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Research on Fault Element Location Method in Power System Based on Cluster Analysis

Author: HuZuo
Tutor: WangZengPing
School: North China Electric Power University (Beijing)
Course: Proceedings of the
Keywords: Fault element positioning Cluster analysis Voltage fault component Wide area differential protection
CLC: TM771
Type: Master's thesis
Year: 2010
Downloads: 93
Quote: 1
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Abstract


Failure of the power system components , timely and accurately locate the fault point location and rapid removal of faulty and repair , which can effectively improve the security and reliability of the power grid operation . The introduction of wide area measurement which can be achieved through a comprehensive judgment on the entire area of real-time information to quickly locate the fault and the fault components , narrow down the scope and improve the performance of relay protection and other purposes . This paper presents a power system fault element positioning algorithm based on cluster analysis . Using cluster analysis method , combined with the tools of graph theory , the system is divided into a number of protected areas . The threshold adjustment clustering analysis can control the size of the protected area . Judged according to the principles of the WAN current ( power ) differential protection fault exists in the region , and gradually narrow the scope of protected areas , and ultimately locked fault element position . Initial positioning system for multi-node system , based on the principle of voltage fault component , greatly improves the speed of the fault location . Finally, using simulation the PSCAD software for influencing factors in the fault element positioning algorithm .

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