新乡供电公司,河南,新乡,453002
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杨忠礼 1, 宋国兵 2, 姚永峰 1, 等. 基于跨线故障判别的平行双回线路选相方案[J]. 西安交通大学学报, 2011,45(2):97-101.
Fault Phase Selector of Protective Relay for Cross Country Fault on Double Circuit Lines[J]. 2011, 45(2): 97-101.
针对相电流差选相元件在平行双回线首端发生跨线故障时会误选相的问题
提出了基于故障分量方向元件的选相方案.将平行双回线路跨线故障作为复故障
分析了相电流差选相元件在线路首端跨线故障时误选相的原因.在故障被判为跨线故障的情况下
利用电压元件选出故障相
对每一回线
利用故障分量方向元件判断对应相故障是否在本回线路内部
当故障分量电压与故障分量电流间的相角在0°~180°时
判故障在本回线内
从而选出每回线的故障相.EMTP仿真结果表明
该方案在各种跨线故障下均能正确选相
可直接应用于现有基于单回线信息的微机保护装置.
Aiming at the misoperation of the conventional phase selector by phase current-differential during some cross country faults
a fault phase selector for double circuit lines on the same tower using fault superimposed components direction element is developed
where the cross country fault of double circuit lines is considered as multiple faults of single circuit lines to analyze the misoperation of conventional phase selector. The new scheme selects fault phase by fault superimposed component voltage
and the fault lines of the corresponding fault phase are selected with fault superimposed component direction element. If the phase angle between faults superimposed component voltage and current of either double circuit line is in the range of 0°~180°
the fault is in the line. The EMTP simulation results show that the proposed scheme is applicable to microcomputer-based protection.
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交直流混联系统对距离保护暂态超越的影响及解决措施. 西安交通大学学报,2010,44(4):57-61.
故障全量的分相复合阻抗输电线路纵联保护原理. 西安交通大学学报,2010,44(2):92-97.
基于模型识别的平行线路零序方向元件. 西安交通大学学报,2010,44(2):102-107.
双端带并联电抗器的输电线路纵联保护. 西安交通大学学报,2010,44(2):99-103.
继电保护装置信号端口电磁干扰传播通道的建模与仿真. 西安交通大学学报,2009,43(10):104-108.
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带可控串补和可调电抗器输电线路纵联保扩新原理. 西安交通大学学报,2008,42(10):1259-1263.
输电线路超高速保护中小波算法的研究. 西安交通大学学报,2008,42(2):194-198.
变压器漏电感参数在线辨识方法研究. 西安交通大学学报,2008,42(2):199-203.
基于励磁电感参数识别的变压器励磁涌流判别方法. 西安交通大学学报,2007,41(12):1214-1218.
一种新的高压线路振荡选相元件. 西安交通大学学报,2007,41(8):945-953.
一种新型的分布式隐私保护计算模型及其应用. 西安交通大学学报,2007,41(8):954-958.
基于形态梯度的输电线电流行波比较式超高速保护. 西安交通大学学报,2007,41(4):484-488.
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