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基于R-L模型算法的距离保护研究与PSCAD仿真
引用本文:陈明,张涛.基于R-L模型算法的距离保护研究与PSCAD仿真[J].电力学报,2010,25(2):167-170.
作者姓名:陈明  张涛
作者单位:1. 武汉理工大学自动化学院,武汉,430070
2. 武汉大学电气工程学院,武汉,430072
摘    要:距离保护的关键是短路阻抗的计算,R-L模型算法不受电网变化频率的影响,且不需要用滤波器滤除非周期分量,所需时间窗短,故R-L模型可提供准确、可靠的阻抗信息以满足距离保护选择性和可靠性的要求。对R-L模型算法的原理及优缺点进行了分析,并利用PSCAD进行详细的仿真。仿真结果验证,基于R-L模型算法的距离保护元件快速可靠动作,说明了R-L模型算法的实用性。

关 键 词:距离保护  R-L模型算法  PSCAD  仿真

Study of Distance Protection Based on R-L Model Algorithm and Its Simulation in PSCAD
CHEN Ming,ZHANG Tao.Study of Distance Protection Based on R-L Model Algorithm and Its Simulation in PSCAD[J].Journal of Electric Power,2010,25(2):167-170.
Authors:CHEN Ming  ZHANG Tao
Affiliation:CHEN Ming,ZHNAG Tao(1.School of Automation,Wuhan University of Technology,Wuhan 430070,China;2.School of Electrical Engineering,Wuhan University,Wuhan 430072,China)
Abstract:Short-circuit impedance calculation is the key point of distance protection studying.The R-L model algorithm,which do not affected by the changing frequency of power grid,has a shorter time window and no need for aperiodic component filtration.So it can provide accurate and reliable impedance information to meet the selectivity and reliability requirements of distance protection.This paper gives the principle of the R-L model algorithm and an analysis of its advantages and disadvantages.A simulation result accomplished by PSCAD demonstrates the utility of the R-L model algorithm.
Keywords:PSCAD
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