Abstract
Many underdeveloped countries are facing acute shortage of electric power and short term measures are important to consider to address the problems of power outage, power plant failures, and disaster areas. Distributed generation (DG) is a promising approach for such cases as it allows quick on-site installation and generation of electric power. Injection of DG can improve the system voltage profile and also reduce the system's total power losses. However, the placement and sizing of the DG unit is an optimization problem in the radial distribution system. As a test case, this study examines voltage profile improvement and system power losses for an 11 KV residential feeder at the Abdul Rehman Baba grid station in Pakistan, which is modelled using the Electrical Transient Analyzer Program (ETAP). For various scenarios, several tests are conducted to assess the effects of DG on the distribution system. The results show that proper design considerations of size and location of a DG, to be inserted in to the system, lead to significant reduction in power losses and improvement in voltage profile and thus improvement in the overall efficiency of the power system. The projections of this work can be used to optimize the expansion of a power system and tackling different issues related to voltage profile in distribution sector worldwide.
Highlights
Implications of Distributed Generation Integration with Distribution SystemDistributed generation (DG) injection has a variety of effects on the electrical power system, it remains an appealing option for future power systems due to its plug-and-play nature, flexibility of operation, and other benefits. e main feature of connecting DG is the enhancement of overall efficiency of the electrical power system without making significant changes to the existing infrastructure. e transmission loss of electricity in its transport over long distances is usually from 4.20 to 8.90% of the transmitted electricity due to different factors such as reactive nature of various components, connection losses, bulk resistance, etc
Muhammad Aamir Aman,1 Xin Cheng Ren,2 Wajahat Ullah Khan Tareen,3 Muhammad Abbas Khan,4 Muhammad Rizwan Anjum,5 Anas M
Several tests are conducted to assess the effects of Distributed generation (DG) on the distribution system. e results show that proper design considerations of size and location of a DG, to be inserted in to the system, lead to significant reduction in power losses and improvement in voltage profile and improvement in the overall efficiency of the power system. e projections of this work can be used to optimize the expansion of a power system and tackling different issues related to voltage profile in distribution sector worldwide
Summary
DG injection has a variety of effects on the electrical power system, it remains an appealing option for future power systems due to its plug-and-play nature, flexibility of operation, and other benefits. e main feature of connecting DG is the enhancement of overall efficiency of the electrical power system without making significant changes to the existing infrastructure. e transmission loss of electricity in its transport over long distances is usually from 4.20 to 8.90% of the transmitted electricity due to different factors such as reactive nature of various components, connection losses, bulk resistance, etc. Where voltage dips and blackouts are an issue for service providers, DG injection can help reduce power losses and improve voltage profile. Injection of DG can reduce power losses in areas where service providers are concerned about voltage dips and blackouts. If the DG unit is not injected in a suitable place, it could provoke a negative impact on voltage profile, power losses, and operation of the system. For this purpose, different optimization methods are taken into consideration to settle the optimal location and size of the distributed generation unit to upgrade the performance of the distribution system [17,18,19,20]. Because power losses differ depending on the type of DG employed and the location of DG installation, an overall optimization is obtained, which is discussed mathematically
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