An Optimal Planning Method for Main Transformer Connection Structure of Distribution Network Considering mpsc and MCCC

Abstract

The invention discloses a power distribution network main transformer connection structure optimization planning method taking maximum power supply capability and minimum connection construction cost into account. The method is characterized by comprising establishment of a connection structure optimization model, solving of the connection structure optimization model, section of an optimal solution and the like. According to the method, overall consideration is given to the maximum power supply capability and investment costs, a main transformer connection structure optimization model is built while a feed line interconnection matrix is used as decision variable, a medium voltage power distribution network connection structure optimization method taking geography factors into account is put forward, effects exerted on a connection structure by geographic environment is demonstrated, and connection relations among all feed lines are shown; the method is advantaged by scientific and reasonable properties, strong applicability, good effect and the like.

Description

technical field [0001] The invention relates to the field of distribution network planning in an electric power system, and relates to an optimization planning method for the main transformer connection structure of a distribution network considering MPSC and MCCC. Background technique [0002] With the rapid development of urban economy, the increasing shortage of urban land makes the selection of substation site and power channel corridor very difficult. Since the tie line is used as a channel for power supply restoration and load transfer, less resources can be used to enlarge the substation station. Inter-load transfer capacity, improve equipment utilization, and realize the reduction of construction scale and land resource consumption while meeting the power supply demand of various user loads at all levels. Therefore, the optimization of the main transformer connection structure has become the choice of distribution network operation mode and grid structure. Important ...

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Problems solved by technology

However, the above-mentioned methods only use the main transformer interconnection matrix as a decision variable to study the optimization of the communication channel and the communication scale between the main transformers. As a physical concept, the communication channel is a collection of contact branches between the main transformers. It does not include the specific number of outgoing lines, and the obtained planning results cannot indicate the number and location of the contact branches in the channel, and cannot guide the contact relationship between specific feeders. factors

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