变电站继电保护设备地调定值参数自动校准方法

Design of the Automatic Calibration System for the Ground Setting Value of the Substation Relay Protection

继电保护是保证电力系统稳定运行的关键,需要具有良好的适应性。当变电站发生故障时,继电保护装置需快速做出反应,以保证电力元件的安全运行,因此需研究变电站继电保护设备地调定值参数自动校准方法。引用分解理论建立参数矩阵,以有向图形式分割调定值参数区间。基于深度搜索对装置进行递归访问,在相邻节点的数据结构中,自动校准继电保护设备参数,完成方法设计。以某省实际运行的变电站为测试对象分别对两组不同的继电保护装置进行参数校准,实验所提方法能在5 min内完成较大电力参数的校准,且误差不超过0.25 V,具有实际应用价值。

Relay protection is the key to ensuring the stable operation of the power system and needs to have good adaptability.When a substation fails,the relay protection device needs to react quickly to ensure the safe operation of the power components.Therefore,it is necessary to study the automatic calibration method of the ground fixed value parameters of the substation relay protection equipment.The decomposition theory is used to establish the parameter matrix,and the parameter interval of the fixed value is divided in the form of a directed graph.Recursive access is performed on the device based on deep search.In the data structure of adjacent nodes,the parameters of the relay protection equipment are automatically calibrated to complete the method design.The experimental results show that the parameters of two different sets of relay protection devices are calibrated with the actual substation operating in a certain province as the test object.The proposed method can complete the calibration of large power parameters within 5 min with an error of no more than 0.25 V,which has practical application.