Relevant bibliographies by topics / Short-circuit calculation

Contents

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

Academic literature on the topic 'Short-circuit calculation'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "Short-circuit calculation"

1

Fu, Pengwu, Dongwen Yang, Zhi He, Zhenfeng Duan, and Dengmei Wang. "Practical calculation of asymmetric short circuit current of DFIG connected to distribution network." E3S Web of Conferences 145 (2020): 02075. http://dx.doi.org/10.1051/e3sconf/202014502075.

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In view of the existing complex analytic calculations of DFIG short-circuit current are hardly applied in engineering projects, a practical calculation of asymmetric short-circuit current of DFIG is proposed. According to the complex sequence and their Thevenin equivalent model of DFIG network, the composition of each sequence component of DFIG short-circuit current is analysed. Moreover, considering the low-voltage ride through strategy of DFIG, the negative sequence periodic components of short circuit current are well analysed during the crowbar activation and deactivation, and the formula of the negative sequence periodic components of short circuit current are derived. On the basis of positive and negative sequence open circuit voltage, calculating impedance and rotor current, the judgement of crowbar activation is established. The pre-calculated surfaces of negative sequence periodic components of short circuit current are proposed, and the procedure for calculating the asymmetric short-circuit current of DFIG is designed. Finally, the proposed method is verified by simulation.
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Zhang, Hong, Xu Hui Ma, and Xiu Ye Yin. "The Building of Offshore Facilities Power System’s Equivalent Circuit Model." Advanced Materials Research 219-220 (March 2011): 648–51. http://dx.doi.org/10.4028/www.scientific.net/amr.219-220.648.

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With the development of technology, the power system of offshore facilities (for short: power system) is increasingly complex, short-circuit current calculation process also becomes more complex. The simple recursive algorithm can not meet the requirements of short-circuit current calculation in complex power system. The paper, basing on the principle of short-circuit current calculation, taking modeling ideas, created an equivalent circuit model of power system for short-circuit current calculation. The equivalent circuit model can be used to simplify the progress of calculation and meet the needs of the power system development.
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Meško, Nina, Branimir Ćućić, and Damir Žarko. "Short-circuit stress calculation in oval windings." Procedia Engineering 202 (2017): 319–26. http://dx.doi.org/10.1016/j.proeng.2017.09.720.

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KALINICHENKO, V., and I. PRIDATKO. "Some aspects of the calculation of short circuits in mine distribution networks. The calculation of the effective values of the short-circuit currents is carried out in order to determine the minimum." Journal of Electrical and power engineering 14, no. 1 (February 27, 2020): 66–69. http://dx.doi.org/10.31474/2074-2630-2020-1-66-69.

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The calculation of the effective values of the short-circuit currents is carried out in order to determine the minimum value of the current of the two- phase short-circuit required to select the settings of the means of protection, as well as the maximum value of the current of the three-phase short-circuit required to test the switching equipment for the ability to switch off. In most studies, the calculation of short-circuit currents is carried out only taking into account the total resistance of the transformer substation and the cable network. They also take into account the maximum short-circuit power (100MVA) due to the use of high-voltage explosion-proof switchgear type KRUV-6 without taking into account the influence of the external network. An external network, in turn, may limit the short-circuit power below 100MVA. The calculation of the short-circuit power of the external system with regard to the network parameters was considered. The actual magnitude of this capacity differs from that accepted in the known calculations and is below these values due to the natural or artificial introduction of reactor reactance and causes an error of 10-40%. Remote short-circuits of the distribution network reduce the short-circuit power of the input terminals of the step-down transformers, and therefore the influence of the external network on the short-circuit currents in the district networks increases. This approach will allow the determination of short-circuit currents in the mine distribution networks with higher accuracy. This will reduce the risk of accidents in an explosive mining environment.
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Zhao, Tie Ying, and Yan Wen Wang. "Current Limiting Reactor's Reactance Value Selection Based on Short-Circuit Transient Analysis." Advanced Materials Research 722 (July 2013): 223–27. http://dx.doi.org/10.4028/www.scientific.net/amr.722.223.

