用于高压监测应用的校准单触点电压传感器
Calibrated Single-Contact Voltage Sensor for High-Voltage Monitoring Applications
摘要：
介绍了一种单触点电压传感器，用于精确测量一对导体上的交流电压。该传感器的设计是由远程监控应用的高压输电线路的精确电压测量是必需的。传感器的主体通过电气和机械方式连接到单个导体：中性导体或高压导体。附接到传感器的电容感测板使用对非接触线路的杂散电容来创建电容分压器。一个非常高阻抗的缓冲器用于测量分压器输出端的电压，并估计线电压。这项工作的一个重要部分包括校准传感器的方法，这样就可以在不知道导体的确切几何形状的情况下进行盲电压测量。该设计的其他重要方面包括一个两级分压器，用于保持精度和增加传感器的电压范围。这项工作得到了广泛的数值模拟模型的支持，这些模型用于确定传感板的最佳设计，并评估对不同配置（包括导体间距和离地高度）的灵敏度。对于精确到1%的校准值，可以以10%的精度测量线电压。本文介绍了传感器的理论，设计和实验验证高达7.5 kVrms的线电压。
英文摘要：
A single-contact voltage sensor designed for accurate measurements of ac voltages across a pair of conductors is described. The sensor design is motivated by remote monitoring applications where accurate voltage measurement of high-voltage transmission lines is required. The body of the sensor is electrically and mechanically attached to a single conductor: either the neutral or high-voltage conductor. A capacitive sensing plate attached to the sensor creates a capacitive voltage divider using the stray capacitance to the non-contacted line. A very high-impedance buffer is used to measure the voltage across the divider output and estimate the line voltage. An important part of the work includes a method of calibrating the sensor such that blind voltage measurements can be made without knowing the exact geometry of the conductors. Other important aspects of the design include a two-stage voltage divider for retaining accuracy and increasing the voltage range of the sensor. The work is supported by extensive numerical simulation models which were used to determine the optimum design for the sensing plate and to evaluate the sensitivity to different configurations including conductor spacing and the height above ground. For calibration values which are accurate to 1%, the line voltage can be measured with an accuracy of 10%. The paper describes the theory, design, and experimental verification of the sensor up to a line voltage of 7.5 kVrms.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
