Estimating life-cycle energy payback ratio of overhead transmission line toward low carbon development

Dong, Xiaoming; Chen, Kang; Zhang, Ning; Yan, Haowen; Jin, Meng; Niu, Xinsheng; Tian, Xin

doi:10.1007/s40565-014-0082-y

Cited by 6 publications

(4 citation statements)

References 21 publications

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“…In electric railway transportation systems, electric current is transmitted through the overhead contact line to the train and returned to the traction power substation through running rails [42] as shown in Figure 4. Due to the electrical resistance of the overhead contact line [9], [21] and imperfect insolution to the ground [22], a part of the current drawn by the vehicles from the traction power substation will leak out of the current return circuit. Based on this, we simply usē…”

Section: Sparse Optimization Modellingmentioning

confidence: 99%

“…With ever-increasing energy consumption in metro railway systems, energy-efficient timetabling has attracted more and more attention from both academic and industrial communities, see several survey papers [1], [27], [30], [39] and a more recent paper by Wang and Goverde [29]. It is known that the regenerative braking energy will be fed back into the overhead contact line and then be utilized for adjacent accelerating trains in a short period before being wasted by heating resistors installed on the overhead contact line [9], [21]. The net energy consumption turns out to be the difference between the total required tractive energy and the total utilization of regenerative braking energy.…”

Section: Introductionmentioning

confidence: 99%

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An ${\ell}_{0}$ -Norm Minimization for Energy-Efficient Timetabling in Subway Systems

Luo

Xia

2019

IEEE Access

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In this paper, a sparse optimization model with 0-norm and the squared 2-norm as the objective function is proposed for energy-efficient timetabling in subway systems by means of improving the regenerative braking energy utilization. Optimality analysis is addressed for the proposed sparse optimization problem. Specifically, the local minimizer is shown to be a KKT point without any additional constraint qualification. Moreover, based on the hard-thresholding operator, we yield an explicit formula for the Lagrangian dual problem for the proposed non-convex discontinuous optimization problem and achieve the strong duality under the stationarity condition. To evaluate the effectiveness of our proposed model for the energy-efficient timetabling, we design a hard-thresholding based alternating direction method of multipliers for solving the proposed model. The case study on Beijing Metro Yizhuang Line is conducted and the comparison to some recent existing approaches illustrates the effectiveness of our model in terms of energy saving rate and the efficiency of our proposed algorithm in terms of computation time. INDEX TERMS 0-norm minimization, hard-thresholding operator, energy-efficient timetabling, optimality analysis, alternating direction method of multipliers. ZIYAN LUO was born in Hunan, China, in 1983. She received the Ph.D. degree in operations research and cybernetics from

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Section: Sparse Optimization Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An ${\ell}_{0}$ -Norm Minimization for Energy-Efficient Timetabling in Subway Systems

Luo

Xia

2019

IEEE Access

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“…The design of a TL usually involves optimization to minimize the capital costs by considering the thermal, mechanical, electrical, and environmental constraints [8][9][10]. Moreover, the problem 2 of 26 formulation could consider the minimization of the payback time of the power line [11][12][13], as well as a life-cycle costing [14].…”

Section: Introductionmentioning

confidence: 99%

Evaluation Study of Potential Use of Advanced Conductors in Transmission Line Projects

Beryozkina

2019

Energies

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Transmission networks recently faced new technical and economic challenges. The direct use of advanced technologies and modern methods could solve these issues. This paper discusses the potential application of straightforward technology such as high-temperature low-sag conductors (HTLScs) as an additional measure for the protection and effective operation of overhead power lines. An evaluation was conducted to determine an approach for selecting the cross-sectional area and type of conductor with respect to a fault current limitation. It showed the potential benefits of using HTLScs based on an assessment of the throughput capacity and up-front capital costs. A case study considered two scenarios: the construction of a new power line and reconductoring of the existing one. The data for a real project with two overhead power lines were used. The obtained results are analyzed and discussed in detail in this paper.

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“…Most large‐scale wind power bases in China are located far from load centers . Consequently, wind power‐generated electric power is frequently delivered through long‐distance, high‐voltage transmission lines.…”

Section: Introductionmentioning

confidence: 99%

Faulty phase active power characteristics‐based adaptive single‐phase reclosing schemes for shunt reactors‐compensated wind power outgoing line

Chao

Fan³

et al. 2019

Wind Energy

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This paper proposes two novel adaptive single‐phase auto‐reclosing (ASPAR) schemes for shunt reactors‐compensated wind power outgoing (WPO) line. After extinction of a fault on a single phase‐tripped WPO line, due to the existence of shunt reactors and distributed capacitors, a free frequency component will emerge in the tripped faulty phase, which will make faulty phase active power calculated with instantaneous power algorithm have a bigger magnitude and more frequency components. According to these characteristics, transient fault identification (TFI) methods based on active power root mean square (RMS) value and twisty beat frequency were put forward. Subsequently, in view of abovementioned TFI methods, ASPAR schemes for a shunt reactors‐compensated WPO line based on faulty phase active power characteristics were established. Simulation experiments, which were conducted using the software PSCAD/EMTDC, verified that the proposed ASPAR schemes can distinguish transient faults from permanent ones rapidly and reliably. The experiments also proved that the proposed adaptive single‐phase reclosing schemes can minimize the influence of changes in fault location and transition resistance and, thus, are suitable for the inconsistent output power of a wind farm and the complex working condition of an outgoing line.

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Estimating life-cycle energy payback ratio of overhead transmission line toward low carbon development

Cited by 6 publications

References 21 publications

An ${\ell}_{0}$ -Norm Minimization for Energy-Efficient Timetabling in Subway Systems

An ${\ell}_{0}$ -Norm Minimization for Energy-Efficient Timetabling in Subway Systems

Evaluation Study of Potential Use of Advanced Conductors in Transmission Line Projects

Faulty phase active power characteristics‐based adaptive single‐phase reclosing schemes for shunt reactors‐compensated wind power outgoing line

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