广东电网负荷中心区SVC应用研究
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摘要
随着负荷水平的快速增长和外来送电比例的逐步上升,广东电网珠江三角洲负荷中心区的电压稳定问题日益突出。分别从静态电压稳定性和暂态电压稳定性两方面出发,研究了广东电网负荷中心区域电压稳定状况,指出了电压稳定相对薄弱的220k V站点,并结合变电站实际施工条件,提出了负荷中心区SVC应用初步配置方案。最后从静态电压稳定性和暂态电压稳定性两方面出发校验所提方案的有效性。分析结果表明,所提方案可以显著提升负荷中心区暂态电压支撑能力,有效改善系统的电压稳定水平。
With the rapid growth of loads and external electric power infeed, the voltage stability in the load centers of the Pearl River Delta of Guangdong power grid is becoming increasingly prominent. In this paper, the voltage stability in the load centers of Guangdong power grid is investigated from the aspects of both the static and transient voltage stabilities and it is concluded that the 220-k V substations are prone to voltage instability. Therefore, the preliminary SVC application scheme is proposed in combination with the practical construction conditions of these substations and the availability of the scheme is verified from the aspects of both the static and transient stabilities. The result shows that the proposed scheme can enhance the voltage support in the load centers of Guangdong power grid and benefit the transient voltage stability of the system significantly.
With the rapid growth of loads and external electric power infeed, the voltage stability in the load centers of the Pearl River Delta of Guangdong power grid is becoming increasingly prominent. In this paper, the voltage stability in the load centers of Guangdong power grid is investigated from the aspects of both the static and transient voltage stabilities and it is concluded that the 220-k V substations are prone to voltage instability. Therefore, the preliminary SVC application scheme is proposed in combination with the practical construction conditions of these substations and the availability of the scheme is verified from the aspects of both the static and transient stabilities. The result shows that the proposed scheme can enhance the voltage support in the load centers of Guangdong power grid and benefit the transient voltage stability of the system significantly.
引文
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[8]陆超,崔文进,李红军,等.京沪穗电网暂态电压稳定问题与STATCOM应用[J].电力系统自动化,2004,28(11):9-12.LU Chao,CUI Wenjin,LI Hongjun,et al.Problems and solutions of transient voltage stability in load centers of China[J].Automation of Electric Power Systems,2004,28(11):9-12.
[9]陈汉雄,黎岚.川渝特高压电网加装SVC提高电网稳定水平研究[J].中国电力,2014,47(5):72-77.CHEN Hanxiong,LI Lan.Improving grid dynamic stability by installing SVCs in relative substations in Sichuan-Chongqing power grid of UHVAC/UHVDC[J].Electric Power,2014,47(5):72-77.
[10]程改红,赵勇,陈凌云,等.SVC在普洱换流站无功配置中应用的可行性[J].中国电力,2011,44(10):11-15.CHENG Gaihong,ZHAO Yong,CHEN Lingyun,et al.Investigation on application of SVC in reactive power compensation for Puer Converter Station of Nuozhadu-Guangdong UHVDC Project[J].Electric Power,2011,44(10):11-15.
[11]CIGRE Report.Planning against voltage collapse[R].Paris:CIGRE,1987.
[12]周双喜,朱凌志,郭锡玖,等.电力系统电压稳定性及其控制[M].北京:中国电力出版社,2004:162-165.
[13]蔡晔,徐政.基于PSS/E的节点静态电压稳定极限计算[J].华东电力,2002,9(1):27-29.CAI Ye,XU Zheng.Computation of static voltage stability limit of node based on PPS/E package[J].East China Electric Power,2002,9(1):27-29.
[2]任丕德,刘发友,周胜军.动态无功补偿技术的应用现状[J].电网技术,2004,28(23):81-83.REN Pide,LIU Fayou,ZHOU Shengjun.Present application situation of dynamic reactive power compensation technology[J].Power System Technology,2004,28(23):81-83.
[3]殷威扬,刘宝宏,马世英,等.中俄背靠背换流站直流系统与静止无功补偿器的协调运行[J].电网技术,2007,31(12):57-62.YIN Weiyang,LIU Baohong,MA Shiying,et al.Coordinated operation of HVDC/SVC in China-Russia back-to-back converter station[J].Power System Technology,2007,31(12):57-62.
[4]刘文华,宋强,滕乐天,等.基于集成门极换向晶闸管与链式逆变器的±50 Mvar静止同步补偿器[J].中国电机工程学报,2008,28(15):55-60.LIU Wenhua,SONG Qiang,TENG Letian,et al.±50 Mvar STATCOM based on chain circuit converter employing IGCT’s[J].Proceedings of the CSEE,2008,28(15):55-60.
[5]赵刚,张皎,李长宇.静止无功补偿器在川渝电网500 k V单相瞬时对地短路试验中的控制效果[J].电网技术,2008,32(3):66-69.ZHAO Gang,ZHANG Jiao,LI Changyu.Control effect of static var compensator in test of temporary single-phase earth fault in500 k V Chuanyu power grid[J].Power System Technology,2008,32(3):66-69.
[6]周胜军,姚大伟.鞍山红一变SVC国产化示范工程介绍[J].电网技术,2008,32(22):45-49.ZHOU Shengjun,YAO Dawei.Introduction of domestic-manufactured demonstration project of SVC applied in Anshan-Hongqipu No.1substation[J].Power System Technology,2008,32(22):45-49.
[7]马世英,唐晓骏,张东霞,等.国家电网31个重点城市无功规划汇总评价[J].电网技术,2009,33(18):38-43.MA Shiying,TANG Xiaojun,ZHANG Dongxia,et al.Summarization and evaluation for reactive power planning schemes of 31 major rrban power networks underneath state grid corporation of China[J].Power System Technology,2009,33(18):38-43.
[8]陆超,崔文进,李红军,等.京沪穗电网暂态电压稳定问题与STATCOM应用[J].电力系统自动化,2004,28(11):9-12.LU Chao,CUI Wenjin,LI Hongjun,et al.Problems and solutions of transient voltage stability in load centers of China[J].Automation of Electric Power Systems,2004,28(11):9-12.
[9]陈汉雄,黎岚.川渝特高压电网加装SVC提高电网稳定水平研究[J].中国电力,2014,47(5):72-77.CHEN Hanxiong,LI Lan.Improving grid dynamic stability by installing SVCs in relative substations in Sichuan-Chongqing power grid of UHVAC/UHVDC[J].Electric Power,2014,47(5):72-77.
[10]程改红,赵勇,陈凌云,等.SVC在普洱换流站无功配置中应用的可行性[J].中国电力,2011,44(10):11-15.CHENG Gaihong,ZHAO Yong,CHEN Lingyun,et al.Investigation on application of SVC in reactive power compensation for Puer Converter Station of Nuozhadu-Guangdong UHVDC Project[J].Electric Power,2011,44(10):11-15.
[11]CIGRE Report.Planning against voltage collapse[R].Paris:CIGRE,1987.
[12]周双喜,朱凌志,郭锡玖,等.电力系统电压稳定性及其控制[M].北京:中国电力出版社,2004:162-165.
[13]蔡晔,徐政.基于PSS/E的节点静态电压稳定极限计算[J].华东电力,2002,9(1):27-29.CAI Ye,XU Zheng.Computation of static voltage stability limit of node based on PPS/E package[J].East China Electric Power,2002,9(1):27-29.