Protection devices as the main substation secondary equipment

Digital substation substation automation in China will run and manage far-reaching consequences and enormous change, our smart grid construction is an important part in the economic and technical aspects are of great significance. Protection devices as the main substation secondary equipment, its function and performance  mcb circuit breaker  concern, with digital electronic transformer substations and network communications using the secondary circuit, in particular with respect to electronic   air circuit breaker   electromagnetic transformers many advantages, is bound to bring rapid development of relay technology. However, the digital substation electronic transformer secondary circuit and network communication uses a new technology is still in its initial application, its own characteristics and stability of the protective device is not very clear, so it is necessary to conduct in-depth research. Tianjin Electric Power Company implemented CHEN Fu-220kV digital substation project, the use of electronic transformers and intelligent switching technology, the station uses a secondary network equipment and communications secondary circuit, and apply IEC61850 standards.