Docstoc

the T-NET DATA SHEET

Document Sample
the T-NET DATA SHEET Powered By Docstoc
					      fmc-tech ltd.                                  Unit 3B2, Western Business Park, Shannon, Co. Clare, IRELAND
                                                     T: +353 61 475765, W: www.fmc-tech.com, E: info@fmc-tech.com




 T-NET Outline Data Sheet
 Overview
 The T-NET System has been developed by FMC-Tech ltd, and is installed and validated on 110kv and
 132kv circuits, with sites in Northern Ireland, North Wales and Poland. The system combines real-time
 data from the conductor, local weather data, and uses standard equations to deliver dynamic line
 rating.

 General Description
 The T-NET consists of line mounted sensors with built in radio communications. These sensors
 measure the line current, both amplitude and phase, and the surface temperature of the conductor.
 The sensors forward the conductor data to a locally mounted controller, and the data is then
 forwarded by GPRS to a server. In the standard version of the T-NET, the user interface is a web
 based controller. The line sensors are powered by the magnetic field of the line, and the local
 controller is powered by a Solar Panel. The controller can supports additional inputs as required, and
 has as standard a weather station serial link.

Line Mounted Sensor


Radio Link




Local Controller




Weather Station




   Company Reg. No: 347203, Registered office: Unit 3B2, Western Bussiness Park, Shannon, Co. Clare, IRELAND
     fmc-tech ltd.                                  Unit 3B2, Western Business Park, Shannon, Co. Clare, IRELAND
                                                    T: +353 61 475765, W: www.fmc-tech.com, E: info@fmc-tech.com


How the T-NET Works
The Line Mounted Sensors measure the surface temperature and load in Amps of the conductor, and
relay this by radio to the local controller. A weather station is also fitted to the staructure, and is
connected to the same local controller, providing wind speed/direction, solar gain, and ambient
temperature. The combination of conductor and weather information creates a data node ,and these
nodes are mounted at intervals of 4 to5km intervals (dependant on topography). The nodes relay
their data back to a server via GPRS, at user configurable intervals (every 1 to 5 minutes). A web-
controller running on the server then calculates the capacity of the conductor based on the prevailing
conditions, using standard equations such as Morgan or Cigre. Futher inputs to enhance these
equations are achieved by adding local topography factors. This local topography information creates
‘virtual weather stations’ along the line, and therefore the critical span is constantly and dynamically
determined.

Advantages
The T-NET system is simple to install. The Sensors are non invasive, and are designed for live line
installation (where work practice permits). It takes approximately 5 minutes to install a sensor
including it’s temperature probe, and once installed it will continue to operate off it’s own power CT.
There is also a battery back up that gives 72hrs of operation in the absence of line load above 10
Amps. All the parameters of the system are programmable from the web application, (threshold
values, reporting intervals, Sensor Software etc). Line conditions are continuously monitored at a
sampling rate of 2kHZ, and data from all nodes fitted in the network is time synchronized to a typical
accuracy of 10uS (provided by GPS).

The Web based User Interface




  Company Reg. No: 347203, Registered office: Unit 3B2, Western Bussiness Park, Shannon, Co. Clare, IRELAND
     fmc-tech ltd.                                   Unit 3B2, Western Business Park, Shannon, Co. Clare, IRELAND
                                                     T: +353 61 475765, W: www.fmc-tech.com, E: info@fmc-tech.com


Outline Specification


 Sensor                                Performance
 Current range                         0A-600A
 Conductor Temperature Range           0°C to +80°C
 Powering method                       Line powered
 Min powering line current             Typical 10A
 Line Voltage Range                    0 to 220kV
 Sampling Rate                         2 kHz at full sampling rate.
 Communications                        ISM Band (2.4GHZ)
 Flash Memory                          40 minutes of data
 Battery Back Up                       80 Hours (Rechargeable from Line)



 Local Controller                                                      Standard
 GPS Location and Timing                                               
                                                                       
 GPRS communications modem (Quad band)

                                                                       
 ISM Band Radio

                                                                       
 Mounting Brackets

                                                                       
 Voltage Input option

                                                                       
 Battery Back-up (150 Hours)

 Solar Powering                                                        



 System                                Description
 Interface to Enterprise Systems       Database access via stored procedures – SOAP/XML
 Typical GPRS usage per controller.    1MB per month (typical load profile, line temperature, and weather data)



 System                                Description
 Wind Speed                            1.5 to 79 m/s

 Wind Direction                        16 points on compass rose, 1° in numeric display

 Ambient Temperature                   -40° to + 65°C

 Solar Radiation                       0 to 1800 W/m²

 Humidity                              0 to 100% RH




 Company Reg. No: 347203, Registered office: Unit 3B2, Western Bussiness Park, Shannon, Co. Clare, IRELAND

				
DOCUMENT INFO
Shared By:
Categories:
Tags: data, sheet
Stats:
views:2
posted:7/26/2011
language:English
pages:3
Description: the T-NET DATA SHEET
Fahad  Khan Fahad Khan Bussiness http://www.it4alls.com
About My name Is Fahad khan