Research on Method of High Reliability of Crossing Security Zone for Electrical Isolation Devices

The large-scale application of new technologies such as cloud computing in power supply companies makes the mode of traditional power security zones cannot efficiently support the existing business. A simplified interaction protocol of crossing security zones is proposed based on the TCP, which encapsulate the file transfer protocol in the base of isolation devices. It unifies the exchange interface between the production & control zone and the management & information zone, and accord with the transmission modes of request/reply and subscription/publication. Multi-channel data transmission in isolation devices is implemented by multi-thread technology. It established data confirmation mechanism by priority control in crossing security zones. It implemented high reliability of transmission between forward & reverse isolation devices. Finally, it gives process and results of verification through comparing. The method helps to improve the quality of data sharing for application systems crossing different security zones.