电力系统自动化2009，Vol.33Issue(14)：71-76,6.
含逆变型分布式电源配电网自适应电流速断保护
Study on Adaptive Current Instantaneous Trip Protection Scheme for Distribution Network with Inverter Interfaced DG
摘要
Abstract
The value setting of the traditional current protection has become very difficult for the distribution system with distributed generators (DGs) owing to the randomness of the DG output power, especially the inverter interfaced DG (IIDG).Based on a fault characteristic analysis of the distribution system with IIDG and the traditional adaptive current instantaneous trip protection scheme, the adaptive current instantaneous trip protection scheme for the distribution system with IIDG is studied to solve this problem. The results show that the value of the relay whose dorsal side is connected to IIDG can still be set according to the form of the traditional scheme, with some parameters defined anew. This scheme can still automatically calculate the settings according to the current operation mode and the output power of IIDG with no need for communication.Compared with the traditional current instantaneous trip protection scheme, the protection performance is greatly improved.Simulation results on a 10 kV distribution system have verified the validity of the scheme proposed.关键词
分布式电源/逆变型分布式电源/配电网/自适应电流保护Key words
distributed generation (DG) / inverter interfaced DG (IIDG) / distribution network/ adaptive current protection分类
信息技术与安全科学引用本文复制引用
孙景钌,李永丽,李盛伟,金强..含逆变型分布式电源配电网自适应电流速断保护[J].电力系统自动化,2009,33(14):71-76,6.基金项目
国家高技术研究发展计划(863计划)资助项目(2007 A_A052241) （863计划）
国家重点基础研究发展计划(973计划)资助项目(2009CB219704) （973计划）
天津市自然科学基金资助项目(08JCYBJC13500). （08JCYBJC13500）
