宝鸡换流站交直流系统无功补偿建模与仿真
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摘要
宝鸡换流站交直流系统的实际设备参数和运行状况,由于在传统电网换相换高压直流输电系统中,换流站的换流过程需要消耗大量的无功功率,合理的无功补偿至关重要。介绍了交直流系统的等效模型,分析了换流站无功消耗及分组的计算方法,论述了换流器无功补偿的原则,并采用PSCAD分别对换流站的稳态运行情况和无功补偿装置投入对换流母线电压的影响情况进行了仿真,验证了模型的正确性以及分组投入的可行性,为进一步研究交、直流系统的相互影响奠定基础。
According to the actual equipment parameters and operating conditions of the Baoji AC and DC system,combined with the typical control mode of the HVDC transmission system,due to a large amount of reactive power consumed by the converter station during the commutation process,reasonable AC filter configuration is critical.The reactive power consumption of the converter station and the switching condition of the filter are analyzed in different operation modes.The electromagnetic simulation software PSCAD is used to simulate the steadystate operation of the converter station and the process of switching the AC filter.The simulation results verify the correctness of the model and the feasibility of reactive group switching,which lays a foundation for further study of the interaction between AC and DC systems.
According to the actual equipment parameters and operating conditions of the Baoji AC and DC system,combined with the typical control mode of the HVDC transmission system,due to a large amount of reactive power consumed by the converter station during the commutation process,reasonable AC filter configuration is critical.The reactive power consumption of the converter station and the switching condition of the filter are analyzed in different operation modes.The electromagnetic simulation software PSCAD is used to simulate the steadystate operation of the converter station and the process of switching the AC filter.The simulation results verify the correctness of the model and the feasibility of reactive group switching,which lays a foundation for further study of the interaction between AC and DC systems.
引文
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[14]邓艳平,杨秀,张美霞,等.±800 kV向上直流换流站交流滤波器的配置与控制[J].高压电器,2017,53(2):8-13.DENG Yanping,YANG Xiu,ZHANG Meixia,et al.Configuration and control of AC filter for converter station of Xiangjiaba-Shanghai±800 kVDC power transmission project[J].High Voltage Apparatus,2017,53(2):8-13.
[15]汪娟娟,梁泽勇,李子林,等.高压直流输电系统低功率运行的无功控制策略[J].电力系统自动化,2017,41(6):154-158.WANG Juanjuan.LIANG Zeyong,LI Zilin,et al.Reactive power control strategy for low power operation of HVDC transmission system[J].Automation of Electric Power,2017,41(6):154-158.
[16]丁立国,沈阳武,许加柱,等.连接弱交流系统的高压直流换流站无功补偿协调控制策略[J].电力系统自动化,2017,41(8):22-29.DING Liguo,SHEN Yangwu,XU Jiazhu,et al.Coordinated control strategy of reactive compensation for HVDC converter station connected to weak ACsystem[J].Automation of Electric Power,2017,41(8):22-29.
[2]梁旭明,张平,常勇.高压直流输电技术现状及发展前景[J].电网技术,2012,36(4):1-9.LIANG Xuming,ZHANG Ping,CHANG Yong.Recent advances in high-voltage direct-current power transmission and its developing Potential[J].Power System Technology,2012,36(4):1-9.
[3]王祥旭,郭春林,肖湘宁,等.基于RTDS±800 kV的特高压直流输电系统的建模与仿真[J].华东电力,2011,39(3):335-338.WANG Xiangxu,GUO Chunlin,XIAO Xiangning,et al.RTDS-based modeling and simulation of±800 kV UHVDC transmission system[J].East China Electric Power,2011,39(3):335-338.
[4]郑晓冬,邰能灵,杨光亮,等.特高压直流输电系统的建模与仿真[J].电力自动化设备,2012,32(7):10-14,61.HENG Xiaodong,TAI Nengling,YANG Guangliang,et al.Modeling and simulation of UHVDC system[J].Electric Power Automation Equipment,2012,32(7):10-14,61.
