Hopf bifurcations of Subsynchronous resonance in a hybrid series compensated system with SSSC-ES

Mala, R.C.; Prabhu, Nagesh; Rao, H. V. Gururaja

doi:10.1109/tapenergy.2015.7229594

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…It further demonstrates that systems may experience severe oscillations due to SSR with increasing series compensation. However, most previous work utilizes bifurcation theory to analyse TI types of SSR issues, for example in [5]- [7], with few studies investigating IGE or SSCI with bifurcation theory, despite their higher probability of occurrence. Also, when modelling the generator, previous research analysed synchronous generators; an induction machine is more suitable for WPP analysis.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear analysis of SSR in wind power plants

Chen¹,

Preece²,

Barnes³

2021

IET Conf. Proc.

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This paper analyzes sub-synchronous resonance (SSR) in future wind power plants (WPPs) using bifurcation theory, a nonlinear analysis approach. SSR, and in particular the Induction Generator Effect (IGE) is likely to occur more frequently as large amounts of wind power are incorporated into power networks, supported by series compensation to improve power transfer capability. A nonlinear 10 th order modified IEEE first benchmark model is developed. Bifurcation analysis reveals the critical conditions resulting in IGE are identified as a Hopf bifurcation point, verified by considering the trajectory of system eigenvalues and also through transient time domain simulation. The application of bifurcation theory is compared with the linear Nyquist stability criterion. The results from the Nyquist approach show that both analytical methods are in agreement with each other. However, the nonlinear bifurcation analysis determines system stability with respect to any parameters of interest, whereas the Nyquist stability criterion only determines the system stability at a specific operating point.

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Section: Introductionmentioning

confidence: 99%

Nonlinear analysis of SSR in wind power plants

Chen¹,

Preece²,

Barnes³

2021

IET Conf. Proc.

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“…FACTS controllers can be used to mitigate SSR [11]. Sub-synchronous resonance in a hybrid compensated system with FACTS controller incorporating energy storage device has been investigated in [12,13].…”

Section: Introductionmentioning

confidence: 99%

Dynamic bifurcation analysis and mitigation of SSR in SMIB system

Ramachandra

Mala

Rao

2019

IJEECS

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This paper presents a detailed study on Sub-synchronous resonance in a Single machine connected to an infinite bus system by employing Bifurcation Theory. The synchronous machine model considered is a two-axis model, the turbine system is a six mass system. A comparative study of Sub-synchronous resonance for the two-axis synchronous machine models 1.1, 2.1 and 2.2 under constant excitation is presented in this paper. The effect of adding an exciter, power system stabilizer and Static Synchronous Series Compensator to the SMIB system, incorporated with a 2.2 synchronous machine model on the bifurcations of SSR is also investigated. The results obtained on replacing the fixed series compensation of the line by Static Synchronous Series Compensator resulted in the mitigation of Sub-synchronous Resonance. The results obtained for all the above-considered cases are compared with eigenvalue analysis and validated using transient analysis<strong>.</strong>

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“…STATCOM -ES is discussed in [15], [16]. Reactance and resistance emulated by SSSC is likely to affect the operation of distance relay and system stability.…”

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confidence: 99%

Emulated reactance and resistance by a SSSC incorporating energy storage device

Rao¹,

Prabhu²,

Mala³

2019

IJECE

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Static Synchronous series compensator without energy storage device can exchange only reactive power with the network and can operate in limited operating range in two quadrants only. When energy storage device is connected at the DC bus of SSSC (SSSC -ES), it can also exchange real power with the network. Operating range of SSSC will be much broader and it covers all the four quadrants. However, emulated reactance and resistance by SSSC -ES is likely to affect the performance of a distance protection system. This paper presents a detailed model of an SMIB system with SSSC -ES. Injected voltage by SSSC -ES in all the four quadrants of operation is presented. Impact of operation of SSSC -ES in different quadrants and various control strategies for SSSC -ES on impedance emulated by SSSC -ES during steady state condition and transient system disturbance is discussed.

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Hopf bifurcations of Subsynchronous resonance in a hybrid series compensated system with SSSC-ES

Cited by 4 publications

References 9 publications

Nonlinear analysis of SSR in wind power plants

Nonlinear analysis of SSR in wind power plants

Dynamic bifurcation analysis and mitigation of SSR in SMIB system

Emulated reactance and resistance by a SSSC incorporating energy storage device

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