计及负序电流注入策略的双端弱馈交流系统纵联保护研究

杨文韬; 侯俊杰; 樊艳芳; 宋国兵; 吴小芳; 李岩

doi:10.19912/j.0254-0096.tynxb.2024-2145

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (4) : 46-60. DOI: 10.19912/j.0254-0096.tynxb.2024-2145

计及负序电流注入策略的双端弱馈交流系统纵联保护研究

杨文韬¹, 侯俊杰¹, 樊艳芳¹, 宋国兵^1,2, 吴小芳³, 李岩⁴

作者信息 +

RESEARCH ON PILOT PROTECTION OF TWO TERMINAL WEAK FEED AC SYSTEM CONSIDERING NEGATIVE SEQUENCE CURRENT INJECTION STRATEGY

Yang Wentao¹, Hou Junjie¹, Fan Yanfang¹, Song Guobing^1,2, Wu Xiaofang³, Li Yan⁴

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文章历史 +

摘要

针对传统负序纵联方向保护受换流器控制策略影响可能产生拒动、误动问题,提出一种利用模块化多电平换流器（MMC）注入负序电流下基于负序阻抗差异特征的双端弱馈交流系统纵联保护。首先,研究不对称故障下系统两侧负序电流抑制策略对传统负序纵联方向保护的影响。其次,考虑多种因素引入抑制有功功率波动的负序电流注入策略,在此基础上分析负序阻抗特征在区内外故障下的差异性。最后,引入去波动趋势方法通过计算两端波动函数并传递逻辑量构造双端弱馈交流系统纵联保护方案。仿真结果表明,所提纵联保护方案在过渡电阻为300 Ω和20 dB噪声干扰下均能可靠动作。

Abstract

Aiming at the problem that traditional negative-sequence pilot directional protection may fail to operate or maloperate due to the influence of converter control strategies, this paper proposes a pilot protection scheme for double-ended weak AC systems based on negative-sequence impedance difference characteristics under negative-sequence current injection by Modular Multilevel Converters （MMC）. Firstly, the impact of negative-sequence current suppression strategies on both sides of the system under asymmetrical faults on traditional negative-sequence pilot directional protection is investigated. Secondly, considering multiple factors, a negative-sequence current injection strategy that suppresses active power fluctuations is introduced. On this basis, the differences in negative-sequence impedance characteristics under internal and external faults are analyzed. Finally, a detrended fluctuation analysis method is introduced to calculate the fluctuation functions at both ends and transmit logic quantities, thereby constructing a pilot protection scheme for double-ended weak AC systems. Simulation results show that the proposed pilot protection scheme can operate reliably under a transition resistance of 300 Ω and with 20 dB noise interference.

导出引用

杨文韬, 侯俊杰, 樊艳芳, 宋国兵, 吴小芳, 李岩. 计及负序电流注入策略的双端弱馈交流系统纵联保护研究[J]. 太阳能学报. 2026, 47(4): 46-60 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2145

Yang Wentao, Hou Junjie, Fan Yanfang, Song Guobing, Wu Xiaofang, Li Yan. RESEARCH ON PILOT PROTECTION OF TWO TERMINAL WEAK FEED AC SYSTEM CONSIDERING NEGATIVE SEQUENCE CURRENT INJECTION STRATEGY[J]. Acta Energiae Solaris Sinica. 2026, 47(4): 46-60 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2145

