Abhineet Prakash
@iitp.ac.in
Research Scholar
Abhineet Prakash (Member, IEEE) received the B.E. degree in Electrical and Electronics Engineering from the Rajiv Gandhi Proudyogiki Vishwavidyalaya Bhopal, India, in 2015 and the M.Tech. degree in Power Systems from the National Institute of Technology Patna, India in 2018. Dr. Prakash has completed his Ph.D. degree with the Department of Electrical Engineering, Indian Institute of Technology Patna, India. He was a Visiting Researcher with the Department of Electrical Engineering and Computer Science, Khalifa University, Abu Dhabi, UAE. Currently, he is working as a system engineer (system studies) at General Electric (GE) Renewable Energy. His research interests include power system operation, control, and stability. He was the recipient of the Certificate of Excellence Award from the National Institute of Technology Patna in 2018. He has also been awarded with prestigious POSOCO Power System Awards 2023 by Grid Controller of India Ltd, Govt. of India.
EDUCATION
PhD IIT Patna
RESEARCH, TEACHING, or OTHER INTERESTS
Electrical and Electronic Engineering, Energy, Renewable Energy, Sustainability and the Environment, Renewable Energy, Sustainability and the Environment
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Kundan Kumar, Abhineet Prakash, S.K. Parida, Saibal Ghosh, and Chandan Kumar
Institute of Electrical and Electronics Engineers (IEEE)
Abhineet Prakash, Mohamed Shawky El Moursi, S. K. Parida, Kundan Kumar, and Ehab F. El-Saadany
Institute of Electrical and Electronics Engineers (IEEE)
Due to high penetration of renewable energy sources, inter-area oscillations (IAOs) have become serious concern for power system stability. Hence, a wide-area damping controller (WADC) strategy is proposed for thyristor-controlled series compensator (TCSC) device to effectively damp IAOs. The feedback signals for the WADC design are selected by the modal sparse linear quadratic regulator (MSLQR) method, which are sole signals that modulate simple gains to achieve the desired damping performance. Moreover, the multi-model framework approach is adopted to ensure optimal damping corresponding to any uncertainties such as changing operating scenarios and time latency in feedback signals. However, the proposed primary control does not provide frequency regulation; hence, a secondary control based on the switched integral controller is applied in addition to primary damping control to further maintain the frequency at the steady-state level. Performance of suggested strategy is evaluated and verified on IEEE 4-machine, 11-bus system and 16-machine, 68-bus system. A comprehensive analysis shows significant improvement in the damping performance of concerned modes, leaving the local modes almost unaffected while maintaining the frequency at the prescribed steady-state level.
Priya Singh, Abhineet Prakash, and S.K. Parida
Elsevier BV
Kundan Kumar, Abhineet Prakash, Priya Singh, and S.K. Parida
Institute of Electrical and Electronics Engineers (IEEE)
Integration of large-scale renewable energy sources in legacy power system has negative impact on inertia and low-frequency oscillations (LFOs). Critical LFO modes are the primary concern in system stability as they limit the power transfer capability in inter-region tie-lines. Therefore, to provide adequate damping to critical LFO modes, a robust wide-area damping controller (WADC) design is required. In this paper, time delayed feedback control (TDFC) based WADC design is carried out with large-scale solar photovoltaic (SPV). In the design process, geometric technique is used to determine the appropriate wide-area signals. Time delays and noises in feedback signals as well as different operating scenarios have severe implications on the damping performance of WADC. Hence, considering these uncertainties, the proposed WADC parameters are tuned by modified particle swarm optimization (PSO) algorithm. The performance of proposed WADC is demonstrated on SPV-integrated IEEE 4-machine 11-bus and 16-machine 68-bus systems. Critical modes of the system are damped by more than 10% damping ratio in both cases. Furthermore, nonlinear dynamic simulations demonstrate that the proposed WADC provides robust performance over wide operating scenarios. Finally, practical efficacy of the proposed method is established by experimental validation through real-time simulation using OPAL-RT.
Abhineet Prakash, Kundan Kumar, and S. K. Parida
Institute of Electrical and Electronics Engineers (IEEE)
Low-frequency oscillations (LFOs) are one of the major concerns in modern power system; hence, these should be appropriately treated in order to achieve reliable operation. In this regard, we propose a novel wide-area damping controller (WADC) to dampen LFO modes effectively. The proposed WADC utilized thyristor controlled series compensator (TCSC) based flexible ac transmission system (FACTS) device through which supplementary input is provided. The selection of modal feedback signals for WADC design is carried out using coordinated modal transformation and linear quadratic regulator (LQR) approach. However, these signals are not accessible directly through the phasor measurement devices (PMDs). Hence, this paper utilizes a reduced-order functional observer to estimate the feedback signals using PMD data. The estimated feedback signals are further modulated by simple gains to improve the damping of critical LFO modes. The proposed methodology is validated on benchmark 4-machine 11-bus system and a more practical 25-machine, 105-bus system representing the complex Eastern Regional Grid (ERG) of India. The results obtained on these nonlinear systems show a significant improvement in damping of the critical LFOs leaving the other modes almost unaffected.
