装置在 3-35kv 电力系统中，用电设备一般都是旋转电机居多，如果不分稳定弧光接地故障和短暂接地故障而直接令接触器单相直接接地变为金属性接地会引起保护差动跳闸，这样会造成停机，不利于生产。装置能区分出短暂的弧光接地故障和长期稳定的弧光接地故障，避免了不必要的麻烦。In 3-35 kv power system, power equipment is usually a rotary motor, if both stable arc grounding fault and short, direct the contactor single-phase earth f
2、ault and grounding into gold attribute will directly cause the differential protection trip, this will cause downtime, is not conducive to production. Device can distinguish between the short arc grounding fault and long-term stability of the arc grounding fault, to avoid the unnecessary trouble. 系统
3、发生谐振时，微机控制器根据谐振类型进行不同的消谐：如果系统发生的谐振是分频谐振，微机控制器瞬间短接 pt 的开口三角绕组，破坏谐振参数，消除谐振。如果系统发生的谐振是工频或高频谐振，微机控制器在pt 的开口三角绕组 接入大功率消谐电阻进行消谐。http:/ http:/ http:/ http:/System resonance occurs, the microcomputer controller according to different types of resonant harmonic elimination: if the system resonance frequency
4、resonance, microcomputer controller instantaneous short after the open delta winding of pt, destroy the resonance parameters, eliminating harmonic. If the system is power frequency or high frequency resonant, microcomputer controller in pt the open delta winding is connected to the power harmonic el
5、imination resistor for harmonic elimination. 如果接地故障是不稳定的间歇性弧光接地，则微机控制器判断接地的相别，同时发出指令使故障相的真空接触器闭合，投入高能限压器，限制故障相的弧道恢复电压，吸收接地引起的电磁能量，减缓系统振荡，使弧道的介质恢复抗电强度 ujf 大于弧道恢复电压 uhf。If earth fault is unstable intermittent arc grounding, the microcomputer controller dont judge grounding, and issuing commands make f
6、ault phase, vacuum contactor is closed into high pressure limiting device, restrict arc way recovery voltage of fault phase, absorption of ground caused by the electromagnetic energy, slow down the system oscillation, restoring the arc, medium resistance to electric intensity ujf recovery voltage is
7、 greater than the arc road, uhf. 使恢复电压无法再次击穿故障点，从而完成消弧。数秒后，令故障相的高压真空接触器断开，如果是短暂的弧光接地，系统恢复正常运行；如果接地故障时稳定的弧光接地， 矿用网片控制器令故障相和接地的高压真空接触器 kd 同时闭合，使系统由稳定的弧光接地故障快速转变成稳定的金属性接地，装置认定此故障为永久性电弧接地故障，等待值班人员或微机选线装置处理。The recovery voltage breakdown point of failure, cant again to complete the arc suppression. After
8、 a few seconds, make the fault phase of high voltage vacuum contactor disconnect, if it is a short arc grounding, system back to normal operation; If stability when the ground fault arc grounding, controller for fault phase and ground of high voltage vacuum contactor kd closed at the same time, make
9、 the system by the stability of the arc grounding fault quickly turn into a stable metallicity, the device that the permanent arc grounding fault, the fault for waiting for the personnel http:/ http:/ http:/ http:/on duty or of line selection device processing. 线路检修，事先不向调度部门申请办理停电手续，随意带 PE 给 水管负荷拉开分
10、支线路隔离刀闸或带负荷拉开配电变压器的高压跌落开关，造成刀闸间弧光短路而引发谐振。Line maintenance, does not apply to the dispatching department in advance to deal with the formalities that power outages, random load pull open branch circuit breaker isolation or with falling load pull distribution transformer high-voltage switch, breaker c
11、aused the arc between short circuit and cause resonance. 因此国家标准规定这类电网在发生单相接地故障后允许短时间（2 小时）带故障运行，所以大大提高了该类电网的供电的可靠性。Therefore this type of power grid of national standard in the single-phase earth fault occurred after short time (2 hours) was allowed to take fault operation, so for this kind of power grid is greatly improved the reliability of power supply.
