The Secondary Circuit Intelligent Substation Based On IEC61850 Security Isolation Measures

As intelligent substation large-scale construction and application of new technology,Operation and maintenance personnel for smart substation to master the new technology needs to be improved,and hard to master the principle of secondary loop grasp that based on IEC61850 standard.Intelligent substation reconstruction projects within many at present stage,At the same time,some early intelligent substation is gradually transformed,because the device quality,operating life,design quality and other reasons,the shall ensure that equipment and repair equipment in good isolation,and frequent in the field work in recent years due to the Operation and maintenance personnel protection misoperation caused by improper operation,from accidents,a variety of lessons,cause our thinking,has prompted for smart substation secondary loop isolation technique measures for further research.This paper takes jiangxi power grid substation 500 kv Ma Huiling total 105 sets of merging unit,the alteration project of intelligent terminal as an example,the secondary circuit isolation requirements are put forward.For a better understanding of intelligent substation chicago-brewed GOOSE circuit related theory,first proposed the IEC61850 data information model,analyzes the transmission mechanism,the chicago-brewed GOOSE messages chicago-brewed GOOSE loop meaning,chicago-brewed GOOSE virtual terminal,chicago-brewed GOOSE send soft clamp and other data model and principle,on the basis of analyzing the different chicago-brewed GOOSE circuit isolation technique measures the advantages and disadvantages,and the two isolation measures of SV sampling circuit also has carried on the induction,the principle of intelligent substation secondary equipment cast back is obtained and the matters needing attention.Finally in 500 kv substation Ma Huiling transform example,put forward a kind of intelligent substation isolation measures selection,combined with principles of cast out conclusion before,has been clear about the specific content of safety measures,through a series of security measures at the same time,ensure the project smooth implementation.This article research has the very good model role,for the future of all kinds of intelligent substation project provides a theoretical guidance and technical basis.