Study of the Power Balance and Reliability of Power Plants Based on Renewable Energy in the Power System of the Ryazan Region

Abstract

On the territory of the Ryazan region, there are currently five 5 power plants with an installed electric capacity of 3,759 megawatt, including two gas turbine thermal power plants, which partially use an alternative fuel of the first generation (biogas) obtained from recycled organic waste through their processing. Experiments on conversion the gas turbine power plants to alternative fuels are being carried out. (Research purpose) The research purpose is to determine the power balance and reliability indicators of power plants based on renewable energy in the power system of the Ryazan region. (Materials and methods) Authors have investigated two gas turbine thermal power plants in the Ryazan power system in Sasovo and Kasimov. The reliability indicators of the gas turbine station equipment were calculated. (Results and discussion) Due to the commissioning of the second stage of the gas turbine power plant in Sasovo and its transfer to alternative sources, authors predict an increase in the growth of electricity generation. Authors considered the system reliability of the gas turbine station. (Conclusions) Analysis of power and electricity balances of power plants based on renewable energy in the power system of the Ryazan region showed that their share in the total electricity generation does not exceed one percent. It was determined that the probability of failure-free operation of electrical equipment lies in the range from 0.9 to 0.98. It was found that the probability of failure-free operation of the equipment included in the high voltage switchgear (10 kilovolts) lies below the standard and is up to 0.93. It was revealed a high probability of failure-free operation of step-up transformers up to 0.99, switching and protective equipment as part of a low voltage switchgear from 0.93 to 0.98. It was found that the transfer of gas-turbine stations to alternative fuel (biogas) obtained from recycled organic waste, will not cause a decrease in the reliability of power supply, since the estimated probability of failure-free operation of the equipment corresponds to or exceeds the normative value of 0.95, and the recovery time does not exceed 2.82 hours.