Re-Design and Realization of Automatic Control for the Compressor Station of the 2 kW Helium Cryoplant

A large-scale compressor set of a 2 kW helium cryoplant, as one of the subsystems of EAST (the experimental advanced superconducting tokamak), is arranged in a two-stage series-parallel structure. A fully automatic control system used to handle the compressors' on/off/scheduling and the pressur...

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Bibliographic Details
Published inPlasma science & technology Vol. 11; no. 4; pp. 504 - 509
Main Authors Hansheng, Feng, Yanfang, Bi, Ming, Zhuang
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.08.2009
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Summary:A large-scale compressor set of a 2 kW helium cryoplant, as one of the subsystems of EAST (the experimental advanced superconducting tokamak), is arranged in a two-stage series-parallel structure. A fully automatic control system used to handle the compressors' on/off/scheduling and the pressures' adjustment was developed. To reduce the long time lag and the uncertainty with the energy slide valves effectively, expert rules in combination with proportional-integral-derivative (PID) algorithms were applied. Safety protection and status analysis mechanisms were built up to reinforce its stability and robustness. The new system has been applied to the EAST operations and is operated stably. The problems in the previous semi-automatic system, such as the big overshoot of pressure and complexity of the operations, were solved.
Bibliography:ObjectType-Article-2
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ISSN:1009-0630
DOI:10.1088/1009-0630/11/4/28