2. Adaptive concept and the architecture of the
protection system
Actually, protection systems used in distribution systems
function in an off-line predetermined manner. Technicians and
engineers, after analyzing most of the critical power system
conditions, select the parameters for relay setting.
With the development of microprocessor-based relay, some
traditional obstacles, in determining real time settings of relay
for all normal and abnormal operating conditions, are overcome.
In fact in order to change the relay settings according to external
conditions, microprocessor-based relay can collect information,
handle complex logic and communicate with other equipments
by continuously monitoring and analyzing the power system.