2013. — 8 с.The developments of multifunctional intelligent electronic devices for protection and other applications that perform synchrophasor calculations and the improvements in inter and intra-substation communications bring the industry to a time when many specialists are thinking about the use of synchrophasors for protection applications.
The paper describes first the introduction of two synchrophasor performance classes defined in ieee pc
37.118.1. The p class is intended for applications such as protection that requiring fast response, while the m class is intended for applications which could be adversely affected by aliased signals but do not require the fastest reporting speed.
Synchrophasors based applications to substation protection are later discussed. Examples considered in the paper include line and bus differential protection.
Transmission line protection using synchrophasors for the calculation of the differential current is later described. Requirements for the communications interface between the substations are analyzed. The impact of loss of time synchronization in one of the substations is also discussed.
The testing of synchrophasors based protection systems is described at the end of the paper.
