Medium voltage distribution network reliability evaluation method based on regional level lead flow channel
A reliability and distribution network technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of low accuracy and time-consuming, and achieve the effect of simple calculation and high evaluation accuracy
Active Publication Date: 2014-01-08
YUN NAN ELECTRIC TEST & RES INST GRP CO LTD ELECTRIC INST +1
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The feature of this method is that it is very flexible, not limited by the scale of the system, and can give the probability distribution of the reliability index, but it is time-consuming and the accuracy is not high
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[0019] The present invention is a method for evaluating the reliability of a medium-voltage distribution network based on hierarchical regional power flow channels, and its specific implementation method is as follows:
[0020] 1) Through the synchronous interface, collect relevant data in the distribution network GIS system, and initialize the network information of the medium voltage distribution network: substation information, line information, switch information, load information;
[0021] 2) Through the power supply reliability information management platform (the national unified power supply reliability information system), use the historical data of the last 3 years to initialize the wires (bare wires, insulated wires, cables, etc.), distribution transformers, circuit breakers, and isolating switches , fuses and other basic component unit basic information, mainly including the average failure rate, the average failure repair time, and the operating life of basic compo...
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The invention discloses a medium voltage distribution network reliability evaluation method based on a regional level lead flow channel. A first layer of region division is carried out through a breaker, a disconnecting switch, an interconnection switch and other elements reflecting power supply features and power supply shifting features according to the power supply features and the power supply shifting features of the power distribution network, parenting subregions are formed, a lead flow channel table is formed for each parenting subregion with the passed breaker, disconnecting switch and interconnection switch as nodes according to the power supply path of the power supply of each parenting subregion, and therefore the failure consequence type of each parenting subregion is determined. For each parenting subregion, a second-level subregion of each parenting subregion is formed with a fuse as a demarcation point. According to the connecting relation of the second-level subregions and the lead flow channel tables of the parenting subregions, the reliability indexes of the parenting subregions and the load points of the parenting subregions are evaluated, the power supply reliability indexes of all the parenting subregions are synthesized to form the power supply reliability index of the power distribution network, and the power supply reliability evaluation of the power distribution network is achieved.
Description
technical field [0001] The invention belongs to the category of power supply reliability evaluation of a medium-voltage distribution network. Background technique [0002] With the development of the national economy, the scale of the distribution network is getting larger and its structure is becoming more and more complex, and the requirements of power users for the reliability of power supply are also getting higher and higher. For power supply enterprises, finding the weak links in the distribution network and maximizing the reliability of power supply in the distribution network with limited funds are major problems they face. At the same time, in the daily operation and management of the distribution network, by evaluating the reliability level of the distribution network, the overhaul and technical transformation of the distribution network can be effectively formulated, and the improvement of the reliability management level of power supply can be promoted, which has...
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Inventor 黄绪勇陈娟孙鹏杨清张建刘宗兵王芬
Owner YUN NAN ELECTRIC TEST & RES INST GRP CO LTD ELECTRIC INST