The fault diagnosis and protection schemes and application cases for smart distribution systems from ac 6 kV to 20 kV are provided by this recommended practice, covering security requirements, architectures, and configuration, as well as basic functions and technical indexes of software systems and hardware terminals and requirements of information exchange. Schemes provided in this document are adaptable to various operation modes, control patterns, equipment conditions, and reliability requirements of distribution systems. This recommended practice is mainly based on engineering practices in the voltage range of 6 kV to 20 kV. The proposed fault location, ...

This recommended practice focuses on the configurations and schemes of fault diagnosis and protection corresponding to different grid operation modes, control patterns, equipment conditions, and reliability requirements in smart distribution network. With the development of information and communication technology (ICT ), there is diverse and abundant data in monitoring and control systems for the distribution network. And due to the connection of distributed energy resources (DERs) and electric vehicles, the distribution network becomes more diversified and complex. Considering different distribution network conditions and requirements, this recommended pra...

In view of the fact that a single fault diagnosis and protection strategy cannot adapt to various configurations of smart distribution networks, an effective fault diagnosis and protection method should be able to adjust with changes of the monitoring and operating conditions, network topology, and reliability requirement of smart distribution networks. Therefore, schemes for fault diagnosis and protection according to the operation modes, control patterns, equipment conditions, and reliability requirements in smart distribution grids are needed. This recommended practice provides valuable experience for planners and operators in the matter of fault diagnosi...