Optimal allocation of multiple distributed generation units in power distribution networks for voltage profile improvement and power losses minimization

Werkie, Yalew Gebru; Kefale, Habtemariam Aberie

doi:10.1080/23311916.2022.2091668

Cited by 29 publications

(14 citation statements)

References 22 publications

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“…In order to validate the practicability of the proposed index BVSI in solving the optimal location and sizing problem, the results are compared with the other few existing methods using hybrid analytical -metaheuristic algorithm or also known as two-stage approach. In all previous works proposed by authors in [57][58][59], the candidate buses for DGs location were pre-determined initially using analytical approach via loss sensitivity factor (LSF). This helps to reduce the search space for solving the optimization problems in the next stage.…”

Section: Case IV : Application Of Bvsi In Solving the Optimal Locatio...mentioning

confidence: 99%

“…This helps to reduce the search space for solving the optimization problems in the next stage. Based on these pre-determined candidate locations, the optimal location and sizing of DG(s) were finally determined using few metaheuristic algorithms such as Bacteria Foraging Optimization Algorithm (BFOA) [57], Dragonfly Algorithm (DA) [58] and Improved Particle Swarm Optimization (IPSO) [59].…”

Section: Case IV : Application Of Bvsi In Solving the Optimal Locatio...mentioning

confidence: 99%

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New Line Voltage Stability Index (BVSI) for Voltage Stability Assessment in Power System: The Comparative Studies

et al. 2022

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Modern power utilization has been forced to operate close to their stability limits, which may lead to voltage instability or collapse owing to the stressed operating conditions of networks. This raises the need to develop a new technique to predict the level of voltage security under different operating conditions to detect critical lines or buses that operate close to its stability limit. This study proposes a new line voltage stability index (BVSI) to identify weak lines and buses for various loading conditions and network configurations. Comparative studies between the existing voltage stability indices (VSIs) and the proposed index have been performed to comprehensively highlight the indices' foundation, performance, and overall behavior for several different IEEE benchmark test systems; 14-bus, 30-bus, 118-bus test systems and 33bus radial distribution system. The sensitivity towards different loading conditions due to variables such as active power, reactive power, angular difference between sending and receiving bus voltage, line resistance, and shunt admittance, which have been neglected in the formulation of VSIs, are briefly discussed. The findings of this work are aimed to provide a general guideline for other researchers in selecting the appropriate VSIs for various applications, particularly in solving optimization problems such as distributed generation (DG) and reactive power compensation (RPC) placement, optimal power flow, optimal reactive power dispatch, optimal network reconfiguration for various loading occasions, and different networks. Lastly, the application of the proposed index has been adopted as an analytical approach for solving optimal location and sizing of DG(s) problems. The results prove the effectiveness of the proposed index in accessing the voltage stability state and stress condition of lines. Besides, the proposed approach also capable of determining the potential candidate bus for single DG location and sizing effectively.

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Section: Case IV : Application Of Bvsi In Solving the Optimal Locatio...mentioning

confidence: 99%

Section: Case IV : Application Of Bvsi In Solving the Optimal Locatio...mentioning

confidence: 99%

New Line Voltage Stability Index (BVSI) for Voltage Stability Assessment in Power System: The Comparative Studies

et al. 2022

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“…In [8], the modified sine cosine algorithm (MSCA) is introduced for handling techno-economic multiobjective functions (i.e., f1, f3, and f4) while solving optimal PV and WT type DGs integration. In [9], loss sensitivity factors (LSFs) and voltage stability indices (VSIs) are used to find locations, and improved-PSO (IPSO) is used to find the best sizes for PV-type DGs to reduce real and reactive power loss and improve the voltage profile.…”

Section: Introductionmentioning

confidence: 99%

Northern Goshawk Optimization for Optimal Allocation of Multiple Types of Active and Reactive Power Distribution Generation in Radial Distribution Systems for Techno-Environmental Benefits

