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A METHOD OF FAULT PHASE SELECTION AND FAULT TYPE DETERMINATION
A METHOD OF FAULT PHASE SELECTION AND FAULT TYPE DETERMINATION
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机译：故障选相和故障类型确定的方法
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摘要
The present invention is concerned with a method for faulted phase selection and fault type determination in electric power lines applicable both to series compensated and uncompensated power lines, fit for use in the power industry for overhead and overhead-cable transmission or distribution lines. The method comprising a fault inception detection and an estimation of fault phase current signals, pre-fault current signals and zero-sequence current in order to receive the absolute value of incremental current signals ( IAB, IBC, ICA ) and their maximum value ( lmax ) from which real value indicators for phase to phase faults ( SA, SB, Sc ), real value indicators for 3-phase fault ( S3A,S3B,S3C ) and a real value indicator for ground fault ( SG ) are determined, the inventive method further comprises the following steps: - calculating the maximum of the value of all fault type indicators (Fflt) according to the formula: Fmax = max ((F flt)), where the index (flt) is an integer number from 1 to 10 and means one specific type of all type faults, - determination of the fault type as one of the indicator (Fflt) having the maximal value, which at the same time determines the fault type on the base that the index (flt) means the type of fault, where if: flt = λ then there is a phase A to ground G fault, flt = 2 then there is a phase B to ground G fault, flt = 3 then there is a phase C to ground G fault, flt = 4 then there is a phase A to phase B fault, flt = 5 then there is a phase B to phase C fault, flt = 6 then there is a phase C to phase A fault, flt = 7 then there is a phase A to phase B and to ground G fault, flt = 8 then there is a phase B to phase C and to ground G fault, flt = 9 then there is a phase C to phase A and to ground G fault, flt = 10 then there is a phase A to phase B to phase C fault, - presentation the of real fault type indicator (Fmax) in the protective relay (2) or in the means connected to the protective relay.
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机译：本发明涉及一种用于电力线中的故障相选择和故障类型确定的方法，其适用于串联补偿和未补偿的电力线，适用于电力工业中用于架空和架空电缆的传输或配电线。该方法包括故障开始检测以及故障相电流信号，故障前电流信号和零序电流的估计，以便接收增量电流信号的绝对值（I AB ，I < Sub> BC ，I CA ）及其最大值（l max ），从中可以得出相间故障的实际值指标（S A < / Sub>，S B ，S c ），三相故障的实际值指示器（S3A，S3B，S3C）和接地故障的实际值指示器（S确定 G ），本发明方法还包括以下步骤：-根据下式计算所有故障类型指标（F flt ）的最大值。 max = max（[F flt ）），其中索引（flt）是从1到10的整数，表示所有类型故障中的一种特定类型-确定故障类型作为具有最大值的指标（F flt ）之一，在同一时刻ime根据索引（flt）表示故障的类型来确定故障类型，其中，如果：flt =λ则有一个接地G故障的相A，flt = 2则有一个B相接地G的故障，flt = 3则有一个C相接地G故障，flt = 4则有一个A相至B相故障，flt = 5则有一个B相至C相故障，flt = 6则有a相C相到A相故障，flt = 7，然后有A相到B相并接地G故障，flt = 8，然后有B相到C相并接地G，flt = 9然后存在a相C相至A相并接地G故障，flt = 10，则A相至B相至C相故障-在保护装置中显示实际故障类型指示器（F max ）继电器（2）或连接到保护继电器的装置。
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