Reliability, availability and maintainability study for failure analysis in series capacitor bank

Velásquez, Ricardo Manuel Arias; Lara, Jennifer Vanessa Mejía

doi:10.1016/j.engfailanal.2018.01.008

Cited by 44 publications

(8 citation statements)

References 8 publications

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“…The analysis presented p r e -p r i n t here is mainly representative of hardware failures. In [14], a comprehensive reliability analysis of the complete series capacitor bank is presented, data from their analysis is used here. The capacitor bank is presented here with the cumulative unavailability and failure rate of the consisting devices as calculated in [14].…”

Section: Reliability Analysis Methodsmentioning

confidence: 99%

“…In [14], a comprehensive reliability analysis of the complete series capacitor bank is presented, data from their analysis is used here. The capacitor bank is presented here with the cumulative unavailability and failure rate of the consisting devices as calculated in [14]. The reliability data for different equipment in the protection scheme are taken from different previous research papers [14], [10], [15] III.…”

Section: Reliability Analysis Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Reliability Assessment of Protection Schemes for Series Compensated Transmission Lines

Hoq

Habib

Shayesteh

et al. 2019

2019 4th International Conference on System Reliability and Safety (ICSRS)

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Series capacitors are used in transmission lines for enhancing power transmission limit. However, they complicate the line's protection due to impedance change of the line, voltage inversion, current inversion and sub-synchronous oscillation. Distance and differential protections are used in different arrangements in transmission line protection. Often they are used together as main and backup protection. In this paper, the fault tree method is used to compare the reliability of three common transmission line protection schemes. The schemes considered here are distance (main)-distance (backup)(Z, Z), differential (main)-distance (backup) (∆, Z) and differential (main)-differential (backup) (∆, ∆). Fault trees are used to calculate the reliability of protection schemes in terms of both unavailability and failure rate. The analyses show that, for series compensated lines, using distance protection reduces protection system reliability. Differential protection performs best in terms of reliability despite depending entirely on communication.

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Section: Reliability Analysis Methodsmentioning

confidence: 99%

Section: Reliability Analysis Methodsmentioning

confidence: 99%

Reliability Assessment of Protection Schemes for Series Compensated Transmission Lines

Hoq

Habib

Shayesteh

et al. 2019

2019 4th International Conference on System Reliability and Safety (ICSRS)

View full text Add to dashboard Cite

show abstract

“…In the case of reactive power compensation with capacitor banks and distribution static compensators, the first devices are cheaper compared to the latter [14]. Additionally, their maintenance is minimum, and their useful life is greater than 25 years [15], and they have high reliability [16], which makes capacitors the most reliable and efficient strategy to reduce power losses with minimum investment costs [13].…”

Section: Introduction 1general Contextmentioning

confidence: 99%

On the Conic Convex Approximation to Locate and Size Fixed-Step Capacitor Banks in Distribution Networks

2022

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The problem of the optimal siting and sizing of fixed-step capacitor banks is studied in this research from the standpoint of convex optimization. This problem is formulated through a mixed-integer nonlinear programming (MINLP) model, in which its binary/integer variables are related to the nodes where the capacitors will be installed. Simultaneously, the continuous variables are mainly associated with the power flow solution. The main contribution of this research is the reformulation of the exact MINLP model through a mixed-integer second-order cone programming model (MI-SOCP). This mixed-integer conic model maintains the nonlinearities of the original MINLP model; however, it can be solved efficiently with the branch & bound method combined with the interior point method adapted for conic programming models. The main advantage of the proposed MI-SOCP model is the possibility of finding the global optimum based on the convex nature of the power flow problem for each binary/integer variable combination in the branch & bound search tree. The numerical results in the IEEE 33- and IEEE 69-bus systems demonstrate the effectiveness and robustness of the proposed MI-SOCP model compared to different metaheuristic approaches. The MI-SOCP model finds the final power losses of the IEEE 33- and IEEE 69-bus systems of 138.416kW and 145.397kW, which improves the best literature results reached with the flower pollination algorithm, i.e., 139.075 kW, and 145.860kW, respectively. The simulations are carried out in MATLAB software using its convex optimizer tool known as CVX with the Gurobi solver.

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“…In the low voltage DC (LVDC) condition, even if the contamination problem increases, it can be managed by increasing the creepage distance of the polymer insulators, but in the HVDC condition, the surface erosion problem cannot be solved by only increasing the creepage distance. [12][13][14] Therefore, in order to use it as an HVDC insulation material, its durability should be fundamentally improved. In order to improve the tracking resistance of a polymeric insulation material, hydrophobicity of the polymer surface should be modified and aluminum trihydroxide (ATH) particles are incorporated into the insulating material.…”

Section: Introductionmentioning

confidence: 99%

Effect of surface‐modified nano‐aluminum trihydroxide on electrical properties of silicone/nano‐silica nanocomposite

Park

Lee

2021

J of Applied Polymer Sci

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The surface of fumed nano-silica (nano-SiO 2 ) was treated with an alkyl silazane to change from hydrophilic surface to hydrophobic, and the surface of aluminum trihydroxide (nano-ATH) was treated with a vinyl silazane to improve electrical properties (high voltage direct current [HVDC] breakdown strength and tracking resistance) in silicone nanocomposites. They were prepared by mixing liquid silicone resin with the modified nano-SiO 2 and the modified nano-ATH, and the effects of the modified nano-ATH particles on the electrical properties were studied in order to apply them to heavy electric equipment. The surface modifications were confirmed by thermogravimetric analysis and contact angle analysis. As the nano-ATH content increased, (±) HVDC breakdown strength increased and tracking resistance was greatly improved. As the nano-ATH content increased, the initial generation of leakage current was delayed, and the occurrence frequency and the intensity of the leakage current decreased. The erosion weight due to the tracking also decreased.

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Reliability, availability and maintainability study for failure analysis in series capacitor bank

Cited by 44 publications

References 8 publications

Reliability Assessment of Protection Schemes for Series Compensated Transmission Lines

Reliability Assessment of Protection Schemes for Series Compensated Transmission Lines

On the Conic Convex Approximation to Locate and Size Fixed-Step Capacitor Banks in Distribution Networks

Effect of surface‐modified nano‐aluminum trihydroxide on electrical properties of silicone/nano‐silica nanocomposite

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