Research of Sub-Synchronous Oscillations in HVDC and SSDC Designing

Han, Chunyan; Guo, Chun Lin; Chen, Qin Lei; Tang, Zhe; Li, Ya Nan; Jiang, Wei

doi:10.4028/www.scientific.net/amr.960-961.1062

Cited by 1 publication

(4 citation statements)

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“…The phenomenon mainly resulted from inappropriate converters parameters [2,5]. Since this discovery, literature states that HVDC controls should also be considered potential SSO sources [6][7][8]. Although HVDC controls can potentially induce SSO, the converters' high controllability can help minimize the phenomenon [5].…”

Section: Introductionmentioning

confidence: 99%

“…Although HVDC controls can potentially induce SSO, the converters' high controllability can help minimize the phenomenon [5]. Several authors explored this feature to mitigate torsional oscillations in HVDC-equipped power grids [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…The broad bandwidth controller provides considerable damping of severe vibration modes [14]. This controller has a single-mode structure whose target subsynchronous frequency is often the most severe torsional mode [6,7,15]. The narrow bandwidth controller structure comprises several single channels, allowing each oscillatory mode's specific monitoring.…”

Section: Introductionmentioning

confidence: 99%

“…The narrow bandwidth controller structure comprises several single channels, allowing each oscillatory mode's specific monitoring. This controller is also known as the multi-channel or multimodal damping controller (MMDC) [7]. Each channel of the MMDC includes a bandpass filter set to the mode tuning frequency to extract from the feedback signal only the characteristic modal component [14].…”

Section: Introductionmentioning

confidence: 99%

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Damping Subsynchronous Oscillations Using a High Voltage Direct Current-Based Multi-Modal Damping Controller

Tambwe

Carpanen

2022

JERA

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Conventional series capacitors in transmission lines are of paramount importance for enhancing power transfer capability. However, the major drawback of series capacitors is the induced subsynchronous resonance phenomenon in power systems. This phenomenon affects nearby turbogenerator shafts and severely limits their reliability. Also, the controls of High Voltage Direct Current links are considered as a potential source of subsynchronous oscillations. This paper investigates the performance of a multimodal damping controller to stabilize unstable torsional modes in combination with a Power System Stabilizer for inertial mode damping. This research uses time-domain simulation-based multimodal damping controller design methods, namely the test signal and phase correction methods. These two methods involve injecting a test signal at a frequency of interest into the rectifier current control loop and measuring its phase difference with the electromagnetic torque, thus providing corresponding compensators to minimize the resulting angle. This work uses Power System Computer-Aided Design for time-domain simulation and Fast Fourier Transforms Analysis to conduct the phase correction method and verify controller performance.

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