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"Five anti" anti-error operating system is our country's power system. A control system of switching misoperation prevent distribution in the process of power plant, substation.
Is mainly limited by technical means: error in charged spacing; false pull switch; pulling the on-load knife switch; charged with knife (wire); with a knife (ground) closing.
Switch misoperation, over the years, many times in the power system repeats cause serious accidents, is one of the key variable distribution of security, but also the power industry an important link to root as security. Power system in preventing misoperation has established a perfect organizational measures, technical measures have also been extended in a variety of mechanical lock, mechanical code lock "five anti" lockout system and computer "five anti" lockout system.
Field application shows that, in spite of all kinds of "five anti" lockout system to prevent misoperation plays an important role, but so far, all kinds of "five anti" lockout system still exist great shortcomings, has not yet reached the power system of "five anti" lockout system requirements. Therefore, according to the actual need of production safety, we introduce the British FORTRESS company production of key exchange mechanical interlock system.
Computer "five prevention" system "leapfrogging" title, this is the "five anti" system in use can not be ignored a big problem, must cause height to take seriously. Otherwise the consequence is very serious. In practical application, we found that computer keys to unlock often happened during the lock is not open, but the computer key program but have already walked to the next step, at this time can only rely on brute force, which essentially "five anti" already exist in name only, do not play the role it should.
With the wide application of substation automation system in the electric power industry, greatly changed operation mode, the manual control electric equipment, is now gradually being replaced by remote control; single station management mode gradually into the governance mode of centralized control station. In changing the operation mode, microcomputer five prevention system and how these new circumstances, into five interlocking protection range, is the primary problem to solve.
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