Log in

Relevant bibliographies by topics / Electric circuit-breakers Testing / Journal articles

To see the other types of publications on this topic, follow the link: Electric circuit-breakers Testing.

Journal articles on the topic 'Electric circuit-breakers Testing'

Author: Grafiati

Published: 10 December 2022

Last updated: 19 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 28 journal articles for your research on the topic 'Electric circuit-breakers Testing.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

D’Antona, Gabriele, Luca Ghezzi, Sara Prando, and Francesco Rigamonti. "Magnetic Sensor Array for Electric Arc Reconstruction in Circuit Breakers." Sensors 24, no. 17 (2024): 5779. http://dx.doi.org/10.3390/s24175779.

Full text

Abstract:

Noninvasive imaging of circuit breakers under short-circuit testing is addressed by recording the magnetic field produced over an array of external sensors and by solving an inverse problem to identify the causing current distribution. The temporal and spatial resolution of the sensing chain are studied and implemented in a physical set-up. A wire model is adopted to describe electrical current distribution. Additionally, the simpler, more direct approach to evaluating the passage of electric current in front of sensors is proposed. The dynamics of suitable approximating models of the electric arc that forms across contacts is obtained and agrees with multi-physical simulations and with experimental time histories of current and voltage. The two methods are flexible and allow the analysis of different types of circuit breakers.

APA, Harvard, Vancouver, ISO, and other styles

2

Et. al., Jagadeesh Peddapudi,. "Generate Various Parameters Of Trv Envelope Synthetic Test Circuit." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 2 (2021): 1348–56. http://dx.doi.org/10.17762/turcomat.v12i2.1345.

Full text

Abstract:

The most basic transient a circuit breaker needs to suffer during its activity is the transient recovery voltage (TRV), started by the electric force system as a characteristic response on flow interference. To test high voltage CBs, direct testing utilizing the force system or short out alternators are not practical. The testing of high voltage Circuit Breakers (CBs) of bigger limit requires huge limit of testing station. An equal infusion of short out current and transient voltage to medium and high voltage circuit breaker (CB) by a synthetic model is examined. Transient recovery voltage is made by a capacitor bank and is applied to CB. An optical set off spark gap has been utilized to interrupt short circuit and to introduce of transient recovery voltage that is applied across the contacts of circuit breaker. Transient recovery voltage examination can never be done totally, as the advancement of circuit breaker development and organization configuration goes on. The most widely recognized way to deal with TRV examination is concerning the supposed planned TRV, in which a suspicion of dismissing association between circuit breaker itself and the innate system recovery voltage is being made. Notwithstanding, it actually is by all accounts qualified to examine what circuit breaker means for transient recovery voltage. An ideal grouping to open/close of reinforcement test article and helper circuit breakers inside suitable chance to infuse of recovery voltage. The impact of reactance of inductive flaw current limiter just as distance to blame in short line issue condition on pace of ascent of recovery voltage. A 4-boundaries TRV synthetic test circuit dependent on equal current infusion technique is planned and mimicked for testing 145kV rating circuit-breakers according to new TRV prerequisites given in IEC 62271-100.

APA, Harvard, Vancouver, ISO, and other styles

3

Reza Sarwo Widagdo, Puji Slamet, and Fernanda Eka Saputra. "Performance Analysis of SF6 Circuit Breakers: Case Study of Rungkut 150 kV Main Substation." WAHANA 76, no. 1 (2024): 17–27. http://dx.doi.org/10.36456/wahana.v76i1.8487.

Full text

Abstract:

Electrical energy transmission plays an important role as a means of distributing electrical energy from generation to distribution and consumers. During the process of distributing electrical energy, disturbances such as short circuits often occur. Therefore, there needs to be safeguards so that the distribution process runs well. One of the safety equipment in the main substation is the circuit breaker. Circuit breaker is a mechanical switch or switching equipment that can close, transmit or disconnect the load current under normal conditions or under abnormal conditions such as a short circuit. Problems with circuit breaker can be detrimental and disrupt the operation of the electric power system. If the circuit breaker does not work properly when a disturbance occurs, the disturbance can damage other devices and cause instability in the distribution of electrical power. Therefore, regular testing and maintenance must be carried out to ensure the circuit breaker is suitable for operation. The testing stages include SF6 pressure, insulation resistance, contact resistance, and circuit breaker contact simultaneity. The test results show SF6 pressure with a value above the circuit breaker nameplate, insulation resistance with a value above 150 MΩ, contact resistance with a standard value below 50 µΩ, and contact simultaneity testing is carried out by calculating the delta time when close and open on each phase in below the value of 10 ms. In accordance with the results of SF6 gas pressure testing, insulation resistance, contact resistance and circuit breaker synchronization at the 150 KV Rungkut Bay Line Main Substation, Surabaya Selatan, it is in operational condition.

