Development of smart distribution grid

To enhance the service reliability and increase the penetration level of distributed generation in power systems, the smart grid has been under development for many power companies in the whole world. This paper describes the implementation of the distribution automation system (DAS) in Taiwan Power Company and how it is used to improve the service reliability of distribution systems in Taipower. With the operation of DAS system, the customer outage duration has been reduced dramatically for the fault contingency on the distribution feeders to achieve the resilient function of smart grid by reforming the function of fault detection isolation and restoration (FDIR) automatically. To support more functions of smart distribution, the advanced distribution automation system (ADAS) is proposed in this paper to cover the application of PV inverter control to reduce the system impact due to intermittent power generation by renewable energy such as wind and solar power. The ADAS will also perform the asset management of transformers to improve the utilization of distribution facilities; the FDIR function of ADAS system proposed will be extended to cover the distribution laterals and customers.