Research on Non-Invasive Floating Ground Voltage Measurement and Calibration Method
نویسندگان
چکیده
Voltage measurement is an important part of power system operation, and non-intrusive voltage sensors have the advantages low insulation difficulty, simple structure, easy loading unloading, high construction safety, which become a new direction for measurement. Based on principle electric field coupling, this paper constructs floating ground three-capacitance model, can complete accurate without connecting with line to be measured earth in process. In measurement, change object or environment will cause coupling capacitance, leads uncertainty transmission relationship sensor large error results. order solve problem, method calibration proposed paper. By sampling capacitance parallel between two electrodes sensor, changing value, establishing input output equation, value under different operating conditions are solved. addition, often several orders magnitude larger than sensor’s own making division ratio significantly higher more conducive voltages. The experimental results show that less 2%, verifies feasibility accuracy
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ژورنال
عنوان ژورنال: Electronics
سال: 2023
ISSN: ['2079-9292']
DOI: https://doi.org/10.3390/electronics12081858