一种串补阻尼保护算法研究及应用分析

A Kind of String Complement Damping Protection Algorithm Research and Application Analysis

在基于阻尼回路故障情况和串阻尼回路运行理论分析的基础上,推导了阻尼回路在各种工况下回路放电电流的数学表达式,搭建了玉林串补阻尼回路仿真模型。以玉林串补阻尼回路为仿真分析对象,分析了包络线分析法和特征频率分析法在串补阻尼回路正常运行状态、阻尼电阻故障、阻尼电抗故障等各类工况下的应用情况,便于工程人员直接、快速地了解电抗器的损坏程度,有效地识别串补阻尼回路故障。

Based on the theoretical analysis of damping circuit failure and string damping circuit operation,the mathematical expressions of circuit discharge current in various operating conditions of damping circuit are derived theoretically.A simulation model of the damping circuit with"Yulin series complement"is built.In this paper,we analyze two kinds of damping circuit damping protection algorithms,such as envelope analysis method and characteristic frequency analysis method,and analyze the damping circuit in normal operation and"damping resistance fault"and"damping reactance fault".The operating response under various conditions such as"damped reactor fault"and"damped reactor fault",which facilitates the engineers to understand the damage of reactor directly and quickly,and to identify the series damping circuit fault effectively.