The protection system implements substation domain protection based on the differential principle.
Second, to respect the demands of the philosophy of difference, the genetic principle must itself be a differential principle.
CS protection is based on current differential principle and its coordination ensures the reliability of nearby backup protection.
In CS protection, differential principle is applied and multiple IEDs can cooperate by information sharing and function coordination to implement extended differential protection.
As the main protection based on differential principle is simple and reliable, this case only analyzes the MS protection based on centralized searching method.
The differential principle can be easily applied within a substation and involves the cooperation of multiple IEDs by sharing information and using functional coordination to implement an adaptive differential protection scheme.
A comparative performance analysis of the proposed protection technique and the former methods, that make use of the current differential principle, suggest that the proposed technique offers a more secure protection solution of the standard-delta PST.
Based on the CS concept in Framework of coordination backup protection scheme section, the IEEE 14-node system is divided into two substations (CS_1 and CS_2) in Fig. 4, and the two CSs dispose substation domain protection separately based on differential principle.
Some papers have proposed power differential protective principles, which analyze the integrated comprehensive information to reflect the power unbalances caused by system faults.
The case of piecewise continuous conditions and researching the minimum value of fractional differential equations principles will be considered in a future work.