Abhineet Prakash, Ranjeet Kumar Tiwari, Kundan Kumar, and S. K. Parida
Institute of Electrical and Electronics Engineers (IEEE)
The intermittent nature of Wind Turbine Systems (WTSs) can severely affect the Low-Frequency Oscillations (LFOs) in the power system. Hence, a Wide-Area Damping Controller (WADC) is designed in this paper to provide adequate damping to critical LFO modes. This WADC utilizes a modal-based prescribed degree approach, ensuring the specified shift of concerned modes from their existing position. However, the design of WADC at a fixed operating point and time delay in feedback signals does not provide robust performance as these uncertainties may vary for different time intervals. Specifically, time-varying delays should be tackled appropriately, or the system's damping performance will be severely hampered. Keeping this in view, an Interacting Multiple Model (IMM) infrastructure is employed to provide robust damping performance for such uncertainties. The IMM strategy utilizes the deviation of output error between actual and probable plants, through which weights are assigned to corresponding probable WADCs via the Bayesian framework. The simulations are performed on the nonlinear 4-machine, 11-bus system and the complex 16-machine, 68-bus system using MATLAB/Simulink platform. The results demonstrate that the proposed IMM-based WADC furnishes adequate damping to critical LFO modes for operating point and time delay uncertainties.
K Pradeep, K Vinay Kumar, T Vijay Muni, Katuri Rayudu, A Prakash, and Pandala Rathnakar Kumar
IEEE
This research used Grey Wolf Optimisation (GWO)-assisted ANFIS MPPT for single-phase grid-connected renewable energy systems. These energy sources’ carbon emissions have devastated the climate. For over two centuries, fossil fuels have powered the globe. Thus, the demand for pollution-free, sustainable, and plentiful energy production is growing. The DC-DC LUO converter minimises voltage stress and duty cycle, enabling power semiconductor switches to obtain substantial voltage. VSIs feed the converter’s output voltage into the Grid. A maximum power point tracking approach based on an adaptive neuro fuzzy inference system (ANFIS) controls the DC-DC converter to account for the PV’s variable output. Next, a GWO controller fine-tunes MPPT. A Single-Phase power Source Inverter (VSI) converts converter-generated DC power into grid-required AC voltage. LC filters boost inverter output. VSI switching pulses created using dq theory can synchronize the grid with low total harmonic distortion. MATLAB simulates the system’s performance.
Kumar Abhinav, Piyush Rai, Abhineet Prakash, and S. K. Parida
IEEE
In this study, Prony and Eigensystem Realization Algorithm (ERA) are compared for identifying electromechanical and forced oscillation modes. The varying number of excited modes in practical power systems makes the process of determining model order challenging. Prony requires an iterative procedure, while ERA utilizes Singular Value Decomposition (SVD) for direct model order determination. Comparitive studies shows that ERA accurately estimates the signal, and generates fewer insignificant modes compared to Prony. Identified modes are used to design a filter, which estimates desired signal frequency. The filtered signal’s periodogram is then compared with detection threshold to detect Forced oscillation (FO) at specific frequencies.
Abhineet Prakash, Priyesh Saini, and S. K. Parida
IEEE
Due to amalgamation of large-scale distributed generations (DGs), low frequency oscillation (LFO) becomes the primary concern in power systems. Therefore, it becomes paramount to design wide area damping controller (WADC) to provide sufficient damping to LFO modes. To design WADC, the availability of all the states is required. However, practical power grid is similar to black-box system and to design such controllers, reconstruction of all the states is necessary. In this effort, an observer based prescribed degree robust WADC is proposed for DG integrated system to damp the critical LFO modes. Furthermore, the WADC parameters are tuned by Nyquist robustness assessment and loop transfer recovery (LTR). Geometric approach is utilized to find the suitable control location in DG system and wide-area signals. The efficacy of proposed WADC is demonstrated on a complex 16-machine, 68bus system, and its performance is also compared to conventional optimal control method. From the simulation results, it is evident that the proposed WADC for DG furnishes enhanced damping towards critical modes for broad operating scenarios.
