適用于智能電網(wǎng)電能質(zhì)量檢測的雙積分型電子式電壓互感器
發(fā)布時間:2018-09-11 09:24
【摘要】:現(xiàn)有的電壓互感器難以滿足智能電網(wǎng)對電能質(zhì)量寬頻域、高精度檢測的要求,文中提出一種基于雙積分器的電子式電壓互感器(EVT)實現(xiàn)方案,利用主積分器和輔助積分器配合工作,使EVT同時兼顧寬頻帶特性和良好的暫態(tài)響應性能。闡述了雙積分型EVT的工作原理,分析了主積分器和輔助積分器的頻率響應特性及暫態(tài)特性,并進行了雙積分型EVT的諧波及暫態(tài)擾動檢測仿真分析和樣機試驗驗證。結(jié)果表明雙積分型EVT可滿足60次以下諧波電壓高精度檢測的要求,對暫態(tài)擾動信號具有良好的傳變性能,符合智能電網(wǎng)電能質(zhì)量檢測的需要。
[Abstract]:The existing voltage transformer is difficult to meet the demand of smart grid for wide frequency domain and high precision detection of power quality. In this paper, a (EVT) implementation scheme of electronic voltage transformer based on dual integrator is proposed. The main integrator and the auxiliary integrator are used to work together to make the EVT take into account the wide band characteristic and the good transient response performance at the same time. This paper describes the working principle of dual integral EVT, analyzes the frequency response characteristics and transient characteristics of main integrator and auxiliary integrator, and carries out the harmonic and transient disturbance detection simulation analysis and prototype test of dual integral type EVT. The results show that the dual-integral EVT can meet the requirements of high-precision detection of the harmonic voltage below 60 times, and has good transmission performance for transient disturbance signals, and meets the needs of smart grid power quality detection.
【作者單位】: 湖南大學電氣與信息工程學院;
【基金】:湖南省科技計劃資助項目(2015WK3002)~~
【分類號】:TM451
[Abstract]:The existing voltage transformer is difficult to meet the demand of smart grid for wide frequency domain and high precision detection of power quality. In this paper, a (EVT) implementation scheme of electronic voltage transformer based on dual integrator is proposed. The main integrator and the auxiliary integrator are used to work together to make the EVT take into account the wide band characteristic and the good transient response performance at the same time. This paper describes the working principle of dual integral EVT, analyzes the frequency response characteristics and transient characteristics of main integrator and auxiliary integrator, and carries out the harmonic and transient disturbance detection simulation analysis and prototype test of dual integral type EVT. The results show that the dual-integral EVT can meet the requirements of high-precision detection of the harmonic voltage below 60 times, and has good transmission performance for transient disturbance signals, and meets the needs of smart grid power quality detection.
【作者單位】: 湖南大學電氣與信息工程學院;
【基金】:湖南省科技計劃資助項目(2015WK3002)~~
【分類號】:TM451
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