朱瑞可;李兴源;应大力;

• 1:四川大学电气信息学院
• 2:解放军后勤工程学院

摘要(Abstract)：

直流系统的定有功控制方式牺牲了交流侧系统在发生事故时相互支援的能力。根据电压源型换流器高度可控、灵活高效的特点,提出一种适用于多端柔性直流输电(voltage sourced converter based multi-terminal high voltage direct current,VSC-MTDC)互联系统的频率稳定控制策略。该策略不需要站间通信,通过附加频率控制使换流站可对交流侧系统的频率做出响应,通过直流电压斜率控制使多个换流站共同分担直流网络中的不平衡功率,从而实现了一侧交流系统频率发生较大变化时,其余交流系统可通过VSC-MTDC进行功率支援,缓解事故系统的有功不平衡状况。最后通过仿真软件PSCAD/EMTDC进行仿真验证,结果表明所提策略充分利用了VSC-MTDC互联系统的频率调整能力,减小了故障端系统的频率变化量。

关键词(KeyWords)： 电压源型换流器;多端高压直流;直流电压斜率控制;附加频率控制

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划项目(973项目)(2013CB2280204);; 国家电网公司科技项目(多端柔性直流系统分析与协调控制策略研究)~~

作者(Author): 朱瑞可;李兴源;应大力;

Email:

DOI: 10.13335/j.1000-3673.pst.2014.10.017

参考文献(References)：

• [1]汤广福,贺之渊,滕乐天,等.电压源换流器高压直流输电技术最新研究进展[J].电网技术,2008,32(22):39-44.Tang Guangfu,He Zhiyuan,Teng Letian,et al.New progress on HVDC technology based on voltage source converter[J].Power System Technology,2008,32(22):39-44(in Chinese).
• [2]张建坡,赵成勇,孙一莹,等.基于电压源换流器型直流输电拓扑结构和调制策略[J].电网技术,2013,37(6):1732-1738.Zhang Jianpo,Zhao Chengyong,Sun Yiying,et al.Research on topological structure and control strategy for voltage source converter-based direct current power transmission[J].Power System Technology,2013,37(6):1732-1738(in Chinese).
• [3]郑超.实用柔性直流输电系统建模与仿真算法[J].电网技术,2013,37(4):1058-1063.Zheng Chao.Study on practical modeling and simulation algorithm for VSC-HVDC power transmission[J].Power System Technology,2013,37(4):1058-1063(in Chinese).
• [4]孙文博,徐华利,付媛,等.应用于大型风电基地功率外送的多端直流输电系统协调控制[J].电网技术,2013,37(6):1596-1601.Sun Wenbo,Xu Huali,Fu Yuan,et al.Coordinated control of multi-terminal DC transmission system to send out power from large-scale wind farm[J].Power System Technology,2013,37(6):1596-1601(in Chinese).
• [5]张文亮,汤涌,曾南超.多端高压直流输电技术及应用前景[J].电网技术,2010,34(9):1-6.Zhang Wenliang,Tang Yong,Zeng Nanchao.Researches on UHVDC technology[J].Power System Technology,2010,34(9):1-6(in Chinese).
• [6]汤广福,贺之渊,庞辉.柔性直流输电工程技术研究、应用及发展[J].电力系统自动化,2013,37(15):3-14.Tang Guangfu,He Zhiyuan,Pang Hui.Research,application and development of VSC-HVDC engineering technology[J].Automation of Electric Power Systems,2013,37(15):3-14(in Chinese).
• [7]陈海荣.徐政.适用于VSC-MTDC系统的直流电压控制策略[J].电力系统自动化,2006,30(19):28-33.Chen Hairong,Xu Zheng.A novel DC voltage control strategy for VSC based multi-terminal HVDC system[J].Automation of Electric Power Systems,2006,30(19):28-33(in Chinese).
• [8]陈谦,唐国庆,潘诗锋.采用多点直流电压控制方式的VSC多端直流输电系统[J].电力自动化设备,2004,24(5):10-15.Chen Qian,Tang Guoqing,Pan Shifeng.VSC-MTDC using multi-terminal DC voltage control scheme[J].Electric Power Automation Equipment,2004,24(5):10-15(in Chinese).
• [9]唐庚,徐政,刘昇,等.适用于多端柔性直流输电系统的新型直流电压控制策略[J].电力系统自动化,2013,37(15):125-132.Tang Geng,Xu Zheng,Liu Sheng,et al.A novel DC voltage control strategy for VSC-MTDC systems[J].Automation of Electric Power Systems,2013,37(15):125-132(in Chinese).
• [10]任敬国,李可军,刘合金,等.基于改进定有功功率控制特性的VSC-MTDC系统仿真[J].电力系统自动化,2013,37(15):133-139.Ren Jingguo,Li Kejun,Liu Hejin,et al.Coordinated control strategy of VSC-MTDC system based on improved DC voltage-active power characteristic[J].Automation of Electric Power Systems,2013,37(15):133-139(in Chinese).
• [11]程丽敏,李兴源.多区域交直流互联系统的频率稳定控制[J].电力系统保护与控制,2011,39(7):56-62.Cheng Limin,Li Xingyuan.Load frequency control in multi-area AC/DC interconnected power system[J].Power System Protection and Control,2011,39(7):56-62(in Chinese).
• [12]徐泰山,薛禹胜.暂态频率偏移可接受性的定量分析[J].电力系统自动化,2002,26(19):7-10.Xu Taishan,Xue Yusheng.Quantitative assessments of transient frequency deviation acceptability[J].Automation of Electric Power Systems,2002,26(19):7-10(in Chinese).
• [13]胡永银,李兴源,周洪宇,等.应用于VSC-HVDC输电的谐波抑制控制器[J].电网技术,2014,38(3):583-588.Hu Yongyin,Li Xingyuan,Zhou Hongyu,et al.A kind of harmonic suppression controller used in VSC-HVDC transmission system[J].Power System Technology,2014,38(3):583-588(in Chinese).
• [14]朱红萍,罗隆福.直流调制策略改善交直流混联系统的频率稳定性研究[J].中国电机工程学报,2012,32(16):36-43.Zhu Hongping,Luo Longfu.Improving frequency stability of parallel AC-DC hybrid systems by power modulation strategy of HVDC link[J].Proceedings of the CSEE,2012,32(16):36-43(in Chinese).
• [15]张少康,李兴源,王渝红.HVDC附加控制策略对频率稳定性的影响研究[J].电力系统保护与控制,2011,39(19):100-103.Zhang Shaokang,Li Xingyuan,Wang Yuhong.Research on the effect of HVDC additional control strategy on frequency stability[J].Power System Protection and Control,2011,39(19):100-103(in Chinese).
• [16]余涛,沈善德.华东-华中多回HVDC辅助功率/频率控制[J].电力系统自动化,2005,29(1):77-82.Yu Tao,Shen Shande.Study on the auxiliary power/frequency control of center China to east China multi-circuit HVDC links[J].Power System Technology,2005,29(1):77-82(in Chinese).
• [17]田庆.天广直流双侧频差调制异常分析[J].电力系统保护与控制,2011,39(14):94-98.Tian Qing.Studies on the abnormality of bilateral frequency difference modulation in Tian-Guang HVDC[J].Power System Protection and Control,2011,39(14):94-98(in Chinese).
• [18]袁旭峰,文劲宇,程时杰.多端直流输电系统中的直流功率调制技术[J].电网技术,2007,31(14):57-61.Yuan Xufeng,Wen Jinyu,Cheng Shijie.DC power modulation in multi-terminal HVDC transmission system[J].Power System Technology,2007,31(14):57-61(in Chinese).