Improved dynamic phasor model of HVDC system for subsynchronous oscillation study

Hui-ping, Sun; Yang, Xue Tao; Wang, Xitian; Sun, Jibo

doi:10.1109/drpt.2011.5993939

Cited by 6 publications

(2 citation statements)

References 3 publications

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“…If there is a way to identify situations that are of low risk of SSR with little information on the generator shaft and very small calculation amount, then the number of cases for using detailed electromagnetic transient simulation methods to analyse the risk of SSR could be reduced obviously. An example of such a screening technique is the unit interaction factor (UIF) [10–12] to screen the possibility of sub‐synchronous oscillation [13–15] between thermal units and nearby high‐voltage direct‐current converters. A limitation of the UIF is that it has not been developed for series compensated networks.…”

Section: Introductionmentioning

confidence: 99%

Screening technique for identifying the risk of sub‐synchronous resonance

Liu

et al. 2016

IET Generation, Transmission & Distribution

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Section: Introductionmentioning

confidence: 99%

Screening technique for identifying the risk of sub‐synchronous resonance

Liu

et al. 2016

IET Generation, Transmission & Distribution

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“…However, generator shaft of a thermal plant has a great opportunity to exchange sub-synchronous energy with the series compensation capacitor and then sub-synchronous resonance (SSR) occurs [4][5][6][7][8]. Since electric strength between AC Buses, which is decided by short-circuit capacity of an equivalent system, can change the resonance frequency of the system and damping characteristics of SSR [9][10][11][12], at the system planning stage it is critical to ensure the short-circuit capacity does not make contributions to exciting SSR.…”

Section: Introductionmentioning

confidence: 99%

A Fast Method to Determine Short-circuit Capacity Based on Compensation Impact Factor

Li¹,

Song²,

Xia³

et al. 2018

Proceedings of the 2018 2nd International Conference on Applied Mathematics, Modelling and Statistics Application (AMMSA 2018)

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Abstract-This paper proposes a fast method to determine short-circuit capacity for an AC system, which includes a compensation capacitor, to avoid sub-synchronous resonance (SSR) risk at a system planning stage. Firstly, the compensation impact factor (CIF) is calculated for generators with different short-circuit capacities. If CIF of all generators are below the threshold value, then the short-circuit capacity is the safety one. Finally, safety short-circuit capacity group is formed and strongly suggested to the system planning due to no SSR risk threating the system. The proposed method needs simple system modeling and calculation process and little information on generator shaft. Simulation results show that the proposed method can precisely determine the safety short-circuit capacity group for the system.

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