Isolated micro-grid optimum economic operation method taking energy storage life loss into consideration

A technology with optimal economy and life loss, applied in computing, energy industry, data processing applications, etc.

Active Publication Date: 2014-11-19
CHONGQING UNIV
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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides an optimal economical operation method for an isolated microgrid that takes energy storage life loss into account, which comprehensively considers factors such as energy storage life loss and load prediction error, and establishes an optimal microgrid. After the economic

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  • Isolated micro-grid optimum economic operation method taking energy storage life loss into consideration

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[0166] In order to verify the effectiveness of the optimal economic operation method of the isolated micro-grid in the present invention considering the energy storage life loss, the optimal economic operation method of the isolated micro-grid of the present invention is used to optimize the configuration of the economic operation of the micro-grid in a certain area. In this embodiment, the planned scheduling period is 1 day, and a time period t is set as 1 hour; therefore, the total number of time periods included in the 1-day scheduling period is T=24 time periods. With the lowest total operating cost of the microgrid system as the goal, after the optimal economic operation model of the microgrid in this area is established according to the method of the present invention, the particle swarm optimization algorithm is used to solve the established optimal economical operation model of the microgrid, and in During the solution process, the output of the micro-turbine and the So...

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Abstract

The invention discloses an isolated micro-grid optimum economic operation method taking energy storage life loss into consideration. Through research on influences of the charge and discharge process of a lead acid battery on life and conversion into economic cost to be added to a target function, a micro-grid optimal economic operation model taking the energy storage life loss into consideration is established, the model is solved by use of a strategy of combining an adjusting strategy and a particle swarm algorithm, an isolated micro-grid optimum economic operation scheme is determined, and output of a micro gas turbine and charge and discharge power of the lead acid battery at each stage in a scheduling period of an isolated micro-rid system are controlled according to the optimum economic operation scheme, such that the micro-rid system can be prevented from excessive power generation, and the operation cost of the micro-rid system can be decreased under the condition that power supply load demands are satisfied; and at the same time, the operation process of the isolated micro-grid optimum economic operation method is quite simple, the versatility is quite good, and the isolated micro-grid optimum economic operation method can be widely applied to planning the micro-grid economic operation scheme on different application occasions.

Description

technical field [0001] The invention relates to the economical operation technology of the electric power system, in particular to an optimal economical operation method of the isolated micro-grid considering the life loss of energy storage, and belongs to the field of economic dispatching of the electric power system. Background technique [0002] With the increasingly severe energy crisis and environmental pollution, solar energy and wind energy are playing an increasingly important role in the utilization of renewable energy due to their rich resources and no pollution. However, solar energy and wind energy have the characteristics of randomness and intermittency. After being connected to the grid, their operation and scheduling are more difficult. The emergence of microgrid provides an effective means for the comprehensive utilization of renewable energy. Microgrid is a new type of network structure, which is a system unit composed of a variety of distributed micro powe...

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06
CPCY02P80/14
Inventor 谢开贵胡博沈玉明余娟任洲洋李龙云钟隽
Owner CHONGQING UNIV
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