Method used for adjusting transformer work load

Abstract

The invention discloses a method used for adjusting a transformer work load. The method comprises steps that, a relation model between the load coefficient and the environment temperature is established when a hot spot temperature of a transformer winding reaches 98 DEG C; the hot spot temperature of the transformer winding is detected in real time; the monitored real-time hot spot temperature is contrasted with 98 DEG C, based on the contrast result, the work load coefficient of the transformer is changed to be a load coefficient corresponding to the present environment temperature in the relation model. According to the method, the hot spot temperature can be measured by employing the fiber temperature measuring technology, direct measurement is carried out, and accuracy is high. Through the method, the hot spot temperature of the winding can be guaranteed to be close to 98 DEG C as much as possible when the transformer is in operation, the access work load is maximized, the economic benefits under the condition of safety operation is further maximized, and thereby a technical problem that safety and economic performance can not be simultaneously realized because of contradictory relations among the hot spot temperature, the environment temperature and the load coefficient is solved.

Description

technical field [0001] The invention relates to the field of power transmission and distribution of smart grids, in particular to a method for adjusting the working load of a transformer based on optical fiber temperature measurement technology. Background technique [0002] When a large oil-immersed transformer is running, the winding heat will be generated due to the current flowing inside it. When the temperature of the winding rises to a certain level, it will cause the aging of the insulating paper in the transformer, resulting in a decrease in the insulation life. In severe cases, it will cause short circuit and discharge inside the transformer, and even cause the transformer to explode. [0003] On the one hand, the hot spot temperature of the transformer winding is related to the ambient temperature, and on the other hand, it is related to the load of the transformer during operation: when the ambient temperature rises, the hot spot temperature of the transformer win...

AI Technical Summary

Problems solved by technology

[0004] Generally, when the transformer is in operation, it is hoped that its operation safety can be guaranteed, that is, it is hoped to operate when the temperature of the hot spot of the winding is low, which forces the transformer to work only under a small load. In this case, the transformer load is insufficient. There is a waste of resources, and the economy of the transformer is affected; if it is operated under a higher load, the economy can be guaranteed, but the high load causes the temperature of the winding to rise so that the safety of the transformer operation cannot be guaranteed. temperature conditions that pose a safety hazard

Therefore, the relationship between the hot spot temperature of the transformer and the working load and ambient temperature makes it difficult to overcome the technical contradiction between the economy and safety of the transformer

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