Investigation of Subsynchronous Resonance With VSC-Based HVDC Transmission Systems

Prabhu, Nagesh; Padiyar, К.R.

doi:10.1109/tpwrd.2008.2005878

Cited by 87 publications

(45 citation statements)

References 12 publications

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“…In [28], a comprehensive study on the role that VSC-HVDC links has on SSR has been presented. Through damping torque and eigenvalue analyses, it has been shown that the impact of the HVDC link on SSR is minimal; in fact, for some operating conditions, it contributes positive damping.…”

Section: Offshore Reinforcement Through Hvdc Linksmentioning

confidence: 99%

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Damping of subsynchronous resonance using a voltage source converter‐based high‐voltage direct‐current link in a series‐compensated Great Britain transmission network

Livermore

Ugalde‐Loo

Qin

et al. 2014

IET Generation, Transmission & Distribution

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Owing to increased levels of generation in Scotland, substantial onshore and offshore reinforcements to the Great Britain (GB) transmission network have been proposed. Possible inland reinforcements include the use of series compensation through fixed capacitors. This potentially can lead to subsynchronous resonance (SSR). Offshore reinforcements are proposed by high-voltage direct-current (HVDC) links. In addition to its primary functions of bulk power transmission, a voltage source converter-based HVDC link can be used to provide damping against SSR, and this function has been modelled. Simulation results have been carried out in Power Systems Computer-Aided Design, with system analysis conducted in MATLAB. A real-time hardware-in-the-loop real-time digital simulator-HVDC test rig has been used to implement and validate the proposed damping scheme on an experimental platform. The simulation and experimental results show good agreement.

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Section: Offshore Reinforcement Through Hvdc Linksmentioning

confidence: 99%

“…Therefore, the presence of the HVDC link, by itself, will not reinforce SSR, as shown by the simulations and experimental results in Sections 3.3 and 5. It should be emphasised that [28] centres the discussion on torsional interactions, which is the type of SSR that this paper addresses.…”

Section: Offshore Reinforcement Through Hvdc Linksmentioning

confidence: 99%

Damping of subsynchronous resonance using a voltage source converter‐based high‐voltage direct‐current link in a series‐compensated Great Britain transmission network

Livermore

Ugalde‐Loo

Qin

et al. 2014

IET Generation, Transmission & Distribution

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“…The design of SSCS also refers to tuning the gain values 1 k to 8 k of the filters and is based on damping torque analysis [16], [17].…”

Section: Design Of Sscsmentioning

confidence: 99%

Design and performance evaluation of subsynchronous current suppressor with SSSC

Prabhu¹,

Thirumalaivasan

Janaki

2009

TENCON 2009 - 2009 IEEE Region 10 Conference

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A long transmission line needs controllable series as well as shunt compensation for power flow control and voltage regulation. This can be achieved by suitable combination of passive elements and active FACTS controllers. In this paper, series passive compensation and series active compensation provided by a static synchronous series compensator (SSSC) are considered. This paper presents investigation of subsynchronous resonance (SSR) characteristics of the hybrid series compensated power system and proposes a novel method for the extraction of subsynchronous component of line current using filter. The extracted subsynchronous frequency component of line current is used to modulate the SSSC injected voltage which suppresses subsynchronous current in the transmission network. This novel technique is termed as Subsynchronous Current Suppressor (SSCS). The design of SSCS is based on damping torque analysis. The results show the effectiveness of SSCS in damping in SSR.The 3-phase model of the SSSC is based on the switching functions. By neglecting harmonics in the switching function, D-Q model is derived which is combined with similar models of the other system components for linear analysis. The results of the linear analysis are validated by carrying out transient simulation based on the detailed nonlinear models.

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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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Investigation of Subsynchronous Resonance With VSC-Based HVDC Transmission Systems

Cited by 87 publications

References 12 publications

Damping of subsynchronous resonance using a voltage source converter‐based high‐voltage direct‐current link in a series‐compensated Great Britain transmission network

Damping of subsynchronous resonance using a voltage source converter‐based high‐voltage direct‐current link in a series‐compensated Great Britain transmission network

Design and performance evaluation of subsynchronous current suppressor with SSSC

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

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