A generic operations framework for discos in retail electricity markets

A generic operations framework for a distribution company (disco) operating in a competitive electricity market environment is presented in this paper. The operations framework is a two-stage hierarchical model in which the first deals with disco's activities in the day-ahead stage, the Day Ahead Operations Model (DAOM). The second deals with disco's activities in real-time and is termed Real-Time Operations Model (RTOM). The DAOM determines the disco's operational decisions on grid purchase, scheduling of distributed generation (DG) units owned by it, and contracting for interruptible load. These decisions are imposed as boundary constraints in the RTOM and the disco seeks to minimize its short-term costs keeping in mind its day-ahead decisions. A case-study is presented considering the well-known 33-bus distribution system and three different scenarios are constructed to analyze the disco's actions and decision-making in this context.

[1]  D. J. Atkinson,et al.  Use of Load Control to Regulate Voltage on Distribution Networks with Embedded Generation , 2002, IEEE Power Engineering Review.

[2]  D. Kirschen,et al.  Fundamentals of power system economics , 1991 .

[3]  W. El-khattam,et al.  Optimal investment planning for distributed generation in a competitive electricity market , 2004, IEEE Transactions on Power Systems.

[4]  Zuyi Li,et al.  A Multiperiod Energy Acquisition Model for a Distribution Company With Distributed Generation and Interruptible Load , 2007, IEEE Transactions on Power Systems.

[5]  P. Sotkiewicz,et al.  Nodal pricing for distribution networks: efficient pricing for efficiency enhancing DG , 2006, IEEE Transactions on Power Systems.

[6]  Felix F. Wu,et al.  Network reconfiguration in distribution systems for loss reduction and load balancing , 1989 .

[7]  Benjamin F. Hobbs,et al.  A Nested Benders Decomposition Approach to Locating Distributed Generation in a Multiarea Power System , 2003 .

[8]  A. Jofré,et al.  A distribution company energy acquisition market model with integration of distributed generation and load curtailment options , 2005, IEEE Transactions on Power Systems.

[9]  Kankar Bhattacharya,et al.  Competitive framework for procurement of interruptible load services , 2003 .

[10]  M. Matos,et al.  Loss allocation in distribution networks with embedded generation , 2004, IEEE Transactions on Power Systems.

[11]  M.T.P. de Leao,et al.  Uniform marginal pricing for the remuneration of distribution networks , 2005, IEEE Transactions on Power Systems.

[12]  M.E. Baran,et al.  A Multiagent-Based Dispatching Scheme for Distributed Generators for Voltage Support on Distribution Feeders , 2007, IEEE Transactions on Power Systems.

[13]  G.A. Jimenez-Estevez,et al.  A Competitive Market Integration Model for Distributed Generation , 2007, IEEE Transactions on Power Systems.

[14]  G. Joos,et al.  Customer-Owned Back-Up Generators for Energy Management by Distribution Utilities , 2007, IEEE Transactions on Power Systems.

[15]  Goran Strbac,et al.  Fundamentals of Power System Economics: Kirschen/Power System Economics , 2005 .

[16]  Mohammad Shahidehpour,et al.  Market operations in electric power systems , 2002 .

[17]  K.N. Miu,et al.  A network-based distributed slack bus model for DGs in unbalanced power flow studies , 2005, IEEE Transactions on Power Systems.