Research And Design Of The Electrical Control Part Of A 32MW Water Conservancy Project

With the rapid development of the global economy and society,whether it is the development of national industry or the continuous improvement of people’s living standards,the demand for electricity in the whole society is increasing day by day.Since the beginning of the 21st century,hydropower projects in China have been developing at a high speed.Compared with thermal power generation and other traditional power generation types that cause greater environmental pollution,hydropower generation has advantages such as clean,pollution-free and recycling and renewable.Therefore,vigorously developing hydropower will effectively optimize the energy structure,increase the proportion of renewable and clean energy,and bring very favorable economic and social benefits for the rapid development of the region.Based on a detailed analysis of the background,significance and research status of the subject,this thesis mainly introduces the general situation of the water conservancy project,and gives the selection scheme of the type and number of generating units of the project.Secondly,this thesis introduces the way to connect the water conservancy project to the power system.And the selection method of rated voltage of hydro-generator used in this project is analyzed.According to the voltage level,number of the circuit,position,function and operation mode of the power station in the system of the water conservancy project,four main electrical wiring schemes are proposed,and the optimal main electrical wiring scheme of the water conservancy project is selected by comparing the four schemes.Thirdly,the method and procedure of short circuit current calculation are introduced,and the short circuit of the water conservancy project is calculated.On the basis of the calculation result of short circuit current,the primary equipment selection of this water conservancy project is preliminarily carried out.According to the requirements of working accuracy in the bidding design stage and the project design requirements of state grid corporation of China,the preliminary selection scheme of primary equipment of the water conservancy project is verified,and the final selection of electrical equipment of the water conservancy project is determined.Fourthly,this thesis introduces the electrical layout scheme of the water conservancy project.The overvoltage protection and earthing protection schemes of the project are proposed with the layout scheme.Finally,according to the relevant technical requirements and existing equipment status,the technical design scheme of the secondary side of the project and the selection scheme of the related equipment function configuration are proposed.The completion of the project will bring good economic and social benefits to the dispatching operation and social development of Jiangxi regional power grid.