Simulation study on a new method for measuring capacitive current in distribution lines

Bo Yi; Yizhu Liu; Peng Yang; Zhi Long; Xin Wu

doi:10.1117/12.3033440

16 October 2024 Simulation study on a new method for measuring capacitive current in distribution lines

Bo Yi, Yizhu Liu, Peng Yang, Zhi Long, Xin Wu

Author Affiliations +

Proceedings Volume 13291, Ninth International Symposium on Advances in Electrical, Electronics, and Computer Engineering (ISAEECE 2024); 1329122 (2024) https://doi.org/10.1117/12.3033440
Event: Ninth International Symposium on Advances in Electrical, Electronics, and Computer Engineering (ISAEECE 2024), 2024, Changchun, China

Abstract

The distribution network in China usually operates with ungrounded neutral points. Installing suitable arc suppression coils on distribution lines can effectively control the range of influence of single-phase grounding faults. To configure arc suppression coils with reasonable compensation capacity, accurate measurement of the distribution line is necessary. However, current capacitance current measurement methods often do not consider the impact of zero sequence voltage on the measurement results. This article proposes a new method for measuring capacitive current. Optimized the wiring method of traditional signal injection method. A line to ground capacitance analysis model considering the zero sequence voltage of the power grid was constructed. By injecting multiple sets of abnormal frequency signals into the open triangular end of the voltage transformer, the capacitance of the line to ground can be effectively measured and analyzed. The method in this article does not require measurement of the system phase angle, and the required instruments and equipment are simple and convenient for on-site operation. This new type of abnormal frequency signal injection method has guiding significance for the prevention and control of single-phase grounding faults in distribution lines.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Bo Yi, Yizhu Liu, Peng Yang, Zhi Long, and Xin Wu "Simulation study on a new method for measuring capacitive current in distribution lines", Proc. SPIE 13291, Ninth International Symposium on Advances in Electrical, Electronics, and Computer Engineering (ISAEECE 2024), 1329122 (16 October 2024); https://doi.org/10.1117/12.3033440

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