Oscillation Center Positioning Method Based on Advanced Branch Potential Energy
In view of the problems of the unknown downtime and uncertain integral starting time in the current oscillation center positioning method based on energy method,this paper proposes a positioning method based on branch potential energy with active power change.Firstly acquire the generator set group-dividing situation after fault,and emphatically observe the lines between groups; then,derive the time when active power change rate is greater than the setting value,and take it as the integral starting time for branch potential energy; finally,obtain the line with the largest potential energy change,i.e.the line where the oscillation center is located,and test the obtained results with the definition of oscillation center.The calculation cases about an IEEE 39-bus system in New England and a provincial grid in China have verified the effectiveness of the proposed method.
transient stabilitybranch potential energyoscillation centeractive power change rate
NETL
NSTL
万方数据
维普
