IEC 61869-14:2018 仪表变压器第14部分:直流应用电流互感器的附加要求

标准编号：IEC 61869-14:2018

中文名称：仪表变压器第14部分:直流应用电流互感器的附加要求

英文名称：Instrument transformers - Part 14: Additional requirements for current transformers for DC applications

发布日期：2018-07-17

标准范围

IEC 61869-14:20 18提供了直流应用(DCCT)中使用的电流互感器的所有特定要求，无论使用何种技术。输出信号可以是模拟的或数字的。适用于额定电压在1.5 kV以上的直流电力系统中用于测量、保护和/或控制应用的新制造的电流互感器。IEC 61869-6:20 16的图601描述了单极小功率仪表变压器的一般配置。用于VSC阀的晶体管支路中的电流测量的DCCT（在图1403和表1402中称为CT4a和CT4b）不在本文档中，将在未来版本中考虑。IEC 61869-14:20 18适用于预期用于直流应用的电流互感器，具有以下至少一种功能:？测量直流电流（有显著谐波）；？承受直流电压。根据在DC系统上的位置，存在不同类型的应用，下面简要描述这些应用以及近似的电压或电流波形。

IEC 61869-14:2018 provides all requirements specific to current transformers to be used in DC applications (DCCTs), whatever the technology used. The output signal can be analogue or digital.
It is applicable to newly manufactured current transformers used for measuring, protection and/or control applications in DC power systems with a rated voltage above 1,5 kV.
The general configuration of a single-pole low-power instrument transformer is described in Figure 601 of IEC 61869-6:2016.
The DCCTs intended for current measurement in the transistor branch of the VSC valve (referred to as CT4a and CT4b in Figure 1403 and Table 1402) are not covered by this document, and will be considered in a future revision.
IEC 61869-14:2018 applies to current transformers intended to be used in DC applications with at least one of the following functions:
？measure DC current (with significant harmonics);
？withstand DC voltage.
Depending on the position on the DC system, different kinds of application exist, which are briefly described below, together with the approximate voltage or current wave shape.

标准预览图