APA, Harvard, Vancouver, ISO, and other styles

4

Awwad, Abdullah Eial, Mahmoud Al-Soud, Alaa Al-Quteimat, and Oleksandr Ushkarenko. "Simulation-Based Analysis of Dynamics of Autonomous Electric Power Systems." Mathematical Modelling of Engineering Problems 9, no. 4 (2022): 887–96. http://dx.doi.org/10.18280/mmep.090405.

Full text

Abstract:

This paper is devoted to the development of a model of an autonomous electric power system to study random processes of voltage, current and power changes in emergency and dynamic operation modes. A diagram for calculating short-circuit currents has been presented, which was focused on a typical wide range of autonomous power plants with three diesel generator units. A model of an autonomous power plant has been developed, allowing to solve the assignments of determining short-circuit currents and starting currents of electric power machines. The equivalent network of the studied power system for transient calculations has been presented. Thus, the voltage waveforms have been obtained. A comparative assessment of theoretical calculation methods and simulation analysis demonstrated a high degree of accuracy of the simulation results. The use of approach suggested in the article and the developed model allows to increase the accuracy of conclusions when testing the abruptly variable processes and to make the most reasonable choice of measures to improve the quality of electricity and the reliability of electrical equipment. In particular, simulation analysis and obtaining transient curves for starting powerful consumers allow more accurately choose the type of circuit breakers used and the related configuration parameters.

APA, Harvard, Vancouver, ISO, and other styles

5

Mcineka, Christopher Thembinkosi, Nelendran Pillay, Kevin Moorgas, and Shaveen Maharaj. "Automatic Switching of Electric Locomotive Power in Railway Neutral Sections Using Image Processing." Journal of Imaging 10, no. 6 (2024): 142. http://dx.doi.org/10.3390/jimaging10060142.

Full text

Abstract:

This article presents a computer vision-based approach to switching electric locomotive power supplies as the vehicle approaches a railway neutral section. Neutral sections are defined as a phase break in which the objective is to separate two single-phase traction supplies on an overhead railway supply line. This separation prevents flashovers due to high voltages caused by the locomotives shorting both electrical phases. The typical system of switching traction supplies automatically employs the use of electro-mechanical relays and induction magnets. In this paper, an image classification approach is proposed to replace the conventional electro-mechanical system with two unique visual markers that represent the ‘Open’ and ‘Close’ signals to initiate the transition. When the computer vision model detects either marker, the vacuum circuit breakers inside the electrical locomotive will be triggered to their respective positions depending on the identified image. A Histogram of Oriented Gradient technique was implemented for feature extraction during the training phase and a Linear Support Vector Machine algorithm was trained for the target image classification. For the task of image segmentation, the Circular Hough Transform shape detection algorithm was employed to locate the markers in the captured images and provided cartesian plane coordinates for segmenting the Object of Interest. A signal marker classification accuracy of 94% with 75 objects per second was achieved using a Linear Support Vector Machine during the experimental testing phase.

APA, Harvard, Vancouver, ISO, and other styles

6

Avadhoot Kittur, Dikhsita Choudhary, and Dr. Robert Michael Slepian. "Comparison of Numerical Methods for Thermal Performance Evaluation of Circuit Protection Devices in EV Application." ARAI Journal of Mobility Technology 2, no. 2 (2022): 228–32. http://dx.doi.org/10.37285/ajmt.1.2.9.

