An angle-shaped group converter valve side connection outlet structure

Abstract

The invention discloses a connection outlet wire structure of an angular group rheological valve side, comprising three rheological converters, wherein, each upper end of the rheological convertor isfixedly connected with a first vertical valve sleeve, each upper end of the vertical valve sleeve is sleeved with a sliding sleeve, and two vertical sliding blocks are sleeved on the sliding sleeve. The invention has the advantages that when external vibration occurs, the horizontal sliding block slides on the first flat valve sleeve, two vertical sliding blocks slide on the sliding sleeve, and the first spring and the second spring work together to form a double shock absorption effect, so that the relative displacement of the exchange rheology part structure and the first flat valve sleeve part structure is small, and the damage of the exchange rheology part structure and the first flat valve sleeve part structure is avoided; At the time of vibration, part of the structure of the outletbarrel is synchronously shake, two friction blocks are disengage from the inner wall of the outlet barrel for a short time, and if the external tension force is greater than the elastic force of the torsion spring, the opportunity drives the winding roller to rotate so as to disperse the wire, thereby avoiding the wire from being broken due to excessive force.

Description

technical field [0001] The invention relates to the field of structural design of converter valve side connection outlets, in particular to an angular group conversion converter valve side connection outlet structure. Background technique [0002] In the ±800kV UHV converter station, two sets of twelve-pulse converter valve towers are usually connected in series, and each set of twelve-pulse valve sets is arranged in a valve hall. A, B, and C three-phase converter transformers (abbreviated as "converter transformers", the same below) have valve-side bushings directly inserted into the valve hall, and are respectively connected to A, B, C The connection terminal of the three-phase converter valve tower. Although this one-to-one phase sequence wiring method is simple to operate, for the valve control protection system of the converter valve tower, in order to ensure the trigger sequence of the converter valve tower, it is necessary to change the logic control in the valve con...

AI Technical Summary

Problems solved by technology

Obviously, the wiring radian of the soft wire connected by conventional suspension insulators cannot meet the seismic requirements of converter valves in areas with high seismic intensity

At the same time, since the body weight of the 800kV converter valve tower is 4-5t, if the conventional suspension insulator is used to connect the flexible wire, the seismic displacement of the converter valve tower will be limited due to the margin of the flexible wire connected to the suspension insulator Therefore, the seismic stress of the converter valve tower will directly pull the valve-side bushing of the converter through the connecting flexible wire, which may cause damage to the terminal of the valve-side bushing of the converter.

[0004] In addition, in the conventional UHV converter substation converter valve side outlet structure design scheme, the A, B, and C three-phase converters are all connected to the bottom insulator of the suspension pipe bus through six split soft wires, and the six The lead wires of the split flexible wires are long, the electrical distance between the down-conductor of the side-phase short-circuit of the suspension pipe mother and the upper-lead wire of the side phase to the outlet line of the converter valve tower is not easy to control, and the swing of the suspension pipe mother (especially Earthquake conditions) may cause the adjacent six-split flexible wires to collide with each other, thus affecting the safety and reliability of the connection and outgoing wires at the converter valve side

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