一种同步电机短路电流运算曲线的最优参数获取方法、系统、计算机设备及存储介质

By collecting and optimizing the electromagnetic parameters of synchronous motor samples, and finding the optimal parameters to plot the calculation curve, the problem of complex and inaccurate calculation of short-circuit current of synchronous motors was solved, achieving higher calculation accuracy and engineering design accuracy.

CN121636858BActive Publication Date: 2026-07-17POWERCHINA BEIJING ENG CORP

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
POWERCHINA BEIJING ENG CORP
Filing Date
2025-11-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies for calculating the short-circuit current of synchronous motors suffer from computational complexity and insufficient accuracy. In particular, the electromagnetic parameters of each synchronous motor are different, resulting in large errors that cannot meet the accuracy requirements of engineering design.

Method used

By collecting electromagnetic parameters from multiple sets of synchronous motor samples, calculating their arithmetic mean as the initial value, and then finding the optimal parameters by adjusting the trial step size and direction of the electromagnetic parameters, the optimal operation curve is plotted, and statistical methods are used to optimize the parameters to reduce deviation and improve calculation accuracy.

Benefits of technology

The calculation accuracy of the calculation curve method has been improved, the error has been reduced, and a more accurate basis for engineering design has been provided. Error analysis shows that the error between the calculated short-circuit current and the actual short-circuit current is within 1.4203%, accounting for 73%.

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Abstract

本发明提供了一种用于同步电机短路电流运算曲线绘制的最优参数获取方法、系统、计算机设备及存储介质,属于电力行业短路电流计算领域。准备多个同步电机样本的电磁参数;求取电磁参数算术平均值作为初始值;设定计算短路电流不同外接电抗和计算时刻;利用最小二乘法构建目标函数求取初始值与电机样本电磁参数在不同外接电抗和不同计算时刻的偏差值;将初始值逐一增加或减小,重新得到一组电磁参数,再次求取偏差值;通过改变电磁参数变化方向或减小试探步长,直到得到的偏差值与上一次的偏差值相比均不再减小时,则该组电磁参数为寻找到的最优参数。本发明能提供基于最优参数绘制的运算曲线,得到的短路电流值可以满足工程使用精度要求。
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