IEC 62325-503:2018规定了通信平台标准，欧洲的每个输电系统运营商(TSO)都可以使用该标准为能源市场可靠、安全地交换文档。因此，欧洲市场参与者（TSO、区域监管中心、配电公用事业、电力交易所等。）可以受益于与其他参与者交换消息的单一、通用、协调和安全的平台；因此，降低了构建不同信息技术(IT)平台以与所有相关方接口的成本。本版本取消并取代2014年发布的IEC TS 62325-503。 与上一版相比，此版本包括以下重大技术变更: A）？使用ISO/IEC 19464:2014，高级消息队列协议(AMQP)v1。0规格； b）？将IEC TS 62325-503:2014中描述的节点拆分为实现消息传递功能的代理和目录； c）？通过端点通过几个代理发送和接收消息的能力来增加通信系统的可操作性和弹性； d）？用于传输消息的AMQP协议的标准化、性能和可扩展性的好处。

IEC 62325-503:2018 specifies a standard for a communication platform which every Transmission System Operator (TSO) in Europe can use to exchange reliably and securely documents for the energy market. Consequently a European market participant (TSO, regional supervision centre, distribution utility, power exchange, etc.) could benefit from a single, common, harmonised and secure platform for message exchange with other participants; thus, reducing the cost of building different information technology (IT) platforms to interface with all the parties involved. This edition cancels and replaces IEC TS 62325-503 published in 2014.
This edition includes the following significant technical changes with respect to the previous edition:
a)？Use of ISO/IEC 19464:2014, Advanced Message Queuing Protocol (AMQP) v1.0 specification;
b)？Splitting of the node described in the IEC TS 62325-503:2014 into a broker that implements the messaging function and a directory;
c)？Increase of operability and resilience of the communication system with the ability for an endpoint to send and receive messages through several brokers;
d)？Benefits of standardisation, performance and scalability of the AMQP protocol for transferring messages.