昆柳龙直流工程受端高频谐振评估及抑制

doi:10.11930/j.issn.1004-9649.202103129

中国电力 ›› 2022, Vol. 55 ›› Issue (3): 9-17.DOI: 10.11930/j.issn.1004-9649.202103129

昆柳龙直流工程受端高频谐振评估及抑制

徐攀腾¹, 朱博¹, 喻文翔², 宋述波¹, 杨学广¹, 樊友平²

1. 中国南方电网有限责任公司超高压输电公司广州局，广东广州 510500;
2. 武汉大学电气与自动化学院，湖北武汉 430072

收稿日期:2021-03-22 修回日期:2021-09-05 出版日期:2022-03-28 发布日期:2022-03-29
作者简介:徐攀腾(1981—)，男，硕士，高级工程师，从事特高压直流输电/柔性直流输电系统研究及运行维护工作，E-mail：xupanteng1@163.com;喻文翔(1999—)，男，通信作者，硕士研究生，从事多端柔性直流输电系统稳定运行分析及风险辨识等研究，E-mail：1353011792@qq.com
基金资助:
国家重点研发计划资助项目(2016YFB0900903)

High-Frequency Resonance Evaluation and Suppression Measures for Receiving-End of Kun-Liu-Long DC Project

XU Panteng¹, ZHU Bo¹, YU Wenxiang², SONG Shubo¹, YANG Xueguang¹, FAN Youping²

1. Guangzhou Bureau of China Southern Power Grid Co., Ltd. EHV Transmission Company, Guangzhou 510500, China;
2. School of Electrical and Automation, Wuhan University, Wuhan 430072, China

Received:2021-03-22 Revised:2021-09-05 Online:2022-03-28 Published:2022-03-29
Supported by:
This work is supported by National Key R&D Program of China (No.2016YFB0900903)

摘要/Abstract

摘要： 电压源型换流器易在高频谐波频段呈现负阻尼从而引起谐振现象，昆柳龙直流工程作为特高压多端混合直流输电工程，需对其柔性直流受端柳州、龙门换流站的高频谐波谐振风险进行评估分析。基于阻抗分析法分析柔性直流换流站控制链路延时、前馈滤波、控制器参数对柔性直流交流阻抗变化趋势的影响，分别考虑22种、34种交流线路工况，对受端柳州站和龙门站的多种运行工况进行交流系统谐波阻抗扫描计算，由结果可知龙门站相较柳州站具有更高的高频谐波谐振风险，为避免发生谐振，龙门站应在前馈中加入100 Hz低通滤波器，控制链路延时为300 μs，但会影响动态响应性能。提出了相应的高频谐波谐振风险抑制方法，能够为昆柳龙直流工程的高频谐波谐振风险抑制提供参考。

关键词: 昆柳龙直流工程, 高频谐波谐振, 谐波阻抗扫描, 柔性直流, 风险抑制方法

Abstract: The voltage source converter is prone to negative damping in the high-frequency harmonic band, thus causing resonance phenomena. The Kun-Liu-Long DC project, as a UHV multi-terminal hybrid DC transmission project, needs to evaluate and analyse the high-frequency harmonic resonance risk of its flexible DC converter stations in Liuzhou and Longmen. Based on the impedance analysis method, an analysis is made of the impact of control link delay, feedforward filtering and controller parameters on the change trend of AC impedance of flexible DC converter stations. 22 and 34 AC line operating conditions are considered respectively, and the AC system harmonic impedance scanning calculation is carried out for various operating conditions of Liuzhou Station and Longmen Station at the receiving ends. To avoid resonance, a 100 Hz low-pass filter should be added to the feedforward of the gantry station, with a control link delay of 300 μs, which will affect the dynamic response performance. The corresponding high-frequency harmonic resonance risk suppression method is proposed, which can provide a reference for suppression of the high-frequency harmonic resonance risk of the Kun-liu-long DC project.

Key words: Kun-Liu-Long DC project, high frequency harmonic resonance, harmonic impedance scanning, flexible DC, risk suppression method

徐攀腾, 朱博, 喻文翔, 宋述波, 杨学广, 樊友平. 昆柳龙直流工程受端高频谐振评估及抑制[J]. 中国电力, 2022, 55(3): 9-17.

XU Panteng, ZHU Bo, YU Wenxiang, SONG Shubo, YANG Xueguang, FAN Youping. High-Frequency Resonance Evaluation and Suppression Measures for Receiving-End of Kun-Liu-Long DC Project[J]. Electric Power, 2022, 55(3): 9-17.

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昆柳龙直流工程受端高频谐振评估及抑制

High-Frequency Resonance Evaluation and Suppression Measures for Receiving-End of Kun-Liu-Long DC Project

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昆柳龙直流工程受端高频谐振评估及抑制

High-Frequency Resonance Evaluation and Suppression Measures for Receiving-End of Kun-Liu-Long DC Project

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