IEC 60255-181:20 19规定了频率保护功能和性能评估的最低要求。本文档还定义了如何记录和发布性能测试结果。 本文档涵盖了基于频率测量或频率测量变化率的功能。本文件还涵盖了使用附加阻断元件的频率保护。 本文定义了稳态条件下影响精度的影响因素和动态条件下的性能特征。用于验证性能特征和准确性的测试方法也包括在本文件中。

IEC 60255-181:2019 specifies the minimum requirements for functional and performance evaluation of frequency protection. This document also defines how to document and publish performance test results.
This document covers the functions based on frequency measurement or rate of change of frequency measurements. This document also covers frequency protection where additional blocking elements are used.
This document defines the influencing factors that affect the accuracy under steady state conditions and performance characteristics during dynamic conditions. The test methodologies for verifying performance characteristics and accuracy are also included in this document.