梁营玉;卢正杰;李武林;霍姚彤;许冠军;王聪;

• 1:中国矿业大学(北京)机电与信息工程学院

摘要(Abstract)：

由于MMC-HVDC较强的可控性和过流能力的限制,MMC-HVDC的接入改变了交流线路的故障特征,导致基于传统同步电源故障特征设计的负序方向元件存在适应性问题。推导了接入MMC-HVDC换流站的交流线路故障电流和负序阻抗角解析表达式,据此深入分析了不同控制目标、功率参考值、电网电压不平衡度等因素对负序方向元件动作性能的影响。为了保证负序方向元件在各种工况下均能正确判别故障方向并具有较高的灵敏度,提出一种与负序方向元件协同配合的MMC-HVDC控制策略。仿真结果验证了文中理论分析的正确性和所提控制策略的有效性。

关键词(KeyWords)： 负序方向元件;协同配合方法;模块化多电平换流器;高压直流输电;适应性分析

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51707193);; 中央高校基本科研业务费资助项目(2017QJ05)~~

作者(Author): 梁营玉;卢正杰;李武林;霍姚彤;许冠军;王聪;

Email:

DOI: 10.13335/j.1000-3673.pst.2018.2522

参考文献(References)：

• [1]Mehrasa M,Pouresmaeil E,Zabihi S,et al.Dynamic model,control and stability analysis of MMC in HVDC transmission systems[J].IEEE Transactions on Power Delivery,2017,32(3):1471-1482.
• [2]Liang Y,Liu J,Zhang T,et al.Arm current control strategy for MMC-HVDC under unbalanced conditions[J].IEEE Transactions on Power Delivery,2017,32(1):125-134.
• [3]邹常跃,陈俊,许树楷,等.长控制链路延时特征下柔性直流输电系统动态性能改善方法[J].电网技术,2017,41(10):3216-3222.Zou Changyue,Chen Jun,Xu Shukai,et al.Dynamic performance optimization of VSC-HVDC considering its long delay[J].Power System Technology,2017,41(10):3216-3222(in Chinese).
• [4]常浩,陈东,吴延坤,等.厦门柔性直流输电工程功率突变现象及优化策略[J].高电压技术,2016,42(10):3045-3050.Chang Hao,Chen Dong,Wu Yankun,et al.Analysis and optimization strategy of power disturbance on Xiamen flexible HVDC project[J].High Voltage Engineering,2016,42(10):3045-3050(in Chinese).
• [5]徐政.柔性直流输电系统[M].2版.北京:机械工业出版社,2016:457-467.
• [6]贺家李,李永丽,董新洲,等.电力系统继电保护原理[M].5版.北京:中国电力出版社,2018:163-184.
• [7]Raji?T,Stojanovi?Z.An algorithm for longitudinal differential protection of transmission lines[J].International Journal of Electrical Power&Energy Systems,2018,94:276-286.
• [8]王晨清,宋国兵,汤海雁,等.选相及方向元件在风电接入系统中的适应性分析[J].电力系统自动化,2016,40(1):89-95.Wang Chenqing,Song Guobing,Tang Haiyan,et al.Adaptability analysis of phase selectors and directional relays in power systems integrated with wind farms[J].Automation of Electric Power Systems,2016,40(1):89-95(in Chinese).
• [9]张保会,王进,原博,等.风电接入对继电保护的影响(四)--风电场送出线路保护性能分析[J].电力自动化设备,2013,33(4):1-5.Zhang Baohui,Wang Jin,Yuan Bo,et al.Impact of wind farm integration on relay protection(4):performance analysis for wind farm outgoing transmission line protection[J].Electric Power Automation Equipment,2013,33(4):1-5(in Chinese).
• [10]李彦宾,贾科,毕天姝,等.逆变型电源对故障分量方向元件的影响机理研究[J].电网技术,2017,41(10):3230-3236.Li Yanbin,Jia Ke,Bi Tianshu,et al.Influence mechanism of inverter-interfaced renewable energy generators on fault component based directional relay[J].Power System Technology,2017,41(10):3230-3236(in Chinese).
• [11]Alam M M,Leite H,Liang J,et al.Effects of VSC based HVDCsystem on distance protection of transmission lines[J].International Journal of Electrical Power&Energy Systems,2017,92:245-260.
• [12]Alam M M,Leite H,Silva N,et al.Performance evaluation of distance protection of transmission lines connected with VSC-HVDCsystem using closed-loop test in RTDS[J].Electric Power Systems Research,2017(152):168-183.
• [13]Xue S,Yang J,Chen Y,et al.The applicability of traditional protection methods to lines emanating from VSC-HVDCinterconnectors and a novel protection principle[J].Energies,2016,9(6):1-27.
• [14]丁久东,田杰,刘奎,等.柔性直流输电对交流系统负序方向元件影响分析[J].电力系统自动化,2017,41(12):113-117.Ding Jiudong,Tian Jie,Liu Kui,et al.Impact of VSC-HVDC on negative sequence directional component in alternating current system[J].Automation of Electric Power Systems,2017,41(12):113-117(in Chinese).
• [15]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 Guobing,Tao Ran,Li Bin,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(in Chinese).
• [16]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.
• [17]Guan M,Xu Z.Modeling and control of a modular multilevel converter-based HVDC system under unbalanced grid conditions[J].IEEE Transactions on Power Electronics,2012,27(12):4858-4867.
• [18]Shi X,Wang Z,Liu B,et al.Characteristic investigation and control of a modular multilevel converter-based HVDC system under singleline-to-ground fault conditions[J].IEEE Transactions on Power Electronics,2015,30(1):408-421.
• [19]郭高朋,胡学浩,温家良,等.基于大规模子模块群的MMC建模与快速仿真算法[J].电网技术,2015,39(5):1226-1232.Guo Gaopeng,Hu Xuehao,Wen Jialiang,et al.A large-scale submodule group based algorithm for modeling and high-speed simulation of modular multilevel converter[J].Power System Technology,2015,39(5):1226-1232(in Chinese).
• [20]蒋霖,周诗嘉,李子寿,等.可仿真任意工况的MMC等值电磁暂态仿真模型与平均值模型[J].南方电网技术,2016,10(2):10-17.Jiang Lin,Zhou Shijia,Li Zishou,et al.Equivalent electromagnetic model and averaged value model of MMC for operating condition simulation[J].Southern Power System Technology,2016,10(2):10-17(in Chinese).