Operation and control of a microgrid containing inertial and non-inertial micro sources

Majumder, Ritwik; Shahnia, Farhad; Ghosh, Arindam; Ledwich, Gerard; Wishart, Michael; Zare, Firuz

doi:10.1109/tencon.2009.5396202

Cited by 21 publications

(7 citation statements)

References 9 publications

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“…The rotor-side converter control objectives are MPPT in WTG and stator side reactive power management. Different control schemes such as direct torque control(DTC)and direct power control(DPC)for a DFIG in [18] and [19] have been proposed. In this paper, the proposed DTC scheme [17], shown in Fig.6, has been chosen as a control scheme for the rotor-side converter.…”

Section: The Dfig Converters Controller a Rotor-side Converter Contrmentioning

confidence: 99%

Optimal Voltage And Frequency Control Of A Microgrid System Using A Teaching-Learning Based Optimization (TLBO) Algorithm

Hedayati

Abbasi²

2015

International Journal of Electrical Electronics and Data Communication

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Abstract-The stability is an important topic to plan and manage the energy in the microgrids as the same as the conventional power systems. The voltage and frequency stability is one of the most important issues recently studied in microgrids. The objectives of this paper are the modelling and designing of the components and optimal controllers for the voltage and frequency control of the AC/DC hybrid microgrid under the different disturbances. Since the PI controllers have the advantages of simple structure and easy implementation, so they were designed and modeled in this paper. The teachinglearning based optimization (TLBO) algorithm is used to optimize the controllers' parameters. According to the achieved results, the optimal PI controllers have a good performance in voltage and frequency control of the microgrid.

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Section: The Dfig Converters Controller a Rotor-side Converter Contrmentioning

confidence: 99%

Optimal Voltage And Frequency Control Of A Microgrid System Using A Teaching-Learning Based Optimization (TLBO) Algorithm

Hedayati

Abbasi²

2015

International Journal of Electrical Electronics and Data Communication

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“…Hence, the active and reactive power delivered by the DERs are measured and used to derive the reference DER converter output voltage as [17] where the LV feeder impedance is Z line = R line + j X line and the suffix rated shows the rated values. This will be the voltage reference for the converter in off-grid mode in Fig.…”

Section: Power Output Control Modulementioning

confidence: 99%

Operation and control of three phase microgrids consisting of single-phase DERs

Chandrasena

Shahnia

Rajakaruna

et al. 2013

2013 IEEE 8th International Conference on Industrial and Information Systems

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Abstract-Autonomous operation of a three-phase microgrid (MG) consisting of arbitrarily located single-phase distributed energy resources (DER) among the three phases is investigated. Due to random connection of single-phase loads and DERs to different phases, it is highly probable that one phase has more generation while another phase has more demand. This becomes a challenging issue during autonomous operation. This paper demonstrates how single-phase DERs in one phase can share the load demand in other phases. Several case studies are carried out using PSCAD/EMTDC to demonstrate the efficacy of the proposed power management and control strategy for single-phase DER converters distributed unequally among the three-phases in the MG. Index Terms--Microgrid, single-phase DER, Power Sharing.

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“…Thus, the system frequency will act as the communication signal amongst the DGs to share the real power appropriately. The conventional frequency droop characteristic can be expressed as [10,13,17] (1) where f* is the instantaneous frequency setting for a generator considered, f r is the rated frequency of the system, P r is the rated real power output of the generator and P* is the measured actual real power output of the DG. The droop coefficient is denoted by m. The frequency droop characteristic given in (1) is shown in Fig.…”

Section: Real and Reactive Power Sharing In A Microgridmentioning

confidence: 99%

Dynamic response of distributed generators in a hybrid microgrid

Dewadasa

Ghosh

Ledwich

2011

2011 IEEE Power and Energy Society General Meeting

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A microgrid may be supplied from inertial (rotating type) and non-inertial (converter-interfaced) distributed generators (DGs). However the dynamic response of these two types of DGs is different. Inertial DGs have a slower response due to their governor characteristics while non-inertial DGs have the ability to respond very quickly. The focus of this paper is to propose better controls using droop characteristics to improve the dynamic interaction between different DG types in an autonomous microgrid. The transient behavior of DGs in the microgrid is investigated during the DG synchronization and load changes. Power sharing strategies based on frequency and voltage droop are considered for DGs. Droop control strategies are proposed for DGs to improve the smooth synchronization and dynamic power sharing minimizing transient oscillations in the microgrid. Simulation studies are carried out on PSCAD for validation.

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Operation and control of a microgrid containing inertial and non-inertial micro sources

Cited by 21 publications

References 9 publications

Optimal Voltage And Frequency Control Of A Microgrid System Using A Teaching-Learning Based Optimization (TLBO) Algorithm

Optimal Voltage And Frequency Control Of A Microgrid System Using A Teaching-Learning Based Optimization (TLBO) Algorithm

Operation and control of three phase microgrids consisting of single-phase DERs

Dynamic response of distributed generators in a hybrid microgrid

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