引用本文: | 张 平,杨朋威,汤汉松,等.直流电压测量装置暂态阶跃响应性能现场测试技术[J].电力系统保护与控制,2021,49(9):143-149.[点击复制] |
ZHANG Ping,YANG Pengwei,TANG Hansong,et al.Field test technology of the transient step response features of a DC voltage measuring device[J].Power System Protection and Control,2021,49(9):143-149[点击复制] |
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摘要: |
为提高特高压直流输电工程的安全性,针对目前换流站内运行的电压测量装置缺乏有效的暂态特性检测手段的问题,研究了一种适用于直流电压测量装置的暂态阶跃响应现场测试技术。分析了直流电压测量时阶跃过冲电压及响应延时的产生机理,提出了一种基于低电压分段测试的暂态阶跃响应现场测试方法。采用交直流电压叠加测试实现暂态阶跃过冲电压测试,通过二次系统暂态阶跃测试、广义多项式曲线拟合及三次样条插值实现阶跃响应延时测试。在现场搭建测试系统对直流电压测量装置进行检测,结果表明,该测试技术可满足现场暂态阶跃响应检测的需求。 |
关键词: 直流电压测量装置 暂态阶跃响应 低电压分段测试 交直流电压叠加 暂态阶跃测试 |
DOI:DOI: 10.19783/j.cnki.pspc.200805 |
投稿时间:2020-07-08修订日期:2020-09-18 |
基金项目:国家自然科学基金项目资助(51707090);国家电网公司科技项目“特高压直流控制保护系统现场测试及运维优化关键技术研究与应用”(5210EF180013) |
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Field test technology of the transient step response features of a DC voltage measuring device |
ZHANG Ping1,YANG Pengwei1,TANG Hansong2,LIU Weiming1,CHEN Xiaolu1,DU Zhichao1 |
(1. Electric Power Research Institute of State Grid East Inner Mongolia Electric Power Company Limited, Hohhot 010000,
China; 2. Jiangsu LingChuang Electric Automation Co., Ltd., Zhenjiang 212009, China) |
Abstract: |
The voltage measuring devices running in a converter station can lack the means to detect an effective transient characteristic. To improve the security of a UHVDC transmission project, this paper researches a field test technology of transient step response suitable for a DC voltage measurement device. It analyses the generation mechanism of step overshoot voltage and response delay in DC voltage measurement, and proposes a field test method of transient step response based on a low voltage subsection test. It uses AC and DC voltage superposition to realize the test for transient step overshoot voltage, realizes the step response delay test through a transient step test, generalized polynomial curve fitting and cubic spline interpolation. It builds a system to test the device on site, and the results show that the test technology can meet the needs of the field detection for transient step response.
This work is supported by the National Natural Science Foundation of China (No. 51707090) and the Science and Technology Project of State Grid Corporation of China “Key Technologies Research and Application of On-site Test and Operation and Maintenance Optimization of UHVDC Control and Protection System” (No. 5210EF180013). |
Key words: DC voltage measuring device transient step response stepwise low voltage test superposition of AC and DC voltages transient step test |