能源管理系统应用程序接口（EMS-API）.第456部分:已解决的电力系统状态概要

[中文适用范围]： 本部分属于IEC 61970-450至IEC 61970-499系列，整体上定义了用于电力系统分析应用、控制中心和/或控制中心组件之间传输数据的内容和交换机制的抽象级别。 本文档的目的是严格定义CIM中必要的类、类属性和角色子集，以描述状态估计、潮流和其他类似应用的结果，这些应用在本文档中包含的一组用例下产生电力网络的稳态解。 本文档面向两个不同的受众，数据生产者和数据接收者，可以从这两个角度阅读。从数据生产者使用的模型导出软件的角度来看，文档定义了生产者如何描述网络案例的实例，以便使其可供其他程序使用。从消费者的角度来看，文档定义了导入软件必须能够解释的内容，以便使用潮流案例。 本文档预计有许多不同的用例，它们在文档如何应用于每种情况上有所不同。实施者应考虑他们希望覆盖的用例，以了解他们必须覆盖的不同选项的范围。例如，本文档中定义的配置文件在某些情况下用于交换起始条件而不是解决条件，因此如果这是一个重要的用例，这意味着消费者应用程序需要能够处理未解决的状态以及满足某些解决方案标准的状态。 [外文原描述]： IEC 61970-456:2021 belongs to the IEC 61970-450 to IEC 61970-499 series that, taken as a whole, defines at an abstract level the content and exchange mechanisms used for data transmitted between power system analyses applications, control centres and/or control centre components. The purpose of this document is to rigorously define the subset of classes, class attributes, and roles from the CIM necessary to describe the result of state estimation, power flow and other similar applications that produce a steady-state solution of a power network, under a set of use cases which are included informatively in this document. This document is intended for two distinct audiences, data producers and data recipients, and can be read from those two perspectives. From the standpoint of model export software used by a data producer, the document defines how a producer may describe an instance of a network case in order to make it available to some other program. From the standpoint of a consumer, the document defines what that importing software must be able to interpret in order to consume power flow cases. There are many different use cases for which use of this document is expected and they differ in the way that the document will be applied in each case. Implementers are expected to consider what use cases they wish to cover in order to know the extent of different options they must cover. As an example, the profiles defined in this document will be used in some cases to exchange starting conditions rather than solved conditions, so if this is an important use case, it means that a consumer application needs to be able to handle an unsolved state as well as one which has met some solution criteria. This third edition cancels and replaces the second edition published in 2018. 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) Updated to support CIM17 (IEC 61970-301:2020+AMD1) and align with IEC 61970‑452:ED4. b) The classes PowerElectronicsConnection, PowerElectronicsUnit and PowerElectronicsWindUnit are added to the Steady State Hypothesis (SSH) profile to match the changes done for Edition 4 of IEC 61970-452 , Core Equipment profile. c) Added relevant terms used in this document. d) Clarified use of Equipment.inService and Equipment.normallyInService.