Research of modes of an electric grid fragment of PJSC "Zakarpattyaoblenergo" on condition of its perspective development and reconstruction of substation "Vynogradiv-2"
Students Name: Yurko Yurii Ivanovych
Qualification Level: magister
Speciality: Electric Systems and Networks
Institute: Institute of Power Engineering and Control Systems
Mode of Study: full
Academic Year: 2021-2022 н.р.
Language of Defence: ukrainian
Abstract: There will be described the project of the electrical substation 110/35/10 кВ kV called "Vynohradiv-2" in a diploma paper which is dedicated to the development of power grid. There will be also described the selection of electrical equipment, planning of operational mode, and technical and economical indicators of the functioning of power grids. Besides, there will be introduced technical grounds for using of rigid tyres of pipe type in the substation with relevant technical calculations. Study object – the substation "Vynohradiv-2", with is located in the Zakarpattia region in the Berehiv district near the town of Vynohradiv. This transformer substation belong to the "branch" type of substation. The main task of the substation "Vynohradiv-2" is the reliable supply of electricity to consumers on the low and middle sides. The power of the substation "Vynohradiv-2" is 20 MW. Scope of research – the modernization of the substation "Vynohradiv-2" for new needs of consumers in electricity. Solving and making technical and design decisions, to improve existing performance, are designed. Goal of research. Development of the electrical network. Improving the operational characteristics of the substation "Vynohradiv-2". Technical improvement of existing equipment. Assessment of the feasibility of implementing a reconstruction project. Briefly put research results. Reconstruction of the substation "Vynohradiv-2" is carried out. The schemes of the electric network, namely the mode of maximum and minimum loads and the characteristic post-accident models, are calculated. Keywords: project, reconstruction, substation, equipment, transformer. References 1. Seheda M. S. Electrical systems and networks: Textbook. 2 nd view.- Lviv: Polytechnic National University Publishing House, 2009.-488p. 2. Rules of arrangement of electrical installations. – H.: Publishing House “Fort”,2017 -760 p. 3. Bahor Z. M., Pazina J.S. “Typical shames of electrical AC switchgear of 6- 750kV”. Methodical instructions for independent preparation for practical classes in the discipline “Fundamentals of design of substations and power lines”, for course and diploma design for the direction of training 6.050701 “Electrical Engineering and Electrical systems and networks” of all forms of education/ Lviv: National university “Lviv Polytechnic”, 2012. – 36p. 4. Bahor Z. M., Pazina J.S. “Selection of power transformers of the substation of electrical networks”. Methodical instructions for independent preparation for practical classes in the discipline “Fundamentals of design of substations and power lines”, for course and diploma design for the direction of training 6.050701 “Electrical Engineering and Electrical systems and networks” of all forms of education/ Lviv: National university “Lviv Polytechnic”, 2012. – 21p. 5. Bahor Z. M., Durnyak B.I. “Selection of circuit breakers and disconnectors for the substation of electrical networks”. Methodical instructions for independent preparation for practical classes in the discipline “Fundamentals of design of substations and power lines”, for course and diploma design for the direction of training 6.050701 “Electrical Engineering and Electrical systems and networks” of all forms of education/ Lviv: National university “Lviv Polytechnic”, 2012. – 33p. 6. Bahor Z. M., “Selection of current transformers for the substation of electrical networks”. Methodical instructions for independent preparation for practical classes in the discipline “Fundamentals of design of substations and power lines”, for course and diploma design for the direction of training 6.050701 “Electrical Engineering and Electrical systems and networks” of all forms of education/ Lviv: National university “Lviv Polytechnic”, 2014. – 52p. 7. Bahor Z. M., “Selection of voltage transformers for the substation of electrical networks”. Methodical instructions for independent preparation for practical classes in the discipline “Fundamentals of design of substations and power lines”, for course and diploma design for the direction of training 6.050701 “Electrical Engineering and Electrical systems and networks” of all forms of education/ Lviv: National university “Lviv Polytechnic”, 2014. – 36p. 9. Bahor Z. M., “Selection of overhead line insulators”. Methodical instructions for independent preparation for practical classes in the discipline “Fundamentals of design of substations and power lines”, for course and diploma design for the direction of training 6.050701 “Electrical Engineering and Electrical systems and networks” of all forms of education/ Lviv: National university “Lviv Polytechnic”, 2014. – 14p. 6. Bahor Z. M., “Selection of current transformers of the substation of electrical networks”. Methodical instructions for independent preparation for practical classes in the discipline “Fundamentals of design of substations and power lines”, for course and diploma design for the direction of training 6.050701 “Electrical Engineering and Electrical systems and networks” of all forms of education/ Lviv: National university “Lviv Polytechnic”, 2014. – 18p. 10. Lezhnyuk P.D., Lagutin V.M., Teptya V.V. Design of the electrical part of electric stations: Textbook- Vinnytsia: VNTU, 2009. - 194p.