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GIS partial discharge online monitoring

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Overview
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Fully enclosed gas insulated composite electrical equipment, abbreviated as GIS, uses SF6 gas with excellent insulation performance as the arc extinguishing and insulation medium. Due to its fully enclosed combination and small GIS volume, a fault in one equipment is prone to affect nearby equipment, causing the fault to expand. The repair of GIS faults is relatively complex, so online monitoring of GIS is particularly important.

Overview
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System structure
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The system mainly consists of built-in and external sensors, amplifiers, data collectors, optoelectronic converters (OCUs), industrial control computers (station center processing units, PCs and equipment cabinets) for ultra-high frequency partial discharge, as well as partial discharge data management systems, pattern recognition and diagnostic software. In addition, it also includes a precise positioning system for partial discharge and a sensor calibrator.

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System structure
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Safety Service

System Introduction

01. Monitoring IED Host 02.UHF sensor

Safety Service The GIS partial discharge monitoring (IED) host is divided into two types: online monitoring and portable, as shown in Figure 1. The online monitoring type IED host is a standard 2U (3U) 19 inch chassis, which can be installed nearby in the control cabinet. The portable monitoring IED host is installed in a portable industrial suitcase, and the chassis has good waterproof and anti drop performance. The number of detection channels for each IED can be customized within the range of 4-12 channels (including one environmental noise channel).

Safety Service

Monitoring the IED host

The GIS partial discharge monitoring (IED) host is divided into two types: online monitoring and portable, as shown in Figure 1. The online monitoring type IED host is a standard 2U (3U) 19 inch chassis, which can be installed nearby in the control cabinet. The portable monitoring IED host is installed in a portable industrial suitcase, and the chassis has good waterproof and anti drop performance. The number of detection channels for each IED can be customized within the range of 4-12 channels (including one environmental noise channel).

Safety Service UHF ultra-high frequency sensors are divided into two types: built-in and external. They obtain ultra-high frequency signals inside GIS switches or bus positions, upload them to partial discharge monitoring IEDs, and analyze them using expert analysis software on the upper computer to provide comprehensive judgment results of partial discharge data.

Safety Service

UHF sensor

UHF ultra-high frequency sensors are divided into two types: built-in and external. They obtain ultra-high frequency signals inside GIS switches or bus positions, upload them to partial discharge monitoring IEDs, and analyze them using expert analysis software on the upper computer to provide comprehensive judgment results of partial discharge data.

System Introduction

Safety Service

Monitoring the IED host

Safety Service

UHF sensor