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Current limiting reactor can increase systems short circuit impedance so as to limit short circuit current. Current limiting reactor is directly involved in whole short circuit process when a short circuit fault occurs in a power system, which makes short-circuit current change more complex. Short circuit current level is affected by current limiting reactors parameters; a current limiting reactor with proper impedance value can maintain short-circuit current at an acceptable range. A short circuit transient process of a distributing network with current limiting reactor was analyzed, and the formula of current changing in short circuit transient process was deduced; according to the current changing formula, an engineering calculation formula of current limiting reactors impedance was derived. The case calculation shows that current limiting reactor meeting the need of the engineering calculation formula can reach the system current limiting requirement.
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Lu, Guang Ming, Wei Zhang, Jian Feng Yan, Yong Jun Yu, Zhi Hong Yu, Yan Hui Qin, Ying Lv, et al. "Comparative Analysis of the Calculation Results of Online Short-Circuit Current Based on PSASP and Fault Wave Recording." Advanced Materials Research 1070-1072 (December 2014): 897–901. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.897.

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In daily operation process,the results of online short-circuit current calculation and fault wave recording is different, the differences between the two results affected the dispatcher’s decision. In-depth analysis of the calculation process and finding the possible causes of the differences should be done. The on-line PSASP short-circuit current calculation based on power flow and scheme was studied. The boundary conditions and calculation models of two methods were studied, the influence of the modeling scope and equivalent circuits to the short-circuit current was also studied. Fault wave recording calculated short-circuit current through forward calculation, the middle to both sides calculation and backward calculation, and the differences of the three calculation mode were also analyzed. Through the above analysis and comparison, online data equivalent to 220kV high voltage side of the transformer greatly impacts short-circuit current, but effective value calculation method of fault wave recording has a little impact on the short-circuit current, mainly in the following reasons, the first one is that non-dispatching power plant is equivalent to a load, the second one is that several different types of load is equivalent to a load using one load model, the third one is that all devices connecting to low voltage side of the 220kV transformers are equivalent to 220kV. Conclusions of the analysis can provide the basis for the practical work of online short-circuit current calculation.
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Zheng, Han Bo, Jin Hua Han, Wei Wang, Xiao Gang Li, and Yu Quan Li. "Computation of Radial Electromagnetic Forces on Power Transformer LV Windings due to Short-Circuit Currents." Advanced Materials Research 732-733 (August 2013): 1069–73. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.1069.

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The short-circuit electromagnetic force in radial direction induces critical mechanical stress on a power transformer. In this paper, the radial short-circuit forces which are exerted on transformer low voltage (LV) windings are investigated. Firstly, the mechanisms of leakage flux and short-circuit electromechanical forces in transformer coils are analyzed. Afterwards, based on IEC standards followed by short-circuit tests, calculations of radial short-circuit forces and evaluations of the ability to withstand short currents in LV windings are developed. The case studies and comparisons with improved measures show that the evaluation and calculation method is feasible and effective, and this method also offers three useful ways to strengthen the ability to withstand short-circuit currents for transformer windings.
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Lagace, P. J., L. A. Dessaint, M. Lavoie, J. Mahseredjian, and A. Chartrand. "Transient short circuit current calculation using decoupled networks." IEEE Transactions on Power Delivery 14, no. 3 (July 1999): 1110–14. http://dx.doi.org/10.1109/61.772381.

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Pan, Pei Ming, Huan Lian, Fei Xiang Hui, and Wei Pu Tan. "Calculation and Analysis of Three-Phase Transformer Short-Circuit Current." Advanced Materials Research 986-987 (July 2014): 1914–17. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1914.

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Analysis the important significance of transformer short-circuit current calculation for the stable operation of power system. Lead to three different types of transformer short-circuit current calculation methods, this literature uses a simplified example to compare the characters among three methods. Meanwhile, calculation by using the theory to get a quantitative range of simplified method. The calculation results and theory support each other, finally, summarizing the application range of the three methods, and offering a reference for reasonable selection of short-circuit current methods.
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Liu, Jian Jun, Jian Min Wang, Chong You Jing, Chang Zai Fan, and Yuan Zhai. "Numerical Analysis on Short-Circuit Force Parameters of Windings for Power Transformer." Applied Mechanics and Materials 138-139 (November 2011): 764–69. http://dx.doi.org/10.4028/www.scientific.net/amm.138-139.764.

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The Simplified model of both calculating leakage magnetic field and mechanical force of windings at short circuit condition for a 120MVA/220kV power transformer is set up. The leakage magnetic field ‚ short-circuit force and stress in transformer windings are analyzed and their distributing characteristics are acquired respectively by using FEM. The calculation method and results are validated by withstanding short circuit strength test of the product. A number of useful suggestions are given for design of power transformers.
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Dissertations / Theses on the topic "Short-circuit calculation"

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Guliš, Tomáš. "Zkratový výpočet a nastavení ochran generátorů vodní elektrárny Lipno I." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-316972.

