Distribution Automation And Protection Of Offshore Platform Power System Configuration Is Optimized

CHENG DAO oil field is our country first large-scale epicontinental sea oil field, has developed has completed the annual production crude oil 2 million tons scales, CHENG DAO oil field sea platform construction pattern with other offshore fields pattern existences obvious different, large-scale central platform construction few, satellite well group platform construction many, rolls the development sign obviously, used have been massive 6kV volt cable. The seabed high tension cable characteristic is about, the multi- branches, the line short network, are not easy to satisfy and the protection coordination, often had the protection to resist to move or to jump the ranks trips, expands the accident power cut scope, the power cut time has been long, seriously has restricted the oil field regular production and on heavy 30 million ton oil gases equivalent duty completing.The union sea platform present situation, proposed the sea platform electric power distribution automated system basic structure, how does choose the adaption marine environment to control and protection equipment, embarks from the auto-adapted principle, according to the system electric current protection analysis, has proven the auto-adapted principle in the sea platform electrical power system relay protection superiority, has made the certain degree discussion from the principle to the future sea electrical power system relay protection development.The sea platform electric power distribution automated system basic structure is: In the structure uses two level control, three networks ways, safe reliable, advanced are easy to expand.The marine environment control and protection equipment choice is: Strictly according to our country classification society and the national standard standard related request, controls to the marine environment the equipment to carry on the strict salt mist, the leaf mold, the humidity and corrosion.Auto-adapted protection application: The auto-adapted electric current protection application inverse time lag principle, to seriously has short-circuited the breakdown rapidly to make the response, strengthened the protection sensitivity, reduces the breakdown influence scope.