Relevant bibliographies by topics / Air Circuit Breaker

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Air Circuit Breaker'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 September 2023

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Journal articles on the topic "Air Circuit Breaker"

1

Barukin, A. S., M. Ya Kletsel, A. Zh Dinmukhanbetova, and D. A. Amirbek. "Introduction of an Auxiliary Breaker into the Generator-Transformer Block for Energy Saving in Open Switchgear Circuits of Power Plants." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 66, no. 4 (August 8, 2023): 333–43. http://dx.doi.org/10.21122/1029-7448-2023-66-4-333-343.

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A need in finding of new ways of energy saving at open switchgears of power plants is substantiated. In order to increase energy saving efficiency, an auxiliary breaker is suggested to be inserted between a transformer of a block and its two high-voltage circuit breakers. The reasonability of such an insertion is proved on the basis of comparing of calculations resultsof under-discharge of electricity (UE) by the tabular-logical method (Yu. B. Guk) of the obtained schemes and of the traditional ones. For the calculations, the conditions that arose due to the change in the main circuit of a power plant are studied. Also, equations are given for calculation of a decrease in UE, damage due to it during reconstruction, and costs for the construction of a power plant (the costs are assumed to be the same in all options). Russian statistical data and the predicted failure rate λEV of a 750 kV SF6 circuit breaker are used. An option of the introduction of an SF6 circuit breaker with and without replacement of other circuit breakers with SF6 circuit breakers is considered. The results of calculations of UE, damage, and costs for the introduction suggested are tabulated, where changes in them due to the introduction of the circuit breaker are estimated for 18 ring circuits and 17 “3/2” and “4/3” circuits of 330–750 kV switchgears at condensation, nuclear, and hydroelectric power plants. It is demonstrated that the presence of a generator breaker in the blocks makes it possible to reduce these energy-saving efficiency indicators several times. A technique for determining the failure rate of a hypothetical circuit breaker, which, in the case of traditional replacement, is capable of producing the same effect as an SF6 circuit breaker inserted is proposed. An example of determining this frequency is given. Results of the calculated reduction of UE, damage and costs for the case of an air circuit breaker having been substituted to an SF6 circuit breaker are presented.
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Goh, Hui Hwang, Sy yi Sim, Nur Iskandar Bin Hamzah, Sulaiman bin Mazlan, Chin Wan Ling, Qing Shi Chua, and Kai Chen Goh. "Types of Circuit Breaker and its Application in Substation Protection." Indonesian Journal of Electrical Engineering and Computer Science 8, no. 1 (October 1, 2017): 213. http://dx.doi.org/10.11591/ijeecs.v8.i1.pp213-220.

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Power system consists of the generation, transmission, distribution, and substation. All the power system component requires suitable protection devices as the protection system to protect the system during fault occur. In this paper, the circuit breaker has been selected as one of the protection devices in several applications. The types of circuit breaker that has been reviewed in this paper are oil circuit breaker (OCB), air circuit breaker (ACB), sulphur hexafluoride (SF6) circuit breaker, vacuum circuit breaker, and DC breaker which are hybrid DC breaker and solid-state DC breaker. Normally, the systems or the circuits disrupted or damaged by the fault. To implement the protection system in the system or circuit, the type of faults and cause of faults should be known to overcome the fault. To provide the suitable voltage for the consumer, the substation is needed to control the voltage transmitted at high voltage from the generating station. Protection system is also required in a substation.
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Ivo Uglešić, Igor Ivanković, and Viktor Milardić. "Transients Caused by Sequential Circuit Breaker Tripping Issued by Busbar Protection." Journal of Energy - Energija 59, no. 1-4 (August 22, 2022): 19–24. http://dx.doi.org/10.37798/2010591-4273.

