Fault current management using inverter-based distributed generators in smart grids

Rajaei, Nazila; Ahmed, Mohammed Hassan; Salama, M.M.A.; Varma, Rajiv K.

doi:10.1109/pesgm.2015.7286397

Cited by 10 publications

(32 citation statements)

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“…According to [9], in order to maintain the normal operation and protect system components, fault management and diagnosis must be fast. Fault management techniques relate more to the communication network of the SGS.…”

Section: Importance Of Fault Management and Fault Diagnosismentioning

confidence: 99%

“…In addition, it is important to detect and locate the fault in the SGS rapidly enough to avoid a complete breakdown in the system [12] [13] [14]. According to [9], there are several fault diagnosis techniques can be used in the SGS including the intelligent devices that monitor current and voltage signals in the system. Another technique to diagnose faults is using the wavelet analysis or Smart Grid and Renewable Energy Markov model analysis to analysis the latest sensing data over the system [15] [16] [17].…”

Section: Importance Of Fault Management and Fault Diagnosismentioning

confidence: 99%

“…It is important to locate the geographical position of power failure in the system to deal with it in order to keep the stability of the system after detecting a fault incident [9]. According to [10], there are several techniques are used to locate a fault in the system.…”

Section: Techniques To Locate Different Faults In the Smart Grid Systemmentioning

confidence: 99%

“…[8]. Authors in [9], state that smart meters can be used to detect and locate unsafe current and voltage signals in the system since they consider fast response devices. Since the SGS is able to operate as a stand-alone system, it is preferable to isolate the main grid from the system to protect components in the SGS upon detection of faulty conditions [4].…”

Section: Introductionmentioning

confidence: 99%

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Review of Fault Types, Impacts, and Management Solutions in Smart Grid Systems

Mousa¹,

Abdelwahed²,

Klüss³

2019

SGRE

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Fault management study in smart grid systems (SGSs) is important to ensure the stability of the system. Also, it is important to know the major types of power failures for the effective operation of the SGS. This paper reviews diverse types of faults that might appear in the SGS and gives a survey about the impact of renewable energy resources (RERs) on the behavior of the system. Moreover, this paper offers different fault detection and localization techniques that can be used for SGSs. Furthermore, a potential fault management case study is proposed in this paper. The SGS model in this paper is investigated using both of the Matlab/Simulink and the Real Time Digital Simulation (RTDS) to compute the fault management study. Simulation results show the fast response to a power failure in the system which improves the stability of the SGS.

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Section: Importance Of Fault Management and Fault Diagnosismentioning

confidence: 99%

Section: Importance Of Fault Management and Fault Diagnosismentioning

confidence: 99%

Section: Techniques To Locate Different Faults In the Smart Grid Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Review of Fault Types, Impacts, and Management Solutions in Smart Grid Systems

Mousa¹,

Abdelwahed²,

Klüss³

2019

SGRE

View full text Add to dashboard Cite

show abstract

“…This can be achieved by either triggering suitably designed protection circuits [21], [23], [24] or by using several low-voltage ride-through controllers [25], [26], which will keep injecting power to the grid with a limited current. From a control systems point of view, most of the current protection methods are based on a switching control action between the power regulation during normal grid operation and the current-limiting scheme after the fault has occurred [27], [19], [28], [29], [30], [31]. Virtual impedance methods have been also proposed in order to guarantee a given limit of the inverter current [32], [33], and can be also found in several microgrid systems [34], [35].…”

Section: Introductionmentioning

confidence: 99%

PLL-Less Nonlinear Current-Limiting Controller for Single-Phase Grid-Tied Inverters: Design, Stability Analysis, and Operation Under Grid Faults

Konstantopoulos

Zhong

Ming

2016

IEEE Trans. Ind. Electron.

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Abstract-A nonlinear controller for single-phase grid-tied inverters, that can operate under both a normal and a faulty grid with guaranteed closed-loop stability, is proposed. The proposed controller acts independently from the system parameters, does not require a phase-locked loop (PLL) and can achieve the desired real power regulation and unity power factor operation. Based on nonlinear input-to-state stability theory, it is analytically proven that the inverter current always remains below a given value, even during transients, independently from grid variations or faults (short circuit or voltage sag). The desired performance and stability of the closed-loop system are rigorously proven since the controller has a structure that does not require any switches, additional limiters or monitoring devices for its implementation. Therefore, nonlinear stability of a grid-tied inverter with a given current-limiting property is proven for both normal and faulty grid conditions. The effectiveness of the proposed approach is experimentally verified under different operating conditions of the grid.

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Fuse saving scheme in highly photovoltaic‐integrated distribution networks

Hajimohammadi

Fani

Sadeghkhani

2019

Int Trans Electr Energ Syst

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Summary The high penetration level of photovoltaic (PV) units increases their injected fault current that it may result in fuse‐recloser miscoordination in distribution networks. The conventional coordination techniques are based on shifting the fast operation curve of the recloser below the characteristic curve of the fuse for fuse saving in the case of a temporary fault. However, these techniques save fuse if the slopes of fuse and recloser characteristic curves are same. Also, in the case of the high penetration level of PV systems, the conventional schemes are not effective. To address these problems, this paper proposes two fuse saving strategies that not only modify the difference between the slopes of fuse and recloser characteristic curves but also are effective for various penetration levels of PV units in the distribution network. The proposed protection scheme does not require the communication infrastructure and can be implemented in both conventional and digital reclosers installed in the distribution network. The reliable performance of the proposed fuse saving strategies is assessed on the simulation model of the Isfahan distribution network.

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Fault current management using inverter-based distributed generators in smart grids

Cited by 10 publications

References 0 publications

Review of Fault Types, Impacts, and Management Solutions in Smart Grid Systems

Review of Fault Types, Impacts, and Management Solutions in Smart Grid Systems

PLL-Less Nonlinear Current-Limiting Controller for Single-Phase Grid-Tied Inverters: Design, Stability Analysis, and Operation Under Grid Faults

Fuse saving scheme in highly photovoltaic‐integrated distribution networks

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