[5]尚肖肖.高压直流输电系统控制策略仿真模型的研究[D].淮南:安徽理工大学,2018.SHANG Xiaoxiao.Research on the model of HVDCtransmission control system[D].Huainan:Anhui University of Science and Technology,2018.
[6]王昊.基于PSCAD的呼辽直流系统建模及仿真研究[D].北京:华北电力大学,2016.WANG Hao.Research on modeling and simulation of Hu-Liao DC system based on PSCAD[D].Beijing:North China Electric Power University,2016.
[7]赵向磊.基于PSCAD的宁东直流输电系统建模与仿真分析[D].济南:山东大学,2014.ZHAO Xianglei.Modeling and simulation analysis of Ning Dong HVDC system based on PSCAD[D].Jinan:Shandong University,2014.
[8]涂仁川,王胜,关红兵,等.糯扎渡特高压直流输电工程无功控制策略研究[J].南方电网技术,2013,7(6):31-36.TU Renchuan,WANG Sheng,GUAN Hongbing,et al.Research of the reactive power control strategy in Nuozhadu UHVDC project[J].Southern Power System Technology,2013,7(6):31-36.
[9]罗敬华,汪娟娟,梁泽勇,等.溪洛渡同塔双回直流输电工程无功平衡与补偿方案[J].广东电力,2014,27(2):93-99.LUO Jinghua,WANG Juanjuan,LIANG Zeyong,et al.Reactive power balance and compensation scheme for Xiluodu double circuits on the same tower DC power transmission engineering[J].Guangdong Electric Power,2014,27(2):93-99.
[10]朱晟毅.串联多端直流输电无功补偿及控制策略研究[D].北京:华北电力大学,2012.HU Shengyi.Research on reactive power compensation and control strategy for series MTDCtransmission systems[D].Beijing:North China Electric Power University,2012.
[11]郭春义,赵剑,刘炜,等.抑制高压直流输电系统换相失败方法综述[J].中国电机工程学报,2018,38(增刊1):1-10.GUO Chunyi,ZHAO Jian,LIU Wei,et al.Areview of methods to mitigate the commutation failure for LCC-HVDC[J].Proceedings of the CSEE,2018,38(Sup1):1-10.
[12]高压直流换流站无功补偿与配置技术导则:GB/T31460-2015[S].Technical guide for reactive power compensation and allocation of HVDC converter stations:GB/T31460-2015[S].
[13]邓鸿强,王渝红,李兴源,等.高压直流换流站无功消耗及站内补偿装置配置综述[J].华东电力,2012,40(3):382-387.D E N G Hongqiang,WA N G Yuhong,LIXingyuan,et al.Overview of reactive power consumption and compensation device configuration in HVDC converter station[J].East China Electric Power,2012,40(3):382-387.
[14]邓艳平,杨秀,张美霞,等.±800 kV向上直流换流站交流滤波器的配置与控制[J].高压电器,2017,53(2):8-13.DENG Yanping,YANG Xiu,ZHANG Meixia,et al.Configuration and control of AC filter for converter station of Xiangjiaba-Shanghai±800 kVDC power transmission project[J].High Voltage Apparatus,2017,53(2):8-13.
[15]汪娟娟,梁泽勇,李子林,等.高压直流输电系统低功率运行的无功控制策略[J].电力系统自动化,2017,41(6):154-158.WANG Juanjuan.LIANG Zeyong,LI Zilin,et al.Reactive power control strategy for low power operation of HVDC transmission system[J].Automation of Electric Power,2017,41(6):154-158.
[16]丁立国,沈阳武,许加柱,等.连接弱交流系统的高压直流换流站无功补偿协调控制策略[J].电力系统自动化,2017,41(8):22-29.DING Liguo,SHEN Yangwu,XU Jiazhu,et al.Coordinated control strategy of reactive compensation for HVDC converter station connected to weak ACsystem[J].Automation of Electric Power,2017,41(8):22-29.