含分布式电源的配电网继电保护方案 .pdfVIP

学兔兔 第46卷第4期 煤 炭 工 程 Vo1．46．No．4 20l4年第4期 COAL ENGINEERING No．4，2014 doi：10．11799／ce201404033 含分布式电源的配电网继电保护方案 束长富，邵如平，仲 飞 (南京工业大学 自动化与电气1二程学院，江苏南京 21 1816) 摘 要：文章分析了分布式发电对保护范围、灵敏度以及自动重合闸装置的影响，并提出了 基于故障分量的自适应电流速断保护与BP人工神经网络相配合的方案。该方案利用故障电流序 分量识别故障类型，BP人工神经网络间接找出系统等效阻抗的变化规律，实现了自适应电流速 断保护的功能。最后，对一个10kV配电系统进行仿真，验证了保护方案的有效性。 关键词：分布式发电；配电网；故障分量；人工神经网络；自适应电流保护 中图分类号：TD61 文献标识码：B 文章编号：1671—0959(2014)04-0096—04 Relay Protecfion Scheme of Power Distribution System with Distributed Generations SHU Chang—fu，SHAO Ru—ping，ZHONG Fei (School ofAutomation and Electrical Engineering，Nanjing University ofTechnology，Nanjing 211816，China) Abstract：This paper analyzed the impact of distributed generation to protection range，sensitivity and automatic reclosing lock device，a self—adaptive instantaneous trip protection based on fault component combined with BP artificial neural network was proposed．The fault current sequence component was applied to identify the fault type and BP artificial neural network was applied to find the indirect changes of equivalent impedance system ，realizing the function of self—adaptive current fast—tripping protection．A simulation on a 10kV distribution system was conducted and the results verified the validity of the proposed scheme． Keywords：distributed generation；power distribution network；fault component；artificial neural network； self— adaptive current protection