Microgrid multi-time scale self-adaption energy dispatching method under source-grid-load interaction mode

Abstract

The invention discloses a microgrid multi-time scale self-adaption energy dispatching method under a source-grid-load interaction mode. The invention starts from the aspect of microgrid multi-time scale optimal management, and provides a self-adaption energy management method comprising basic day conventional dispatching and control day rolling dispatching. According to the method, labor is contributed for an energy storage device and a diesel generator according to a global object function and a global constraint condition, active power consumption of power and controllable and respectable load interactive with a large power grid is optimized, and the magnitude of the contributed labor can be predicted according to wind power and photovoltaic power generation systems, self-adaption adjustment for energy storage SOC penalty factors and control day rolling optimization time duration is realized, the influence of the error of the contributed labor predicted by the wind power and photovoltaic power generation systems on microgrid energy management is reduced, and economic and environmentally-friendly coordinated operation of a microgrid is realized.

Description

technical field [0001] The invention relates to a multi-time-scale self-adaptive energy scheduling method for a microgrid under a source-grid-load interaction mode, and belongs to the technical field of microgrid energy management. Background technique [0002] Microgrid is a new power supply mode composed of distributed power supply, energy storage device, load and control device. Microgrid can effectively utilize clean and renewable energy such as wind energy, solar energy, and biomass energy, and solve the contradiction between large power grids and distributed power sources. And in case of an accident, the robustness and emergency response capability of the system can be improved, and the quality of electric energy can be improved at the same time. The goal of microgrid energy management is to meet the power supply demand of users in real time and accurately at the lowest operating cost on the basis of stable operation of the power grid, not only to ensure the quality o...

AI Technical Summary

Problems solved by technology

[0003] However, due to the uncontrollability and intermittent nature of renewable energy, the diversity of distributed power sources and load types, and the complexity of microgrid operation, the energy optimization management of microgrid becomes more and more complicated.

Represented by multi-time-scale energy management methods, the existing multi-time-scale microgrid energy management models lack effective configuration mechanisms for day-ahead long-term planning and intraday real-time scheduling

Moreover, due to the uncertainty of renewable energy output, the prediction accuracy is affected, and accurate and rapid microgrid energy management cannot be realized.

Images