A novel control strategy of a distributed generator operating in seven modes for ancillary services under grid faults

Rekik, Mouna; Abdelkafi, Achraf; Krichen, Lotfi

doi:10.1016/j.ijepes.2012.10.044

Cited by 26 publications

(10 citation statements)

References 25 publications

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“…This adjustment is made by calculating the quantities of the active and reactive powers necessary to inject or absorb it, respectively, in or from the electrical network. These exchanged powers are determined by the following expressions:

\begin{matrix} lefttrue \\ P_{italicinj} = k_{f} (Δ f - sign (Δ f) Δ f_{italicacc}) \\ Q_{italicinj} = k_{v} (Δ V - sign (Δ V) Δ V_{italicacc}) . \end{matrix}

…”

Section: Power Management Strategymentioning

confidence: 99%

“…Specific standards for the grid frequency and voltage variations 33 In the case of overproduction of wind generator "P g > P L + P inj " and SC maximum SOC "U sc ≥ U scmax " and battery bank maximum SOC "SOC bat ≥ SOC batmax ," the wind turbine operates in limited mode. It provides only the power demanded by loads and system services.…”

Section: Figure 8 Power Management Strategymentioning

confidence: 99%

“…By introducing the Equation 32 into Equation 33, the frequency and voltage variations are determined by Equation 35. This index helps us to realize the simultaneous control of voltage and frequency.…”

Section: Droop Control Based On Frequency and Voltage Regulationmentioning

confidence: 99%

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A flexible control strategy of a renewable active generator to participate in system services under grid faults

Krim

Abbes

Krim

et al. 2018

Int Trans Electr Energ Syst

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Summary This paper was interested in flexible control of an active generator (AG) that includes a wind turbine, battery‐supercapacitors hybrid storage system, and loads. This AG can operate according to grid stability in islanded, synchronization, and grid‐connected modes. The developed control strategy comprises two principal control tasks: the first one is a two‐layer power management algorithm (PMA). The response of two‐layer PMA enables to detect the islanding mode in case of grid fault and to monitor the renewable power generation into nine operating modes according to the state‐of‐charge of each storage system. The second task is droop control. This droop control aims to reduce grid voltage and frequency variations. It controls exchanged powers with grid to ensure its stability. It also ensures a continuous supply of load in case of grid fault. The system is simulated using MATLAB software, and results are provided in order to show the feasibility of this control strategy.

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\begin{matrix} lefttrue \\ P_{italicinj} = k_{f} (Δ f - sign (Δ f) Δ f_{italicacc}) \\ Q_{italicinj} = k_{v} (Δ V - sign (Δ V) Δ V_{italicacc}) . \end{matrix}

…”

Section: Power Management Strategymentioning

confidence: 99%

Section: Figure 8 Power Management Strategymentioning

confidence: 99%

See 1 more Smart Citation

A flexible control strategy of a renewable active generator to participate in system services under grid faults

Krim

Abbes

Krim

et al. 2018

Int Trans Electr Energ Syst

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“…The excess or lack of fundamental active power generated by the WF will be injected or absorbed into or from the grid, respectively. However, the uncontrollable exchange of active power between WF and electrical power system may disrupt the stability of electrical network frequency [6,26]. In fact, it can create derivation which can exceed the normalized frequency variations mentioned in standards.…”

Section: Nl Loads Currents Identification Systemmentioning

confidence: 99%

“…New concepts have been elaborated to enhance the visibility of RDG to participate in system services and guarantee a satisfactory operation of the future main grid. From these new concepts, particular interest focuses on the MG (micro-grid), which is defined as a local energy system containing various microsources, and loads, and it can operate either connected or disconnected from the main grid [6].…”

Section: Introductionmentioning

confidence: 99%

A micro-grid ensuring multi-objective control strategy of a power electrical system for quality improvement

Rekik

Abdelkafi

Krichen

2015

Energy

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STA and SOSM control‐based approach of a renewable power generator for adjusting grid frequency and voltage

Krim

Abbes

Krim

et al. 2020

Int Trans Electr Energ Syst

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Summary This article is interested in a controlled three‐phased voltage source inverter (VSI) for a grid‐connected wind power generator. The objective consists of participating in auxiliary services by enhancing the grid stability. An active wind generator associated with a battery/super‐capacitor storage system composes the studied renewable generator. It is related to a power consumer (load) to form a microgrid (MG) that can work according to grid stability in two modes: standalone and grid‐tied. Thus, the principal objective of this study is to develop a robust control method for MG connection with the grid to ensure the grid voltage and frequency regulation. This control has two control tasks: First, an adaptive droop control is implemented to adjust power flows exchanged with the grid to ensure its stability. It regulates its voltage and frequency. Second, a sliding mode control (SMC) with super‐twisting algorithm is put forward for the VSI to improve the regulation of the grid voltage and frequency under uncertainties. It improves control results concerning the reduction of harmonics caused by sudden variations of the load and of powers exchanged with the grid. It allows preventing the phenomenon of chattering created by classical sliding mode technique. Extensive simulation studies are carried out under MATLAB/Simulink. They prove the effectiveness of the suggested droop and SMCs compared with the classical proportional‐integral controller.

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A novel control strategy of a distributed generator operating in seven modes for ancillary services under grid faults

Cited by 26 publications

References 25 publications

A flexible control strategy of a renewable active generator to participate in system services under grid faults

A flexible control strategy of a renewable active generator to participate in system services under grid faults

A micro-grid ensuring multi-objective control strategy of a power electrical system for quality improvement

STA and SOSM control‐based approach of a renewable power generator for adjusting grid frequency and voltage

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