Energy storage device hot spot temperature determination method based on digital twinborn technology

Abstract

The invention provides an energy storage device hot spot temperature determination method based on a digital twinborn technology, and aims to solve the problems of heat storage fluid gasification, heating column damage and the like caused by overhigh temperature of a heat storage pool along with continuous expansion of new energy power generation installed capacity in China, and the problem that the hot spot temperature cannot be directly measured. A heat storage device temperature field numerical analysis model is established based on the finite element analysis technology, a fluid field and a temperature field in a heat storage pool are calculated and analyzed, the temperature of the wall face of the heat storage device is collected through optical fiber temperature measurement, and the hot spot temperature in the heat storage pool is calculated based on the digital twinning technology. The temperature of the heat storage device can be monitored in real time, the problem that the temperature of the energy storage device cannot be measured through a measuring instrument is solved, the hot spot temperature is speculated through the temperature of the low-temperature area of the wall face by means of the digital twin technology, and temperature monitoring of the energy storage device is achieved.

Description

technical field [0001] The invention belongs to the field of new energy technology, and in particular relates to a method for determining the hot spot temperature of an energy storage device based on digital twin technology. Background technique [0002] The heat source inside the electric heat storage system (energy storage device) generally selects high-temperature fluid, and uses the low-valley electric heating heat source in the power system to convert electric energy into thermal energy and store it in the heat storage battery. The system generates electricity for use. The temperature in the heat storage pool can reach hundreds of degrees Celsius. If the hot spot temperature is too high, the heat storage fluid will vaporize and explode, and the heating column will be damaged and affect the life. At the same time, the hot spot temperature cannot be directly measured because of the high temperature. [0003] Digital twin technology Since German Industry 4.0 was propose...

AI Technical Summary

Problems solved by technology

However, as a relatively new theory, digital twin does not have a relatively overall structural framework, and it is also one of the research goals to construct and improve the digital twin framework in the process of application.

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