Optimal dump load allocation to regulate voltage and frequency in microgrid

Uniyal, Ankit; Sarangi, Saumendra; Kala, Himani

doi:10.1109/icps48983.2019.9067363

Cited by 3 publications

(17 citation statements)

References 18 publications

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“…As in [96,97], the capital, running, and maintenance costs of BESS allocation in an islanded MG have been minimized, while the optimal allocation of ESS in DCIMG has been studied for stability margin enhancements [98] and emissions reduction [99]. A dump load integration in DCIMG has been investigated to help with voltage and frequency regulation during off-peak hours [100][101][102]. Considering solar radiation and wind speed uncertainties' impact on the total annual cost of a remote islanded DC microgrid, the optimal number of wind turbines, PV cells, and BESS was determined by the particle swarm optimization (PSO) method, while uncertainties were accounted for by means of Monte-Carlo simulation (MCS) [103].…”

Section: Allocation Problemmentioning

confidence: 99%

“…Furthermore, Pareto optimal sets require another approach to select one optimal solution. Such decision-making criteria include the minmax fuzzy logic principle [47,85,99,148], fuzzy satisfying method [100][101][102], utopia-nadir balance [159], Nash equilibrium approach [91], and grey relation projection technique [89].…”

Section: Multi-criteria Decision Problemmentioning

confidence: 99%

“…Therefore, most of the allocation and reconfiguration studies in DCIMG consider the minimization of voltage deviations from the nominal value as an objective [100][101][102]108], while certain control problems pursued the same objective in designing the control strategy as in [52,53].…”

Section: Emissions Reductionmentioning

confidence: 99%

“…On the other hand, optimal frequency control at the primary level was achieved by consuming excess renewable generation at off-peak hours in [100][101][102] and at the secondary level by optimal design for the PI controller [52,53], the proportional-integralderivative (PID) controller [54], and the diesel generator droop regulator [55]. To avoid the large oscillations in frequency and reduce harmonics due to lack of inertia and certainty in DCIMG, studies such as [48][49][50][51] aimed to minimize frequency regulation ITAE error.…”

Section: Frequency Regulation Objectivesmentioning

confidence: 99%

“…ditionally, the next significant association of power balance constraint in DCIMG was with allocation [66,99,106,112,113,121] and then reconfiguration problems [116][117][118][119]162]. Conversely, power limits were applied as renewable power curtailment limits to ensure power flow convergence during peak [111,114] and off-peak hours of operation [100][101][102].…”

Section: Constraintsmentioning

confidence: 99%

See 4 more Smart Citations

Optimal Allocation and Operation of Droop-Controlled Islanded Microgrids: A Review

Kreishan

Zobaa

2021

Energies

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This review paper provides a critical interpretation and analysis of almost 150 dedicated optimization research papers in the field of droop-controlled islanded microgrids. The significance of optimal microgrid allocation and operation studies comes from their importance for further deployment of renewable energy, reliable and stable autonomous operation on a larger scale, and the electrification of rural and isolated communities. Additionally, a comprehensive overview of islanded microgrids in terms of structure, type, and hierarchical control strategy was presented. Furthermore, a larger emphasis was given to the main optimization problems faced by droop-controlled islanded microgrids such as allocation, scheduling and dispatch, reconfiguration, control, and energy management systems. The main outcome of this review in relation to optimization problem components is the classification of objective functions, constraints, and decision variables into 10, 9, and 6 distinctive categories, respectively, taking into consideration the multi-criteria decision problems as well as the optimization with uncertainty problems in the classification criterion. Additionally, the optimization techniques used were investigated and identified as classical and artificial intelligence algorithms with the latter gaining popularity in recent years. Lastly, some future trends for research were put forward and explained based on the critical analysis of the selected papers.

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Section: Allocation Problemmentioning

confidence: 99%

Section: Multi-criteria Decision Problemmentioning

confidence: 99%

Section: Emissions Reductionmentioning

confidence: 99%

Section: Frequency Regulation Objectivesmentioning

confidence: 99%

Section: Constraintsmentioning

confidence: 99%

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Optimal Allocation and Operation of Droop-Controlled Islanded Microgrids: A Review

Kreishan

Zobaa

2021

Energies

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Feasibility Study for Off-Grid Hybrid Power Systems Considering an Energy Efficiency Initiative for an Island in Ecuador

et al. 2022

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This paper shows the technical–economic, operational and environmental feasibility of four off-grid hybrid power systems to supply energy to the Cerrito de los Morreños community in Ecuador. These configurations consist of combinations of diesel generators, solar photovoltaic systems, and battery energy storage systems. Each configuration was simulated and the results were analyzed for two different load conditions: (1) the existing load profile and (2) a reduced load profile by incorporating an energy efficiency initiative. Homer Pro software was used to perform the simulations. The planning horizon for the simulations was selected to be 15 years. The results showed the diesel/photovoltaic/battery configuration with energy efficiency showed the best performance, which was achieved with a photovoltaic system of 160 kWp, the existing generator of 165 kW and a storage system of 283 kWh. The stand-alone diesel generator and photovoltaic/diesel configurations showed higher Net Present Costs, instability problems and higher CO2 emissions. Additionally, the configurations without energy efficiency had increases of between 15% and 40% higher costs compared to their respective energy-efficient scenarios. The information in this work could be useful for some organizations in Ecuador who are interested in investing in rural electrification projects with renewable energy to reduce and/or compensate their CO2 emissions.

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Mixed-Integer Distributed Ant Colony Optimization of Dump Load Allocation with Improved Islanded Microgrid Load Flow

Kreishan

Zobaa

2022

Energies

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Dump load (DL) utilization at low demand hours in highly penetrated islanded microgrid is of great importance to offer voltage and frequency regulation. Additionally, load flow (LF) convergence is vital to optimize the working states of the DL allocation problem. Hence, more analysis is necessary to highlight the significance of DL in power regulation while observing the influence of LF on solution accuracy. This article proposes two LF techniques derived from backward/forward sweep (BFS), viz., general BFS (GBFS) and improved special BFS (SBFS-II). The latter is based on global voltage shared between generating units, while the former has a more general approach by considering generating bus’s local voltage. The optimal sizing and sitting of DL with optimum droop sets are determined using the mixed-integer distributed ant colony optimization (MIDACO) with the two new LF methods. The optimization problem was formulated to minimize voltage and frequency deviations as well as power losses. The problem was validated on IEEE 69- and 118-bus systems and compared with established metaheuristics. Results show that DL allocation using MIDACO with SBFS-II and GBFS has improved the solution speed and accuracy, respectively. Furthermore, the enhanced voltage and frequency results highlight DL as an efficient power management solution.

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Optimal dump load allocation to regulate voltage and frequency in microgrid

Cited by 3 publications

References 18 publications

Optimal Allocation and Operation of Droop-Controlled Islanded Microgrids: A Review

Optimal Allocation and Operation of Droop-Controlled Islanded Microgrids: A Review

Feasibility Study for Off-Grid Hybrid Power Systems Considering an Energy Efficiency Initiative for an Island in Ecuador

Mixed-Integer Distributed Ant Colony Optimization of Dump Load Allocation with Improved Islanded Microgrid Load Flow

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