Title :
Representing line voltage unbalance
Author_Institution :
Dept. of Electr. Eng., Kwangwoon Univ., Seoul, South Korea
Abstract :
Representing the degree of voltage unbalance with the voltage unbalance factor (VUF) derived from symmetrical transformation requires complex phasor manipulations. This paper investigates various ways of representing VUF to facilitate the calculation in field applications. A formula for VUF with readily available line-to-line voltage magnitudes is derived and a straightforward graphical way of determining VUF is proposed. Various approximate methods are examined and it is shown that some alternative measures can be more effective in approximating VUF than conventional ones.
Keywords :
power supply quality; complex phasor manipulations; distribution systems; line voltage unbalance; line-to-line voltage magnitudes; power quality; symmetrical transformation; voltage unbalance factor; voltage unbalance measurement; Condition monitoring; Gain measurement; IEC standards; Industrial power systems; Niobium compounds; Phase measurement; Power engineering and energy; Power measurement; Power quality; Voltage measurement;
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
Print_ISBN :
0-7803-7420-7
DOI :
10.1109/IAS.2002.1043766