中图分类号： TM773

参考文献

[1] 丁明, 王伟胜, 王秀丽, 等. 大规模光伏发电对电力系统影响综述[J]. 中国电机工程学报, 2014, 34(1): 1-14.
DING M, WANG W S, WANG X L, et al.A review on the effect of large-scale PV generation on power systems[J]. Proceedings of the CSEE, 2014, 34(1): 1-14.
[2] 邹常跃, 韦嵘晖, 冯俊杰, 等. 柔性直流输电发展现状及应用前景[J]. 南方电网技术, 2022, 16(3): 1-7.
ZOU C Y, WEI R H, FENG J J, et al.Development status and application prospect of VSC-HVDC[J]. Southern power system technology, 2022, 16(3): 1-7.
[3] 李岩, 罗雨, 许树楷, 等. 柔性直流输电技术: 应用、进步与期望[J]. 南方电网技术, 2015, 9(1): 7-13.
LI Y, LUO Y, XU S K, et al.VSC-HVDC transmission technology: application, advancement and expectation[J]. Southern power system technology, 2015, 9(1): 7-13.
[4] 冯俊杰, 辛清明, 赵晓斌, 等. 大规模新能源超远距离送出的柔性直流系统集成设计方案[J]. 南方电网技术, 2024, 18(3): 34-44.
FENG J J, XIN Q M, ZHAO X B, et al.Integrated design scheme of VSC-HVDC system for large-scale renewable energy ultra-long-distance transmission[J]. Southern power system technology, 2024, 18(3): 34-44.
[5] 马文忠, 王昊, 王玉生, 等. 子模块混合型MMC直流输电系统的优化设计及其直流故障穿越策略[J]. 太阳能学报, 2024, 45(9): 80-90.
MA W Z, WANG H, WANG Y S, et al.Optimization design and DC fault traversal strategy of submodule hybrid MMC DC transmission system[J]. Acta energiae solaris sinica, 2024, 45(9): 80-90.
[6] HOU J J, SONG G B, XU R D, et al.Fault property discrimination scheme in hybrid MTDC power system based on the amplitude distribution of injection signal[J]. International journal of electrical power & energy systems, 2022, 138: 107930.
[7] 高淑萍, 蔚坤, 宋国兵, 等. 适用于双馈风电场送出线的纵联方向保护研究[J]. 太阳能学报, 2024, 45(1): 218-225.
GAO S P, YU K, SONG G B, et al.Research on pilot direction protection suitable for doubly-fed wind farm outgoing line[J]. Acta energiae solaris sinica, 2024, 45(1): 218-225.
[8] 宋国兵, 陶然, 李斌, 等. 含大规模电力电子装备的电力系统故障分析与保护综述[J]. 电力系统自动化, 2017, 41(12): 2-12.
SONG G B, TAO R, LI B, et al.Survey of fault analysis and protection for power system with large scale power electronic equipments[J]. Automation of electric power systems, 2017, 41(12): 2-12.
[9] 郑涛, 康恒. 基于控保协同的柔性低频输电系统电流差动保护性能提升方案[J]. 电工技术学报, 2025, 40(7): 2162-2177.
ZHENG T, KANG H.Improvement of current differential protection performance of flexible low-frequency transmission system based on control and protection cooperation[J]. Transactions of China Electrotechnical Society, 2025, 40(7): 2162-2177.
[10] 郑涛, 庄心怡, 吕文轩. 海上风电柔直换流站负序电流参考值选取及保护适应性分析[J]. 电力系统自动化, 2023, 47(3): 133-141.
ZHENG T, ZHUANG X Y, LYU W X.Negative sequence current reference selection and protection adaptability analysis of flexible DC converter station for offshore wind power[J]. Automation of electric power systems, 2023, 47(3): 133-141.
[11] 廖一丁, 夏向阳, 刘俊翔, 等. 电网不对称故障下光伏并网逆变器的无功支撑控制策略[J]. 太阳能学报, 2024, 45(9): 326-333.
LIAO Y D, XIA X Y, LIU J X, et al.Reactive power support control strategy for PV grid-connected inverters under asymmetric grid faults[J]. Acta energiae solaris sinica, 2024, 45(9): 326-333.
[12] 夏天, 夏向阳, 刘代飞, 等. 柔性直流系统的交流侧故障穿越优化控制策略[J]. 电气工程学报, 2021, 16(4): 196-204.
XIA T, XIA X Y, LIU D F, et al.AC-side fault crossing optimization control strategy for VSC-HVDC[J]. Journal of electrical engineering, 2021, 16(4): 196-204.
[13] 梁营玉, 卢正杰, 李武林, 等. 负序方向元件适应性分析及与MMC-HVDC控制策略协同配合方法[J]. 电网技术, 2019, 43(8): 2998-3006.
LIANG Y Y, LU Z J, LI W L, et al.Adaptability analysis of negative sequence directional element and cooperative method with control strategy of MMC-HVDC[J]. Power system technology, 2019, 43(8): 2998-3006.
