Both impellers for pump-turbine hydroelectric Zagorskaya PSP-2 arrived at the construction site of the station. This is the second batch of equipment for hydroelectric number 3 and number 4 PSPs future. Impellers for the first two hydraulic units were shipped and delivered to Zagorskaya PSP-2 in June 2010.
Impellers diameter of 6.3 m and a weight of 102 tons each were made in St. Petersburg power engineering company "Power Machines". Transportation of such equipment from St. Petersburg to the construction site Zagorskaya PSP-2 in Sergiev Posad district of Moscow region was carried out by special trucks on federal highway Moscow — St. Petersburg. Transport operation for the delivery of large-sized heavy equipment continued for three days.
Impellers pumped storage power plant units (PSP) as opposed to hydro power equipment can be rotated in both directions. Due to this unique feature PSP accumulates (stores) electricity, returning it to the grid when needed. In times when there was a decline in the power consumption (mostly — at night), hydroelectric pumped storage work as pumps and consuming cheap electricity, the water is pumped from the lower to the upper basin accumulating pool at the height of several tens or hundreds of meters. In periods of high electricity demand (mainly in the morning and evening) PSP as a generator, converting the energy of falling water — into electricity.
To unload the runners at the construction site used a powerful crane of 250 tons. To secure and protect the equipment arrived from the weather made a special 7 meter shed.
— We got a second — the last batch of runners. Thus, the station site in reality all four are impellers necessary for hydroelectric installation. This is one of the most important events in the life of the construction site, which we are all very pleased — said General Director of JSC "Zagorskaya — 2" Vladimir Magruk. — With the commissioning of the second phase of Zagorskaya will be the largest power plant in the Moscow region.
The contract for the supply of pump-turbines for Zagorskaya PSP-2 was signed between OJSC "Power Machines" and JSC "Zagorskaya-2" in October 2007. In accordance with the contractual obligations of power engineering company provided the design, manufacture, model testing and delivery of four pump-turbines of 214 MW each for the four hydroelectric stations. Currently, in accordance with the terms of the agreement, the experts of "Power machines" carry out the work of installation of the supplied hydraulic equipment.
Construction Zagorskaya PSP-2 is near the existing Zagorskaya PSP — branch of JSC "RusHydro". According to the System Operator deficit maneuver the regulatory power in the central Russian region of 2.5-3.0 million kW, including in the Moscow region — about 1.5 million kW. The second phase of the Zagorskaya hydroelectric station is built for a partial solution to this problem as well — preventing accidents in Moscow and the Moscow region. After the completion of construction and reaching full production capacity highly maneuverable power Zagorskaya PSP-2 will help to smooth peaks and dips filled night of daily schedules of energy consumption in the ECO Center, which will increase reliability and improve the quality of power supply in the region.
The first two hydroelectric pumped storage Zagorskaya-2 420 MW to be commissioned in December 2012. At full capacity (840 MW power plant in operation, 1000 MW — in pump mode), the station will be released in 2014. The structure of the station facilities include upper and lower basins, drainage, water supply lines and the station node, the schema objects of power and infrastructure projects, which provide building. Erection Zagorskaya PSP-2 is an area of over 700 hectares. At the construction site involved over 500 pieces of equipment and 1,500 people. Work carried out around the clock.