| 摘要: |
| 数字化变电站GOOSE、采样值传输对变电站网络传输性能提出了更高的要求。传统共享式的组播传输方式会造成网络冲突加剧，终端设备组播误收增加，已经不能满足数字化网络传输的工程化要求。对支持IEEE802.1Q的虚拟局域网（VLAN）划分技术、组播注册协议（GMRP）组网技术进行了探讨，指出支持IEEE802.1Q的VLAN划分技术通过隔离广播域的方法和GMRP通过动态组播注册技术都能从理论上解决数字化变电站存在的组播流量问题。相比支持IEEE802.1Q的VLAN划分技术，GMRP具有工程实施维护简单、流量控制精确等优点，在工程化方面具有一定的优势。 |
| 关键词: 数字化变电站 通信 GMRP VLAN 变电站 |
| DOI： |
| 分类号: |
| 基金项目: |
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| Ｄigital substation networking technologies |
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LI Guanghua
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Nanjing NARI-Relays Electric Co.，Ltd.，Nanjing 211102，China
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| Abstract: |
| The extensive application of GOOSE and sample data transmission in digital substations requires the high performance of communication networks. Traditional shared multicast communication mode is not suitable for digital substations because it may aggravate the network conflict and increase the receiving error. VLAN partition technology supporting IEEE802.1Q and GMRP networking technology are discussed and it is pointed out that both，the former together with the isolated broadcast domain method and the latter with the dynamic multicast registered technology，can be used in theory to avoid the overloaded multicast flow of digital substation transmission，while the latter is better because of its simple project implementation & maintenance and precise flow control. |
| Key words: digital substation communication GMRP VLAN electric substations |
