电流和电压传感器或检测器 用于故障通道指示用途第2部分:系统方面

[中文适用范围]： IEC 62689的这一部分根据最广泛分布的配电系统架构和故障类型描述了故障@期间的电气现象和电力系统行为，以定义故障通道指示器（FPI）和配电变电站单元（DSU）（包括它们的电流和/或电压传感器）@分别是能够检测故障并提供有关其定位的指示的设备或设备/设备和/或功能的组合。故障定位是指相对于网络上的FPI/DSU安装点的故障位置（FPI/DSU位置的上游或下游）或流过FPI本身的故障电流的方向。可以得到故障定位吗？直接来自 FPI/DSU@ 或？来自中央系统，使用来自更多 FPI 或 DSU 的信息@，考虑安装 FPI/DSU 的电力系统的功能和运行条件。因此，IEC 62689 的这一部分旨在帮助用户适当选择在其网络中正确运行的 FPI/DSU（或基于 FPI/DSU 信息的系统）@，考虑采用的解决方案和操作规则（由传统和/或定义）取决于国家监管机构定义的有关电压供应的连续性和质量的可能限制）@并且还考虑设备的复杂性和随之而来的成本。 IEC 62689的这一部分主要关注故障@期间的系统行为，这是“核心” IEC 62689-1@ 中描述的 FPI/DSU 故障检测能力类别，其中详细规定了所有要求。 [外文原描述]： IEC 62689-2:2016 describes electric phenomena and electric system behaviour during faults, according to the most widely diffused distribution system architecture and to fault typologies, to define the functional requirements for fault passage indicators (FPI) and distribution substation units (DSU) (including their current and/or voltage sensors), which are, respectively, a device or a device/combination of devices and/or of functions able to detect faults and provide indications about their localization. By localization of the fault is meant the fault position with respect to the FPI/DSU installation point on the network (upstream or downstream from the FPI/DSU's location) or the direction of the fault current flowing through the FPI itself. The fault localization may be obtained - directly from the FPI/DSU, or - from a central system using information from more FPIs or DSUs, considering the features and the operating conditions of the electric system where the FPIs/DSUs are installed. This part of IEC 62689 is therefore aimed at helping users in the appropriate choice of FPIs/DSUs (or of a system based on FPI/DSU information) properly operating in their networks, considering adopted solutions and operation rules (defined by tradition and/or depending on possible constraints concerning continuity and quality of voltage supply defined by a national regulator), and also taking into account complexity of the apparatus and consequent cost. This part of IEC 62689 is mainly focused on system behaviour during faults, which is the "core" of FPI/DSU fault detection capability classes described in IEC 62689-1, where all requirements are specified in detail.