Imperial College London

ProfessorBikashPal

Faculty of EngineeringDepartment of Electrical and Electronic Engineering

Professor of Power Systems
 
 
 
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Contact

 

+44 (0)20 7594 6172b.pal Website CV

 
 
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Assistant

 

Miss Guler Eroglu +44 (0)20 7594 6170

 
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Location

 

1104Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

171 results found

Anagnostou G, Pal BC, 2018, Derivative-Free Kalman Filtering Based Approaches to Dynamic State Estimation for Power Systems With Unknown Inputs, IEEE TRANSACTIONS ON POWER SYSTEMS, Vol: 33, Pages: 116-130, ISSN: 0885-8950

JOURNAL ARTICLE

Cai L, Thornhill NF, Kuenzel S, Pal BCet al., 2018, Wide-Area Monitoring of Power Systems Using Principal Component Analysis and <formula><tex>$k$</tex></formula>-Nearest Neighbor Analysis, IEEE Transactions on Power Systems, ISSN: 0885-8950

CCBY Wide-area monitoring of power systems is important for system security and stability. It involves the detection and localization of power system disturbances. However, the oscillatory trends and noise in electrical measurements often mask disturbances, making wide-area monitoring a challenging task. This paper presents a wide-area monitoring method to detect and locate power system disturbances by combining multivariate analysis known as Principal Component Analysis (PCA) and time series analysis known as k-Nearest Neighbor ( < formula > < tex > ${k}$ < /tex > < /formula > NN) analysis. Advantages of this method are that it can not only analyze a large number of wide-area variables in real time but also can reduce the masking effect of the oscillatory trends and noise on disturbances. Case studies conducted on data from a four-variable numerical model and the New England power system model demonstrate the effectiveness of this method.

JOURNAL ARTICLE

Jabr RA, D┼żafic I, Pal BC, 2018, Compensation in complex variables for microgrid power flow, IEEE Transactions on Power Systems, ISSN: 0885-8950

The solution of the distribution network power flow in practical applications is based either on the forward-backward sweep method for radial networks, or the current injection method for meshed networks. While the power flow in microgrids that operate in grid-connected mode could be resolved using the above approaches, their operation in island mode would require simulating local generation droop controllers for sharing the complex power load and network loss amongst the generators. This letter proposes a complex power compensation approach, which is based on Wirtinger calculus, for extending the applicability of practical distribution power flow methods to microgrids operating in island mode. Supporting numerical results are reported on microgrids with up to 3139 nodes.

JOURNAL ARTICLE

Ma S, Geng H, Liu L, Yang G, Pal BCet al., 2018, Grid-Synchronization Stability Improvement of Large Scale Wind Farm During Severe Grid Fault, IEEE TRANSACTIONS ON POWER SYSTEMS, Vol: 33, Pages: 216-226, ISSN: 0885-8950

JOURNAL ARTICLE

Ma S, Geng H, Yang G, Pal BCet al., 2018, Clustering based Coordinated Control of Large Scale Wind Farm for Power System Frequency Support, IEEE Transactions on Sustainable Energy, ISSN: 1949-3029

IEEE This paper proposed a frequency support control scheme for large scale wind farm(WF) by considering distributed layout of wind turbines(WT) and wake effects inside the WF. The frequency support of WF is formulated as optimization problems. A novel clustering based optimization method is proposed to coordinate all the WTs so that the whole WF can work at the optimal operating states. In large scale WF, number of WTs is numerous. With the proposed method, the WTs are firstly clustered into groups according to their wind profiles. By dispatching the same control commands to the WTs belonging to the same group, each group can be further seen as one single WT. As a result, the number of the WTs and control variables reduces significantly and hence the optimization problems are highly simplified. A case study is carried out to verify the effectiveness of the proposed method.

JOURNAL ARTICLE

Majumdar A, Agalgaonkar YP, Pal BC, Gottschalg Ret al., 2018, Centralized Volt-Var Optimization Strategy Considering Malicious Attack on Distributed Energy Resources Control, IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, Vol: 9, Pages: 148-156, ISSN: 1949-3029

JOURNAL ARTICLE

Singh AK, Pal BC, 2018, Decentralized Nonlinear Control for Power Systems Using Normal Forms and Detailed Models, IEEE TRANSACTIONS ON POWER SYSTEMS, Vol: 33, Pages: 1160-1172, ISSN: 0885-8950

JOURNAL ARTICLE

Singh AK, Pal BC, 2018, Decentralized Robust Dynamic State Estimation in Power Systems Using Instrument Transformers, IEEE TRANSACTIONS ON SIGNAL PROCESSING, Vol: 66, Pages: 1541-1550, ISSN: 1053-587X