Full text

Abstract:

With the growing demand of electric vehicles, design of circuit protection devices is now an important consideration in automobile industry. Modern day circuit protection devices have been constantly undergoing miniaturization due to requirement of minimizing the foot print for use in electrical vehicles and aerospace applications. This size reduction makes thermal management one of the most important aspects of their design. Use of numerical model to predict heat transfer can significantly reduce the cost and time required in testing physical prototypes. In this paper, three different approaches for numerically predicting temperature rise of circuit breakers are discussed and compared from the point of view of accuracy and computational effort. The three methods are 1) Finite volume based analysis in which conjugate heat transfer inside and outside the breaker is modelled by solving Navier-Stokes equations 2) Finite element based heat conduction model in which convection is modelled as boundary condition instead of solving for fluid motion, and 3) Thermal network based model which uses electrical analogy of heat transfer to solve a thermal resistance network. In the first two iterative models mentioned above, heat generation from current-carrying parts is calculated by solving Maxwell’s equations of electromagnetics by Finite element method. Eddy current losses and temperature dependence of electrical conductivity is considered in the calculation of heat loss. In all three methods, electrical and thermal contact resistances are added at appropriate locations based on analytical calculations. All three methods have been validated with temperature rise test results. In this paper, the heat loss and temperature of a molded case circuit breaker have been predicted by all three methods discussed above. It is observed that the Finite volume-based method is the most accurate amongst the three methods. It can computationally predict air motion and air temperature at critical locations. However, this additional accuracy comes at the cost of added effort in terms of additional mesh count and computation. The Finite elementbased method gives good accuracy but does not predict air temperature. The analytical network-based model is less accurate compared to other methods and relies on product expertise and experience. Based on the study, the following recommendations are made:1) The finite element-based method is best suited to evaluate designs which do not alter flow pattern significantly 2) The finite volume method is recommended to evaluate effect of flow altering design changes 3) The network-based model is recommended for initial evaluation of correct cross sections of current carrying members.

APA, Harvard, Vancouver, ISO, and other styles

7

Fyodorova, V. A., V. F. Kirichenko, and G. V. Glazyrin. "Development of the automatic system for switching on the generating equipment for parallel operation with the electric power system." Power engineering: research, equipment, technology 25, no. 4 (2023): 3–17. http://dx.doi.org/10.30724/1998-9903-2023-25-4-3-17.

Full text

Abstract:

RELEVANCE. Synchronization is an algorithm of actions to switch on synchronous generators for parallel operation with the power system and is an integral part of the power generation process. In practice, the process of synchronization involves some difficulties. The developed automatic synchronization device is digital and is integrated into the microprocessor terminal of the CPA-M complex, allowing to solve the arising problems by means of synchronization using different methods, including the developed method of accelerated synchronization.THE PURPOSE. Create a comprehensive automated synchronization system based on the CPA-M microprocessor terminal (manufactured by a Novosibirsk company) with a variability of methods. Analyze existing synchronization devices, synthesize traditional synchronization methods, create a non-traditional intermediate method on their basis and integrate it into the automated system. Develop algorithms for the measuring and logical units, as well as for the synchronization system output unit. Experimental testing of algorithms by feeding real signals from voltage sensors on a physical model with a rotating synchronous machine (12 kW generator under test).METHODS. The problem of research studied using theoretical and practical approaches. Theoretical methods - analysis, synthesis and classification. Practical methods - modeling in MatLab® environment, comparison, experiment, observation.RESULTS. The paper describes the architecture, construction principles, settings selection of the synchronization system, as well as the interaction of its logical part with adjacent units (measuring unit, output unit). The work gives a comprehensive description of the system setup and integration of its measuring and logic parts into the CPA-M microprocessor terminal with a test on a physical object.CONCLUSION. The system has extended functionality compared to analogs, allowing the use of traditional methods and the developed method of accelerated synchronization. The results predict reduction of capital costs for automation systems, as one device provides synchronization on several circuit breakers and reduction of generator operation costs, as using this system, machine parts exposed to unacceptable thermal and mechanical effects. The development is relevant for the elimination of emergencies in the power system and reducing thermal and dynamic impacts on the generator. The social importance of the project is the exclusion of the human factor. The prospect of using the development - in the educational process of the university and at real power facilities, in particular on large synchronous generators.

APA, Harvard, Vancouver, ISO, and other styles

8

Thuries, E., P. Van Doan, J. Dayet, and B. Joyeux-Bouillon. "Synthetic Testing Method for Generator Circuit Breakers." IEEE Power Engineering Review PER-6, no. 1 (1986): 49. http://dx.doi.org/10.1109/mper.1986.5528242.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Runde, M., G. E. Ottesen, B. Skyberg, and M. Ohlen. "Vibration Analysis for Diagnostic Testing of Circuit Breakers." IEEE Power Engineering Review 16, no. 10 (1996): 53. http://dx.doi.org/10.1109/mper.1996.4311023.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Thuries, E., P. Van Doan, J. Dayet, and B. Joyeux-Bouillon. "Synthetic Testing Method for Generator Circuit Breakers." IEEE Transactions on Power Delivery 1, no. 1 (1986): 179–84. http://dx.doi.org/10.1109/tpwrd.1986.4307905.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Vasiliev, S. A., E. G. Egorov, G. E. Egorov, et al. "Testing Low-Voltage Circuit Breakers for Ultimate Breaking Capacity." Russian Electrical Engineering 92, no. 8 (2021): 412–16. http://dx.doi.org/10.3103/s1068371221080137.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

