采用响应面法-几何特征模拟电荷法的电场数值求解及精度验证

Numerical Solution and Accuracy Validation of Electric Field Using Response Surface Methodology and Geometric Feature Charge Simulation Method

为解决模拟电荷法（charge simulation method,CSM）前处理调整工作烦冗的不足,提升高压电器电场数值计算的精度和效率,提出采用响应面法（response surface methodology,RSM）和几何特征模拟电荷法（geometric feature charge simulation method,GFCSM）相结合的方法对高压电器进行电场数值计算。以典型电极、40.5 kV真空断路器灭弧室（vacuum interrupter,VI）和550 kV SF6断路器灭弧室作为研究对象,应用RSM-GFCSM方法求出整个场域的电场分布,研究结果表明：对球/球典型电极进行电场数值求解时,采用RSM-GFCSM方法计算所得的电场强度最大值为4.32 V/cm,同CSM相比更接近理论值;采用CSM和RSM-GFCSM方法对真空和六氟化硫断路器灭弧室分别进行电场数值求解时,通过比对电场计算误差值可以看出,RSM-GFCSM计算精度高,计算工作量小,为多重介质、复杂电器结构开域电场数值仿真模拟提供了新方法。

To solve the complicated pretreatment adjustment work of charge simulation method（CSM）, and to improve the numerical calculation accuracy and efficiency of high-voltage electrical apparatus electric field,we adopted the combined method of response surface methodology（RSM） and geometric feature charge simulation method（GFCSM） to conduct the electric field numerical calculation of high-voltage electrical apparatus. Taking a typical electrode, 40.5 kV vacuum interrupter（VI）, and 550 kV of SF6 circuit breaker arc-extinguishing chamber as the research objects, we used the RSM-GFCSM to solve the electric field distribution of the whole field. According to the research results, as for the electric field numerical solution of ball/ball typical electrodes, the maximum electric field strength calculated using RSM-GFCSM was 4.32 V/cm, being closer to the theoretical value than the results calculated using CSM. When CSM and RSM-GFCSM method were used for solving the electric field of VI and 550 kV of SF_6 arc-extinguishing chamber, the comparison results of electric field calculation error values showed that RSM-GFCSM had high calculation accuracy and small computing workload. Therefore, RSM-GFCSM provides a new method for the open domain electric field numerical simulation of electrical apparatus with multiple media and complex structure.