Development of Broadband Resistive–Capacitive Parallel–Connection Voltage Divider for Transient Voltage Monitoring

Shijun Xie, Zhou Mu, Weidong Ding, Zhenbo Wan, Shaochun Su, Chenmeng Zhang, Yu Zhang, Yalong Xia and Donghui Luo
Additional contact information
Shijun Xie: State Grid Sichuan Electric Power Research Institute, Chengdu 610041, China
Zhou Mu: State Grid Sichuan Electric Power Research Institute, Chengdu 610041, China
Weidong Ding: School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Zhenbo Wan: School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Shaochun Su: State Grid Sichuan Electric Power Company, Chengdu 610041, China
Chenmeng Zhang: State Grid Sichuan Electric Power Research Institute, Chengdu 610041, China
Yu Zhang: State Grid Sichuan Electric Power Research Institute, Chengdu 610041, China
Yalong Xia: State Grid Sichuan Electric Power Research Institute, Chengdu 610041, China
Donghui Luo: State Grid Sichuan Electric Power Research Institute, Chengdu 610041, China

Energies, 2022, vol. 15, issue 2, 1-14

Abstract: The on-site measurement of transient voltages is of great significance in analyzing the fault cause of power systems and optimizing the insulation coordination of power equipment. Conventional voltage transformers normally have a narrow bandwidth and are unable to accurately measure various transient voltages in power systems. In this paper, a wideband parallel resistive–capacitive voltage divider is developed, which can be used for online monitoring of transient voltages in a 220 kV power grid. The structures of the high-voltage and low-voltage arms were designed. The internal electric field distribution of the high-voltage arm was analyzed. The influence factors and improvement techniques of the upper frequency limit were studied. The parameters of the elements of the divider were determined. The voltage withstand performances and scale factors under lightning impulses and AC and DC voltages, the temperature stabilities of scale factors and the step response and bandwidth of the developed voltage divider were tested. The results show that the deviations of the scale factors under various voltage waveforms and different temperatures ranging from −20 to 40 °C are within 3%. The withstand voltage meets the relevant requirements specified in IEC60071-1-2011. The step response 10~90% rise time is approximately 29 ns, and the 3 dB bandwidth covers the range of DC to 10 MHz.

Keywords: resistive–capacitive voltage divider; transient voltage monitoring; scale factor; step response; broadband; temperature stability (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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