Transformer substation power failure detection device

Abstract

The invention discloses a transformer substation power failure detection device and belongs to the field of power failure detection. The device comprises a moving seat, a cabin is rotatably mounted onthe top surface of the moving seat, the top surface and one side of the cabin are open, one end of a folding arm is hinged in the cabin, a C-shaped iron core is fixedly mounted at the other end of the folding arm, and an elastic sleeve made of non-magnetic materials sleeves the periphery of the C-shaped iron core. An electromagnetic coil is wound around the periphery of the elastic sleeve, a plurality of first wire rings made of non-magnetic materials are fixedly installed on the outer ring of the elastic sleeve, a plurality of second wire rings are fixedly installed on the folding arm, the two ends of the C-shaped iron core are fixedly connected with ends of first wire ropes respectively, and the first wire ropes penetrate through the corresponding first wire rings in sequence. And the other ends of the first ropes are fixedly connected with one end of the same second wire rope respectively. According to the device, the opening and closing of the C-shaped iron core are achieved through the stretching and retracting of the folding arm, the locking of a first wire wheel is flexibly achieved by controlling movement of a first strip-shaped block, a structure is prevented from being arranged on the C-shaped iron core, and the situation that the gravity center is not stable is avoided.

Description

technical field [0001] The invention belongs to the field of power fault detection, in particular to a substation power fault detection device. Background technique [0002] The single-phase ground fault detection technology has been continuously researched and discussed at home and abroad. The dual-frequency signal detection and positioning method has been proposed in China. Based on the different impedance properties of the faulty line and the non-faulty line, the different ratio of the signal current is used as the criterion, which is fast and accurate. To select the ground fault line and locate the fault point, it requires the inspectors to hold the detector and move it for detection, which requires a lot of work intensity, especially when detecting overhead lines, this working method is no longer suitable for the current unmanned maintenance environment, but lacks an effective and economical fault detection method, so it needs to be solved urgently. Contents of the in...

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Problems solved by technology

[0002] The single-phase ground fault detection technology has been continuously researched and discussed at home and abroad. The dual-frequency signal detection and positioning method has been proposed in China. Based on the different impedance properties of the faulty line and the non-faulty line, the ratio of the signal current is different as the criterion, which is fast and accurate. Ground fault line selection and fault point location need to be carried out by inspectors holding the detector and moving it. The work intensity is relatively high, especially when inspecting overhead lines. This working method is not suitable for the current unmanned maintenance. large environment, but lacks an effective and economical fault detection method, therefore, it is urgent to solve

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