CAJ | 학술논문

非同步采样产生的频谱泄露和栅栏效应,严重影响了信号参数的分析精度,无法完成PMU (同步相量测量单元)的校验,因此提出了Nuttall窗插值FFT算法,推导出幅度、相位、频率的修正公式. 通过仿真和实验验证该算法达到很高的计算精度,并且基于高精度数据提出的PMU校验方法有效地实现数据对比分析. 最终根据本算法及校验方法设计出了高精度的PMU校验仪,实现了PMU的高精度校验,确保了电网的安全稳定运行.
비동보채양산생적빈보설로화책란효응,엄중영향료신호삼수적분석정도,무법완성PMU (동보상량측량단원)적교험,인차제출료Nuttall창삽치FFT산법,추도출폭도、상위、빈솔적수정공식. 통과방진화실험험증해산법체도흔고적계산정도,병차기우고정도수거제출적PMU교험방법유효지실현수거대비분석. 최종근거본산법급교험방법설계출료고정도적PMU교험의,실현료PMU적고정도교험,학보료전망적안전은정운행.
Spectral leakage and fence effect, which were caused in asynchronous sampling, influenced the analytical accuracy of signal, and it was hard to verify the PMU, so an interpolation FFT algorithm was proposed, and the for-mulas of magnitude, phase, and frequency of signal were derived.The results got a high accuracy through verification of experiments and simulation, and the verification method of PMU based on high accuracy data efficiently achieved the data comparison and analysis.Finally, according to the algorithm and verification method, high precision calibra-tor of PMU was developed, which achieves the high precision verification of PMU, and it makes the efficient operation of power grid.