Abstract
This paper presents a comprehensive framework model of a distribution company with security and reliability considerations. A probabilistic wind farm, which is a renewable energy resource, is modeled in this work. The requirement energy of distribution company can be either provided by distribution company′s own distributed generations or purchased from power market. Two reliability indices as well as DC load flow equations are also considered in order to satisfy reliability and security constraints, respectively. Since allocating proper spinning reserve improves reliability level, the amount of spinning reserve will be calculated iteratively. In this work, all equations are expressed in a linear fashion in which unit commitment formulation depends on binary variables associated with only on/off of units. The benders decomposition method is used to solve security‐based unit commitment.
Highlights
Electrical energy sector has been affected by two main factors over the past two decades
This paper presents a comprehensive framework model of a distribution company with security and reliability considerations
The restructuring process of the energy sector has stimulated the introduction of new agents and products, and the unbundling of traditional DISCO into technical and commercial tasks, including the provision of ancillary services 2
Summary
Electrical energy sector has been affected by two main factors over the past two decades. A day-ahead energy acquisition model for a DISCO in a pool market in the presence of financial bilateral contracts is presented in 3. Both investor and utility-owned DG units as well as interruptible load IL options are considered in the model. Over the last four decades, numerous techniques and methods have been developed to calculate reserve-constrained unit commitment 8, 9 Both deterministic and probabilistic approaches can and are used to establish spinning reserve requirements. In 13 , a reliability-based unit commitment in restructured power systems with high penetration of wind farms is proposed. A reliability-based unit commitment in a distribution company is proposed. A review of Benders Decomposition procedure is proposed in the appendix
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