An economic dispatching method of energy storage for delaying the upgrading and transformation of power distribution equipment

Abstract

The present invention is an energy storage economic scheduling method for delaying the upgrading and transformation of power distribution equipment, including: establishing a mathematical model of energy storage economic operation, establishing network constraints and energy storage system power and electricity constraints, designing energy storage economic scheduling control strategies, establishing Evaluation indicators and energy storage operation effect analysis. By comprehensively analyzing various load conditions in the distribution network, the energy storage action mode and method are determined accordingly. The present invention has significant effects on peak shaving and valley filling of the distribution network, delaying the upgrading of power distribution equipment, responding to different load conditions, adopting energy storage action methods in a targeted manner, and at the same time saving energy and being economical, and can solve faults such as preventing transformer overload and power reverse. , to ensure the safe and stable operation of the distribution network and energy storage system. It has the advantages of scientific and reasonable method, strong applicability and good effect.

Description

technical field [0001] The invention belongs to the field of distributed energy storage, and in particular relates to an energy storage economic dispatch method for delaying the upgrading and transformation of power distribution equipment, in particular to a method for using distributed energy storage to reduce the load peak-valley difference of a distribution network to meet the requirements of power distribution equipment Upgrading needs. Background technique [0002] With the depletion of fossil energy, electricity demand and environmental problems have become increasingly prominent. Electric vehicles EV (Electric Vehicles, EV), distributed generation (Distributed Generations, DG) have developed rapidly by virtue of their advantages of low energy consumption and no pollution. The charging behavior of large-scale EVs greatly increases the load peak. The traditional distribution network planning does not take into account the charging needs of large-scale EV access. The ex...

AI Technical Summary

Problems solved by technology

For the problem of transformer overload, the traditional measure is to increase the capacity of power distribution equipment, but there are problems of new equipment utilization and low return on investment

DG can effectively alleviate the power supply pressure caused by the access of EVs on the distribution network, but due to its intermittent nature, when its output is too large, the power may be reversed to the upper-level power grid, and the reversed power will make the distribution network local When overvoltage is generated, the corresponding transmission power loss will also be greatly increased, and the relay protection device of the upper-level power grid also needs to make greater adjustments

In order to reduce the adverse impact of DG on the power grid, the traditional measure is to reduce the output of DG, but this reduces the utilization rate of DG, thereby reducing the investment income of DG

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