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Energy management method and system of grid-connected micro power grid

An energy management and micro grid technology, applied in the field of power system, can solve the problems of integration and combination to provide the best energy storage management strategy, and achieve the effect of minimizing power production and operating costs and maximizing economic benefits

Inactive Publication Date: 2017-07-14
BEIJING ETECHWIN ELECTRIC
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  • Claims
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Problems solved by technology

[0005] Regarding the energy management or storage management strategy in the microgrid in the prior art, only a single energy storage unit is considered, and the best solution for the integration and combination of two or more energy storage units (energy storage unit, ESU) is not provided. Best energy storage management strategy

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  • Energy management method and system of grid-connected micro power grid
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Embodiment Construction

[0035]Detailed example embodiments of the inventive concepts are disclosed herein. However, specific structural and functional details disclosed herein are merely representative for purposes of describing example embodiments of the inventive concepts. Example embodiments of the inventive concepts may be embodied in many alternative forms and should not be construed as limited to only the embodiments set forth herein.

[0036] Therefore, although example embodiments of the inventive concepts are capable of various modifications and alternative forms, the embodiments of the inventive concepts will be shown by way of example in the drawings and will be described herein in detail. It should be understood, however, that there is no intention to limit example embodiments of the inventive concepts to the particular form disclosed, but on the contrary, example embodiments of the inventive concepts cover all modifications, Equivalents and Alternatives. Like numbers refer to like elem...

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Abstract

The invention discloses an energy management method and system of a grid-connected micro power grid. The energy management method can comprise the following steps: based on a power transaction cost and benefit between a micro power grid and a main power grid, operation and maintenance costs of the micro power grid and technical requirements needing to be met while normal power supply of the micro power grid, establishing an energy management model of the micro power grid; predicting a current load demand and current generated power of renewable energy; obtaining a time-varying electricity price of the power grid; based on the predicted load demand, the predicted generated power and the renewable energy and the obtained time-varying electricity price, and through utilization of the particle swarm optimization algorithm, determining an energy management strategy of the energy management model of the micro power grid in the case that a predetermined time interval is taken as a unit; and, based on the determined energy management strategy, performing dynamic energy scheduling on the micro power grid in the case that the predetermined time interval is taken as the unit. Through the energy management method and system of the invention, the optimized energy management strategy can be achieved, and the minimum cost and the maximum benefit can also be achieved.

Description

technical field [0001] The present invention relates to the field of power systems, and more specifically, to an energy management method and system for a grid-connected microgrid. Background technique [0002] A microgrid consists of interconnected loads, distributed energy sources (both conventional and renewable), and energy storage systems. Microgrids have black start capabilities and can operate in standalone mode or in non-standalone mode connected to other microgrids or the main grid. [0003] A microgrid can send (sell) electricity to or receive (buy) electricity from the main grid. In the prior art, the transaction between the microgrid and the main grid is based on a fixed and pre-determined price per kWh. However, a shift to a time-varying electricity pricing model is taking place in recent years with the application of smart meter technology, capable of accurately measuring energy production and consumption at each moment. [0004] The development of this ener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/28
CPCH02J3/003H02J3/28H02J3/382H02J2203/20Y02E70/30
Inventor 阿比内特·特斯法耶·艾希
Owner BEIJING ETECHWIN ELECTRIC
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