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Reliability Evaluation of Distribution Network Based on Equivalent Network

Author: YangXueMei
Tutor: JiangJinLiang
School: South China University of Technology
Course: Proceedings of the
Keywords: Distribution network Reliability Assess Equivalent
CLC: TM732
Type: Master's thesis
Year: 2010
Downloads: 207
Quote: 1
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Abstract


Distribution system reliability is to improve and increase the power distribution system for the purpose of the capacity and quality of the power user . With the economic development and the increase of the load , the distribution network reliability problems in the production and management of the electricity sector is becoming more and more weight , reliability assessment has become a routine work in the planning and decision-making of the distribution network . This paper first describes the current situation and development trend of domestic and international distribution network reliability studies , and comprehensive analysis of the current is used with a the grid reliability assessment of a variety of methods , component reliability model appropriate simplification , given the original parameters of component reliability statistical methods . On the basis of comprehensive analysis and in-depth study of the equivalent of the literature of the law , the equivalent of network - based reliability assessment method , this method not only inherits the basic idea of the network equivalent , and key equivalents process links made ??important improvements . First proposed the concept of the minimum fault zone , to solve the problem of equivalent regions defined , and the establishment of a data structure of the network to the the minimum faulty area units , greatly reduced in comparison with conventional data structure of the node is stored in units of data storage work volume, and the units equivalent to the minimum fault zone , to avoid the elements individually enumeration , largely simplifies the network computing process . Minimum fault zone equivalent units , taking into account the capacity constraints and turn for the problem, we derive a complete set of reliability indices calculated based on the equivalent parameters . Meet the accuracy of the premise , the paper gives the operation conditions of the distribution network reliability assessment , and based on the equivalent network distribution network reliability assessment methods for the actual grid reliability assessment , verified by an example the efficiency and accuracy of the method . And reliability assessment methods to analyze the relationship between the local component reliability and overall system reliability and system reliability indicators quantify the various contact methods to find the weak link in the affect distribution network reliability and suggestions for improvement strategy . Finally, according to the actual characteristics of the distribution network , with higher operational management and technical measures .

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system scheduling, management, communication > The operation of the power system
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