Automatic oriented transformer substation partial discharge monitoring positioning device and method

Abstract

The invention relates to an automatic oriented transformer substation partial discharge monitoring positioning device and method, and belongs to the field of the power monitoring. The device comprisesan automatic orientation device, a signal collection controller, a signal processing device and an alarm circuit; the signal collection controller is used as a central processing unit to analyze an amplified and filtered abnormal signal; the signal is repeatedly sampled, analyzed, computed, transmitted, and controlled until the UHF signal time difference is within the preset threshold; the signalprocessor controls a laser head of the automatic orientation device to start, and enables the laser head to point to the partial discharge location, thereby realizing multi-directional partial discharge monitoring of an antenna array. The invention provides an automatic orientation device of partial discharge monitoring; the automatic orientation device can adjust the antenna array orientation inmulti-angle, the device can realize the function of monitoring equipment at multiple directions without installing monitoring equipment on each device needing the partial discharge monitoring; the overhauling efficiency is improved, thereby ensuring that the antenna array can rotate to any direction in a three-dimensional direction.

Description

technical field [0001] The invention belongs to the field of electric power monitoring, and relates to an automatic directional substation partial discharge monitoring and positioning device and method. Background technique [0002] Insulation fault is one of the main faults in the operation of power equipment. Before the insulation fault of power equipment occurs, there will generally be a gradual partial discharge process, which will eventually lead to insulation breakdown. If partial discharge monitoring and diagnosis of operating equipment can be carried out during this process, partial discharge signals can be detected in time, and defects can be dealt with in advance, so that the occurrence of insulation breakdown faults can be effectively avoided. At present, the partial discharge detection and positioning of substation equipment are mainly carried out for specific single equipment such as GIS, transformers, and capacitive equipment. Using this method to implement p...

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Problems solved by technology

[0004] However, the existing partial discharge detection and positioning equipment is basically aimed at a single substation equipment (transformer, capacitive equipment, GIS, etc.) The signal and the electric signal can be positioned together, which makes the existing methods have some defects

The equipment in the substation has the possibility of partial discharge. If you want to monitor the electrical equipment in the whole station in real time and simply rely on one-to-one detection equipment, you need to install a partial discharge detection device on each equipment. A lot of human, material and financial resources

And it is very inconvenient to operate, and it is also not conducive to post-maintenance work such as overhaul

Especially in substations of 220kV and above, due to the large number of electrical primary and secondary equipment, if this method is used for partial discharge detection, unnecessary costs will be greatly increased

This form of detection will also be very difficult to adapt to the development trend of "unmanned smart substation" in the future

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