Priyesh Saini, Abhineet Prakash, and S. K. Parida
IEEE
The research proposes a novel approach to enhance the accuracy of Facebook Prophet model for short-term load forecasting (STLF) by encompassing feature selection and discrete wavelet transform (DWT). First, correlation analysis is performed to select the relevant features from the dataset. By identifying the influential variables associated with load demand, the model’s predictive capabilities are improved. To address the non-stationary behaviour of time series, DWT is applied to extract the trend component. This captures long-term patterns and variations in load demand, which are essential for accurate STLF. The Facebook Prophet model, known for its ability to handle time series with seasonality and trends, is then implemented for forecasting. Multiple evaluation metrics are employed to assess the performance of the proposed approach on testing data and comprehensive comparison with the already existing prophet model is done to recognize the importance of DWT in the proposed model.
Kumar Abhinav, Priyesh Saini, Piyush Rai, Abhineet Prakash, and S. K. Parida
IEEE
This study focuses on crucial challenges in forced oscillations (FOs) detection in power system. Since FOs require specialised mitigation schemes in contrast to electro-mechanical oscillations, it is crucial to detect the same prior to implementation of any control techniques. This paper presents a timeseries classification approach to detect FOs in power systems using Random Forest. The dataset is generated on the IEEE 4- generator 11-bus system, which is utilised to create a 3D array that is exploited to train and evaluate the machine learning model. The robustness of the technique is assessed via confusion matrix, F1 score, and receiver operating characteristic (ROC). The performance of proposed methodology is compared with other machine learning methods such as deep belief networks and neural network pattern recognition.
Abhineet Prakash, Mohamed Shawky El Moursi, S. K. Parida, and Ehab F. El-Saadany
Institute of Electrical and Electronics Engineers (IEEE)
Abhineet Prakash, Kumar Abhinav, Piyush Rai, and Sanjoy Kumar Parida
Informa UK Limited
Kundan Kumar, Abhineet Prakash, and S. K. Parida
IEEE
The stability of power grid is severely impacted by low-frequency oscillations (LFOs). To prevent serious power system eventualities, these need to be properly damped. In case of modern power systems, FACTS devices are now widely used to effectively damp such oscillations with improvement in stability of system. Therefore, in this work, wide-area damping control (WADC) with thyristor-controlled series capacitor (TCSC) is designed for concerned inter-area modes using active disturbance rejection control (ADRC) technique. At a steady-state equilibrium operating point, the system is linearized, and modal analysis is used to extract crucial LFO modes. Moreover, geometric method is used to identify the appropriate feedback for WADC. Dynamics of 11-bus system is simulated to prove the adequacy of proposed WADC. Results obtained using MATLAB/SIMULINK indicates that appropriate damping performance is achieved via suggested WADC architecture.
Abhineet Prakash, Kundan Kumar, and S. K. Parida
Informa UK Limited
Abstract Low-frequency oscillations (LFOs) pose a significant obstacle in achieving optimal power flow and utilizing transmission corridors in large interconnected power systems. In this study, linear matrix inequality (LMI) base robust wide-area damping controller (WADC) is introduced to effectively address critical LFOs. The proposed WADC utilizes wide-area signals, which modulate the phase angle of a thyristor-controlled phase shifter device. To ensure that the concerned modes of LFOs lie in left half of the complex plane, a D-space sub-region approach is applied. However, using wide-area signals introduces time delays, which negatively impact the efficacy of the WADC; hence, a time delay compensator (TDC) is incorporated into the feedback path of the signals. The proposed approach involves four key steps: selecting feedback signals using a combined modal transformation and geometric approach, designing an appropriate TDC, building a generalized plant with mixed sensitivity weights, and solving the LMI. The dynamic efficacy is verified on IEEE 4-machine 11-bus system, and 10-machine 39-bus system. Poorly damped single and multiple critical modes are placed in the D-space region of interest with specified damping ratios viz. 10% and 15%. Furthermore, damping ratios of critical modes are maintained with TDC based proposed WADC while deteriorating with other counterparts.
Abhineet Prakash, Mohamed Shawky El Moursi, S. K. Parida, and Ehab F. El-Saadany
IEEE
One of the biggest threats to power system stability is inter-area oscillations (IAOs). In long, interconnected tie lines, low-damping IAOs prevent rated power transfer. Hence IAOs must be identified and sufficiently damped to avoid these situations. Various controllers are available in the literature to dampen IAOs. However, as the operating point varies with time, performance of controller degrades. Hence, considering the operating point uncertainty, designing a wide-area damping controller (WADC) is necessary. This paper proposes a thyristorcontrolled series capacitor (TCSC) assisted WADC, which is a two-stage lead-lag power system stabilizer (PSS). The critical IAOs in interconnected system can vary with changes in operating scenarios. Hence, using the K-means algorithm, different clusters of IAOs are identified with their mean values. Then separate wide-area PSSs are designed for each cluster to improve the damping of their IAOs sets. Finally, the output of each wide area PSS is weighted using Gaussian distribution, i.e., wide area PSSs with high probability are assigned with higher weights, and that with low probability are assigned with lower weights. Finally, efficacy of the proposed methodology is demonstrated on 4-machine, 11-bus system.
