Electrical Part Design Of 35kv Substation

This paper mainly described a design about the 35 kV transformer substation.The contents of the design include the first part of the electric design and the second part of the design and calculation.In the first part,we should firstly carry on total analysis,calculation to the electric system and the transformer substation.Then,make sure the form of the lord connects for the transformer substation.After the burden calculation,make sure the number and capacity of the lord transformer substation,and the design of station.Sometime,we should carry on short-circuit electric current calculation,the selection of electric equipments and the comprensate of reactive power.After the concrete calculation,considering the construction of transformer substation,we need to design electric distribution equipment for the plane’s design and the establishment of rationalization.In the second part,it is necessary to consider comprehensivly the protective way of system,the running way of system,and the choice of short-circuit on the aboving basis of carrying on settle calculateIn this paper,a stable and efficient substation is designed with actual power grid conditions.The substation is based on the mature technology,and the necessary transformer is selected by the corresponding calculation and checking of the type and quantity of the Transformers needed for the power station.On the basis of this,the corresponding current at the corresponding point of the system and the corresponding capacitance value at the corresponding time are calculated under the working state of the short-circuit,the maximum and minimum operating state of the whole power plant system.On the basis of above,the corresponding opening and closing current of the system’s high voltage circuit breaker is calculated.And through the mature traditional relay protection device and the integrated design of SCM,design a new intelligent relay protection system,finally through the system integration and the actual demand design of the whole substation reactive compensation system,improve the efficiency of the whole substation system,increase the practicality of the design.After integrating intelligent relay protection system and reactive power compensation system,the whole substation system can better adapt to the whole grid system,and has sufficient stability and applicability.This paper is of great significance to the intelligent construction and efficient operation of the substation.