A new protection technology for smart distribution network

Because of the requirements of the accessing distribution generation and the high quality power supply to the protection of smart distribution, firstly, the drawbacks are analyzed to the existing stepped protection of distribution network; secondly, a new protection with multiple types of data based on the serial communication is proposed. The proposed protection achieves the new algorithm with the function of closed-loop control via the communication technology. It has the ability of following the changing structure of the tracking system to be protected, and also has the ability of achieve the reconstruction capabilities of the protection functional in the secondary equipment failure. So, it can achieve a high-performance protection.