摘要
为解决矿井电网系统漏电故障选线这一安全供电技术难题,提出了一种基于暂态信号特征监测与辨识技术的单相接地故障选线方法。利用变分模态分解算法对线路测量的暂态零序电流信号进行解析,制定了以特征模态分量模最大值极性和线路模态能量权重因子差异性相结合比较的故障选线判据。通过设定故障触发条件对矿井电网系统选线模型进行仿真环境测试,结果表明该选线方法不受故障合闸角、接地电阻和消弧线圈补偿度的影响,均可实现故障线路的识别,具有较强的工程适应性。
For the purpose of solving the safety power supply problem that is leakage fault selection in the mine distribution network system, we proposed a single-phase ground fault selection method based on transient signal features identification technology. In this paper, the line transient zero-sequence current signal is analyzed with the variational modal decomposition algorithm, which develops a fault selection criterion combining the mode maximum polarity of the feature modal component and the line modal energy weight factor discrepancy. With different fault triggering conditions, the simulation of mine distribution network system is conducted. The results demonstrated that the selection method is not affected by the fault closing angle, ground resistance, and arc suppression coil compensation, which can be realized in fault line identification and provides excellent engineering adaptability.
作者
李小敏
Li Xiaomin(College of Electrical and Control Engineering,Henan University of Urban Construction,Pingdingshan 467036,China)
出处
《国外电子测量技术》
北大核心
2023年第2期164-170,共7页
Foreign Electronic Measurement Technology
基金
国家青年科学基金(61803145)项目资助
关键词
矿井电网
漏电保护
故障选线
变分模态分解
mine distribution network
leakage protection
fault line selection
variational mode decomposition
作者简介
李小敏,硕士,讲师,主要研究方向为智能控制、智能化技术及应用。E-mail:576033042@qq.com