Simultaneous Fast Frequency Control and Power Oscillation Damping by Utilizing PV Solar System as PV-STATCOM

Varma, Rajiv K.; Akbari, Mohammad

doi:10.1109/tste.2019.2892943

Cited by 104 publications

(44 citation statements)

References 26 publications

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“…Generally, frequency deviations in the system typically come together with power oscillations in large power systems. In (Varma and Akbari, 2020), a power oscillation damping technique is presented based on reactive power modulation considering the large-scale PV plant as a STATCOM device. The authors highlight the effects of reactive power oscillation damping in conjunction with the fast frequency regulation controller.…”

Section: Grid-connected Converter In Mechanical Oscillation Dampingmentioning

confidence: 99%

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AI-Based Damping of Electromechanical Oscillations by Using Grid-Connected Converter

et al. 2021

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The proliferation of grid-connected converter interfaced energy sources in Smart Grids, enhance sustainability and efficiency as well as minimizing power losses and costs. However, concerns arise regarding the stability and reliability of future smart grids due to this wide integration of power electronic devices, which are recognized to affect the dynamic response of the system, especially during disturbances. For instance, apart from the lower damping of existing electromechanical modes, new low-frequency oscillations begin to appear. Yet, the ability of grid-connected converters to provide grid support functionalities can alleviate the aforementioned challenges. Relevant studies show that these functionalities can be enhanced even further, if information regarding the oscillation characteristics are available. Traditional methods for extracting modal information are very well suited for monitoring purposes, however, they pose certain limitations when considered for control applications. Therefore, this paper proposes a multi-band intelligent power oscillation damper (MiPOD) that exploits 1) the inherent characteristics of grid-connected converters to damp multiple power oscillations and 2) the modeling capabilities of Artificial Intelligence (AI) for predicting the frequency of electromechanical oscillations in the system, as operating conditions change. Essentially, the MiPOD integrates the AI model in the control loop of the converter to attenuate multiple modes of oscillation. The proposed controller is validated for different disturbances and randomly generated operating points in the two area system. Specifically, in this case the AI model is a Random Forest ensemble regressor that is developed for tracking two electromechanical modes. As it is shown, the MiPOD can improve the overall performance of the system under various contingency scenarios with only 6% of the corresponding total nominal capacity of synchronous generators. In addition, the monitoring and damping abilities of the MiPOD are demonstrated for a vast range of operating points just by tuning two parameters; the predicted oscillation frequencies of the local and inter-area mode.

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Section: Grid-connected Converter In Mechanical Oscillation Dampingmentioning

confidence: 99%

“…References Varma and Akbari (2020) and Zhou et al (2017) use the washout filter in addition to the phase compensation device to provide the reactive power modulation. In contrast, in (Knüppel et al, 2013), a simple low-pass filter is used to compensate on the phase displacement.…”

Section: Grid-connected Converter In Mechanical Oscillation Dampingmentioning

confidence: 99%

AI-Based Damping of Electromechanical Oscillations by Using Grid-Connected Converter

et al. 2021

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“…As a result, the DC-bus terminal voltage gets reduced gradually. Therefore, VSI needs to consume the inconsiderable amount of active power to preserve the DC-link's capacitor charge [29]. Notably, when the insolation is available, the inverter utilises an insignificant amount of DC power from the PV unit to charge the capacitor and residual power will be delivered to the electric grid/AC loads.…”

Section: Active Power Loss Component Estimationmentioning

confidence: 99%

Photovoltaic system operation as DSTATCOM for power quality improvement employing active current control

Patel

Gupta

Babu³

2020

IET Generation, Transmission & Distribution

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“…Recently, in some studies, the LFO damping by an auxiliary controller has been proposed as a power oscillation damper (POD) through LPFs 9‐15 . This idea was first raised in 2013 9 .…”

Section: Introductionmentioning

confidence: 99%

“…In 2016, the new idea based on adaptive control was suggested for controller design using LPF FGGM. 10 In References 11‐14 in 2019, the lead‐lag controller was proposed as POD for LPFs based on generic dynamic model for renewable technologies (GDMRT), second generation generic model (SGGM), and FGGM for LPFs.It should be noted that Reference 14 proposed the lead‐lag controller for LPF in a smart power system considering stochastic time delay.Recently, the proportional‐integral‐derivative (PID) controller has been proposed as POD for LFO damping using LPF 15 . The results of this study showed the superiority of the PID controller compared to the lead‐lag controller in terms of LFO damping.…”

Section: Introductionmentioning

confidence: 99%

Optimal coordinated tuning of power system stabilizers and wide‐area measurement‐based fractional‐order PID controller of large‐scale PV farms for LFO damping in smart grids

Saadatmand

Mozafari

Gharehpetian

et al. 2021

Int Trans Electr Energ Syst

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Summary In recent years, the installation of large‐scale photovoltaic (PV) farms (LPFs) is expanding around the world. Due to the addition of LPFs to the power system and increasing their penetration level, they should be able to undertake the most common tasks of conventional power plants in coordinated with other devices in the power system. Damping of low‐frequency oscillation (LFO) through the power system stabilizers (PSSs) is regarded as one of these common tasks. Therefore, the LPF must be able to damp the LFO in coordinated with the PSSs. This paper proposes a new method for LFO damping in power system which is based on optimal coordination of wide‐area measurement‐based fractional‐order proportional‐integral‐derivative (WMFOPID) controller as an auxiliary controller for LPF and PSSs of synchronous generators. The performance evaluation of the optimal coordinated WMFOPID controller is performed in a smart two‐area power system and is compared with other controllers in terms of LFO damping. The simulation results show the better performance of the optimal coordinated WMFOPID controller compared to the uncoordinated case and determine the effectiveness of the novel proposed method for LFO damping. The results also show the high robustness of the optimal WMFOPID controller compared to previous controllers, against some uncertainties in the power system.

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Simultaneous Fast Frequency Control and Power Oscillation Damping by Utilizing PV Solar System as PV-STATCOM

Cited by 104 publications

References 26 publications

AI-Based Damping of Electromechanical Oscillations by Using Grid-Connected Converter

AI-Based Damping of Electromechanical Oscillations by Using Grid-Connected Converter

Photovoltaic system operation as DSTATCOM for power quality improvement employing active current control

Optimal coordinated tuning of power system stabilizers and wide‐area measurement‐based fractional‐order PID controller of large‐scale PV farms for LFO damping in smart grids

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