Sampling value differential protection can guard against TA saturation by selecting appropriate value of S, and it has a well application value in engineering.
Sampling value differential protection can be adopted as main protection for motor when it works in frequency-conversion mode.
同时，针对变频运行时电动机主保护缺失问题，提出采用采样值差动保护作为变频电动机主保护的解决方案。
3
Traditional traveling wave differential protection needs to transmit large amount of real-time high-frequency sampling data, which is difficult for current telecommunication methods.