摘要
关于检测低压配电系统的研究,以瞬时无功功率理论为基础,针对不对称的三相四线制系统谐波电流检测,提出改进的p-q法,在求解瞬时功率时未使用clarke变换,而是使用有功功率矢量法来求解谐波电流。通过matlab仿真将改进的谐波电流检测方法与传统的p-q法进行仿真,验证了方法能够有效的检测出不对称的三相四线制系统中的谐波电流。仿真结果表明改进方法的检测效果在检测速度和精度方面均有明显的提高。
Based on instantaneous reactive power theory, this paper presented an improved p - q method of the harmonic current detection for asymmetric three - phase four - wire system. This method replaces Clarke transform to solve the instantaneous with active power vector method to solve the harmonic current. Compared with a conventional p-q method, the improved harmonic current detection method through the matlab simulation was verified that can detect the harmonic current in asymmetry three - phase four - wire system effectively. The simulation results show that the effects of the improved detection method are obviously improved in speed and precision. This system proposes to use the AVR SCM for data processing to achieve the harmonic current detection .
出处
《计算机仿真》
CSCD
北大核心
2012年第12期345-348,共4页
Computer Simulation
基金
江西省测控中心企业预研项目(zx200928002)
关键词
三相四线制
瞬时功率
谐波电流
Three - phase four - wire system
Instantaneous power
Harmonic current
