As a critical equipment in the power system, the safe and stable operation of Container Type Substation directly affects the reliability of power supply. The following are the key points to pay attention to during the maintenance process, covering daily inspections, regular maintenance, and safe operations. I hope the following introduction can provide users with reference.
1、 Key points for daily inspection of Container Type Substation
Container Type Substation Appearance Inspection
Box integrity: Check whether the box is deformed or corroded, whether the door lock is normal, and whether the rain and dust prevention measures are effective. Warning signs: Confirm that the safety warning signs are clear and not detached. Ventilation system: Check if the ventilation openings are blocked and if the cooling fan is running properly.
Environmental monitoring
Temperature and humidity: The temperature inside the box should be controlled within the allowable range, and the humidity should be ≤ 85%. Foreign object intrusion: Clean up debris, bird nests, or small animals inside the box to prevent short circuit risks.
Operation status monitoring box type substation
Instrument reading: Record parameters such as voltmeter, ammeter, power factor meter, etc. Any abnormal fluctuations should be analyzed in a timely manner. Indicator light status: Confirm that the running and fault indicator lights are displaying normally.
2、 Container Type Substation Regular Maintenance Project
Container Type Substation Electrical Component Maintenance
transformer:
Check the oil level and temperature. Clean the porcelain bushing and check for discharge marks or cracks.
High voltage switch cabinet:
Check if the contacts are in good contact and if the operating mechanism is flexible. Test the mechanical characteristics such as opening and closing time and speed of the circuit breaker.
Low voltage distribution cabinet:
Tighten the busbar connection bolts and check if the insulation components are aging. Test the sensitivity of the protective device.
Secondary system maintenance
Relay protection device: Regularly verify the set value to ensure the accuracy of the action. Automation equipment: Check whether the communication module and remote monitoring function of the box type substation are normal. Box type substation battery pack: Measure the voltage of individual batteries and check if the connecting wires are loose.
Preventive testing of box type substation
Insulation resistance test: Use a megohmmeter to measure the insulation resistance of transformers and cables. Voltage withstand test: Conduct power frequency voltage withstand test on high-voltage equipment to verify insulation strength. Grounding resistance test: Ensure that the grounding system resistance is ≤ 4 Ω (may vary according to standards).
3、 Container Type Substation Security Operation Specification
Power outage operation for Container Type Substation
Strictly follow the sequence of "first disconnect the load side, then disconnect the power supply side", and hang the grounding wire after verifying the electricity. Use insulated tools and wear protective equipment.
Live working
Only professional personnel are allowed to operate, use specialized tools, and maintain a safe distance. Prohibit simultaneous contact with conductors of different potentials to avoid phase to phase short circuits.
Maintain records
Detailed records of maintenance time, content, identified issues, and handling results. Establish equipment health records to provide a basis for life assessment and replacement.
Container Type Substation ensures long-term stable operation of equipment through daily inspections, regular maintenance, standardized operation, and rapid response to faults.
