CAJ | 학술논문

基于双矢量dq同步旋转变换，将基波电压正负序分量进行解耦，电网电压进行双αβ和双矢量dq同步旋转变换，旋转变换后得到的分量进行滞后T/4( T为电压周期)调压控制，实现基波电压正序分量快速检测。仿真结果表明，所提出的电压检测方法可实现在电网不对称故障下能快速检测出电压跌落时刻和幅值，基波电压正序分量输出平滑，验证了所提出电压检测方法的有效性。
기우쌍시량dq동보선전변환，장기파전압정부서분량진행해우，전망전압진행쌍αβ화쌍시량dq동보선전변환，선전변환후득도적분량진행체후T/4( T위전압주기)조압공제，실현기파전압정서분량쾌속검측。방진결과표명，소제출적전압검측방법가실현재전망불대칭고장하능쾌속검측출전압질락시각화폭치，기파전압정서분량수출평활，험증료소제출전압검측방법적유효성。
In this paper, the decoupling detection of positive and negative sequence components of the fundamental voltage was achieved based on double vector dq synchronous rotation transformation. The grid voltage were transformed under the system ofαβand dq . The components obtained after rotation transformation were controlled by lag T/4 ( T is the voltage cycle) . The simulation results show that the proposed method can quickly detect the time and amplitude of voltage drop under the unsymmetrical grid fault. The output of positive sequence component of fundamental voltage is smooth, which verifies the proposed method of voltage detection.