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A study of transients in a high voltage substation 400/110 kV is presented in the paper. An analysis was carried out after a fault on the 110 kV busbar, which caused severe damage in the substation. Investigation was focused on a time frame of several sequential circuit breaker trippings. A first step of the study was collection of data from the primary and secondary system in the substation and the control centre. After numerous analyses of data an attempt was made to construct a precision model, which could be used in the computation. Appropriate models were developed for circuit breakers, voltage (potential) and current metering transformers, power transformers, surge arresters, overhead lines and an equivalent grid. The components of the power system can be modelled for the very particular purpose, which means that a different frequency model should be used and each element in this analysis has a specific frequency response. An attempt was made at very detailed modelling of a power transformer, air blast and SF6 circuit breakers. Computed results of fault currents were compared with measurements captured by the disturbance recorders in the field, mainly in differential numerical relays. Different switching schemes and different tripping sequences of several 110 kV circuit breakers were analysed with a constructed model in the millisecond range. Models of circuit breaker with different types of media, air blast and SF6 gas were used in the cases investigated. Modelling of the circuit breakers’ electrical arc was an important item in all cases in order to take into account the interaction between electrical arc and circuit current during the process of current interruption. The Schwarz/Avdonin equation is applied to model the dynamic behaviour of an electric arc. The fault studied was accompanied by a large short circuit current. For this particular case two types of circuit breaker, air blast and SF 6 were modelled. An important conclusion from those analyses was that sequential tripping of several circuit breakers does not cause superposition of overvoltages, because interruption the current happens when it is passing through the zero. Even the record from the substation and the disturbances recorder proves that each particular circuit breaker was successfully opened. On that basis, focus was put only on the final opening of the breaker and its arc extinction. The conclusion can be drawn that such a substation fault should have no influence on excessive overvoltages that can threaten the insulation of components in the substation.
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Peng, Jin, and Xianbing Wang. "An Intelligent Control-Based Vacuum Circuit Breaker with Permanent Magnet and Dynamic Characteristic Analysis." Mobile Information Systems 2022 (April 25, 2022): 1–10. http://dx.doi.org/10.1155/2022/8086231.

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In the transmission and distribution of energy, circuit breaker plays a very important role. In order to fulfill the current market/user demands, they must be capable of promptly identifying the problem and isolating the problematic areas. According to the extinguishing medium used, circuit breakers are divided into the following categories: air blast, SF6, vacuum, and oil. Among others, permanent magnet (PM) based vacuum circuit breaker is also gaining popularity with each passing day and has become a crucial control and protection equipment in the modern power systems. This study proposes the pulse width modulation (PWM) intelligent control strategy for PM vacuum circuit breaker closing/opening capacitance, group charging, and movement process. For the practical implementation of this idea, dual CPUs are utilized for PM vacuum circuit breaker intelligent control components, by taking STM32F103RBT6 as the core and combining peripheral hardware circuit. PWM pulse output drives IGBT to fulfill the closing/opening capacitance group intelligent charging. On the other hand, PM circuit breaker closing/opening motion displacement signals and coil current feedback achieve closed-loop for PWM intelligent control. The experimental results show that the proposed intelligent control component and PWM intelligent control strategy effectively improve the PM circuit breaker intelligent charging and motion dynamic characteristics.
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Peng, Jin, and Xianbing Wang. "An Intelligent Control-Based Vacuum Circuit Breaker with Permanent Magnet and Dynamic Characteristic Analysis." Mobile Information Systems 2022 (April 25, 2022): 1–10. http://dx.doi.org/10.1155/2022/8086231.

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In the transmission and distribution of energy, circuit breaker plays a very important role. In order to fulfill the current market/user demands, they must be capable of promptly identifying the problem and isolating the problematic areas. According to the extinguishing medium used, circuit breakers are divided into the following categories: air blast, SF6, vacuum, and oil. Among others, permanent magnet (PM) based vacuum circuit breaker is also gaining popularity with each passing day and has become a crucial control and protection equipment in the modern power systems. This study proposes the pulse width modulation (PWM) intelligent control strategy for PM vacuum circuit breaker closing/opening capacitance, group charging, and movement process. For the practical implementation of this idea, dual CPUs are utilized for PM vacuum circuit breaker intelligent control components, by taking STM32F103RBT6 as the core and combining peripheral hardware circuit. PWM pulse output drives IGBT to fulfill the closing/opening capacitance group intelligent charging. On the other hand, PM circuit breaker closing/opening motion displacement signals and coil current feedback achieve closed-loop for PWM intelligent control. The experimental results show that the proposed intelligent control component and PWM intelligent control strategy effectively improve the PM circuit breaker intelligent charging and motion dynamic characteristics.
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Pana, L. "Simulation of protection functions in LV shipboard electrical power systems." Scientific Bulletin of Naval Academy XXV, no. 1 (August 15, 2022): 8–15. http://dx.doi.org/10.21279/1454-864x-22-i1-001.

