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Wednesday, 12 August 2015 10:34 Written by

RT Mon

SCOPE introduces, for the first time in the country, the most powerful Real Time On-Line system for continuous monitoring of Circuit Breaker performance in HV / EHV substations.

RTMon consists of Field Unit which is inatalled near CB in IP enclosure, a PC in control room loaded with RTMon software and the communication link between the two.

No. of CBs in one subatation can be monitored by installing one field unit per CB, and they will communicate with central PC.

Features

  • The RTMon system is set up to monitor the signatures/ values of following parameters directly using sensors:
    • Close/ Trip Coil Current, Line/ Fault Current
    • Station DC Voltage
    • Close / Trip Auxiliary Contact Timings (field configurable wet/ dry)
    • Spring charging motor Current & Time
  • RTMon continously monitors static parameters like SF6 gas pressure or density , pneumatic or hydraulic pressure, temperature etc.
  • The RTMon system calculates following parameters:
    • Projected Main Contact Timings.
    • Arcing Time and Fault Clearing Time.
    • Cumulative Fault Current.
  • Provision for mechanism travel available. Can be used if suitable travel transducer with fixture is available.

Features of RTMon Software

  • Viewing, analysis and comparison of test data with previous signatures or pre-set limits.
  • Dynamic calculations on graphical information for easy on-screen analysis
  • I ndication of any abnormality in real time helps planning of diagnostic testing
  • I n a substation having many RTMons, the software stores the signature data in a structured database to relate data to each CB / pole.

Specifications

  • Trigger: Automatic, on coil current or auxiliary contact change over when the circuit breaker operates.
  • Sampling Rate: 10 kHz
  • Auxiliary Contact: 6 Wet OR Dry contacts, field configurable, 15V to 300V DC input of wet contact.
  • Coil Current: Records 'Trip 1' & 'Close' on 3 channels & 'Trip 2' on 3 channels. Total channels 6. Upto 25A.
  • Line/Fault Current: Records Trip/Close Line/Fault currents on 3 channels for 3 phases.
  • Motor Current: Records Motor current upto 25A and spring charging time upto 60 Sec on 3 Channels.
  • Station DC Voltage: Records variation in Station DC voltage during operation on 2 channels upto 250V DC.
  • Spare Channels: 3 Analog input channels (0-5V input) each for SF6 gas and air or hydraulic pressure.
  • Memory: Inbuilt, non volatile, 256 MB flash.
  • Communication: RF, wired or fiber optic communication with remote PC.
Wednesday, 12 August 2015 10:42 Written by

SA Mon

SAMon from SCOPE is a powerful Online Leakage Current Monitoring system for continuous monitoring of metal oxide (Zno) Surge Arrester leakage current in live EHV / UHV substations.

It consists of portable Field Unit which is intalled near SA in IP enclosure, a PC at control room on which SAMon software is intalled and a Communication link between the two.

SAmon monitors Third Harmonic Resistive Leakage Current (THRC) which reflects the healthiness of SA, as per IEC 60099-5 B2.


Field Unit contuinously measures THRC at pre-set time interval and sends to central PC located in control room for monitoring all SAs in substation, multiple Field Units are used.

Features

  • State of the art, on-line test system for Residual Life Assessment of Surge Arrester (LA).
  • Measures 3rd harmonic resistive leakage current and total leakage current as per IEC 60099-5 B2.
  • I nbuilt system harmonic compensation.
  • Temperature compensation through inbuilt temperature sensor.
  • Specially designed low-noise permanent mounting type CT and field probe.
  • Authentic, time-stamped test results, data management through built-in real time clock, memory, PC connectivity & analysis software.

Features of SAMon software

  • Create library of SA to be monitored with all relevant ID & rating data.
  • Set time interval between measurements. SAM Supplied with suitable Test Leads & aluminium transport case on unit will capture & transmit data accordingly.
  • Trend analysis of SA performance possible by using Analysis Software.
  • The SAMon analysis software is installed in the central PC. At decided interval PC sends request to the analyzing unit. The analyzing unit samples data from all the surge arresters calculates
    the parameters and send it to PC.

Specifications

  • Total leakage current range – up to 10mA.
  • Resistive leakage current range – up to 10mA.
  • Field probe current range – up to 1mA.
  • Resolution – 1μA.
  • Accuracy – 5%
  • Power – 90 to 230 V AC or DC.
  • Communication: RF, wired or fiber optic communication with remote PC.
Wednesday, 11 January 2017 10:54 Written by

XC-2100E

”XC 2100E, a Fault Location System based on principle of travelling wave detection is the solution to above problem. It can detect not only permanent fault, but also transient fault within one tower span accuracy (with best accuracy of ±50 meters). It is a kind of Line Monitor for continuous monitoring of transmission lines and gets triggered whenever travelling waves are generated on line due to switching, lightening or fault.

There are various methods employed for fault location detection. However the most suitable is Double End Method in which XC 100E are installed on both ends of the line, and are time synchronised by built-in GPS Module.

The data from both Units is brought to a Master Station where the Master Station Software XCF 2100E is installed. It automatically calculates the distance of fault from each end of line. Each XC 100E is capable of monitoring up-to 8 lines and the Master Station Software is capable of handling large no. of lines in a network.

Features

  • TWFL system is free from influence of following factors which aff ect fault location accuracy of impedance based measurement methods like:
    • Resistance of line
    • Voltage & Current Transformer (CT & PT) errors
    • Insufficient accuracy of line parameters due to neglecting of line transposition, distributed capacitance etc.
    • Uncertainty of zero sequence impedance due to variation of earth resistance along the line corridor
    • Load flow
  • TWFL system monitors travelling waves at both ends of transmission lines & provides accurate fault location(fault distance, tower number) for all type of power lines including:
    • AC, HVDC and Series Compensated Transmission Lines
    • Lines with T branches
    • Lines containing cable and overhead line sections
    • Measuring fault distance of single phase to ground fault in non-eff ectively earthed Distribution System
  • Travelling wave measurement technique used gives fault location within one tower span and with best accuracy of ±50 meters irrespective of line length, line parameters, fault resistance, CVT transients, conductor & tower geometry.
  • Such accurate fault location greatly reduces the search time to find out the fault to help quick recovery of the system.

Specifications

Parameter XC-2100E
No. of Channels 3-24 configurable for 1-8 line
Input Module AD Module: Direct current input from substation Protection CT
AI Module with split core CT: Current Input through a split core CT
AI Module with external CT: Current Input through an external CT
AV Module: Input from substation VT
Length of Transient Record 1 to 20ms Programmable
Power 85 to 264V, 50/60 Hz AC or 90 to 260V DC
Sampling Frequency 36 MHz, 12 MHz, 8 MHz, 6 MHz, 4.8 MHz, 4 MHz, 3 MHz, 2.4 MHz, 1.5 MHz, 1 MHz & 500 kHz
Accuracy of Fault Location Best Accuracy to ±50 meter
GPS Accuracy 100ns
Memory 8 GB
Communication port 2 Ethernet ports, 2 DB9 RS232, USB
Communication protocol IEC60870-5-104, IEC 61850
Immunity Conforms to relevant IEC standards
Operating Temperature - 10°C - 55°C
Storage Temperature -40°C to 85°C
Physical Dimension 2U, 19”