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• Journal article
  Bianchini G, Falugi P, Tesi A, Vicino Aet al., 2007,
  , IEEE TRANSACTIONS ON AUTOMATIC CONTROL, Vol: 52, Pages: 514-520, ISSN: 0018-9286
  • Cite
  • Citations: 2
• Journal article
  Jabr R A, Pal B C, 2007,

  A Conic Programming Approach for Static Voltage Stability Analysis in Radial Networks

  , IET Generation Transmission & Distribution, Pages: 203-208

  That the problem of computing the capacity limit of a radial distribution system can be formulated as a second-order cone program is shown. The implications of the conic programming formulation are 2-fold. First, the load capability of the radial system can be obtained using existing efficient implementations of polynomial time interior-point algorithms, thus avoiding the need for running a sequence of load flow solutions. Secondly, the conic objective function yields a voltage stability indicator (SI). This indicator quantifies the maximum percentage by which the current load profile can be uniformly increased before voltage collapse occurs. The proposed method is validated by computing the load capability and voltage SIs of 11 different distribution systems. Comparisons are carried out with five previously published voltage SIs

  • Abstract
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• Journal article
  Astolfi A, Karagiannis D, Ortega R, 2007,

  Stabilization of uncertain nonlinear systems via Immersion and Invariance

  , European Journal of Control, Vol: 13, Pages: 204-220
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• Journal article
  Astolfi A, 2007,
  , IEEE TRANSACTIONS ON AUTOMATIC CONTROL, Vol: 52, Pages: 289-293, ISSN: 0018-9286
  • Cite
  • Citations: 4
• Journal article
  Gross R, Heptonstall P, Leach M, Anderson D, Green TC, Skea Jet al., 2007,
  , Proceedings of the Institution of Civil Engineers - Energy, Vol: 160, Pages: 31-41

  This paper reviews the key issues and findings of the UK Energy Research Centre report on the costs and impacts of intermittent or variable renewable electricity-generating technologies. The relevant principles of managing electricity networks are examined and aspects that change when significant intermittent generation is added are analysed.The impacts and costs of intermittent generators can be quantified only in the context of the characteristics of the system of which they form part. The principal reasons why these impacts differ from one system to another are examined and explained. The evidence for likely impactsand costs in the UK, at intermittent penetration levels up to 20% of total electricity supplied, is analysed. The two main categories of impact are on system balancing and system reliability, and costs are quantified for these factors.Estimates are in the range of an additional £2–3/MWh for system balancing and £3–5/MWh for system reliability.

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• Conference paper
  Astolfi A, Karagiannis D, Orgtega R, 2007,
  , Pages: 204-220, ISSN: 0947-3580

  This paper presents a method for designing asymptotically stabilising and adaptive convtrol laws for uncertain nonlinear systems. The method relies upon the notions of system immersion and manifold invariance and, in principle, does not require the knowledge of a (control) Lyapunov function. The construction of the stabilising control laws resembles the procedure used in nonlinear regulator theory to derive the (invariant) output-zeroing manifold and its friend, and is well suited, for instance, in situations where we know a stabilising controller of a nominal reduced-order model, which we would like to robustify with respect to higher-order dynamics. In adaptive control problems the method yields stabilising schemes that counter the effect of the uncertain parameters adopting a robustness perspective. This is in contrast with most existing adaptive designs that (relying on certain matching conditions) treat these terms as disturbances to be rejected. The construction does not invoke certainty equivalence, nor requires a linear parameterisation. Furthermore, viewed from a Lyapunov perspective, it provides a procedure to add cross terms between the parameter estimates and the plant states. To illustrate the concepts presented in this paper we introduce several academic and physical examples, including a mechanical system with flexibility modes, an electromechanical system with parasitic actuator dynamics, and an adaptive, nonlinearly parameterised, visual servoing problem. © 2007 EUCA.

  • Abstract
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  • Citations: 11
• Journal article
  Djapic P, Ramsay C, Pudjianto D, Strbac G, Mutale J, Jenkins N, Allan Ret al., 2007,
  , IEEE POWER & ENERGY MAGAZINE, Vol: 5, Pages: 68-77, ISSN: 1540-7977
  • Cite
  • Citations: 65
• Journal article
  Goulart PJ, Kerrigan EC, 2007,
  , INTERNATIONAL JOURNAL OF CONTROL, Vol: 80, Pages: 8-20, ISSN: 0020-7179
  • Cite
  • Citations: 43
• Book chapter
  Viola G, Ortega R, Banavar R, Acosta J A, Astolfi Aet al., 2007,

  Some Remarks on Interconnection and Damping Assignment Passivity Based Control of Mechanical Systems

  , Taming Heterogeneity and Complexity of Embedded Control, Editors: Lamnabhi-Lagarrigue, Laghrouche, Loria, Panteley, Publisher: Hermes
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• Journal article
  Liu X, Hui SYR, 2007,
  , IEEE TRANSACTIONS ON POWER ELECTRONICS, Vol: 22, Pages: 21-29, ISSN: 0885-8993
  • Cite
  • Citations: 70
• Journal article
  Zolotas AC, Chaudhuri B, Jaimoukha IM, Korba Pet al., 2007,

  A study on LQG/LTR control for damping inter-area oscillations in power systems

  , IEEE Transactions on Control Systems Technology, Vol: 15, Pages: 151-160, ISSN: 1063-6536
  • Cite
• Book chapter
  Casagrande D, Astolfi A, Parisini T, 2007,

  Switching-based Lyapunov Function and the Stabilization of a Class of Non-holonomic Systems