JOURNAL ARTICLE

Anagnostou G, Boem F, Kuenzel S, Pal BC, Parisini Tet al., 2017, Observer-based Anomaly Detection of Synchronous Generators for Power Systems Monitoring, IEEE Transactions on Power Systems, ISSN: 0885-8950

CCBY This paper proposes a rigorous anomaly detection scheme, developed to spot power system operational changes which are inconsistent with the models used by operators. This novel technique relies on a state observer, with guaranteed estimation error convergence, suitable to be implemented in real time, and it has been developed to fully address this important issue in power systems. The proposed method is fitted to the highly nonlinear characteristics of the network, with the states of the nonlinear generator model being estimated by means of a linear time-varying estimation scheme. Given the reliance of the existing dynamic security assessment tools in industry on nominal power system models, the suggested methodology addresses cases when there is deviation from assumed system dynamics, enhancing operators' awareness of system operation. It is based on a decision scheme relying on analytical computation of thresholds, not involving empirical criteria which are likely to introduce inaccurate outcomes. Since false-alarms are guaranteed to be absent, the proposed technique turns out to be very useful for system monitoring and control. The effectiveness of the anomaly detection algorithm is shown through detailed realistic case studies in two power system models.

JOURNAL ARTICLE

Basak S, Chakraborty C, Pal BC, 2017, A New Configuration of Dual Stator Induction Generator Employing Series and Shunt Capacitors, IEEE Transactions on Energy Conversion, Pages: 1-1, ISSN: 0885-8969

JOURNAL ARTICLE

Battistelli C, Agalgaonkar YP, Pal BC, 2017, Probabilistic Dispatch of Remote Hybrid Microgrids Including Battery Storage and Load Management, IEEE TRANSACTIONS ON SMART GRID, Vol: 8, Pages: 1305-1317, ISSN: 1949-3053

JOURNAL ARTICLE

Bhui P, Senroy N, Singh AK, Pal BCet al., 2017, Estimation of Inherent Governor Dead-Band and Regulation Using Unscented Kalman Filter, IEEE Transactions on Power Systems, Pages: 1-1, ISSN: 0885-8950

JOURNAL ARTICLE

Cai L, Thornhill NF, Kuenzel S, Pal BCet al., 2017, Real-Time Detection of Power System Disturbances Based on k-Nearest Neighbor Analysis, IEEE ACCESS, Vol: 5, Pages: 5631-5639, ISSN: 2169-3536

JOURNAL ARTICLE

Cai L, Thornhill NF, Pal BC, 2017, Multivariate Detection of Power System Disturbances Based on Fourth Order Moment and Singular Value Decomposition, IEEE TRANSACTIONS ON POWER SYSTEMS, Vol: 32, Pages: 4289-4297, ISSN: 0885-8950

JOURNAL ARTICLE

Canizares C, Fernandes T, Geraldi E, Gerin-Lajoie L, Gibbard M, Hiskens I, Kersulis J, Kuiava R, Lima L, DeMarco F, Martins N, Pal BC, Piardi A, Ramos R, dos Santos J, Silva D, Singh AK, Tamimi B, Vowles Det al., 2017, Benchmark Models for the Analysis and Control of Small-Signal Oscillatory Dynamics in Power Systems, IEEE TRANSACTIONS ON POWER SYSTEMS, Vol: 32, Pages: 715-722, ISSN: 0885-8950

JOURNAL ARTICLE

Dzafic I, Jabr RA, Huseinagic I, Pal BCet al., 2017, Multi-Phase State Estimation Featuring Industrial-Grade Distribution Network Models, IEEE TRANSACTIONS ON SMART GRID, Vol: 8, Pages: 609-618, ISSN: 1949-3053

JOURNAL ARTICLE

Kunjumuhammed LP, Pal BC, Gupta R, Dyke KJet al., 2017, Stability Analysis of a PMSG-Based Large Offshore Wind Farm Connected to a VSC-HVDC, IEEE TRANSACTIONS ON ENERGY CONVERSION, Vol: 32, Pages: 1166-1176, ISSN: 0885-8969

JOURNAL ARTICLE

Kunjumuhammed LP, Pal BC, Oates C, Dyke KJet al., 2017, The Adequacy of the Present Practice in Dynamic Aggregated Modeling of Wind Farm Systems, IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, Vol: 8, Pages: 23-32, ISSN: 1949-3029

