Journal Papers

Highlighted Journal Papers:

  1. Y. Xue, X.-P. Zhang, “Reactive Power and AC Voltage Control of LCC HVDC System with Controllable Capacitors,” IEEE Trans. Power Syst., vol. 32, no. 1, pp. 753-764, Jan. 2017.
    10.1109/TPWRS.2016.2557342
    Most popular article (Ranks 1st from Jan 2017 to Sept 2017 except that it ranks 2nd in May 2017)
  2. Z. Yan, X.-P. Zhang, “General Energy Filters for Power Smoothing, Tracking and Processing using Energy Storage,” IEEE Access, vol. PP, no. 99, pp. 1-1, Aug. 2017.
    10.1109/ACCESS.2017.2737547
    Proposed the concept of Energy Quality for Sustainable Energy Development
  3. X. Zhao, Z. Yan, X.-P. Zhang, “A Wind-Wave Farm System With Self-Energy Storage and Smoothed Power Output,” IEEE Access, vol. 4, no. 1, pp. 8634-8642, Nov. 2016.
    10.1109/ACCESS.2016.2631505
    Proposed the integration scheme between wind and wave farm
  4. H. Fu, X.-P. Zhang, “Market Equilibrium in Active Distribution System With μVPPs: A Coevolutionary Approach,” IEEE Access, vol. 5, no. , pp. 8194-8204, Apr. 2017.
    10.1109/ACCESS.2017.2691316
    Proposed the concept of VPPs in Distribution System Operator Framework

Most Popular / Latest Journal Papers:

  1. Z. Yan, X.-P. Zhang, “General Energy Filters for Power Smoothing, Tracking and Processing using Energy Storage,” IEEE Access, vol. PP, no. 99, pp. 1-1, Aug. 2017.
    10.1109/ACCESS.2017.2737547
  2. H. Fu, X.-P. Zhang, “Market Equilibrium in Active Distribution System With μVPPs: A Coevolutionary Approach,” IEEE Access, vol. 5, no. , pp. 8194-8204, Apr. 2017.
    10.1109/ACCESS.2017.2691316
  3. H. Fu, Z. Wu, J. Li, X. P. Zhang and J. Brandt, “A Configurable μVPP With Managed Energy Services: A Malmo Western Harbour Case,” IEEE Power and Energy Technology Systems Journal, vol. 3, no. 4, pp. 166-178, Dec. 2016.
    10.1109/JPETS.2016.2596779
  4. Puyu Wang, Xiao-Ping Zhang, Paul F. Coventry, Ray Zhang, Zhou Li, “Control and protection sequence for recovery and reconfiguration of an offshore integrated MMC multi-terminal HVDC system under DC faults,” International Journal of Electrical Power & Energy Systems, vol.86, pp. 81-92, March 2017
    10.1016/j.ijepes.2016.10.003
  5. X. Zhao, Z. Yan, X.-P. Zhang, “A Wind-Wave Farm System With Self-Energy Storage and Smoothed Power Output,” IEEE Access, vol. 4, no. 1, pp. 8634-8642, Nov. 2016.
    10.1109/ACCESS.2016.2631505
  6. Y. Xue, X.-P. Zhang, “Reactive Power and AC Voltage Control of LCC HVDC System with Controllable Capacitors,” IEEE Trans. Power Syst., vol. 32, no. 1, pp. 753-764, Jan. 2017.
    10.1109/TPWRS.2016.2557342
    Most popular articles among articles published since 1986 (Ranks 1st from Jan 2017 to Apr 2017)
  7. J. Li, X.-P. Zhang, “Small Signal Stability of Fractional Frequency Transmission System with Offshore Wind Farms,” IEEE Trans. Sustain. Energy, vol.7, no.4, pp. 1538 – 1546, Oct. 2016.
    10.1109/TSTE.2016.2552540