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The basic function of a shipboard electric power systems is to supply all consumers, both essential and non-essential, with electrical energy, as economically as possible and with an acceptable degree of quality. A shipboard electrical power system comprises three principal subsystems: generation (naval power plant-island mode plant), distribution and protection and automation. During operation all these subsystems may be affected by faults. In this aim all electrical installations on shipboards are to be protected against over-currents due to short- circuits or accidental overloads. The new ABB air circuit-breakers Emax 2 and Tmax T series can be used both as main circuit-breaker in low voltage generation and distribution systems. In addition to protection, the new air ABB circuit-breakers offer possibility of communication which are particularly suitable for automation, control, measurements, grid analysis, and energy savings. ABB Relays are high-performance electronic units for these circuit breakers. Their basic function is to monitor and protect the electric systems against fault current. The units also includes: measuring, data storage, communication, self-test, load control and zone selectivity functions for these circuit-breakers. This paper presents the analysis of protections and simulates how to trigger protections within shipboard power systems.
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Aloni, Ankit. "Smart Circuit Breaker." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (July 31, 2021): 3152–57. http://dx.doi.org/10.22214/ijraset.2021.37097.

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This project is to supply single phase home appliances. This project is used for an alternative for MCB. MCB is fault current protective device which trip on fault current which flows in the circuit. MCB are based on the thermal bimetallic trip mechanism which is very slow and tripping time is based upon percentage of overloads MCB having bimetallic trip which gets derated after some mechanical operation and cause unwanted tripping. All the above faults will be overcome by smart circuit breakers which provide all types of protection such as overload, under voltage, high temperature and short circuit protection, this type of protection is necessary because, now days all, appliance such as LCD, Air conditioner, Refrigerator, etc consist of electronic circuitry which is voltage sensitive and get damage at voltage fluctuation. This project also monitors and display fault on LCD and stores the data for further action. Smart circuit breaker is fast acting and sense relay as fast as possible and trips the relay within 100msec. than MCB which takes 1000msec. to 1600msec. In addition to that LM 35 temperature sensor is also interface to microcontroller by if temperature exceed 550C microcontroller will trip the relay. The intention to use temperature sensor is to detect fire hazard in domestic purpose as well as commercial purpose.
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Tsang, Ton, and Cheung Yip Kan. "Circuit Break Connect Monitoring to 5G Mobile Application." International Journal of Computer Science and Information Technology 13, no. 5 (October 31, 2021): 59–74. http://dx.doi.org/10.5121/ijcsit.2021.13505.

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Along by a continuous improvement to composite electronic devices, a safety to technicians takes additionally become the matter to good concern, as a result to technicians' lives is in jeopardy while their work through shutting down circuit breakers, even that even once the breaker takes been switched off, someone will inadvertently flip to while a technician remains working. That should be a system to guarantee safety that technicians. Also, individuals do not love switching all the time toward turn on / off appliances like fans/lighting/air conditioners. It ends in wasted energy thanks to unnecessarily placing the instrument. To address these issues, we tend to come up through the system through mobile app-controlled circuit breakers that degrade wireless management to home appliances to hunt down a golem app. That replaces a traditional breaker through the mobile app-controlled system in the on / off system, where no one will activate the breaker, while not the word. The remote of home appliances helps a user to save electricity. That enhances a quality of life and luxury. Additionally, a system includes the home security mechanism against drone intrusion using the mobile app-controlled door lock system besides the mechanism that sleuthing dangerous gas leaks. A formation of the system subtracts the degree of victim associate ESP 32 microcontroller, the Bluetooth module, matrix 4x4 keyboards, and the paraffin gas detector associate with a golem mobile application. The entire system is usually compact systems.
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Tonmitr, Norrawit, Kazuki Ganaha, Eiji Kaneko, and Takehiro Hayashida. "Study on Factor of the Quenching Performance on the Polymer Material Characteristics of an Air Circuit Breaker." Key Engineering Materials 718 (November 2016): 15–20. http://dx.doi.org/10.4028/www.scientific.net/kem.718.15.

