Temperature monitoring of Dry type transformer is an important part to ensure its safe and stable operation. The following is a detailed explanation of how to monitor the temperature of Dry type transformer:
1. Importance of temperature monitoring
During the operation of Dry type transformer, the temperature of the transformer rises due to the heat generated by the current passing through the winding. If the temperature is too high, it will not only affect the insulation performance of the transformer, but also accelerate the aging of the insulation material and even cause failures. Therefore, it is of great significance to monitor the temperature of Dry type transformer, which can timely discover and deal with potential problems and ensure the safe operation of the transformer.
2. Methods of temperature monitoring
Hot spot temperature monitoring: Hot spot temperature refers to the highest temperature on the outer surface of the transformer, which often appears in the excitation side coil or the protruding part of the core. By measuring the hot spot temperature, the temperature of other parts can be inferred, and the specific value of the transformer overload capacity can be calculated based on the hot spot temperature. This method requires professional hot spot temperature measuring instruments, such as infrared thermometers.
Thermometer monitoring: Install thermometers such as platinum resistance thermometers, thermocouples and thermistors at different parts of the transformer to measure the temperature changes inside the transformer in real time and record them. Analyze the operation of the transformer according to the recorded data, detect temperature anomalies in time and take corresponding measures.
Intelligent temperature control system: Modern Dry type transformers are often equipped with intelligent temperature control systems, which monitor the transformer temperature in real time through temperature sensors and transmit temperature information to the controller. The controller adjusts the working state of the cooling equipment according to the set temperature threshold and control algorithm to ensure that the transformer operates within a safe temperature range. The intelligent temperature control system also has the function of recording the historical temperature data of the transformer, which is convenient for long-term analysis and evaluation of the temperature of the transformer.
3. Precautions for temperature monitoring
When performing temperature monitoring of Dry type transformers, the following points should be noted:
Ensure the accuracy and reliability of the temperature monitoring equipment, and perform regular calibration and maintenance.
According to the actual operation of the transformer, reasonably set the temperature threshold and alarm function to detect and deal with temperature anomalies in time.
When performing temperature monitoring, relevant safety regulations should be observed to ensure the safety of personnel and equipment.
In summary, temperature monitoring of Dry type transformers is an important means to ensure their safe and stable operation. By adopting appropriate temperature monitoring methods and equipment and strictly following relevant precautions, potential problems can be discovered and dealt with in a timely manner to ensure the long-term stable operation of the transformer.
