Energy management method of microgrid under electric power market

Abstract

The invention discloses a microgrid energy management method in an electricity market. According to the microgrid energy management method, a MEMS (microgrid energy management system), by combination with real-time electricity price on the market, distributed type power supplier quoted prices, unit capacity and other information, formulates a distributed type power supplier production plane through optimization degree on the basis of renewable energy output predication and a load predication technology; meanwhile, a control scheme on load sides is determined; an optimized scheme is transmitted to a partial controller, such as a distributed type power supply controller and a load controller through information; the distributed type power supply controller controls the unit output while the load controller controls controllable loads according to the optimized scheme; the minimization of the operating costs of the power suppliers and the bidding subsidy costs of the load sides is taken as the target; and all users participated in the object need to execute a control plan instruction issued by the MEMS according to decision information. By adoption of the method, user participation is stimulated through an incentive mechanism; and for the subsidy bidding method for the load sides, the users can control the quoted prices to control benefits of their own.

Description

technical field [0001] The invention belongs to the technical field of electric power systems, and relates to a micro-grid energy management method in an electric power market. Background technique [0002] With the reform of my country's electricity marketization, the establishment of an electricity market that can reflect the relationship between supply and demand is the future development trend. Coupled with the air pollution caused by smog in recent years, the continuous expansion of the power generation side alone cannot meet the needs of development. At the same time, it is necessary to cooperate with reasonable energy management optimization methods. [0003] In an open electricity market environment, independent distributed power producers and users in the microgrid can participate in the market. How to design an energy management method that is more energy-saving and environmentally friendly and can optimize the operating cost of the microgrid on the basis of satisf...

AI Technical Summary

Problems solved by technology

[0004] (1) Existing energy management technologies mostly manage energy by optimizing and controlling controllable power sources and energy storage, but the randomness and instability of distributed power generation bring great limitations to energy management, or require equipment More sufficient energy storage or large grid support, only controlling the controllable power supply is not the most ideal energy management method;

[0005] (2) The existing energy management technology lacks a specific optimization strategy for the load side. Since the load side needs to reduce a considerable amount of load to achieve the purpose of control, only some large industrial users currently participate in the response

In fact, the load level of the microgrid ranges from tens of kW to tens of MW, including a variety of load types. The user side of the microgrid has good potential to participate in the response, and should be mainly used in energy management optimization. According to changes in electricity prices or other However, there is still a lack of reasonable and specific load control models and implementation methods

[0006] (3) At present, the existing technology in China focuses on the microgrid energy management optimization target mainly on the economic dispatch of the microgrid itself, lacks the energy management model of the microgrid in the market environment, and the existing model is slightly simple and is also the existing technology insufficient

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