新型电力系统下电流互感器抗直流性能和测量范围优化设计研究

翟晓卉; 孙凯; 代燕杰; 董贤光; 邢宇

翟晓卉,孙凯,代燕杰,董贤光,邢宇.新型电力系统下电流互感器抗直流性能和测量范围优化设计研究[J].电测与仪表,2026,63(5):175-183.
ZHAI Xiaohui,SUN Kai,DAI Yanjie,DONG Xianguang,XING Yu.Research on anti-DC performance and measurement range optimization design of current transformer in novel power system[J].Electrical Measurement & Instrumentation,2026,63(5):175-183.

新型电力系统下电流互感器抗直流性能和测量范围优化设计研究

Research on anti-DC performance and measurement range optimization design of current transformer in novel power system

DOI：10.19753/j.issn1001-1390.2026.05.018

中文关键词: 电流互感器新型电力系统计量误差宽量程

英文关键词:current transformer, novel power system, metering, error, wide range

基金项目:国网山东省电力公司科技项目资助，项目名称:适用于新型电力系统的电流互感器自适应计量技术研究及应用（52063324000B）

作者中文名	作者英文名	单位
翟晓卉	ZHAI Xiaohui	国网山东省电力公司营销服务中心（计量中心）
孙凯	SUN Kai	国网山东省电力公司营销服务中心（计量中心）
代燕杰	DAI Yanjie	国网山东省电力公司营销服务中心（计量中心）
董贤光	DONG Xianguang	国网山东省电力公司营销服务中心（计量中心）
邢宇	XING Yu	国网山东省电力公司营销服务中心（计量中心）

摘要点击次数: 648

中文摘要:

为应对新型电力系统在高比例新能源并网条件下电流互感器计量范围受限、直流偏磁导致误差增大的问题，开展了宽量程、抗直流偏磁电流互感器的关键技术研究。研究以电磁式电流互感器为对象，通过理论分析直流分量对铁心磁化特性及计量误差的影响机理，提出一种由硅钢片与纳米晶复合而成的多微气隙磁心结构，并基于气隙比对剩磁、饱和、磁导率和非线性的定量关系确定四个0.02 mm微气隙；利用ANSYS Maxwell对磁通分布进行仿真，验证其在10%直流分量扰动下的稳定性；据此研制HL(D)-500/5样机，并按0.2SS/2级准确度要求完成0.1%~200%额定电流范围内的工频误差测试及叠加10%直流分量的误差测试。结果表明，所提出的复合多微气隙方案使互感器在工频条件下全量程比差≤0.061%、角差≤4.3′，满足0.2 SS级；在直流扰动工况下仍保持0.2级准确度，显著优于传统结构。所设计实现了宽动态范围与抗直流偏磁的协同优化，为新型电力系统提供了高精度、高可靠的电流计量技术支撑。

英文摘要:

In order to cope with the novel power system in a high proportion of new energy grid-connected conditions of current transformer metering range is limited, DC bias magnetization caused by the increase in error, this paper carries out a wide-range, anti-DC bias current transformer key technology research. The research takes the electromagnetic current transformer as the object, through the theoretical analysis of the DC component on the magnetization characteristics of the iron core and the measurement error of the influence mechanism, puts forward a kind of multi-micro air-gap magnetic core structure made of silicon steel sheet and nanocrystalline composite, and based on the air-gap ratio on the remanent magnetism, saturation, permeability and non-linear quantitative relationship to determine the four 0.02 mm micro-air-gap; the flux distribution is simulated using ANSYS Maxwell to verify its stability under 10% DC component perturbation; accordingly, the HL (D)-500/5 prototype is developed, and the IF error test in the range of 0.1%~200% of the rated current and the error test of superimposed 10% DC component are completed in accordance with the accuracy requirement of 0.2SS/2 level. The results show that the proposed composite multi-micro air-gap scheme enables the transformer to satisfy the 0.2SS level with the full-range ratio difference of ≤0.061% and the angular difference of ≤4.3′ under the IF condition; and still maintains the 0.2 level accuracy under the DC disturbance condition, which is significantly superior than that of the traditional structure. The proposed design achieves synergistic optimization of wide dynamic range and DC bias rejection, providing high-precision and highly reliable current measurement technology to support novel power system.

查看全文查看/发表评论下载PDF阅读器

关闭