Isolating switch dynamic capacity-increasing operation prediction method and device, apparatus and storage medium

Abstract

The invention discloses an isolating switch dynamic capacity-increasing operation prediction method and device, an apparatus and a storage medium, wherein the method comprises the steps of building astatic thermal circuit model according to a heat dissipation path of an isolating switch; performing thermodynamic simulation on the isolating switch by adopting a finite element algorithm, and calculating the thermodynamic parameters of the isolating switch; correcting the dynamic thermal circuit model according to the thermodynamic parameters of the isolating switch; predicting the maximum loadsafe operation time of the isolating switch during dynamic capacity-increasing operation by adopting the corrected dynamic thermal circuit model; adopting a thermal circuit model, and combining the finite element simulation to carry out the numerical calculation on the thermodynamic parameters during the heat generation, heat conduction and heat dissipation processes of the isolating switch, so that the thermal circuit model is corrected, the calculation accuracy of the thermal circuit model is greatly improved, the calculation is quick, and the dynamic capacity-increasing safe operation timeof the isolating switch is accurately predicted.

Description

technical field [0001] The invention relates to the technical field of dynamic capacity increase of an isolating switch, in particular to a dynamic capacity increasing operation prediction method, device, equipment and storage medium of an isolating switch. Background technique [0002] As one of the most used high-voltage electrical equipment in the high-voltage power grid, the high-voltage disconnector is in the harsh operating environment of high voltage and high current, and its operation reliability and service life will directly affect the stable operation of the power grid. With the rapid development of power grid technology and the continuous improvement of the voltage level of transmission lines, higher requirements are put forward for the operating performance of high-voltage disconnectors, especially the overheating of the conductive circuit of high-voltage disconnectors. [0003] The thermal stability limit is an important parameter to limit the rated operating c...

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Problems solved by technology

At present, the commonly used numerical calculation method is to use the principles of heat transfer and fluid mechanics to obtain the hot spot temperature of the equipment by solving differential equations. suitable for engineering applications

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