Power distribution network transmission loss apportionment method containing distributed power supply

Abstract

The invention discloses a power distribution network transmission loss apportionment method containing a distributed power supply. The method comprises a step of estimating transmission loss apportionment values of each load node and a DG node in a power distribution network based on a Shapley value sampling estimation method; the sample amount required for computing the Shapley value is reduced through a stratified sampling method; the fairness and rationality of the Shapley value apportionment method is reserved, the expected computation precision is guaranteed, the combinational explosion problem occurring in the Shapley value is overcome, and the computation time is reduced.

Description

technical field [0001] The invention relates to a method for allocating network losses of a distribution network including distributed power sources, belonging to the field of distribution network control. Background technique [0002] With the gradual establishment of my country's electricity market, the monopoly mode of vertical integration of the traditional power industry has been broken, and fair competition has become the basic principle of the electricity market. In this context, the allocation of public expenses has attracted great attention from all market members. Among them, network loss allocation is not only related to the economic interests of market members, but also can provide important economic signals for the grid. The power flow distribution of the system. Considering the nonlinear and inseparable relationship between distribution network loss and network power flow, how to fairly and reasonably allocate network loss to market members has become one of t...

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Problems solved by technology

However, with the gradual expansion of the scale of the apportionment problem, the combination explosion problem will appear in the Shapley value method, and the calculation amount will increase exponentially; in addition, some foreign scholars have proposed an Aumann-Shapley (Aumann- Shapley) value method is used to apportion the network loss of distribution network. This method meets the fairness requirements and can overcome the combined explosion problem. However, this method is affected by the subjectivity of the current decomposition method, so the calculation accuracy is not high.

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