A grid-based overall planning method for distribution network

Abstract

The invention discloses a power distribution network gridding overall planning method. The method comprises the steps of 1, power distribution network diagnosis and analysis based on a 'net rack, operation and equipment' three-dimensional index system; Step 2, load prediction and transformer substation planning optimization; Step 3, carrying out hierarchical partitioning on the distribution network and carrying out feature coding; 4, power distribution network scheme planning based on the far and near combination concept; Step 5, investment estimation and scheme evaluation; The problems that in the prior art, the manual intervention amount is large, division is extensive, and the power grid operation and maintenance difficulty cannot be effectively reduced when planning and division are conducted on the power distribution network are solved.

Description

technical field [0001] The invention relates to a method for planning a distribution network of medium and high voltages, in particular to a grid-based overall planning method for a distribution network. Background technique [0002] The urban distribution network is huge but relatively weak. Some substations in the central urban area cannot be built on the ground, and some rural areas also have weak power grids such as long power supply radius. When the load peak comes, the local power grid has reached the limit that it can bear. At the same time, during the peak power generation period, it also faces serious problems such as abandoning wind, abandoning light and water, and causing excessive fluctuations in terminal voltage; [0003] Through the planning and division of the distribution network, carry out high-level distribution network planning work to improve enterprise efficiency and reduce inefficient and ineffective investment; adapt to the gradual improvement of the r...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a distribution network grid-based overall planning method to solve the problem that the power grid division method in the prior art is relatively extensive and the amount of human intervention is large, which easily leads to different planning by different planners The "thousands of people and thousands of faces" of the scheme; the splicing of small grids lacks the concept of overall planning, and it is easy to fall into the dilemma of seeking local optimum; there is the problem of uncoordinated distribution network planning, which leads to local "stuck necks" and affects the overall load transfer capacity of the power grid

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