CAJ | 학술논문

针对多功能电能表电快速瞬变脉冲群抗扰度（ EFT／B）试验产生的问题，通过对瞬变脉冲群产生的机理及其特点分析，提出基于软硬件技术的电快速瞬变脉冲群干扰综合抑制方法，应用纵向扼流圈、优化电源滤波器等方式改进电源回路抗干扰能力；通过降低元器件寄生电容，增加专用隔离芯片，优化PCB板布局等措施来提高输入输出端和通讯端的抗干扰能力；同时应用递推式防脉冲平均值数字滤波法，来增强其软件部分稳定性和容错能力。实验结果表明，采取综合抑制措施后，多功能电能表电快速瞬变脉冲群抗干扰能力得到显著提高。
침대다공능전능표전쾌속순변맥충군항우도（ EFT／B）시험산생적문제，통과대순변맥충군산생적궤리급기특점분석，제출기우연경건기술적전쾌속순변맥충군간우종합억제방법，응용종향액류권、우화전원려파기등방식개진전원회로항간우능력；통과강저원기건기생전용，증가전용격리심편，우화PCB판포국등조시래제고수입수출단화통신단적항간우능력；동시응용체추식방맥충평균치수자려파법，래증강기연건부분은정성화용착능력。실험결과표명，채취종합억제조시후，다공능전능표전쾌속순변맥충군항간우능력득도현저제고。
Aiming at electrical fast transient bursts ( EFT/B) immunity test problems of the multi-function energy me-ter, a comprehensive method of EFT/B interference suppression was proposed based on hardware and software im-provement .The anti-interference ability of power supply circuit was improved by using longitudinal chokes and optimi -zing the power filter design .For some auxiliary circuits , such as the input , output and communication terminals , the anti-interference abilities were improved by reducing components parasitic capacitance , increasing dedicated isolation chip, and optimizing PCB layout .Meanwhile, the recursive digital filter algorithms were applied to enhance stability and fault tolerance capability of the software .The experiments for a multi-function electricity meter of EFT/B were made after adopting comprehensive suppression measures , and the results show the obvious improvement of the pro-posed methods .