Problems existing in current protection in traditional stage

1, slow reaction speed: the traditional segmented current protection needs to go through multiple protection stages to achieve complete protection, so the reaction speed is slow.

2. High misoperation rate: Because there are overlapping areas between stages, it is easy to cause misjudgment and misoperation.

3. Complex configuration: The traditional segmented current protection needs to carefully configure each protection level, which increases the workload and error rate.

4. Difficult to adapt to the new power system: With the development and change of power system, the traditional segmented current protection is difficult to meet the requirements of new power systems such as renewable energy access and smart grid.