Impact of mains connected three-phase induction motor loading levels on network voltage unbalance attenuation
Impact of mains connected three-phase induction motor loading levels on network voltage unbalance attenuation
复制标题
DOI：
10.1109/powercon.2012.6401337
复制
发表时间：
2012-10
期刊：
影响因子：
--
通讯作者：
U. Jayatunga;S. Perera;P. Ciufo
中科院分区：
文献类型：
--
作者：
U. Jayatunga;S. Perera;P. Ciufo
电力系统中的电压不平衡（VU）应该以系统的方式进行管理，以尽量减少其对客户设备和供电设施的不利影响。众所周知，三相感应电动机的性能在电源电压不平衡的情况下会受到显著影响。还已知的是，三相感应电动机可以帮助降低预先存在的网络电压不平衡水平。最近进行的研究符合IEC/TR 61000-3-13：2008电压不平衡管理技术报告（排放分配和排放评估），量化了感应电机对连接点净电压不平衡的贡献。据认为，负载水平的三相感应电动机将有影响，这一贡献。因此，本研究的重点是感应电动机的负载水平上的电压不平衡排放贡献的连接点的敏感性分析。进行的仿真工作表明，感应电动机上的负载水平的增加往往会加剧负序电压不平衡系数（VUF）的连接点相比，轻载感应电动机。
Voltage unbalance (VU) in power systems should be managed in a systematic manner in order to minimise its adverse effects on both customer equipment and supply utilities. It is a well known fact that three-phase induction motor performance can be significantly affected in the presence of supply voltage unbalance. It is also known that three-phase induction motors can help to reduce pre-existing network voltage unbalance levels. Recently undertaken research aligned with IEC/TR 61000-3-13:2008 Technical Report on voltage unbalance management (emission allocation and emission assessment) have quantified the contribution made by induction motors to the net voltage unbalance at a point of connection. It is perceived that loading level of three-phase induction motors will have an influence on this contribution. Hence, this study focuses on a sensitivity analysis of induction motor loading level on the voltage unbalance emission contribution to the point of connection. Simulation work undertaken indicates that increased loading levels on induction motors tend to exacerbate negative sequence voltage unbalance factor (VUF) at the point of connection in comparison to lightly loaded induction motors.