Oscillatory-wave-based simulation system for detecting and positioning partial discharge of cable

Abstract

The invention provides an oscillatory-wave-based simulation system for detecting and positioning partial discharge of a cable. The oscillatory-wave-based simulation system comprises a tested cable, a high-frequency coupler, an oscillatory wave circuit, a control module and a display module, wherein a defect point is arranged on the tested cable; the control module outputs a control signal to control the oscillatory wave circuit to produce oscillatory wave voltage; the oscillatory wave circuit outputs the oscillatory wave voltage to the tested cable connected in series with the oscillatory wave circuit, and the oscillatory wave voltage excites a partial discharge signal at the defect point; the high-frequency coupler is connected with a first endpoint of the tested cable and used for receiving the partial discharge signal; the control module positions the defect point according to the received partial discharge signal; and the display module displays the positioning result. The oscillatory-wave-based simulation system is low in simulation cost and high in efficiency, can be used for experiments and trainings in a power system simulation platform, and is suitable for popularization.

Description

technical field [0001] The invention relates to power system simulation technology, in particular to a cable partial discharge detection and positioning simulation system based on an oscillatory wave method. Background technique [0002] At present, the cable partial discharge detection and location based on the oscillatory wave method is the most widely used detection technology for cable fault location. Oscillating wave voltage method has received more and more attention in the field of cable partial discharge detection due to its outstanding advantages in non-destructive and convenient on-site operation. However, the simulation technology for on-site inspection of cables by the oscillatory wave voltage method is still very scarce. In order to facilitate popularization and utilization of cable partial discharge detection and location technology by oscillatory wave method, it is necessary to establish a simulation system for cable partial discharge detection and location t...

AI Technical Summary

Problems solved by technology

[0003] At present, in the simulation system of the power system, there are insurmountable problems in the simulation of cable partial discharge detection and location using the traditional practical mode.

For example, the detection equipment is expensive and cannot be equipped in large quantities, and cables are required for power outages, and the cables are expensive, resulting in extremely high simulation costs and low efficiency

It is difficult to be widely used, which hinders the popularization and application of this detection and positioning technology

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