Planning method for interactive high voltage distribution network based on local optimization goal

Abstract

The invention discloses a planning method for interactive high voltage distribution network based on local optimization goal determining initial topologic connection relationship among the transformer substations in each partition and with superior power supply point; establishing expert experience database of high voltage distribution network in typical wiring way;screening the wiring way suitable for the area to be optimized and combining the initial connection network obtain in step I and expert experience database to obtain the initial network frame scheme integration; building scheme evaluation system and using such system to determine the target network frame in the planned area; according to prospect target network frame results,determining transition network frame and construction standards, and utilizing the target network frame obtained from optimization of transition network frame and construction standards to obtain the high voltage distribution network frame in the area to be planned finally. The method can effectively improve the level of each local optimization result, introduce actual expert experience and mature rules into each optimization target, realize the interactive processing ideas and reduce the influence of uncertain factors in the course of planning to the greatest extent.

Description

technical field [0001] The invention relates to the field of distribution network planning, in particular to an interactive high-voltage distribution network planning method based on local optimization targets. Background technique [0002] The basic goal of high-voltage distribution network planning is to ensure the safety and reliability of power supply through reasonable selection of wiring methods and equipment models on the basis of known planning level annual load forecasting and power supply planning, combined with the existing network structure and parameters. Under the premise, the construction and operation costs of the power grid are minimized. [0003] At present, the planning and research ideas for the high-voltage distribution network are usually divided into two types. One is to combine the existing load forecast and the actual situation of the power grid to be planned, and determine the line channel planning and connection mode selection of the high-voltage d...

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Problems solved by technology

[0004] When adopting the first planning method above, that is, mainly relying on actual engineering experience to plan the high-voltage distribution network, the result is greatly affected by the level of planners, and it is often difficult to obtain the optimal mathematical solution.

The planning problem of high-voltage distribution network is a multi-objective, multi-constraint semi-structural optimization problem. There are connections between each goal and they are independent, and have complex coupling relationships. When processing based on a single comprehensive optimization model, the above-mentioned The second type of optimization method needs to simplify the part of the actual planning that is difficult to describe with a mathematical model, and then optimize the solution. Due to the simplification in the optimization model and the difficulty in effectively dealing with the uncertain factors in the planning, the optimization results are often difficult. Meet actual planning requirements

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