Redundant structure of loop in power plant control system

• Main Authors: HAN PEI, YIN YUEXI, CHENG LIJUN, ZHU JIANJUN, ZHANG FENG
• Format: Patent
• Language: Chinese; English
• Published: 23.01.2013
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The utility model discloses a redundant structure of a loop in a power plant control system. The structure comprises a master control module installed on a mainboard, a main loop control card connected with the master control module and a terminal board A which is connected with the main loop control card and sends a signal to corresponding equipment. One side of the main loop control card is connected in parallel with a vice loop control card and a terminal board B. One end of the vice loop control card is connected with the master control module and the other end is connected with the terminal board B. The other end of the terminal board B is connected with the equipment through the terminal board A. According to the utility model, through setting the vice loop control card, a problem of shutdown maintenance when there is a fault in the main loop control card is solved so that reliability and security of the whole control system are increased. A DMA module and a delayer are used to control a line jump betwe