Configuration of Separate Sections of 220 kV Ajameti 1 and Ajameti 2 OHLs as Double-Circuit Transmission Lines

Configuration of Separate Sections of 220 kV Ajameti-1 and Ajameti-2 OHLs as Double-Circuit Transmission Lines

The Rehabilitation Project – Configuration of Separate Sections of 220 kV Ajameti-1 and Ajameti-2 OHLs as Double-Circuit Transmission Lines was implemented within the framework of Ten Year Network Development Plan approved by Order No 39 of 8 April 2015 of the Minister of Energy of Georgia as agreed with the Government of Georgia at the meeting held on 26 March 2015.

Under the technical decision taken, connection between Zestaphoni-500 SS and Kutaisi-220 SS was provided with a new 220 kV Ajameti-3 OHL, for which two independent OHLs were configured as double-circuit transmission lines: 220 kV Ajameti-2 OHL from Zestaphoni-500 SS to No 24 Support, and 220 kV Ajameti-1 OHL from No 32 Support to Kutaisi-220 SS were configured as double-circuit transmission lines. After the OHLs were configured, the new circuit of Ajameti-1 and Ajameti-2 was called Ajameti-3.

The Rehabilitation Project – Configuration of Separate Sections of 220 kV Ajameti-1 and Ajameti-2 OHLs as Double-Circuit Transmission Lines was implemented by the OHL Projects Division of Projects Department at JSC Georgian State Electrosystem.

Project details:

Cable grade used in the project: AC-400/51
Static wire type used in the project: C-70
Length of the project routes: 21,165 km
65 pieces of double-circuit and 3 pieces of single-circuit galvanized steel supports were installed (with new foundations and grounding contour)
New cells were arranged for the new circuit of Ajameti-3 OHL at Zestaphoni-500 and Kutaisi-220 substations
Number of metal supports to be installed: 68 pieces
Type of fiber optic cable used from Zestaphoni-500 SS to No 25 Support: SMF 24G-652D

Works performed within the framework of the project:

272 pieces of project tower foundations were installed
68 pieces of towers were installed
134,2 km АС 400/51 cable and 15 km C-70 static wire were laid with their overhead-line hardware and garlands
220 kV Ajameti-2 OHL was protected from atmospheric overvoltage and telecommunication between substations was provided with a fiber optic cable. The existing fiber optic cable with its clamping elements was used on 220 kV Ajameti-2 OHL (the route length – 7,494 km)

Project period: