Network Migration Strategy of Substation Automation System From IPv4 to IPv6
With the depletion of 32-bit IPv4 addresses,the public Internet is transitioning to 128-bit IPv6.Although the current power communication is not strongly dependent on IPv6 networks,it is still necessary to formulate network migration strategies in advance.This paper describes the necessity of power communication migration from IPv4 to IPv6,and analyzes the impact of IPv6 migration on power communication.Then this paper briefly introduces three transition strategies of IPv6 migration at present:dual-stack device,tunnel technology and conversion technology.At the same time,some IP-based application protocols are introduced,and the correlation between IEC 61850,60870,61400 and other communication protocols and IP addresses is analyzed.Finally,according to different scenarios of substation automation,the network migration strategies from IPv4 to IPv6 are given in each scenario,and the impact of IPv4 to IPv6 migration on typical substation automation application scenarios is analyzed.The network migration strategy proposed in this paper will speed up and promote the deployment and implementation of IPv6 networks in power systems such as substations,control centers,operation and maintenance centers,and provide technical support for building a high-speed,widespread,full-coverage,and intelligent next-generation power communication network.
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