[14] 郑黎明, 贾科, 毕天姝, 等. 海上风电接入柔直系统交流侧故障特征及对保护的影响分析[J]. 电力系统保护与控制, 2021, 49(20): 20-32.
ZHENG L M, JIA K, BI T S, et al.AC-side fault analysis of a VSC-HVDC transmission system connected to offshore wind farms and the impact on protection[J]. Power system protection and control, 2021, 49(20): 20-32.
[15] 黎钊, 吴宇奇, 郑宇超, 等. 基于控保结合的适配孤岛场景单相接地故障的新型距离保护方案[J]. 中国电机工程学报, 2023, 43(24): 9509-9523.
LI Z, WU Y Q, ZHENG Y C, et al.A novel distance protection scheme for island grid based on control combined with protection under single-phase ground fault[J]. Proceedings of the CSEE, 2023, 43(24): 9509-9523.
[16] 季亮, 俞紫琳, 李博通, 等. 基于提升距离保护适应性的改进VSG控制策略研究[J]. 智慧电力, 2024, 52(6): 9-15, 70.
JI L, YU Z L, LI B T, et al.Improved VSG control strategy to enhance the adaptability of distance protection[J]. Smart power, 2024, 52(6): 9-15, 70.
[17] 孔令国, 蔡国伟. 大规模并网光伏电站的逆变器控制方法研究[J]. 电力系统保护与控制, 2013, 41(22): 57-63.
KONG L G, CAI G W.Research on control method of inverters for large-scale grid-connected photovoltaic power system[J]. Power system protection and control, 2013, 41(22): 57-63.
[18] WANG F, DUARTE J L, HENDRIX M A M. Pliant active and reactive power control for grid-interactive converters under unbalanced voltage dips[J]. IEEE transactions on power electronics, 2011, 26(5): 1511-1521.
[19] 贾科, 顾晨杰, 毕天姝, 等. 大型光伏电站汇集系统的故障特性及其线路保护[J]. 电工技术学报, 2017, 32(9): 189-198.
JIA K, GU C J, BI T S, et al.Fault characteristics and line protection within the collection system of a large-scale photovoltaic power plant[J]. Transactions of China Electrotechnical Society, 2017, 32(9): 189-198.
[20] 梁营玉, 杨奇逊, 刘建政, 等. 电网电压不平衡时MMC-HVDC的无差拍直接功率控制[J]. 电工技术学报, 2015, 30(15): 15-25.
LIANG Y Y, YANG Q X, LIU J Z, et al.Deadbeat direct power control for MMC-HVDC under unbalanced grid voltages[J]. Transactions of China Electrotechnical Society, 2015, 30(15): 15-25.
[21] 宋伟男. 低频输电系统控制方法及保护适应性分析研究[D]. 北京: 华北电力大学, 2023.
SONG W N.Research on control method and protection adaptability of low frequency AC transmission system[D]. Beijing: North China Electric Power University, 2023.
[22] SHI L, ADAM G P, LI R, et al.Control of offshore MMC during asymmetric offshore AC faults for wind power transmission[J]. IEEE journal of emerging and selected topics in power electronics, 2020, 8(2): 1074-1083.
[23] 彭放, 高厚磊, 郭一飞, 等. 构网逆变电源故障穿越控制策略及其对保护影响的研究综述[J]. 电网技术, 2024, 48(9): 3673-3685.
PENG F, GAO H L, GUO Y F, et al.A review of fault ride-through control strategies of grid-forming inverter-based resources and the influence on protection[J]. Power system technology, 2024, 48(9): 3673-3685.
[24] 吴林平, 王小红, 闫冬, 等. 计及继电保护需求的柔直换流器故障分量阻抗重构控制策略[J]. 电力系统自动化, 2023, 47(22): 110-119.
WU L P, WANG X H, YAN D, et al.Control strategy for fault component impedance reconstruction of flexible DC converter considering relay protection requirement[J]. Automation of electric power systems, 2023, 47(22): 110-119.
[25] 宋国兵, 常鹏, 侯俊杰, 等. 故障分量方向元件在交直流多端馈入系统中的适应性分析[J]. 电力系统自动化, 2021, 45(9): 136-145.
SONG G B, CHANG P, HOU J J, et al.Adaptability analysis of fault component directional component in AC/DC multi-terminal infeed system[J]. Automation of electric power systems, 2021, 45(9): 136-145.
[26] 黄涛, 陆于平, 蔡超. DFIG等效序突变量阻抗相角特征对故障分量方向元件的影响分析[J]. 中国电机工程学报, 2016, 36(14): 3929-3939.
HUANG T, LU Y P, CAI C.Analysis of phase angle characteristics of DFIG equivalent sequence superimposed impedances and its impact on fault components based direction relay[J]. Proceedings of the CSEE, 2016, 36(14): 3929-3939.