Hing Bridge Substation Automation Applications

The integrated substation automation is the important constituent of distributing net automation system,and is the important guarantee of improving the reliability of power supply. This paper discusses the configuration, function and structure of the integrated substation automation. According to the actual situation, the implementary scheme of the Qing Yun Qiao 110kV substation in the urban district of Xu Zhou was designed, it adopts the hierarchical and distributed system structure. This paper deeply researches the important constituents of the integrated automation, such as the micro-computer protection of transformer, the fault line detection of small current grounding system and the communication of the system. The detailed works are involved in following aspect:i) In the aspect of the micro-computer protection of transformer, it mainly researches the hardware construction and the protection algorithm.ii) It deeply probes into the fault line detection of small current grounding system and the communication of the system, presents a new kind of fault line detection based on the energy of transient high frequency components of the zero sequence current.iii) The communication of the integrated automation of Qing Yun Qiao substation is analyzed, and the technical criterions of CAN bus is introduced.iv) According to the actual situation, this paper designs the the implementary scheme of the Qing Yun Qiao substation in the urban district of Xu Zhou.The researching production of this paper has the theoretic guide significance to the Qing Yun Qiao 11 OkV integrated substation automation in the urban district of Xu Zhou.