Method of Distribution Network Tidal Current Direction Recognition and Protection Based on Cloud-Edge Collaboration
With the large-scale integration of distributed generation(DG),the traditional single-source distribution network has transformed into a multi-source power supply network,leading to misoperation and refusal issues in the traditional three-stage current protection system.To solve these problems and ensure stable operation after DG integration,this paper analyzes the impact of DG on tidal current direction,and proposes a direction recognition criterion based on fault current phase analysis.According tidal current direction,a current protection scheme based on cloud-edge collaboration is proposed.This scheme integrates direction recognition function in the protection device,which will only act when the current exceeds the setting value and the direction is correct.The results show that this scheme can not only meet the requirements of line protection range,but also accurately identify fault direction,improving the accuracy of protection devices after DG integration.
DGtidal current directioncurrent protectioncloud-edge collaboration
万方数据
维普
