首页|Small-signal Stability Criteria in Power Electronics-dominated Power Systems:A Comparative Review
Small-signal Stability Criteria in Power Electronics-dominated Power Systems:A Comparative Review
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To tackle emerging power system small-signal sta-bility problems such as wideband oscillations induced by the large-scale integration of renewable energy and power electron-ics,it is crucial to review and compare existing small-signal sta-bility analysis methods.On this basis,guidance can be provided on determining suitable analysis methods to solve relevant small-signal stability problems in power electronics-dominated power systems(PEDPSs).Various mature methods have been developed to analyze the small-signal stability of PEDPSs,in-cluding eigenvalue-based methods,Routh stability criterion,Ny-quist/Bode plot based methods,passivity-based methods,posi-tive-net-damping method,lumped impedance-based methods,bi-furcation-based methods,etc.In this paper,the application con-ditions,advantages,and limitations of these criteria in identify-ing oscillation frequencies and stability margins are reviewed and compared to reveal and explain connections and discrepan-cies among them.Especially,efforts are devoted to mathemati-cally proving the equivalence between these small-signal stabili-ty criteria.Finally,the performance of these criteria is demon-strated and compared in a 4-machine 2-area power system with a wind farm and an IEEE 39-bus power system with 3 wind farms.
Impedance-based methodoscillation analysispower electronic converterpower electronics-dominated power systemrenewable power generationsmall-signal stability
Qifan Chen、Siqi Bu、Chi Yung Chung
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Department of Electrical and Electronic Engineer,The Hong Kong Polytechnic University,Hong Kong,China
Department of Electrical and Electronic Engineering,Shenzhen Research Institute,Centre for Grid Modernisation,Inter-national Centre of Urban Energy Nexus,Centre for Advances in Reliability and Safety,Research Institute for Smart Energy,and Policy Research Centre for In-novation and Technology,The Hong Kong Polytechnic University,Hong Kong,China
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