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Usage of polymer materials in a quenching chamber is one of the most effective methods of improving performance of an air circuit breaker [1, 2]. During a high current interruption in the air circuit breaker, an arc discharge touches the insulator, and ablation gasses are emitted [3]. It is considered that the quenching performance and an arc characteristic are affected by this ablation gasses. In order to clarify the quenching performance of each polymer material, we are conducting the experiments. With these experiments, the relationships of the ablation gasses among the number of arcing cycles, arcing peak voltage, arcing conductances, and the pressure rise will be discussed with four kinds of polymer materials.
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Zhang, Jun Fang, Yao Fang, Zhi Gang Li, and Yan Yan Luo. "Miniature Circuit Breaker Electromagnetic Release Simulation and Analysis." Applied Mechanics and Materials 392 (September 2013): 398–402. http://dx.doi.org/10.4028/www.scientific.net/amm.392.398.

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With the three-dimensional field analysis software Ansoft, we establish three-dimensional finite element model of the electromagnetic release, obtain the electromagnetic release static characteristics of electromagnetic force by simulation, and analyze the relationship between the electromagnetic force, the short-circuit current and the air gap size. By Analyzing the dynamic characteristics of moving iron core, different short-circuit currents influence on the velocity and displacement of the moving iron core was gained.
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Dissertations / Theses on the topic "Air Circuit Breaker"

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McBride, David Iain. "Air blast circuit breaker impulse noise : the role of audiometry in risk assessment of industrial noise." Thesis, University of Birmingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393839.

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Konšel, Ladislav. "Simulace dynamického chování vybavovače jističe." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219754.

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This work includes the theory of circuit breaker construction and is focused mainly on overload function. It mainly deals with electronic circuit breakers, i.e. equipped with an electronic trip unit. The work is focused on the part of trip unit - maglatch of trip unit. For the purposes of simulation, the geometric model is created. Maxwell program is used for the simulation. The work describes the options for conditions input which are necessary for simulation. Using the distribution of magnetic field intensity and magnetic flux density in the section of trip unit maglatch is determined by the simulation. Furthermore, the force effects acting on the armature of the maglatch are calculated. Force values and the directions acting on the armature are determined by changing the simulation parameters - shift of the armature and coil current. Simulations are performed both for steady-state and for dynamic simulation – movement of armature is taken into account. The supply source for the maglatch is created by an external circuit.
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Liu, J. "Modelling and simulation of air and SF6 switching arcs in high voltage circuit breakers." Thesis, University of Liverpool, 2016. http://livrepository.liverpool.ac.uk/3003675/.

