基于电场逆问题的新型电子式电压互感器测量机理研究

项目名称： 基于电场逆问题的新型电子式电压互感器测量机理研究

项目编号： No.51207175

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电气科学与工程学科

项目作者： 汪金刚

作者单位： 重庆大学

项目金额： 25万元

中文摘要： 智能电网建设中，传感器的智能化、小型化、便捷化为关键环节。项目提出了一种电网中电压测量的新方法，利用电荷感应原理和电磁计算方法研究电子式高压输变电设备的新型电压传感器。项目针对电压测量方法进行了创新，测量高压导线附近固定位置与方向的即时电场值，通过电场逆问题计算推算出输电线路的即时电压，通过电场仿真计算并结合试验数据，进行数据补偿处理与标定计算，获得电压值快速工程算法，实现了电子式非接触式电压互感器。最后实现电压电流一体化并数字化设计，进行工艺设计成型。项目通过模型仿真与分析计算，对研制的电压互感器在强电磁场干扰、电场畸变、温湿度变化、邻相电场影响及导线舞动等情况下的机理研究分析，通过数据补偿算法达到测量精度。新型传感器频带宽、体积小、安装维护方便，为智能电网互感器解决方案提供了新思路。

中文关键词： 电场耦合；非接触测量；电压分解；分布参数；电压测量系统

英文摘要： The intelligence, miniaturization and convenience of the sensor are key factors in the construction of smart grid. In the project, a new measuring method to the voltage in grid will be proposed and a novel electronic potential transformer on the high voltage power transmission equipment will be studied using charge induction principle and electromagnetic computing method. The voltage measuring method will be improved in the project. The real-time electric field strength in the fixed position and orientation near the high voltage transmission lines will be measured and the real-time voltage will be calculated by computing the electric field inverse problem. According to the electric field simulation with test data, the data compensation and calibration calculation will be carried out. With the rapid engineering method on computing voltage, a non-contact electronic potential transformer will be developed. Finally, the integration of the voltage and current and digital design will be carried out and the formed products will be manufactured. Based on the simulation and calculation of the model, the measuring mechanism of the potential transformer will be analyzed taking account of strong interference from electromagnetic field, electric field distortion, changes of temperature and humidity, impact between adjacent e

英文关键词： Electric Field Coupling；Non-contact Measurement；Voltage Decomposition；Distribution Parameter；Voltage Measurement System