Principles to be followed for microcomputer protection

The microcomputer protection device has become an indispensable part in the power station, and its role in the power station cannot be ignored.Therefore, in the choice of microcomputer protection should be taken seriously, careless not.But for a power station, the choice of microcomputer protection should pay attention to the following points.

　 　 　 　1. Whether to meet the actual requirements of the site, including protection function, voltage level, whether to have a print interface, communication mode, the number of fault information storage, etc.Different manufacturers, different models, these parameters must be different.Considering these factors, it is necessary to combine the actual technical requirements on the site. The technical requirements are high, and of course the price is expensive. Generally speaking, the equipment with high cost performance ratio should be selected.

　 　 　Second, for a power station.Use microcomputer protection as much as possible for one manufacturer, and as much as possible for the same series of products.In this way, the hardware can be standardized, and some of the hardware is interchangeable, such as the power plug-in.And microcomputer protection of the size of the opening as far as possible unified, so more conducive to the maintenance of microcomputer protection.Appear a problem to need to look for a microcomputer to protect manufacturer to be able only, realize one to one.Not only that, the kinds of spare parts needed are relatively few, and the cost will be saved a lot.

　 　 　 Three, the reliability of the microcomputer protection depends on the rationality of the protection function criterion, such as the backup self-throw, should consider the TV break, when the TV break, the protection should not act, this needs to take into account the TV break lock backup self-throw.

　 　 　Four, the microcomputer protection device in the field debugging process to do a good job of each microcomputer protection device experiment, set the fixed value.Such as the common fast break protection, overcurrent protection, these for the general microcomputer protection debugger, it is very easy to do.However, for some unusual protection functions, such as overexcitation protection, distance protection, optical differential protection, rotor grounding protection, etc.These protection functions are not common, some debugging units of the microcomputer protection debugger do not understand, sometimes directly ignore the experiment.This is wrong, every kind of microcomputer protection function as long as the field actual needs, it must be serious and really do a good job, and then out of the experimental protection, this process must not be careless.