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This thesis is concerned with the modelling of switching arcs in air in high voltage circuit breakers and with a comparative study of interruption capability of air and SF6 switching arcs. Emphasis is given to the identification of dominant energy transport processes for arc interruption and the material properties associated these processes. There have been renewed interests in air arcs because of its possible use in a mixture with other gases as a replacement for SF6 in circuit breakers for environment protection. Computer simulation of the switching air arc has been carried out using arc models based on laminar flow and on turbulent flow for the experimental set up of Fang et al [41] under DC current and that of Frind and Rich [66] for the current zero period. DC arc voltages predicted by arc model assuming laminar flow (LAM) are much lower than those measured. Thus, turbulence is introduced to account for additional power loss mechanism not included in the laminar flow model. Two turbulence models have been used to take into account of turbulence enhanced momentum and energy transport: the Prandtl mixing length model (PML) and the standard k-epsilon model or its modified version. For the DC air nozzle arc of Fang et al [41] the value of the turbulence parameter, c= 0.06, in PML has been chosen to match the predicted arc voltage with that measured at 1 kA DC and a stagnation pressure of 10 bar. PML can give satisfactory agreement with experiments over a DC current range from 250 A to 3 kA. When the standard k-epsilon model is used, the predict arc voltage is much higher than that measured indicating that turbulence cooling is too strong. One of the turbulence parameters of the standard k-epsilon model which controls the dissipation rate of turbulent kinetic energy is adjusted to match the predicted arc voltage with the experimentally measured arc voltage under the same discharge conditions as those for finding the value of c in PML. With this chosen value of 1 = 1.62, the modified k-epsilon model (MKE) gives similar results to those of PML. Three arc models (LAM, PML and MKE) are used to compute the critical rate of rise of recovery voltage (RRRV) for the air nozzle arc of Frind and Rich [66]. The presence of the shock inside the nozzle in the presence of the arc prevents the optimisation of the value of turbulence parameter for PML due to numerical convergence problems. RRRV predicted by PML and LAM are much lower than the experimental value. MKE with 1 = 1.65 is successful in predicting satisfactorily the RRRV at di/dt= 13.5 A/μs for several stagnation pressures. However, it has been found that a single value of 1 chosen for one value of di/dt cannot give satisfactory prediction of RRRV for other values of di/dt. A comparative computational study of SF6 and air switching arcs based on MKE has been carried out for the experimental conditions of Frind and Rich [66] for di/dt= 13.5A/μs at several stagnation pressures. Under the same discharge conditions RRRV of SF6 switching arc is one order of magnitude higher than that of air switching arc. Such large difference in the interruption capabilities of SF6 and air is due to the different dominant energy transport processes responsible for the arc cooling during current zero period. Two material properties of the arc plasma, the product of density and specific heat at constant pressure (ρCP) and that of density and enthalpy (ρh) are responsible for the distinctive arc features for SF6 and air. SF6 switching arc has a distinctive arc core surrounded by a thin region with steep temperature gradient. Under the same discharge conditions as those of SF6 air switching arc has no distinctive core structure. Its radial temperature profile is very broad and arc radius is much bigger than that of SF6. Such broad radial temperature profile of air arc is due to the peaks of turbulent thermal conductivity at 4,000 K and 7,000 K produced by the corresponding peaks of the material property of ρCP of air. For SF6 ρCP has a peak just below 4,000 K, which ensures rapid temperature decay above 4,000 K and a gentle temperature tail below 4,000 K. In comparison with SF6 under the same pressure difference across the nozzle the velocity inside air arc is much higher than that of SF6. With ρh of air being greater than that of SF6 for temperature higher than 7,000 K together with higher velocity enthalpy transport capability of air arc is much higher than that of SF6. Energy balance calculation for the current carrying core indicates that after the breakdown of quasi-steady state turbulent thermal conduction is the dominant energy transport process for SF6 while for air arc axial convection is dominant. As a consequence the rates of decay of arc temperature and arc radius for air arc a few microseconds before current zero are much slower than those of SF6, thus resulting in a large difference between RRRVs for the two gases under the same discharge conditions. To find an alternative arc quenching gas with similar interruption capability to that of SF6 one should aim at ρCP and ρh of the alternative gas with similar features to those of SF6.
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透, 山下, and Tohru Yamashita. "遮断器用油圧操作装置の動作時間安定化に関する研究." Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB13045046/?lang=0, 2017. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB13045046/?lang=0.

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電力用遮断器の油圧操作装置において，油圧回路内の気泡が操作装置の動作に及ぼす悪影響を解消するために，新しい油圧回路方式である常時高圧安定回路方式を提案し，油圧回路内の流れおよび可動部の定式化と解析および実測を行った．本方式の動作特性と動作安定性，ピストンの制動特性，複数の油圧操作装置の駆動特性について検討し，本方式が有効かつ安定的に機能することを確認した．以上により，油圧操作装置の動作時間安定化技術を開発することができた．
We proposed and studied a hydraulic operation stabilizing system for a hydraulic operating device of a circuit breaker to eliminate the influence of air bubbles created in hydraulic fluid. We formulated the flow of hydraulic circuit and the motion of moving parts, which were numerically simulated and experimentally confirmed. We confirmed that this stabilizing system functioned effectively and stably through the investigation: operation characteristics and stability of the stabilizing system, braking characteristics of a piston-dashpot system and operation characteristics of two hydraulic operating devices. Based on the results, we could perform an engineering development for stabilizing operation time of the hydraulic operating device.
博士(工学)
Doctor of Philosophy in Engineering
同志社大学
Doshisha University
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Hlaváč, Jan. "Návrh prezentačního rozváděče nn." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377343.

