Research on Intensive Care Technique for Partial Discharge in High Voltage Cable

On-line partial discharge detection is an important method for operation status evaluation of high voltage cable. Affected by propagation characteristics of partial discharge and external interference signals, it may be difficult for field testing personnel to determine suspected partial discharge. Taking advantage of the irreversibility of solid insulation defects, this paper proposes to utilize intensive care technique to track suspected partial discharge signals detected by live detection, and observe long-term accumulation of discharge spectrum. Combined with an effective case of partial discharge monitoring for high voltage cable, the application effect of intensive care system is introduced. The intensive care technique is an important supplementary means to diagnose partial discharge in high voltage cable, which can ensure safe and stable operation of high voltage cable.