| 引用本文: | 李 清,周 强,张东辉,毛炽祖.基于测试信号法的HVDC谐波阻抗扫描方法研究[J].电力系统保护与控制,2021,49(14):168-175.[点击复制] |
| LI Qing,ZHOU Qiang,ZHANG Donghui,MAO Chizu.high voltage direct current; harmonic impedance scanning; test signal method; amplitude of harmonic source; initial phase of harmonic source[J].Power System Protection and Control,2021,49(14):168-175[点击复制] |
|
| 摘要: |
| 南方电网公司科技项目资助(CGYKJXM20180485)；四川省科技计划项目资助(2019YJ0631) |
| 关键词: 高压直流输电 谐波阻抗扫描 测试信号法 谐波源幅值 谐波源初相位 |
| DOI：DOI: 10.19783/j.cnki.pspc.201176 |
| 投稿时间：2020-09-24修订日期：2020-11-20 |
| 基金项目:南方电网公司科技项目资助(CGYKJXM20180485)；四川省科技计划项目资助(2019YJ0631) |
|
| high voltage direct current; harmonic impedance scanning; test signal method; amplitude of harmonic source; initial phase of harmonic source |
| LI Qing1,ZHOU Qiang2,ZHANG Donghui2,MAO Chizu1 |
| (1. EHV Maintenance & Test Center, China Southern Power Grid Company Limited, Guangzhou 510670, China;
2. Sichuan Energy Internet Research Institute, Tsinghua University, Chengdu 610200, China) |
| Abstract: |
| Harmonic impedance scanning is an important means of harmonic resonance analysis and AC or DC filter design in HVDC. In this paper, the circuit superposition theorem is used to explain the test signal method which is suitable for HVDC harmonic impedance scanning. Based on the basic principle of the test signal method and how it has progressed in HVDC application research, a method of selecting harmonic source amplitude and an improved scanning method for reducing the influence of the initial phase of the harmonic source are proposed. Finally, taking the CIGRE first benchmark model as an example, the influence of harmonic source amplitude and initial phase on harmonic impedance scanning is quantitatively and qualitatively analyzed on a PSCAD/EMTDC simulation platform to verify that the proposed method can be used to further improve the reliability of harmonic impedance scanning results of HVDC, and provide a reference for actual HVDC project design.
This work is supported by the Science and Technology Project of China Southern Power Grid (No. CGYKJXM20180485) and Sichuan Science and Technology Plan (No. 2019YJ0631). |
| Key words: high voltage direct current harmonic impedance scanning test signal method amplitude of harmonic source initial phase of harmonic source |