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This master’s thesis deals with the design of electric switchgear for low voltage, which will serve for presentation purposes. The switchgear is analogy of the modular system MNS 3.0, which includes the latest equipment of ABB Ltd. that is currently available on the market. Switchgears of this type are widely used in industry primarily for controlling motor units. For this reason, in the switchgear there are located motor starters in various performances, as well as distribution modules. In addition, the switchgear has an automatic transfer switch function in case of failure of one of the power supplies. The complete documentation of the switchgear is processed in the professional software EPLAN Electric P8 with use of the 3D software EPLAN Pro Panel for modelling device compartments. The final part of the thesis is the calculation of the maximum cable lengths that a potential customer can connect to the switchgear. In addition, an analysis of the power and control circuits was carried out for voltage drop calculations, as well as the effect of these voltage drops and capacitance of long control cables on the actuation of contactors.
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Deshpande, Sachin V. "Analysis Of Sulphur Hexafluoride Gas Blast Arc By A Mathematical Model." Thesis, 1997. https://etd.iisc.ac.in/handle/2005/1818.

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Deshpande, Sachin V. "Analysis Of Sulphur Hexafluoride Gas Blast Arc By A Mathematical Model." Thesis, 1997. http://etd.iisc.ernet.in/handle/2005/1818.

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Books on the topic "Air Circuit Breaker"

1

McBride, David Iain. Air blast circuit breaker impulse noise: The role of audiometry in risk assessment of industrial noise. Birmingham: University of Birmingham, 1999.

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2

IEEE Power Engineering Society. Switchgear Committee. and American National Standards Institute, eds. IEEE loading guide for AC high-voltage air switches under emergency conditions: Supplement to IEEE loading guide for AC high-voltage air switches (in excess of 1000 volts). New York: The Insitute of Electrical and Electronics Engineers, Inc., 1993.

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3

IEEE Power Engineering Society. Switchgear Committee., ed. IEEE loading guide for AC high-voltage air switches (in excess of 1000 V). New York, NY: Institute of Electrical and Electronics Engineers, 1996.

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4

Nissi, Riikka, Mika Simonen, and Esa Lehtinen, eds. Kohtaamisia kentällä: Soveltava keskusteluntutkimus ammatillisissa ympäristöissä. SKS Finnish Literature Society, 2021. http://dx.doi.org/10.21435/skst.1471.

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Encounters in the field Applied conversation analysis in professional contexts Societal impact is an integral part of academic research today and researchers are expected to share their findings with research participants. Efforts to develop scientific research and science communication from one-way communication towards different forms of co-creation where the researcher and research participants produce knowledge and negotiate about its meaning and applicability through joint actions are in great demand. For the researcher, such developments have brought a new kind of access into the world of research participants and also novel reflections on one’s professional knowledge and identity and their boundaries. This book focuses on the human and social sciences and draws particular attention to the diverse encounters that occur between researchers and research participants at all stages of the research process when studying human subjects and activities. The book presents case studies of applied conversation analysis in a variety of professional contexts. The aim of the book is to shed light on the practices, possibilities, and challenges of applied research within the conversation analytic framework where the research participants’ authentic social situations become the target of the researcher’s detailed analysis. The articles of the book investigate social interaction in occupational health care, mental health rehabilitation, elderly care, welfare education, theatre rehearsals, social circus, military organization, software development, and workplace community break taking. These articles represent applied conversation analysis in different ways. The results of the research have been used in some of the articles, for example, in developing the professional practices of the workplace community whereas in some other articles the whole study has been undertaken collaboratively between researchers and professionals. Each article is divided into two parts: a conventional research report that analyses the patterns of social interaction in a particular professional setting is followed by a story where the authors reflect on how their study originated, how it progressed, and what kinds of encounters and choices it involved. The stories highlighting reciprocal interactions of the researcher and the research participants across the research process bring forth various voices and perspectives that conventionally are not considered as part of the research report. The book brings important information not only on the interactional phenomena examined in the articles but also on the diverse issues of conducting and applying research in professional contexts. It also discusses the practices and definitions of applied conversation analysis within the broader framework of applied research, universities’ third mission, and forms of knowledge and expertise in contemporary society.
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Book chapters on the topic "Air Circuit Breaker"

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Weik, Martin H. "low-voltage enclosed air circuit-breaker switchgear." In Computer Science and Communications Dictionary, 943. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_10758.

