Flanged oil tank cover and hot-spot temperature online monitoring method thereof

Abstract

The invention discloses a flanged oil tank cover and a hot-spot temperature online monitoring method thereof, which belongs to the technical field of the design, manufacturing and signal monitoring of a transformer. The oil tank cover of the transformer is of a rectangular shape, four edges of the cover are bent towards the back surface of the oil tank cover and vertical to the plane on which the oil tank cover is arranged; the length of a bending part is greater than the length of a bolt, and joints on four corners of the bending part is smoothly welded, so that dust, rainy water and the like can be prevented from entering the oil tank; and the mechanical strength and the safety of the transformer oil tank cover can be enhanced, and the appearance of the oil tank cover is simpler and more attractive. By adopting the a soft measurement technology, a radial basis function (RBF) neural network model is built by capturing relevant information of the transformer such as real-time voltage, current, magnetic flux and leakage flux so as to realize the online monitoring of the hot-spot temperature of the transformer. The flanged oil tank cover and the hot-spot temperature online monitoring method are widely applied to an electric power system and especially to a new energy power generation system.

Description

technical field [0001] The invention discloses an on-line monitoring method for a folded oil tank cover and its hot spot temperature, and belongs to the technical field of transformer design and manufacture and signal monitoring. technical background [0002] The power transformer is a high-voltage electrical equipment that transmits electric energy in the power system, and its performance directly affects the safe and stable operation of the power system. Numerous studies have found that transformer winding temperature, especially winding hot spot, has become a decisive factor for transformer safety, economic operation and service life. The end of life of most transformers is due to the loss of proper insulation capacity, and the most important factor affecting the insulation capacity is the winding temperature of the transformer during operation. Using a winding thermometer to monitor the winding temperature during operation helps the transformer achieve its expected desi...

AI Technical Summary

Problems solved by technology

Obviously, taking the oil temperature of the top layer of the transformer as the switching number to ensure the safe operation of the transformer cannot protect the safe and reliable operation of the transformer in a timely and effective manner.

In addition, when the transformer is installed and lifted, all the gravity acts on the box cover, which easily deforms the box cover

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