张勇

• 1:北京工商大学计算机与信息工程学院

摘要(Abstract)：

随着分布式发电的接入,配电网由单电源转化为多电源网络,原有的某些继电保护系统会受到显著影响。文中分析了分布式发电接入对配电网继电保护影响的成因,阐明了孤岛运行的危害。在分析比较主要的孤岛检测方法的优缺点及适用范围的基础上,针对某一中等容量分布式电源接入保护方案,比较了接入变压器的接线方式和中性点接地方式对于接入保护的影响,进而说明接入保护的主要功能。分析结果表明,分布式发电对于配电网继保系统有重要影响,主要体现在对过电流保护、距离保护、孤岛运行、自动重合闸和故障电流方向等方面,应采用相应措施解决。

关键词(KeyWords)： 分布式发电;继电保护;配电网;接入保护;孤岛运行

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张勇

参考文献(References)：

• [1]庞建业,夏晓宾,房牧,等(Pang Jianye,Xia Xiaobin,Fang Mu,et al).分布式发电对配电网继电保护的影响(Impact of distributed generation to relay protec-tion of distribution system)[J].继电器(Relay),2007,35(11):5-8.
• [2]花丽丹,陆于平,吴罡,等(Hua Lidan,Lu Yuping,WuGang,et al).DG容量在分布式发电中对数字保护影响的研究(Study on the effect of distributed gener-ation size on digital protective device in distributionsystem)[J].中国电力(Electric Power),2008,41(3):12-16.
• [3]丛伟,潘贞存,王成山,等(Cong Wei,Pan Zhencun,Wang Chengshan,et al).含高渗透率DG的配电系统区域纵联保护方案(A substation area longitudinalprotection(SALP)scheme for distribution systemwith hign DG penetration)[J].电力系统自动化(Au-tomation of Electric Power Systems),2009,33(10):81-85.
• [4]Mozina Charles J.Interconnect protection of dispers-ed generators[C]∥IEEE Power Engineering SocietyTransmission and Distribution Conference,Atlanta,USA:2001.
• [5]Dugan Roger C,McDermott Thomas E.Operatingconflicts for distributed generation on distributionsystems[C]∥Rural Electric Power Conference,Lit-tle Rock,USA:2001.
• [6]Dugan Roger C,McDermott Thomas E.Distributedgeneration[J].IEEE Industry Applications Magazine,2002,8(2):19-25.
• [7]Barker Philip P,De Mello Robert W.Determiningthe impact of distributed generation on power sys-tems:Part 1 radial distribution systems[C]∥IEEEPower Engineering Society Transmission and Distri-bution Conference,Seattle,USA:2000.
• [8]Katiraei F,Iravani M R,Lehn P W.Micro-grid au-tonomous operation during and subsequent to islan-ding process[J].IEEE Trans on Power Delivery,2005,20(1):248-257.
• [9]Salman S K.Detection of embedded generator islan-ding condition using elliptical trajectory technique[C]∥Sixth International Conference on Developments inPower System Protection,Nottingham,UK:1997.
• [10]Funabashi T,Koyanagi K,Yokoyama R.A Reviewof islanding detection methods for distributed re-sources[C]∥IEEE Power Technology Conference,Bologna,Italy:2003.
• [11]Hopewell P D,Jenkins N,Cross A D.Loss-of-mains detection for small generators[J].IEE Pro-ceedings:Electrical Power Applications,1996,143(3):225-230.
• [12]Warin J,Allen W H.Loss of mains protection[C]∥ERA Conference on Circuit Protection for Industrialand Commercial Installations,London,UK:1990.
• [13]O'Kane P,Fox B.Loss of mains detection for em-bedded generation by system impedance monitoring[C]∥Sixth International Conference on Develop-ments in Power System Protection,Nottingham,UK:1997.
• [14]Smith G A,Onions P A,Infield D G.Predicting is-landing operation of grid connected PV inverters[J].IEE Proceedings:Electric Power Applications,2000,147(1):1-6.
• [15]禹华军,潘俊民(Yu Huajun,Pan Junmin).并网发电逆变系统孤岛检测新方法的研究(Study on newislanding detecting method for grid-connected powersystem)[J].电力系统及其自动化学报(Proceedingsof the CSU-EPSA),2005,17(5):55-59.