基于MMC的渝鄂直流背靠背联网工程控制策略研究
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摘要
渝鄂直流背靠背联网工程的建设对大规模电网的动态控制能力提出了更高的要求。首先介绍了该工程的系统结构,在研究了基本的MMC-HVDC控制策略之后,从实际工程角度对系统运行的控制要求进行研究,提出了一种在传统功率控制基础上附加越限电压偏差值的双环控制策略。同时,介绍了MMC-HVDC在交流故障下的故障穿越逻辑,并结合MMC运行区间提出了MMC-HVDC的混合仿真流程。最后,基于PSD-PSModel对渝鄂系统进行混合仿真,验证了所提控制策略对于大规模联网工程的有效性与正确性。
The construction of back to back MMC-HVDC connecting Chongqing and Hubei Power Grid has put forward higher requirements for the dynamic control capability of large-scale power grids. This paper first introduces the system structure of the project. After studying the basic MMC-HVDC control strategy, considering the demand of the actual project for the control effect on the system operation, this paper proposes a new double-loop control strategy based on the traditional power control, in which the limit of the voltage deviation is added. At the same time, the fault crossing logic of MMC-HVDC under severe AC faults is introduced. The simulation process combining control strategy and MMC-HVDC operating zone is also provided. Finally, The PSDPSModel is used to simulate the Chongqing-Hubei system. The results verify the effectiveness and correctness of the proposed control strategy for large-scale networked projects.
The construction of back to back MMC-HVDC connecting Chongqing and Hubei Power Grid has put forward higher requirements for the dynamic control capability of large-scale power grids. This paper first introduces the system structure of the project. After studying the basic MMC-HVDC control strategy, considering the demand of the actual project for the control effect on the system operation, this paper proposes a new double-loop control strategy based on the traditional power control, in which the limit of the voltage deviation is added. At the same time, the fault crossing logic of MMC-HVDC under severe AC faults is introduced. The simulation process combining control strategy and MMC-HVDC operating zone is also provided. Finally, The PSDPSModel is used to simulate the Chongqing-Hubei system. The results verify the effectiveness and correctness of the proposed control strategy for large-scale networked projects.
引文
[1]华中电网有限公司.华中电网“十二五”发展规划[R].武汉:华中电网有限公司,2011.
[2]张群,赵倩,郝俊芳,等.渝鄂直流背靠背联网工程最后断路器跳闸功能配置[J].中国电力,2017,50(9):72-76.ZHANG Qun, ZHAO Qian, HAO Junfang, et al. Configuration of last breaker trip function for Chong-Hubei back-to-back HVDC project[J]. Electric Power, 2017, 50(9):72-76.
[3]罗映红,许义佳,史彤彤,等.具有直流故障阻断能力的混合型模块化多电平换流器[J].中国电力,2018, 51(5):1-9.LUO Yinghong, XU Yijia, SHI Tongtong, et al. Hybrid topology of modular multilevel converter with DC fault blocking capability[J].Electric Power, 2018, 51(5):1-9.
[4]鲁晓军,林卫星,安婷,等.MMC电气系统动态相量模型统一建模方法及运行特性分析[J].中国电机工程学报,2016, 36(20):5479-5491.LU Xiaojun, LIN Weixing, AN Ting, et al. A unified dynamic phasor modeling and operating characteristic analysis of electrical system of MMC[J]. Proceedings of the CSEE, 2016, 36(20):5479-5491.
[5]孙黎,胡峰,穆钢.基于改进控制策略的MMC-HVDC运行特性研究[J].电力系统保护与控制,2018, 46(9):10-16.SUN Li, HU Feng, MU Gang. Investigation of MMC-HVDCoperation performance based on improved control strategy[J]. Power System Protection and Control, 2018, 46(9):10-16.
[6]陈朋,李梅航,严兵,等.适用于多端柔性直流输电系统的通用控制策略[J].电力系统自动化,2016,40(21):47-52.CHEN Pen, LI Meihang, YAN Bing, et al. General control strategy for VSC-based multi-terminal DC Systems[J]. Automation of Electric Power Systems,2016, 40(21):47-52.
