【摘要】 提出了一种基于DSP芯片TMS320F240的新型电网监控系统,该系统能同时完成对三相电压和三相电流的检测,消除了电压和电流相位差的测量误差;给出了相关监控的基本原理和设计思路,并对该系统的硬件结构和软件设计中的关键部分进行了讨论.插值FFT算法的引入使该系统的测量精度进一步提高.实际应用表明,该系统能较好地完成对电网的监控.更多还原

【Abstract】 Harmonics and interharmonics have serious impacts on power system,therefore,it is important to measure parameters of power system accurately.A new type of power network monitoring system based on TMS320F240 DSP is introduced.The system can simultaneously measure three-phase voltage and three-phase current.Therefore,it reduces the phase computing between voltage and current.The paper analyses the monitoring and control principle.In addition,hardware and software designs for this device are presented.Interpolation FFT algorithm improve the accuracy of measurement.The use of this protector has achieved a good goal.更多还原