Formulations for the apparent and unbalanced power vectors in three-phase sinusoidal systems

被引：4
|
作者：
Leon-Martinez, Vicente [1 ]
Montanana-Romeu, Joaquin [1 ]
机构：
[1] Univ Politecn Valencia, Camino Vera 14, E-46022 Valencia, Spain
来源：
ELECTRIC POWER SYSTEMS RESEARCH | 2018年 / 160卷
关键词：
Apparent power; Unbalanced power; Asymmetrical system; Power system; Power theory; REFERENCE-FRAME PLL; PERFORMANCE; SYNCHRONIZATION; CONVERTERS; COMPENSATION; PARAMETERS; ALGORITHM; FILTER; LOOP;
D O I：
10.1016/j.epsr.2018.01.028
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Buchholz's apparent power and its derived unbalanced power, determined from the quadratic difference between the apparent power and the positive-sequence apparent power, are formulated in this paper in vector notation for three-phase sinusoidal systems. The proposed unbalanced power vector holds three components that measure the imbalance effects caused by the active and reactive currents, and the voltage imbalance effects, respectively. The total apparent and unbalanced powers of several subsystems (sources or loads) can be respectively obtained as the norm of the vector sums of their apparent and unbalanced power vectors, according to these new formulations. The correctness of the apparent and unbalanced power vector formulations are verified in a three-phase sinusoidal installation formed by two linear loads supplied from a 400 kVA delta/NA/ye distribution transformer, as an application example. (C) 2018 Elsevier By. All rights reserved.
引用
收藏
页码：37 / 55
页数：19
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