输变电装备技术全国重点实验室(重庆大学),重庆市 400044
李再男(1996—),男,博士,助理研究员,主要研究方向:MMC直流输电系统故障穿越控制和恢复、故障重合闸等。E-mail:lizainan@cqu.edu.cn
贺梓晟(2003—),男,博士研究生,主要研究方向:电力系统保护与控制。E-mail:lizainan@cqu.edu.cn
郭珊杉(2001—),男,硕士研究生,主要研究方向:双有源桥故障、电力电子变压器等。E-mail:lizainan@cqu.edu.cn
王强钢(1987—),男,通信作者,教授,博士生导师,主要研究方向:电力系统保护与控制、电能质量、新能源发电运行与控制。E-mail:qianggang1987@cqu.edu.cn
收稿:2025-07-11,
修回:2026-01-01,
网络首发:2026-03-23,
纸质出版:2026-10-25
移动端阅览
李再男,贺梓晟,郭珊杉等.基于暂态电流拟合曲线斜率的MMC-HVDC系统断线保护[J].电力系统自动化,2026,50(20):147-155.
LI Zainan,HE Zicheng,GUO Shanshan,et al.Line-break Protection for MMC-HVDC Systems Based on Transient Current Fitting Curve Slope[J].Automation of Electric Power Systems,2026,50(20):147-155.
李再男,贺梓晟,郭珊杉等.基于暂态电流拟合曲线斜率的MMC-HVDC系统断线保护[J].电力系统自动化,2026,50(20):147-155. DOI: 10.7500/AEPS20250711006.
LI Zainan,HE Zicheng,GUO Shanshan,et al.Line-break Protection for MMC-HVDC Systems Based on Transient Current Fitting Curve Slope[J].Automation of Electric Power Systems,2026,50(20):147-155. DOI: 10.7500/AEPS20250711006.
基于模块化多电平换流器(MMC)的高压直流(HVDC)输电(MMC-HVDC)系统直流侧线路发生断线故障后,故障极的直流电压存在失稳风险,需要快速辨识断线区段以配合MMC切换控制维持电压稳定,但现有HVDC输电线路断线保护不够完善。为此,文中提出了一种基于暂态电流拟合曲线斜率的MMC-HVDC断线保护新原理。首先,理论分析了HVDC输电线路断线后的电气量变化特征。其次,通过拟合分析暂态电流的变化趋势,利用拟合曲线的极值点分布特性,提出了基于拟合曲线斜率的断线故障判据。进一步,通过比较振荡电流的直流分量是否逼近零电位来可靠辨识区内外故障。最后,在PSCAD中搭建了真双极系统并仿真验证所提断线保护的性能。仿真结果表明,所提保护原理简单,可快速准确地确定故障断线区段,具有良好的抗噪性能。
After a line-break fault occurs on the DC-side line of a high-voltage direct current (HVDC) transmission system based on modular multilevel converters (MMCs)
the DC voltage of the faulty pole faces the risk of instability. Rapid identification of the line-break section is required to coordinate the MMC switching control for voltage stability. However
the existing line-break protection for HVDC transmission lines is insufficient. Therefore
this paper proposes a new line-break protection principle based on the slopes of the transient current fitting curve. Firstly
the variation characteristics of electrical quantities after HVDC line-break are theoretically analyzed. Secondly
by fitting and analyzing the variation trend of transient current
a line-break fault criterion based on the slopes of the fitting curve is proposed using the distribution characteristics of extreme points on the fitting curve. Furthermore
internal and external faults can be reliably identified by judging whether the DC component of oscillating current approaches zero. Finally
a true bipolar system is built in PSCAD to simulate and verify the performance of the proposed line-break protection. Simulation results show that the proposed protection principle is simple
can be used to quickly and accurately locate the line-break fault section
and exhibits favorable anti-noise performance.
李再男 , 贾科 , 刘子奕 , 等 . 半桥型MMC直流侧故障恢复过程过流机理及抑制方法 [J]. 电力系统自动化 , 2023 , 47 ( 23 ): 180 - 188 .
Li Zainan , Jia Ke , Liu Ziyi , et al . Overcurrent mechanism and suppression method for DC-side fault recovery process of half-bridge modular multilevel converter [J]. Automation of Electric Power Systems , 2023 , 47 ( 23 ): 180 - 188 .
