Precautions For The Use of OLTC Oil Filled Power Transformer

First of all, the load characteristics of the on-load voltage regulating oil-immersed transformer should meet the characteristics of strong seasonality or large peak-to-valley difference, and the load change has a certain regularity. Capacitor-regulated on-load voltage regulating oil-immersed transformers have their own market to meet the differences in seasonal heavy loads or large load peaks and valleys. Every year in the hot weather in summer, farmers; air-conditioning equipment is concentrated and opened, and the power load is very large. In normal seasons, the load of the on-load voltage regulating oil-immersed transformer is only for domestic electricity, and the load is relatively light. Most of the large-capacity on-load voltage regulating oil-immersed transformers in this area will fail within a year. Time is light load state. That empty vibration (light load) loss becomes the main part of the power loss. On the other hand, it is disadvantageous to fully utilize the capacity resources of the on-load voltage regulating oil-immersed transformer. Therefore, it is more appropriate to introduce capacitor-regulated on-load voltage regulating oil-immersed transformers in these fields.

Second, considering the comprehensive economic benefits of the on-load voltage regulating oil-immersed transformer, including the selection and setting of loads (air vibration), operating costs, etc., when selecting the capacity, the functions of the on-load voltage regulating oil-immersed transformer must be fully utilized, That is, the normal operating capacity of the on-load voltage regulating oil-immersed transformer. It occupies 40-80% of the rated capacity of the on-load voltage regulating oil-immersed transformer, reducing the light load loss of the on-load voltage regulating oil-immersed transformer and the impact on the heavy-load on-load voltage regulating oil-immersed transformer. The price of capacitor-regulated on-load voltage regulating oil-immersed transformers is more expensive than that of ordinary on-load voltage regulating oil-immersed transformers. With the same capacity, the price of the no-load on-load voltage regulating oil-immersed transformer is about 2 times that of the ordinary on-load voltage regulating oil-immersed transformer. On-load voltage regulating oil-immersed transformers are more expensive. In addition, the maintenance cost of uploading on-load voltage regulating oil-immersed transformers is higher than uploading on-load voltage regulating oil-immersed transformers. Therefore, when selecting capacitors to adjust on-load voltage regulating oil-immersed transformers within a certain range, it is necessary to consider the comprehensive benefits of investment.