Novel Reference Method for the Characterization of PD Measuring Systems Using HFCT Sensors

Area of Science:

• Electrical Engineering
• Materials Science
• Asset Management

Background:

• High-voltage (HV) electrical systems face operational stresses leading to defects and failures.
• Early detection of incipient defects is crucial to prevent failures, human risks, and economic losses.
• On-line partial discharge (PD) measurement is an efficient technique for monitoring dielectric status in HV installations.

Purpose of the Study:

• To present a novel method for the complete and standardized characterization of PD measuring systems.
• To address the difficulties in characterizing PD systems due to lack of reference procedures and testing drawbacks.
• To adapt the method for on-line PD measurement systems using high-frequency current transformer (HFCT) sensors.

Main Methods:

• Development of a novel, standardized method for characterizing PD measuring systems.
• Utilization of a scale modular test platform to simulate real on-site measuring conditions.
• Application of the method to characterize systems operating in on-line applications with HFCT sensors.

Main Results:

• Demonstration of a convenient and advantageous method for PD measuring system characterization.
• Validation of the modular test platform's capability to simulate on-site HV insulated distribution line conditions.
• Successful practical characterizations showcasing the method's effectiveness.

Conclusions:

• The proposed method provides a standardized approach for complete PD measuring system characterization.
• The modular test platform effectively simulates real-world conditions for testing.
• This approach facilitates more reliable and cost-effective PD system evaluation, enhancing HV asset management.