Redundant switching control system of thyristor rectifying device under compensation operation in aluminum electrolytic cell

A control system and redundant switching technology, applied to the compensation structure in the electrolytic cell, the field of the redundant switching control system of the thyristor rectifier under the compensation operation in the electrolytic cell of the aluminum electrolysis industry, can solve the problem that the aluminum electrolytic cell cannot be produced normally, the aluminum liquid level Uplift, fluctuation and other problems, to achieve the effect of ensuring control synchronization, current balance, safe and reliable network communication

Active Publication Date: 2018-02-27
JIUJIANG SUN KING TECH CO LTD
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Problems solved by technology

The electromagnetic force generated by the interaction between the magnetic field and the melt current accelerates the circulation of the melt in the

Method used

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  • Redundant switching control system of thyristor rectifying device under compensation operation in aluminum electrolytic cell
  • Redundant switching control system of thyristor rectifying device under compensation operation in aluminum electrolytic cell
  • Redundant switching control system of thyristor rectifying device under compensation operation in aluminum electrolytic cell

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Embodiment

[0015] Such as Figure 1-3 As shown, the present invention works and implements in this way. The thyristor rectifier redundant switching control system under compensation operation in the electrolytic cell of the aluminum electrolysis industry mainly refers to two independent large closed-loop operation states of two busbars in the aluminum electrolysis industry. The thyristor rectifier device redundant switching control system is used. The rectifier device is composed of two sets of "3+1"+"3+1" combined mode parallel power supply and current stabilization systems. The two sets of "3+1" include 1# thyristor Rectifier unit, 2# thyristor rectifier unit, 3# thyristor rectifier unit and 4# thyristor rectifier unit, 6# thyristor rectifier unit, 7# thyristor rectifier unit, 8# thyristor rectifier unit and 5# thyristor rectifier unit; "3+1" + "3+1" combined mode Parallel power supply and current stabilization system controls 4 rectifier units, "3+1" + "3+1" combination mode Parallel ...

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Abstract

The invention discloses a redundant switching control system of a thyristor rectifying device under compensation operation in an aluminum electrolytic cell. The system comprises 1#-3# thyristor rectifying units and a control system, wherein the control system comprises a master dispatch PLC and PLCs of various units; the 1#-3# thyristor rectifying units are connected to a 2# positive bus and a negative bus in parallel; one side of the 1#-3# thyristor rectifying units is provided with a 4# thyristor rectifying unit; the outputs of the 4# thyristor rectifying unit are connected with a 1# positive bus, the 2# positive bus and the negative bus correspondingly; 5#-8# thyristor rectifying units are connected with the 1# positive bus and the negative bus in parallel; the outputs of the 5# thyristor rectifying unit are connected with the 1# positive bus, the 2# positive bus and the negative bus correspondingly; the 4# thyristor rectifying unit and the 5# thyristor rectifier unit are connectedwith a current and voltage detection circuit; and two sets of parallel power supply flow stabilization systems of a four rectification units combined mode carry out large-closed-loop control separately.

Description

technical field [0001] The invention relates to a control system for redundant switching of a thyristor rectifier device under compensation operation in an aluminum electrolytic cell, in particular to a compensation structure in an electrolytic cell in the aluminum electrolysis industry, specifically to redundant switching of a thyristor rectifier device under compensation operation in an electrolytic cell in the aluminum electrolysis industry Control System. Background technique [0002] With the increase of the working current of modern large-scale aluminum electrolytic cell, the influence of the magnetic field generated by its current-carrying busbar and melt current on its production and stable operation becomes more and more prominent. The electromagnetic force generated by the interaction between the magnetic field and the melt current accelerates the circulation of the melt in the tank, causing the aluminum liquid level to rise, deflect and fluctuate, and may even cau...

Claims

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Application Information

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IPC IPC(8): C25C3/20
CPCC25C3/20
Inventor 刘善玲刘慧林殷秀龙范文超曹杰
Owner JIUJIANG SUN KING TECH CO LTD
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