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A scheduling control method for energy storage stations to realize load power load shifting and valley filling in distribution network

A load power, dispatch control technology, applied in the direction of AC network load balancing, circuit devices, AC network circuits, etc., can solve the problem that there is no energy storage system to track the load change, so as to delay the upgrade work, save investment and operating costs , calculate the simple effect

Active Publication Date: 2019-10-11
安徽珞珈能源研究院有限公司
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  • Application Information

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Problems solved by technology

[0007] Based on the above analysis and published technical information, the research on energy storage dispatching focuses on the consumption of new energy sources such as wind and solar and reducing the investment cost of micro-grid operation. There is no energy storage system that tracks load changes and realizes peak-shaving and valley-filling of the power system. The scheduling method

Method used

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  • A scheduling control method for energy storage stations to realize load power load shifting and valley filling in distribution network
  • A scheduling control method for energy storage stations to realize load power load shifting and valley filling in distribution network
  • A scheduling control method for energy storage stations to realize load power load shifting and valley filling in distribution network

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Embodiment 1

[0081] Embodiment 1. An energy storage station dispatching control method that realizes load power shifting and valley filling of distribution network, such as figure 1 As shown, based on the day-ahead scheduling and real-time correction, a dynamic optimization model of the day-ahead scheduling plan for charging and discharging of energy storage stations is established. The calculation method of this model can realize the day-ahead dispatching plan of the energy storage station, determine the output level of the energy storage station on the second day, and track the real-time power demand through the dynamic programming method of real-time correction, which is the load power of the distribution network. The purpose of cutting peaks and filling valleys.

[0082] Include the following steps:

[0083] 1. Obtain the historical data of electricity demand. Based on these historical data, the power grid operation department predicts the electricity demand of the next day, and repor...

Embodiment 2

[0120] Embodiment 2. Firstly, the power grid operation department obtains the load forecast value based on the historical data of electricity demand; secondly, based on the load forecast value and the manufacturer's calibration parameters of the energy storage station, the energy storage station is used to track the load power peak shaving and filling. The effect of the valley is the best, and an optimization model is established to solve the day-ahead scheduling plan of the energy storage station; then, according to the actual value of the load power consumption during the next day's operation, a real-time correction model is established, and the day-ahead scheduling plan formulated by rolling correction is used to track the actual load Variations that do not match forecasts. The specific implementation process is as follows:

[0121] 1) Obtain the predicted value of the electricity demand for the next day from the power grid operation department. The predicted electricity de...

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Abstract

The invention relates to the technical field of smart power grids, and particularly to an energy storage station scheduling control method for realizing peak-clipping and valley-filling of a load power of a power distribution network. The energy storage station scheduling control method comprises the steps of 1, predicting an electricity demand of a power grid on the next day based on historical data of electricity demands to obtain a predicted value of a day-ahead electricity demand; 2, building a day-ahead scheduling model of the energy storage station, inputting the day-ahead demand predicted value into the day-ahead scheduling model to obtain a day-ahead scheduling plan of the energy storage station; and 3, replacing the historical data of the electricity demands by using real-time data at the past time based on the real-time condition of the electricity demand on the next day, and inputting the real-time data into the day-ahead scheduling model of the energy storage station so as to obtain a real-time corrected scheduling plan of the energy storage station. The control method not only can realize the peak-clipping and valley-filling function of the energy storage station for tracking the load change, can avoid reasonable day-ahead scheduling plan caused by prediction error, and can schedule the charging and discharging power of the energy storage station in the power grid scientifically. The energy storage station scheduling control method for realizing peak-clipping and valley-filling of the load power of the power distribution network is low in data demand, simple in calculation and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of smart grids, and in particular relates to an energy storage station dispatching control method for realizing peak-shaving and valley-filling of distribution network load power. Background technique [0002] From pumped hydro storage to the current large-capacity battery energy storage, the development of science and technology has led to the development and application of more and more high-density, large-capacity, and low-cost energy storage materials and energy storage technologies. With its fast throughput capability, flexible adjustment capability and integrated charging and discharging characteristics, the energy storage system can effectively manage the demand side of the power system, eliminate the peak-valley difference during peak and trough periods of power consumption, smooth the load, and improve the utilization rate and efficiency of equipment. service life. Energy storage systems are gradua...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/28
CPCH02J3/28H02J2203/20
Inventor 杨军刘源朱旭王馨
Owner 安徽珞珈能源研究院有限公司
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