摘要
为了提高阻抗计算的精度和实时性,提出了一种基于导数法计算阻抗的新算法。理论推理和仿真结果验证了该方法有利于降低运算精度对数字滤波器滤高频能力和采样频率的高度依赖,可实时计算阻抗,不存在延时,能减小实际应用中受扰动的影响程度。
A new algorithm for calculating impedance based on derivative method is proposed in order to improve the accuracy and real-time.Mathematical reasoning progress and the simulation results show that the proposed algorithm can reduce the accuracy highly dependent on the filtering the high frequency ability and sampling frequency, anditeanealculatetheimpedaneeno-delay, and can reduce the influencing extent of perturbation.
出处
《电网与清洁能源》
2009年第9期26-29,共4页
Power System and Clean Energy
关键词
导数法
继电器
微机保护算法
derivative method
relay
computer protection algorithm
