广东电网有限责任公司科技项目资助（项目编号： 032000KK52180063 ）
1.Guangdong Power Grid Co., Ltd. Zhongshan Power Supply Bureau;2.Guangdong Electric Power Research Institute Energy Technology Co., Ltd.;3.Nanhua University
智能电网的发展需要为变电站提供多种通信协议映射方法，且对通信性能提出更高要求。目前大多数变电站的通信是基于IEC 61850标准,变电站通信直接转为轻量级协议较为困难。本文提出了一种多规约的通信映射方法，结合简明二进制对象表示(CBOR)格式，将IEC 61850映射到受限应用程序协议(CoAP)。与现有的如WS-SOAP和HTTP映射方案相比，CoAP+CBOR只需要44%和18%的信息大小，71%和85%的通信时间，这缓解了电网中设备和网络资源受限的问题。此外，CoAP具有基于具象状态传输(REST)体系结构，它通过统一的标识和交互支持系统集成，具备互操作性。这种方法促进了传统平台与智能变电站以及电网自动化系统等通信兼容和集成。
The development of smart grid needs to provide a variety of communication protocol mapping methods for substation, and put forward higher requirements for communication performance. At present, most substation communication is based on IEC 61850 standard, so it is difficult to convert substation communication directly to lightweight protocol. In this paper, a multi protocol communication mapping method is proposed, which combines the concise binary object representation (CBOR) format to map IEC 61850 to constrained application protocol (COAP). Compared with the existing mapping schemes such as ws-soap and HTTP, COAP + CBOR only needs 44% and 18% of the information size and 71% and 85% of the communication time, which alleviates the problem of limited equipment and network resources in power grid. In addition, COAP has a REST based architecture, which supports system integration through unified identification and interaction, and has interoperability. This method promotes the communication compatibility and integration of traditional platform with Smart Substation and power grid automation system.