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Interconnection Libya-Tunisia

countryLibya/Tunisia
customerSiemens AG, Germany
end customerGECOL (General Electric Company of Libya)

Interconnection Libya-Tunisia

Coupling of the ALSTOM S900 RTUs to the control center is implemented via four protocol converters. The ABB protocol ADLP-80 is used for the uplink communication from the converter to the control station. Communication with the RTUs is based on IEC 60870-5-101 in balanced mode.
Redundant lines are used to connect the communication terminal devices to the protocol converter. The protocol converters and telecontrol transformer TCT are installed at stations #1 - #4.

Background

The Roweis and Abu Kammash stations in Libya are to supply electricity to the Medenine and Tatouine stations, securing the growing energy demand in neighboring Tunisia. This is achieved with the help of ALSTOM RTUs installed at these stations and linked to the national  Libyan control system via IPCOMM protocol converters. From here energy distribution will be monitored.

GECOL (General Electric Company of Libya) is the government run electricity provider and operator in Libya.
Power generation is primarily based on combined power stations (oil and gas). In 1999 Libya generated a total of 19.5 billion KW, 90% of which were consumed.

Technical data:
  Station System

Libya

Roweis 220 kV Gas-insulated switching system (GIS), Siemens
Abu Kammash 220 kV ABB system

Tunisia

Medenine 220 kV GIS - Siemens system
Tatouine 220 kV Alstom system

Used Products

ipConvipConvUniversal protocol converter for highest degree of flexibility
Details...
product/ipConv/en/ipConv_en.pdf

Used Protocol Stacks

ADLP-80, Slave IEC 60870-5-101, Master

Hardware

IPC194 19IPC194 19" 4U(no longer available)
The robust and flexible industrial PC. This PC industrial PC can be extended about a passive backplane with a high number of ISA and PCI cards.
Details...
hardware/IPC194/en/IPC194_manual_7_EN.pdf
TCTTCTTelecontrol converter for pulse-code and pulse-length modulated protocols
Details...
hardware/FWU/en/fwu_datasheet_3_2_3_EN.pdf
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