青岛理工大学毕业设计(论文)
ABSTRACT
This graduation project is designed for the factory transformer substation, to
certain questions in factory transformer substation design: the load computation, the
analysis of three-phase short-circuits, the short-circuit current computation, the choice
and verification of high and low pressure equipment, the transformer relay protection,
the secondary circuit of the transformer substation and the automatic device, anti-
thunder and the connection to the earth, the transformer substation overvoltage
protection, the measurement, the idle work compensated and so on, All the above
aspects and the structure of the power supply host wiring topology have been stated.
The transformer substation with a 10kV single power source coil in it uses
1600kVA main transformer, the biggest computation shoulders of which is 1636kW.It
adopts the shunted capacitor to carry on the low pressure centralism for compensation
and sets protection for the transformer by carring on the electric current to it breaking
the speed of the flow gas protection, garrisons accerding to the third kind of anti-
thunder buildings,and users the strong and weak electricity union earth system to
carry on the protection to the building.
Based on the computation of short-circuits to the power supply system, the
project has a choice design of the power cable and the electrical equioment and a
preliminary design to the outdoors plane arrangement at the same time.
Keywords
: the power distribution ,supply in factory,the relay protection
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