Planning method for active power distribution network comprising distributed photovoltaic grid-connected network

Abstract

The invention relates to a planning method for an active power distribution network comprising a distributed photovoltaic grid-connected network. The active power distribution network comprises the distributed photovoltaic grid-connected network. The planning method comprises the following steps: investigating and analyzing a planning area; determining a load peak under a photovoltaic peak clipping effect; determining an infrastructure planning result of the active power distribution network; determining a network frame structure extended by the active power distribution network; determining an optimal active control strategy of the active power distribution network; determining an optimal planning scheme. Aiming at the characteristic of the planning area, the distributed photovoltaic and active control strategies are introduced into a planning system of the power distribution network at a given photovoltaic penetration rate, so that the station establishment capacity and the network loss of a substation are greatly reduced, the investment of an electric power company is saved, distributed photovoltaic large-scale penetration is realized, and good economic benefit and social benefit are produced; the planning method is easy to master and operate, and beneficial reference is provided for planning of the power distribution network comprising the large-scale distributed photovoltaic network by power distribution network planning workers.

Description

technical field [0001] The invention relates to a method in the field of power grid planning, in particular to an active distribution network planning method including distributed photovoltaic grid connection. Background technique [0002] In the field of traditional power grid planning, planners predict the daily load curve of the planning level year. The daily load curve has two load peaks: daytime load peak and night load peak. Planners use the maximum load value of the two peaks to minimize investment costs For the goal, various optimization algorithms are used to determine the optimal planning scheme. This planning method based on maximum load often requires a large amount of investment, which not only increases investment risks, but also leads to low utilization of power equipment, seriously affecting the economic benefits of power companies. [0003] Distributed photovoltaics can effectively reduce daytime load peaks, and the greater the penetration, the better the r...

AI Technical Summary

Problems solved by technology

This planning method based on maximum load often requires a large amount of investment, which not only increases investment risks, but also leads to low utilization of power equipment, seriously affecting the economic benefits of power companies

[0003] Distributed photovoltaics can effectively reduce daytime load peaks, and the greater the penetration, the better the reduction effect, but distributed photovoltaics do not work on night load peaks. In order to ensure stable and reliable operation of the distribution network, even if there are distributed photovoltaics in the planning area, ordinary Distributed photovoltaics are not included in the planning system when planning the distribution network

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