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Short-window Algorithm of Microprocessor-based Protection

Author: ChenHongYan
Tutor: ZhangYanXia
School: Tianjin University
Course: Proceedings of the
Keywords: Window function Digital filter Microcomputer Protection Short data window algorithm
CLC: TM77
Type: Master's thesis
Year: 2007
Downloads: 153
Quote: 0
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Abstract


Charged with the important task to transmit power to the high-voltage overhead transmission lines , at the same time , it is also a place of system failure . The safe and reliable operation of the high voltage transmission lines play a decisive role for the safe and reliable operation of the whole power system , it is a very high performance and reliability requirements of high-voltage transmission line relay protection . Therefore, after a line fault quickly accurate resection of failure , not only of timely repair lines and ensure reliable power supply , and on the security, stability and economic operation of the power system has a very important significance . The line distributed parameter model - based short-circuit transition process , analyze the various components may be produced on Protection ; summarizes the strengths and weaknesses of the existing computer protection digital filtering algorithm . Subsequently, the design method of finite impulse response digital filter (FIR) , and the main window function method , Cathay window filtering plus half-wave Fourier algorithm of short data window . ATP simulation results show that : the algorithm has a fast response time and good filtering effect characteristics , used in high-voltage transmission line , can greatly improve the performance of protected action .

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system protection
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