Intelligent distribution transformer comprising embedded sensor

Abstract

The invention discloses an intelligent distribution transformer comprising an embedded sensor, and belongs to the technical field of power equipment state monitoring. The intelligent distribution transformer comprises an oil tank, an iron core, an iron core upper clamping piece, a high-voltage winding and a low-voltage winding, and is characterized in that a plurality of temperature sensors are arranged in the high-voltage winding and an oil duct between the low-voltage winding and the iron core, a plurality of vibration sensors are arranged on the iron core upper clamping piece, and an intelligent terminal system and a plurality of partial discharge sensors are arranged in the oil tank. The temperature sensors, the vibration sensors and the partial discharge sensor are all connected with the intelligent terminal system, the intelligent terminal system is installed outside the oil tank, and the intelligent terminal system is in communication interconnection with the control center. According to the invention, real-time sensing of internal temperature, vibration and partial discharge parameters of the distribution transformer is realized, early faults can be identified in time, slight faults are positioned, eliminated and prevented from developing into power failure accidents, the service life of the distribution transformer is prolonged, and safe, stable and economical operation of a power distribution network is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of power equipment state monitoring, and relates to an intelligent distribution transformer including embedded sensors. Background technique [0002] The distribution transformer is a user-oriented device in the distribution network, which plays an important role in the transmission of electric energy. When oil-immersed distribution transformers are in long-term operation, the oil is prone to moisture, which corrodes the metal body and reduces the insulation strength, and is prone to partial discharge, which further increases the oil temperature and even causes accidents such as fire. The safe and stable operation of the entire distribution network will be affected. [0003] Common faults of oil-immersed distribution transformers include the rise of oil temperature caused by winding inter-turn, inter-layer short circuit or long-term overload, abnormal heating of the transformer; abnormal noise caused by loo...

AI Technical Summary

Problems solved by technology

Faults mostly occur inside the transformer, and have a certain cumulative effect and concealment. If minor faults are not identified and eliminated in time, they will develop into irreversible serious faults and eventually cause vicious operation accidents. Inspection of the appearance of the transformer often fails to detect and eliminate potential faults in time. When a fault occurs, the power must be cut off for emergency repairs, which affects the normal production and life of users.

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