THE ERROR MINIMIZATION OF DIGITAL FOURIER FILTER USED IN UNIPROCESSOR PROTECTIVE RELAYING FOR 6-33 kV ELECTRICAL NETWORKS

摘要

In this paper, a new method for error minimization of digital Fourier filter is proposed. The proposed method is tested by operating the electrical networks at oscillatory fre-quency. The functional features of microprocessor protective relaying and automatic switching devices are considered. The software structure of uniprocessor protective relaying and automatic switching equipments for the 6 - 33 kV lines are also presented.