Fault Current Contribution From Synchronous Machine and Inverter Based Distributed Generators

Nimpitiwan, N.; Heydt, G.T.; Ayyanar, Raja; Suryanarayanan, Siddharth

doi:10.1109/tpwrd.2006.881440

Cited by 256 publications

(117 citation statements)

References 7 publications

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“…When DG was installed in the network, the network impedance matrix changed; the DG impedance is added between the node and ground so one row and one column are added to the network impedance matrix as shown in Eq. (2). By setting DG voltage to zero, a new impedance matrix would be achieved by omitting the DG's row and column (shown in Eq.…”

Section: System Study and Formulation Analysismentioning

confidence: 99%

“…Synchronous-based DG has high fault current contribution as opposed to inverter-based DG and consequently has more impact on protective device coordination [2]. To mitigate DG's impacts on the traditional protection scheme, several methods have been proposed, like limiting DG capacity; modifying the protection system based on using extra circuit breakers, reclosers, and relays; using adaptive protection; and utilizing fault current limiters (FCLs) [3].…”

Section: Introductionmentioning

confidence: 99%

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The effect of fault current limiter size and type on current limitation in the presence of distributed generation

Chabanloo¹,

Habashi²,

Farrokhifar³

2017

Turk J Elec Eng & Comp Sci

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Abstract:One of the effective mitigation solutions of the problems due to the penetration of distributed generation (DG) into the distribution network is a fault current limiter (FCL). Main attention is given to designs for resistive and inductive FCLs and others should meet the same requirements. At first in this paper network analysis is used to determine a suitable type of limiting impedance of a FCL in a distribution network in the presence of DG and then a comparative study of resistive, inductive, and complex FCLs is conducted to show the effect of size and type of FCL on the amplitude and phase of DG and network fault current. To illustrate the impact of FCLs on relay coordination restoration, an optimization algorithm is used to determine the minimum size of FCL and subsequently the role of FCL impedance type on the coordination time interval of the main and backup relays in a sample IEEE typical distributed network is investigated. Simulations are carried out by programming in MATLAB and the obtained results are reported and discussed.

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Section: System Study and Formulation Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effect of fault current limiter size and type on current limitation in the presence of distributed generation

Chabanloo¹,

Habashi²,

Farrokhifar³

2017

Turk J Elec Eng & Comp Sci

View full text Add to dashboard Cite

show abstract

“…Therefore, studying the fault characteristics of grid-connected PV systems and their impact on grid protection is of great significance [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Ground-Fault Characteristic Analysis of Grid-Connected Photovoltaic Stations with Neutral Grounding Resistance

et al. 2017

Energies

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Abstract:A centralized grid-connected photovoltaic (PV) station is a widely adopted method of neutral grounding using resistance, which can potentially make pre-existing protection systems invalid and threaten the safety of power grids. Therefore, studying the fault characteristics of grid-connected PV systems and their impact on power-grid protection is of great importance. Based on an analysis of the grid structure of a grid-connected PV system and of the low-voltage ride-through control characteristics of a photovoltaic power supply, this paper proposes a short-circuit calculation model and a fault-calculation method for this kind of system. With respect to the change of system parameters, particularly the resistance connected to the neutral point, and the possible impact on protective actions, this paper achieves the general rule of short-circuit current characteristics through a simulation, which provides a reference for devising protection configurations.

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“…1 shows configuration of the proposed FRT scheme of the VSI system. The model of the VSI for the purpose of the fault analysis can be made up under an assumption that the DC input voltage of the inverter is essentially fixed in the time frame 0-1.0 s [34]. This voltage is shown with VDC in Fig.…”

Section: Introductionmentioning

confidence: 99%

Efficient fault ride-through scheme for three phase voltage source inverter-interfaced distributed generation using DC link adjustable resistive type fault current limiter

et al. 2016

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The VSIs employ semiconductor devices (SDs) with limited over current withstand capability that usually is within the range of 1-2 times of nominal current [8]. The VSI is inherently very sensitive to the grid faults. Thus, the fault condition can either trip Reference [7] has presented simulation and experimental results of a varistor based-short circuit fault protection scheme for series active power filters. The number of elements in the mentioned protection method like series current transformers and the semiconductor switches increase the cost. Also, the VSI is disconnected after a few cycles the fault happened, which does not comply the new grid codes [18]. Some control approaches for inverter-interfaced distributed energy resources are proposed in [19] and [20] to limit inverter fault current and improve their fault ride-through (FRT) capability. However, these methods cannot be suitable for long lasting zero grid voltage. In [21], an inverter fault current limitation strategy has been introduced in a micro- , a control strategy has been proposed to enhance the voltage support as an ancillary service of the VSIs to meet the grid codes requirements, which needs complicated control system. A fault protection scheme against the short-circuit fault on the load side for the high-power three-phase inverters has been studied in [26] to provide high reliability for sensitive loads during transient faults. In the mentioned study, not only the malfunction of the inverter has not been considered but also it is required to change the strategy of the VSI from the VCS to the

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Fault Current Contribution From Synchronous Machine and Inverter Based Distributed Generators

Cited by 256 publications

References 7 publications

The effect of fault current limiter size and type on current limitation in the presence of distributed generation

The effect of fault current limiter size and type on current limitation in the presence of distributed generation

Ground-Fault Characteristic Analysis of Grid-Connected Photovoltaic Stations with Neutral Grounding Resistance

Efficient fault ride-through scheme for three phase voltage source inverter-interfaced distributed generation using DC link adjustable resistive type fault current limiter

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