Method and system for controlling capacity of transformer substations of initiative power distribution network

Abstract

The invention discloses a method and system for controlling the capacity of transformer substations of an initiative power distribution network. On one hand, the uncertainty of loads is considered, and the power distribution network dispatching participating degrees of the loads in total loads of the power distribution network are analyzed; on the other hand, contribution conditions of distributed energy resources in the power distribution network are considered, trusted contribution values of the distributed energy resources in the power distribution network are calculated, the total capacity of the transformer substations in the planned year is calculated according to the maximum load predicated value of the power distribution network and the trusted contribution values of the distributed energy resources in the power distribution network, and the capacity of the transformer substations of the power distribution network is further controlled according to the total capacity of the transformer substations in the planned year. In the whole process, the uncertainty of the loads and the contribution conditions of the distributed energy resources are sufficiently considered, the accuracy of the calculating result of the total capacity of the transformer substations in the planned year is guaranteed, the capacity of the transformer substations of the power distribution network can be accordingly and accurately controlled, and effective use of the resources and safe operation of the power distribution network are guaranteed.

Description

technical field

[0001] The invention relates to the technical field of power grids, in particular to a method and system for controlling substation capacity of an active distribution network. Background technique

[0002] With the continuous development of the economy and the increase of social demand for electricity, the maximum load utilization hours of the power grid continue to decline, and the peak load problem has become increasingly prominent, resulting in the emergence of new controllable loads such as interruptible loads. At the same time, in order to make full use of clean energy , the penetration rate of distributed power generation is also increasing, but the randomness, volatility, and uncontrollable characteristics of distributed power generation output make it impossible to treat it in the same way as conventional power generation units in power planning. The power system introduces the ability to actively coordinate and control distributed generation. That i...

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