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Open AccessArticle

Significant Implication of Optimal Capacitor Placement and Sizing for a Sustainable Electrical Operation in a Building

1
Faculty of Electrical Engineering, Cawangan Terengganu, Universiti Teknologi MARA, Dungun 23000, Terengganu, Malaysia
2
Faculty of Electrical Engineering, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia
3
Public Works Department Malaysia, Cawangan Kejuruteraan Elektrik, Ibu Pejabat JKR Malaysia, Menara Kerja Raya (Blok G), Jalan Sultan Salahuddin, Kuala Lumpur 50480, Malaysia
*
Author to whom correspondence should be addressed.
Sustainability 2020, 12(13), 5399; https://doi.org/10.3390/su12135399
Received: 30 April 2020 / Revised: 23 June 2020 / Accepted: 1 July 2020 / Published: 3 July 2020
(This article belongs to the Special Issue Energy Efficiency and Sustainability in Buildings)
The improvement of energy efficiency plays an important role to ensure sustainable electrical operation in large-scale buildings. In relation to the low-cost electrical components, a capacitor is an electrical component that can be used to sustain or improve the operating performance of an unbalanced electrical system in large-scale buildings so that energy efficiency improvement can be obtained. This is important to overcome the ineffective utilization of energy caused by the occurrence of power losses in an unbalanced electrical system of large-scale buildings. Further improvement of energy efficiency can be obtained by reducing an excessive amount of incoming power through the determination of tap setting for incoming transformer, and this is classified under the concept of conservative voltage regulation (CVR) approach. In order to solve the problem, the optimal capacitor placement and sizing (OCPS) with CVR is introduced as a new approach for energy efficiency improvement while ensuring a sustainable operation in an unbalanced electrical system of large-scale buildings. The proposed technique utilizes the artificial intelligence (AI) based differential evolution particle swarm optimization (DEPSO) technique with the objective function of total cost minimization for the real power losses, real power consumption, and capacitors installation. The effectiveness of the proposed technique to achieve energy efficiency improvement is investigated through a case study of an unbalanced electrical system in a large-scale office building. The significance of the research output is related to its low-cost technology that has the potential for a comprehensive, pragmatic implementation in large-scale buildings, and subsequently, it will significantly accelerate the increase of national agenda in energy efficiency. View Full-Text
Keywords: energy efficiency; sustainable electrical operation; unbalanced electrical system; large-scale building; optimal capacitor placement and sizing; conservative voltage regulation; differential evolution particle swarm optimization energy efficiency; sustainable electrical operation; unbalanced electrical system; large-scale building; optimal capacitor placement and sizing; conservative voltage regulation; differential evolution particle swarm optimization
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MDPI and ACS Style

Abdul Razak, M.A.; Othman, M.M.; Musirin, I.; Yahya, M.A.; Zakaria, Z. Significant Implication of Optimal Capacitor Placement and Sizing for a Sustainable Electrical Operation in a Building. Sustainability 2020, 12, 5399.

AMA Style

Abdul Razak MA, Othman MM, Musirin I, Yahya MA, Zakaria Z. Significant Implication of Optimal Capacitor Placement and Sizing for a Sustainable Electrical Operation in a Building. Sustainability. 2020; 12(13):5399.

Chicago/Turabian Style

Abdul Razak, Muhd A.; Othman, Muhammad M.; Musirin, Ismail; Yahya, Mohd A.; Zakaria, Zilaila. 2020. "Significant Implication of Optimal Capacitor Placement and Sizing for a Sustainable Electrical Operation in a Building" Sustainability 12, no. 13: 5399.

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