  , Hybrid systems: computation and control 2007, Publisher: Springer Verlag
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• Journal article
  Angeli D, Astolfi A, 2007,
  , SYSTEMS & CONTROL LETTERS, Vol: 56, Pages: 87-91, ISSN: 0167-6911
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  • Citations: 67
• Book chapter
  Casagrande D, Astolfi A, Parisini T, 2007,

  Achieving stability in non-holonomic systems by means of switched control laws

  , Taming Heterogeneity and Complexity of Embedded Control, Editors: Lamnabhi-Lagarrigue, Laghrouche, Loria, Panteley, Lamnabhi-Lagarrigue, Laghrouche, Loria, Panteley, Publisher: Hermes
  • Cite
• Journal article
  Majumder R, Chaudhuri B, Pal B C, 2007,

  Implementation and test results of a wide area measurementbased controller for damping inter-area oscillations considering

  , IET Generation, Transmission & Distribution, Vol: 1, Pages: 1-7
  • Cite
• Book chapter
  Angeli D, De Leenheer P, Sontag ED, 2007,

  A Petri net approach to persistence analysis in chemical reaction networks

  , BIOLOGY AND CONTROL THEORY: CURRENT CHALLENGES, LECTURE NOTES IN CONTROL AND INFORMATION SCIENCES, Vol. 357, Pages: 181-216, ISBN: 978-3-540-71987-8
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• Journal article
  Anaya-Lara O, Hughes F M, Jenkins N, Strbac Get al., 2007,

  Provision of a synchronising power characteristics on DFIG-based wind farms

  , IET Proceedings Generation, Transmission and Distribution, Vol: 1, Pages: 162-169
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• Journal article
  Majumder R, Chaudhuri B, Pal BC, 2007,
  , IET GENER TRANSM DIS, Vol: 1, Pages: 1-7

  The paper describes the implementation of a centralised control-design scheme in a real-time laboratory-based dynamic simulator. A centralised multivariable-control algorithm is designed employing remote feedback signals considering delay in signal transmission. The transmitted signals can be used for multiple-swing-mode damping using a single controller. Such an algorithm is numerically intensive owing to the high controller size and the predictor that takes care of the delay in signal transmission. The performance of the proposed controller is demonstrated by practical implementation using a rapid-prototyping controller mounted on a PC-ATX. Results of the experimental tests are shown for a detailed model of the power system implemented using Linux PC-based multiprocessor technology.

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• Conference paper
  Barnes M, Ventakaramanan G, Kondoh J, Lasseter R, Asano H, Hatziargyriou N, Oyarzabal J, Green Tet al., 2007,

  Real-world Microgrids - An overview

  , IEEE International Conference on System of Systems Engineering, Publisher: IEEE, Pages: 37-+
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  • Citations: 158
• Conference paper
  Payyala SL, Green TC, 2007,

  An estimation of economic benefit values of DG

  , IEEE-Power-Engineering-Society General Meeting, Publisher: IEEE, Pages: 3794-3801, ISSN: 1932-5517
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• Conference paper
  Mayne DQ, Kerrigan EC, 2007,

  Tube-based robust nonlinear model predictive control

  , IFAC Symposium on Nonlinear Control Systems (NOLCOS 2007)
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• Journal article
  Su YP, Liu X, Hui SYR, 2007,
  , 2007 IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-6, Pages: 3022-3028, ISSN: 0275-9306
  • Cite
  • Citations: 2
• Journal article
  Liu X, Lee CK, Hui SYR, 2007,
  , 2007 IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-6, Pages: 1528-1534, ISSN: 0275-9306
  • Cite
  • Citations: 2
• Journal article
  Tam PW, Chung HSH, Hui SYR, 2007,
  , 2007 IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-6, Pages: 2279-2286, ISSN: 0275-9306
  • Cite
• Journal article
  Chan PKW, Chung HSH, Hui SYR, 2007,
  , 2007 IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-6, Pages: 1733-1739, ISSN: 0275-9306
  • Cite
  • Citations: 1
• Conference paper
  Mutale J, Strbac G, Pudjianto D, 2007,

  Methodology for cost reflective pricing of distribution networks with distributed generation

  , IEEE-Power-Engineering-Society General Meeting, Publisher: IEEE, Pages: 3707-3711, ISSN: 1932-5517
  • Cite
  • Citations: 1
• Conference paper
  Ferrari RMG, Parisini T, Polycarpou MM, 2007,

  A fault detection and isolation scheme for nonlinear uncertain discrete-time sytems

  , 46th IEEE Conference on Decision and Control, Publisher: IEEE, Pages: 5150-+, ISSN: 0743-1546
  • Cite
  • Citations: 3
• Conference paper
  Casagrande D, Astolfi A, Parisini T, 2007,

  Switching-based lyapunov function and the stabilization of a class of non-holonomic systems

  , 10th International Conference on Hybrid Systems - Computation and Control, Publisher: SPRINGER-VERLAG BERLIN, Pages: 664-+, ISSN: 0302-9743
  • Cite
  • Citations: 1
• Conference paper
  Casagrande D, Astolfi A, Parisini T, 2007,

  A globally stabilizing time-switching control strategy for an underactuated rigid body

  , 26th American Control Conference, Publisher: IEEE, Pages: 2548-+, ISSN: 0743-1619
  • Cite
• Conference paper
  Ferrari RMG, Parisini T, Polycarpou MM, 2007,

  Distributed fault diagnosis with overlapping decompositions and consensus filters

  , 26th American Control Conference, Publisher: IEEE, Pages: 4884-+, ISSN: 0743-1619
  • Cite
  • Citations: 10

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