Product Details

Home | Product Details

PD monitoring on Gas insulated switchgear(GIS) systems

Partial discharge measurements are used to validate the integrity of the insulation system at the end of the production line or when commissioning gas insulated switchgear and lines (AIS/GIS/GIL).  On-line partial discharge measurements utilizing acoustic as well as UHF sensors help keeping such equipment in service. External ring antennas, window sensors, or embedded sensors allow survey type measurements and monitoring of the partial discharge activity in the UHF range.  Adiradh Energy offering  range of instruments cover the entire needs of partial discharge testing on gas-insulated substation equipment from production testing and commissioning to maintenance and monitoring. The ICMcompact is the most popular device used in test benches of switchgear manufacturers, the ICMsystem, the AIAcompact and the ATTanalyzer are choosen for onsite inspection and maintenance work, and the GISmonitor for permanent online monitoring in substations.

Partial discharge monitoring on GIS systems Portable  

GISmonitor is a portable unit for partial discharge measurements on gas-insulated switchgear (GIS) caused by hopping particles, floating potentials, cracks in insulators or spacers, or other degradation in the insulation system.  GIS monitor offers parallel real time PD acquisition on up to 40 channels. PD measurements can be easily applied on GIS systems without the need of interrupting the operation. Such temporary online monitoring helps to identify internal imperfections of the insulation system, which may lead to breakdown and system failure in the future.

PD monitoring on Gas-insulated switchgear GIS systems

GISmonitor Portable

Due to the dielectric properties of the SF6 gas, partial discharge activity in gas insulated switchgear covers a bandwidth of well beyond 2 GHz. The mechanical properties of the components of gas insulated switchgear further allow transmission of such signals over a distance of a couple of meters. Thus, the partial discharge monitoring of GIS equipment is done preferably in the UHF range.

GIS monitor Enclosure Models

The instrument is available with different housings:

  • ½ 19″ portable, lightweight desktop enclosure
  • 19″ portable, lightweight desktop enclosure
  • Shock resistant and watertight outdoor case
  • Black mini aluminum box

Adiradh Energy offers GISmonitor  PD monitoring on GIS systems portable  in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai; Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities

Brochure for  GISmonitor  PD monitoring on GIS systems up t0 40 channels  Download

On line Partial discharge monitoring on GIS systems 

GISmonitor is a scalable monitoring device for continuous monitoring of gas-insulated switchgear (GIS) using tcontinuous monitoring of gas-insulated switchgear (GIS)rue prarallel, real-time acquisition techniques.Each 8-channel acquisition plug-in board operates fully stand alone,
but can be com-bined with a virtually unlimited number of units, to monitor all PD sensors in one GIS PD monitoring system in parallel. A partial discharge monitoring acquisition rack (PDMAR) carries up to 15 plug-in boards – each with eight channels – providing up to 120 channels.An industrial type PC installed in a partial discharge monitoring control rack (PDMCR) reads all data of the instruments via the high speed fiber optic
LAN  ring,  providing communication redundancy. The GISmonitor indicates with on-board LED’s internal states and alarm conditions. Cabinets are used to accommodate all instruments and the industrial type PC. Each cabinet comes with a standard 19” frame, an uninterruptible power supply, a network switch as well as temperature controlled cooling and heating. Cabinets for indoor applications feature a protection class of IP54, while cabinets for outdoor applications reach a protection class of IP65.

PD monitoring acquisition and control racks

The GISmonitor is designed to suit all currently available UHF sensors for GIS PD monitoring. This includes embedded and external retrofit UHF sensors. A special input protection unit (IPU2) blocks strong transients (VFT). The preprocessing unit FCU2 demodulates UHF signals into a lower frequency band. The user interface software panel of the GISmonitor monitoring system is installed on the local industrial PC and can be installed additionally on any remote computer for data evaluation and diagnosis. Using an administrative setup allows configuring the system and the embedded service program.

GISmonitor Features

  • Parallel UHF PD measurement on all channels
  • Parallel reading of PD peak values, PD scope amplitudes, and PD patterns
  • Separate gating input channel
  • Automatic alarm detection system
  • System redundancy
  • Suitable for embedded and external retrofit UHF sensors
  • Scalable system configuration
  • Automatic noise suppression mode
  • Network-based communication

Complete PD monitoring system for GIS:

Rem.: N is the number of UHF sensors to be monitored

  • N x Input protection unit IPU2
  • N x Frequency converter unit FCU
  • N/64(120) x PD monitoring acquisition rack PDMAR
  • N/8 x GISmonitor plugin acquisition boards
  • 1 x PD monitoring control rack incl. software
  • 1 x Set of coaxial cables
  • 1 x Set of network cables
  • 3 x UHF disturbance antenna DA2
  • 1 x UHF impulse calibrator CAL2B
Adiradh Energy offers GISmonitor  on line PD monitoring on AIS/GIS/GIL systems in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai; Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities

Brochure for  GISmonitor on line  PD monitoring on AIS/GIS/GIL systems up to 120 channels   Download

AIAcompact-acoustic and electric (UHF) partial discharge measurements on gas-insulated switchgear (GIS), transformers

AIA compact can be equipped with circuits for UHF measurements.The instrument is fitted with a battery pack for independent operation up to 3 hours and adapts to a variety of piezo-electric acoustic sensors and is supplied with a versatile sensor fixture. Additionally, the AIAcompact allows partial discharge measurements on external UHF sensors.Acoustic partial discharge measurements can be easily applied on gas-insulated switchgear and other high voltage equipment without the need of interrupting the operation.