裘鹏 , 宣晓华 , 陆翌 , 等 . 舟山柔性直流工程混合式直流断路器短路试验方案设计及现场实践 [J]. 高电压技术 , 2021 , 47 ( 4 ): 1428 - 1435 .
Qiu Peng , Xuan Xiaohua , Lu Yi , et al . Design and application of short circuit test scheme for hybrid DC circuit breakers in Zhoushan VSC-HVDC transmission project [J]. High Voltage Engineering , 2021 , 47 ( 4 ): 1428 - 1435 .
Li Z , Jia K , Bi T , et al . ACLC control in half-bridge MMC for DC Fault [J]. IEEE Transactions on Industrial Electronic , 2025 , 72 ( 1 ): 516 - 524 .
章浅诺 , 张哲任 , 金砚秋 , 等 . 适用于超大规模海上风电并网的直流送出系统 [J]. 电力自动化设备 , 2025 , 45 ( 1 ): 106 - 114 .
Zhang Qiannuo , Zhang Zheren , Jin Yanqiu , et al . DC transmission system suitable for ultra-large-scale offshore wind power grid connection [J]. Electric Power Automation Equipment , 2025 , 45 ( 1 ): 106 - 114 .
武文强 , 贾科 , 陈金锋 , 等 . 基于谐波注入信息传递的海上风电柔性直流并网故障穿越方法 [J]. 电力系统自动化 , 2021 , 45 ( 21 ): 112 - 119 .
Wu Wenqiang , Jia Ke , Chen Jinfeng , et al . Fault ride-through method based on information transmission by harmonic injection for flexible DC integration of offshore wind power [J]. Automation of Electric Power Systems , 2021 , 45 ( 21 ): 112 - 119 .
杨赛昭 , 向往 , 文劲宇 . 架空柔性直流电网线路故障保护综述 [J]. 中国电机工程学报 , 2019 , 39 ( 22 ): 6600 - 6617 .
Yang Saizhao , Xiang Wang , Wen Jinyu . Review of DC fault protection methods for the MMC based DC grid [J]. Proceedings of the CSEE , 2019 , 39 ( 22 ): 6600 - 6617 .
王渝红 , 傅云涛 , 曾琦 , 等 . 柔性直流电网故障保护关键技术研究综述 [J]. 高电压技术 , 2019 , 45 ( 8 ): 2362 - 2374 .
Wang Yuhong , Fu Yuntao , Zeng Qi , et al . Review on key techniques for fault protection of flexible DC grids [J]. High Voltage Engineering , 2019 , 45 ( 8 ): 2362 - 2374 .
马秀达 , 卢宇 , 詹长江 , 等 . 海上风电多端柔性直流输电系统及直流故障处理方案 [J]. 电力系统自动化 , 2025 , 49 ( 17 ): 81 - 89 .
Ma Xiuda , Lu Yu , Zhan Changjiang , et al . Analysis on characteristic of DC network line breakage fault and a control-based protection strategy [J]. Automation of Electric Power Systems , 2025 , 49 ( 17 ): 81 - 89 .
陈淼 , 贾科 , 姚昆鹏 , 等 . 基于故障前行波极值时间的柔性直流线路单端量保护方法 [J]. 中国电机工程学报 , 2023 , 43 ( 10 ): 3742 - 3758 .
Chen Miao , Jia Ke , Yao Kunpeng , et al . Single-ended protection method of flexible DC line based on extremum time of fault forward traveling wave [J]. Proceedings of the CSEE , 2022 , 43 ( 10 ): 3742 - 3758 .
陈少宇 , 黄文焘 , 邰能灵 , 等 . 基于单端暂态电压的含限流电抗器直流配电网保护方法 [J]. 电力系统自动化 , 2021 , 45 ( 8 ): 185 - 193 .
Chen Shaoyu , Huang Wenxi , Tai Nengling , et al . Protection method based on single terminal transient voltage for DC distribution network with current limiting reactor [J]. Automation of Electric Power Systems , 2021 , 45 ( 8 ): 185 - 193 .
Li Zainan , Duan Jiandon , Lu Wenchao , et al . A fast pilot protection for DC distribution networks considering the whole fault process [J]. IEEE Transactions on Power Delivery , 2021 , 37 ( 4 ): 3121 - 3132 .