Kundan Kumar, Abhineet Prakash, and S. K. Parida
IEEE
Low-frequency inter-area oscillation is a critical concern in the inter-linked power system. Numerous investi-gations are being carried out in order to damp these inter-area oscillations. High-voltage direct current (HVDC) links are now available to adequately mitigate these oscillations, while strengthening system stability. Hence, in this work, a robust wide area damping controller (WADC) is designed to modulate the power flow through HVDC tie-line for damping inter-area oscillation in power system. First step involves the determination of crucial inter-area modes by using modal analysis approach. Next, geometric technique is used to choose an appropriate wide-area feedback signal. Then, based on above information a robust $H_{\\infty}$ controller is designed in order to effectively damp out inter-area oscillation. Finally, the proposed WADC is validated on HVDC integrated 4-machine 11-bus system to ensure its efficacy.
Priya Singh, Abhineet Prakash, Kundan Kumar, and S. K. Parida
IEEE
The synchrosqueezed transform based on the continuous wavelet transform (CWT) is used in this article to obtain the ridge curve of noisy system signal measurements in order to identify and extract the oscillatory components of forced oscillation (FO), which is composed of slow varying amplitudes, frequencies, and harmonics locally. This is a method for re-assigning time frequencies that extracts explicit time frequency information from the requisite phase transformation information. It is demonstrated that it improves frequency resolution by minimizing spectral spreading and artifacts. The acquired result is compared to that obtained using CWT. The proposed methodology investigates the standard IEEE-4 machines 11 bus system and the IEEE-10 machines 39 bus system.
Abhineet Prakash, Kundan Kumar, and S. K. Parida
IEEE
Low-frequency oscillations (LFOs) are one of the significant threats to power system stability. They should be appropriately damped in order to avoid severe contingencies in the power system. Various methodologies are adopted to tackle these situations. In the modern power system scenario, management of the distribution side, i.e., load side, is a competent way to make the system stable. However, they are either deployed on the generation or transmission sides. Hence we propose a wide-area damping controller (WADC), which modulates active power on the load side to damp critical LFOs. This system is linearized at a stable operating point, and critical LFOs are identified using modal analysis. Furthermore, geometric measures are utilized to find suitable feedback signals for them. The WADC structure is considered as a one-stage power system stabilizer (PSS). The parameters of WADC are tuned by the metaheuristic particle swarm optimization (PSO) technique to achieve the desired damping ratio. To demonstrate the efficacy of the proposed methodology, dynamic simulations are conducted on 4-machine 11-machine system. Results are generated on MATLAB/SIMULINK® platform, which suggests that the system is able to achieve the desired damping performance with the proposed WADC design.
Abhineet Prakash, Priya Singh, Kundan Kumar, and S. K. Parida
Institute of Electrical and Electronics Engineers (IEEE)
The impact of wind turbine system (WTS) on power system stability is elaborately addressed in the literature. However, low-frequency oscillations, especially inter-area oscillations (IAOs) can be adversely affected due to their intermittent nature. This article proposes a wide-area damping controller (WADC) for WTS-integrated power system to damp IAOs effectively. The feedback signals (linear combination of the system states) are directly measurable from phasor measurement units. Therefore a reduced-order estimator is proposed instead of a full-order estimator to design the WADC. Furthermore, to select appropriate feedback signals for WADC design, combined geometric measure and modal decomposition techniques are utilized. The overall procedure to design the reduced-order WADC includes feedback signal selection, state feedback formulation using modal transformation approach, and reduced-order estimator design using loop transfer recovery procedure. Moreover, the WADC parameters are selected considering operating point uncertainties and variable time delays in feedback signals. Performance of the proposed WADC is validated on WTS-integrated 16-machine, 68-bus system. The simulation results show that the proposed WADC gives robust performance over broad operating scenarios.