[7]宋平岗,罗善江,杨姚,等.MMC变流器新型滑模控制器设计[J].华东交通大学学报,2015, 32(4):85-89.SONG Pinggang, LUO Shanjiang, YANG Yao, et al. Designing of new sliding-mode controller for MMC[J]. Journal of East China Jiaotong University, 2015, 32(4):85-89.
[8]张帆,许建中,赵成勇,等.模块化多电平换流器分极控制策略[J].电力系统自动化,2017, 41(6):113-121.ZHANG Fan, XU Jianhong, ZHAO Chengyong, et al. Separate DC polar control for modular multilevel converters[J]. Automation of Electric Power Systems,2017, 41(6):113-121.
[9]王振,蒋碧松,杨治中,等.背靠背混合直流的无功协调控制策略研究[J].中国电力,2017, 50(6):101-107.WANG Zhen, JIANG Bisong, YANG Zhizhong, et al. Research on reactive power coordination control strategy for back to back hybridHVDC system[J]. Electric Power, 2017, 50(6):101-107.
[10]薛花,李杨,王育飞.MMC-HVDC无源性PI稳定控制与环境抑制方法[J].电力系统保护与控制,2017, 45(19):78-85.XUE Hua, LI Yang, WANG Yufei, et al. Passivity-based PI stability control and circulating current suppression method of MMCHVDC[J]. Power System Protection and Control, 2017, 45(19):78-85.
[11]刘焕,岳伟,张一工,等.基于准比例-谐振控制的MMC-HVDC环流抑制策略[J].电力系统自动化,2015, 39(12):146-151.LIU Huan, YUE Wei, ZHAGN Yigong, et al. Circuiting current restraining strategy based on quasi proportional-resonance control in MMC-HVDC[J]. Automation of Electric Power Systems, 2015,39(12):146-151.
[12]李金科,金新民,吴学智,等.不平衡交流电网模块化多电平变流器特性分析及环流抑制方法[J].中国电机工程学报,2017, 37(12):3535-3544.LI Jinke, JIN Xinmin, WU Xuezhi, et al. Characteristic analysis and a circulating current control method in modular multilevel converters under unbalanced grid conditions[J]. Proceedings of the CSEE, 2017,37(12):3535-3544.
[13]周月宾,江道灼,胡鹏飞,等.一种MMC-HVDC的直流电压波动抑制新方法[J].中国电机工程学报,2013, 30(27):1618-1621.ZHOU Yuebin, JIANG Daozhuo, HU Pengfei, et al. A new approachfor suppressing DC voltage ripples of MMC-HVDC[J]. Proceedings of the CSEE,2013, 30(27):1618-1621.
[14]付华,曹庆春.基于SSPFM电容均压的MMC-HVDC系统模型预测控制策略[J].高电压技术,2017, 43(4):1114-1120.FU Hua, CAO Qingchun. SSPFM control strategy for capacitance equalizing the MMC-HVDC system based on model predictions[J].High Voltage Engineering, 2017, 43(4):1114-1120.
[15] GUAN Minyuan, XU Zheng. 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.
[16]孔明,汤广福,贺之渊,等.不对称交流电网下MMC-HVDC输电系统的控制策略[J].中国电机工程学报,2013, 33(28):41-49.KONG Ming, TANG Guangfu, HE Zhiyuan, et al. A control strategy for modular multilevel converter based HVDC of unbalanced AC systems[J]. Proceedings of the CSEE, 2013, 33(28):41-49.
[17]董鹏,蔡旭,吕敬.不对称交流电网下MMC-HVDC系统的控制策略[J].中国电机工程学报,2018, 38(16):4646-4657.DONG Peng, CAI Xu, LV Jing. Control strategy of MMC-HVDC system under asymmetric AC grid conditions[J]. Proceedings of the CSEE,2018, 38(16):4646-4657.
[18]国网经济技术研究院.渝鄂直流背靠背联网工程设计手册[R].北京:国网经济技术研究院,2015.
