A New Distance Relaying Algorithm for Single-phase-to-ground Faults on Series-compensated Parallel Lines without the Parameter Requirement of Mutual Coupling and Series Capacitor Device

作者：Xu, Zhenyu^*; Zhang, Jinhu; Su, Zhipeng; Zhang, Xu; Iqbal, Muhammad Javed; Wen, An; Yang, Qixun

来源：Electric Power Components and Systems, 2014, 42(6): 650-657.

DOI：10.1080/15325008.2014.880970

• series compensated
• capacitor
• series-compensated parallel lines
• distance relay
• metal oxide arrestor
• mutual coupling

A new distance-relaying algorithm for single-phase-to-ground faults on series-compensated parallel transmission lines is proposed in this article. Fault impedance can be calculated using this algorithm without any parameters requirement of mutual coupling and series capacitor device (series capacitor/metal oxide arrestor/discharging gap). The series capacitor device is simplified as linearized impedance during faults. The parameters of mutual coupling and a series capacitor device can be used as variables in the fault loop equations. Real-time digital simulator tests show that the proposed distance-relaying algorithm can obtain more accurate results than traditional distance-relaying algorithms for series-compensated parallel transmission lines.

• 出版日期2014-4-26
• 单位华北电力大学; 南方电网科学研究院有限责任公司; 华北电力大学（保定）