Optimisation, benchmark testing and comparison of droop control variants in microgrids

Eberlein, Simon; Rudion, Krzysztof

doi:10.1049/stg2.12036

Cited by 9 publications

(5 citation statements)

References 49 publications

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“…m i and n i are selected respectively, as follows:

{m}_{i}=\frac{{\Delta }f}{{P}_{i,rated}}

{n}_{i}=\frac{{\Delta }V}{{Q}_{i,rated}}

where, Δ f and Δ V are allowed frequency and voltage magnitude deviations and P i , rated and Q i , rated are rated active and reactive powers of that DER. The output voltage reference obtained by the droop characteristics is tracked by VCM [2, 4].…”

Section: Proposed Control Methods Of Dispatchable Dersmentioning

confidence: 99%

“…where, Δf and ΔV are allowed frequency and voltage magnitude deviations and P i,rated and Q i,rated are rated active and reactive powers of that DER. The output voltage reference obtained by the droop characteristics is tracked by VCM [2,4]. Consider an MG consisting of two DERs with equal capacity.…”

Section: Primary Controlmentioning

confidence: 99%

“…A microgrid (MG) (MG) is an integral part of a distribution system that incorporates distributed energy resources (DERs) and loads, operating in both islanded and grid-connected modes [1]. This paper focuses on the islanded mode, where coordinated control of DERs is essential to ensure proportional load sharing, that is, the distribution of MG load among DERs according to their ratings, while maintaining acceptable frequency and voltage levels [2]. To accomplish these objectives, conventional active power-frequency (P-f) and reactive power-voltage magnitude (Q-V) droop characteristics are commonly employed [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…This paper focuses on the islanded mode, where coordinated control of DERs is essential to ensure proportional load sharing, that is, the distribution of MG load among DERs according to their ratings, while maintaining acceptable frequency and voltage levels [2]. To accomplish these objectives, conventional active power-frequency (P-f) and reactive power-voltage magnitude (Q-V) droop characteristics are commonly employed [2,3]. However, the use of P-f and Q-V droop characteristics can lead to deviations in frequency and voltage magnitude.…”

Section: Introductionmentioning

confidence: 99%

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Secondary control with reduced communication requirements for accurate reactive power sharing in AC microgrids

Baharizadeh,

Golsorkhi,

Savaghebi

2023

IET Smart Grid

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A secondary control method is proposed for accurate reactive power sharing as well as frequency and voltage restoration in islanded AC microgrids (MGs). The proposed method consists of an MG secondary controller, local secondary controllers for distributed energy resources (DERs), and a low‐bandwidth communication link for broadcasting common data from the MG secondary controller to DERs. The broadcasted data includes the MG point of common coupling voltage magnitude and a common vertical shift for frequency and voltage restoration. Local secondary controllers calculate specific shifts for the Q‐V droop characteristic of each dispatchable DER and the V‐Q reverse droop characteristic of each photovoltaic (PV) system, aligning their operating points with the Q‐VPCC and VPCC‐Q droop characteristics, respectively. By employing VPCC as a common global variable, coordination of reactive power generation of all dispatchable DERs and PV systems is achieved, enabling accurate reactive power sharing. Importantly, in the proposed scheme, the required communication bandwidth and the communication burden are minor and are not increased with the number of DERs. Additionally, the DERs are relieved of the need for data transmission capability. The small signal stability of the proposed method is examined and its effectiveness is validated through Hardware‐in‐the‐Loop (HIL) experimental results.

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“…m i and n i are selected respectively, as follows:

{m}_{i}=\frac{{\Delta }f}{{P}_{i,rated}}

{n}_{i}=\frac{{\Delta }V}{{Q}_{i,rated}}

Section: Proposed Control Methods Of Dispatchable Dersmentioning

confidence: 99%

Section: Primary Controlmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Secondary control with reduced communication requirements for accurate reactive power sharing in AC microgrids

Baharizadeh,

Golsorkhi,

Savaghebi

2023

IET Smart Grid

View full text Add to dashboard Cite

show abstract

“…Therefore, controllers may be optimised using heuristic algorithms [60] or variants of the conventional droop used. In [61], the various droop control variants present in the literature were compared, including transient droop, angle power feedforward droop, and the virtual frame transformation droop.…”

Section: Droop Controlmentioning

confidence: 99%

Grid-Forming Control: Advancements towards 100% Inverter-Based Grids—A Review

Ebinyu,

Abdel-Rahim,

Mansour

et al. 2023

Energies

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Changes are being implemented in the electrical power grid to accommodate the increased penetration of renewable energy sources interfaced with grid-connected inverters. The grid-forming (GFM) control paradigm of inverters in active power grids has emerged as a technique through which to tackle the effects of the diminishing dominance of synchronous generators (SGs) and is preferred to the grid-following (GFL) control for providing system control and stability in converter-dominated grids. Therefore, the development of the GFM control is important as the grid advances towards 100% inverter-based grids. In this paper, therefore, we aim to review the changing grid scenario; the behaviour of grid-connected inverter control paradigms and major GFM inverter controls, including their modifications to tackle low inertia, reduced power quality, fault-ride through capability, and reduced stability; and the state-of-the-art GFM models that are pushing the universality of GFM inverter control.

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