摘要
针对分布式电源的接入将影响配电网短路电流和继电保护整定等问题,提出基于自适应算法的含分布式电源配电网继电保护方法,该方法将分布式电源戴维南模型接入配电网的不同位置,对含分布式电源的配电网进行等效建模。根据仿真模型的故障分析表明:当接入点在保护装置上游或相邻母线时,整定值随着接入位置越近、容量的增加而增加;接入点在保护装置下游时,该段线路按双侧电源方式整定保护装置;故障类型会影响整定值的大小。
Aiming at the great impact of distributed generations（DG） connected to distribution network on short circuit current and relay protection, a method for relay protection of distribution network containing DGs is presented based on adaptive algorithm. The equivalent models of distribution network, which connects DG＇s Thevenin model at different positions respectively, are established. The failure analysis results of distribution network simulation model with DG show that the setting value of the relay protection will increase with the increase of DG capacity and the decrease of distance to DG accessing position when the position of accessing node is in the upstream of the protection device or in the adjacent bus of the protection device. When the position of accessing node is in the downstream of the protection device, the relay protection scheme of this line is set as the double ended source system＇s mode. The fault types will affect the size of the setting value.
出处
《可再生能源》
CAS
北大核心
2015年第9期1329-1336,共8页
Renewable Energy Resources
基金
国家自然科学基金(51467021)
新疆维吾尔自治区高等学校科研计划项目(XJEDU2012I15)
新疆农业大学前期资助课题资助(XJAU201307)
关键词
分布式电源
自适应算法
短路电流
配电网
distributed generation
the adaptive algorithm
short circuit current
the distribution network
