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A cooling control system for a diverter valve

A control system, cooling control technology, applied in general control systems, control/regulation systems, program control, etc., can solve problems such as poor reliability, and achieve the effect of improving stability and reliability

Active Publication Date: 2017-09-29
XUCHANG XUJI JINGRUI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an external cooling control system of a converter valve cooling system and a converter valve cooling control system to solve the problem of poor reliability of the converter valve water cooling system in the prior art

Method used

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  • A cooling control system for a diverter valve
  • A cooling control system for a diverter valve
  • A cooling control system for a diverter valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as image 3 As shown, the converter valve cooling control system of the present invention includes an internal cooling control system and an external cooling control system. The internal cooling control system includes a CPU processing unit and a photoelectric communication module. The external cooling control system includes a photoelectric communication module, an interface module, and an external cooling system. The PLC system outputs modules, detection control relays KS, and intermediate relays KA1-KAn. The photoelectric communication module is connected to the interface module, the interface module is connected to the output module of the external cooling PLC system, the output module is controlled and connected to the detection control relay KS, and the normally closed contacts of the detection control relay KS are respectively driven and connected to the intermediate relays KA1-KAn.

[0019] The internal cooling system CPU continuously detects the real-time ...

Embodiment 2

[0021] In the above embodiment, the external cooling control system is redundantly provided with a second external cooling control system B, such as Figure 4 As shown, the second external cooling control system B includes a second detection control relay KS', and the detection control relay KS is connected in series with the normally closed contact of the second detection control relay KS' to drive and connect an intermediate relay. Its working state is the same as that of the above-mentioned embodiment, so it will not be repeated here.

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Abstract

The present invention relates to a converter valve cooling control system. The converter valve cooling control system comprises an inner cooling control system and an outer cooling control system, the inner cooling control system comprises a CPU and an inner cooling photoelectric communication module, and the outer cooling control system comprises an outer cooling photoelectric communication module, an interface module and an output module. The CPU controls and is connected with the output module via the inner cooling photoelectric communication module, an optical fiber, the outer cooling photoelectric communication module and the interface module, and the outer cooling control system also comprises a detection control relay KS and an intermediate relay. A normally-closed contact of the detection control relay KS drives and is connected with the intermediate relay, and a normally open contact of the intermediate relay is used to control and connect an auxiliary power supply branch of an AC load. When the sending communication of the inner cooling system and the outer cooling system goes wrong, the detection control relay is power-off, and the normally-closed contact of the detection control relay is closed, so that the AC load is in live-line operation, a spraying pump and a cooling fan entre a working state, and the stability and the reliability of a converter valve water-cooling system are improved.

Description

technical field [0001] The invention belongs to the field of high-voltage direct current transmission, and in particular relates to a cooling control system for a converter valve. Background technique [0002] The technical and economic advantages of HVDC transmission system make it play an important role in long-distance large-capacity power transmission, cross-regional networking and submarine cable power transmission. At present, high voltage direct current transmission (HVDC) has been widely used in my country and other countries. The converter valve is the most critical auxiliary equipment in the converter station of the HVDC transmission system, and its working condition directly affects the reliability of the safe operation of the HVDC transmission system. While the converter valve is transmitting electric energy, it will also generate a large power loss and generate a lot of heat. Therefore, reliable cooling equipment is needed to cool it so that the converter valv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
CPCG05B19/0425G05B2219/25314
Inventor 景兆杰马根坡王强
Owner XUCHANG XUJI JINGRUI TECH