IEC TR 62351-90-3:20 21是一份技术报告，为有效处理IT和OT数据的监控、分类和相关性提供了指南，以推断有关电力系统状态的任何可能的有用结果。 信息技术（IT）和运营技术（OT）的融合是指与IT和OT领域相关的系统、流程和数据的集成。本文件为基于IT/OT融合系统的电网组件的全面安全监控提供了指南。重点是为公用事业运营商开发一种方法和一套建议，以基于对通过网络管理、流量检查和系统活动读数从不同IT和OT系统收集的数据的分析来构建一个通用监控框架。因此，本文档介绍的监控框架依赖于分别使用IEC 62351-7和IEC 62351-14获得的管理和日志信息的集成。将考虑来自IT和OT的其他系统和数据源，诸如例如通过使用简单网络管理协议(SNMP)的IT网络管理、被动网络监控以及控制和自动化过程的功能表征获得的数据。 本文件的建议包括实施数据收集、过滤和关联机制。数据分析算法的开发超出了本文档的范围，将留给公用事业运营商和所有者。最后，提供了通用监控框架指南和建议在不同电网环境中的应用，即IEC 61850变电站和分布式能源（DER）系统。

IEC TR 62351-90-3:2021, which is a technical report, provides guidelines for efficiently handling both IT and OT data in terms of their monitoring, classification and correlations on them to deduce any possible useful outcomes about the state of the power system.
The convergence of information technologies (IT) and operational technologies (OT) refers to the integration of the systems, processes and data associated with the domains of IT and OT. This document provides guidelines for a comprehensive security monitoring for power grid components based on IT/OT convergent systems. The emphasis is about the development of a methodology and a set of recommendations for utility operators to build a general monitoring framework based on the analysis of the data collected from different IT and OT systems through network management, traffic inspection, and system activity readings. As such, the monitoring framework that this document introduces relies on the integration of management and logging information obtained using IEC 62351-7 and IEC 62351-14, respectively. Further systems and data sources from IT and OT would be considered such as the data obtained, for instance, through the IT network management using the Simple Network Management Protocol (SNMP), the passive network monitoring, and the functional characterization of control and automation processes.
This document's recommendations include the implementation of data collection, filtering and correlation mechanisms. The development of data analytics algorithms is out of the scope of this document and would be left to utility operators and owners. Finally, applications of the general monitoring framework guidelines and recommendations are provided for different power grid environments, namely for IEC 61850 substations and for Distributed Energy Resources (DER) systems.