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2

Kern, Steffen, and Giuseppe Loiacono. "High Frequency Trading and Circuit Breakers in the EU." In Global Algorithmic Capital Markets, 308–31. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198829461.003.0012.

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This chapter reviews the fundamental workings of the EU regulatory framework and its implications for high frequency trading (HFT) and the latest findings on the market realities in the EU. Over the last decade, securities trading landscapes have undergone significant change, with the emergence of HFT being one of the most important developments in this context. At the same time, the EU has made landmark legislative advances with the aim of increasing investor protection, market order, and financial stability, and of containing risks in those areas. As the new MiFID2 legal framework takes effect, a wealth of new data and evidence will become available in coming years that will improve understanding of HFT patterns, the effectiveness of circuit breakers, and their optimal calibration.
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Kamboj, Vikram Kumar, Kamalpreet Sandhu, and Shamik Chatterjee. "Modelling Analysis and Simulation for Reliability Prediction for Thermal Power System." In AI Techniques for Reliability Prediction for Electronic Components, 136–63. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1464-1.ch008.

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The size of the power system is growing exponentially due to heavy demand of power in all the sectors (e.g., agricultural, industrial, and commercial). Due to this, the chance of failure of individual units leading to practical or complete collapse of power supply is common to be encountered. The reliability of power system is therefore the most important feature to be maintained above some acceptable threshold value. Furthermore, the maintenance of individual units can also be planned and implemented once the level of reliability for given instant of time is known. The proposed research therefore aims at determining the threshold reliability of generation system. The generation system consists of boiler, water, blade angle in turbine, shaft coupling, excitation system, generator winding, circuit breaker, and relay. This chapter presents the mathematical model of reliability of individual components and equivalent reliability of the entire generation system. It suggests the approach to determine the critical reliability of both individual and equivalent reliability of the generation system.
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Conference papers on the topic "Air Circuit Breaker"

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Collaboration. "New developments in low voltage air circuit breaker technology." In 7th International Conference on Developments in Power Systems Protection (DPSP 2001). IEE, 2001. http://dx.doi.org/10.1049/cp:20010213.

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Sen, Pranay M., and S. S. Kanojia. "Analysis of Thermal Performance of an Air Circuit Breaker." In 2021 IEEE 4th International Conference on Computing, Power and Communication Technologies (GUCON). IEEE, 2021. http://dx.doi.org/10.1109/gucon50781.2021.9573594.

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Kim, Keewon, Hyun Woo Joo, Chae Yoon Bae, Jongung Choi, and Young Geun Kim. "3D Simulation of Air Arc in the Molded Case Circuit Breaker." In 2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST). IEEE, 2019. http://dx.doi.org/10.1109/icepe-st.2019.8928799.

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Xiang, Honggang, Degui Chen, Xingwen Li, Liang Ji, and Weixiong Tong. "Calculation of the Short-time Withstand Current for Air Circuit Breaker." In Electrical Contacts - 2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts. IEEE, 2007. http://dx.doi.org/10.1109/holm.2007.4318225.

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Qu, Jianyu, Xingwen Li, and Qian Wang. "Experimental study on electric resistance of tilted contact in air circuit breaker." In 2016 IEEE 62nd IEEE Holm Conference on Electrical Contacts (Holm). IEEE, 2016. http://dx.doi.org/10.1109/holm.2016.7780017.

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Hiwarkar, Akshay, and Rutuja Hiware. "Analysis of a High Voltage Air Circuit Breaker and The Current-zero Phenomenon." In 2022 International Conference on Futuristic Technologies (INCOFT). IEEE, 2022. http://dx.doi.org/10.1109/incoft55651.2022.10094329.

