Summer is the peak period of electricity demand and also the time when transformers experience the highest operating pressure. In high temperature environments, transformers are prone to overheating, excessive load, and other problems, which in turn affect their service life and safety performance. Therefore, when operating transformers in summer, special attention should be paid to the following aspects:

1、 Strengthen temperature monitoring

1. Check the oil level, oil quality, and oil temperature of the oil immersed transformer (the oil temperature should not exceed 85 ℃): Check the oil level gauge daily, and the oil level in summer should be at the upper limit of the standard range (considering thermal expansion and contraction). If the oil level is too low or the oil color turns black, it is necessary to replenish or replace the oil in a timely manner; High temperature accelerates oil oxidation, and regular oil quality analysis is conducted to check indicators such as insulation strength, dielectric loss, acid value, moisture, impurities, and gas content in the oil.

2. Dry type transformers should pay attention to the winding temperature (usually not exceeding 130 ℃), whether the insulation is carbonized or cracked, and whether the fan starts and stops normally.

3. Use an infrared thermometer to regularly scan the high voltage side, low voltage side wiring terminals, busbar connections, and other heat prone areas (be alert when the temperature difference exceeds 30 ℃ or the temperature exceeds 90 ℃).

2、 Ensure good ventilation and heat dissipation

1. In high temperature environments during summer, strengthen heat dissipation inspections, promptly clean up blockages around transformers, remove dust and debris from transformer casings, heat sinks, and fan blades, and ensure smooth ventilation and heat dissipation channels.

2. Adopt measures to increase ventilation and heat dissipation equipment, improve heat dissipation efficiency, ensure sufficient ventilation space around, and avoid overheating caused by poor heat dissipation in high temperature environments.

3、 Reasonably manage load

During the peak electricity consumption period in summer, adjust the load according to the actual situation, reduce the load rate of the transformer, avoid overload operation, and prevent overheating problems caused by excessive load.

2. By monitoring the load current in real-time through the monitoring system, for transformers with long-term high loads, it is possible to apply for adjusting the distribution of electrical loads or temporarily adding transformers for diversion.

4、 Regular maintenance and inspection

1. Check the appearance, wiring, oil level, insulation integrity, temperature, and environment of the transformer, and promptly identify and address potential safety hazards.

2. Insulation state inspection: Check for cracks, discharge marks, or aging damage in the sleeve and cable joints, with a focus on whether the surface of the porcelain bottle is clean to avoid flashover caused by dirt.

3. Tighten loose contacts, remove oxide layer, and replace contacts with poor contact in a timely manner to avoid overheating or even fire caused by increased contact resistance.

4. Remove weeds, shrubs, and flammable materials within 5 meters around the transformer and maintain a fire separation distance; Check if the protective fence is intact to prevent small animals from accidentally entering and causing short circuits.

5. Check the cooling equipment: Ensure that the fans, oil pumps, and other equipment in the cooling system are operating normally. If there are any malfunctions, repair or replace them in a timely manner.

5、 Optimize operational management and emergency response

1. Encrypt inspection frequency: Increase the number of special inspections during high temperature periods (such as afternoon to night), record data such as oil temperature, load, and sound, compare historical trends, and promptly detect abnormalities.

2. Focus on the operation status of old and overloaded transformers, and configure wireless temperature sensors to achieve 24-hour online monitoring.

3. Improve emergency plans, coordinate with dispatch departments, and if continuous high temperatures are predicted, develop power rationing and peak shaving plans in advance to avoid transformer burnout due to extreme loads.

4. Reserve spare fans, insulation oil, emergency lighting and other materials, and develop a power outage repair process.

The high temperature season is a high-risk period for transformer failures, and the principle of "prevention first, monitoring as a supplement, and emergency response in place" should be followed. In case of sudden emergencies, one should immediately stay away and report to the power department. Do not handle them without authorization!

As a professional manufacturer of transformers, Zhongyi Electric is willing to work with you to build a strong safety net for high-temperature electricity consumption and provide protection for your production and operation.

Free technical consultation: Call the hotline 133133263585 for customized electricity advice.