Analysis of operating modes of power transmission lines connecting TPP with a capacity of 2240 MW with units of 7x320 MW to the power system
Students Name: Huchok Ruslana Vasylivna
Qualification Level: magister
Speciality: Power Stations
Institute: Institute of Power Engineering and Control Systems
Mode of Study: part
Academic Year: 2020-2021 н.р.
Language of Defence: ukrainian
Abstract: The level of energy development has a decisive influence on the state of the economy in the country, solving social problems and living standards. The goal of the welfare state, which according to the Constitution is Ukraine, should be to comprehensively ensure the well-being of citizens. One of the most important components of well-being in civilized countries is to provide citizens with heat and electricity. The Constitution of Ukraine provides for the right of citizens to a sufficient standard of living and a safe environment for life and health, which obliges the state to create appropriate conditions for economic development. The key to the implementation of these tasks should be full, reliable and environmentally safe satisfaction of the needs of the population and social production in energy products. Instead of the tasks of energy supply of quantitative development, which the economy of Ukraine has been following for decades, energy should move to energy supply of sustainable economic development, which is the focus of today’s developed countries. Providing the country’s economy and social sphere with the main types of energy (electricity and heat, motor and boiler-furnace fuels), and raw materials for the needs of chemistry, petroleum and coal chemistry, metallurgical industry (coking coal, oil and gas products) relies on Fuel and Energy Complex of Ukraine (FEC) Thermal power plants (TPPs) on fossil fuels, which have remained the main industrial source of electricity in Ukraine and the world for many decades, cope best with this. The main sources of primary energy for thermal power plants are fossil fuels - coal, natural gas and oil. The object of research is a condensing power plant with a capacity of 2240 MW with units of 7x320 MW. The subject of the research is the established and post-emergency modes of power transmission lines. Purpose - the purpose of this work is to analyze the steady-state and post-accident modes of operation of the power plant to form a conclusion about the possibility of implementing the developed condensing power plant. The input data for this work were daily power graphs of power systems, voltage classes of telecommunication lines with power systems. In this paper, a possible scheme of condensing power plant with a capacity of 2440 MW is considered [1-4]. For it in the software complex DAKAR [5] the digital model of CES is formed. The power plant was analyzed and the scheme of the power plant was formed; schemes of switchgear of 500 and 220 kV; quantity, selected type and power of power transformers. The DAKAR software package includes power plant operating modes - normal, post-emergency, only 6 modes. Analyzing these modes of operation of the power plant, it is seen that the currents in the power lines do not exceed the maximum allowable for the selected cross sections of wires. Studies of steady-state EC regimes - normal, post-accident have shown that the developed CES can be implemented. Key words: power system, power station, overhead lines, substations, steady state, post - emergency mode, current, voltage. List of used literature sources 1. Szeged MS "Electrical Networks and Systems" Lviv 2007. Lviv Polytechnic State University Publishing House. 488 s. 2. L.D. Rozhkova, VS Kozulin "Electrical equipment of stations and substations" M., Energy 1980 3. B.N. Неклепаев, И.П. Kryuchkov "Electrical part of power plants and substations" M. Energoatomizdat 1989 4. Technical operation of power plants and networks. Rules. The first official edition. Ministry of Fuel and Energy MPC 34.20.507-2003 - Kyiv 2003 - 598 p. 1977 5. https://dakar.eleks.com/