This summer, Rosseti completed the main stage of the comprehensive reconstruction of the 330 kV Derbent substation and plans to finish the construction of the 330 kV Murmansk substation in the near future.
The reconstruction of one of the largest power supply centers in Dagestan is long overdue. An additional catalyst was the construction of the 330 kV overhead line Artem — Derbent, envisioned in the master plan to modernize and expand the backbone infrastructure, approved by Russian Government Decree No. 2101–r of 30.09.2018.
The new line will not only increase the reliability of power supply to the residents in the south of Dagestan, Russian Railways facilities, and a number of oil pumping stations, but will also improve the capacity of international energy transit facilities to the Republic of Azerbaijan.
For the substation, EKRA manufactured 104 units of secondary equipment, such as relay protection and remedeal action scheme equipment, and control and automation systems. All required cable-laying, installation with supervision, and adjustment of devices were carried out by EKRA-Yug, the official representative of EKRA in the Southern, North Caucasian, and Crimean Federal Districts.
At the same time, in another part of our country (almost 4,000 km to the north), the construction of the infrastructure distribution network for the Murmansk transport hub is nearing completion. The project for the integrated development of the hub includes the construction of coal and oil terminals on the west coast of Kola Bay, the creation of transport infrastructure, as well as the reconstruction of a coal terminal and the construction of a container terminal on the east coast of Kola Bay.
The flow of oil, gas, coal, and other cargo in 2021 is expected to be 28 mln tons, so Rosseti North-West built two new power transmission lines and reconstructed two 150 kV substations to ensure uninterrupted power supply to the high-capacity transportation hub. As a result, the reliability of power supply to 300,000 residents of Murmansk was also improved.
The jewel in the crown of the transportation hub is the 330 kV Murmansk substation, which is the region's second largest power supply center and will create opportunities for technological connection of such major industrial consumers as Lavna Commercial Seaport Coal Terminal and the traction substation of the same name. In addition, it will supply power to the center for construction of large capacity offshore facilities of Kola Shipyard.
For the substation, EKRA manufactured 138 units of relay protection, remedeal action scheme, and control and automation equipment; installation and adjustment works were carried out by specialists of EKRA Research and Production Enterprise and KomplektEnergo engineering company.
By the way, Murmansk substation received a “jubilee” local stability control system (LSCS) cabinet of ShEE 223 0907 type with serial number 1000. The LSCS complex developed by EKRA ensures load stability and synchronous operation of the energy area in the UES of Russia in case of emergency disturbances, provides a standard static stability margin in post-emergency modes, monitors the control area mode, registers emergency disturbances, selects and implements necessary control actions.
EKRA continues to equip the major power facilities of Russia on schedule, despite seasons and other external impacts.