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Economic dispatch method for micro grid based on centralized and distributed double-layer optimization strategy

A double-layer optimization and economic scheduling technology, applied in the microgrid field, can solve the problems of high reliability and diversified power supply strategies for users, large power grid energy consumption, and high network loss, etc., to meet real-time uncertain needs , fast response, and the effect of reducing the burden

Inactive Publication Date: 2015-07-15
KAILI POWER SUPPLY BUREAU
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Problems solved by technology

[0002] With the rapid increase of the scale of the power grid, due to the large energy consumption of the traditional power grid, serious environmental pollution, and high network loss, it is becoming more and more difficult to meet the requirements of high reliability and diversified power supply strategies of users.

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  • Economic dispatch method for micro grid based on centralized and distributed double-layer optimization strategy
  • Economic dispatch method for micro grid based on centralized and distributed double-layer optimization strategy
  • Economic dispatch method for micro grid based on centralized and distributed double-layer optimization strategy

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Embodiment Construction

[0050] The invention will be described in further detail below in conjunction with the accompanying drawings.

[0051] Such as figure 2 As shown, the microgrid of the present invention is composed of a wind power generator (i.e.: WT), a photovoltaic power generation unit (i.e.: PV), two micro gas turbines (i.e.: MT), two diesel generators (i.e.: DE), a set of fuel cells (ie: FC), a set of energy storage units (ie: Bat) and household loads.

[0052] Such as figure 1 As shown, a microgrid economic scheduling method based on the centralized and distributed two-tier optimization strategy, which divides the microgrid economic scheduling optimization process into a centralized scheduling layer based on forecast data and a distributed scheduling layer based on real-time data , including the following steps:

[0053]Step 1: The control center of the micro-grid collects the predicted output data and the total load of the uncontrollable micro-power sources of the micro-grid in a for...

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Abstract

The invention discloses an economic dispatch method for a micro grid based on a centralized and distributed double-layer optimization strategy. The method is an optimized dispatching method using economical efficiency as an objective under the running state of a single micro grid. The method comprises the following steps: in the centralized-distributed double-layer optimization, a centralized layer corresponds to an advanced optimization process within a predicted period, which is performed based on predicted data of the output power and the load of each uncontrollable unit in the micro grid, and the process of the method is completed by a centralized control center of the micro grid; the distributed optimization corresponds to a real-time optimization process performed based on real-time data of the output power and the micro grid load of each uncontrollable unit of the micro grid at each dispatch time in a predicted period length, and the optimization process is performed in a distributed manner and is completed by a micro power supply controller which is built in each unit of the micro grid. The economic dispatch method disclosed by the invention puts forwards that the economical efficiency of energy storage is not considered, namely the energy storage does not participate in the optimization process of the economical efficiency.

Description

technical field [0001] The invention relates to a micro-grid economic scheduling method based on a centralized and distributed double-layer optimization strategy, and belongs to the technical field of micro-grids. Background technique [0002] With the rapid increase of the scale of the power grid, due to the large energy consumption, serious environmental pollution and high network loss of the traditional power grid, it is becoming more and more difficult to meet the requirements of high reliability and diversified power supply strategies of users. Distributed power generation has many advantages such as high energy utilization rate, low environmental pollution, high reliability, flexible and convenient installation, low cost and high return, and can effectively solve many potential problems of traditional power grids. Distributed power sources mainly include internal combustion engines fueled by gas or liquid, fuel cells, micro gas turbines, and renewable energy sources, s...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/46H02J13/00
CPCY02E10/56Y02E10/76Y02E40/70Y04S10/123Y04S10/50
Inventor 陈西付蓉李满礼
Owner KAILI POWER SUPPLY BUREAU
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