Research on design and implementation of relay protection in smart grid

Power technology is developing rapidly, the community for the power quality requirements are more stringent, smart grid technology continues to apply and gradually mature. But in the power supply and distribution system, the power supply capacity cannot meet the needs of the community for electricity, and there are insecurity grid factors. Relay protection technology as a smart grid in a critical technology, its development and application should be of concern. Electric power system reliability of the relay protection, security requirements become more stringent. According to the basic characteristics of smart grid, as well as the traditional relay protection tuning technology, this paper expounds the important significance of relay protection in smart grid environment, a brief analysis of the smart grid system, and then analyses the technology of relay protection in smart grid environment, finally, the concept of wide area protection function and system structure are discussed, and the analysis of the principle and characteristics of the main algorithm of wide area protection.