Li Chenyu , Aniruddha M G , Zhao Chengyong . A fast DC fault detection method using DC reactor voltages in HVDC grids [J]. IEEE Transactions on Power Delivery , 2018 , 33 ( 5 ): 2254 - 2264 .
Jia Ke , Wang Congbo , Bi Tianshu , et al . Transient current waveform similarity based protection for flexible DC distribution system [J]. IEEE Transactions on Industrial Electronics , 2019 , 66 ( 12 ): 9301 - 9311 .
陈淼 , 贾科 , 陈聪 , 等 . 基于高频阻抗曲线匹配的混合直流输电线路纵联保护 [J]. 电力系统自动化 , 2021 , 45 ( 12 ): 119 - 125 .
Chen Miao , Jia Ke , Chen Cong , et al . Pilot protection for hybrid DC transmission line based on high-frequency impedance curve matching [J]. Automation of Electric Power Systems , 2021 , 45 ( 12 ): 119 - 125 .
高飘 , 郑晓冬 , 晁晨栩 , 等 . 基于控制特征量响应的多端柔性直流输电线路保护 [J]. 电力系统自动化 , 2022 , 46 ( 5 ): 122 - 136 .
Gao Piao , Zheng Xiaodong , Chao Chenxu , et al . Protection for multi-terminal flexible DC transmission lines based on response of control characteristics [J]. Automation of Electric Power Systems , 2021 , 46 ( 5 ): 122 - 136 .
李再男 , 段建东 , 路文超 , 等 . 柔性中压直流配电网线路加速纵联保护 [J]. 电力系统自动化 , 2021 , 45 ( 9 ): 80 - 88 .
Li Zainan , Duan Jiandong , Lu Wenchao , et al . Accelerated line pilot protection of flexible MVDC distribution network [J]. Automation of Electric Power Systems , 2021 , 45 ( 9 ): 80 - 88 .
束洪春 , 代月 , 安娜 , 等 . 基于线性回归的柔性直流电网纵联保护方法 [J]. 电工技术学报 , 2022 , 37 ( 13 ): 3213 - 3226 .
Shun Hongchun , Dai Yue , An Na , et al . Pilot protection method of flexible DC grid based on linear regression [J]. Transactions of China Electrotechnical Society , 2022 , 37 ( 13 ): 3213 - 3226 .
行登江 , 吴金龙 , 王先为 , 等 . MMC-HVDC系统直流断线故障特性分析 [J]. 电网技术 , 2015 , 39 ( 7 ): 1825 - 1832 .
Xing Dengjiang , Wu Jinlong , Wang Xianwei , et al . Analysis on characteristic of DC transmission line breakage fault in modular multilevel converter based HVDC transmission system [J]. Power System Technology , 2015 , 39 ( 7 ): 1825 - 1832 .
Hu Jiabing , Xu Kecheng , Lin Lei , et al . Analysis and enhanced control of hybrid-MMC-based HVDC systems during asymmetrical DC voltage faults [J]. IEEE Transactions on Power Delivery , 2016 , 32 ( 3 ): 1394 - 1403 .
戴志辉 , 陈思琦 , 李毅然 , 等 . 复杂环状柔性直流配电网单极断线故障特性分析 [J]. 电工技术学报 , 2022 , 37 ( 5 ): 1229 - 1241 .
Dai Zhihui , Chen Siqi , Li Yiran , et al . Characteristic analysis of single-pole breakage fault in complex ring flexible DC distribution systems [J]. Transactions of China Electrotechnical Society , 2020 , 37 ( 5 ): 1229 - 1241 .
宁连营 , 邰能灵 , 郑晓冬 , 等 . 基于单端暂态电流的MMC-HVDC输电线路保护方案研究 [J]. 中国电机工程学报 , 2017 , 37 ( 17 ): 5010 - 5017 .
Ning Lianying , Tai Nengling , Zheng Xiaodong , et al . Research on MMC-HVDC transmission line protection scheme based on one terminal transient current [J]. Proceedings of the CSEE , 2017 , 37 ( 17 ): 5010 - 5017 .
沈毅 , 黄琛 , 赵振廷 , 等 . 兼顾短路与断线故障识别的柔性直流电网行波保护方案 [J]. 电力系统保护与控制 , 2024 , 52 ( 22 ): 143 - 155 .
