Abstract
This work aims at exploring the effects of the interconnection between isolated electric power systems upon some important aspects such as enhancing reliability levels along with reducing installation and operation costs. To discern the advantages associated with this study, the developed methodology has been applied to three existing power systems in the northern region of the Kingdom of Saudi Arabia presently within the concession domain of the Saudi Electric Company (SEC). These systems have been established to meet the present loads and to withstand future electrical demands for a period of time before additional generation and transmission reinforcements are needed. In this work, reliability measures have been utilized to determine the period that these systems can fulfill the present and future loads without affecting the reliability levels and the threshold that an additional capacity should be added to maintain those required reliability levels. In application to the reliability criteria, technical, operational and economic advantages can be realized, i.e., higher reliability levels and lower installation and operation costs after the proposed interconnection between these selected isolated power systems take place.
Highlights
Interconnection of electrical power systems is an effective means of enhancing the overall system reliability and reducing its operating reserve
This work aims at exploring the effects of the interconnection between isolated electric power systems upon some important aspects such as enhancing reliability levels along with reducing installation and operation costs
To discern the advantages associated with this study, the developed methodology has been applied to three existing power systems in the northern region of the Kingdom of Saudi Arabia presently within the concession domain of the Saudi Electric Company (SEC)
Summary
Interconnection of electrical power systems is an effective means of enhancing the overall system reliability and reducing its operating reserve. In power system reliability evaluation, the most widely used reliability index by electric companies is the Loss of Load Expectation (LOLE) This index can be used for specifying the appropriate timing for future capacity additions as well as for comparing between various alternative expansion plans. This research will, demonstrate other complementary reliability indices that are—to the author’s knowledge— given less consideration in present realistic and applied cases. These indices are the “Expected Demand Not Served (EDNS)”, the “Expected Energy Not Served (EENS)” and the “Energy Index of Reliability (EIR)”
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