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A typical curve mining method of energy storage system based on cloud model

An energy storage system and typical curve technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of large amount of calculation, less attention to mining work, and insufficient overall understanding of the charging and discharging power of the energy storage system. and other problems to achieve the effect of reducing the amount of calculation

Inactive Publication Date: 2017-11-28
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] At present, the research on the charging and discharging power of the energy storage system is concentrated on the aspects of optimal control and capacity configuration, and less attention is paid to the excavation of typical operating curves. Huge and other issues

Method used

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  • A typical curve mining method of energy storage system based on cloud model
  • A typical curve mining method of energy storage system based on cloud model
  • A typical curve mining method of energy storage system based on cloud model

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Embodiment Construction

[0026] The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0027] The present invention proposes a cloud model-based mining method for typical curves of energy storage systems, such as figure 1 shown, including:

[0028] Step 1. Set the application scenario of the energy storage system as smoothing the power fluctuation of the photovoltaic power station. Set the time span to 1 year. The selected control strategy is the first-order low-pass filter. Such as figure 2 As shown, the solar-storage combined system is mainly composed of photovoltaic power plants, energy storage systems and control systems. P s is the output power of the photovoltaic power station, P b is the output power of the energy storage system, P w is the total output power of the combined optical storage system. The relationship between them is shown in the following formula (after discretization):

[0029] P out (k)=α·P out (k-1)+(1-α)·P s (k)

[003...

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Abstract

The invention belongs to the technical field of power system energy storage systems, and in particular relates to a cloud model-based mining method for typical curves of energy storage systems, which selects certain application scenarios and appropriate control strategies of energy storage systems, and counts the longitudinal sequential power of energy storage systems. The frequency distribution of the longitudinal time-series power value of the energy storage system is decomposed into several cloud models of different granularity, and the expected weighted sum of the normal cloud model groups is obtained to give the typical operating curve of the energy storage system. The present invention can greatly reduce the amount of calculation, and is convenient for a clear understanding of the overall charging and discharging power of the energy storage system; the reverse cloud generator in the cloud model can convert accurate data into a cloud model represented by digital features, and realize the extraction of values ​​to concepts And conversion, that is, to realize the energy storage system charging and discharging power data mining to obtain the typical operating curve of the energy storage system.

Description

technical field [0001] The invention belongs to the technical field of power system energy storage systems, and in particular relates to a cloud model-based mining method for typical curves of energy storage systems. Background technique [0002] The volatility, intermittence and unpredictability of renewable energy power generation will have a certain impact on the operation of the existing power system. The energy storage system has fast response and dynamic adjustment capabilities, which can effectively improve the friendliness of the new energy power system. [0003] At present, the research on the charging and discharging power of the energy storage system is concentrated on the aspects of optimal control and capacity configuration, and less attention is paid to the excavation of typical operating curves. huge problem. Mining and determining the typical operating curve of the energy storage system in the application scenario is to extract and summarize the operating c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00G06Q50/06
Inventor 韩晓娟赵泽琨籍天明刘大贺
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)