Micro-grid cluster system based on fully autonomous controlled sharing and control method

Abstract

According to the micro-grid cluster system based on fully autonomous controlled sharing and the control method thereof, through a controlled sharing principle agreed in advance, each micro-grid system operates autonomously under a controlled sharing constraint condition, safety, economy and rationality are considered, 24 hours of each day are taken as a cycle to be divided into a plurality of operation time periods T, and the time periods T are divided into a plurality of time periods T; in each operation period, an electric energy regulation declaration and unified approval controlled execution method is adopted, and electric energy interaction with a power grid is autonomously executed according to approved power and electric quantity limits; each micro-grid system realizes autonomous management and control and operation management through an energy management system (EMS) of the micro-grid system, and according to an electric energy regulation instruction sent by a general control system GEMS of the micro-grid cluster system, each micro-grid system autonomously exchanges electric quantity with a power bus according to a controlled sharing principle. Therefore, each micro-grid system in the micro-grid cluster can fully and autonomously regulate and control the operation and autonomously interact electric energy, the resource utilization rate of each micro-grid system is improved, and the investment benefit is increased.

Description

technical field [0001] The invention belongs to the technical field of microgrids, and in particular relates to a microgrid cluster system and a control method based on fully autonomous and controlled sharing. Background technique [0002] The change of energy structure has promoted the wide application of new energy, especially distributed renewable energy. At the same time, the uncertainty and volatility of distributed renewable energy have added great challenges to the smooth operation of power and grid. In this regard, the use of local microgrids to connect distributed renewable energy, energy storage, and loads together is one of the effective methods for the efficient application of distributed renewable energy. Due to the relatively low energy density of distributed renewable energy, it is suitable for decentralized installation and on-site applications. For example, the use of solar power generation systems constructed by buildings combined with energy storage arbitr...

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Problems solved by technology

Due to the relatively low energy density of distributed renewable energy, it is suitable for decentralized installation and on-site application. The application of distributed new energy microgrid systems is a process of gradual increase and gradual development. The phenomenon of building multiple microgrid systems in one region has begun to appear. Therefore, it is necessary to study multiple decentralized microgrids. It is a development trend of distributed renewable energy applications to connect to form the overall operation resource sharing of the microgrid cluster system. The technology of the microgrid cluster system is complex and in an early stage. At present, there is no mature and effective way to form a microgrid cluster system. with run control method

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