Indoor primary grid substation

Abstract

The invention relates to an indoor primary grid substation. The indoor primary grid substation is characterized by comprising a support, an isolating switch, a motor-driven mechanism, and a transmission tube, wherein the isolating switch in the substation ensures high flow capacity, high mechanical strength, high corrosion resistance and better heat dissipation performance under 6000A current; a moving conductive arm and a base are connected through an insulating pull rod, opening and closing simultaneity is guaranteed by regulating the insulating pull rod, so as to improve stability; after aproduct is debugged, in the opening state, the insulating pull rod just passes a dead point and is positioned by a limiting bolt, thereby helping lower retention in the opening state and improving security; a movable contact adopts a self-powered contact finger and is supported by dual rows of contact, each phase has multiple contact fingers, so that contacts of a conductor are increased, contactand flow are guaranteed reliable, and dynamic heat capacity is higher; the contact finger can be plated with silver, is self-lubricated, is maintenance-free, and is reliable when contacted for long; and due to use of static contacts, the indoor primary grid substation is small in volume but has a large heat dissipation area, and cooling airflow is in accordance with a fluid law.

Description

technical field [0001] The invention relates to the field of main network substations, in particular to an indoor main network substation. Background technique [0002] Generally, the vertical open isolating switch used in the three-phase AC rated voltage of 24kV and the rated frequency of 50-60Hz power system can disconnect or connect the high-voltage line under the condition of voltage and no load current; Change the connection and change the operation mode; implement safe electrical isolation between the overhauled busbar and high-voltage electrical appliances such as circuit breakers; in some operating modes, it is used to switch off the busbar conversion current; The small inductive current of the load transformer and the small capacitive current of opening and closing the no-load bus. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an indoor main network substation, which can solve the problems of poor sel...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an indoor main network substation, which can solve the problems of poor self-lubricating ability, short maintenance cycle, long-term contact instability, large volume of static contacts and small heat dissipation area of ​​general indoor main network substations.

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