  8. Y. Xue, X.-P. Zhang and C. Yang, “Elimination of Commutation Failures of LCC HVDC System with Controllable Capacitors,” IEEE Trans. Power Syst., vol. 31, no. 4, pp. 3289-3299, Jul. 2016.
    10.1109/TPWRS.2015.2491784
    Most popular articles among articles published since 1986 (Ranks 5th in August 2016)
  9. P. Wang, X.-P. Zhang, P. F. Coventry, R. Zhang, “Start-Up Control of an Offshore Integrated MMC MTDC System with Reduced DC Voltage”, IEEE Trans. Power Syst., vol. 31, no. 4, 2016, pp. 2740-2751, Jul. 2016.
    10.1109/TPWRS.2015.2466600
    Most popular articles among articles published since 1986 (Ranks 1st in Sep – Oct 2016)
  10. G. Tang, Z. He, H. Pang, X. Huang, X.-P. Zhang, “Basic topology and key devices of the five-terminal DC grid,” CSEE Journal of Power & Energy Systems, vol. 1, no. 2, pp. 22-35, Jun. 2015.
    10.17775/CSEEJPES.2015.00016
    Most popular articles (Ranks 27th in July 2016)
  11. N. Deng, P. Wang, X.-P. Zhang, G. Tang, J. Cao, “A DC Current Flow Controller for Meshed Modular Multilevel Converter Multiterminal HVDC Grids,” CSEE Journal of Power & Energy Systems, vol. 1, no. 1, pp. 43-51, Mar. 2015.
    10.17775/CSEEJPES.2015.00006
    Most popular articles (Ranks 37th in July 2016)
  12. Z. Wu, X.-P. Zhang, J. Brandt, S.-Y. Zhou, J.-N. Li, “Three Control Approaches for Optimized Energy Flow with HEMS,” IEEE Power and Energy Technology Systems Journal, vol. 2, no. 1, pp. 21-31, Mar. 2015.
    10.1109/JPETS.2015.2409202
    Most popular articles (Ranks 10th in August 2016)
  13. S. Zhou, Z. Wu, J. Li and X.-P. Zhang, “Real-time Energy Control Approach for Smart Home Energy Management System”, Electric Power Components and Systems, vol. 42, no. 3-4, pp. 315-326, Feb. 2014
    10.1080/15325008.2013.862322
    Top 5 most popular articles
  14. F. Wu, X.-P. Zhang, K. Godfrey, P. Ju, “Small Signal Analysis and Optimal Control of a Wind Turbine with Doubly Fed Induction Generator”, IET – Generation, Transmission and Distribution (ISSN Print: 1751-8687; Online: 1751-8695), vol. 1, no. 5, September 2007, pp. 751-760
    10.1049/iet-gtd:20060395
    Most Cited Journal Papers (ranks 1st).

Invited Journal Review Papers/Editorials:

  1. X.-P. Zhang, J. Li and H Fu, “Global Energy Interconnection Dialogue Industry 4.0全球能源互联网对话工业 4.0,” Power System Technology, 2016, vol. 40, no. 6, pp. 1607-1611, Jun. 2016
    DOI: 10.13335/j.1000-3673.pst.2016.06.001
  2. P. Du, N. Lu, J. Wang, X.-P. Zhang, R. Masiello, M. Henderson, “Guest Editorial: Introduction to the special section on energy storage applications for smart grid”, IEEE Transactions on Smart Grid, vol. 5, no. 2, pp. 935 – 936, Mar. 2014
    DOI: 10.1109/TSG.2014.2305312
  3. X.-P. Zhang, “The future direction of smart grid – global power & energy internet, 智能电网的发展方向 —— 全球能源电力互联网” Power & Electrical Engineers(电气与动力工程师杂志), vol. 31, no. 2, 2014, pp. 46-48 (in Chinese)
  4. X.-P. Zhang, R. Belmans,  D. Kirschen,  D. Sun, E. Vaahedi, Y. Xue, “
    Guest Editorial: Introduction to the special section on planning and operation of transmission grid with applications to smart grid& – From concept to implementation”,  IEEE Trans. on Smart Grid, vol. 4 , no. 3, pp. 1619–1620, 2013
    DOI: 10.1109/TSG.2013.2278599
  5. X.-P. Zhang, P. Zeng, “Marine Energy Technology [Sanning the Issue]”, Proc. IEEE vol. 101, no. 4, pp. 862–865, 2013
    DOI: 10.1109/TSG.2013.2278599
  6. F. Wu, P. Ju, X.-P. Zhang, et al, (Invited Article) “Modeling, Control Strategy, and Power Conditioning for Direct-Drive Wave Energy Conversion to Operate With Power Grid,” Proc. IEEE, vol.101, no.4, pp.925-941,April 2013.
    10.1109/JPROC.2012.2235811
  7. X.-P. Zhang, (Journal Cover) “Marine Energy: The Key for the Development of Sustainable Energy Supply,” Proc. IEEE, vol.100, no.1, 2012, pp. 3-5
    10.1109/JPROC.2011.2169509
  8. Selected Journal Papers:

