Analysis and Protection Measures for Overvoltage Breakdown of Control Relay in High Voltage Breaking Test
摘要
High voltage breaking test is an important inspection method for the quality, operating characteristics, and operational reliability of high-voltage circuit breakers and other switchgear products. During the testing process, damage to the control relay may occur due to voltage spatial coupling or aging of the closing circuit breaker, leading to delays in the test and posing safety hazards. This article summarizes the implementation process of the control function for high-voltage disconnection test, analyzes the reasons for the damage of the control circuit relay, provides protection and early warning measures, and ensures the safe and orderly conduct of high-voltage disconnection test.