Complex time-varying energy system energy configuration method based on threshold method

Abstract

The invention belongs to the field of energy system design, and particularly relates to a complex time-varying energy system energy configuration method based on a threshold method, which comprises the following steps: establishing an energy load spectrum of system operation; obtaining a load valley value and a peak value; presetting rated power Pe and a capacity C of an energy storage system, preliminarily calculating upper and lower power thresholds P1 and P2, and calculating energy S1 needing to be released in a P1 time period and storable energy S2 in a P2 time period; iteratively calculating the time points when S1 and S2 are the same with the capacity C of the energy storage system; and obtaining final upper and lower power thresholds P1 and P2 so as to obtain an overall energy configuration scheme of the system. According to the complex time-varying energy system energy configuration method based on the threshold method, calculation of the upper threshold and the lower thresholdof the system is iteratively designed based on the capacity of the energy storage system, reasonable balance of peak shifting and valley filling is achieved on the system, the operating condition ofthe system can be optimized, the weight and design margin of the system are reduced, and energy flow is reasonably distributed.

Description

technical field [0001] The application belongs to the field of energy system design, and in particular relates to an energy allocation method for complex time-varying energy systems based on a threshold method. Background technique [0002] From energy supply to execution function, the system requires power generation, transmission, transformation, energy distribution and energy consumption to be completed at the same moment, and a balance between energy supply and energy consumption must be maintained at any time; many systems have complex operating conditions, and the energy supply and demand of the system change over time The characteristics are obvious, and the peak and peak valleys of the energy demand in the whole operation process are quite different. However, the design points of the energy conversion components of the traditional system are designed according to the peak value, or the control ability of the system is increased by adding energy storage links, thereby ...

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Problems solved by technology

[0002] From energy supply to execution function, the system requires power generation, transmission, transformation, energy distribution and energy consumption to be completed at the same moment, and a balance between energy supply and energy consumption must be maintained at any time; many systems have complex operating conditions, and the energy supply and demand of the system change over time The characteristics are obvious, and the peak and peak valleys of the energy demand in the whole operation process are quite different. However, the design points of the energy conversion components of the traditional system are designed according to the peak value, or the control ability of the system is increased by adding energy storage links, thereby reducing the energy consumption of the system. Design the peak value to meet the maximum capacity requirements of the system; however, there is currently no specific method to guide how to configure the system energy, only simple addition and subtraction calculations are performed based on the energy storage and release capabilities of the energy storage device at the same peak value, and then the peak point of the system is determined. For systems with large fluctuations in operating conditions, it is easy to cause unreasonable energy allocation schemes during the system design process, resulting in excessive system design margins and increased system weight; moreover, when the system operates at the design point, the operating condition range is small, and the overall system efficiency Low

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