Optimal Radial Topology with Phase Balancing in LV Distribution System Considering Energy Loss Reduction: A Case Study in Cambodia

Eth, Oudaya; Vai, Vannak; Bun, Long; Eng, Samphors; Khon, Kimsrornn

doi:10.1109/icecie55199.2022.10000324

Cited by 4 publications

(3 citation statements)

References 17 publications

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“…(3) to propose methods for optimizing energy loss during 24-h by using two approaches: Method 1 (M1), which optimizes power phase balancing at peak load and then applies the load curve, and Method 2 (M2), which optimizes energy loss for power phase balancing during 24 h; (4) to study the impact of CePV and DePV integration in the system; and (5) to evaluate the economic performance of the LVAC distribution network with and without PV integration; (6) to study the reliability of the system by using the autonomous operation of time and energy for PV integration; and (7) to study the environmental indicators of systems that have CO 2 emissions and CO 2 emission reduction.…”

Section: Methodsmentioning

confidence: 99%

“…Many studies relevant to LV distribution system planning and operation are addressed in the literature review. To rebuild the radial topology in LV distribution systems, the authors [5,6] have applied the shortest path algorithm to optimize the radial structure, including the shortest cables. Power phase balancing is key to reducing power loss and improving service quality in low-voltage networks; the authors [7] have used the genetic Energies 2023, 16, 5995 2 of 19 algorithm (GA) to minimize the number of customers required during phase sweeping for load balancing on a three-phase feeder by switching the phase connection of singlephase customers.…”

Section: Introductionmentioning

confidence: 99%

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Planning of an LVAC Distribution System with Centralized PV and Decentralized PV Integration for a Rural Village

et al. 2023

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Energy demand is continuously increasing, leading to yearly expansions in low-voltage (LV) distribution systems integrated with PVs to deliver electricity to users with techno-economic considerations. This study proposes and compares different topology planning strategies with and without PVs in a rural area of Cambodia over 30 years of planning. Firstly, the optimal radial topology from a distribution transformer to end-users is provided using the shortest path algorithm. Secondly, two different phase balancing concepts (i.e., pole balancing and load balancing) with different phase connection methods (i.e., power losses and energy losses) are proposed and compared to find the optimal topology. Then, the integration of centralized (CePV) and decentralized PV (DePV) into the optimal topology is investigated for three different scenarios, which are zero-injection (MV and LV levels), no sell-back price, and a sell-back price. Next, the minimum sell-back price from CePV and DePV integration is determined. To optimize phase balancing, including the location and size of PV, an optimization technique using a water cycle algorithm (WCA) is applied. Finally, an economic analysis of each scenario based on the highest net present cost (NPC), including capital expenditure (CAPEX) and operational expenditure (OPEX) over the planning period, is evaluated. In addition, technical indicators, such as autonomous time and energy, and environmental indicator, which is quantified by CO2 emissions, are taken into account. Simulation results validate the effectiveness of the proposed method.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Planning of an LVAC Distribution System with Centralized PV and Decentralized PV Integration for a Rural Village

et al. 2023

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“…In a radial EDS, power flows in only one direction: from the central source or substation to the consumption points [31]. This results in a smaller infrastructure and, therefore, in lower implementation costs when compared to other topologies.…”

Section: A Challenges Associated With Edsmentioning

confidence: 99%

On Integrating and Operating Distributed Energy Resources in Distribution Networks: A Review of Current Solution Methods, Challenges, and Opportunities

Guzmán-Henao,

Bolaños,

Montoya

et al. 2024

IEEE Access

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The growing demand for electric power and the need for an energy transition that contributes to the reduction of global greenhouse gas emissions have driven the development of various energy generation, storage, and offset technologies. These technologies are known as distributed energy resources. Their integration into distribution power systems not only contributes to improving operating aspects, but also allows supplying electricity to areas that do not have access to large-scale power systems. Therefore, the integration and management of these resources has become a topic of interest, and several studies seek to optimize their impact on technical, economic, and environmental aspects. However, this optimization poses specific challenges related to the type and number of variables related to the operation of a distribution power system. This review article aims to describe the main challenges posed by three-phase AC threephase distribution power systems under scenarios involving the integration of distributed energy resources. In addition, it presents some approaches proposed by different authors to improve the technical, economic, and environmental aspects of power grids. It can be stated that the strategies presented in the literature fail to consider scenarios that simultaneously integrate different types of technologies and optimize them while following a multi-objective approach and considering three-phase systems in a context of variable generation and demand. Therefore, future work in this field should address these aspects in a holistic manner, taking into account the computation efforts and processing times required by intelligent algorithms.INDEX TERMS Electrical mathematical model, DERs, DG, Energy costs, CO 2 emissions, Energy losses, BESS.

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Techno-Economic Analysis of Rooftop PVs in Low Voltage Distribution Systems for Rural Electrification: A Case Study in Cambodia

Vai,

Ohgaki

2023

2023 IEEE PES 15th Asia-Pacific Power and Energy Engineering Conference (APPEEC)

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Optimal Radial Topology with Phase Balancing in LV Distribution System Considering Energy Loss Reduction: A Case Study in Cambodia

Cited by 4 publications

References 17 publications

Planning of an LVAC Distribution System with Centralized PV and Decentralized PV Integration for a Rural Village

Planning of an LVAC Distribution System with Centralized PV and Decentralized PV Integration for a Rural Village

On Integrating and Operating Distributed Energy Resources in Distribution Networks: A Review of Current Solution Methods, Challenges, and Opportunities

Techno-Economic Analysis of Rooftop PVs in Low Voltage Distribution Systems for Rural Electrification: A Case Study in Cambodia

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