Optimal feeder flow control for grid connected microgrids

Aragüés‐Peñalba, Mònica; Prieto‐Araujo, Eduardo; Bullich‐Massagué, Eduard; Caire, Raphaël

doi:10.1016/j.ijepes.2019.04.047

Cited by 15 publications

(7 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This implies that finding the global optimal solution cannot be guaranteed. To solve this, for radial networks, the convex secondorder cone optimal power flow (SOCP-OPF) [24][25][26] has been studied. While [24,25] study the properties of the SOCP-OPF formulation, ref.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhancing Distribution Grid Efficiency and Congestion Management through Optimal Battery Storage and Power Flow Modeling

Taltavull-Villalonga,

Bullich-Massagué,

Saldaña-González

et al. 2024

Electricity

Self Cite

View full text Add to dashboard Cite

The significant growth in demand for electricity has led to increasing congestion on distribution networks. The challenge is twofold: it is needed to expand and modernize our grid to meet this increased demand but also to implement smart grid technologies to improve the efficiency and reliability of electricity distribution. In order to mitigate these congestions, novel approaches by using flexibility sources such as battery energy storage can be used. This involves the use of battery storage systems to absorb excess energy at times of low demand and release it at peak times, effectively balancing the load and reducing the stress on the grid. In this paper, two optimal power flow formulations are discussed: the branch flow model (non-convex) and the relaxed bus injection model (convex). These formulations determine the optimal operation of the flexibility sources, i.e., battery energy storage, with the objective of minimizing power losses while avoiding congestions. Furthermore, a comparison of the performance of these two formulations is performed, analyzing the objective function results and the flexibility operation. For this purpose, a real Spanish distribution network with its corresponding load data for seven days has been used.

show abstract

Section: Introductionmentioning

confidence: 99%

“…While [24,25] study the properties of the SOCP-OPF formulation, ref. [26] includes photovoltaic and diesel generators into the model.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Distribution Grid Efficiency and Congestion Management through Optimal Battery Storage and Power Flow Modeling

Taltavull-Villalonga,

Bullich-Massagué,

Saldaña-González

et al. 2024

Electricity

Self Cite

View full text Add to dashboard Cite

show abstract

“…Secondary control provides voltage/frequency restoration and other power quality functions. Tertiary control regulates power exchange of a microgrid with the main grid [5], [6]. The focus of the current paper is power sharing (primary) control of a microgrid in islanded mode, i.e.…”

Section: Introductionmentioning

confidence: 99%

Decentralised Droopless Control of Islanded Radial AC Microgrids Without Explicit Communication

Miller

Mirzaeva

Townsend

et al. 2022

IEEE Open J. Ind. Applicat.

View full text Add to dashboard Cite

A microgrid is a proven effective way to integrate renewable resources. This study presents an innovative control concept for decentralized AC microgrids, which is based on the architectural advantage of a radial microgrid structure. Under the proposed concept, power sharing between the distributed sources is achieved without droop control. Thus the need for a secondary control level is eliminated. Moreover, the use of explicit communication is replaced in the paper by a novel coordination mechanism based on the locally measured currents.The paper shows that, with a special design of the current control of grid-feeding converters, the proposed microgrid automatically provides equitable sharing of the load demand amongst the distributed generators (DGs). Moreover, the dynamic responses of the DGs are identical and decoupled from one another. It is further shown that the proposed AC microgrid is stable in the presence of any type of load. The findings of the paper are validated by simulations and laboratory experiments 1 .

show abstract

“…As a result, modern power systems have undergone vast changes and up-gradation to accommodate renewable energy sources in the power system network. The microgrid (MG) is one of such revolutions, integrating dispatchable and non-dispatchable distributed generation (DG) units through power electronics devices to power system networks, and providing uninterruptible power to communities [1,2]. MG possesses benefits like low capital cost, a low payback period, and high reliability; however, regarding their operation, there are still numerous technical challenges, including the flexible control of power flow between the utility grid and MG during grid-tied mode, and voltage magnitude and frequency control during islanding operation [3].…”

Section: Introductionmentioning

confidence: 99%

Fuzzy Logic-Based Direct Power Control Method for PV Inverter of Grid-Tied AC Microgrid without Phase-Locked Loop

et al. 2021

View full text Add to dashboard Cite

A voltage source inverter (VSI) is the key component of grid-tied AC Microgrid (MG) which requires a fast response, and stable, robust controllers to ensure efficient operation. In this paper, a fuzzy logic controller (FLC)-based direct power control (DPC) method for photovoltaic (PV) VSI was proposed, which was modelled by modulating MG’s point of common coupling (PCC) voltage. This paper also introduces a modified grid synchronization method through the direct power calculation of PCC voltage and current, instead of using a conventional phase-locked loop (PLL) system. FLC is used to minimize the errors between the calculated and reference powers to generate the required control signals for the VSI through sinusoidal pulse width modulation (SPWM). The proposed FLC-based DPC (FLDPC) method has shown better tracking performance with less computational time, compared with the conventional MG power control methods, due to the elimination of PLL and the use of a single power control loop. In addition, due to the use of FLC, the proposed FLDPC exhibited negligible steady-state oscillations in the output power of MG’s PV-VSI. The proposed FLDPC method performance was validated by conducting real-time simulations through real time digital simulator (RTDS). The results have demonstrated that the proposed FLDPC method has a better reference power tracking time of 0.03 s along with reduction in power ripples and less current total harmonic distortion (THD) of 1.59%.

show abstract

Optimal feeder flow control for grid connected microgrids

Cited by 15 publications

References 25 publications

Enhancing Distribution Grid Efficiency and Congestion Management through Optimal Battery Storage and Power Flow Modeling

Enhancing Distribution Grid Efficiency and Congestion Management through Optimal Battery Storage and Power Flow Modeling

Decentralised Droopless Control of Islanded Radial AC Microgrids Without Explicit Communication

Fuzzy Logic-Based Direct Power Control Method for PV Inverter of Grid-Tied AC Microgrid without Phase-Locked Loop

Contact Info

Product

Resources

About