Karen Miu


DEGREES: PhD EE 1998, Cornell University
OFFICE: Bossone 413a
PHONE: 215-895-6207
EMAIL: miu @ ece.drexel.edu

Research keywords: power systems, distribution networks, distribution automation, optimization, system analysis


Main research interests are in power distribution system analysis, automation and control. The rapid restructuring of electric power utilities and the availability of customer choice introduces a new planning and operating environment for the nation`s power system infrastructure. From the standpoint of power distribution systems, this new environment pushes distribution automation to the forefront as distribution systems are the first and most prominent link customers have to the power system. My research interests in this area include:

  • first, the identification of data requirements necessary for end-use applications such as three-phase power flow and service restoration;
  • second, determination of meter placements in distribution networks;
  • third, the development of accurate load models to represent the distribution loads which in turn can be incorporated into load forecasting techniques;
  • fourth, with specific interest in service-oriented functions such as service restoration, maintenance planning, reliability improvement, etc., the development of problem formulations and effective solution algorithms to accurately represent the behavior of the electrical system and to reflect the new operating environment which must consider appropriate costs and avoided costs.

Sample Publications

V. Cecchi, X. Yang, K. Miu, C. Nwankpa, “Instrumentation and Measurement of a Power Distribution System Laboratory for Meter Placement and Network Reconfiguration Studies”, IEEE Transactions on Instrumentation and Measurement, Vol. 56, Iss. 4, Aug. 2007, pp.1224 – 1230.

S. Tong and K. N. Miu, “Slack Bus Modeling and Cost Analysis of Distributed Generator Installations,” ASCE Journal of Energy Engineering, Vol. 133, Iss. 3, Sept. 2007, pp. 111-120.

X. Yang, S. Carullo, K. N. Miu, C. Nwankpa, “Reconfigurable Distribution Automation and Control Laboratory: Multi-phase, Radial Power Flow Experiment,” IEEE Transactions on Power Systems, Vol. 20, No. 3, Aug. 2005, pp. 1207-1214.

S. Tong and K. N. Miu, “A Network-Based Distributed Slack Bus Model for DGs in Unbalanced Power Flow Studies”, IEEE Transactions on Power Systems, Vol. 20, No. 2, May 2005, pp. 835-842

J. Wan and K. N. Miu, “Weighted Least Squares Methods for Load Estimation in Distribution Networks”, IEEE Transactions on Power Systems, Vol. 18, No. 4, Nov. 2003, pp. 1338 – 1345.

Y. Mao and K. N. Miu, “Switch Placement to Improve System Reliability for Radial Distribution Systems with Distributed Generation”, IEEE Transactions on Power Systems, Vol. 18, No. 4 Nov. 2003 , pp. 1346 – 1352.

R. Stoicescu, K. N. Miu, C. Nwankpa, D. Niebur, X. Yang, “3-phase Converter Models for Unbalanced, Radial Power Flow Studies,” IEEE Transactions on Power Systems, Vol. 17, No. 4, Nov. 2002, pp. 1016-1021.

K. N. Miu and H.-D. Chiang, “Existence, Uniqueness and Monotonic Properties of the Feasible Power Flow Solution for Radial Three-Phase Distribution Networks,” IEEE Transactions on Circuits and Systems, Vol. 47, No. 10, Oct. 2000, pp. 1502-1514.

K. N. Miu, H.-D. Chiang and R. J. McNulty, “Multi-Tier Service Restoration through Network Reconfiguration and Capacitor Control for Large-Scale Radial Distribution Systems,” IEEE Transactions on Power Systems, Vol. 15, No. 3, Aug. 2000, pp. 1001-1007.

K.N. Miu and H.D. Chiang, “Electric Distribution System Load Capacity: Problem Formulation, Solution Algorithm and Numerical Results,” IEEE Transactions on Power Delivery, Vol. 15, No. 1, Jan. 2000, pp.436-442.

K.N. Miu, H.D. Chiang, B. Yuan and G. Darling, “Fast Service Restoration for Large-Scale Distribution Systmes with Priority Customers and Constraints,” IEEE Transactions on Power Systems, Vol. 13, No. 3, Aug. 1998, pp. 789-795.

K.N. Miu, H.D. Chiang and G. Darling, “Capacitor Placement, Replacement and Control in Large-Scale Distribution Systems by a GA-Based Two-Stage Algorithm,” IEEE Transactions on Power Systems, Vol. 12, No. 3, Aug. 1997, pp. 1160-1166.

H.D. Chiang, J.C. Wang, K.N. Miu, “Explicit Loss Formula, Voltage Formula and Current Flow Formula for Large-Scale Unbalanced Distribution Systems,” IEEE Transactions on Power Systems, Vol. 12, No. 3, Aug. 1997, pp. 1061-1067.

Y. Fukuyama, H.D. Chiang, K.N. Miu, “A Parallel Genetic Algorithm for Service Restoration in Electric Power Distribution Systems,” International Journal of Electric Power & Energy Systems, Vol. 18, No. 2, Feb. 1996, pp. 111-119.