微电网第3-1部分:技术要求保护和动态控制

[中文适用范围]： 此部分IEC 62898的目的是为微电网中的故障保护和动态控制规范提供指导。微电网中的保护和动态控制旨在确保微电网在故障和扰动条件下安全稳定运行。本文件适用于包含单相或三相网络或两者的交流微电网。包括孤立的微电网和通过单个连接点（POC）连接到上游配电网络的非孤立微电网。本文件不适用于与上游配电网络有两个或更多连接点的微电网，尽管此类系统可以参考本文件中给出的指导原则。本文件适用于在低压（LV）或中压（MV）或两者下运行的微电网。由于直流系统的特殊特性（极大的故障电流和自然电流过零点的缺失），直流和混合交流/直流微电网不包括在范围内。本文件定义了微电网保护和动态控制的原则、一般技术要求以及故障保护和动态控制的具体技术要求。它解决了微电网保护要求、瞬态扰动控制和动态扰动控制要求的新挑战。它关注传统电力系统保护与微电网保护功能新可能解决方案之间的差异。根据具体情况，微电网运营商可与配电系统运营商（DSO）协调，定义额外或更严格的要求。本文件不包括有源配电系统的保护和动态控制。本文件不包括测量继电器和保护设备的产品的要求。本文件不包括低压电气装置的安全方面，这些方面由IEC 60364（所有部分及与低压电气装置相关的修正案）涵盖。低压微电网的相关要求可在IEC 60364-8-2中找到。 [外文原描述]： IEC TS 62898-3-1:2020(E) provides guidelines for the specification of fault protection and dynamic control in microgrids. Protection and dynamic control in a microgrid are intended to ensure safe and stable operation of the microgrid under fault and disturbance conditions. This document applies to AC microgrids comprising single or three-phase networks or both. It includes both isolated microgrids and non-isolated microgrids with a single point of connection (POC) to the upstream distribution network. It does not apply to microgrids with two or more points of connection to the upstream distribution network, although such systems can follow the guidelines given in this document. This document applies to microgrids operating at LV or MV or both. DC and hybrid AC/DC microgrids are excluded from the scope, due to the particular characteristics of DC systems (extremely large fault currents and the absence of naturally occurring current zero crossings). This document defines the principles of protection and dynamic control for microgrids, general technical requirements, and specific technical requirements of fault protection and dynamic control. It addresses new challenges in microgrid protection requirements, transient disturbance control and dynamic disturbance control requirements for microgrids. It focuses on the differences between conventional power system protection and new possible solutions for microgrid protection functions. Depending on specific situations, additional or stricter requirements can be defined by the microgrid operator in coordination with the distribution system operator (DSO). This document does not cover protection and dynamic control of active distribution systems. This document does not cover product requirements for measuring relays and protection equipment. This document does not cover safety aspects in low voltage electrical installations, which are covered by IEC 60364 (all parts and amendments related to low-voltage electrical installations). Requirements relating to low voltage microgrids can be found in IEC 60364-8-2.