含分布式PV的配电网功率方向纵联保护方案  

Research on power direction longitudinal protection scheme of distribution networks containing distributed photovoltaic systems

作　　者：鞠非[1] 樊若楠 

机构地区：[1]国家电网公司常州供电公司,江苏常州213017 [2]合肥工业大学电气与自动化工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2015年第10期1328-1332,共5页Journal of Hefei University of Technology：Natural Science

基　　金：江苏省电力公司科技资助项目(5210EF14001A)

摘　　要：随着太阳能应用技术的进步和国家政策扶持力度的加大,越来越多的分布式光伏电源并入配电网中,对原有的配电网保护造成了巨大的影响。文章通过分析光伏并网对配电网保护的影响,根据已有的解决方案,并结合光伏自身输出的周期性、随机性和间歇性,提出了一种引入电流量的功率方向纵联保护方案,对不同线路的保护进行了完善,并在PSCAD/EMTDC软件中进行了仿真验证。结果表明,该保护方案不受光伏运行方式的影响而可靠地进行保护动作,在实践中具有可行性。With the advancement of solar application technology and national policy support, more ana more photovoltaic（PV） systems are incorporated into distribution system, which leads to great effect on original distribution system protection. According to the existing solutions and the periodicity, randomness and intermittence of PV output, a power direction longitudinal protection scheme which introduces the current is proposed by analyzing the impact caused by grid-connected photovoltaic sys- tem on the distribution system protection. And the protection scheme of various lines is improved. The scheme is verified by PSCAD/EMTDC simulation. The results show that the protection scheme with simple principle can act reliably almost without the influence of PV operation mode, and has the feasibility in practice.

关 键 词：太阳能应用技术 分布式光伏 配电网保护 引入电流量 功率方向纵联保护 

分 类 号：TM712[电气工程—电力系统及自动化]