Shen Yi , Huang Chen , Zhao Zhenting , et al . A traveling wave protection scheme for flexible DC power grids considering both short-circuit and breakage fault identification [J]. Power System Protection and Control , 2024 , 52 ( 22 ): 143 - 155 .
贾科 , 冯涛 , 赵其娟 , 等 . 基于单端暂态电流和差比的柔性直流配电系统断线保护 [J]. 电力系统自动化 , 2019 , 43 ( 8 ): 150 - 157 .
Jia Ke , Feng Tao , Zhao Qijuan , et al . Line breakage fault protection based ratio between sum and difference of single-ended transient current for flexible DC distribution systems [J]. Automation of Electric Power Systems , 2019 , 43 ( 8 ): 150 - 157 .
Jia Ke , Feng Tao , Wang Congbo , et al . Current ratio based breakage protection for flexible DC distribution systems [J]. IEEE Transactions on Power Delivery , 2020 , 35 ( 5 ): 2300 - 2309 .
郑宗生 , 张巍 , 廖建权 , 等 . 基于改进极模变换的柔性直流输电系统断线故障分析与辨识 [J]. 电力系统自动化 , 2024 , 48 ( 5 ): 137 - 145 .
Zheng Zongsheng , Zhang Wei , Liao Jianquan , et al . Analysis and identification of disconnection faults in flexible DC transmission systems based on an improved polar-mode transformation [J]. Automation of Electric Power Systems , 2024 , 48 ( 5 ): 137 - 145 .
滕予非 , 李小鹏 , 陈福锋 , 等 . 高压直流接地极线路断线故障高频阻抗特性及阻抗监视系统适应性 [J]. 电力自动化设备 , 2019 , 39 ( 9 ): 61 - 66 .
Teng Yufei , Li Xiaopeng , Chen Fufeng , et al . High frequency impedance characteristics of HVDC grounding electrode line under breakage fault and adaptability of impedance monitoring system [J]. Electric Power Automation Equipment , 2019 , 39 ( 9 ): 61 - 66 .
王俊生 , 蒲莹 , 张建锋 . 高压直流输电保护定值整定依据及配合关系探讨 [J]. 电力系统自动化 , 2024 , 48 ( 17 ): 181 - 189 .
Wang Junsheng , Pu Ying , Zhang Jianfeng . Discussion on basis and coordination relationships of settings for high voltage direct current transmission protection [J]. Automation of Electric Power Systems , 2024 , 48 ( 17 ): 181 - 189 .
杨帆 , 宿磊 , 杨志淳 , 等 . 基于改进CEEMDAN分解与时空特征的低压供电线路串联故障电弧检测 [J]. 电力系统保护与控制 , 2022 , 50 ( 12 ): 72 - 81 .
Yang Fan , Su Lei , Yang Zhichun , et al . Series fault arc detection in low voltage power supply line based on improved CEEMDAN decomposition and spatial-temporal features [J]. Power System Protection and Control , 2022 , 50 ( 12 ): 72 - 81 .
刘友波 , 吴浩 , 刘挺坚 , 等 . 集成经验模态分解与深度学习的用户侧净负荷预测算法 [J]. 电力系统自动化 , 2021 , 45 ( 24 ): 57 - 64 .
Liu Youbo , Wu Hao , Liu Tingjian , et al . User-side net load forecasting method integrating empirical mode decomposition and deep learning [J]. Automation of Electric Power Systems , 2021 , 45 ( 24 ): 57 - 64 .
仲伟 , 王仲 , 陶保震 , 等 . 新一代自主可控保护装置软硬件平台技术 [J]. 电力系统保护与控制 , 2022 , 50 ( 6 ): 135 - 140 .
Zhong Wei , Wang Zhong , Tao Baozheng , et al . Software and hardware platform technology of an independent controllable relay protection device [J]. Power System Protection and Control , 2022 , 50 ( 6 ): 135 - 140 .
董昊林 , 郭春义 . 规模化新能源直流汇集外送系统的暂态过电压抑制:基于DC/DC有功电流调控的盈余功率分布调节方法 [J]. 电网技术 , 2026 , 50 ( 2 ): 457 - 467 .
Dong haolin , Guo Chunyi . Transient overvoltage suppression in utility-scale renewable energy DC collection-delivery system: active current regulation strategyfor power surplus distribution control [J]. Power System Technology , 2026 , 50 ( 2 ): 457 - 467 .
0
浏览量
0
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构
京公网安备11010802024621