A Classification Technique for Recloser-Fuse Coordination in Distribution Systems With Distributed Generation

Naiem, A. F.; Hegazy, Yasser G.; Abdelaziz, Almoataz Y.; El-Sharkawy, Mohamed

doi:10.1109/tpwrd.2011.2170224

Cited by 113 publications

(102 citation statements)

References 17 publications

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“…The constant a is the slope of the straight line on I 2 t log-log graph. It is practically accepted that all fuses of an EDN have the same value of a [3]. In order to calculate b, first a three-phase fault is applied at the end of the protected lateral and the fault current of the fuse and the recloser is obtained.…”

Section: Conventional Fuse Saving Schemementioning

confidence: 99%

“…In order to calculate b, first a three-phase fault is applied at the end of the protected lateral and the fault current of the fuse and the recloser is obtained. Then, the fuse operating time is calculated by [3]:…”

Section: Conventional Fuse Saving Schemementioning

confidence: 99%

“…Figure 2 The maximum load current through the recloser is 120.2 A. I set for the recloser is set at 1.5 times the maximum load current [3], i.e. 180.3 A. TDSs of the recloser for slow and fast operations are set to 1.5 and 0.5, respectively [3].…”

Section: Test Systemmentioning

confidence: 99%

“…For the fuse modelling, it is assumed that all the fuses have the same "a" parameter equals to -1.8 [3]. In order to obtain the "b" parameter, a three-phase fault is applied at the end of the protected lateral and the fault current of the fuse and the recloser are obtained.…”

Section: Test Systemmentioning

confidence: 99%

“…In [3,4] a complete study is carried out on a test EDN to find the best DG locations and also the best recloser setting to minimise the loss of coordination between the fuse and the recloser under different fault conditions. In order to achive the best location and size of DG, different cases must be studied by changing DG size and location for each possible fault location.…”

Section: Introductionmentioning

confidence: 99%

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Self-Adaptive Relaying Scheme of Reclosers for Fuse Saving in Distribution Networks with DG

Jamali¹,

Borhani-Bahabadi²

2017

IJPER

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Abstract. With growing penetration of distributed generation (DG) in electrical distribution networks (EDNs), miscoordination between fuse and recloser is more likely. This is the result of change of direction, as well as the magnitude of the fault current in the presence of DG where fuse saving cannot be achievd with standard recloser characteristics. This paper proposes a self-adaptive relaying scheme of reclosing operation for fuse saving in EDNs with DG. The recloser is programmed with a new non-standard characteristic using only the local voltage and current magnitude measurements. The proposed relaying scheme is tested for various fault conditions in a 20 kV Iranian radial EDN containing DG units at different locations. It is shown that the proposed scheme is not affected by the presence of DG units whereas the conventional relays fail the protection coordination. The proposed characteristic maintains proper recloser-fuse coordination for all fault types and different DG conditions. Keywords: Fuse saving, distributed generation, electric distribution network, non-communication protection, self-adaptive relaying scheme IntroductionFuse saving is a common protection strategy that prevents nuisance fuse blowing during transient faults by fast operation of the recloser located at the head of a feeder before the blown up of its downstream fuses. After a predefined time, enough for the fault clearance, the recloser reenergises the feeder and restores the power supply. Since 50% to 80% of faults occurring in electrical distribution networks (EDNs) have transient nature [1], the fuse saving strategy can improve the system security and reliability. By incorporation of distributed generation (DG) units in EDNs, the fault current level and direction can change and cause miscoordination between the recloser and its downstream fuses. The fault current passing through the recloser decreases and at the same time the fuse fault current increases because of the DG contribution to the fuse fault current [2]. Therefore, the fuse may blow up before the fast operation of the recloser.Several methods are presented in the literature for fuse-recloser coordination in the presence of DG. In [3, 4] a complete study is carried out on a test EDN to find the best DG locations and also the best recloser setting to minimise the loss of coordination between the fuse and the recloser under different fault conditions. In order to achive the best location and size of DG, different cases must be studied by changing DG size and location for each possible fault location. This method needs to be tailored for each EDN individually. In addition, any change in the number of DG units, can cause a miscoordination between the recloser and fuses. Thus, it may be very time consuming or even infeasible to find the best DG location and related recloser setting for large EDNs.The method of [5] uses power electronic switches to disconnect all DG units after a fault inception and before any fuse blow up. This method does not require any upgrade of the prote...

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Section: Conventional Fuse Saving Schemementioning

confidence: 99%

Section: Conventional Fuse Saving Schemementioning

confidence: 99%

Section: Test Systemmentioning

confidence: 99%

Section: Test Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Self-Adaptive Relaying Scheme of Reclosers for Fuse Saving in Distribution Networks with DG

Jamali¹,

Borhani-Bahabadi²

2017

IJPER

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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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Sustainable protection coordination in presence of distributed generation with distributed network

Rizwan

Hong

Waseem

et al. 2019

Int Trans Electr Energ Syst

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Summary The distributed generation (DG) is getting extensively integrated in existing power distribution system because of the massive development in green energy technologies and their economical, technical, and environment benefits. However, apart from beneficial aspects, DGs also have various and complex technical limitations, major of which are loss of protection coordination among protection devices which can lead to malfunctioning of protection devices, blind protection, fuse blowing, and permanent outage of power supply due to temporary faults. In this paper, a novel curve fitting technique is designed to restore much influenced recloser‐fuse coordination using the directional properties of midline recloser for upstream and downstream protection devices coordination. It also works on fuse‐saving scheme. Using Electrical Transient Analysis Program (ETAP) Software, the proposed methodology is implemented on a real 11 kV Rajewala radial distribution feeder starting from 132 kV Eimnabad grid station, district Gujranwala, Pakistan. Present here are some key results. Different case studies are carried out and results validate the effectiveness of the proposed methodology, and the coordination among protection devices is sustained even after DGs integration in the system.

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A Classification Technique for Recloser-Fuse Coordination in Distribution Systems With Distributed Generation

Cited by 113 publications

References 17 publications

Self-Adaptive Relaying Scheme of Reclosers for Fuse Saving in Distribution Networks with DG

Self-Adaptive Relaying Scheme of Reclosers for Fuse Saving in Distribution Networks with DG

Fuse saving scheme in highly photovoltaic‐integrated distribution networks

Sustainable protection coordination in presence of distributed generation with distributed network

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