An implementation on the new method of displaying primary system diagram of middle-voltage switchgear based on the database

In the power supplying system,the implementation of the online displaying of the primary system diagrams of middle-voltage switchgear in various measuring and protection device is very important.It is the key point that how to create and call up the font character database.The new method of creating the font character database by using some features of database,which greatly decreases the capacity of font character database.The online displaying of the primary system scheme is analyzed and partitioned,the scheme structure is feasible,and the displaying implementation is convenienet.