Optimization of field grading for a 1000 KV wide-band voltage divider |
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Affiliation: | 1. School of Technology, Beijing Forestry University, Beijing, Beijing, China;2. Jiangsu Yuege Intelligent Equipment Co., Ltd, Nantong, Jiangsu, China |
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Abstract: | An HVDC reference voltage divider has been designed for high accuracy and wide-band measurements up to 1000 kV. To maintain wide-band characteristics, field distribution must be optimized in order to minimize the response time of the divider. To compensate the stray capacitance, a capacitive path that surrounds the resistive reference divider is added to function as a shield. Optimal capacitance values producing a matched distribution are obtained using 3D FEM simulations. Factors affecting the performance of the divider are assessed by simulating multiple scenarios representing different practical considerations in real-life applications. |
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Keywords: | HVDC transmission Electromagnetic fields Finite element methods Voltage dividers Voltage measurement |
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