Cable sheath circulation online monitoring system, such asDLHL100The cable sheath circulation monitoring system is an important component of intelligent grid online monitoring technology, widely used in6.6kVMonitoring of protective layer circulation of power cables for transmission and distribution above.This system effectively prevents sudden accidents by monitoring the grounding current of the metal protective layer of high-voltage cable lines in real time, and has cable anti-theft monitoring function. However, any system may encounter malfunctions during long-term operation, so daily maintenance is crucial.

Common Faults

Sensor malfunctionThe protective layer current sensor and load current sensor may have inaccurate or ineffective measurements due to environmental factors (such as humidity, high temperature) or long-term use. If the sensor housing is made of non corrosion-resistant materials, it may also be damaged due to corrosion.

Communication failure: The system relies on wireless or wired communication to transmit data. If the communication module fails or the signal is weak, it will cause data transmission interruption or delay. In addition, the public network4GCard arrears or wireless power supply4GUnstable network can also affect communication quality.

Power failure: The system usually uses solar energy+Battery powered mode, if the solar panel is obstructed, the battery is aging, orCTUnstable power supply can lead to insufficient power supply to the system, affecting normal operation.

System self diagnosis fault: Although the system has self diagnosis function, if the self diagnosis module itself fails, it may not be able to accurately detect and report system problems.

routine maintenance

Regularly inspect sensors: Regularly check the measurement accuracy and appearance of sensors to ensure that they are not corroded or loose. Calibrate or replace as necessary.

Maintain smooth communication: Regularly check the working status of the communication module to ensure stable wireless signals. For wired communication, check if the line connection is secure and undamaged.

Power management: Regularly clean the solar panels to ensure that their surfaces are unobstructed. Check the battery level and replace aging batteries in a timely manner. ForCTThe power supply method ensures the stability and reliability of the power supply circuit.

System self diagnostic check: Regularly check whether the system self diagnostic function is normal, to ensure that the system can accurately detect and report faults.

Through the above daily maintenance measures, the failure rate of the online monitoring system for cable sheath circulation can be effectively reduced, ensuring its long-term stable operation and providing strong guarantees for the safe operation of the smart grid.