Coordination of UFLS and UFGC by Application of D-SMES

Zhang, Li; Liu, Yilu; Crow, M.L.

doi:10.1109/pes.2005.1489663

Cited by 6 publications

(5 citation statements)

References 8 publications

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“…7 a and b illustrate the behavioural response of the system while testing under the no‐LS, the conventional LS and the proposed LS strategy. The conventional LS strategy undertaken in this to compare with the proposed strategy is considered from [25]. The conventional LS strategy integrates the ultra‐capacitor‐based storage to support the system transient but the effect of a slow responding storage device has not been integrated.…”

Section: Results Analysismentioning

confidence: 99%

“…Thus, adaptive UFLS techniques are further enhanced in terms of transient stability, as [24] exploits super‐conducting magnetic energy storage systems to improve transient stability while reducing the LS. In [25], super‐conducting magnetic storage is implemented to compensate the frequency fluctuations until governor response completely comes into action. Further, Delille et al [26] employ an ultracapacitor based storage element to provide dynamic frequency support.…”

Section: Introductionmentioning

confidence: 99%

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Robust power balancing scheme for the grid‐forming microgrid

Chandak

Bhowmik

Rout

2019

IET Renewable Power Generation

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Control over the voltage and the frequency instabilities in a grid-forming microgrid due to the power mismatch conditions become the point of concern. Therefore, the study implements a self-tuned proportional-integral integrated active power-voltage drooping and reactive power-frequency boosting control strategy for the precise power sharing among the distributed generators. Furthermore, to handle the power deficit scenarios and protect the system from the blackout, a system independent and priority-based adaptive three-stage load shedding strategy is proposed. The sensitivity of the strategy depends on the system inertia and is computed according to the varying absolute rate-of-change-of-frequency. The strategy incorporates the operation of a hybrid storage system comprised of battery and supercapacitor present in the microgrid, to provide a reliable power supply to the customers for a considerable time rather than a sudden load shedding. The effectiveness of the proposed strategies is investigated on a modified IEEE 13-bus system. The study is simulated in the time domain, on the podium of MATLAB 2015b.

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Section: Results Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Robust power balancing scheme for the grid‐forming microgrid

Chandak

Bhowmik

Rout

2019

IET Renewable Power Generation

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“…The authors use numbers and genetic calculations in the process of stack shedding in their research. Furthermore, some smartgrid techniques for reducing power usage are discussed by [21,22]. The plans suggested so far need to be studied more to make a microgrid work better.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the Transient Stability of Grid Connected Microgrids Including Inverter Based DGs Using DSTATCOM

Maithem almousawi

2024

jes

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Microgrids are becoming popular because they can meet the needs of people who want energy from natural sources and are using more and more energy. Itis important to emphasis on numerous safety and control features of a microgrid. During the change from following the grid to forming the grid, the instability of frequency and voltage due to control problems becomes the main concern. Then, the paper uses a method to control the frequency and voltage of power generators so they can share power efficiently. Furthermore, we are suggesting a way to handle situations when there is not enough control and to keep the system strong. We are proposing a method to prioritize and shed different parts of the system in three stages to help with this. The effectiveness of the method depends on how quickly the system reacts and is calculated based on the changing speed of the frequency. The process combines the battery capacity system and D-STATCOM in the microgrid to provide a reliable power supply to customers for a long time without sudden power cuts. We test the proposed procedures on a smaller version of an IEEE 13-bus microgrid using MATLAB. We recreate the time-domain to see if the procedures work well.

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“…• advanced load monitoring concepts including centralized [4][5][6][7][8][9][10][11][12][13][14][15][16] or decentralized monitoring [17][18][19][20][21][22]; • application of various types of hybrid systems [13,23,24] including those using advanced optimization algorithms (e.g., meta-heuristic techniques [14,15]); • application of wide area monitoring systems [25][26][27][28] or smart grid technology [13,[26][27][28][29][30][31][32][33][34]; • use of information technology [4,33,34] including Supervisory Control and Data Acquisition (SCADA) systems [35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Underfrequency Load Shedding: An Innovative Algorithm Based on Fuzzy Logic

Małkowski

Nieznański

2020

Energies

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In contemporary power systems, the load shedding schemes are typically based on disconnecting a pre-specified amount of load after the frequency drops below a predetermined value. The actual conditions at the time of disturbance may largely differ from the assumptions, which can lead to non-optimal or ineffective operation of the load shedding scheme. For many years, increasing the effectiveness of the underfrequency load shedding (UFLS) schemes has been the subject of research around the world. Unfortunately, the proposed solutions often require costly technical resources and/or large amounts of real-time data monitoring. This paper puts forth an UFLS scheme characterized by increased effectiveness in the case of large disturbances and reduced disconnected power in the case of small and medium disturbances compared to the conventional load-shedding solutions. These advantages are achieved by replacing time-consuming consecutive load dropping with the simultaneous load dropping mechanism and by replacing ineffective fixed-frequency activation thresholds independent of the state of the system with implicit adaptive thresholds based on fuzzy logic computations. The proposed algorithm does not require complex and costly technical solutions. The performance of the proposed scheme was validated using multivariate computer simulations. Selected test results are included in this paper.

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Coordination of UFLS and UFGC by Application of D-SMES

Cited by 6 publications

References 8 publications

Robust power balancing scheme for the grid‐forming microgrid

Robust power balancing scheme for the grid‐forming microgrid

Improvement of the Transient Stability of Grid Connected Microgrids Including Inverter Based DGs Using DSTATCOM

Underfrequency Load Shedding: An Innovative Algorithm Based on Fuzzy Logic

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