  9. Z. Yan, X.-P. Zhang, “General Energy Filters for Power Smoothing, Tracking and Processing using Energy Storage,” IEEE Access, vol. PP, no. 99, pp. 1-1, Aug. 2017.
    10.1109/ACCESS.2017.2737547
  10. H. Fu, X.-P. Zhang, “Market Equilibrium in Active Distribution System With μVPPs: A Coevolutionary Approach,” IEEE Access, vol. 5, no. , pp. 8194-8204, Apr. 2017.
    10.1109/ACCESS.2017.2691316
  11. X. Zhao, Z. Yan, X.-P. Zhang, “A Wind-Wave Farm System With Self-Energy Storage and Smoothed Power Output,” IEEE Access, vol. 4, no. 1, pp. 8634-8642, Nov. 2016.
    10.1109/ACCESS.2016.2631505
  12. H. Fu, Z. Wu, J. Li, X. P. Zhang and J. Brandt, “A Configurable μVPP With Managed Energy Services: A Malmo Western Harbour Case,” IEEE Power and Energy Technology Systems Journal, vol. 3, no. 4, pp. 166-178, Dec. 2016.
    10.1109/JPETS.2016.2596779
  13. Puyu Wang, Xiao-Ping Zhang, Paul F. Coventry, Ray Zhang, Zhou Li, “Control and protection sequence for recovery and reconfiguration of an offshore integrated MMC multi-terminal HVDC system under DC faults,” International Journal of Electrical Power & Energy Systems, vol.86, pp. 81-92, March 2017
    10.1016/j.ijepes.2016.10.003
  14. Y. Xue, X.-P. Zhang, “Reactive Power and AC Voltage Control of LCC HVDC System with Controllable Capacitors,” IEEE Trans. Power Syst., vol. 32, no. 1, pp. 753-764, Jan. 2017.
    10.1109/TPWRS.2016.2557342
    Most popular articles among articles published since 1986 (Ranks 1st from Jan 2017 to Apr 2017)
  15. J. Li, X.-P. Zhang, “Small Signal Stability of Fractional Frequency Transmission System with Offshore Wind Farms,” IEEE Trans. Sustain. Energy, vol.7, no.4, pp. 1538 – 1546, Oct. 2016.
    10.1109/TSTE.2016.2552540
    Early Access Articles, published on 13th May 2016
  16. N. Deng, P. Wang, X.-P. Zhang, “Small-signal Stability Analysis and Control System Design of a Meshed Multi-terminal High-Voltage Direct Current Grid with a Current Flow Controller,” ELECTR POW COMPO SYS, vol. 44, no.9, 2016, pp.955 – 965.
    10.1080/15325008.2016.1153750
  17. X.-P. Zhang, J. Li, and H. Fu, “The UK Retail Electricity Market Reform and Challenges英国电力零售市场的改革与挑战,” Automation of Electric Power Systems , vol. 40, no. 11, pp. 10-16, 2016. (in Chinese)
    10.7500/AEPS20150508001
  18. X.-P. Zhang, J. Li, and H. Fu, “Global Energy Internet Dialogue Industry 4.0,” Power System Technology, vol. 40, no. 6, pp. 1607-1611, 2016. (in Chinese)
    10.13335/j.1000-3673.pst.2016.06.001
  19. Y. Xue, X.-P. Zhang and C. Yang, “Elimination of Commutation Failures of LCC HVDC System with Controllable Capacitors,” IEEE Trans. Power Syst., vol. 31, no. 4, pp. 3289-3299, Jul. 2016.
    10.1109/TPWRS.2015.2491784
    Most popular articles among articles published since 1986 (Ranks 5th in August 2016)
  20. P. Wang, X.-P. Zhang, P. F. Coventry, R. Zhang, “Start-Up Control of an Offshore Integrated MMC MTDC System with Reduced DC Voltage”, IEEE Trans. Power Syst., vol. 31, no. 4, 2016, pp. 2740-2751, Jul. 2016.
    10.1109/TPWRS.2015.2466600
    Most popular articles among articles published since 1986 (Ranks 1st in September 2016)
  21. J. Deng, C. Li, and X.-P. Zhang, “Coordinated Design of Multiple Robust FACTS Damping Controllers: A BMI-based Sequential Approach with Multi-model Systems”, IEEE Trans. Power Syst., vol. 30, no. 6, pp. 3150 – 3159, Jan. 2015.
