Underground cables vs. overhead lines: Quasi-experimental evidence for the effects on public risk expectations, attitudes, and protest behavior

Mueller, Christoph Emanuel; Keil, Silke I.; Bauer, Christian

doi:10.1016/j.enpol.2018.10.053

Cited by 18 publications

(7 citation statements)

References 34 publications

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“…In the above formula, PS is the self-inductance of the ground plane loop of the shielding layer and ZS is the impedance of the shielding layer [22]. Due to the secondary effect, the induced current in the shielding layer will couple the induced voltage v2s in the disturbed cable reference ground plane loop and the coupling voltage v2s is as follows:…”

Section: Suppression Principle Of Electromagnetic Coupling By Shielding Layermentioning

confidence: 99%

Electromagnetic Field Analysis and Shielding Method of Underground Variable Frequency Power Cable

Zhang

Yang

2022

Advances in Civil Engineering

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The transmission and radiation of underground variable frequency electromagnetic waves will seriously interfere with the operation of the power cable and its surrounding environment. At present, the test methods for power cables basically require the impedance of the test system to match the characteristic impedance of the cable. The defect is that the process of designing and making the impedance matching impedance network is relatively complex and requires high manufacturing accuracy. In order to solve these problems, this paper puts forward the electromagnetic field fast detection formula and electromagnetic field shielding method of underground variable frequency power cable. The research method of this paper is the principle of shielding electromagnetic field materials and the suppression principle of shielding layer for electromagnetic coupling. The function of the two principles is to study the reflection, absorption, and multiple reflection of electromagnetic waves and to study the cut-off frequency of the nonmagnetic shielding layer. These two principles guide the experiment. In this paper, the measurement formula of the shielding performance of mismatched cables is derived through experiments. The results show that the error of the measurement formula is no more than 8 dB. Then, through the experiment of restraining the interference of magnetic materials on the electromagnetic field, it is concluded that the magnetic field shielding performance can reach 20 dB. Then, through the performance test of electromagnetic field shielding materials, the shielding efficiency of metal fiber antiradiation materials is the largest, and the average efficiency reaches 76.4 dB.

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Section: Suppression Principle Of Electromagnetic Coupling By Shielding Layermentioning

confidence: 99%

Electromagnetic Field Analysis and Shielding Method of Underground Variable Frequency Power Cable

Zhang

Yang

2022

Advances in Civil Engineering

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“…However, in many parts of the world there are still many streets with a tangle of overhead lines [3]. At the same time, social acceptance for the development of the network in many locations is not unambiguous [9,10]. Underground cable lines [11], although more expensive to build and operate, are much more resistant to natural disasters, and thus their operation is associated with a lower risk of failure.…”

Section: Introductionmentioning

confidence: 99%

Experiment-Based Study of Heat Dissipation from the Power Cable in a Casing Pipe

Masnicki

Mindykowski²,

Pałczyńska³

2022

Energies

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The paper deals with the important challenges in terms of electricity transmission by means of underground cable lines. The power cable’s performance is characterized by an ampacity that represents its maximum electric current-carrying capacity. The ampacity of power cables depends on their ability to diffuse the heat generated by the current flow into the environment. In the performed research, the analysis of the efficiency of heat dissipation from the cable is based on the measurement of temperatures at selected points in individual sections of the cable. As a consequence, the proposed test stand and applied research methodology are vital for the experimental evaluation of the analyzed thermal phenomena in the investigated underground cable lines. The research program covers an in-depth analysis based on the results related to the vital parameters of the investigated cable. The experimental methodology was used to analyze the influence of the properties of the medium surrounding the cable on its temperature, and thus on the ampacity of the cable. A novelty of this paper concerns the carrying out of the experimental laboratory research with actual measurements of the temperature distribution in specific points of the casing pipe based on the original test stand. The paper presents the novel concept of the developed stand for testing heat dissipation from the cable in a casing pipe with pipe sections filled with various media, equipped with a power supply system ensuring easy control of the power dissipated in the cable. The preliminary results of the comparative tests, in which the temperature distribution in the sections of the casing pipes was recorded, indicate that the findings are satisfactorily consistent with the assumptions related to the purpose of the research. The use of appropriate materials surrounding the cable contributes to more effective heat dissipation, and as it has been shown for the examined case in originally planned and conducted tests, it can lower the cable temperature by more than 20 °C, contributing to a significant increase in the ampacity of the cable. For example, it was recorded that for different media filling the pipes, the cable reached 30 °C with different currents flowing through cable of 60 A and 120 A, respectively.

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“…Underground cables are more durable as they are least effected by any environmental and external mechanical stresses. These cables are most suitable for the supply of electricity to high rise buildings, hotels, universities, factories, and Government Departments [2]. In developed countries such cables are also used for long distribution and transmission but they are not recommended to operate above 66 kV because of economic constraints and insulation difficulties [3].…”

Section: Introductionmentioning

confidence: 99%

Parametric change in Insulation Resistance and Breakdown Voltage of Underground PVC Cables under Accelerated Multistress Aging Conditions

Butt

Amin

Sohail

et al. 2021

PakJET

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PVC is widely used as an electrical insulation for low-voltage indoor wiring and underground cabling. These cables are attacked by contaminants and chemicals present in the soil. The elevated temperatures and pressures inside the soil also adds up to stresses and deteriorates their insulations and sheaths and this eventually goes on damaging the conductors. So their performance in the contaminated service environment should be investigated considering extreme conditions in order to predict and ensure reliable service life. In this research 4 different PVC cable samples (2 core 10 mm2, 4 core 10 mm2, 4 core 120 mm2 and 4 core 240 mm2) were subjected to mechanical (via small punches), thermal, chemical and electrical stress over each core of the cable. Electrical stress was applied with 1 kV AC transformer. These samples were aged for 1000 hours under International Electrotechnical Commission (IEC) 1000 hours multistress aging conditions. Visual inspection and electrical characterization was done by Breakdown Voltage and Insulation Resistance Test for insulation and sheath at different intervals to investigate early stage degradation and reduction in lifetime. The results were compared with the characterizations already reported in the literature. Physical appearance and chemical degradations were apparent from the visual inspection of end aged samples. Quantitatively the results also indicated the continual decline in the breakdown voltage and insulation resistance over the aging time. Our findings inferred that the depreciation in quality of PVC cables (insulations and sheaths) is likely due to the chemical stresses which also instigates all other stresses

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Underground cables vs. overhead lines: Quasi-experimental evidence for the effects on public risk expectations, attitudes, and protest behavior

Cited by 18 publications

References 34 publications

Electromagnetic Field Analysis and Shielding Method of Underground Variable Frequency Power Cable

Electromagnetic Field Analysis and Shielding Method of Underground Variable Frequency Power Cable

Experiment-Based Study of Heat Dissipation from the Power Cable in a Casing Pipe

Parametric change in Insulation Resistance and Breakdown Voltage of Underground PVC Cables under Accelerated Multistress Aging Conditions

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