Conference Proceeding

Power system load ranking for voltage stability analysis

Sch. of Electr. & Comput. Eng., Cornell Univ., Ithaca, NY
DOI:10.1109/PES.2006.1709345 pp.8 pp. In proceeding of: Power Engineering Society General Meeting, 2006. IEEE
Source: IEEE Xplore

ABSTRACT Load modeling is well known to have a significant impact on voltage stability analysis while it is not clear the degree of influence each load has on voltage stability analysis. In this paper the problems associated with quantifying the degree of influence and load ranking on voltage stability analysis are addressed. A computational method based on load margin for this numerical quantification is presented. A load ranking scheme is developed and applied to Taiwan power system to rank the degree of influence each nodal load of Taipower transmission network on load margin of voltage stability. Physical insights of top-ranked nodal loads are provided. Furthermore, the robustness of load ranking under different loading conditions, different contingencies and different power transfer patterns is investigated. Some applications of load ranking results are described

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Keywords

applications
 
computational method
 
different contingencies
 
different loading conditions
 
different power transfer patterns
 
load margin
 
Load modeling
 
load ranking
 
load ranking results
 
load ranking scheme
 
nodal load
 
numerical quantification
 
Physical insights
 
significant impact
 
Taipower transmission network
 
Taiwan power system
 
top-ranked nodal loads
 

Yinhong Li