    10.1109/TPWRS.2015.2392153
  22. X.-P. Zhang, J. Li and H. Fu, “Distribution Power & Energy Internet: From Virtual Power Plants to Virtual Power Systems,” Proceedings of Chinese Society for Electrical Engineering, vol. 35, no. 14, pp. 3532-3540, Jul. 2015.
    10.13334/j.0258-8013.pcsee.2015.14.007
  23. G. Tang, Z. He, H. Pang, X. Huang, X.-P. Zhang, “Basic topology and key devices of the five-terminal DC grid,” CSEE Journal of Power & Energy Systems, vol. 1, no. 2, pp. 22-35, Jun. 2015.
    10.17775/CSEEJPES.2015.00016
    Most popular articles (Ranks 27th in July 2016)
  24. N. Deng, P. Wang, X.-P. Zhang, G. Tang, J. Cao, “A DC Current Flow Controller for Meshed Modular Multilevel Converter Multiterminal HVDC Grids,” CSEE Journal of Power & Energy Systems, vol. 1, no. 1, pp. 43-51, Mar. 2015.
    10.17775/CSEEJPES.2015.00006
    Most popular articles (Ranks 37th in July 2016)
  25. Z. Wu, X.-P. Zhang, J. Brandt, S.-Y. Zhou, J.-N. Li, “Three Control Approaches for Optimized Energy Flow with HEMS,” IEEE Power and Energy Technology Systems Journal, vol. 2, no. 1, pp. 21-31, Mar. 2015.
    10.1109/JPETS.2015.2409202
    Most popular articles (Ranks 10th in August 2016)
  26. B. Yuan, M. Zhou, G. Li, X.-P. Zhang, “Stochastic Small-Signal Stability of Power Systems with Wind Power Generation,” IEEE Trans. Power Syst. , vol. 30, no. 4, pp. 1680-1689, Jul. 2015.
    10.1109/TPWRS.2014.2353014
  27. J. Deng, X.-P. Zhang, “Robust Damping Control of Power Systems With TCSC: A Multi-Model BMI Approach With H2 Performance”, IEEE Trans. Power Syst., vol. 29, no. 4, pp. 1512–1521, Jul. 2014
    10.1109/TPWRS.2013.2292067
  28. Z. Wu, S. Zhou, J. Li, X.-P. Zhang “Real-time Scheduling of Residential Appliances via Conditional Risk-at-value”, IEEE Trans. on Smart Grid, vol. 5, no. 3, pp.1282–1291, May 2014
    10.1109/TSG.2014.2304961
  29. C. Suazo-Martinez, E. Pereira-Bonvallet, R. Palma-Behnke and X.-P. Zhang, “Impacts of Energy Storage on Short Term Operation Planning Under Centralized Spot Markets,” IEEE Trans. on Smart Grid, vol. 5 , no. 2, pp. 1110–1118, Mar.2014
    10.1109/TSG.2013.2281828
  30. S. Zhou, Z. Wu, J. Li and X.-P. Zhang, “Real-time Energy Control Approach for Smart Home Energy Management System”, Electric Power Components and Systems, vol. 42, no. 3-4, pp. 315-326, Feb. 2014
    10.1080/15325008.2013.862322
    Top 5 most popular articles
  31. Z. Li, X.-P. Zhang and Q.-L. Wan, “Transfer Characteristics of Thyristor Based HVDC Convertor in Subsynchronous and Low Frequency Band,” International Transactions on Electrical Energy Systems, vol. 23, no. 6, pp. 835–845, Sep. 2013
    10.1002/etep.1660
  32. A. Petoussis, X.-P. Zhang, S. Petoussis, and K.R. Godfrey, “Parameterization of Supply Functions in AC Electricity Market Equilibrium Models — Part I: Literature Review and Equilibrium Algorithm” IEEE Trans. Power Syst., vol. 28, no. 2, pp. 650-658, May. 2013.
    10.1109/TPWRS.2012.2214243
  33. A. Petoussis, X.-P. Zhang, S. Petoussis, and K.R. Godfrey, “Parameterization of Supply Functions in AC Electricity Market Equilibrium Models — Part II: Case Studies” IEEE Trans. Power Syst., vol. 28, no. 2, pp. 659-668, May. 2013.
    10.1109/TPWRS.2012.2214244
  34. X. Yang, X.-P. Zhang, S. Zhou, “Coordinated Algorithms for Distributed State Estimation with Synchronized Phasor Measurements” Applied Energy, vol. 96, no. C, pp. 253-260, 2012.
