Determination of Generator Active Power Output Limit by Stability Sensitivity Index
Transient stability analysis is central to maintain the integrity of electrical power system operation and planning. Trajectory analysis method is an effective approach for evaluating the power system transient stability by stable/unstable indices based on the individual machine trajectory. The foundation of modern measurement system can provide vast measured trajectories which embody system dynamic characteristics. Trajectory sensitivities provide a way of quantifying the variation of trajectory resulting from (small) changes of parameters and/or initial condition which can enlarge the characteristic of trajectory in parameter space. The sensitivity of stable index with respect to some key parameters will be useful for control strategy making in power system operation. A trajectory sensitivity based algorithm for calculating the sensitivity of stable index has been proposed in this paper. An approach for assessment of maximal active power output is developed based on transient stability index sensitivity. This method has been applied to calculate generator active power output limit in multi-machine power system. The test results have been shown that the proposed method is achieving satisfactory results when compared with the simulation counterparts.
dynamic analysis transient stability stability index trajectory sensitivity active power output limit
Hongbo LIU Gang MU Furong LI
Northeast Dianli University, Changchun Rd. 169, Jilin City, Jilin Prov., P.R.China, 132012 University of Bath, UK
国际会议
The International Conference on Electrical Engineering 2009(2009 电机工程国际会议)
沈阳
英文
1-6
2009-07-05（万方平台首次上网日期，不代表论文的发表时间）