CYG SUNRI CO., LTD.

TH3015 GIS partial discharge online monitoring system

Overview/Introduction/Application Technical Features/Advantages Technical Specifications/Sub-models Related Solutions

TH3015 GIS partial discharge online monitoring system

Product Description

The TH3015 GIS partial discharge online monitoring system adopts ultra-high frequency detection technology, which is applicable to online monitoring, analysis, diagnosis and remote alarm of GIS partial discharge. It provides scientific decision-making basis for GIS condition maintenance, so as to realize digital GIS maintenance. Based on real-time monitoring of partial discharge during the operation of GIS, early warnings of the abnormal state of GIS insulation and discharge faults can be provided in time. The system has the function of continuous real-time automatic monitoring and recording of the basic characteristic parameters of partial discharge, such as partial discharge amplitude (maximum discharge amount, average discharge amount), phase and frequency.

Scope of Application

It is applicable to GIS partial discharge monitoring at all voltage levels in substation.

Technical Features/Advantages

High stability

High-quality sensors are used, the acquisition unit adopts advanced detection technology, and specific filters are used in internal configuration. Combining software processing technology, the system has strong anti-interference performance, and the stability of the instrument is effectively improved.

Complete data analysis function

The device has complete records, analyzes partial discharge that occurs during the operation of GIS, has a partial discharge pattern library and identification algorithm, and provides identification of background noise, typical interference and partial discharge type. It can determine the occurrence and development rules of partial discharge, and provide a basis for maintenance.

Local and remote alarms

The device is equipped with local sound and light alarm function and remote software interface alarm function. This device supports IEC61850 communication with long and reliable communication distance. The internal/external sensors in the device have the same service life as the main device, while the field IED and other components have a service life of 8-10 years.

Accurate judgment

The device samples continuously in real time. When the detected partial discharge signal meets the set "threshold", "density" and "reliability" at the same time, it is considered as abnormal, which improves the accuracy of judgment.

High sensitivity

The equivalent height of UHF sensor is >12mm, and the sensitivity of the acquisition unit is better than 7V/m.

Specifications/Submodels

Device monitoring parameters
Monitoring frequency band	300MHz-1500MHz
Number of detection channels	12
Channel sensitivity	Higher than 7V/m
Dynamic Range	>40dB
Input resistance	50Ω
Communication interface	Optical Ethernet
Synchronous processing	AC power synchronization, external PT signal synchronization
UHF (ultrahigh frequency) sensor parameters
Monitoring frequency band	300MHz-1500MHz
Equivalent height	≥12mm
Resistance	50Ω
Interface	N-type
Installation method	Installation with special stainless steel cable tie