JOURNAL ARTICLE

Lessa Assis TM, Kuenzel S, Pal BC, 2017, Impact of Multi-terminal HVDC Grids on Enhancing Dynamic Power Transfer Capability, IEEE TRANSACTIONS ON POWER SYSTEMS, Vol: 32, Pages: 2652-2662, ISSN: 0885-8950

JOURNAL ARTICLE

Nanchian S, Majumdar A, Pal BC, 2017, Three-Phase State Estimation Using Hybrid Particle Swarm Optimization, IEEE TRANSACTIONS ON SMART GRID, Vol: 8, Pages: 1035-1045, ISSN: 1949-3053

JOURNAL ARTICLE

Nanchian S, Majumdar A, Pal BC, 2017, Ordinal Optimization Technique for Three-Phase Distribution Network State Estimation Including Discrete Variables, IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, Vol: 8, Pages: 1528-1535, ISSN: 1949-3029

JOURNAL ARTICLE

Nduka O, Pal BC, 2017, Quantitative Evaluation Of Actual Loss ReductionBenefits Of A Renewable Heavy DG DistributionNetwork, IEEE Transactions on Sustainable Energy, ISSN: 1949-3029

Modern distribution network architectures havegreatly changed due to the increasing proliferation of the networkwith power converters of renewable distributed generators(RDGs) and switching electronic loads. While these RDGs mayoffer benefits to the distribution network operator (DNO) interms of network loss reduction, the quantification of suchbenefits are usually investigated on the basis that harmonicsfrom the power converters are negligible. In this work, theelectrical power losses in a network with significant penetrationof photovoltaics (PVs) is assessed. The harmonics from the powerconditioners of the PVs and network background distortions havebeen taken into account in the analysis. Technical insights fromstudy of practical distribution networks are presented.

JOURNAL ARTICLE

Nduka OS, Pal BC, 2017, Harmonic Domain Modeling of PV System for the Assessment of Grid Integration Impact, IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, Vol: 8, Pages: 1154-1165, ISSN: 1949-3029

JOURNAL ARTICLE

Schneider KP, Mather B, Pal BC, Ten C-W, Shirek G, Zhu H, Fuller J, Pereira JLR, Ochoa L, Araujo L, Duncan R, Stifter M, Paudyal S, McDermott T, Kersting Bet al., 2017, Analytic Considerations and Design Basis for the IEEE Distribution Test Feeders, IEEE Transactions on Power Systems, Pages: 1-1, ISSN: 0885-8950

JOURNAL ARTICLE

Singh AK, Pal BC, 2017, An extended linear quadratic regulator for LTI systems with exogenous inputs, AUTOMATICA, Vol: 76, Pages: 10-16, ISSN: 0005-1098

JOURNAL ARTICLE

Stacchini de Souza JC, Lessa Assis TM, Pal BC, 2017, Data Compression in Smart Distribution Systems via Singular Value Decomposition, IEEE TRANSACTIONS ON SMART GRID, Vol: 8, Pages: 275-284, ISSN: 1949-3053

JOURNAL ARTICLE

Xuan G, Kuenzel STGI, Pal BC, 2017, Optimal wind farm cabling, IEEE Transactions on Sustainable Energy, ISSN: 1949-3029

Wind farm cable length has a direct impact on the project cost, reliability and electrical losses. The optimum cable layout results in a lower unit cost of generating electricity offshore. This paper explores three cabling structures: the string structure, ring structures and multi-loop structure on a 3D seabed. The newly proposed multi-loop structure increases reliability and proves to be most economic when the failure rate and mean time to repair (MTTR) of cables are relatively high. Particle swarm optimization (PSO) is used to find the optimal substation location that minimizes the overall cable distance.

JOURNAL ARTICLE

Ariff MAM, Pal BC, 2016, Adaptive Protection and Control in the Power System for Wide-Area Blackout Prevention, IEEE TRANSACTIONS ON POWER DELIVERY, Vol: 31, Pages: 1815-1825, ISSN: 0885-8977

JOURNAL ARTICLE

Kunjumuhammed LP, Pal BC, Oates C, Dyke KJet al., 2016, Electrical Oscillations in Wind Farm Systems: Analysis and Insight Based on Detailed Modeling, IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, Vol: 7, Pages: 51-62, ISSN: 1949-3029

JOURNAL ARTICLE

Majumdar A, Pal BC, 2016, A Three-Phase State Estimation in Unbalanced Distribution Networks with Switch Modelling, 1st IEEE International Conference on Control, Measurement and Instrumentation (CMI), Publisher: IEEE, Pages: 474-478

CONFERENCE PAPER

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