Influence of Current Reverse on Protection for Series Compensated Line

摘要：

　　The impacts of current reverse caused by the faults of line with series compensation (LSC) on the widely-used current differential protections are analyzed.The theoretical analysis and simulative results show that, the zero-sequence differential protection for the high-resistance grounding faults may decrease its sensitivity and even refuse to act during the current reverse,aiming at which, an improved algorithm of zero-sequence differential protection is proposed.It adjusts adaptively to the parameters of line and compensating capacitor to effectively solve the problem of sensitivity reduction.The effectiveness and reliability of the proposed algorithm are verified by the RTDS simulations and practical engineering applications.

关键词： Current reverse LSC (line with series compensation) Ultra high-voltage transmission line zero-sequence differential protection

作者: Xiaotong Zhu Qingchun Zhao Hua Xie Jun Shen Zhong Wang

作者单位: NR Electric Co., Ltd.

会议类型: 国际会议

会议名称: 第六届现代电力系统自动化和保护国际会议

会议地点: 南京

会议语种:英文

页码: 59-65

在线出版日期: 2015-09-21（万方平台首次上网日期，不代表论文的发表时间）