Proposed chapter 9 for predicting voltage sags (dips) in revision to IEEE Std 493, the Gold Book

Becker, Chandler A.; Braun, W.; Carrick, K.; Diliberti, T.; Grigg, C.; Groesch, J.; Hazen, Benjamin T.; Imel, T.; Koval, D.O.; Mueller, Daniel; John, Thomas; Conrad, L.E.

doi:10.1109/28.293731

Cited by 95 publications

(18 citation statements)

References 5 publications

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“…When the output voltage and frequency are located close to their lower limitation values, they can never fall below the lower limitation value so as to limit the voltage and frequency of the system. Thus, the proposed droop control strategy can satisfy the relevant standards better [22][23][24]. With conventional droop control, the frequency and voltage magnitude are always regarded as the cut-off condition.…”

Section: Exponential-function-based Droop Control Strategymentioning

confidence: 99%

Exponential-function-based droop control for islanded microgrids

Wang

Sun

Gui

et al. 2019

J. Mod. Power Syst. Clean Energy

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An exponential-function-based droop control strategy for the distributed energy resources (DERs) is proposed to reduce the reactive power-sharing deviation, limit the minimum value of frequency/voltage, whilst improving the utilization rate of renewable energy. Both DERs and loads are interconnected to achieve a power exchange by converters, where the power management system should accurately share the active/reactive power demand. However, the proportional reactive power sharing often deteriorates due to its dependence on the line impedances. Thus, an exponential-function-based droop control is proposed to À prevent voltage and frequency from falling to the lower restraint,`achieve accurate reactive power sharing,´eliminate communication and improve the usage ratio of renewable energy. Furthermore, its stability is analyzed, and the application in islanded AC/DC hybrid microgrids is investigated to achieve the bidirectional power flow. The simulation and experimental results show that the reactive power sharing deviation can be reduced, and the utilization rate of renewable energy is improved by using the proposed method. Moreover, the simulation results illustrate that the system can maintain stable operation when the microgrid is switched from one supplied energy operation condition to another absorbed one.

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Section: Exponential-function-based Droop Control Strategymentioning

confidence: 99%

Exponential-function-based droop control for islanded microgrids

Wang

Sun

Gui

et al. 2019

J. Mod. Power Syst. Clean Energy

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“…Many papers published by middle of 1990's begin to address voltage sag impact on electronic equipment from reliability standpoint beside reinforcing and reconfirming findings on deterministic approach found previously. In [1], Becker et. al.…”

Section: Power System Models and Stochastic Analysismentioning

confidence: 99%

Electronic process equipment compatibility evaluation project for power quality enhancement - a Malaysian experience

Hamid

Nor²,

Badar³

2001

16th International Conference and Exhibition on Electricity Distribution (CIRED 2001)

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“…Voltage sags are mainly caused by short-circuit faults in the distribution power system, and most sag events may cause tripping of sensitive equipment. If a fault occurs at one of the feeders, the large fault current will cause voltage sag at the point of common coupling (PCC), and then it may bring about tripping of sensitive equipment in other industrial plants [4][5][6]. In addition, because of the load growth, many generators are necessary to be introduced into power systems, and it results in the increase of the fault current level.…”

Section: Introductionmentioning

confidence: 98%

Quasi‐bridge‐type fault current limiter for mitigating fault transient phenomena

Tseng

Chen²

2014

IET Generation, Transmission & Distribution

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This study proposes a quasi-bridge-type fault current limiter (QBT-FCL) for reducing the fault current level and the magnitude of voltage sag. Before a fault occurs, because of the voltage-compensation effect, the equivalent impedance of the QBT-FCL is very low, and hence it has almost no influence on the circuit. Therefore, the load seems to directly connect to the voltage source, and there is almost no distortion to the load voltage and current waveforms. When the fault occurs, the limiter automatically inserts the impedance into the circuit, and thus the magnitude of the fault current and voltage sag can be effectively reduced. After the fault is cleared, the limiter starts to freewheel and recovers to the normal operation state. As a result, the QBT-FCL still has a negligible effect on the circuit and is ready for the next fault occurrence. Theoretical analysis for the proposed QBT-FCL has been fully developed in this study. Finally, the feasibility and performance of the proposed limiter have been verified by the simulated and experimental results.

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Proposed chapter 9 for predicting voltage sags (dips) in revision to IEEE Std 493, the Gold Book

Cited by 95 publications

References 5 publications

Exponential-function-based droop control for islanded microgrids

Exponential-function-based droop control for islanded microgrids

Electronic process equipment compatibility evaluation project for power quality enhancement - a Malaysian experience

Quasi‐bridge‐type fault current limiter for mitigating fault transient phenomena

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