[19]阳岳希,杨杰,贺之渊,等.基于MMC的背靠背柔性直流输电系统控制策略[J].电力系统自动化,2017,41(4):120-124.YANG Yuexi, YANG Jie, HE Zhiyuan, et al. Control strategy ofMMC based back-to-back HVDC transmission system[J].Automation of Electric Power Systems,2017, 41(4):120-124.
[20]徐政.柔性直流输电系统[M].北京:机械工业出版社,2013:102-106.
[21]王银顺,李潇潇,张鑫.基于临界短路比的VSC-HVDC接入弱交流系统的运行特性[J].高电压技术,2017, 43(4):1106-1113.WANG Yinshun, LI Xiaoxiao, ZHANG Xin. Operation characteristics of VSC-HVDC links connected to weak AC systems based on critical SCR[J]. High Voltage Engineering, 2017, 43(4):1106-1113.
[22]熊家祚,张能,翟党国,等.大规模电力电子设备接人的电力系统混合传真接口技术综述[J].电力系统保护与控制,2018, 46(10):152-160.XIONG Jiazuo, ZHANG Neng, ZHAI Dangguo, et al. Review of hybrid simulation interface technology for power system of largescale power electronic equipment access[J]. Power System Protection and Control, 2018, 46(10):152-160.
[2]张群,赵倩,郝俊芳,等.渝鄂直流背靠背联网工程最后断路器跳闸功能配置[J].中国电力,2017,50(9):72-76.ZHANG Qun, ZHAO Qian, HAO Junfang, et al. Configuration of last breaker trip function for Chong-Hubei back-to-back HVDC project[J]. Electric Power, 2017, 50(9):72-76.
[3]罗映红,许义佳,史彤彤,等.具有直流故障阻断能力的混合型模块化多电平换流器[J].中国电力,2018, 51(5):1-9.LUO Yinghong, XU Yijia, SHI Tongtong, et al. Hybrid topology of modular multilevel converter with DC fault blocking capability[J].Electric Power, 2018, 51(5):1-9.
[4]鲁晓军,林卫星,安婷,等.MMC电气系统动态相量模型统一建模方法及运行特性分析[J].中国电机工程学报,2016, 36(20):5479-5491.LU Xiaojun, LIN Weixing, AN Ting, et al. A unified dynamic phasor modeling and operating characteristic analysis of electrical system of MMC[J]. Proceedings of the CSEE, 2016, 36(20):5479-5491.
[5]孙黎,胡峰,穆钢.基于改进控制策略的MMC-HVDC运行特性研究[J].电力系统保护与控制,2018, 46(9):10-16.SUN Li, HU Feng, MU Gang. Investigation of MMC-HVDCoperation performance based on improved control strategy[J]. Power System Protection and Control, 2018, 46(9):10-16.
[6]陈朋,李梅航,严兵,等.适用于多端柔性直流输电系统的通用控制策略[J].电力系统自动化,2016,40(21):47-52.CHEN Pen, LI Meihang, YAN Bing, et al. General control strategy for VSC-based multi-terminal DC Systems[J]. Automation of Electric Power Systems,2016, 40(21):47-52.
[7]宋平岗,罗善江,杨姚,等.MMC变流器新型滑模控制器设计[J].华东交通大学学报,2015, 32(4):85-89.SONG Pinggang, LUO Shanjiang, YANG Yao, et al. Designing of new sliding-mode controller for MMC[J]. Journal of East China Jiaotong University, 2015, 32(4):85-89.
[8]张帆,许建中,赵成勇,等.模块化多电平换流器分极控制策略[J].电力系统自动化,2017, 41(6):113-121.ZHANG Fan, XU Jianhong, ZHAO Chengyong, et al. Separate DC polar control for modular multilevel converters[J]. Automation of Electric Power Systems,2017, 41(6):113-121.
[9]王振,蒋碧松,杨治中,等.背靠背混合直流的无功协调控制策略研究[J].中国电力,2017, 50(6):101-107.WANG Zhen, JIANG Bisong, YANG Zhizhong, et al. Research on reactive power coordination control strategy for back to back hybridHVDC system[J]. Electric Power, 2017, 50(6):101-107.
