Commissioning starts at Kupchinskaya Substation in St. Petersburg
Date of publication
11 November 2021
10kV Metal-Clad Switchgear Interface cable installation
Commissioning has started at the 220kV Kupchinskaya Substation being built by Stroytransgaz in St. Petersburg.
The 220kV Kupchinskaya Substation is the first 220kV substation to be added to Rosseti Lenenergo’s grids. The transformer substation is designed to connect loads of new users to 10kV power grids and to take some of the load off the existing power centres in the Frunzensky Administrative District of St. Petersburg, as well as to increase power supply reliability. Its construction is also necessary for the city metro operations.
The facility is being constructed in a confined urban environment, therefore this is a closed-type substation, that is, all equipment necessary for its operation is located in a protected building. All current-carrying parts of 220kV metal-clad switchgear are located in airtight cubicles pressurized with special electrotechnical gas (sulphur hexafluoride SF6). This gas has high insulating and arc-extinguishing properties, is non-toxic, fire-safe and its insulating performance does not degrade during extended operation of the equipment. The switchgear is connected to the power supply via two 220kV cable lines made of cross-linked polyethylene manufactured by Prysmian, a leader in the production of power and telecommunication cables and systems.
Installation of power line poles An open transition point for the installation of 220kV terminations
(devices designed to connect a cable line to an overhead line)
Most works under the project were performed using Stroytransgaz's own power construction resources. Works performed include the replacement of the wire and ground wearer (grounded extended lightning rod) 955 meters long, the installation of an open transition point (a structure for receiving overhead power line wires) as well as the installation of cable supporting structures. A protective relay and automation cable has been installed at the substation site. The total installed cable length is more than 10,000m. The lattice pole of power lines has been replaced with a multisided one.
Removing the 220kV cable sheath Installation of 220kV terminations at the pole’s
to install a termination open transition point
The new 220kV Kupchinskaya Substation under construction, according to the FGC UES grid connection specification, is split-connected to the existing 220kV overhead cable line "Yuzhnaya-Chesmenskaya II Chain" via cable inserts. For this, Prysmian’s 220kV cable terminations have been installed on the new pole. To ensure safety during the installation of the terminations, the 220kV CL "Yuzhnaya-Chesmenskaya II chain" was disconnected.
220kV Metal-Clad Switchgear
Two automated systems have been installed at the substation - process control and power metering and accounting systems. These hardware and software suites will perform multiple tasks to increase the cost efficiency of power facilities and the entire power system - from centralization and automation of control processes in normal, emergency and post-emergency conditions to improvement of control and regulation processes, optimization of power production and conversion.
Stroytransgaz is taking an active part in the innovative development of the power sector in Russia. The company has been constructing projects with game-changing properties in terms of reliability, efficiency, and manageability. The company’s team has accumulated a vast experience in the field of design, installation, equipment and revamp of power facilities.
Back in 2006, the company started the construction and reconstruction of generation facilities, and in 2010 we set on a course for the construction of power grid facilities. STG uses cutting-edge technologies and scientific developments and brings in world’s leading OEMs. We deliver projects in many regions of Russia, from Leningrad Region through to Yakutia. The company has constructed a number of large facilities in Siberia.