Zero-sequence voltage trajectory analysis for unbalanced distribution networks on single-line-to-ground fault condition
Zero-sequence voltage trajectory analysis for unbalanced distribution networks on single-line-to-ground fault condition
复制标题
单线接地故障情况下配电网不平衡零序电压轨迹分析
DOI：
10.1016/j.epsr.2018.03.024
复制
发表时间：
2018-08
影响因子：
3.9
通讯作者：
Xu Xianyong
中科院分区：
文献类型：
--
作者：
Meng Jun;Wang Wen;Tang Xin;Xu Xianyong
单相接地故障的故障相位识别是中压电网消弧措施的关键。传统的方法通常假设网络的分布参数是对称的，因此不适用于不对称网络，特别是当接地电阻比较高时。本文详细分析了零序电压随接地电导变化的轨迹。给出了不同不对称度下电压幅值和相角的变化规律。然后，在欠补偿和过补偿接地条件下，分别严格讨论了每相SLG故障时它们的独特变化规律的范围。在此基础上，提出了一种基于故障状态下零序电压变化规律的故障相识别方法。仿真结果验证了所得到的变化规律，验证了所提出的故障相识别方法的有效性，保证了不对称网络和高阻接地故障情况下故障相的准确识别。
Faulty phase recognition under single-line-to-ground (SLG) fault condition is critical for some arc suppression methods in medium voltage (MV) networks. Traditional methods usually assume that the distributed parameters of the network are symmetrical, thus are unsuitable for the asymmetrical networks, especially when the ground-fault resistance is relatively high. In this paper, the trajectory of the zero-sequence voltage with the change of ground-fault conductance is analyzed in detail. The magnitude and phase angle variation rules of the voltage under different asymmetry ratios are presented. Then, the ranges of their unique variation rules on SLG fault for each phases are separately and strictly discussed both for the under-compensated and over-compensated grounding conditions. Furthermore, a faulty phase recognition method is proposed based on the variation rules of zero-sequence voltage on faulty condition. Simulation results verify the concluded variation rules and validate the effectiveness of the proposed fault phase recognition method, which ensures exact recognition of faulty phase in asymmetrical network and high-resistance ground fault condition.
登录
查看更多内容
信号处理与分析在高阻抗接地配电网单线接地（SLG）故障定位检测中的应用
DOI：
10.1049/iet-gtd.2015.0555
发表时间：
2016-02
期刊：
IET Generation, Transmission & Distribution
影响因子：
--
作者：
Yajie Li;Xiaoli Meng;Xiaohui Song
通讯作者：
Xiaohui Song
DOI：
10.1109/tdc.2003.1335338
发表时间：
2003-09
期刊：
2003 IEEE PES Transmission and Distribution Conference and Exposition (IEEE Cat. No.03CH37495)
影响因子：
--
作者：
M. Janssen;S. Kraemer;R. Schmidt;K. Winter
通讯作者：
M. Janssen;S. Kraemer;R. Schmidt;K. Winter
影响因子：
4.4
作者：
M. Brenna;E. De Berardinis;Luca Delli Carpini;P. Paulon;P. Petroni;G. Sapienza;G. Scrosati;D. Zaninelli
通讯作者：
M. Brenna;E. De Berardinis;Luca Delli Carpini;P. Paulon;P. Petroni;G. Sapienza;G. Scrosati;D. Zaninelli
DOI：
10.1016/j.ijepes.2016.02.050
发表时间：
2016-11
影响因子：
5.2
作者：
X. Xia;Yun Zhou;Chunhui Fu;Zhengxin Zhou;Yusheng He
通讯作者：
X. Xia;Yun Zhou;Chunhui Fu;Zhengxin Zhou;Yusheng He
影响因子：
4.4
作者：
Aaron Kalyuzhny
通讯作者：
Aaron Kalyuzhny