Telecommunications

Pursuant to the Law on Electronic Telecommunications (Official Gazette of Montenegro, no. 40/13, 56/13, 02/17), Crnogorski elektroprenosni sistem AD (CGES) is registered in the Register of Operators of the Agency for Electronic Communications and Postal Services (Decision no. 0205-3719/2 of 01 October 2010) for providing the service of optical fibre lease.

The telecommunications system of Crnogorski elektroprenosni sistem AD is based on IP/MPLS technology. CGES has its own passive optical network and, in combination with new IP/MPLS active equipment, it has a modern and reliable telecommunications system that connects all facilities of interest to CGES. The new telecommunications system of CGES replaces the existing SDH/PDH system and enables an additional level of reliability and availability during the transmission of services necessary for the normal operation of the electricity transmission system, such as: SCADA systems, metering systems, operational telephony, protection systems, video surveillance, business network, exchange of information with EPCG and CEDIS, international connections with neighbouring transmission system operators and many others. To this end, redundancies have been implemented in the multi-level system. Several redundant telecommunication connections lead to each location, both by optical cables and by radio relay links. Redundancies have also been implemented at the level of power supply sources, modular power supply, processor and traffic cards up to the level of communication interfaces.

The total length of the optical cable is 1004 km.

Table 1 contains a list of all sections that make up the optical network of CGES:

No.	SECTIONS	Section type	Optical length (m)
1	SS Podgorica 2 – SS Lastva	400kV OPGW	70915
2	SS Lastva – Trebinje (to the border with Bosnia and Herzegovina)	400kV OPGW	71400
3	SS Podgorica 2 – SS Ribarevine	400kV OPGW	91600
4	SS Pljevlja 2 – SS Ribarevine	400kV OPGW	59600
5	SS Pljevlja 2 – SS Bistrica (border with Serbia)	110kV OPGW	14000
6	SS Pljevlja 1 – SS Pljevlja 2	110kV OPGW	3220
7	SS Piva – SS Pljevlja 2	220kV OPGW	53700
8	SS Podgorica 1 – HPP Perućica	220kV OPGW	36730
9	SS Podgorica 1 – HPP Perućica	POK	3390
10	SS Podgorica 2 – SS Cetinje	110kV OPGW	33600
11	SS Cetinje – SS Budva	110kV OPGW	12390
12	SS Budva – SS Lastva	110kV OPGW	7000
13	SS Lastva – SS Tivat	110kV OPGW	14000
14	SS Tivat – SS Herceg Novi	110kV OPGW	21860
15	SS Podgorica 2 – SS Virpazar	110kV OPGW	31580
16	NDC – Head Office	POK	1000
17	SS Podgorica 1 – SS Podgorica 2	110kV OPGW	6360
18	TS Podgorica 2 – TS Podgorica 4	110kV OPGW	3970
19	NDC – SS Podgorica 4	POK	2000
20	SS Podgorica 2 – SS Podgorica 5	110kV OPGW	12150
21	SS Podgorica 2 – Tirana (border with Albania)	400kV OPGW	29000
22	HPP Perućica – SS Nikšić	110kV OPGW	13640
23	SS Andrijevica – SS Berane	110kV OPGW	19200
24	SS Berane – SS Ribarevine	110kV OPGW	22500
25	SS Ribarevine – SS Mojkovac	110kV OPGW	15290
26	SS Virpazar – SS Bar	110kV OPGW	17140
27	SS Podgorica 1 – SS Danilovgrad	110kV OPGW	18600
28	SS Bar – WPP Možura	110kV OPGW	19890
29	WPP Možura – SS Ulcinj	110kV OPGW	5870
30	SS Podgorica 1 – SS Podgorica 3	110kV OPGW	4560
31	TS Ribarevine – Kosovo (to the border)	400kV OPGW	58000
32	TS Podgorica 1 – CGES Head Office	POK	3880
33	SS Podgorica 3 – SS Podgorica 5	POK	3880
34	SS Nikšić – SS Kličevo	POK	3870
35	SS Kličevo – SS Brezna	110kV OPGW	33420
36	SS Brezna – WPP Krnovo	110kV OPGW	21540
37	SS Tivat – SS Kotor	110kV OPGW	6600
38	SS Vilusi – Ilino Brdo	POK	4121
39	SS Podgorica 1 – SS Podgorica 4	110kV OPGW/POK	5822
40	SS Podgorica 1 – SS Mrke	110kV OPGW	9000
41	SS Lastva – SS Brezna	400kV OPGW	96000
42	SS Brezna – SS Žabljak	110kV OPGW	42000

Table 1 – List of sections of CGES optical network

The optical network is consistent with the development of transmission networks in neighbouring electric power companies. The capacity of the OPGW cable in the network is 48 optical fibres. The applied OPGW cables have two types of fibres, 24 fibres are ITU-T G.652D SMF type, and the other 24 fibres are ITU-T G.655C NZDSF type. In the directions Andrijevica – Berane and Pljevlja 1 – Pljevlja 2, a cable with 24 optical fibres was used, but with a mixed structure that includes both types of used fibres. On the section Lastva – Brezna, a cable with 12 optical fibres ITU-T G.652D SMF type was used, and on the section Brezna – Žabljak, a cable with 12 optical fibres ITU-T G.655C NZDSF type was used. Through the use of optics, CGES is connected to the electric power companies of Serbia, Kosovo, Bosnia and Herzegovina and Albania.

The physical structure of the CGES optical network is shown in Figure 1:

Figure 1 – CGES optical network

Pursuant to the Law on Electronic Telecommunications (Official Gazette of Montenegro, no. 40/13, 56/13, 02/17), Crnogorski elektroprenosni sistem AD (CGES) is registered in the Register of Operators of the Agency for Electronic Communications and Postal Services (Decision no. 0205-5479/2 of 30 July 2019) for providing the service of electronic communication infrastructure lease..

CGES offers the relevant service to interested operators in cases where there are technical conditions and available free capacity for joint use of the electronic communication infrastructure and if joint use does not cause interference with the operation and use of this infrastructure. The service of electronic communication infrastructure lease includes the provision of alternating power supply 220 AC. CGES can provide power supply from the home transformer, as for other consumers in the substation. Equipment for uninterruptible power supply is provided by the lessee.

The colocation service is possible at the following locations:

Rd. broj	SUBSTATION
1	Podgorica 1 (Zagorič)
2	Podgorica 2 (Mareza)
3	NDC
4	Head Office
5	Danilovgrad
6	Nikšić 1
7	Nikšić 2 (Kličevo)
8	Brezna
9	Žabljak
10	Pljevlja 1 (Židovići)
11	Pljevlja 2 (Kalušići)
12	Berane
13	Mojkovac
14	Ribarevine
15	Andrijevica
16	Mrke
17	Mateševo
18	Virpazar
19	Bar
20	Ulcinj
21	Cetinje
22	Budva
23	Lastva
24	Kotor
25	Tivat
26	Herceg Novi