Abhineet Prakash, Kundan Kumar, and S.K. Parida
Institute of Electrical and Electronics Engineers (IEEE)
Damping of low-frequency oscillations (LFOs) has become a critical challenge in modern power system. Since interarea LFO modes are associated with power oscillation, therefore, proper modulation of power through energy capacitor system (ECS) can be a competent way to conserve system stability. In this article, modeling of grid-connected ECS unit is explained thoroughly. Further to provide adequate damping to critical LFO modes, a linear quadratic Gaussian (LQG) based optimal $ H_{2}$ wide-area damping controller (WADC) is proposed for ECS integrated power grid. The parameters of the proposed WADC are tuned by accelerated particle swarm optimization (APSO) technique. Furthermore, to select the proper wide-area signals for controller design, geometric approach is adopted. The efficacy of proposed methodology has been tested on large power systems containing multiple interarea modes viz. 10-machine, 39-bus system and 16-machine, 68-bus system. Simulation studies demonstrated the capability of proposed WADC to adequately damp the multiple interarea modes simultaneously. Moreover, it also provides robust performance for operating point uncertainties (load variation, permanent outage of transmission lines, etc.) and variable time delays in feedback signals.
Abhineet Prakash, Priya Singh, Kundan Kumar, and S. K. Parida
IEEE
Low-frequency oscillations (LFOs) are the most concerned modes in power systems. A generic power system stabilizer (PSS) can damp the intra-area LFO modes using local measurements. However, to design of wide-area damping controller (WADC) for inter-area modes, if feedback signals are not selected properly, the other modes can also get affected. Therefore, in this paper, we intended to design a thyristor-controlled series capacitor (TCSC) based wide-area power system stabilizer (WAPSS) to damp concerned inter-area mode. The modal decomposition method to design WAPSS shows that a feedback signal which contains more information than the concerned mode can severely affect other modes. Therefore, to choose a feedback signal which has more information about interarea modes and at the same time, less information about other modes, geometric measure of observability (GMO) is conducted. Finally, the effectiveness of the proposed methodology is validated on TCSC integrated four-machine, eleven-bus system.
Kundan Kumar, Abhineet Prakash, Priya Singh, and S. K. Parida
IEEE
In the interconnected power system, low-frequency inter-area oscillation is a critical problem. Many studies are being conducted to dampen these inter-area oscillations. Flexible AC transmission system (FACTS) devices are now available to efficiently dampen these oscillations along with the enhancement of the system stability. Hence, in this paper, we introduced a novel static var compensator (SVC) based wide area damping controller (WADC) to damp the inter-area oscillation of the power system. For this, first, the critical inter-area mode of the system is obtained by linearizing the system at an equilibrium point using the eigenvalue analysis method, and then for selecting a proper wide-area feedback signal, the geometric approach is adopted. The proposed controller's parameters are then tuned by the meta-heuristic particle swarm optimization (PSO) technique to obtain the reference damping ratio of the critical mode. The feasibility test of this proposed WADC is done on the benchmark 4-machine 11-bus, two area power system. The simulated results show the efficacy of the proposed SVC based WADC.
Kundan Kumar, Abhineet Prakash, and S. K. Parida
IEEE
This paper deals with the three-area power system load frequency control (LFC), comprises of thermal generation including reheat turbines. A cascade proportional integral derivative (PID) and fractional order proportional derivative (FOPD) i.e. PID-FOPD controller is proposed and analysed for LFC mechanism. Here cascading and fractional order mechanism will increase the degree of freedom of the proposed controller. Furthermore, interline power flow controller (IPFC) in combination with redox flow battery (RFB) ensures more improvement in system stability. Here, integral square error (ISE) is considered as performance index (PI) and a meta-heuristic sine cosine algorithm (SCA) is executed to optimize the controller parameters. The simulation results with MATLAB/SIMULINK® toolbox illustrates the advantage of the proposed controller over classical controllers for small load perturbation (SLP) and random load perturbation (RLP) in three-area power system. Lastly, sensitivity is checked by varying system parameters, which demonstrates the robustness PID-FOPD controller.
Kundan Kumar, Abhineet Prakash, S. K. Parida, Saibal Ghosh, and Chandan Kumar
IEEE
A wide range of events can cause oscillations in power systems. Most oscillations are dampened by the system, but a few oscillations may remain undamped, causing the system to collapse. As a result, in the history of modern power system operation and control, low frequency oscillations (LFOs) investigation is necessary. This paper explains the small signal stability analysis of eastern regional (ER) grid neglecting the impact of other regional grids of India. The modal analysis is performed to know the LFO modes in ER grid system. The coordinated tuning of automatic voltage regulators (AVRs) and power system stabilizers (PSSs) have been carried out to damp out these LFO modes and provide required stability margin. The modes those are excited during the disturbance having less damping and high amplitude have been studied and discussed. The truncated 102-bus ER grid system of India is considered for this analytical study.
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