IEC 61970-452:2021定义了在控制中心和/或控制中心组件之间执行状态估计和功率流应用（例如电力系统应用）所必需的来自CIM的类别、类别属性和关联的子集。 北美电力可靠性委员会（NERC）数据交换工作组（DEWG）通用电力系统建模小组（CPSM）制定了原始数据要求，如附录F所示。这些要求基于交换主要用于规划研究的电力系统模型数据的先前行业实践。然而，从本标准的第一版开始，所需数据的列表已经扩展，以促进模型交换，其中包括面向断路器的应用常见的参数。在必要的情况下，本文档建立了约定，如第6条所示，XML数据文件必须遵守这些约定，以便被认为对模型交换有效。附录A描述了本标准旨在支持的数据交换用例。附件B描述了建模机构作为负责给定区域建模的来源的想法。附录C中解释了区域之间边界的概念。附录D解释了多个剖面的处理，例如本标准中描述的三个剖面。附录E中解释了使用不同的曲线样式来定义ReactiveCapabilityCurve-s。 本文档面向两个不同的受众，即数据生产者和数据接收者，可以从两个角度阅读。 从数据生产者使用的模型导出软件的角度来看，本文档描述了CIM类、属性和关联的最小子集，它们必须存在于用于模型交换的XML格式数据文件中。然而，本文档没有规定如何对网络建模。它只规定了使用什么类、属性和关联来描述存在的源模型。 这第四版取消并取代了2017年出版的第三版。本版构成技术修订版。它基于2020年8月24日发布的IEC 61970 UML版本“IEC61970CIM17v40”。 与上一版相比，此版本包括以下重大技术变更: a)将PowerElectronicsConnection、PowerElectronicsUnit和PowerElectronicsWindUnit类别添加到核心设备配置文件中。

IEC 61970-452:2021 defines the subset of classes, class attributes, and associations from the CIM necessary to execute state estimation and power flow applications between control centres and/or control centre components, such as power systems applications.
The North American Electric Reliability Council (NERC) Data Exchange Working Group (DEWG) Common Power System Modelling group (CPSM) produced the original data requirements, which are shown in Annex F. These requirements are based on prior industry practices for exchanging power system model data for use primarily in planning studies. However, the list of required data has been extended starting with the first edition of this standard to facilitate a model exchange that includes parameters common to breaker-oriented applications. Where necessary this document establishes conventions, shown in Clause 6, with which an XML data file must comply in order to be considered valid for exchange of models.
The data exchange use cases which this standard is meant to support are described in Annex A. The idea of a modelling authority as the source responsible for the modeling of a given region is described in Annex B. The concept of a boundary between regions is explained in Annex C. Annex D explains the processing of multiple profiles such as the three profiles described in this standard. The use of different curve styles to define ReactiveCapabilityCurve-s is explained in Annex E.
This document is intended for two distinct audiences, data producers and data recipients, and may be read from two perspectives.
From the standpoint of model export software used by a data producer, this document describes a minimum subset of CIM classes, attributes, and associations which must be present in an XML formatted data file for model exchange. This document does not dictate how the network is modelled, however. It only dictates what classes, attributes, and associations are to be used to describe the source model as it exists.
This fourth edition cancels and replaces the third edition published in 2017. This edition constitutes a technical revision. It is based on the IEC 61970 UML version ‘IEC61970CIM17v40’, dated 2020-08-24.
This edition includes the following significant technical changes with respect to the previous edition:
a) The classes PowerElectronicsConnection, PowerElectronicsUnit and PowerElectronicsWindUnit are added to the Core Equipment profile.