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Extracting the Resistive Current Component from a Surge Arrester's Leakage Current without Voltage Reference.
Vid Vončina1, Jože Pihler2, Miro Milanovič2
1Izoelektro d. o. o., 2341 Limbuš, Slovenia.
Sensors (Basel, Switzerland)
|February 13, 2021
Summary
This study introduces an online electronic device to monitor the condition of gapless Metal Oxide Surge Arresters (MOSA). It measures resistive leakage current, enabling remote condition assessment for improved power system reliability.
Area of Science:
- Electrical Engineering
- Materials Science
- Power Systems
Background:
- Metal Oxide Surge Arresters (MOSA) are critical components in power systems for overvoltage protection.
- Online monitoring of MOSA condition is essential for preventing failures and ensuring grid stability.
- Traditional monitoring methods can be limited by accessibility and remote locations of surge arresters.
Purpose of the Study:
- To develop the theoretical background and design of an electronic device for online monitoring of gapless MOSA.
- To enable continuous assessment of MOSA health through remote data acquisition.
- To improve the reliability and safety of power transmission and distribution systems.
Main Methods:
- Design and development of a specialized electronic monitoring device for MOSA.
- Integration of a communication system for remote data transmission.
- Measurement of the resistive component of leakage current as an indicator of MOSA condition.
Main Results:
- The developed device can effectively monitor MOSA condition online.
- Leakage current measurements provide a reliable method for assessing arrester health.
- The communication system facilitates remote data transfer and analysis.
Conclusions:
- The designed electronic device offers a viable solution for online MOSA condition monitoring.
- Remote assessment of MOSA health can be achieved by analyzing resistive leakage current.
- This technology enhances the predictive maintenance capabilities for power system components.
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