110Kv Transformer Substation Design

With the development of economy and the improvement of people’s living standard, the requirement of power quality is increasing. The country put forward to accelerate city net and rural power grid construction and transformation, stimulating domestic demand, development plan, city net and110kV substation construction of the rapid development of rural power network. Due to the construction site of geographical conditions of perplexing and other objective conditions, how to design the network of city and rural110kV substation, is a national network of city and rural construction, transformation of the need to study and solve main task.Transformer substation is an important part of power system, and its safety and reliability are closely related with the development of national economy. This design is proposed mainly according to the request of the debriefing, supposing the present load condition of certain place and analyzing the load development trend. The necessity of establishing the substation is clarified from the aspect of load increase, and the110kV,35kV,10kV and the main lines are determined by describing the substation to be set up and analyzing the concerning load data (including its security, economy and reliability). Meanwhile, the number, capacity and type of the main transformer are made certain through the load calculation and the power supply range, thus making definite the capacity and model numbers of the transformer. Finally, according to the results of calculating of the maximum work electric current and short circuits, high voltage breaker, isolator switches, bus-bar, voltage transformer and current transformer can be selected, and then the design of110kV electricity primary system is completed according to maximum load current assurance.