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Microgrid energy storage power station program control method based on economical evaluation

An energy storage power station, planning control technology, applied in computing, energy industry, photovoltaic power generation and other directions, can solve the problem of less capacity allocation methods of hybrid energy storage system, reduce the number of charging and discharging and the depth of charging and discharging, reduce costs, improve performance effect

Active Publication Date: 2016-01-20
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
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Problems solved by technology

[0005] At present, energy storage power station planning and energy storage system capacity allocation are mostly single-type energy storage capacity allocation, and there are few capacity allocation methods for hybrid energy storage systems

Method used

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  • Microgrid energy storage power station program control method based on economical evaluation
  • Microgrid energy storage power station program control method based on economical evaluation
  • Microgrid energy storage power station program control method based on economical evaluation

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Embodiment Construction

[0083] Below in conjunction with accompanying drawing and embodiment the present invention will be further described: as figure 1 As shown, the micro-grid energy storage power station planning method of the present invention, which takes economic evaluation into account, includes the following steps:

[0084] Step 1: The structure diagram of the microgrid including wind / solar / storage is as follows figure 2 As shown, the microgrid load curve is shown as image 3 As shown, the power characteristic curve of the wind turbine is shown in Figure 4 As shown, the power characteristic curve of the photovoltaic array is shown in Figure 5 shown.

[0085] Step 2: Calculate the output of the energy storage system required to meet the load demand:

[0086]

[0087] In the formula, is the microgrid load, is the output power of the microgrid wind power, is the photovoltaic output power of the microgrid.

[0088] The output curve of the calculated energy storage system is as f...

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Abstract

The invention relates to a microgrid energy storage power station program control method based on economical evaluation, comprising predicting the microgrid load data of N days, wind power output power and photovoltaic output power, and characterized by calculating the energy storage system capacity meeting load requirements based on obtained data; utilizing an improved empirical mode decomposition algorithm to decompose the energy storage system capacity to obtain n IMF components, wherein k is respectively 1-n, the sum of 1-(k-1) IMF components is used as a cell capacity, and the sum of k-n IMF components is used as a super capacitor capacity; substituting the power and capacity of a cell and a capacitor into a microgrid energy storage power station program model, determining whether meeting constrained conditions, and calculating a corresponding objective function value; and utilizing a genetic algorithm to search optimization for the model, obtaining a k value meeting the constrained conditions and minimizing an objective function, and determining the optimal capacity configuration and annual mean least cost of an energy storage system.

Description

technical field [0001] The invention relates to a planning and control method for a micro-grid energy storage power station in consideration of economic evaluation, in particular to a planning and design method for a hybrid energy storage power station in a micro-grid. Background technique [0002] In order to weaken the impact and negative impact of distributed power generation on the power grid, and fully tap the value and benefits brought by distributed energy to the power grid and users, in 2001, R.H.Lasseter and others at the University of Wisconsin in the United States proposed the concept of microgrid. The microgrid consists of a variety of distributed power generation units, energy storage and loads. Among them, the output power of distributed power generation units such as wind power and photovoltaic power generation is intermittent and random, and the change of load is also random, which brings great challenges to the stable operation of the microgrid. [0003] En...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06H02J3/28
CPCY02E70/30Y02P80/14Y02E10/56Y04S10/50
Inventor 韩晓娟张喜林王丽娜张帆
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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