    10.1016/j.apenergy.2011.11.010
  35. G. Li, X.-P. Zhang, “Modeling of Plug-in Hybrid Electric Vehicle Charging Demand in Probabilistic Power Flow Calculations” IEEE Trans. Smart Grid., vol. 3, no. 1, pp. 492-499, Feb. 2012.
    10.1109/TSG.2011.2172643
  36. F. Wu, X. P. Zhang, P. Ju, and M. J. H. Sterling, “Optimal Control for the AWS based Wave Energy Conversion System,” IEEE Trans. Power Syst., vol. 24, no. 4, pp. 1747-1755, Nov. 2009.
    10.1109/TPWRS.2009.2030294
  37. F. Wu, X. P. Zhang, P. Ju and M.J.H. Sterling, “Modeling and Control of AWS based Wave Energy Conversion System Integrated into Power Grid,” IEEE Trans. on Power Syst. , vol. 23, no. 3, pp. 1196-1204, Aug. 2008.
    10.1109/TPWRS.2008.922530
  38. F. Wu, X.-P. Zhang, P. Ju and M.J.H. Sterling, “Decentralized Nonlinear Control of Wind Turbine with Doubly Fed Induction Generator,” IEEE Trans. on Power Syst. , vol. 23, no. 2, pp. 613- 621, May 2008.
    10.1109/TPWRS.2008.920073
  39. S. G. Petoussis, A. G. Petoussis, X.-P. Zhang and K.R. Godfrey,“Impact of the Transformer Tap-Ratio Control on The Electricity Market Equilibrium,“ IEEE Trans. on Power Syst. , vol. 23, no.1, pp. 65-75, Feb. 2008.
    10.1109/TPWRS.2007.913203
  40. F. Wu, X.-P. Zhang, K. Godfrey, P. Ju, “Small Signal Analysis and Optimal Control of a Wind Turbine with Doubly Fed Induction Generator”, IET – Generation, Transmission and Distribution (ISSN Print: 1751-8687; Online: 1751-8695), vol. 1, no. 5, September 2007, pp. 751-760
    10.1049/iet-gtd:20060395
    Most Cited Journal Papers (ranks 1st).
  41. P. Ju, F. Wu, Z.-Y. Shao, X.-P. Zhang, H.-J. Fu, P.-F. Zhang, N.-Q. He, J.-D. Han, “Composite Load Models based on Field Measurements and Their Applications in Dynamic Analysis,” IET Gen., Transm., Distrib. , vol. 1, no. 5, pp. 724-730, Sep. 2007.
    10.1049/iet-gtd:20060430
  42. S. Petoussis, X.-P. Zhang, K. Godfrey, “Electricity Market Equilibrium Analysis based on Nonlinear Interior Point Algorithm with Complementary Constraints,” IET Generation, Transmission & Distribution, vol. 1, no. 4, pp. 603-612, July 2007.
    10.1049/iet-gtd:20050541
  43. X.-P. Zhang, C. Rehtanz, Y. Song, (Invited Article) “A Grid for Tomorrow,” Power Engineer, vol. 20, no. 5, pp. 22-27, Oct.-Nov. 2006.
  44. C.-F. Xue, X.-P. Zhang, K.R. Godfrey, “Design of STATCOM Damping Control with Multiple Operating Points: A Multi-model LMI Approach,” IEE Proceedings – Generation, Transmission and Distribution, vol. 153, no. 4, pp. 375-382, 13 July 2006.
    10.1049/ip-gtd:20050417
  45. X.-P. Zhang, S.G. Petoussis, K.R. Godfrey, “Novel Nonlinear Interior Point Optimal Power Flow (OPF) Method Based on Current Mismatch Formulation,” IEE Proceedings – Generation, Transmission and Distribution, vol. 152, no. 6, pp. 795-805, 4 Nov. 2005.
    10.1049/ip-gtd:20050076
  46. X.-P. Zhang, P. Ju, E.J. Handschin, “Continuation Three-Phase Power Flow: A Tool for Voltage Stability Analysis of Unbalanced Three-Phase Power Systems,” IEEE Transactions on Power Systems, vol. 20, no. 3, pp. 1320-1329, Aug. 2005.
    10.1109/TPWRS.2005.851950
  47. X.-P. Zhang, “Multiterminal Voltage-Sourced Converter Based HVDC Models for Power Flow Analysis”, IEEE Transactions on Power Systems, vol. 18, no. 4, pp.1877-1884, 2004.
    10.1109/TPWRS.2004.836250

