基于小波算法的大型水轮发电机继电保护整定计算  

Relay Protection Setting Calculation of Large Hydro Generator Based on Wavelet Algorithm

作　　者：詹庐山 ZHAN Lushan(Guangxi Liuzhou Guding Hydropower Co.,Ltd.,Liuzhou 545300,China)

机构地区：[1]广西柳州市古顶水电有限公司,广西柳州545300

出　　处：《通信电源技术》2023年第5期13-15,19,共4页Telecom Power Technology

摘　　要：继电保护整定是大型水轮发电机配置工作中的重要环节,整定值不合理会导致继电保护误动或拒动,为保证继电保护效果,提出基于小波算法的大型水轮发电机继电保护整定计算方法。考虑大型水轮发电机的组成结构,构建等效模型。获取发电机短路电流、负载电流等运行数据,利用小波算法技术处理初始数据,识别发电机的继电保护类型,针对不同继电保护类型得出相关参数的整定计算结果。通过与传统整定计算方法的对比,优化设计方法的电流与动作时间整定误差分别降低了8.0 A和5.05 s。Relay protection setting is an important link in the configuration of large hydro generators.Unreasonable setting values will lead to relay protection maloperation or failure to operate.In order to ensure the effect of relay protection,a wavelet based relay protection setting calculation method for large hydro generators is proposed.Considering the composition and structure of large hydro generators,an equivalent model is built.Obtain the generator short-circuit current,load current and other operating data,use wavelet algorithm technology to process the initial data,identify the type of generator relay protection,and obtain the setting calculation results of relevant parameters for different types of relay protection.By comparing with the traditional setting calculation method,it is concluded that the current and action time setting errors of the optimized design method are reduced by 8.0 A and 5.05 s respectively.

关 键 词：小波算法 大型水轮发电机 继电保护 整定计算 

分 类 号：TM77[电气工程—电力系统及自动化]