Microgrid energy management control method

A technology of energy management and control method, which is applied in the field of power system, can solve the problem that the detailed information of multiple alternative schemes cannot be given at the same time, and achieve the effects of improving the economy of optimal dispatching, improving economic effects, and wide adaptability

Inactive Publication Date: 2014-08-20
TIANJIN UNIV
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Problems solved by technology

In addition, the existing algorithms are usually unable to provide detailed information on multiple alternatives at the same time, such as the final result of the operation of the

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  • Microgrid energy management control method
  • Microgrid energy management control method

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Embodiment Construction

[0047] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0048] Due to the load peak-valley difference characteristics and the existence of distributed power sources in the microgrid, the active power balance has large volatility, which requires reasonable short-term energy management to control. The embodiment of the present invention provides a microgrid energy management control method. For the overall flow, see figure 1 This method is based on the charge and discharge control of the energy storage equipment to balance the errors caused by the distributed power or load forecast in the microgrid. Through multi-stage dynamic solution, the microgrid can maximize the benefit or minimize the operating cost in a certain period. See the description below for details. :

[0049] 101: Based on the power ma...

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Abstract

The invention discloses a microgrid energy management control method, and relates to the field of power system microgrid optimized control. The method is based on main network power market environment accessed by a microgrid, network constitution of the microgrid and features of energy storage equipment, and an energy management optimized control model of a target microgrid is built. A prediction value of a distributed power supply and the load in the microgrid in a short-term or ultra-short-term energy management control cycle serves as a state variable, a charging state of an energy storage component serves as a decision variable, and solving of energy management optimized control is carried out. Modeling is carried out according to a cost function of each stage, market environment factors accessed by the microgrid are isolated, charging and discharging efficiency of the energy storage equipment and energy storage depreciation and operation cost are fully taken into consideration, and the method has wide adaptability. According to the technical scheme, dynamic economic scheduling is adopted, optimal operation cost under different state situations of each stage can be obtained in the solving process, and analysis, comparison and decision making of operators are facilitated while economical efficiency of microgrid energy management optimized control is improved.

Description

Technical field [0001] The invention relates to the field of electric power systems, in particular to a microgrid energy management optimization control method containing distributed power sources and energy storage. Background technique [0002] With the depletion of petrochemical energy and environmental pollution, new energy has become an important form of power source in the future. Distributed power sources such as wind energy and photovoltaics are intermittent and uncontrollable. It is of great significance to conduct power quality management in the form of microgrids to control the stability of the tie line power and avoid the impact of distributed power sources on the grid. The optimized operation of energy management of the microgrid system is an important content in the research of microgrid integrated control, and it is also the field involved in the present invention. [0003] For microgrid energy management and operation control, relevant scientific research organizat...

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Application Information

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IPC IPC(8): H02J3/38
Inventor 孔祥玉王晟晨
Owner TIANJIN UNIV
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