Impact of Distributed Generation on Fault Locating Methods in Distribution Networks

Ebrahimi, Esmaeil; Ghanizadeh, AJ; Rahmatian, M.; Gharehpetian, Gevork B.

doi:10.24084/repqj634

Cited by 14 publications

(4 citation statements)

References 13 publications

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“…The penetration of DGs in distribution grid has changed the radial structure and consequently, the direction and amplitude of the fault current [28]. DGs have a certain degree of influence on the accuracy of distribution grid fault location [13,15,29].…”

Section: Fault Location Performance With Distributed Generation (Dg) ...mentioning

confidence: 99%

A subsystem‐based fault location method in distribution grids by sparse measurement

Lv,

Yuan,

Cheng

et al. 2023

IET Generation Trans & Dist

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With the development of smart meters and other intelligent electronic devices, more and more data‐driven fault location methods based on wide area measurement are emerging. However, these diagnostic methods for dealing with the whole tested system often appear complex. This paper presents an innovative subsystems‐based fault location strategy in distribution grid by the sparsity promoted Bayesian learning algorithm. To avoid taking measurement for the whole distribution system, the fault‐included subsystem is selected according to the distribution characteristics of negative sequence voltage. Then the data for fault location is measured by allocating meters in subsystem, which can reduce the number of required meters. For accurately estimating the fault location, a sparse prior is proposed for the Bayesian learning, which could improve the accuracy of the fault location algorithm by about 4%. The performance is tested on a 12.66‐kV, 69‐bus distribution system in response to various fault scenarios. The results show that the accuracy of the proposed method for the fault section location can reach 90%. It also verifies the robustness and accuracy for fault line location, faced different fault types, fault resistance, noise, etc.

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Section: Fault Location Performance With Distributed Generation (Dg) ...mentioning

confidence: 99%

A subsystem‐based fault location method in distribution grids by sparse measurement

Lv,

Yuan,

Cheng

et al. 2023

IET Generation Trans & Dist

View full text Add to dashboard Cite

show abstract

“…However, on the distribution system, the connection of DGs at multiple locations creates the problem of in‐feeds that may cause the impedance presented to an upstream relay to be higher than the actual [52], causing the relay to under‐reach. In addition, this method may not function correctly with inverter‐interfaced DGs that limit the fault current to a fixed level, in which case the fault current presented to the relay is independent of fault location [53].…”

Section: Current Magnitude‐based Protection Strategiesmentioning

confidence: 99%

Review of technical issues influencing the decoupling of DG converter design from the distribution system protection strategy

Manditereza

Bansal

2018

IET Renewable Power Generation

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Several issues need to be considered in the design and control of converters for converter-interfaced distributed generators (DGs). Under fault conditions, the semiconductor devices withstand ratings must not be exceeded. The converter control strategy is also required to facilitate fault ride through (FRT) capability. On the other hand, protection against fault is better served by employing control strategies that allow the converter-interfaced DGs to contribute short duration fault current sufficient to aid the detection of faults. Semiconductor devices protection and FRT capability have the same objective of limiting the magnitude of the fault current. Protection coordination in the complex DG-integrated network is difficult and may result in protection settings that are not optimal or contribute to long relay operating times that may impact FRT support. On this basis, this study proposes the de-coupling of the protection solution from FRT and semiconductor device considerations. This study critically reviews various strategies proposed in the literature for the protection of the DG-integrated distribution system and develops an argument that aims to influence a paradigm shift towards voltage-based protection that may see protection design decoupled from inverter design and control, since fault current contribution may not be required to achieve effective protection.

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“…However, the connection of DGs at multiple locations creates problems of in‐feeds that may cause the impedance relays to under‐reach [15]. Additionally, this method may not function correctly with inverter‐interfaced DGs that limit the fault current to a fixed level [16].…”

Section: Introductionmentioning

confidence: 99%

Fault detection and location algorithm for DG‐integrated distribution systems

Manditereza

Bansal

2018

J. eng.

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Impact of Distributed Generation on Fault Locating Methods in Distribution Networks

Cited by 14 publications

References 13 publications

A subsystem‐based fault location method in distribution grids by sparse measurement

A subsystem‐based fault location method in distribution grids by sparse measurement

Review of technical issues influencing the decoupling of DG converter design from the distribution system protection strategy

Fault detection and location algorithm for DG‐integrated distribution systems

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