The design and implementation of complex-network DA in Ben Xi power supply company

Distribution automation can significantly improve the reliability and decrease the system energy loss. The adoption of loop topological structure in power distribution network is a popular choice in many cities for its high reliability in power supply. The complexity in the loop network increases difficulties in fault handling and recovery, which is a main obstacle in the implementation of loop network DA. Two modes of fault handling are introduced in this paper and the characteristics of them are discussed. Strategies for the fault isolation and recovery are introduced then. The design and implementation for a complex-network DA, which are applied in a reconstruction project in a power supply company, are introduced in details. The application of feeder terminal units (FTUs) in the supervision and control of the network is the critical technology to implementation of DA. Thus, fault can be detected and fault signals are transferred to the control center promptly. Fault handling and recovery are processed in the control center, and trip commands are executed. And the robustness in these operations is also considered.