分布式发电配电网新型充分式保护原理及方案Principle and Implementation of A Novel Sufficient Criterion Protection for Distribution Network With Distributed Generation
许偲轩;陆于平;章桢;陈玉伟;
摘要(Abstract):
提出了一种新型的分布式发电配电网保护判断策略—充分式保护策略。其有别于传统保护思想要求保护方案对任何理论上可能出现的故障均有绝对的选择性,只针对那些在绝大多数情况下更有可能发生的故障,提取具有充分代表性的故障特征。传统保护方法难以解决分布式电源接入后的配电网保护问题,只能牺牲分布式电源的效率或大幅提升保护成本;充分式保护原理则是针对所提取的普遍性故障特征利用简单有效的方法优先解决。因建立在故障特性之上,保护对故障的判断是充分且可靠的。具体针对分布式发电配电网,文章分析了故障电流幅值的特征,在此基础上提出了基于电流幅值的充分式保护方案,并给出了详细的保护的判断方法和逻辑框图。在模拟分布式发电配电网的仿真中证明了充分式保护思想的实用性以及方法的正确性。
关键词(KeyWords): 充分式保护;分布式发电配电网;故障特征;故障电流幅值;继电保护
基金项目(Foundation): 国家自然科学基金资助项目(51377022,50977012)~~
作者(Author): 许偲轩;陆于平;章桢;陈玉伟;
Email:
DOI: 10.13335/j.1000-3673.pst.2014.09.034
参考文献(References):
- [1]Q/GDW4820—2010,分布式电源接入电网技术规定[S].北京:国家电网公司,2010.
- [2]IEEE Std.1547 IEEE standard for interconnecting distributed resources with electric power systems[S].USA:IEEE Press,2003.
- [3]黄伟,雷金勇,夏翔,等.分布式电源对配电网相间短路保护的影响[J].电力系统自动化,2008,32(1):93-97.Huang Wei,Lei Jinyong,Xia Xiang,et al.Influence of distributed generation on phase-to-phase short circuit protection in distribution network[J].Automation of Electric Power Systems,2008,32(1):93-97(in Chinese).
- [4]吴争荣,王钢,李海峰,等.含分布式电源配电网的相间短路故障分析[J].中国电机工程学报,2013,33(1):130-136.Wu Zhengrong,Wang Gang,Li Haifeng,et al.Analysis on the distribution network with distributed generators under phase-to-phase short-circuit faults[J].Proceedings of the CSEE,2013,33(1):130-136(in Chinese).
- [5]康云龙,郭红霞,吴捷,等.分布式电源及其接入电力系统时若干研究课题综述[J].电网技术,2010,34(11):43-47.Kang Yunlong,Guo Hongxia,Wu Jie,et al.Characteristics of distributed generation system and related research issues caused by connecting it to power system[J].Power System Technology,2010,34(11):43-47(in Chinese).
- [6]周卫,张尧,夏成军,等.分布式发电对配电网继电保护的影响[J].电力系统保护与控制,2010,38(3):1-5.Zhou Wei,Zhang Yao,Xia Chengjun,et al.Effect of distributed generation on relay protection of distributed system[J].Power System Protection and Control,2010,38(3):1-5(in Chinese).
- [7]刘健,林涛,同向前,等.分布式光伏电源对配电网短路电流影响的仿真分析[J].电网技术,2013,37(8):2080-2085.Liu Jian,Lin Tao,Tong Xiangqian,et al.Simulation analysis on influences of distributed photovoltaic generation on short-circuit current in distribution network[J].Power System Technology,2013,37(8):2080-2085(in Chinese).
- [8]刘健,张小庆,同向前,等.含分布式电源配电网的故障定位[J].电力系统自动化,2013,37(2):1-8.Liu Jian,Zhang Xiaoqing,Tong Xiangqian,et al.Fault location for distribution systems with distributed generations[J].Automation of Electric Power Systems,2013,37(2):1-8(in Chinese).
- [9]林霞,陆于平,王联合.分布式发电条件下的多电源故障区域定位新方法[J].电工技术学报,2008,23(11):139-145.Lin Xia,Lu Yuping,Wang Lianhe.New fault region location scheme in distribution system with DGs[J].Transactions of China Electro Technical Society,2008,23(11):139-145(in Chinese).
- [10]林霞,陆于平,王联合.分布式发电条件下的新型电流保护方案[J].电力系统自动化,2008,32(20):50-56.Lin Xia,Lu Yuping,Wang Lianhe.New current protection scheme considering distributed generation impact[J].Automation of Electric Power Systems,2008,32(20):50-56(in Chinese).
- [11]焦在强.大规模风电接入的继电保护问题综述[J].电网技术,2012,36(7):195-201.Jiao Zaiqiang.A survey on relay protection for grid-connection of large-scale wind farm[J].Power System Technology,2012,36(7):195-201(in Chinese).
- [12]Brahma S M.Fault location in power distribution system with penetration of distributed generation[J].IEEE Transactions onPower Delivery,2011,26(3):1545-1553.
- [13]贾浩帅,郑涛,赵萍,等.基于故障区域搜索的配电网故障定位算法[J].电力系统自动化,2012,36(17):62-66.Jia Haoshuai,Zheng Tao,Zhao Ping,et al.Fault location algorithm for distribution system based on fault region searching[J].Automation of Electric Power Systems,2012,36(17):62-66(in Chinese).
- [14]马静,王希,米超,等.含分布式电源的配电网自适应保护新方法[J].电网技术,2011,35(10):204-208.Ma Jing,Wang Xi,Mi Chao,et al.A new adaptive protection approach for distribution network containing distributed generation[J].Power System Technology,2011,35(10):204-208(in Chinese).
- [15]Naiem A F,Hegazy Y,Abdelaziz A Y,et,al.A classification technique for recloser-fuse coordination in distribution systems with distributed generation power delivery[J].IEEE Transactions on Power Delivery,2012,27(1):176-185.
- [16]孙景钌,陈荣柱,蔡轼,等.含分布式电源配电网的故障定位新方案[J],电网技术,2013,37(6):1645-1650.Sun Jingliao,Chen Rongzhu,Cai Shi,et al.A new fault location scheme for distribution system with distributed generations[J].Power System Technology,2013,37(6):1645-1650(in Chinese).
- [17]孙景钌,李永丽,李盛伟,等.含分布式电源配电网保护方案[J].电力系统自动化,2009,33(1):81-89.Sun jingliao,Li Yongli,Li Shengwei,et al.A protection scheme for distribution system with distributed generations[J].Automation of Electric Power Systems,2009,33(1):81-89(in Chinese).
- [18]丛伟,潘贞存,王成山,等.含高渗透率DG的配电系统区域纵联保护方案[J].电力系统自动化,2009,33(10):81-85.Cong Wei,Pan Zhencun,Wang Chengshan,et al.A substation area longitudinal protection(salp)scheme for distribution system with high DG penetration[J].Automation of Electric Power Systems,2009,33(10):81-85(in Chinese).
- [19]何泓儒.分布式发电条件下配电网电流保护应用研究[D].广州:广东工业大学,2013.
- [20]陶顺,郭静,肖湘宁.基于电流保护原理的DG准入容量与并网位置分析[J].电网技术,2012,36(1):265-270.Tao Shun,Guo Jing,Xiao Xiangning.Analysis on allowed penetration level of distributed generation and its grid-connected position based on principles of current protection[J].Power System Technology,2012,36(1):265-270(in Chinese).