Factors considered in selecting distributed busbar protection

Research on distributed busbar protection applied to digital transformer substation

The principles and characteristics of the distributed busbar protection are introduced.

With the rapid advance of the digital substation, the demand for distributed busbar protection applied in the substation is becoming increasingly urgent.

Research of communication system in the distributed bus protection;

According to the developing trend of microcomputer bus protection,a scheme of distributed bus protection based on direction decision principle is presented,and the composition principle of the bus protection is discussed.

Compared with the structure of centralized bus protection, distributed bus protection has the advantage of distributed arrangement, saving secondary cable, simple connection, strong ability in electronmagnetic immunity.

It is pointed out that the central microcomputer-based bus protection is the mainstream for power systems in China today, and the distributed microcomputer-based bus protection is the trend in the future since it suit.

Reason analysis and preventive measures of a busbar differential protection maloperation

Combining the actual application of BP-2A,P-2B and RCS915A/B busbar differential protection devices manufactured by NanRui Company,the problems needing attention of microcomputer-based busbar differential protection in the operating maintenance are introduced.