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Micro-grid operation optimizing method in consideration of real-time electricity price and controllable load

A real-time electricity price, micro-grid technology, applied in the direction of instruments, data processing applications, forecasting, etc., can solve the problems of participating in demand side management, difficult users, etc., and achieve the effect of improving economic efficiency

Inactive Publication Date: 2015-01-07
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Claims
  • Application Information

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Problems solved by technology

Fixed electricity prices and uncontrollable loads make it difficult for users to participate in demand-side management

Method used

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  • Micro-grid operation optimizing method in consideration of real-time electricity price and controllable load
  • Micro-grid operation optimizing method in consideration of real-time electricity price and controllable load
  • Micro-grid operation optimizing method in consideration of real-time electricity price and controllable load

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Embodiment Construction

[0037] figure 1 It is a structural diagram of the microgrid system, which includes photovoltaic power generation units, wind power generation units, energy storage battery units and power loads. In the calculation and simulation of this embodiment, distributed energy generation and grid power supply are used as the main power supply, and the energy storage battery unit plays an auxiliary regulation role. The photovoltaic power generation unit is composed of a photovoltaic array and a photovoltaic inverter, and the wind power generation unit is composed of a wind generator and a transformer. Among them, the function of the photovoltaic cell is to convert solar energy into electrical energy, and the inverter mainly converts the direct current generated by the photovoltaic into alternating current for use by the load; the function of the wind generator is to convert wind energy into electrical energy. The energy storage battery unit is composed of a battery and a charging and di...

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Abstract

The invention discloses a micro-grid operation optimizing method in consideration of the real-time electricity price and the controllable load. The real-time electricity price and the controllable load are introduced, difference minimization of the user electricity cost, an HVAC and an EWH with the corresponding target temperatures serves as the optimization target, the proportion of power supplied to the load by a distributed power source to charging power for stored energy with the distributed power source, the delay time of a delay load and the working state of a schedulable load serve as the decision variables, optimization and simulation are performed through a differential evolution algorithm, and a simulation and optimization operation result is analyzed. The delaying performance of the delay load and the selectivity of the operation state of the schedulable load are excavated and reflected, and the effectiveness and applicability of the optimizing method are verified. The method fully reflects the guide function of the real-time electricity price on the user electricity habit; the controllable load is divided into two parts, and regulation of the load is reflected; resources on the demand side are fully utilized, and a theoretical support is provided for economic operation of a micro-grid.

Description

technical field [0001] The invention belongs to the technical field of electric power system micro-grid, is an optimization method for micro-grid operation, and particularly relates to a micro-grid operation optimization method considering real-time electricity price and controllable load. Background technique [0002] As an effective carrier of distributed energy and demand response, microgrid has unique advantages in realizing the integration of distributed energy, energy storage, and load, realizing the local consumption of distributed energy, improving energy efficiency, and being a beneficial supplement to large power grids. . Demand response is an important basis and powerful guarantee for improving the demand elasticity and responsiveness of microgrid users, reasonably sharing market risks, and realizing microgrid operation optimization and user-centered electricity economic goals. Demand response regards energy demand reduced by changing resource consumption pattern...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06G06N3/12
CPCG06Q10/04G06Q50/06
Inventor 李鹏郭晓斌许爱东雷金勇黄焘刘念汤庆峰樊玮
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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