微电网继电保护的研究与应用  

Application research of micro-grid relay protection

作　　者：郭建勇[1] 李瑞生 李献伟 杨红培 

机构地区：[1]国家电网公司,北京100031 [2]许继电气股份有限公司,河南许昌461000 [3]许昌电气职业学院,河南许昌461000

出　　处：《电力系统保护与控制》2014年第10期135-140,共6页Power System Protection and Control

摘　　要：为了解决分布式电源接入电网产生的随机性及波动性,以及对配电网继电保护和低压配电保护的影响,分析了微电网接入对配电网一次设备的要求,提出基于区域差动保护的配电网保护解决方案以及基于正反方向阻抗的低压配电保护解决方案。通过实际的工程实践证明,区域差动保护很好地解决了微电网接入对常规配电网多电源以及重合闸等保护的影响,正反方向阻抗的低压配电保护很好地解决了分布式电源接入低压配电网带来的影响。The micro-grid is an effective way to solve the uncontrolled and stochastic volatility of distributed generation connected to the grid, this paper analyzes the impact of distribution relay protection from micro-grid access. We put forward the requirements for primary equipment of distribution network, distribution network protection solution based on regional differential protection, and low-voltage distribution protection solution based on the positive and negative direction impedance. Actual project proved that regional differential protection better solves the impact of conventional distribution network multi sources protection and reclosure protection from micro-grid access, and positive and negative direction impedance relay solves the impact of low-voltage distribution network protection from distribution generation access.

关 键 词：微电网 分布式发电 继电保护 区域差动保护 正反方向阻抗继电器 

分 类 号：TM773[电气工程—电力系统及自动化]