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Island microgrid demand response economic dispatching method and system based on time-of-use electricity prices

A demand response and economic scheduling technology, applied in system integration technology, information technology support system, data processing application, etc., can solve the problem of ignoring user-side benefits, etc., to achieve the effect of economic optimal scheduling

Active Publication Date: 2019-07-23
PINGYANG ELECTRIC POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER +2
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Problems solved by technology

[0003] In the operation of the island microgrid, the peak demand during the peak period will bring considerable pressure to the power generation side, while the direct load shedding method ignores the benefits of the user side

Method used

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  • Island microgrid demand response economic dispatching method and system based on time-of-use electricity prices
  • Island microgrid demand response economic dispatching method and system based on time-of-use electricity prices
  • Island microgrid demand response economic dispatching method and system based on time-of-use electricity prices

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Embodiment Construction

[0070] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0071] Such as Figure 1 to Figure 6 Shown; a microgrid economic dispatch method based on demand response, which includes:

[0072] S1: According to the economic dispatch model of the power generation side, the theoretical optimal output formula of the controllable micro gas turbine is derived under the constraints;

[0073] S2: Establish a demand response model, construct a load-side benefit objective function including electricity utility and electricity cost, and constraints;

[0074] S3: According to the demand response model, combined with the time-of-use electricity price mechanism, calculate the optimal access of loads and the optimal output of micro gas...

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Abstract

The invention discloses an island microgrid demand response economic dispatching method based on time-of-use electricity price, and the method comprises the steps: deriving a theoretical optimal output formula of a controllable micro gas turbine under a constraint condition according to a power generation side economic dispatching model; establishing a demand response model, and constructing a load side benefit objective function containing power utilization effectiveness and power utilization cost, and constraint conditions; and according to the demand response model, in combination with a time-of-use electricity price mechanism, calculating the optimal access quantity of the load and the optimal output quantity of the micro gas turbine, and adjusting the output quantity of the adjustableload and the micro gas turbine. The system comprises an output unit of the micro gas turbine, a demand response model unit and an economic optimization scheduling unit of a microgrid. The advantagesare that the access quantity of the adjustable load is optimized based on the time-of-use electricity price, and user-side revenue maximization is achieved; in addition, the output of the micro gas turbine is adjusted, so that the micro-increment rates are equal, and the total power generation cost of the island microgrid is minimized; and in the optimization process, the power balance of the system can be ensured.

Description

technical field [0001] The invention relates to the technical field of centralized optimization of micro-grids, in particular to an island micro-grid demand response economic scheduling method and system based on time-of-use electricity prices. Background technique [0002] With the rapid development of the global economy, the demand for electricity is also increasing, and the rapid growth of fossil energy consumption has exacerbated the global energy shortage and environmental pollution. Distributed Generation (DG) has developed rapidly due to its advantages of flexibility and cleanliness, and microgrid technology has given full play to the advantages of distributed generation and improved the utilization rate of renewable energy. The microgrid can smoothly switch between grid-connected and island operation modes, while in island operation, the operating environment will be more complicated due to internal uncertainties. With the development of island microgrid control tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06315G06Q50/06Y04S10/50Y02E40/70
Inventor 戴瑞海林厚飞金建新黄益宏林启待施亦治章雷其廖玥熙李强陈民铀
Owner PINGYANG ELECTRIC POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER
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