CAJ | 학술논문

三相不平衡度是衡量电能质量的重要指标之一。随着各种非线性负载的大量应用，电能质量不断恶化。为保证电力系统安全稳定运行，需要对三相不平衡度进行实时检测。文章以虚拟仪器技术为平台，对电压、电流的正序、负序及零序分量的分解算法进行了深入研究，进而测量出电力系统的三相不平衡度。实例表明本文设计的三相不平衡度检测系统，不仅测量精度高，而且具有很强的扩展性，可以进一步应用于电能质量谐波参数的测试。
삼상불평형도시형량전능질량적중요지표지일。수착각충비선성부재적대량응용，전능질량불단악화。위보증전력계통안전은정운행，수요대삼상불평형도진행실시검측。문장이허의의기기술위평태，대전압、전류적정서、부서급령서분량적분해산법진행료심입연구，진이측량출전력계통적삼상불평형도。실례표명본문설계적삼상불평형도검측계통，불부측량정도고，이차구유흔강적확전성，가이진일보응용우전능질량해파삼수적측시。
Three-phase unbalance factor is one of the important indicators in measure of power quality. With a wide application of nonlinear loads, power quality has been deteriorating much. To ensure the operation of electric power systems stable and safe, it is a very urgent need for real-time detection of Three-Phase unbalance factor. With the vir-tual instrument technology as a platform, the algorithms of positive-sequence component, negative-sequence compo-nent and zero-sequence component about voltage and current have been studied deeply in this paper, and three-phase unbalance factor can be further measured in power system. The example shows that three-phase unbalance factor de-tection system designed in this paper not only has high measuring accuracy but also possesses strong expandability, which will be used in measuring harmonic parameters of power quality.