Power cable local synchronous acquisition method and system based on GPS

Abstract

The invention discloses a power cable local synchronous acquisition method based on a GPS. The method comprises following steps that a master-slave collector firstly initializes parameters of a serial port connected with a GPS module, receives character string data from the GPS module, checks the data and checks collector system time when the data is qualified; the master-slave collector firstly checks the time, then informs a slave collector to acquire time, and triggers a master collector to acquire data; the master collector also requests the slave collector to acquire data; the slave collector receives acquisition time and the acquisition requests from the master collector, and triggers a slave collection module to acquire data; and data acquired by the master collector and the slave collector is matched and positioned. According to the invention, by use of the GPS clock, quite high synchronization degree of time on two ends of a cable and quite accurate positioning precision are achieved; a discharging power source of the cable can be quickly found; and power supply quality is improved. The invention also discloses a power cable local synchronous acquisition system based on a GPS.

Description

technical field [0001] The invention relates to the field of power cable partial discharge collection, in particular to a GPS-based power cable partial discharge synchronous collection method, and also to a GPS-based power cable partial discharge synchronous collection system. Background technique [0002] With the continuous acceleration of the urbanization process, the power cable, as the most important power transmission tool, is attracting more and more attention and attention, and the research on the discharge source of the power cable is also paid more and more attention by researchers. At present, there are many methods for locating partial discharge of power cables, among which the mainstream method is to use traveling wave location, mainly including single-ended and double-ended methods. The former is based on the transient traveling wave generated when partial discharge occurs along the cable direction. Propagate at both ends, refraction and reflection occur when e...

AI Technical Summary

Problems solved by technology

Due to the long propagation path of the single-ended reflected wave, coupled with the influence of the transition impedance when passing through the discharge point, the pulse signal attenuation will be more serious, so the positioning error in practical applications is relatively large

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