2023

IJIES

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Radial distribution systems (RDSs) can work better from a technical, economic, and environmental point of view if they have the right mix of renewable energy-based distribution generation (DG) and reactive power sources like and distribution-static compensator (DSTATCOM). In this paper, the Northern Goshawk Optimization (NGO), a new meta-heuristic that mimics the hunting behaviour of the northern goshawk, is introduced as a way to figure out where and how big different types of active and reactive power DGs in RDSs should be. For the suggested multi-objective function, NGO is used to find the best places and sizes for photovoltaic systems (PVs), wind turbine systems (WTs), and DSTATCOMs. The main goals of the suggested method are to reduce distribution losses, improve the voltage profile, increase the voltage stability margin, and reduce greenhouse gas (GHG) emissions. Five different case studies are simulated to figure out how well the suggested method works with computers. Simulations use IEEE 33-bus feeder. When compared to the literature and other heuristic algorithms, the results show that NGO works. The computational efficiency of NGO is compared for four cases: (i) only PV ((ii) only WT (iii) only DSTATCOM and (vi) simultaneous PV, WT and DSTATCOM allocation. The results also show that the proposed NGO much efficient than other algorithms and also improves all techno-environmental factors and RDS performance in a big way.

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“…Therefore, attention to the prosumers management is on the agenda, and there are multiple research papers dedicated to the problems related to the increasing penetration of DERs. Of particular interest are the problems of voltage and capacity constraints violation and of the power and energy losses minimization in such networks [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

“…Also, the results of energy loss assessment should rely on a simple and accurate power flow solution method. However, the energy loss estimations, based on the "exact loss formula" [14] and the algebraic techniques, which use resistance of per unit length of the power lines [16,18,19,24,27] or complex impedance of the power line [20] might be not enough accurate and quick for branched power systems. Therefore, a convenient numeric method was selected for this work.…”

Section: Introductionmentioning

confidence: 99%

Assessment of energy losses in power distribution systems with individual prosumers and energy communities

Diahovchenko

Petrichenko

2023

The Journal of Engineering

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Achieving the energy transition target will require the extensive engagement of consumers and the private sector in investment and operation of renewable-based power systems. Support of individual prosumers and proliferation of energy communities are efficient ways to implement this engagement. To facilitate smooth integration of prosumers with photovoltaic (PV) installations, while satisfying effective operation of the power distribution system (PDS), it is important to fundamentally assess energy losses for different grid development scenarios. In this paper, the energy losses are compared for two alternatives: (a) when prosumers with PV installations act as individual grid users, and (b) when prosumers become participants of a solar energy community. To achieve this goal, modeling of loads, prosumers' behavior and PV generation was performed. Furthermore, it has been analyzed how the physical topology of the distribution network can be harmonized with the underlying bidirectional power flows for each alternative, while complying with system constraints. The IEEE 123 Node Test Feeder was employed to capture the performance of the PDS and to estimate the energy loss with various penetration levels of prosumers. The results indicate that reduction of energy losses is only possible until a certain PV penetration level, after which additional PV capacities cause increase in energy losses and complicate the PDS's operation. Lower energy losses were supervised for the cases with dispersed PV generation, compared to the cases focused on energy communities. This means that the PDS demonstrates better tolerance to evenly distributed prosumers, rather than to single sources of a larger scale installed in one node. The outputs of this study will help the energy planners and utilities in improving performance of the PDS in terms of loss minimization and loadability maximization. JEL CLASSIFICATIONRenewable power engineering 1

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Optimal allocation of multiple distributed generation units in power distribution networks for voltage profile improvement and power losses minimization

Cited by 29 publications

References 22 publications

New Line Voltage Stability Index (BVSI) for Voltage Stability Assessment in Power System: The Comparative Studies

New Line Voltage Stability Index (BVSI) for Voltage Stability Assessment in Power System: The Comparative Studies

Northern Goshawk Optimization for Optimal Allocation of Multiple Types of Active and Reactive Power Distribution Generation in Radial Distribution Systems for Techno-Environmental Benefits

Assessment of energy losses in power distribution systems with individual prosumers and energy communities

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