Calibration of a sensor for an ion electric field under HVDC transmission lines

Abstract

With the development of high-voltage direct-current (HVDC) transmission projects, the issue of electromagnetic compatibility has become more and more severe, especially the synthetic ion flow electric field. The DC electric field is inseparable from the equipment insulation, the safety of the system operation, and effects on organisms nearby. The measurement of the synthetic electric field of ion flow has been a major difficulty due to the influence of ion currents and distorted field. A differential electric field sensor for measuring the synthetic electric field is proposed. The calibration method and the experimental device for the measurement of the air synthetic electric field of ion flow are presented. Calibration experiments show that the calibration method is practical and effective, and the test result from the sensor is in good agreement with the theoretical value. The experiments in the library show the validity of the calibration method and the excellent performance of the sensor.

Keywords

• electric sensing devices
• electric field measurement
• electric fields
• HVDC power transmission
• electromagnetic compatibility
• calibration
• power transmission lines
• experimental device
• system operation safety
• equipment insulation
• electromagnetic compatibility
• calibration experiments
• air synthetic electric field
• calibration method
• differential electric field sensor
• distorted field
• ion currents
• DC electric field
• synthetic ion flow electric field
• high-voltage direct-current transmission projects
• HVDC transmission lines