van der Sluis, L., and W. A. van der Linden. "Short-Circuit Testing Methods for Generator Circuit-Breakers with a Parallel Resistor." IEEE Power Engineering Review PER-5, no. 10 (1985): 31. http://dx.doi.org/10.1109/mper.1985.5528683.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Frohlich, K. J. "Synthetic Testing of Circuit Breakers Equipped With a Low OHMIC Resistor with Special Respect to Generator Circuit Breakers." IEEE Power Engineering Review PER-5, no. 8 (1985): 59–60. http://dx.doi.org/10.1109/mper.1985.5526408.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Voshall, R. E., and A. Lee. "Capacitor Energy Storage Synthetic Testing of H.V.D.C. Circuit Breakers." IEEE Transactions on Power Delivery 1, no. 1 (1986): 185–90. http://dx.doi.org/10.1109/tpwrd.1986.4307906.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Der Sluis, L., and W. Van Der Linden. "Short Circuit Testing Methods for Generator Circuit Breakers with a Parallel Resistor." IEEE Transactions on Power Apparatus and Systems PAS-104, no. 10 (1985): 2713–20. http://dx.doi.org/10.1109/tpas.1985.319112.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Cwikowski, Oliver, Roger Shuttleworth, Mike Barnes, Antony Beddard, and Bin Chang. "Fault current testing envelopes for VSC HVDC circuit breakers." IET Generation, Transmission & Distribution 10, no. 6 (2016): 1393–400. http://dx.doi.org/10.1049/iet-gtd.2015.0863.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Frohlich, K. J. "Synthetic Testing of Circuit Breakers Equipped With a Low Ohmic Parallel Resistor (With Special Respect to Generator Circuit Breakers)." IEEE Transactions on Power Apparatus and Systems PAS-104, no. 8 (1985): 2283–88. http://dx.doi.org/10.1109/tpas.1985.318810.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Voshall, R. E., and A. Lee. "Capacitor Energy Storage Synthetic Testing of H. V. D. C. Circuit Breakers." IEEE Power Engineering Review PER-6, no. 1 (1986): 50. http://dx.doi.org/10.1109/mper.1986.5528243.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Kaumanns, J., K. Möller, and H. Weinert. "New testing method for the classification of contact materials for vacuum circuit breakers." European Transactions on Electrical Power 10, no. 2 (2007): 99–104. http://dx.doi.org/10.1002/etep.4450100206.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Kim, Yun-Seong, Jong-Hyuk Choi, Rahul S. Patil, and Min-Won Park. "Improved Testing Method Using the Multi-Transformers Synthetic Circuit to Verify Capacitive Charging Current Switching Capability of High-Voltage Circuit Breakers." Energies 16, no. 12 (2023): 4764. http://dx.doi.org/10.3390/en16124764.

Full text

Abstract:

To perform a capacitive current switching test (CCT) at AC extra-high-voltage (EHV) and above level, this paper proposes a new multi-transformer synthetic circuit (MTSC) test method that replaces the general synthetic test method using capacitor banks. An MTSC method has a simpler circuit structure compared to other synthetic testing methods and has higher equivalence (especially recovery voltage and TRV) and validity. Using this method, CCTs for circuit breakers (CBs) of the AC 420 kV voltage class were performed as a field test using the IEC 62271-100 standard. To verify that the test method was valid, test results were analyzed and compared with the requirements of a standard. Consequently, the MTSC method completely covered the requirements of the standard.

APA, Harvard, Vancouver, ISO, and other styles

21

Hopper, Warren. "One Mill's Experience Using MAC Testing to Evaluate Vacuum Interrupter Integrity in 15 kV Vacuum Circuit Breakers." IEEE Transactions on Industry Applications 53, no. 1 (2017): 774–79. http://dx.doi.org/10.1109/tia.2016.2603459.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Fu, Ruiyun, Sagar Bhatta, Joseph M. Keller, and Yucheng Zhang. "Assessment of Cable Length Limit for Effective Protection by Z-Source Circuit Breakers in DC Power Networks." Electronics 10, no. 2 (2021): 183. http://dx.doi.org/10.3390/electronics10020183.

