A Study on the Installation of Automatic Switches Considering the Characteristics of Distribution Feeder and Importance of Customer

Choi, Mi-Gon; Yun, Sang; Lim, Young‐Cheol; Ahn, Seon-Ju

doi:10.5370/kiee.2019.68.10.1176

Cited by 2 publications

(3 citation statements)

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“…Due to the value of c for red soil decreasing significantly under natural water content and the relationship between ϕ and water content being more stable than c [28,29], the effect of c is ignored in this paper and the earth pressure considering rainfall is obtained based on Equation (2). The distribution of earth pressure is nonlinear, as shown in Figure 2.…”

Section: Evaluation Framework Of the Pole-line System Under Rainfallmentioning

confidence: 99%

“…Due to the rapid development of the economy, the demand for electric energy has increased significantly. The foundation of the TP is shallow and sensitive to rainfall, and the distribution system reliability indices show that around 80% of power outages are caused by the failure of the TPs [2]. The east of China is adjacent to the Pacific Ocean, and on average, 7.4 typhoons land in China every year, posing a frequent threat to the coastal power transmission system.…”

Section: Introductionmentioning

confidence: 99%

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Bearing Capacity of Transmission Poles under Combined Wind and Rain Excitations Based on the Deep Learning Method

Liu

Wang

et al. 2023

Buildings

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Generally, only wind effect is considered in the collapse evaluation of transmission poles (TPs). However, during a typhoon landing, the rainfall is usually very heavy and the influence of the wind and rainfall should be considered simultaneously. To estimate the bearing capacity of TPs accurately during a typhoon, this paper proposes a method for predicting the water content distribution of soil based on the deep learning method. Then, the earth pressure distribution related to the rainfall is obtained. Furthermore, according to the static balance principle, the ultimate overturning moment of the TPs is obtained, and the corresponding critical wind speed is determined via a numerical simulation. Finally, a case study is tested and the collapse evaluation of TPs under the combined effects of wind and rainfall is obtained. The results show that the critical wind speed when considering rainfall is less than the value when ignoring the rainfall effect. The traditional method overestimates the structural safety of the TPs because the rainfall has a significant reduction on the bearing capacity of TPs.

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Section: Evaluation Framework Of the Pole-line System Under Rainfallmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bearing Capacity of Transmission Poles under Combined Wind and Rain Excitations Based on the Deep Learning Method

Liu

Wang

et al. 2023

Buildings

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“…Galias et al [13] deals with the optimum placement of the circuit-breaker in the radial network in order to increase the reliability of the electricity transmission. In paper [14], five representative models of a Korean distribution feeder are derived using actual feeder property data and outage data. In order to achieve the reliability goal effectively, this paper also proposes a method to determine the priority of automatic switch installation according to the characteristics of the feeder and the customer.…”

Section: Introductionmentioning

confidence: 99%

Management of Smart Switchboard Placement to Enhance Distribution System Reliability

et al. 2020

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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...

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A Study on the Installation of Automatic Switches Considering the Characteristics of Distribution Feeder and Importance of Customer

Cited by 2 publications

References 0 publications

Bearing Capacity of Transmission Poles under Combined Wind and Rain Excitations Based on the Deep Learning Method

Bearing Capacity of Transmission Poles under Combined Wind and Rain Excitations Based on the Deep Learning Method

Management of Smart Switchboard Placement to Enhance Distribution System Reliability

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