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DEVICE FOR PROTECTING AGAINST SIGNLE-PHASE GROUND FAULTS IN LOWER-VOLTAGE NETWORK WITH ISOLATED NEUTRAL

机译:用于隔离中性点的低压电网中的单相接地故障的保护装置

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to relay protection u044du043bu0435u043au0442u0440u043eu0441u043du0430u0431u0436u0435u043du0438u00a0 systems with isolated neutral and can be used u0434u043bu00a0 protection of single-phase circuits on the earth the longitudinal u044du043bu0435u043au0442u0440u043eu0441u043du0430u0431u0436u0435u043du0438u00a0 u043du0435u0442u00a0u0433u043eu0432u043eu0439 load rail.the purpose of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 - prevention of false positives when single-phase earth u0437u0430u043cu044bu043au0430u043du0438u00a0u0445 higher u043du0430u043fu0440u00a0u0436u0435u043du0438u00a0 network with isolated neutral, located at on u0431u0449u0438u0445 support with u043bu0438u043du0438u00a0u043cu0438 lower u043du0430u043fu0440u00a0u0436u0435u043du0438u00a0 protected network.the device u0441u043eu0441u0442u043eu00a0u0449u0435u0435 from the measuring body 1 u043du0430u043fu0440u0430u0432u043bu0435u043du0438u00a0 power of zero sequence network of lower u043du0430u043fu0440u00a0u0436u0435u043du0438u00a0, for example, 10 kv, and the measuring body 2 u043du0430u043fu0440u00a0u0436u0435u043du0438u00a0 zero sequence network of higher u043du0430u043fu0440u00a0u0436u0435u043du0438u00a0, e.g. 35 kv, ban logical element 3, the element 4 and the executive u044du043bu0435u043cu0435 extracts time u043du0442u0430 5works with u0437u0430u043cu044bu043au0430u043du0438u00a0u0445 single-phase earth network of higher u043du0430u043fu0440u00a0u0436u0435u043du0438u00a0 u0431u043bu0430u0433u043eu0434u0430u0440u00a0, under the influence of the measuring body 2 u043du0430u043fu0440u00a0u0436u0435u043du0438u0435 zero after u0434u043eu0432u0430u0442u0435u043bu044cu043du043eu0441u0442u0438 works ban logic element 3, which prevents the separation of the extracts time 4 and the executive element 5 protection. 1 il.
机译:本发明 u043e u0442 u043d u043e u0441 u0438 u0442 u0441 u00a0以继电保护 u044d u043b u0435 u043a u0442 u0440 u043e u0441 u043d u043d u0430 u0431 u0436 u0435 u043d u0438 u00a0系统具有隔离的中性点,可以用于接地单相电路的保护。纵向 u044d u043b u0435 u043a u0442 u0440 u043e u0441 u043d u04a u0431 u0436 u0435 u043d u0438 u00a0 u043d u0435 u0442 u00a0 u0433 u043e u0432 u043e u0439负载导轨的用途是 u0438 u0437 u043e u0431 u0440 u0435 u0442 u0435 u043d u0438 u00a0-防止单相接地时 u0437 u0430 u043c u044b u043a u0430 u043d u043d u0438 u00a0 u0445较高 u043d u0430 u043f u0440 u00a0 u0436 u0435 u043d u0438 u00a0网络(带隔离中性线),位于 u0431 u0449 u0438 u0445支持上,带有 u043b u0438 u043d u0438 u00a0 u043c u0438较低的 u043d u0430 u043f u0440 u00a0 u0436 u0435 u043d u0438 u00a0受保护的网络。设备 u0441 u043e u0441 u0442 u043e u来自测量体1的00a0 u0449 u0435 u0435 u043d u0430 u043f u0440 u0430 u0432 u043b u0435 u043d u0438 u00a0较低 u043d u0430 u043f u0440的零序网络功率u00a0 u0436 u0435 u043d u0438 u00a0,例如10 kv,测量体2 u043d u0430 u043f u0440 u00a0 u0436 u0435 u043d u0438 u00a0较高 u043d的零序网络 u0430 u043f u0440 u00a0 u0436 u0435 u043d u0438 u00a0,例如35 kv,禁止逻辑元素3,元素4和执行程序 u044d u043b u0435 u043c u0435提取时间 u043d u0442 u0430 5个带有 u0437 u0430 u043c u044b u043a u0430 u043d u0438的作品 u00a0 u0445较高的单相接地网络 u043d u0430 u043f u0440 u00a0 u0436 u0435 u043d u0438 u00a0 u0431 u043b u0430 u0433 u0433 u043e u0434 u0430 u0440 u0040在测量体2的影响下 u043d u0430 u043f u0440 u00a0 u0436 u0435 u043d u043d u0438 u0435在 u0434 u043e u0432 u0432 u0430 u0442 u0435 u043b u043b u044c u043d u043e u0441 u0442 u0438禁止逻辑元素3,这防止了提取时间4和执行元素5的保护分开。 1升

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