Field test and analysis of delay characteristics of a DC electronic voltage transformer

被引：0
|
作者：
Zhu M. [1 ,2 ,3 ]
Wang D. [3 ]
Liao Y. [1 ,2 ]
Cao P. [3 ]
Shu H. [3 ]
Yang B. [3 ]
Duan R. [1 ]
机构：
[1] Yunnan Power Grid Co., Ltd., Electric Power Research Institute, Kunming
[2] Yunnan Key Laboratory of Green Energy, Electric Power Measurement Digitalization, Control and Protection, Kunming
[3] Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2023年 / 51卷 / 03期
基金：
中国国家自然科学基金;
关键词：
absolute time delay; delay characteristic; equivalent; low-pass filter; test system; transient steady state signal;
D O I：
10.19783/j.cnki.pspc.220479
中图分类号：
学科分类号：
摘要：
Because of the influence of digital link factors such as the voltage divider, remote module parameter change and merging units, a DC electronic voltage transformer will have time delay. Thus it is difficult to accurately test and calibrate this time delay characteristic on site. First, the equivalent circuit model of a DC voltage transformer is established. Then the influence of passive components such as the DC voltage divider and low-pass filter on the delay time of the transformer is analyzed. Then a delay equivalent test method based on a transient steady state signal is proposed, and a field test system for the transient delay characteristics of the DC voltage transformer is developed. The delay time is accurately measured by the feedback time difference between the standard transient step signal and the measured DC voltage transformer. Finally, using the test scheme proposed, the time delay test is carried out on a DC project site to verify the effectiveness of the method. © 2023 Power System Protection and Control Press. All rights reserved.
引用
收藏
页码：126 / 132
页数：6
相关论文
共 23 条
  • [1] WANG Lu, LI Fengting, YIN Chunya, Et al., Analysis of asymmetric fault commutation failure in an HVDC system with DC current variation, Power System Protection and Control, 49, 1, pp. 17-23, (2021)
  • [2] RAO Hong, SONG Qiang, LIU Wenhua, Et al., Optimized design solutions for multi-terminal VSC-HVDC system using modular multilevel converters and their comparison, Automation of Electric Power Systems, 37, 15, pp. 103-108, (2013)
  • [3] HE Zhiyuan, TANG Guangfu, ZHENG Jianchao, High power electronics equipment test method and its equivalence mechanism, Proceedings of the CSEE, 26, 19, pp. 47-52, (2006)
  • [4] LIU Weidong, LI Qinan, WANG Xuan, Et al., Application status and prospect of VSC-HVDC technology for large-scale offshore wind farms, Electric Power, 53, 7, pp. 55-71, (2020)
  • [5] QIU Jin, FENG Yu, WANG Yang, Et al., Study on a step response characteristic calibration system of a UHVDC current measurement device, Power System Protection and Control, 49, 1, pp. 141-147, (2021)
  • [6] CHENG Lin, GAO Kun, YIN Shan, Et al., Electromagnetic interference of electronic transformer in GIS by VFTO, Smart Power, 49, 12, pp. 37-44, (2021)
  • [7] LI Ling, ZHANG Ye, LIANG Zhencheng, Et al., Active harmonic oscillation suppression strategy for modular multilevel converter, Guangdong Electric Power, 33, 3, pp. 34-41, (2020)
  • [8] GUO Xianshan, LU Yajun, GUO Qinglei, Design principle and verification of control and protection system for Zhangbei VSC-HVDC grid demonstration project, Journal of Global Energy Interconnection, 3, 2, pp. 181-189, (2020)
  • [9] HERTEM D V, GHANDHARI M., Multi-terminal VSC HVDC for the European supergrid obstacles, Renewable and Sustainable Energy Reviews, 14, 9, pp. 3156-3163, (2010)
  • [10] XIAO H, LI Y H, LIU R P, Et al., Single-end time-domain transient electrical signals based protection principle and its efficient setting calculation method for LCC-HVDC lines, IET Generation, Transmission & Distribution, 11, 5, pp. 1233-1242, (2016)
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