Real-Time Energy Management Algorithm for Mitigation of Pulse Loads in Hybrid Microgrids

Mohamed, Azah; Salehi, Vahid; Mohammed, Osama A.

doi:10.1109/tsg.2012.2200702

Cited by 177 publications

(119 citation statements)

References 26 publications

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“…The term "hybrid AC/DC microgrid" conventionally refers to a microgrid that includes a conventional AC distribution system, as illustrated in Figure 1, and an extension DC grid that is connected to the AC system through one or more parallel bidirectional converters, as illustrated in Figure 2 [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. In the present study, a new design for a hybrid AC/DC microgrid is proposed, while the two back-to-back (B2B) series and parallel converters are connected between AC and DC microgrids, as shown in Figure 3.…”

Section: Hybrid Ac/dc Microgrid Structurementioning

confidence: 99%

“…The pu values of the three-phase ideal voltages are calculated, as shown in Eq. (9). The amount of the voltage that should be injected into the grid by the compensator is calculated by comparing the ideal obtained voltages and the instantaneous ones, as shown in Eq.…”

Section: Series Compensator Control Designmentioning

confidence: 99%

“…The different structures of the hybrid AC/DC microgrid and its coordination control algorithms were proposed in [5][6][7][8]. A real-time energy management algorithm was proposed for hybrid AC/DC microgrids, involving sustainable energy and hybrid energy storage, in [9][10][11]. The desired operating features of the hybrid microgrid can be added through interlinking converters.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A new proposal for the design of hybrid AC/DC microgrids toward high power quality

Khorasani¹,

Joorabian²,

Seifosadat³

2017

Turk J Elec Eng & Comp Sci

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Considering the advantages of DC microgrids, the extension of the conventional AC distribution grid can be implemented using a DC microgrid. This justifies the realization of a hybrid AC/DC microgrid. In the present study, a new global solution is presented to improve the power quality and to fully compensate the reactive power of an AC microgrid using DC bus capacity while introducing a new design for a hybrid AC/DC microgrid. In the new design, backto-back connections of two series and parallel converters, as well as the presentation of new controllers and simultaneous utilization of an earthing switch, are proposed. The proposed method guarantees the quality of the delivered voltage to consumers and the drawn current from the network according to the IEEE-519 and IEEE-1159 standards under different power quality problems (e.g., interruptions, sags, harmonics, and any variation in voltage/current signals from pure sinusoidal). Through the proposed design of the new hybrid AC/DC microgrid, as a new feature, the operation of the network in islanded mode can be achieved in accordance with power quality standards even in the worst load quality conditions. It should be noted that in common hybrid microgrids in islanded mode, the delivered voltage quality is proportional to the quality of the consumer's load current. Another possibility of the proposed design is the instantaneous VAR compensation of nonlinear and induction loads of consumers to keep the power factor of the distribution transformer close to unit value. Simulation results indicate that there are acceptable levels of compensation for different types of power quality problems. Total harmonic distortions and total demand distortions are below 3% in both the grid-connected and isolated modes of the hybrid AC/DC microgrid.

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Section: Hybrid Ac/dc Microgrid Structurementioning

confidence: 99%

Section: Series Compensator Control Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A new proposal for the design of hybrid AC/DC microgrids toward high power quality

Khorasani¹,

Joorabian²,

Seifosadat³

2017

Turk J Elec Eng & Comp Sci

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show abstract

“…[3,6] to protect the components of CESS. In the intensive study, namely the coordination control of various ESSs, only the literature [12] discusses overcharge and over discharge protection control scheme when the SOC of two ESSs are in the different states, and only the literature [15] describes that the power-type storage remains full charge to satisfy the pulse load in microgrid, and only the literatures [1] and [6] propose that the SOC of power-type storage should be maintained at its intermediate value to maintain a certain power adjustment capability all the time.…”

Section: Introductionmentioning

confidence: 99%

Coordinated Control Strategy and Optimization of Composite Energy Storage System Considering Technical and Economic Characteristics

Li¹,

Xie²,

Zhao³

et al. 2015

Journal of Electrical Engineering and Technology

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-Control strategy and corresponding parameters have significant impacts on the overall technical and economic characteristics of composite energy storage systems (CESS). A better control strategy and optimized control parameters can be used to improve the economic and technical characteristics of CESS, and determine the maximum power and stored energy capacity of CESS. A novel coordinated control strategy is proposed considering the coordination of various energy storage systems in CESS. To describe the degree of coordination, a new index, i.e. state of charge coordinated response margin of supercapacitor energy storage system, is presented. Based on the proposed control strategy and index, an optimization model was formulated to minimize the total equivalent cost in a given period for two purposes. The one is to obtain optimal control parameters of an existing CESS, and the other is to obtain the integrated optimal results of control parameters, maximum power and stored energy capacity for CESS in a given period. Case studies indicate that the developed index, control strategy and optimization model can be extensively applied to optimize the economic and technical characteristics of CESS. In addition, impacts of control parameters are discussed in detail.

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“…This author, along with others has developed a real time energy management to mitigate such conditions as published by Ahmed, Salehi, et. al [186]. In this work, the system loads are based on hourly average variations and can be considered as lowfrequency variation, whereas power transients, which is sustained for minutes, seconds, or milliseconds come under the high-frequency segment.…”

Section: Energy Management In Hybrid Microgridsmentioning

confidence: 99%

Development and Verification of Control and Protection Strategies in Hybrid AC/DC Power Systems for Smart Grid Applications

Mehr¹

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Real-Time Energy Management Algorithm for Mitigation of Pulse Loads in Hybrid Microgrids

Cited by 177 publications

References 26 publications

A new proposal for the design of hybrid AC/DC microgrids toward high power quality

A new proposal for the design of hybrid AC/DC microgrids toward high power quality

Coordinated Control Strategy and Optimization of Composite Energy Storage System Considering Technical and Economic Characteristics

Development and Verification of Control and Protection Strategies in Hybrid AC/DC Power Systems for Smart Grid Applications

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