  48. X.-P. Zhang, C.-F. Xue, K.R. Godfrey, “Modelling of the Static Synchronous Series Compensator (SSSC) in Three Phase Newton Power Flow”, IEE Proc. – Generation, Transmission and Distribution, vol. 151, no. 4, pp.486-494, 2004.
    10.1049/ip-gtd:20040473

  49. X.-P. Zhang, “Advanced Modeling of the Multi-control Functional Static Synchronous Series Compensator (SSSC) in Newton Power Flow”, IEEE Transactions on Power Systems, vol.18 no. 4, Nov. pp.1410 –1416, 2003.
    10.1109/TPWRS.2003.818690

  50. X.-P. Zhang, “Modelling of the Interline Power Flow Controller and Generalized Unified Power Flow Controller in Newton Power Flow”, IEE Proc. – Generation, Transmission and Distribution, vol. 150, no. 3, pp.268-274, May 2003.
    10.1049/ip-gtd:20030093

  51. X.-P. Zhang, E. Handschin, “Advanced Implementation of the UPFC in A Nonlinear Interior Point OPF”, IEE Proc. – Generation, Transmission and Distribution, vol. 148, no. 5, pp.489-496, September 2001.
    10.1049/ip-gtd:20010476

  52. X.-P. Zhang, E. Handschin, M. Yao, “Modeling of the Generalized Unified Power Flow Controller in A Nonlinear Interior Point OPF,” IEEE Trans. on Power Syst., vol. 16, no. 3, pp.367-373, Aug. 2001.
    10.1109/59.932270
  53. S. Curcic, G. Strbac, X.-P. Zhang, “Effect of Losses in Design of Distribution Circuits,” IEE Proc. – Generation, Transmission and Distribution, vol. 148, no. 4, pp.343-349, Jul. 2001.
    10.1049/ip-gtd:20010359
  54. X.-P. Zhang, E. Handschin, “Frequency-dependent Simple Harmonic Model of Synchronous Machines,” IEEE Power Eng. Review, vol. 20, no. 5, pp.58-60, May 2000.
    10.1109/39.841352
  55. H. Chen, Y. Long, X.-P. Zhang, “More Sophisticated Synchronous Machine Model and the Relevant Harmonic Power Flow Study,” IEE Proc. – Generation, Transmission and Distribution, vol. 146, no. 3, pp.261-268, May 1999.
    10.1049/ip-gtd:19990410
  56. X.-P. Zhang, “Fast Three Phase Load Flow Methods,” IEEE Trans. Power Syst., vol. 11, no. 3, pp.1547-1554, Aug. 1996.
    10.1109/59.535696
  57. X.-P. Zhang, W. Chu and H. Chen, “Decoupled Asymmetrical Three Phase Load Flow Study by Parallel Processing,” IEE Proc. – Generation, Transmission and Distribution, vol. 143, no. 1, pp.61-65, Jan. 1996.
    10.1049/ip-gtd:19960108
  58. X.-P. Zhang, H. Chen, “Analysis and Selection of Transmission Line Models used in Power System Transient Simulations,” Int. J. Elect. Power & Energy Syst., vol. 17, no. 4, pp.239-246, Aug. 1995.
    10.1016/0142-0615(95)00039-S
  59. X.-P. Zhang, H. Chen, “Asymmetrical Three Phase Load Flow based on Symmetrical Component Theory,” IEE Proc. – Generation, Transmission and Distribution, vol. 141, no. 3, pp.248-252, May 1994.
    10.1049/ip-gtd:19949944