本标准规定了电站分布式控制系统（DCS）运行维护、维修和测试的技术和管理要求。 本标准适用于常规火力发电厂开始商业运行后的DCS运行维护、维修和试验。 IEEE Std 1865（TM）规定了适用于IEEE 1865系列中所有标准的一般要求。 IEEE Std 1865.1（TM）和IEEE Std 1865.2（TM）专注于更具体的主题。 IEEE Std 1865.1提供了DCS维修和测试的详细要求，包括项目、方法和程序。 IEEE标准1865。 2提供了DCS运行维护和管理的详细要求，包括项目、方法和程序。

This standard specifies the technical and managerial requirements for operational maintenance, repair, and tests of distributed control systems (DCSs) in power stations. This standard is applicable to the operational maintenance, repair, and tests of DCSs in conventional thermal power stations after commencement of commercial operation. IEEE Std 1865(TM) specifies the general requirements applicable to all standards in the IEEE 1865 series. IEEE Std 1865.1(TM) and IEEE Std 1865.2(TM) concentrate on more specific topics. IEEE Std 1865.1 provides detailed requirements for the repair and test of DCSs, including items, methods, and procedures. IEEE Std 1865.2 provides detailed requirements for the operational maintenance and management of DCSs, including items, methods, and procedures.