Line Loss Reduction by Distribution System Upgrading from Radial to Normally Closed-Loop Arrangement

Huang, Wei-Tzer; Chen, Shiuan-Tai

doi:10.1109/his.2009.281

Cited by 8 publications

(5 citation statements)

References 12 publications

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“…20 kV/0.4 kV were without supply in the cases of faults when the proposed protection scheme, that fully supports permanent closed-loop operation and disconnects only the faulted line sections between relays were used. Moreover, the results also show how many customers and transformers 20 kV/0.4 kV Definition of CTI for a relay pair: operating time vs. fault location (a) and current vs. operating time (b) ifferential Evolution (DE) [10] based (3) is the penalty. More details will be The results presented in this paper were obtained for the protection system realization without the exchange of GOOSE ], emphasizing the exchange of GOOSE loop operation's performance with the proposed protection scheme is summarized in Table II, where the time, appeared between individual relays (R) marked in Fig.…”

Section: Resultsmentioning

confidence: 99%

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Permanent Closed-Loop Operation as a Measure for Improving Power Supply Reliability in a Rural Medium-Voltage Distribution Network

Stumbrger

2023

REE&PQJ

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Power supply reliability is one of the critical elements of power quality. Its improvement in medium voltage distribution systems in urban areas is typically achieved by cabling. Unfortunately, this approach is often too expensive to be applied in rural areas. One of the possible alternative solutions that can be used in rural medium voltage distribution networks is permanent closed-loop operation. It requires the introduction of additional reclosers with properly parametrized protection relays enabling directional protection. This paper focuses on the case study performed in the 20 kV rural distribution network of Elektro Celje d.d.. Two feeders, where the reliability of the power supply was low, were analyzed. Results of techno-economical evaluation eliminated cabling as a viable solution. The permanent closed-loop operation was selected and implemented after proper placement and parameterization of relays with directional protection functions. The results of two years operation in permanent closed-loop arrangement of feeders show substantial improvement in the reliability of power supply.

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Section: Resultsmentioning

confidence: 99%

“…The feasibility study regarding the transition from permanent open-loop to the permanent closed-loop operation of feeders is given in [2]. The reduction in line losses and harmonic distortion that can be achieved in this way is discussed in [3], [4]. The load flow control and voltage profile-related problems are discussed in [5] and [6].…”

Section: Introductionmentioning

confidence: 99%

Permanent Closed-Loop Operation as a Measure for Improving Power Supply Reliability in a Rural Medium-Voltage Distribution Network

Stumbrger

2023

REE&PQJ

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“…Paper [4] investigates the possibility for reduction of line losses by upgrading the distribution system from radial to closedloop arrangement of feeders.…”

Section: Introductionmentioning

confidence: 99%

The impact of feeders in closed-loop arrangement on harmonic distortion and power losses

Deželak¹,

Rošer²,

Škof³

et al. 2024

RE&PQJ

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Abstract. This paper deals with the power losses and power quality in the medium-voltage distribution network considering feeders in the open-and closed-loop arrangements. The feeders in the open-loop arrangement are changed to the closed-loop arrangement with the aim to improve reliability of the power supply. Apart from that the power quality could be increased, while power losses could be decreased. In the case study the feeders supply loads, while in some cases loads are replaced with the renewable source of energy.

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Section: Introductionmentioning

confidence: 99%

Permanent Closed-Loop Operation as a Measure for Improving Power Supply Reliability in a Rural Medium Voltage Distribution Network

Štumberger¹,

Rošer²,

Polajžer³

2024

RE&PQJ

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Power supply reliability is one of the critical elements of power quality. Its improvement in medium voltage distribution systems in urban areas is typically achieved by cabling. Unfortunately, this approach is often too expensive to be applied in rural areas. One of the possible alternative solutions that can be used in rural medium voltage distribution networks is permanent closed-loop operation. It requires the introduction of additional reclosers with properly parametrized protection relays enabling directional protection. This paper focuses on the case study performed in the 20 kV rural distribution network of Elektro Celje d.d.. Two feeders, where the reliability of the power supply was low, were analyzed. Results of techno-economical evaluation eliminated cabling as a viable solution. The permanent closed-loop operation was selected and implemented after proper placement and parameterization of relays with directional protection functions. The results of two years operation in permanent closedloop arrangement of feeders show substantial improvement in the reliability of power supply.

show abstract

Line Loss Reduction by Distribution System Upgrading from Radial to Normally Closed-Loop Arrangement

Cited by 8 publications

References 12 publications

Permanent Closed-Loop Operation as a Measure for Improving Power Supply Reliability in a Rural Medium-Voltage Distribution Network

Permanent Closed-Loop Operation as a Measure for Improving Power Supply Reliability in a Rural Medium-Voltage Distribution Network

The impact of feeders in closed-loop arrangement on harmonic distortion and power losses

Permanent Closed-Loop Operation as a Measure for Improving Power Supply Reliability in a Rural Medium Voltage Distribution Network

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