Title :
Development and application of reliability analysis system for medium and high voltage distribution networks
Author :
Zhang, Hongyun ; Bi, Pengxiang ; Zhong, Xiaojun ; Jin, Qing
Author_Institution :
Shaanxi Electr. Power Co., Xi´´an
Abstract :
In order to identify the bottleneck weaknesses of a distribution network so as to improve service reliability of the network by effective upgrading, we developed the power flow calculation based reliability analysis software for high-voltage distribution networks and the fault pervasion algorithm based reliability analysis system for medium-voltage distribution networks. Taking into account multiple factors, including line failure rate, repair time, isolation operation time and switching operation time, the system software can calculate the reliability indices and static security indices of node, feeder and system, and analyze the effect of reliability parameter variation, the influence of component reliability, the sensitivity to component reliability, and the bottleneck weaknesses of distribution networks. Actual application of the systems in calculation and analysis of power flow and reliability of Xi´an and other three regional medium and high voltage distribution networks manifested the bottleneck weaknesses of the networks, and found out various existing problems in reliability management. After effective measures are taken, good social and economic benefits were achieved.
Keywords :
load flow; power distribution faults; power distribution reliability; power engineering computing; power system security; socio-economic effects; Xian; fault pervasion algorithm; high-voltage distribution networks; medium-voltage distribution networks; power flow calculation; reliability analysis software; social-economic benefits; static security indices; Algorithm design and analysis; Application software; Failure analysis; Fault diagnosis; Load flow; Medium voltage; Power system reliability; Power system security; Software algorithms; System software;
Conference_Titel :
Electric Utility Deregulation and Restructuring and Power Technologies, 2008. DRPT 2008. Third International Conference on
Conference_Location :
Nanjuing
Print_ISBN :
978-7-900714-13-8
Electronic_ISBN :
978-7-900714-13-8
DOI :
10.1109/DRPT.2008.4523541