Two-level optimized dispatching method for price type flexible load

Abstract

The invention provides a two-level optimized dispatching method for price type flexible load. The two-level optimized dispatching method comprises the following steps: (1) analyzing interactive response and interactive cost for the price type flexible load; (2) establishing a two-level optimized dispatching model for price type flexible load, wherein the upper layer is of a price type flexible load dispatching module based on global optimization and the lower layer is of a multi-object multi-target model for flexible load; (3) converting an expected value of a flexible load response amount probability model; and (4) solving a two-level optimizing problem based on a genetic algorithm of a penalty function. According to the two-level optimized dispatching method disclosed by the invention, the maximized social benefits are realized with the purpose of reducing the power grid dispatching cost, the flexible load satisfaction degree is used as a constraint of the upper-layer power grid dispatching layer in a maximized manner, the flexible load is guided to participate in power grid dispatching operation in a facilitated manner, and the win-win aim of the power grid company and a flexible load individual or a load aggregator is realized.

Description

technical field [0001] The invention relates to an optimal scheduling method, in particular to a double-layer optimal scheduling method for price-type flexible loads. Background technique [0002] The continuous growth of power peak load and the rapid development of intermittent energy sources have increased the difficulty of power grid dispatching and operation, posing new major challenges to power system regulation capabilities. As a supplement to power generation scheduling, the dispatchable characteristics of flexible loads, in which part of the electricity consumption can be changed within a specified interval or transferred between different time periods, have attracted the attention of scholars at home and abroad. Mechanisms for flexible loads to participate in power grid dispatch include responding to electricity prices, contracting with power grid companies, or participating in demand-side bidding. Flexible load scheduling can cut peaks and fill valleys, balance int...

AI Technical Summary

Problems solved by technology

However, due to the autonomy of user behavior, there is often a certain degree of uncertainty in its actual response behavior, especially under the mechanism of responding to electricity prices, the uncertainty is higher

In addition, there is a certain mutual influence between user response and the formulation of dynamic electricity prices. When the electricity price is too low, it may cause the grid company to dispatch load through the electricity price mechanism. When the electricity price is too high, it will easily cause the dissatisfaction of participating users, resulting in low satisfaction of demand-side resources, affecting the normal electricity consumption behavior of users

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