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Control of the Central Incident
and Warning Signal of Substation Based on PLC
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£Û¹Ø¼ü´Ê£Ý Î÷ÃÅ×ÓS7-200£» ±äµçÕ¾£» ÖÐÑëʹʺÍÔ¤¸æÐźţ» ÒôÏìÐźÅ
Control of the Central Incident
and Warning Signal of Substation Based on PLC
Electrical Engineering And Automation Specialty
Abstract: At present the central signal system of the majority of our substations and distributions is still using the traditional relay contactor control system£¬whose disadvantages are multiple and complex wiring£¬bulky, slow movements£¬difficult to repair, prone to malfunction£®For this situation£¬this paper uses the Siemens S7-200 and designs the central signaling system to control the substation instead of traditional relay contactor£®The central signaling system mainly includes incident sound signals¡¢warning signals and light signals which composes the I/0 allocation tables and flowing diagram and the ladder diagram control programs of the central signal system£®Through the simulation£¬it is able to currently emerge sound signals and light signals when the facilities generate malfunction and abnormal phenomenon£¬it assists people to find and orderly deal with it so as not to broaden the incident ,and fulfills the requirements of the system control£®
Key words: Siemens S7-200; substation; central signal system; audio signal
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