振动与冲击
振動與遲擊
진동여충격
JOURNAL OF VIBRATION AND SHOCK
2015年
2期
50-54
,共5页
张中华%付景超%李鹏松
張中華%付景超%李鵬鬆
장중화%부경초%리붕송
电力系统%Hopf 分岔%中心流形理论%电压稳定性
電力繫統%Hopf 分岔%中心流形理論%電壓穩定性
전력계통%Hopf 분차%중심류형이론%전압은정성
power system%hopf bifurcation%center manifold theory%voltage stability
针对小水电并网系统，用 Matcont 软件搜寻系统的 Hopf 分岔点绘制分岔图；利用中心流形理论将高维电力系统降到二维模型，并通过计算二维模型分岔稳定性指标的正负判定原系统 Hopf 分岔类型。结果表明，分岔稳定性指标大于零时电压失稳，小于零时电压稳定。用 Matlab 软件对讨论结果进行数值仿真，证明理论结果的正确性。
針對小水電併網繫統，用 Matcont 軟件搜尋繫統的 Hopf 分岔點繪製分岔圖；利用中心流形理論將高維電力繫統降到二維模型，併通過計算二維模型分岔穩定性指標的正負判定原繫統 Hopf 分岔類型。結果錶明，分岔穩定性指標大于零時電壓失穩，小于零時電壓穩定。用 Matlab 軟件對討論結果進行數值倣真，證明理論結果的正確性。
침대소수전병망계통，용 Matcont 연건수심계통적 Hopf 분차점회제분차도；이용중심류형이론장고유전력계통강도이유모형，병통과계산이유모형분차은정성지표적정부판정원계통 Hopf 분차류형。결과표명，분차은정성지표대우령시전압실은，소우령시전압은정。용 Matlab 연건대토론결과진행수치방진，증명이론결과적정학성。
The grid-connected small hydropower system was concerned.The Hopf bifurcation point of system was found and bifurcation diagrams were drawn by using Matcont Software.The high-dimensional power system was tranfeered to a two-dimensional system in the light of center manifold theory,and the bifurcation stability coefficient of the two-dimensional system was calculated to determine the Hopf bifurcation type of original system.Some conclusions were drawn that the voltage is unstable when the stability coefficientis greater than zero and the voltage is stable when the stability coefficient is less than zero.Matlab Software was applied to verify the discussions.
