Decision method for optimizing objective net support structure of medium-voltage distribution network based on reliability program

Abstract

The invention relates to a decision method for optimizing an objective net support structure of a medium-voltage distribution network based on a reliability program. The method comprises the following steps of: actually analyzing a current situation distribution network to obtain a current situation typical net support structure, and performing reliability quantitative evaluation on the current situation typical net support structure; determining an alternative objective net support structure meeting a reliability requirement by using a reliability-based distribution network planning method and a reliability assessment method by drawing lessons from advanced experiences of distribution network net support structure at home and abroad; providing a transition program and the optimal reconstruction time for reconstructing the current situation net support to an objective net support; and finally, performing investment estimation and power distribution reliability cost / benefit analysis on a reconstruction program to obtain the objective net support structure which satisfies a reliability goal and has the optimized economical efficiency. For distribution network planners, the problems in three aspects of reliability goal setting, reliability-based distribution network planning and objective net support structure can be solved by using the method. By using the method, under reasonable investments, the expectant reliability level is achieved, and wasted investments are avoided.

Description

technical field [0001] The invention relates to a decision-making method in the field of power grid planning and construction, in particular to a decision-making method for optimizing a target grid structure of a medium-voltage distribution network based on reliability planning. Background technique [0002] The distribution network directly faces customers, not only undertaking the mission of fulfilling social responsibilities, but also related to the economic benefits of enterprises. The foundation of my country's distribution network is weak. In history, the medium and low voltage distribution network was basically built according to the needs of users, and was greatly influenced by investors. Its grid structure and power supply reliability have always lacked standardized management and specific analysis. At present, each region has consciously formed a grid structure suitable for its own grid development needs based on the actual situation of its own grid development and...

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Problems solved by technology

[0018] Aiming at the existing problems and shortcomings of the existing distribution network planning method, the present invention provides a method for optimizing the target grid structure of the medium-voltage distribution network based on reliability planning based on the reality of the regional distribution network, which successfully solves the problem of In the traditional distribution network planning, the disadvantages of not being able to effectively reduce costs and ensuring system reliability when the equipment load rate is higher than the normal level, guide each power company to plan the target grid structure of the medium-voltage distribution network suitable for itself, and according to its own Carry out the construction and transformation of the distribution network in order to make it reach the expected reliability level with reasonable investment and avoid investment waste

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