ISO 18888:2017规定了燃气轮机驱动的联合循环和热电联产发电厂热性能试验的准备、实施、评估和报告的标准规则，用于在有或无补充燃烧的基础和部分负荷运行。 ISO 18888:2017适用于 -一般信息的热性能测试， -热验收试验，用于确定与合同保证有关的联合循环电厂的性能，以及 -用于检查联合循环和热电联产发电厂性能差异的对比试验，用于在改造、升级或大修前后进行试验。 在规定的测试边界内的特定操作和参考条件下，它可用于确定以下热性能测试目标和预期值: -电功率输出； -热耗率或热效率； -工艺蒸汽和/或区域供热，不通过汽轮机产生电力输出。 ISO 18888:2017不适用于相应标准涵盖的单个设备组件测试。 本标准不适用于以下测试目标: -环境测试，例如排放、噪音； -振动测试； -操作测试； -专用标准（如燃气轮机）涵盖的联合循环特定部件的绝对或比较性能。

ISO 18888:2017 specifies standard rules for preparing, conducting, evaluating and reporting thermal performance tests on combined cycle and cogeneration power plants driven by gas turbines for base and part load operation with or without supplementary firing. ISO 18888:2017 is applicable to - thermal performance tests for general information, - thermal acceptance tests for determining the performance of the combined cycle plant in relation to a contractual guarantee, and - comparative tests designed to check the performance differentials of the combined cycle and cogeneration power plants, for testing before and after modifications, upgrades or overhauls. It can be used to determine the following thermal performance test goals and expected values, under specific operating and reference conditions within defined test boundaries: - electrical power output; - heat rate or thermal efficiency; - process steam and/or district heat w/o generation of electrical power output by means of a steam turbine. ISO 18888:2017 does not apply to individual equipment component testing, which is covered by corresponding standards. It is not intended to be applied to the following test goals: - environmental testing for example emissions, noise; - vibration testing; - operational testing; - absolute or comparative performance of specific components of the combined cycle covered by dedicated standards (e.g. gas turbines).