| Xinjiang have a vast territory,and its power grid is weak overall.The power grid is single circuit Jong distance and weakly connected in most area,so long distance transmission is more common.At the same time,accessing wind power into the grid takes more uncertain factors on Xinjiangpower grid stability.Aiming at the actual situation of Xinjiang Power Grid,studying the on the low frequency oscillation (LFO) influence about energy storage system accessing to Xinjiang power grid can have the realistic significance on Xinjiang Grid planning and operation.Paper,first of all,expounds the classification of power energy storage system and its using in power system in brief.Based on introducing the theory on low frequency oscillation of power system in depth,it studies the controlling modeling of energy storage system in the PSS/E.Taking the four generators and two areas system as typical example,it uses eigenvalue analysising the small signal stability in frequency domain in detailed.Studying and comparing influence with energy storage system accessing to this grid.It uses eigenvalue analysising the small signal stability on Xinjiang Grid.Take into consideration of wind power accessing to Xinjiang Grid,it discusses the influence of low frequency oscillation on wind power to Xinjiang Grid.Finally,using time domain simulation method checks the influence of low frequency oscillation on energy storage accessing to Xinjiang GridPaper, taking PSS/E as tool, using linear system-the state space method as theoretical basis, using time-domain simulation method for checking, combining the quantitative calculation and qualitative analysis, elaborates the influence of low frequency oscillation on energy storage accessing to Xinjiang Grid. |
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