Centralized control method for microgrid

Abstract

The invention relates to a centralized control method for a microgrid. Coordination control is performed on generating equipment, loading equipment and energy storage equipment in the microgrid according to the following priority levels: 1, controlling the energy storage equipment to be in a state of charge only if the actual residual capacity of the energy storage equipment is lower than a lower limit value of residual capacity; controlling the energy storage equipment to be in a state of discharge only if the actual residual capacity of the energy storage equipment is higher than an upper limit value of the residual capacity; 2, inputting the non-input loading equipment into the microgrid when the generated power of the generating equipment or the residual capacity of the energy storage equipment is more than power or electric quantity required by the loading equipment and reaches a corresponding set input value; 3, increasing the generated power of the microgrid according to the priority levels of increasing the generated power of the generating equipment and the discharge power of the energy storage equipment when the power demand of the loading equipment is not met. The centralized control method for the microgrid disclosed by the invention can be used for performing the unified coordination control on various kinds of equipment, such as the loading equipment, the energy storage equipment, the generating equipment, a PCC switch and the like, and is in favor of the application and promotion of the microgrid.

Description

technical field [0001] The invention belongs to the technical field of micro-grid operation control, and relates to a controller capable of centralized and coordinated control of various devices in the micro-grid, in particular to a central control method for the micro-grid. Background technique [0002] Microgrid can solve the current problem of using new energy. It is an important high-tech field to promote new energy, save energy and reduce carbon emissions. It is vividly called the "golden key" to open new energy applications. [0003] The microgrid has the characteristics of joint connection of various small power generation equipment and energy storage equipment. The automatic and dynamic adjustment of various equipment in the microgrid is a difficult point and focus of microgrid control. The microgrid control technology currently on the market, large Some of them are energy balance control or frequency tracking control at the millisecond level, and there is a lack of ...

AI Technical Summary

Problems solved by technology

[0003] The microgrid has the characteristics of joint connection of various small power generation equipment and energy storage equipment. The automatic and dynamic adjustment of various equipment in the microgrid is a difficult point and focus of microgrid control. The microgrid control technology currently on the market, large Some of them are energy balance control or frequency tracking control at the millisecond level, and there is a lack of successful solutions that can uniformly control various equipment such as load equipment, energy storage equipment, power generation equipment, and PCC switches.

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