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随着科技进步和信息技术的迅猛发展,电网供电质量越来越受到人们的重视。在电压凹陷、电压波动和闪变、谐波、三相不平衡、频率偏移等电能质量问题中,电压凹陷是危害较严重的动态电能质量问题。晶闸管分级电压调节器(TVR)是进行电压凹陷的动态补偿的有效装置。本文在深入研究瞬时无功功率理论和基于该理论的检测方法后,采用了基于d-q变换算法的晶闸管电压调节器电压快速检测方法;并在Matlab仿真平台上搭建了TVR的电压凹陷检测算法仿真模型,仿真结果验证了基于d-q变换算法的电压检测方法能够很好的满足TVR的动态电压检测要求。
With the progress of science and technology and the rapid development of information technology, the power supply quality of power grid is getting more and more attention. In the power quality problems such as voltage sag, voltage fluctuation and flicker, harmonics, three-phase imbalance and frequency offset, voltage sag is a more serious problem of dynamic power quality. Thyristor-stage voltage regulator (TVR) is an effective device for dynamic compensation of voltage sags. In this paper, in-depth study of instantaneous reactive power theory and detection methods based on the theory, the dq transform algorithm based on the thyristor voltage regulator voltage rapid detection method; and built on the Matlab simulation platform TVR voltage sag detection algorithm simulation model The simulation results verify that the voltage detection method based on the dq transform algorithm can well meet the TVR dynamic voltage detection requirements.