Sergey Sobyanin, Moscow Mayor Has Opened Largest Energy Facility of JSC “MOESK”

On 26 December, Sergey Sobyanin, Moscow Mayor opened one of Moscow’s largest feeding centers - 220/110/10 kV substation “Sigma” of 626 megavoltamper (MBA) in capacity after reconstruction.

Reconstruction of the substation, which is located in the Zelenograd Administrative District of the capital, was held as part of implementation of the investment program of JSC “MOESK”. Modernization was held in the territory of the existing feeding center of 110/10 kV and consisted in its transfer to the voltage of 220 kV. At the same time, capacity of the substation was enhanced 4 times. The investments into the project amounted to RUR 2.889 billion.

Startup of the reconstructed substation is intended to increase reliability of electricity supply in Zelenograd, create an opportunity for additional connection of new consumers, including those in the special economic zone “Zelenograd”, where the area of about 150 hectares will room enterprises of micro-and optoelectronics, IT-, nano-, bio-information and biosensor technologies. The new substation will allow SEZ residents to have capacity of 160 megawatts.

Introducing the possibilities of the renovated substation, Pyotr Sinyutin, Acting Director General of JSC “MOESK” highlighted technical innovations implemented at the substation, which is related to new generation feeding centers. The most advanced equipment that best meets the requirements of reliability, efficiency and safety was used to equip it.

“We have launched one of the most powerful electric substations in Moscow. It will further develop industry, create new jobs in Zelenograd and, of course, increase electrical supply reliability,” Sergey Sobyanin said.

Information on the substation “Sigma”:

The feeding center has SF-6 insulated switchgear of 220 kV and SF-6 insulated switchgear of 110 kV (complete gas-insulated switchgear) made by Siemens, two autotransformers of 250 MVA each, which have voltage of 220/110/10 kV with lower no-load losses (by 28 kW less than old-pattern transformers), four control transformers of 63 MVA each, new complete switchgear of 10 kV, made of 8 sections, designed for connection of 72 cells.

Innovative solutions that have been used at the substation include a technological video surveillance system which allows you to control the system and to monitor the working teams; an auxiliaries board with new design of draw-out elements with automatic breakers, and DC panels with a microprocessor system of monitoring control current with the information display on the control panel.

The feeding center is managed by the automatic process control system (APCS). Automatic equipment and control by devices of all voltages are implemented in microprocessor modules, allowing you to monitor the processes occurring in a grid, through built-in oscilloscopes, to increase awareness of the operational staff, reduce the time of periodic inspections significantly.

In addition, modern communication tools allow for remote control of the substation equipment from the control panel of the branch of JSC “MOESK” – “Central Electric Grids”.