Abstract
Small-signal angular stability of a power system may be affected considerably by a grid-connected VSWG under the condition of open-loop modal resonance. This chapter introduces the concept of open-loop modal resonance. Why strong dynamic interactions may be induced by the grid-connected VSWG when the open-loop modal resonance happens is examined. Analysis is presented to indicate that the open-loop modal resonance may very likely degrade the small-signal angular stability of the power system. Both the grid-connected PMSG and DFIG are studied.
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Appendix 5.1: Data of Examples 5.1 and 5.2
Appendix 5.1: Data of Examples 5.1 and 5.2
5.1.1 Data of New England Power System
They are given in Appendix 4.2.1.
5.1.2 Data of DFIG
They are given in Appendix 4.2.2.
5.1.3 Data of PMSG
Basic data
Xpd = 0.25, Xpq = 0.15, Xpf = 0.05,
Cp = 30, Jpr = 8s, ψpm = 1.1
Control parameters of MSC
Kpp1 = 5, Kpi1 = 20, Kpp2 = 1, Kpi2 = 100, Kpp3 = 1, Kpi3 = 100
Control parameters of GSC
Kpp4 = 0.8, Kpi4 = 20, Kpp5 = 0.15, Kpi5 = 84.9, Kpp6 = 0.28, Kpi6 = 12, Kpp7 = 0.15, Kpi7 = 84.9
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Du, W., Wang, H., Bu, S. (2018). Small-Signal Angular Stability of a Power System Affected by Strong Dynamic Interactions Introduced from a Grid-Connected VSWG. In: Small-Signal Stability Analysis of Power Systems Integrated with Variable Speed Wind Generators. Springer, Cham. https://doi.org/10.1007/978-3-319-94168-4_5
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DOI: https://doi.org/10.1007/978-3-319-94168-4_5
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