A Protection Coordination Index for Evaluating Distributed Generation Impacts on Protection for Meshed Distribution Systems

Zeineldin, H. H.; Mohamed, Yasser Abdel-Rady I.; Khadkikar, Vinod; Pandi, V. Ravikumar

doi:10.1109/tsg.2013.2263745

Cited by 138 publications

(62 citation statements)

References 23 publications

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“…In [96], the application of evolutionary algorithms and linear programming solver are discussed for identifying the location of FCL and size in DER connected distribution systems without violating the protection constraints. Protection coordination strategy for DER connected meshed distribution systems is also analysed with the help of user-defined time inverse characteristics of directional inverse time overcurrent relays [97,98]. In [99], another technique is proposed to maximize the penetration level of utility owned inverter based DER into distribution system under standard harmonic limits and protection coordination constraints.…”

Section: Real-time Implementation Challengesmentioning

confidence: 99%

Protection coordination in distribution systems with and without distributed energy resources- a review

Singh

2017

Prot Control Mod Power Syst

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Emission of greenhouse gases and depletion of fossil fuel reserves are two key drivers, which are forcing the mankind to generate the future energy demand from the renewable energy resources. These resources are generally distributed in nature and are directly integrated at distribution levels. Increasing penetration of the distributed energy resources in distribution power networks creates additional operational and control issues. These are mostly regulatory, economical load dispatching, power quality and protection issues. Generally power distribution systems are protected with the help of dedicated over current based protection schemes. But increasing share of distributed energy resources penetration in electric utilities poses a serious threat to the existing protection coordination schemes of the distribution systems. Distributed energy resources connected distribution networks become interconnected in nature and protection coordination schemes, which are designed for unidirectional flow of fault currents become ineffective/non-functional. Therefore, new protection coordination schemes are required for providing the adequate protection coordination for distributed energy resources connected electric power networks. In the available literature, the protection coordination schemes for radial distribution systems and developments in the area of protection coordination are discussed in detail. A thorough review for all these protection coordination schemes for distribution systems with and without distributed energy resources is done in this review article. It includes the analytical and artificial intelligence based techniques application for coordination of protective relays in the distribution systems. The limitations and research gaps in the area of protection coordination schemes are also presented in this review article. The aim of this research paper is to bring all the available research in the area of relay coordination on one platform, so that it will help the emerging researcher to identify the future scope of relay coordination application for distributed energy resources connected distribution systems.

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Section: Real-time Implementation Challengesmentioning

confidence: 99%

Protection coordination in distribution systems with and without distributed energy resources- a review

Singh

2017

Prot Control Mod Power Syst

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“…Since the operation time of the relay/recloser is an inverse function of the fault current seen by the device [19], and TCC characteristic can be expressed as shown in (1), an optimization process based on [20][21] is adopted to define the fast relay/recloser settings such that the proper coordination can be maintained under all cases. The slow relay/recloser settings are fixed at the same settings as in the fuse-clearing scheme.…”

Section: Saving Schemementioning

confidence: 99%

Methodology of Automated Protection Analysis for Large Distribution Feeders With High Penetration of Photovoltaic Systems

Tang

2017

IEEE Power Energy Technol. Syst. J.

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This paper presents highly automated methods to study the protective device coordination in large distribution systems with high penetration of distributed photovoltaic (PV) generation. A real distribution feeder with large-scale distributed PV generation has been modeled and verified using the analysis tool OpenDSS and utilizing extensive field measurements. With the accurate and validated feeder model, thorough protection coordination of the system is investigated by applying all the possible phase and ground faults under various scenarios. Under varying PV penetration levels and with different PV interface transformer connections, settings for the phase and ground relay and recloser are verified/defined such that proper coordination is achieved for the entire feeder under all operating conditions, corresponding to both fuse-clearing and fuse-saving schemes. An optimization-based design of protective devices is introduced that ensures proper protection coordination under thousands of possible fault cases. The automated protection analysis has been implemented using OpenDSS with MATLAB COM interface, and this approach and tools can be extended to analyze and design protection coordination of any large distribution feeder, as well as to use as a screening tool while evaluating large scale PV on distribution feeders.

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“…For the sake of fixing relays settings for meshed distribution systems in both cases of with and without DG addition, it is proposed in [11] to ensure maximization of allowable DG penetration level at each bus based on measuring the rate of change of the maximum DG penetration level with respect to the rate of change of coordination time interval which can serve as an effective measure of DG impacts on relays coordination.…”

Section: Introductionmentioning

confidence: 99%

New Coordination Approach to Minimize the Number of Re-adjusted Relays When Adding DGs in Interconnected Power Systems

Ibrahim¹,

Zahab²,

Mostafa³

2017

Journal of Electrical Engineering and Technology

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-The presence of DGs in power system networks tends to negatively affect the protective relays coordination. The proposed method introduces an approach to minimize the numbers of relays that acquire new settings on contrary to their original settings (case without DG), to achieve relays coordination in case of adding DG, since relays coordination with minimum number of relays of readjusted settings represents economical target, especially in networks containing mixture of electromechanical and adaptive digital relays. The scheme decides the possible minimum number of re-adjusted relays and their locations in an optimum manner to achieve proper relays coordination in case of adding DGs. The proposed approach is divided into two successive phases; the first phase is stopped when the first relays coordination solution is achieved. The second phase increases the possibility to keep higher number of relays at their original settings than that obtained in first phase through achieving multi solutions of relays coordination. The proposed approach is implemented and effectively tested on the well-known IEEE-39 bus test system.

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A Protection Coordination Index for Evaluating Distributed Generation Impacts on Protection for Meshed Distribution Systems

Cited by 138 publications

References 23 publications

Protection coordination in distribution systems with and without distributed energy resources- a review

Protection coordination in distribution systems with and without distributed energy resources- a review

Methodology of Automated Protection Analysis for Large Distribution Feeders With High Penetration of Photovoltaic Systems

New Coordination Approach to Minimize the Number of Re-adjusted Relays When Adding DGs in Interconnected Power Systems

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