Distribution transformer fault detection method and detection device

A distribution transformer and fault detection technology, which is applied in the field of distribution transformer fault detection methods and detection devices, can solve the problems of increasing personnel density, increasing labor costs, and different ambient temperatures, so as to speed up heat dissipation efficiency, reduce heat accumulation, The effect of temperature uniformity
CN114252811AActive Publication Date: 2022-03-29STATE GRID SHANDONG ELECTRIC POWER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STATE GRID SHANDONG ELECTRIC POWER
Publication Date
2022-03-29

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Abstract

The invention discloses a distribution transformer fault detection method and device in the technical field of fault detection. The distribution transformer fault detection device comprises a distribution transformer, a mutual inductor, an infrared temperature detector and a cooling mechanism. A primary side three-phase winding and a secondary side three-phase winding are arranged in the distribution transformer; the mutual inductor and the infrared thermoscope are respectively arranged beside the primary side three-phase winding and the secondary side three-phase winding; the cooling mechanism comprises a cooling mechanism and a detection mechanism; the cooling mechanism and the detection mechanism are respectively arranged at the lower end of the distribution transformer, and the mutual inductor is externally connected with an online detection system; the mutual inductor is used for detecting electrical signals of the primary side three-phase winding and the secondary side three-phase winding; the on-line detection system is used for receiving electrical signals of the primary side three-phase winding and the secondary side three-phase winding to calculate the loss power change rate of the distribution transformer and determining the maintenance strategy of the distribution transformer according to the loss power change rate.
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Description

technical field

[0001] The invention relates to the technical field of fault detection, in particular to a fault detection method and a detection device for a distribution transformer. Background technique

[0002] Distribution transformers (referred to as distribution transformers, 35KV and below, mainly 10KV) are distributed in every corner of towns and villages, with a large number and complex distribution. As the core equipment in the power system to realize electric energy conversion, the distribution transformer, once it fails, will cause power outages, affecting people's normal life, and cause serious accidents such as fires and explosions, causing major economic losses.

[0003] The traditional fault detection of distribution transformers mostly monitors the temperature and power consumption in the transformer through sensors, and then sends out alarms, and then eliminates the faults manually; this method has the following disadvantages. First, it is susceptible to e...

Claims

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