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DL 451-1991 DL 451-1991_English: PDF (DL451-1991) Standard ID Contents [version] USD STEP2 [PDF] delivered in Standard Title (Description) Related Standard Status PDF DL 451-1991 English 679 Add to Cart 5 days CDT Telecontrol Communication Protocol DL 451-1991 Obsolete DL 451-1991 BASIC DATA Standard ID DL 451-1991 (DL451-1991) Description (Translated English) CDT Telecontrol Communication Protocol Sector / Industry Electricity & Power Industry Standard Classification of Chinese Standard F21 Word Count Estimation 17,168 Date of Issue 1991/11/4 Date of Implementation 1992/5/1 Drafting Organization Ministry of Energy CEC Administrative Organization National power remote communication Standardization Technical Committee Regulation (derived from) China-Power-Association Standard [2014] 268; State Energy Bureau 2015 No. 1 Notice Summary This standard specifies the grid SCADA telecontrol protocol in circulation function, frame structure, word structure and information transfer rules. This standard applies to a remote point in a circular channel structure and byte synchronous mode of information transfer remote Telecontrol equipment and systems. This standard also applies to cyclic scheduling between telecontrol protocol forwarding information in real-time remote system.