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Kashiwagi, Shinichiro, Zhenwei Ren, Yusuke Nemoto, Yuki Suzuki, Yoshifumi Maeda, and Toru Iwao. "Analysis of ARC Temperature Distribution Affected by Opening Speed in Air Circuit Breaker." In 2021 IEEE International Conference on Plasma Science (ICOPS). IEEE, 2021. http://dx.doi.org/10.1109/icops36761.2021.9588493.

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Kena Chen, Degui Che, Xingwen Li, and Shenli Jia. "A method to analyze the short-time withstand current capability for air circuit breaker." In 2011 1st International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST). IEEE, 2011. http://dx.doi.org/10.1109/icepe-st.2011.6122964.

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Chung, Han-Baek, Kyu-Ho Lee, Woo-Jin Park, Kil-Young Ahn, and Young-Geun Kim. "Arc Extinction Structure of Air Circuit Breaker for Improvement of Direct Current Breaking Performance." In 2022 6th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST). IEEE, 2022. http://dx.doi.org/10.1109/icepe-st51904.2022.9757078.

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Agostini, Francesco, Umamaheswara Vemulapati, Daniele Torresin, Martin Arnold, Munaf Rahimo, Antonello Antoniazzi, Luca Raciti, Davide Pessina, and Harish Suryanarayana. "1MW bi-directional DC solid state circuit breaker based on air cooled reverse blocking-IGCT." In 2015 IEEE Electric Ship Technologies Symposium (ESTS). IEEE, 2015. http://dx.doi.org/10.1109/ests.2015.7157906.

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Reports on the topic "Air Circuit Breaker"

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Tow Leong, Tiang, Mohd Saufi Ahmad, Ang Qian Yee, Syahrun Nizam Md Arshad@Hashim, Mohd Faizal Mohd Zahir, Mohd Azlizan Moh Adib, Nazril Husny, Tan Kheng Kwang, and Dahaman Ishak. HANDBOOK OF ELECTRICAL SYSTEM DESIGN FOR NON-DOMESTIC BUILDING. Penerbit Universiti Malaysia Perlis, 2023. http://dx.doi.org/10.58915/techrpt2023.001.

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Abstract:
This technical report presents the electrical system installation design for development of a factory with 1 storey and 2 storey of offices. Firstly, the general methodology of designing the electrical system are elaborated in this report. As overall, the methodologies in designing the components of the electrical system are explained and elaborated, which included: (a) load and maximum demand estimation; (b) miniature circuit breaker (MCB) selection; (c) moulded case circuit breaker (MCCB) selection; (d) air circuit breaker (ACB) selection, (e) residual current device (RCD) selection; (f) protection relay selection; (g) current transformer (CT) selection; (h) sizing selection for cable and live conductors; (i) capacitor bank selection for power factor correction (PFC); and (j) distribution transformer and its protection devices selection. Then, the electrical system of this project is computed and designed by using the methodologies aforementioned. Firstly, the electrical system of various distribution boards (DBs) with the protection/metering devices along with its phase and earthing cables for every final circuits are designed and installed in the factory. Next, the installation is proceeded with the electrical system of main switchboard (MSB) with the protection/metering devices along with its phase and earthing cables for every DBs. Also, the electrical system of PFC by using detuned capacitor bank with various protection/metering devices is designed and built in the plant. Apart from that, the factory is equipped with the electrical system of high tension (HT) room that included the distribution power transformer with the protection/metering devices along with its phase and earthing cables. Lastly, the methodologies and the computation design of the electrical system installation in the context of connected load, load currents, maximum demand, MCB, MCCB, ACB, RCD, protection relay, metering CTs, live cable, protection conductor/earth cable, detuned capacitor bank, and distribution transformer, are prepared according to several important standards, for instance, the MS IEC 60364, Electrical Installations for Buildings, Suruhanjaya Tenaga (ST) – Non-Domestic Electrical Installation Safety Code, Electricity Supply Application Handbook, Tenaga Nasional Berhad (TNB).
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