10 kV配电线路串、并联混合电容器补偿技术研究
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摘要
由于串联补偿电容器串联在线路中,存在和负载中的电机产生谐振的问题,为了解决这个问题,设计的串补度往往不能过高,否则影响补偿效果。本文提出了一种适合10 kV配电线路的串、并联混合电容器补偿技术。详细研究了其基本工作原理、推导出了补偿电压和补偿无功功率的公式、分析了串联和并练补偿电容器的相对位置对补偿效果的影响;提出了并联和串联补偿容量的确定策略;通过对一回实际10 kV线路的补偿设计和计算机仿真计算,进一步阐述了容量设计策略,并验证了理论分析的正确性。最后介绍了应用该技术的一个实际工程案例。
The resonance issue is generated with the motor in the load because the series compensation capacitor is in series in the line. For solving the problem,the design series compensation degree shall not too high,otherwise the compensation effect will be affected. In this paper,a kind of series and parallel mixed capacitor compensation technology which is suitable for 10 kV power distribution line is proposed.Its basic operating principle is studied in detail,the formula of compensation voltage and compensation reactive power is derived and the influence of relative position of series and parallel compensation capacitor on the compensation result is analyzed. The strategy on deterring the parallel and series compensation capacity is proposed and the capacity design strategy is described further by way of compensation design and computer simulation calculation of one circuit real 10 kV line and the correctness of the theoretical analysis is verified.Finally,one real engineering case with the technology is introduced.
The resonance issue is generated with the motor in the load because the series compensation capacitor is in series in the line. For solving the problem,the design series compensation degree shall not too high,otherwise the compensation effect will be affected. In this paper,a kind of series and parallel mixed capacitor compensation technology which is suitable for 10 kV power distribution line is proposed.Its basic operating principle is studied in detail,the formula of compensation voltage and compensation reactive power is derived and the influence of relative position of series and parallel compensation capacitor on the compensation result is analyzed. The strategy on deterring the parallel and series compensation capacity is proposed and the capacity design strategy is described further by way of compensation design and computer simulation calculation of one circuit real 10 kV line and the correctness of the theoretical analysis is verified.Finally,one real engineering case with the technology is introduced.
引文
[1]梁振锋.关于配网低电压问题的研究[J].科技创新与应用,2015(36):175-175.LIANG Zhenfeng.Research on the problem of low voltage in distribution network[J].Technology Innovation and Application,2015(36):175-175.
[2]梁一桥,吕佳铭.10 kV配网智能串联补偿装置研制及其工程应用[J].电网技术,2014,38(S2):220-225.LIANG Yiqiao,LYU Jiaming.Development and engineering application of intelligent series compensation device for10 k V distribution network[J].Power System Technology,2014,38(S2):220-225.
[3]卓谷颖.配网固定串补和并补的比较[Z],2012.
[4]雷宪章,POVH D.串联补偿技术在远距离高电压交流输电系统中的应用[J].电网技术,1998,22(11):34-38.LEI Xianzhang,POVH D.Series compensation for a long distance AC transmission system[J].Power System Technology,1998,22(11):34-38.
[5]卓谷颖,江道灼,梁一桥,等.改善配网电压质量的固定串补技术研究[J].电力系统保护与控制,2013,41(8):61-67.ZHUO Guying,JIANG Daozhuo,LIANG Yiqiao,et al.A research of D-FSC for improving voltage quality in distribution networks[J].Power System Protection and Control,2013,41(8):61-67.
[6]王笑棠,王曜飞,宋亚夫,等.串补解决10kV配电线路高压与低压问题的研究[J].电力电容器与无功补偿,2015,36(2):33-37.WANG Xiaotang,WANG Yaofei,SONG Yafu,et al.Research on series capacitor compensation technique solving 10 kVdistribution line high-voltage and low-voltage problems[J].Power Capacitor&Reactive Power Compensation,2015,36(2):33-37.
[7]赵文忠,王东平.串联无功补偿技术在配网中的应用分析[J].低压电器,2010(5):37-39.ZHAO Wenzhong,WANG Dongping.Application analysis of series reactive power compensation in distribution network[J].Lower Voltage Apparatus,2010(5):37-39.
[8]ROBERT ARTHURBARR.Series compensation of distribution and subtransmission lines[D].Department of ECE,University of Wollongong,1997.
