FLISR Approach for Smart Distribution Networks Using E-Terra Software—A Case Study

Le, Duy; Bùi, Dương Minh; Ngo, Cao Cuong; Le, Anh My Thi

doi:10.3390/en11123333

Cited by 28 publications

(20 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…where N RP is the number of all the relay pairs. The operating times t (p,r) and t (b,r) should be calculated using (1), where currents that correspond to the fault location given by the primary OCRs should be used ( Fig. 2a).…”

Section: Timing Coordinationmentioning

confidence: 99%

“…The test currents were varied within the range 1.2 to 5 times the pickup-current setting. The IEC extremely-inverse characteristic was tested, where I Pj = 500 A and T Dj = 10 ms. Time delays were determined for the model and for an actual protection unit as the difference between the measured operating times and the operating times obtained by (1). The time delays were shorter at higher currents for the protection model, as well as for an actual protection unit.…”

Section: ) Bi-directional Rsc Modelmentioning

confidence: 99%

“…This is normally evaluated by the system indices SAIFI (System Average Interruption Frequency Index) and SAIDI (System Average Interruption Duration Index). A well-known solution for the improvement of system indices is fault location, isolation, and selfrestoration procedures [1]. Feeders in radial or closed-loop arrangements, equipped with properly placed and adjusted protection Relays with Switching Capability (RSCs),…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Protection of MV Closed-Loop Distribution Networks With Bi-Directional Overcurrent Relays and GOOSE Communications

et al. 2019

View full text Add to dashboard Cite

This paper proposes measures to improve the protection of MV distribution networks operating with feeders in a closed-loop arrangement. Bi-directional overcurrent relays (OCRs) are discussed, the selectivity of which is achieved through the timing coordination of their operation. The classic approach is formulated as a minimization of the operating times of all the OCRs. The proposed approach enhances the selectivity by considering the maximum operating time of substation OCRs and the unwanted trips of in-loop OCRs. Moreover, the sensitivity is also increased by introducing an objective function that minimizes the pickup-current settings of all the OCRs together with their operating times. Furthermore, to fulfill the demanding requirements for operating times, variable penalties are introduced. Thus, the optimization procedure is forced towards the region with viable solutions for the optimization problem. Two variants of self-adaptive differential evolution have been used that both show better convergence when compared to the classic differential evolution. Moreover, ten mutation strategies were tested, where ''rand/1/bin'' showed the best results. A comparison with other methods for timing coordination shows that the proposed optimization results in a comparable value for the OCRs' operating times. In order to further reduce the operating times, GOOSE communications between the OCRs are adopted. The proposed measures for improved protection operation are fully confirmed through dynamic simulations of the faults in the discussed 20-kV network. Moreover, the proposed protection design is already implemented and permanently operates in a 20-kV network with more than 5000 customers, whereas the field results show selective and reliable protection operation.

show abstract

Section: Timing Coordinationmentioning

confidence: 99%

Section: ) Bi-directional Rsc Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Protection of MV Closed-Loop Distribution Networks With Bi-Directional Overcurrent Relays and GOOSE Communications

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Reinders [22] focuses on the reliability of electricity supply at three different locations in Indonesia by comparing reported energy reliability indices (SAIFI and SAIDI). A common FLISR approach is to use error indicator (FI) signals with distribution network states [23].…”

Section: Introductionmentioning

confidence: 99%

Management of Smart Switchboard Placement to Enhance Distribution System Reliability

et al. 2020

View full text Add to dashboard Cite

One way of handling short-time short-circuits without causing equipment failure is the management of the reclose function integrated into smart switchboard which is described in this article. Due to the cost of the application, the optimal placement of such equipment must be well-planned. During the planning of the placement optimization of a low-voltage electricity network quality, the increase of the consumer supply security must be considered along with the best economic utilization. The research presented in this article aims to introduce a new special decision support methodology calculated with these variables. The management of smart switchboard (SSB) tool installation into low voltage (LV) network was investigated. The selection of the placement nodes is based on the complex investigation of the network characteristics. Investigation is performed by empiric analysis. This method can support the power companies to make the optimal decision. The presented new device can have outstanding importance for the electric industry and for further research as no testing results of such investigations have been published yet. 101 Narimani et al. [20] provides a framework for the allocation of a central electricity storage facility 102 (EES) in discrete communities, which is created as segmentation along rural energy supplies where 103 the installation of cross connectors is not economical or even feasible. Modeling of the impact of 104 automation failure on distribution system reliability is presented in paper [21]. Reinders [22] focuses 105 on the reliability of electricity supply at three different locations in Indonesia by comparing reported 106 energy reliability indices (SAIFI and SAIDI). A common FLISR approach is to use error indicator (FI) 107 signals with distribution network states [23].108 2. The Smart Switchboard 109 The smart switchboard (SSB) developed by AD&TE is a low voltage distribution switchboard 110 which, under the described maintenance and operational circumstances during its entire life cycle 111 and without the partial or total change of the equipment, interrupts the overcurrent or the short-112 circuit current up to the value defined by the manufacturer, compliant to the applicable standards.113 The SSB detects the overcurrent with the combined usage of the local measure-and evaluation system 114 [24]. The operation happens according to the predefined current-time curve. The equipment is 115 remote, thus the existence of tension (yes/no) at each measuring point, the effective and inefficient 116 current components, the tension and the calculated performance data based on tension-with the 117 application of the security protocols in the related standards-is forwarded to a centre by using 118 wireless communication. The SSB can be operated remotely, accordingly, it is suitable for performing 119 remote switching operations. In order to the secure feasibility of the planned tasks the remote 120 operation can be blocked in-site and has visible breakdown point and earthing possibility. The 121 eq...

show abstract

“…This approach consists of creating a model that can determine the constraints of the conductor to avoid damage so that high voltage feeders can be protected. Le et al [21] developed a case study on smart distribution networks that consists of detecting, locating and isolating faults on the electrical system. Through the proposed strategy, service restoration, self-healing and fault indicator are added to increase the reliability and performance of distribution networks.…”

Section: Introductionmentioning

confidence: 99%

Recloser based energy exposure assessment of a distribution network

Thomas

Zyl

Naidoo

et al. 2019

J. energy South. Afr.

View full text Add to dashboard Cite

The optimised placement of reclosers on a distribution network is known to improve the reliability of a power system. Furthermore, the protection settings on distribution systems rely heavily on the number and placement of such reclosers. This study examined the effect of using protection settings methodology with the placement of reclosers to ameliorate the damage sustained during faults on a distribution network. The aim of the study was to determine whether this ‘damage control factor’ should be a future consideration for recloser placement. It has been found that the determination of the number and placement of reclosers, which are the function of the energy exposure of feeder, helped to optimise the operation and reliability of a distribution network. This could benefit both energy users and energy suppliers, who often face different challenges during the fault levels on the network.

show abstract

FLISR Approach for Smart Distribution Networks Using E-Terra Software—A Case Study

Cited by 28 publications

References 53 publications

Protection of MV Closed-Loop Distribution Networks With Bi-Directional Overcurrent Relays and GOOSE Communications

Protection of MV Closed-Loop Distribution Networks With Bi-Directional Overcurrent Relays and GOOSE Communications

Management of Smart Switchboard Placement to Enhance Distribution System Reliability

Recloser based energy exposure assessment of a distribution network

Contact Info

Product

Resources

About