一种基于半波积分的电流幅值算法

华电技术 ›› 2015, Vol. 37 ›› Issue (11): 5-8.

一种基于半波积分的电流幅值算法

国电南京自动化股份有限公司，南京２１００６１

出版日期:2015-11-25

A current amplitude algorithm based on half wave integration

Guodian Nanjing Automation Company Limited,Nanjing 210061,China

Published:2015-11-25

摘要/Abstract

摘要：

摘要：次同步过流保护是抽水蓄能机组在变频启动过程中必须设置的保护，针对天堂抽水蓄能电站机组变频启动过程中传统次同步过流保护时有误动的问题，提出了一种基于半波积分计算的频率无关算法。实例证明，该算法的精度不受频率变化影响，频率适应范围宽，谐波影响小。

关键词: 关键词：抽水蓄能机组, 变频启动, 次同步过流, 半波积分, 频率无关算法

Abstract:

Abstract:Subsynchronous over current protection is necessary for the protection of pumped storage unit in the process of variable frequency starting.For the mal operation problem of subsynchronous over current protection in the process of variable frequency starting for Tiantang pumped storage power plant,this paper proposed a frequency independent algorithm based on half wave integration,and practical example proved that the accuracy of this algorithm is not affected by frequency.This algorithm has the advantages of wide frequency adaptation range and small harmonic wave influence.

Key words: ">Keywords:">pumped storage unit, variable frequency starting, subsynchronous over ">current protection, half ">wave integration, frequency independent algorithm

刘小波，刘万斌，丁俊健，胡恩俊. 一种基于半波积分的电流幅值算法[J]. 华电技术, 2015, 37(11): 5-8.

LIU Xiaobo,LIU Wanbin,DING Junjian,HU Enjun. A current amplitude algorithm based on half wave integration[J]. Huadian Technology, 2015, 37(11): 5-8.