【摘要】 地方小电厂单机容量小 ,机组的运行特性和稳定性较差 ,影响了其上网线路继电保护装置的配置和整定 ,如按常规方法对线路进行保护配置和整定 ,当系统发生故障 ,容易导致故障线路与电厂之间变电站的失压 ,损失负荷。为此 ,通过分析故障实例 ,提出优化地方小电厂上网线路继电保护的配置和整定方法 ,以减少事故的发生和由此造成的经济损失 ,从而提高系统的供电可靠性。更多还原

【Abstract】 Owing to small singleunit capacity and poorer unit performance and stability of local minipower plants,a system fault may easily give rise to loss of voltage and load in the substation between the faulted line and the mini plant when the protection for its line to grid is conventionally configurated and set.This paper offers case studies and proposes methods for optimizing the said configuration and setting,thus minimizing failures and economic losses and improving the reliability of power supply.更多还原