[9]MISKE S A.Considerations for the application of series capacitors to radial power distribution circuits[J].IEEE Transactions on Power Delivery,2001,16(2):306-318.
[10]LAT M V,KUNDU D,BONADIE G.Overvoltage protection scheme for series capacitor banks on high voltage distribution systems[J].IEEE Transactions on Power Delivery,1990,5(3):1459-1465.
[11]李勇,程汉湘,方伟明,等.无功补偿装置在电力系统中的应用综述[J].广东电力,2016,29(6):87-92.LI Yong,CHENG Hanxiang,FANG Weiming,et al.Review on application of reactive power compensation devices in power systems[J].Guangdong Electric Power,2016,29(6):87-92.
[12]陈晓科,钟榜,李钙,等.三相不平衡配电系统不同补偿方式下的线路损耗[J].广东电力,2017,30(7):96-100.CHEN Xiaoke,ZHONG Bang,LI Gai,et al.Line loss of three-phase unbalanced power distribution system under different compensation modes[J].Guangdong Electric Power,2017,30(7):96-100
[13]ALBERTO D,DEL ROSSO,CLAUDIO A.A study of TCSCcontroller design for powersystem stability improvement[J].IEEE Transactions on Power Systems,2003,18(4):1487-1496.
[2]梁一桥,吕佳铭.10 kV配网智能串联补偿装置研制及其工程应用[J].电网技术,2014,38(S2):220-225.LIANG Yiqiao,LYU Jiaming.Development and engineering application of intelligent series compensation device for10 k V distribution network[J].Power System Technology,2014,38(S2):220-225.
[3]卓谷颖.配网固定串补和并补的比较[Z],2012.
[4]雷宪章,POVH D.串联补偿技术在远距离高电压交流输电系统中的应用[J].电网技术,1998,22(11):34-38.LEI Xianzhang,POVH D.Series compensation for a long distance AC transmission system[J].Power System Technology,1998,22(11):34-38.
[5]卓谷颖,江道灼,梁一桥,等.改善配网电压质量的固定串补技术研究[J].电力系统保护与控制,2013,41(8):61-67.ZHUO Guying,JIANG Daozhuo,LIANG Yiqiao,et al.A research of D-FSC for improving voltage quality in distribution networks[J].Power System Protection and Control,2013,41(8):61-67.
[6]王笑棠,王曜飞,宋亚夫,等.串补解决10kV配电线路高压与低压问题的研究[J].电力电容器与无功补偿,2015,36(2):33-37.WANG Xiaotang,WANG Yaofei,SONG Yafu,et al.Research on series capacitor compensation technique solving 10 kVdistribution line high-voltage and low-voltage problems[J].Power Capacitor&Reactive Power Compensation,2015,36(2):33-37.
[7]赵文忠,王东平.串联无功补偿技术在配网中的应用分析[J].低压电器,2010(5):37-39.ZHAO Wenzhong,WANG Dongping.Application analysis of series reactive power compensation in distribution network[J].Lower Voltage Apparatus,2010(5):37-39.
[8]ROBERT ARTHURBARR.Series compensation of distribution and subtransmission lines[D].Department of ECE,University of Wollongong,1997.
[9]MISKE S A.Considerations for the application of series capacitors to radial power distribution circuits[J].IEEE Transactions on Power Delivery,2001,16(2):306-318.
[10]LAT M V,KUNDU D,BONADIE G.Overvoltage protection scheme for series capacitor banks on high voltage distribution systems[J].IEEE Transactions on Power Delivery,1990,5(3):1459-1465.
[11]李勇,程汉湘,方伟明,等.无功补偿装置在电力系统中的应用综述[J].广东电力,2016,29(6):87-92.LI Yong,CHENG Hanxiang,FANG Weiming,et al.Review on application of reactive power compensation devices in power systems[J].Guangdong Electric Power,2016,29(6):87-92.
[12]陈晓科,钟榜,李钙,等.三相不平衡配电系统不同补偿方式下的线路损耗[J].广东电力,2017,30(7):96-100.CHEN Xiaoke,ZHONG Bang,LI Gai,et al.Line loss of three-phase unbalanced power distribution system under different compensation modes[J].Guangdong Electric Power,2017,30(7):96-100
[13]ALBERTO D,DEL ROSSO,CLAUDIO A.A study of TCSCcontroller design for powersystem stability improvement[J].IEEE Transactions on Power Systems,2003,18(4):1487-1496.