考虑恢复过程中换相能力的后续换相失败抑制策略

doi:10.16183/j.cnki.jsjtu.2021.004

上海交通大学学报 ›› 2022, Vol. 56 ›› Issue (3): 333-341.doi: 10.16183/j.cnki.jsjtu.2021.004

所属专题：《上海交通大学学报》“新型电力系统与综合能源”专题（2022年1~6月）

• 新型电力系统与综合能源 • 上一篇下一篇

考虑恢复过程中换相能力的后续换相失败抑制策略

丛新棚¹, 郑晓冬¹(), 曹亚倩¹, 邰能灵¹, 缪源诚², 李珂²

1.上海交通大学电力传输与功率变换控制教育部重点实验室, 上海 200240
2.国家电网有限公司华东分部, 上海 200120

收稿日期:2021-01-06 出版日期:2022-03-28 发布日期:2022-04-01
通讯作者: 郑晓冬 E-mail:xiaodongzheng@sjtu.edu.cn
作者简介:丛新棚(1996-),男,山东省威海市人,硕士生,主要从事高压直流输电技术研究.
基金资助:
国家重点研发计划项目(2016YFB0900600);国家自然科学基金(51877135);上海市启明星计划资助项目(18QA1402100)

A Suppression Strategy for Subsequent Commutation Failures Considering Commutation Capability of Recovery Process

CONG Xinpeng¹, ZHENG Xiaodong¹(), CAO Yaqian¹, TAI Nengling¹, MIAO Yuancheng², LI Ke²

1. Key Laboratory of Control of Power Transmission and Conversion of the Minstery of Education, Shanghai Jiao Tong University, Shanghai 200240, China
2. East China Branch of State Grid Corporation of China, Shanghai 200120, China

Received:2021-01-06 Online:2022-03-28 Published:2022-04-01
Contact: ZHENG Xiaodong E-mail:xiaodongzheng@sjtu.edu.cn

摘要/Abstract

摘要：

为抑制高压直流后续换相失败,研究系统恢复时电气量与控制量的动态响应,提出引起后续换相失败的主要原因是恢复过程中,故障后换流母线电压处于跌落状态,逆变侧实际触发角存在超调现象,直流电流持续上升,三者共同作用导致系统换相能力不足,无法完成换相过程中阀臂电感能量的转移.为此,提出一种考虑系统恢复过程换相能力的后续换相失败抑制策略,通过限制触发角超调时的直流电流,增大系统换相能力,抑制后续换相失败,以实现直流系统的有效恢复,并在仿真软件PSCAD/EMTDC中利用高压直流标准模型CIGRE Benchmark对所提理论进行了测试与验证.

关键词: 高压直流, 后续换相失败, 恢复过程, 换相能力

Abstract:

In order to suppress subsequent commutation failures of high voltage direct current (HVDC), the dynamic process of electrical and control quantities during system recovery is studied, and the main reason for subsequent commutation failures is proposed in the paper. During the recovery process, the voltage of the converter bus after the fault is in a state of drop, the actual firing angle of the inverter is in overshoot, and direct current continues to rise. These factors result in an insufficient system commutation capability to complete the transfer of valve arm inductance energy during the commutation process. A suppression strategy for subsequent commutation failure considering the commutation capability of the system recovery process is proposed. By limiting the direct current (DC) when the firing angle is in overshoot, the system commutation capability is increased, and subsequent commutation failures are suppressed. In addition, the DC system is effectively recovered. The proposed theory is tested and verified based on the HVDC CIGRE Benchmark in PSCAD/EMTDC.

Key words: high voltage direct current (HVDC), subsequent commutation failure, recovery process, commutation capability

中图分类号:

TM721

丛新棚, 郑晓冬, 曹亚倩, 邰能灵, 缪源诚, 李珂. 考虑恢复过程中换相能力的后续换相失败抑制策略[J]. 上海交通大学学报, 2022, 56(3): 333-341.

CONG Xinpeng, ZHENG Xiaodong, CAO Yaqian, TAI Nengling, MIAO Yuancheng, LI Ke. A Suppression Strategy for Subsequent Commutation Failures Considering Commutation Capability of Recovery Process[J]. Journal of Shanghai Jiao Tong University, 2022, 56(3): 333-341.

图/表 9

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故障水平/%	L_f/H	控制策略I		控制策略II		控制策略III
故障水平/%	L_f/H	单相故障	三相故障	单相故障	三相故障	单相故障	三相故障
5	3.368	0	0	0	0	0	0
10	1.684	0	0	0	0	0	0
15	1.123	0	2	0	1	0	1
20	0.842	2	2	1	1	1	1
25	0.674	2	2	1	1	1	1
30	0.561	3	2	1	1	1	1
35	0.481	3	2	1	1	1	1
40	0.421	3	2	1	1	1	1
45	0.374	3	2	1	1	1	1
50	0.337	3	2	1	1	1	1

考虑恢复过程中换相能力的后续换相失败抑制策略

A Suppression Strategy for Subsequent Commutation Failures Considering Commutation Capability of Recovery Process

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