A Non-Contact Voltage Sensor Used in Distribution Network

Due to the limitations of the application of direct voltage measurement, many testing subjects have to be tested for many times in the testing process such as electric power construction, field electric power maintenance, daily operation of equipment and intelligent power supply system, which will affect the power supply reliability of urban power grid. In addition, it is limited by the conditions allowed by users, which makes the efficiency of electric power measurement low and increases the risks in testing. In order to measure the voltage without breaking the insulation layer of low-voltage distribution network, this paper presents an indirect voltage measurement method. In-depth research is carried out in the application design of non-contact voltage measurement, and the index performance of the designed product is verified. This method has a positive effect on the application and popularization of non-contact voltage measurement technology products in the digital field. Finally, the field measurement of non-contact voltage is carried out through a prototype, and the measurement error is controlled within a reasonable range according to the test results, thus demonstrating that the non-contact voltage measurement method proposed in this paper has the value of popularization and application.