摘要
分析比较了传统瞬时无功功率理论与p-q-r功率理论。两者是在不同的坐标系下定义各自的瞬时功率量,两者功率定义都认为瞬时电流与电压同方向的是有功电流,与电压方向垂直的是无功电流。通过理论分析及仿真可知两种方法的补偿效果是完全一致的。p-q-r理论比传统功率理论多了两次坐标变换,计算量比较大,在检测效果相同的情况下,运用传统无功理论进行谐波检测可以有效减小计算量。
The traditional instantaneous reactive theory and p-q-r reactive theory are compared in this paper. These two theories define instantaneous active or reactive power in different coordinates. They both assume that active current is on the same direction with voltage and reactive current is orthogonal to voltage. Through theory analysis and simulation, it can be observed that these two methods can obtain the same compensation results. Furthermore, p-q-r theory needs two more coordinate conversions than tradition reactive theory. So with the same detection result, the harmonic detection using tradition reactive theory needs less calculation than that of p-q-r theory.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2006年第1期74-77,共4页
Proceedings of the CSU-EPSA
