Development of a new on-line monitoring device for distribution network lines

被引：0

作者：

Tan W. ^{[1
]}

Zhang W. ^{[2
]}

Quan L. ^{[3
]}

Chen Y. ^{[1
]}

Song G. ^{[2
]}

Zhang M. ^{[1
]}

机构：

[1] Zhuhai XJ Electric Co., Ltd., Zhuhai

[2] School of Electrical Engineering, Xi'an Jiaotong University, Xi'an

[3] State Grid Shaanxi Electric Power Research Institute, Xi'an

来源：

Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2019年 / 47卷 / 01期

关键词：

Distribution network; Model identification; On-line monitoring; Single-phase grounding fault; Synchronous recording;

D O I：

10.7667/PSPC171867

中图分类号：

学科分类号：

摘要：

In order to solve the problem that the traditional fault indicator in distribution network can't distinguish and locate the single-phase grounding fault in small current system, a model identification method based on transient zero sequence network is introduced, and a new on-line monitoring device for distribution network is developed. The three-phase probes obtain energy from the line to provide power for their own use through its self power module, use Roche coil to acquire the circuit, and measure voltage by the non-contact sensors, and realize the recording of fault waveform through distributed synchronous recording method based on short distance wireless communication. The communication terminal summarizes the fault waveforms and makes zero sequence vector synthesis. It automatically completes the identification and alarm instruction for single-phase grounding fault, and provides a new solution to solve the problem of the single-phase grounding fault location and improve the coverage rate of distribution network automation. The field experiment results show the practicability of the device and the accuracy of the detection and location of the single phase grounding fault in small current system. © 2019, Power System Protection and Control Press. All right reserved.

引用

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页码：158 / 165

页数：7

共 20 条

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