Technique for assessment of voltage stability in Ill-conditioned radial distribution network
Document Type
Article
Publication Date
1-1-2001
Abstract
A technique is proposed in this letter to study voltage collapse situation in a radial distribution network. The radial distribution network has been reduced to a single line equivalent circuit and then represented through a π network. A stability index is developed that indicates the severity of the loading situation of the system. The index can have a maximum value of one (1.00) when the system is at the point of collapse and a minimum value of zero (0) when there is no load in the system. Voltage collapse can be assessed based on the value of the developed index. If the system yields a value exceeding its maximum limit of stability index (1.00) it indicates voltage collapse situation. The proposed technique is tested on a practical system of 12-bus radial system (main feeders only) and on a 27-bus radial distribution system with laterals. The results obtained are encouraging and indicate that the technique has the potential to be used as a tool for system monitoring and future load planning.
Keywords
Electric breakdown, Electric lines, Equivalent circuits, Radial basis function networks, Voltage control, Single line equivalent circuit, Voltage collapse, Voltage stability, Voltage stabilizing circuits
Divisions
fac_eng
Publication Title
Power Engineering Review
Volume
21
Issue
1
Publisher
IEEE, Piscataway, NJ, United States