[10]薛花,李杨,王育飞.MMC-HVDC无源性PI稳定控制与环境抑制方法[J].电力系统保护与控制,2017, 45(19):78-85.XUE Hua, LI Yang, WANG Yufei, et al. Passivity-based PI stability control and circulating current suppression method of MMCHVDC[J]. Power System Protection and Control, 2017, 45(19):78-85.
[11]刘焕,岳伟,张一工,等.基于准比例-谐振控制的MMC-HVDC环流抑制策略[J].电力系统自动化,2015, 39(12):146-151.LIU Huan, YUE Wei, ZHAGN Yigong, et al. Circuiting current restraining strategy based on quasi proportional-resonance control in MMC-HVDC[J]. Automation of Electric Power Systems, 2015,39(12):146-151.
[12]李金科,金新民,吴学智,等.不平衡交流电网模块化多电平变流器特性分析及环流抑制方法[J].中国电机工程学报,2017, 37(12):3535-3544.LI Jinke, JIN Xinmin, WU Xuezhi, et al. Characteristic analysis and a circulating current control method in modular multilevel converters under unbalanced grid conditions[J]. Proceedings of the CSEE, 2017,37(12):3535-3544.
[13]周月宾,江道灼,胡鹏飞,等.一种MMC-HVDC的直流电压波动抑制新方法[J].中国电机工程学报,2013, 30(27):1618-1621.ZHOU Yuebin, JIANG Daozhuo, HU Pengfei, et al. A new approachfor suppressing DC voltage ripples of MMC-HVDC[J]. Proceedings of the CSEE,2013, 30(27):1618-1621.
[14]付华,曹庆春.基于SSPFM电容均压的MMC-HVDC系统模型预测控制策略[J].高电压技术,2017, 43(4):1114-1120.FU Hua, CAO Qingchun. SSPFM control strategy for capacitance equalizing the MMC-HVDC system based on model predictions[J].High Voltage Engineering, 2017, 43(4):1114-1120.
[15] GUAN Minyuan, XU Zheng. 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.
[16]孔明,汤广福,贺之渊,等.不对称交流电网下MMC-HVDC输电系统的控制策略[J].中国电机工程学报,2013, 33(28):41-49.KONG Ming, TANG Guangfu, HE Zhiyuan, et al. A control strategy for modular multilevel converter based HVDC of unbalanced AC systems[J]. Proceedings of the CSEE, 2013, 33(28):41-49.
[17]董鹏,蔡旭,吕敬.不对称交流电网下MMC-HVDC系统的控制策略[J].中国电机工程学报,2018, 38(16):4646-4657.DONG Peng, CAI Xu, LV Jing. Control strategy of MMC-HVDC system under asymmetric AC grid conditions[J]. Proceedings of the CSEE,2018, 38(16):4646-4657.
[18]国网经济技术研究院.渝鄂直流背靠背联网工程设计手册[R].北京:国网经济技术研究院,2015.
[19]阳岳希,杨杰,贺之渊,等.基于MMC的背靠背柔性直流输电系统控制策略[J].电力系统自动化,2017,41(4):120-124.YANG Yuexi, YANG Jie, HE Zhiyuan, et al. Control strategy ofMMC based back-to-back HVDC transmission system[J].Automation of Electric Power Systems,2017, 41(4):120-124.
[20]徐政.柔性直流输电系统[M].北京:机械工业出版社,2013:102-106.
[21]王银顺,李潇潇,张鑫.基于临界短路比的VSC-HVDC接入弱交流系统的运行特性[J].高电压技术,2017, 43(4):1106-1113.WANG Yinshun, LI Xiaoxiao, ZHANG Xin. Operation characteristics of VSC-HVDC links connected to weak AC systems based on critical SCR[J]. High Voltage Engineering, 2017, 43(4):1106-1113.
[22]熊家祚,张能,翟党国,等.大规模电力电子设备接人的电力系统混合传真接口技术综述[J].电力系统保护与控制,2018, 46(10):152-160.XIONG Jiazuo, ZHANG Neng, ZHAI Dangguo, et al. Review of hybrid simulation interface technology for power system of largescale power electronic equipment access[J]. Power System Protection and Control, 2018, 46(10):152-160.