Optimal Distributed Generation and Capacitor Bank Allocation and Sizing at Two Voltage Levels

Cetkovic, D.; Komen, Vitomir

doi:10.1109/jsyst.2023.3280673

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…In [21], DGs and capacitor banks (CBs) are sized and allocated based on single-level GA optimization to reduce losses and to improve the voltage profile. In this paper, the evaluation of a GA chromosome only utilized voltage levels and transformer core impedance to calculate the losses, without considering the network's topology and distribution line losses.…”

Section: Active Planning For Vms With Iot Supportsmentioning

confidence: 99%

Active Planning for Virtual Microgrids with Demand-Side and Distributed Energy Resources

Piao,

Xue,

et al. 2024

Energies

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In this paper, the notion of a cohesive and self-sufficient grid is proposed. Based on a cohesive and self-sufficient virtual microgrid, an active distribution network is optimally planned, and an optimal configuration of demand-side resources, distributed generations, and energy storage systems are generated. To cope with stochastic uncertainty from forecast error in wind speed and load, flexibility reserves are needed. In this paper, the supply relation between flexibility and uncertainty is quantified and integrated in an innovative index which is defined as cohesion. The optimization objectives are a minimized operational cost and system net-ability cohesion as well as self-sufficiency, which is defined as the abilities both to supply local load and to deal with potential uncertainty. After testing the optimal configuration in the PG&E 69 bus system, it is found that with a more cohesive VM partition, the self-sufficiency of VMs is also increased. Also, a case study on uncertainty-caused system imbalance is carried out to show how flexibility resources are utilized in real-time operational balance.

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Section: Active Planning For Vms With Iot Supportsmentioning

confidence: 99%

Active Planning for Virtual Microgrids with Demand-Side and Distributed Energy Resources

Piao,

Xue,

et al. 2024

Energies

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A Review of Distributed Generation Optimization with Shunt Capacitors in Reconfigured Distribution Networks

Fadel

2024

Wireless Pers Commun

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Voltage Rise Mitigation in Medium-Voltage Networks with Long Underground Cables and Low Power Demand

Ćetković,

Žutolija,

Komen

2024

Energies

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Medium-voltage (MV) distribution networks that are spread through larger territory and threatened by extreme weather conditions are sometimes formed by very long underground cable lines. In such circumstances, a significant amount of capacitive reactive power flow can be generated. If, concurrently, there is low power demand in the network, it can result in significant reverse reactive power flows and voltage rise issues. This paper proposes a general approach for analyzing and mitigating voltage rise issues and demonstrates it using an example of a real distribution network that operates under the described conditions. Previous studies that dealt with this problem did not include the allocation of multiple shunt reactors in a larger distribution network, modeling a high number of lines that create reverse reactive power flows, and modeling the main distribution transformers, which are the locations where voltage rise predominantly occurs. In this paper, we demonstrate that precise allocation and placement of multiple shunt reactors in a fully modeled, larger distribution system, including transformer models, can reduce reverse reactive power flows, thereby improving voltage in the distribution system. If hourly control of the power factor from the distributed generation unit is also implemented, the voltage can be further improved.

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Optimal Distributed Generation and Capacitor Bank Allocation and Sizing at Two Voltage Levels

Cited by 3 publications

References 31 publications

Active Planning for Virtual Microgrids with Demand-Side and Distributed Energy Resources

Active Planning for Virtual Microgrids with Demand-Side and Distributed Energy Resources

A Review of Distributed Generation Optimization with Shunt Capacitors in Reconfigured Distribution Networks

Voltage Rise Mitigation in Medium-Voltage Networks with Long Underground Cables and Low Power Demand

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