Characteristics of the construction object

Purpose of the object: production of electrical energy based on photoelectric conversion of solar radiation energy into electrical energy. The proposed option for connecting the SES to the UES is in the cut of the 110 kV overhead line. Installed capacity - 60 MW. To convert the direct current of photovoltaic solar modules (FSM) into three-phase alternating current, block-modular inverter installations (BMIU) are used. For the issuance of the generated energy to the adjacent power system, the project provides for a 110 kV switchgear as part of the solar power plant. In the future, the Orenburg SES is connected to the existing electrical network via a 110 kV overhead line. The electrical power network of the solar power plant consists of four components, differing in different levels of voltage and type of current. The first is the conversion part. It contains DC circuits distributed over a large area and including 206250 FSM, radial and trunk DC cable lines, adders and input circuits of inverters installed in the BMIU. The second - three-phase AC circuits with voltage up to 1 kV, including: output circuits of inverters; switching equipment up to 1 kV; LV windings of BMIU transformers. The third - three-phase alternating current circuits with a voltage of 10 kV, including myself: HV winding of BMIU transformers; switching equipment 10 kV BMIU; 10 kV cable from BMIU to 10 kV switchgear; KRU equipment 10 kV; conductor to windings of LV transformer 10/110 kV; windings of LV transformer 10/110 kV. Fourth - three-phase AC circuits with a voltage of 110 kV, including: windings of HV transformer 10/110 kV; 110 kV switchgear equipment. SPP high voltage switchgears are made according to the following schemes: on the 110 kV side - an open switchgear, made according to the 6H "Triangle" scheme; on the 10 kV side - a complete switchgear, made according to the "Two busbar systems" scheme.

Information about the needs of SES in fuel, gas, water and electricity

Water supply is carried out according to the terms of reference. For the household needs of the personnel, water comes from tanks, each with a volume of 0,75 m3 - 4 pcs. Tanks (overall dimensions V-1340xSh-600xD-1335, service life 30 years). During operation, it is possible to replace the containers. For drinking needs - imported bottled drinking water. For the preparation of hot water for washbasins, it is planned to install electric instantaneous water heaters with a capacity of 2 l / min N = 3.5 kW. Estimated water consumption for household needs is determined according to SP 30.13330.2012 and SNiP 2.04.01-85* (Appendix No. 2 and No. 3). For the OPU building combined with switchgear: - qtot = 0,198 l/s (second flow of total water); qtothr = 0,197 m3/h (hourly consumption of total water); qtotcyT = 0,075 m3/day (daily total water consumption); qh = 0,125 l/s (second flow of hot water); qhhr = 0,111 m3/h (hourly hot water consumption); qhcyT = 0,033 m3/day (daily hot water consumption);  qc = 0,130 l/s (second flow of cold water); qchr = 0,117 m3/h (hourly consumption of cold water); qccyT = 0,042 m3/day (daily consumption of cold water). Dfor the entrance building: qtot = 0,167 l/s (second flow of total water); qtothr =0,177 m3/h (hourly consumption of total water); qtotcyT = 0,064 m3/day (daily total water consumption); qh = 0,109 l/s (second flow of hot water); qhhr = 0,113 m3/h (hourly hot water consumption); qhcyT = 0,028 m3/day (daily hot water consumption); qc = 0,109 l/s (second flow of cold water); qchr = 0,113 m3/h (hourly consumption of cold water); qccyT = 0,036 m3/day (daily consumption of cold water). Wastewater disposal from the sanitary appliances of the OPU building combined with the checkpoint is provided for in the designed network of gravity domestic sewerage into a storage tank with a volume of 5,5 m3. The storage tank is a storage sewer well made of reinforced concrete rings according to series 3.900.1-14.