Microgrid economic operation optimization method based on fuzzy particle swarm algorithm and energy saving system

A fuzzy particle swarm and energy storage system technology, applied in the field of micro-grid economic operation optimization, can solve problems such as the inability to effectively meet the micro-grid economy, safety, energy saving and emission reduction, the limit of the optimal point convergence speed cannot be guaranteed, and mathematics cannot be achieved.

Active Publication Date: 2014-11-05
STATE GRID CORP OF CHINA +4
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Problems solved by technology

Most of the existing research methods focus on oversimplified heuristic strategies. Due to the inability to achieve the mathematical optimal point and the shortcomings of the convergence speed limit, the economy and implementab

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  • Microgrid economic operation optimization method based on fuzzy particle swarm algorithm and energy saving system
  • Microgrid economic operation optimization method based on fuzzy particle swarm algorithm and energy saving system
  • Microgrid economic operation optimization method based on fuzzy particle swarm algorithm and energy saving system

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Embodiment Construction

[0098] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0099] Such as figure 1 As shown, the examples used in the present invention include 20KW wind power (WT), 10KW photovoltaic (PV), 40KW fuel cell (FC), 65KW micro gas turbine (MT), and 100KW battery energy storage system (ES);

[0100] The present invention provides a micro-grid economic operation optimization method based on fuzzy particle swarm algorithm and energy storage system, the method includes the following steps:

[0101] Step (1): Determine the economic dispatch strategy of each component in the microgrid. WT and PV track the maximum power output, and give priority to their output due to their environmental friendliness; FC and MT provide output when the power generation cost is lower than the electricity price, and stop output when the power generation cost is higher than the electricity price; ES uses fuzzy...

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Abstract

The invention provides a microgrid economic operation optimization method based on a fuzzy particle swarm algorithm and an energy saving system. The method comprises the following steps of: (1) determining an economic dispatch strategy of a micro source in the microgrid; (2) building a microgrid grid-connected economic operation mathematical model combined with economic benefit and environment benefit; (3) putting forward a fuzzy control strategy for charging/discharging control of the energy saving system; and (4) optimizing based on the particle swarm algorithm, and determining the output of all micro sources and the generation cost per day. Compared with a method in which an optimization dispatch scheme is not adopted by the energy saving system, the method has the advantages that the generation cost per day of microgrid running and pollution emission are reduced; and compared with a method in which the fuzzy control charging/discharging strategy is not adopted by the energy saving system, the method has the advantages that optimal solution quality is improved, operational convergence rate is increased, and the reliability of microgrid running is further enhanced.

Description

technical field [0001] The invention relates to an operation, simulation, analysis and dispatching technology of a power system, in particular to a micro-grid economic operation optimization method based on a fuzzy particle swarm algorithm and an energy storage system. Background technique [0002] A microgrid based on certain standards combines various distributed power sources, loads, energy storage units, and control devices to form a single controllable unit that simultaneously supplies energy and heat to users and realizes cogeneration of heat and power. Microgrid has become an important part of the development of smart grid due to its economical, energy-saving and environmentally friendly characteristics. The economic benefits of microgrid operation are the key factors to attract users and promote it in the power system, and it is also the development direction of smart grid. The economical operation of microgrid-connected grids involves the energy transaction with the...

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Application Information

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IPC IPC(8): H02J3/38
CPCY02B10/10Y02E10/56Y02E10/76
Inventor 李相俊闫鹤鸣麻秀范胡娟宁阳天郑高惠东
Owner STATE GRID CORP OF CHINA
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