A microgrid system and its control and power generation forecasting method

Abstract

A microgrid system and its control and power generation forecasting method. The microgrid system includes a renewable energy power generation system, an energy storage system, a user load system, a diesel unit and a control system. The user load system divides the load into controllable load and uncontrollable load. The controllable load can predict the trend and count the peak and valley power of the load. The controllable load can be cut off in the event of an accident or when the output of renewable energy is insufficient. Energy storage is carried out during the period of time, and discharge is carried out during the peak period of electricity price. The photovoltaic power generation system is divided into two ways to calculate the power generation amount according to whether it has the measured data. The invention utilizes renewable energy to ensure reliable electricity consumption of users in islands and remote areas, reduces electricity consumption costs of users, reduces environmental pollution, switches controllable loads according to changes in electricity consumption, and maintains the self-balance of the microgrid system.

Description

technical field [0001] The invention relates to the supply and management of electric energy, in particular to a micro-grid system and a method for controlling and predicting power generation. Background technique [0002] At present, with the continuous development of economy and technology, air pollution, soil loss, water resources pollution and other problems have brought serious impact on the healthy life of the general public. In the past, the power supply mode of the large power grid was inflexible, and there would be phenomena such as limiting wind and light. The reform of the power grid system and the mode of terminal purchase and sale of electricity have brought space for the development of microgrids. [0003] As far as the current domestic microgrid research level is concerned, it mainly focuses on two contents, one is the power management control device and the theoretical basis of control, and the other is research from the aspects of microgrid power management ...

AI Technical Summary

Problems solved by technology

In the past, the power supply mode of the large power grid was not flexible, and there would be phenomena such as wind and light restrictions. The reform of the power grid system and the mode of terminal purchase and sale of electricity have brought room for the development of micro-grids.

[0003] As far as the current domestic microgrid research level is concerned, most of them focus on two parts, one is the power management control device and the theoretical basis of control, and the other is research from the aspects of microgrid power management and distributed power output balance. Research on the entire system of power generation, transmission and distribution, and user side from the perspective of the entire microgrid and even the regional energy Internet

Images