Due to the complexity of the high-voltage experiments and the influence of unknown stray capacitance, the completed high-voltage divider is not a patch on it has been planned. The solution of the leading ANSOFT based on physical prototype could simulate and verify the design with lightning speed and perfect accuracy; but its own modeling function is too limited to meet the engineering modeling demand well. With the powerful parametric design capabilities, the modeling software AutoCAD could simulate complex form. A combination of CAD and ANSOFT is proposed in this paper: at first make 3-D model of the high-voltage divider based on AutoCAD, then by the interface between them, the model is imported to the Maxwell to simulate the magnetic field distribution, which is the finite element analysis software of static-magnetic field. According to the results, this method could effectively improve the modeling speed and quality, and simplify the analysis workload.

The stability of the high voltage arm resistors has a strong influence on the performance of the resistance high DC voltage divider. So by analyzing the main parameters that affect the resistor value change, including voltage coefficient, power coefficient and so on, a new matching method is proposed to make a high precision high DC voltage divider in this paper. Based on the principle of pairing the resistors and adjusting the big and small ones, a high precision high DC voltage divider could be made with the voltage variation less than 0.005%, even on the condition of using high voltage coefficient and power coefficient resistors.