The maintenance of container substations requires comprehensive consideration of their compactness, environmental adaptability, and electrical system safety. The following are key points to note during maintenance:
1、 Routine inspection and patrol of container converting substation
Regular inspection of container converting substation
Daily/weekly inspection: Record operating parameters (voltage, current, temperature, humidity, etc.) and observe for any abnormal noise or odor.
Monthly inspection: tighten electrical connection points, clean dust, and check insulation components for cracks or aging.
Annual inspection: including equipment performance testing, protection device calibration, etc.
Structural integrity, check the sealing of the box, and prevent rainwater leakage; Confirm that the door lock, hinge, and ventilation opening are intact. Anti corrosion coating on the box body, timely repair of corroded areas to avoid a decrease in structural strength.
2、 Container converting substation environment control and heat management
Temperature and humidity monitoring
Ensure that the air conditioner and exhaust fan are operating normally. Install temperature and humidity sensors and link ventilation equipment to prevent condensation from causing short circuits.
Maintenance of the cooling system, regularly clean the dust on the cooling fan, air conditioning filter, and cooling channel to avoid blockage. Check whether the heat sink of high-power equipment such as transformers and inverters has accumulated dust.
3、 Container converting substation electrical equipment maintenance
Insulation and grounding, insulation resistance testing is conducted annually. Check if the grounding grid connection is reliable
Calibration of protective devices, regular testing of relay protection devices and circuit breaker operating characteristics to ensure normal tripping function. The status of lightning protection devices should be checked before the thunderstorm season.
Battery system (if any), perform charge and discharge tests on UPS or DC screen batteries, and replace batteries with bulges or leaks. Clean the battery terminals to prevent poor contact caused by corrosion.
4、 Container converting substation security measures
To prevent moisture and small animals, install an automatic dehumidifier or heater in damp areas and place moisture-proof agents inside the box. All cable entrances are sealed with fireproof mud, and metal rat proof nets are installed on ventilation openings.
Fire and explosion prevention, regularly check the pressure and expiration date of fire extinguishers to ensure the normal state of gas fire extinguishing systems. Do not store flammable materials in the box and monitor the concentration of flammable gases.
5、 Container Conversion Substation Operation and Maintenance Specification
Power off operation: Before maintenance, the power supply must be cut off and tested, a "Do not close" warning sign must be hung, and a lock and tag system must be implemented. High voltage operation requires certified personnel to wear insulation protective equipment.
Personnel training and emergency response, maintenance personnel should be familiar with electrical drawings and emergency plans.
In addition, attention should be paid to the establishment of container converting substation maintenance files, recording the results of each inspection, troubleshooting, and replacement of spare parts. Use monitoring data to predict equipment usage time and develop preventive maintenance plans. Ensure safe and reliable power supply, and extend usage time.
