Heat generation in Transformers

All electrical devices produce heat when they operate for long durations. Similar is the case for transformers. Power transformers give off a lot of heat from the windings when operating. The transformer temperature rise is defined as the average temperature rise of the windings above the ambient (surrounding) temperature when the transformer is loaded at its nameplate rating.

Different transformers have been rated at varied outputs and therefore work at different temperature ranges. Still, the general trend is that these devices are considered to have greater efficiency when the amount of heat generated is less.

Monitoring and controlling the temperature becomes essential for transformer operations in such cases. Given below are the several reasons why with precise transformer temperature control the process of electric supply can be improved.

Better utilization of the transformer

With the precise temperature controls known, the transformer can be operated close to its operational limits without losing much of its efficiency and life.

Optimizes sub- station  loading

Transformers work on different loads at different times of the day depending upon the energy requirements. If temperature controls are monitored, the load on the power transformers can be distributed accordingly for maximum reliability.

Assists in avoiding accidents

Proper control of the temperature ensures that the winding and the oil temperatures never exceed the prescribed limits. With proper temperature indicators installed fair warning can be provided to the operators as the power transformer starts malfunctioning.

Control data for prediction and increasing savings

The temperature control data recorded while operations can help determine the remaining lifetime of the power transformer. With better measurement instruments like modern IEDs, precise controls can be achieved with lower maintenance costs and parts availability. This saves a lot of funds in the long run.

Temperature and Efficiency

Temperature gives an estimate of how efficiently the transformer is working in a situation. Though low-temperature rises may be insignificant and can even be ignored, a higher rise in temperature means a greater load on the transformer. In such cases, the efficiency of a transformer may start getting affected. Temperature indicators are a great way of understanding such changes and managing the transformer accordingly.

A more efficient transformer generates less waste heat in the first place, but the transformer temperature rise results from not only how much heat is generated but also from how much heat is removed. This means that effective management of the generated heat can also help increase the efficiency of the power transformers.

Equitel Power is an online electric goods supplier that sells high-quality industry-standard transformer parts and other electrical equipment at very affordable prices. Precise temperature indicators help in improving several aspects of the working of a transformer to ensure a rise in performance. Good quality transformer spare parts and indicators can really help in carrying out such measurements effectively.