Damping of system oscillatory modes by a phase compensated gas turbine governor

Yee, S.K.; Milanović, Jovica V.; Hughes, F.M.

doi:10.1016/j.epsr.2009.10.013

Cited by 12 publications

(6 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The PCG is implemented as an additional phase lead-lag block in the governor control loop (see Figs. 34-38) as explained in detail in [11] and [12].…”

Section: Implementation Of Phase Compensated Governormentioning

confidence: 99%

“…With the GT models that have been validated with measured results, a more active control methodology for the governor is implemented according to [11] and [12] and the impact on the GTs investigated. The feasibility of the phase compensated governor (PCG) is demonstrated for both a transient and small signal disturbance.…”

Section: Implementation Of Phase Compensated Governormentioning

confidence: 99%

See 1 more Smart Citation

Validated Models for Gas Turbines Based on Thermodynamic Relationships

Yee

Milanović

Hughes

2011

IEEE Trans. Power Syst.

View full text Add to dashboard Cite

Many different types of gas turbines (GTs) are currently in use in power systems worldwide. These gas turbines can be broadly classed as single shaft GT (heavy duty GT) or twin shaft GT (aero-derivative). Due to the different construction of the two types of GT, their responses to the same operational disturbances can differ widely. Modern electronic governors offer wide scope for utilizing the GT to provide a contribution to network support in terms of damping provision and post-fault recovery, features that currently are not included in governor control performance specifications. In order to assess such capability, models capable of yielding more detailed information about GT dynamic behavior than those presently available are needed. This paper presents validated GT models developed from first principles based on the underlying physical processes that dictate the dynamic responses of GTs. The models are validated against manufacturer factory test data and differences in the dynamic behavior of the two major types of GTs are explored. In addition, phase compensated governors are implemented to explore the feasibility of employing such devices in a realistic GT operational scenario.

show abstract

“…The PCG is implemented as an additional phase lead-lag block in the governor control loop (see Figs. 34-38) as explained in detail in [11] and [12].…”

Section: Implementation Of Phase Compensated Governormentioning

confidence: 99%

Section: Implementation Of Phase Compensated Governormentioning

confidence: 99%

Validated Models for Gas Turbines Based on Thermodynamic Relationships

Yee

Milanović

Hughes

2011

IEEE Trans. Power Syst.

View full text Add to dashboard Cite

show abstract

“…due to fast speed governors reacting within seconds, or in slow inter-area swing modes in very large grids. In such cases, the frequency control may possibly provide damping to swing dynamics [27], [28].…”

Section: A Categorisationmentioning

confidence: 99%

Power System Stability With a High Penetration of Inverter-Based Resources

Green

2023

Proc. IEEE

View full text Add to dashboard Cite

Inverter-Based Resources (IBR) possess dynamics which are significantly different to those of synchronousgenerator-based sources and as IBR penetrations grow the dynamics of power systems are changing. The paper discusses the characteristics of the new dynamics and examines how they can be accommodated into the long-standing categorisations of power system stability in terms of angle, frequency and voltage stability. It is argued that inverters are causing the frequency range over which angle, frequency and voltage dynamics act to extend such that the previously partitioned categories are now coupled and further coupled to new electromagnetic modes. While grid-forming (GFM) inverters share many characteristics with generators, grid-following (GFL) inverters are different. This is explored in terms of similarities and differences in synchronisation, inertia and voltage control. The concept of duality is used to unify the synchronisation principles of GFM and GFL inverters, and thus is established the generalised angle dynamics. This enables analytical study of GFM-GFL interaction which is particularly important to guide the placement of GFM apparatuses and is even more important if GFM inverters are allowed to fallback to GFL mode during faults to avoid over-sizing to support short-term overload. Both GFL and GFM inverters contribute to voltage strength but with marked differences, which implies new features of voltage stability. Several directions for further research are identified including (i) extensions of nonlinear stability analysis to accommodate new inverter behaviours with cross-coupled time-frames. (ii) establishment of spatialtemporal indices of system strength and stability margin to guide the provision of new stability services and (iii) datadriven approaches to combat increased system complexity and confidentiality of inverter models.

show abstract

“…PSS control action adversely influences terminal voltage control and also contributes to leading power factor operation. Governor control has been traditionally employed over a decade for frequency control 21 and the author in Reference 22 proposed advancement in governor action. But, as per Reference 23, hydro governors are blocked for inter area oscillations because they are not adequately tuned to provide damping but, as per our research if they are coordinated with SSSC‐FACTS power oscillation damping controller and tuned by suitable control law their efficacy can be improved.…”

Section: Introductionmentioning

confidence: 99%

A new optimal static synchronous series compensator‐governorcontrol action for small signal stability enhancement of random renewable penetrated hydro‐dominated power system

Nahak

Satapathy

Sengupta

2021

Optim Control Appl Methods

View full text Add to dashboard Cite

Subject to intermittent nature of renewable sources, small signal stability (SSS) is going to be a challenging task for power system operators. Also as per current deregulated market, stress is imposed on optimal usage of present resources like mechanical governors. In this work a new coordinated optimal damping control action of fractional static synchronous series compensator (SSSC) and governor is proposed to the critical condition of power system for SSS enhancement considering sudden and random variation in solar photovoltaic (SPV) and wind sources with different operating condition of hydro generations and change in reference voltage. Both SSSC and governor coordinate to damp system oscillations to improve stability. A new hybrid differential evolution (DE) with whale optimization algorithm (WOA) is proposed to tune the gains of SSSC and governor in proposed controller. A multi objective function incorporating speed and real power deviation has been taken for optimization problem. It has been observed that varying operating condition of hydro generator along with variations in SPV and wind sources instigate low frequency oscillation and proposed control action has better damping efficacy in comparison to only SSSC and governor. Also, the proposed multi-objective DE-WOA control law performs better than only DE and WOA algorithm.

show abstract

Damping of system oscillatory modes by a phase compensated gas turbine governor

Cited by 12 publications

References 4 publications

Validated Models for Gas Turbines Based on Thermodynamic Relationships

Validated Models for Gas Turbines Based on Thermodynamic Relationships

Power System Stability With a High Penetration of Inverter-Based Resources

A new optimal static synchronous series compensator‐governorcontrol action for small signal stability enhancement of random renewable penetrated hydro‐dominated power system

Contact Info

Product

Resources

About