Full text

Abstract:

This paper introduces groundbreaking research on how to assess the Cable Length Limit (CLL) to ensure effective protection by Z-source Circuit Breakers (ZCBs) in DC power networks. It has been revealed that the line parameters of power cables have a significant impact on the cutoff performance of ZCBs. The question of assessing the CLL has been raised as an unsolved problem. In this paper, a method of CLL assessment is proposed based on physical models and simulation tests. To verify the proposed method, two studies were performed to assess the Cable Length Limits depending on fault levels and power delivery levels, respectively. The ZCB parameters were specified for a simulation testing system for a 5 MW distribution line feeder. The effectiveness of ZCB protection was tested in groups of simulation tests with various impacting quantities, i.e., cable lengths, fault current levels, and power delivery levels. The effective cable lengths for the ZCB to detect and successfully interrupt a faulty branch in the DC network were assessed and analyzed. The testing results prove that the CLL decreases along with a decreasing fault current level, as well as an increasing power delivery level. Based on data analysis, an equation was derived to calculate the effective length of the ZCB for DC lines, and the equation can be used to generate new CLL curves for various load-power requirements. This study could increase the reliability of a ZCB’s response to a fault in DC transmission and distribution lines. It could also help power system designers/operators to maintain reliable protection with ZCBs in DC power system networks.

APA, Harvard, Vancouver, ISO, and other styles

23

Langenberg, Nils, Simon Kimpeler, and Albert Moser. "Interconnecting Power-Electronic Buck Converter Modules in a Novel High-Power Test Bench for MVDC Circuit Breakers." Energies 15, no. 21 (2022): 7915. http://dx.doi.org/10.3390/en15217915.

Full text

Abstract:

Advances in medium voltage direct current (MVDC) technologies and the penetration of extended MVDC systems are still significantly hindered by the lack of adequate direct current (DC) switching equipment. The fundamentally different fault current behavior in case of a DC fault, compared to faults in alternating current (AC) systems, with regard to the characteristics and development of fault currents and their interruption make dedicated test procedures necessary. One testing approach is the application of a power-electronic buck converter (PEBC) to simulate relevant stresses on DC switching equipment during a DC fault current interruption. Since the associated requirements, especially regarding current ratings of several kiloamperes, cannot be fulfilled by using a singular PEBC, a modularization becomes necessary. However, particularly in high-power applications, the interconnection of several PEBC modules poses significant challenges. In this article, a demonstrator PEBC-based high-power test circuit for the provision of relevant testing parameters is presented. The underlying challenges and respective solutions with regard to the interconnection of, in total, 120 individual PEBC modules are discussed. It can be shown that the harmonization of connection busbar inductances is the main contributor towards a stable and safe test circuit operation.

APA, Harvard, Vancouver, ISO, and other styles

24

Kumpalavalee, Suphon, Thanapong Suwanasri, Cattareeya Suwanasri, and Rattanakorn Phadungthin. "D-Distance Technique to Determine Failure Probability of Power Circuit Breaker." Energies 16, no. 2 (2023): 847. http://dx.doi.org/10.3390/en16020847.

Full text

Abstract:

In this paper, a new D-distance factor is proposed to determine the failure probability and to prioritize maintenance actions of power circuit breakers in high-voltage substations. The D-distance factor is calculated by using the condition index and renovation index of a high-voltage circuit breaker (HVCB). To facilitate effective decision-making on maintenance with a simple method and less computational effort, the proposed model incorporates the weighting–scoring method (WSM) and analytical hierarchy process (AHP) with the various diagnostic methods for condition index assessments as well as the operation requirements of HVCBs for renovation index assessments. Many significant parameters from circuit breaker testing, such as insulation resistance, contact resistance, contact timing, SF6 gas measurements, gas leakage rate, visual inspection, etc., have been considered for condition index determination. In addition to these, other significant parameters, such as age of the circuit breaker, age of the interrupter and mechanism, number of fault current interruptions, actual load current to rated current ratio, actual short circuit current to rated interrupting current ratio, maintenance ability, spare parts availability, maintenance expertise level, etc., are also considered for renovation index determination. To validate the proposed model, the practical test data of twenty 115 kV HVCBs in various substations of a distribution utility in Thailand were utilized and tested. By analyzing the actual condition and operation requirement of the circuit breaker, the output, as the condition index and renovation index using the proposed method, is discussed with HVCB experts in the utility to adjust the scores and weights of all criteria to obtain the most accurate and reliable model. The results show that the D-distance technique measured from the risk matrix, which is defined as the failure probability, can be used to rank the maintenance schedule from urgent to normal maintenance tasks. In addition, various failure probabilities in the risk matrix of the circuit breaker can be used to determine the appropriate maintenance strategies for the power circuit breaker in each group. Finally, the proposed method could help the utility managers and maintenance engineers manage the maintenance planning effectively and easily for thousands of HVCBs in the grid, and it can be further applied with other high-voltage equipment in both transmission and distribution systems to facilitate the maintenance activities according to available costs and human resources.