Partial discharge detector

AIA Compact-Partial discharge detector

UHF measurements on embedded or external sensors are possible with the use of the FCU2, a logarithmic frequency converter, which covers 100 MHz to 1800 MHz. As with the preamplifiers, the AIAcompact automatically detects the FCU2 and changes into the logarithmic display for the UHF detection. To protect the instrument’s hardware it is advisable to connect an input protection unit like IPU2B to the sensor’s output.

 AIAcompact Options

  • AIAcompact software: All captured patterns and displays can be transferred to a notebook via an USB interface using the optional AIAcompact software. Optionally, the software allows acquisition of color PD patterns.
  • Gating: Software controlled noise reduction for PD measurements in environments with high frequency disturbance.
  • MUX: Built-in 4- or 12-channel multiplexer to split the PD signal and the voltage signal, with individual setup and calibration factor for each channel.

AIAcompact software offering easy-to-use acoustic partial discharge analysis of gas-insulated switchgear (GIS) and other high voltage equipment plus the optional analysis on embedded or external UHF sensors makes the AIAcompact the ideal solution for convenient in-service substation condition assessment.The AIAcompact combines the complimenting acoustical and electrical partial discharge detection for gas-insulated equipment in a lightweight and battery operated instrument. The measurement inputs provide the supply voltage for different preamplifiers  and acoustic sensors. It automatically selects the appropriate operation mode for each test setup. The AIAcompact  comes with a built-in display and can be operated via integrated push-buttons. Measurement data can be stored and transmitted to a laptop or PC for further analysis.

Typical Packages of  AIAcompact

Standard PD test system:

Adiradh Energy offers AIAcompact in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai; Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities

Brochure for AIAcompact acoustic and electric (UHF) PD measurements on GIS Download

ATTanalyzer- Acoustic breakdown detector 

ATTanalyzer is a simple and effective stand-alone tool to aid in commissioning tests of gas-insulated switchgear (GIS) systems and power transformer. The ATTanalyzer reduces delays in commissioning and maintenance by locating flaws in GIS systems and transformers acoustically.

Gas-insulated switchgear systems occasionally contain flaws that go unnoticed during installation or maintenance but that lead to immediate breakdown when high voltage is applied. These flaws can include floating particles, gaseous impurities, faulty insulator discs, sharp metal burrs, or other defects. If a gas-insulated switchgear system contains such a flaw when brought on-line, sparking and breakdown occurs at the flaw, forcing de-energization and repair. Without diagnostic aids, location of the flaw can lead to costly delays and unnecessary opening of unflawed gas chambers bearing the risk of causing new imperfections, while searching for the chamber containing the flaw.Using the ATTanalyzer, the flaw can be located by mounting acoustic sensors to the outside of the GIS or transformer tank in several locations. When high voltage is applied to the GIS, if a breakdown occurs, the acoustic sensors pick up the disturbance and transmit a corresponding optical signal to the ATTanalyzer acquisition unit. The ATTanalyzer then compares the relative travel times of the sound signals to determine which sensor is the closest to the flaw.

ATTanalyser

ATTanalyser-c

ATTanalyzer consists of a compact central acquisition unit, acoustic sensors, and sturdy fiber optic cable to connect the sensors to the acquisition unit. The stand-alone ATTanalyzer acquisition unit, mounted in a half-19-inch rack, receives and internally processes signals picked up by the sensors. The acoustic sensors for external mounting on the GIS system can be easily attached and removed for reuse. Up to sixteen sensors can be connected to the ATTanalyzer.Fiber optic cables, up to 200 meters in length, provide galvanically isolated connection of the sensors to the ATTanalyzer acquisition unit.

Breakdown detection system:

  • 1 x ATTanalyzer (4-16 channels max., tbs)
  • 1 x ATTanalyzer software
  • 4-16 x Acoustic breakdown sensor ATX1
  • 4-16 x Sensor fixture for ATX1
  • 4-16 x Fiber optic cable of different lengths
  • 1 x Set of cables

Adiradh Energy offers ATTanalyser in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai; Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities

Brochure for Acoustic breakdown analyser ATTanalyser  Download

Sensors, Protection and Preprocessing Units

GISmonitor is designed to suit all currently available UHF sensors for GIS PD monitoring. This includes embedded and external retrofit UHF sensors such as window sensors type WS and external flange sensor.A special input protection unit (IPU2) blocks strong transients (VFT). The preprocessing unit FCU2 demodulates UHF signals into a lower frequency band for easy submission over longer distances.

Brochure for Sensors, Protection and Preprocessing Unit accessories Download