APA, Harvard, Vancouver, ISO, and other styles

25

Guo, Ze, Linjing Li, Weimeng Han, and Zixuan Guo. "SF6 High-Voltage Circuit Breaker Contact Status Detection at Different Currents." Sensors 22, no. 21 (2022): 8490. http://dx.doi.org/10.3390/s22218490.

Full text

Abstract:

Currently, the online non-destructive testing (NDT) methods to measure the contact states of high-voltage circuit breakers (HVCBs) with SF6 gas as a quenching medium are lacking. This paper aims to put forward a novel method to detect the contact state of an HVCB based on the vibrational signal. First, for a 40.5-kV SF6 HVCB prototype, a mechanical vibration detection system along with a high-current generator to provide the test current is designed. Given this, vibration test experiments are carried out, and the vibration signal data under various currents and corresponding contact states are obtained. Afterward, a feature extraction method based on the frequency is designed. The state of the HVCB contacts is then determined using optimized deep neural networks (DNNs) along with the method of adaptive moment estimation (Adam) on the obtained experimental data. Finally, the hyperparameters for the DNNs are tuned using the Bayesian optimization (BO) technique, and a global HVCB contact state recognition model at various currents is proposed. The obtained results clearly depict that the proposed recognition model can accurately identify five various contact states of HVCBs for the currents between 1000 A and 3500 A, and the recognition accuracy rate is above 96%. The designed experimental and theoretical analysis in our study will provide the references for future monitoring and diagnosis of faults in HVCBs.

APA, Harvard, Vancouver, ISO, and other styles

26

Li, Lin. "System anti-jamming technology in the design of intelligent single chip computer constant current source of field strength machine." Journal of Intelligent & Fuzzy Systems, May 22, 2021, 1–11. http://dx.doi.org/10.3233/jifs-219073.

Full text

Abstract:

With the development of the electric power industry, the technical level of automatic testing equipment for the reliability of electrical component circuit breakers in the transmission and distribution network is getting higher and higher. The stability and accuracy of the test power supply are the basis for ensuring the pass rate of the test product. Most of the electrical testing and testing equipment has defects such as inaccurate power supply current regulation, low power, and low level of intelligence, which are difficult to meet the testing requirements. Based on the theory of a closed-loop control system, this paper adopts embedded system design technology to realize a high-current, high-power, high-stability digital constant current source system for line detection. This paper studies the rule-based intelligent anti-jamming decision engine design and system anti-jamming performance analysis of NC-OFDM system. We give the design of an intelligent anti-jamming decision engine based on rule-based decision-making, and focus on two intelligent anti-jamming decision-making algorithms: Adaptive Modulation and Coding (AMC) algorithm based on signal-to-noise ratio difference and packet error rate and Adaptive Sub-Band Selection (ASBS) algorithm. Experimental test results show that the output current range is 200 mA to 2000 mA, the system has realized a microstep adjustment of±5 mA, and the absolute error of current measurement is less than 0.3%+4 mA. The system is stable and reliable, and has high practical value in the field of high precision and low power.

APA, Harvard, Vancouver, ISO, and other styles

27

Jia, Shenli, Qiang Tang, Shixin Xiu, et al. "Current interruption tests of HVDC circuit‐breakers: Requirements, methods and a testing case." IET Generation, Transmission & Distribution, May 23, 2022. http://dx.doi.org/10.1049/gtd2.12511.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

"Correction to “Testing of Reactor Switching for UHV Circuit Breakers” [Jun 15 1172-1178]." IEEE Transactions on Power Delivery 31, no. 2 (2016): 761. http://dx.doi.org/10.1109/tpwrd.2016.2540939.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!