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This Master 's thesis deals with the topic of protection of generators in case of faults, short circuits and their calculation according to the valid standard ČSN EN 60909-0 ed.2. The practical part includes the calculation of the minimum and maximum short-circuit currents of the Lipno I hydroelectric power plant at various locations using the NetCalc calculation program and for comparison of program funcionality provides the manual calculation. Next chapter deals with the calculation of settings of each protection function of the SIEMENS Siprotec 7UM622 protection relay, which is used to protect main generators of this hydropower plant.
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Procházka, Jiří. "Porovnání výpočtů zkratových proudů simulačními programy s normou ČSN EN 60909 ed.2." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400593.

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This master's thesis deals with the comparison of the short-circuit current calculation for a model example according to the standard IEC 60909-0:2016 with simulation programs. The first part deals with short-circuit in general together with an example of calculation of short-circuit currents. The next part of the master’s thesis deals with creating models of network elements by different simulation programs. The last part deals with dynamic simulation of model example together with programs settings. Finally, the results of simulations are evaluated.
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Mohammadi, Houshang C. "Short-circuit current calculations and protective relay coordination for industrial and commercial power systems." Ohio : Ohio University, 1986. http://www.ohiolink.edu/etd/view.cgi?ohiou1183141301.

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Mohammadi, Houshang. "Short-circuit current calculations and protective relay coordination for industrial and commercial power systems." Ohio University / OhioLINK, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1183141301.

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Cabral, Roberto José. "Análise numérica de curto circuito utilizando Componentes Simétricas e Componentes de Fases para obter índices de afundamentos de tensão." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2010. http://hdl.handle.net/10183/28797.

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O presente trabalho apresenta estudos teóricos e uma revisão bibliográfica sobre diversos aspectos relevantes à qualidade da energia elétrica, principalmente os afundamentos de tensão em sistemas de energia elétrica. A avaliação da eficiência de um sistema elétrico de potência é quantificada por diversos fatores de qualidade, destacando-se a continuidade do fornecimento de energia elétrica aos consumidores. Nesse contexto, a análise de faltas é muito importante e demanda especial atenção quando do projeto do esquema de proteção e dos índices de qualidade do sistema elétrico de distribuição. Assim sendo, o presente trabalho apresenta uma comparação entre os métodos de cálculo de curtos circuitos convencionais: Método das Componentes Simétricas e o Método das Componentes de Fases. Também é apresentada uma nova aproximação da obtenção da matriz de impedância de cada elemento do sistema elétrico de potência, para a resolução pelo Método das Componentes Simétricas em sistemas desequilibrados. Usando um modelo particular de um sistema elétrico de distribuição são efetuadas simulações computacionais para avaliar o desempenho do algoritmo proposto. As simulações de curtos circuitos são realizadas com rotinas no ambiente MatLab e logo comparadas com os resultados do programa ATP/EMTP. Os cálculos de afundamentos de tensão são realizados para diferentes tipos de faltas: trifásica-terra (FFFT), fase-terra (FT), fase-fase (FF) e fase-fase-terra (FFT). Apesar de o trabalho estar centrado em sistemas de distribuição, as conclusões podem ser referidas a qualquer tipo de sistema de energia elétrica. Os resultados obtidos nessas simulações mostram que a aproximação proposta que consiste da obtenção da impedância de componentes simétricas de cada elemento, apresenta um ótimo desempenho. O objetivo desta comparação é identificar o método de cálculo de curto-circuito que ofereça a viabilidade de simplificação nos procedimentos de cálculo, como também na modelagem dos componentes do sistema elétrico de energia, mantendo continuamente uma boa precisão dos resultados dentro dos limites de tolerância. Com esta simplificação se pode reduzir significativamente o tempo das simulações, o processo de análise e tomada de decisão mais ágil e eficiente.
This work presents theoretical studies and a literature review on various aspects relevant to the quality of electric power, especially voltage sags in electric power systems. Assessing the efficiency of a power system is quantified by several quality factors, highlighting the continued supply of electricity to consumers. In this context, the analysis of faults is very important and demand special attention when designing the protection scheme and the quality indexes of the electrical system of distribution. Therefore, this work presents a comparison between the calculation methods of conventional short circuit: Method of Symmetrical Component and Method of Phases Components. It also presents a new approach to obtaining the impedance matrix of each element of the electric power system for the resolution by the Method of Symmetrical Components in unbalanced systems. Using a particular model of an electric distribution system computer simulations are carried out to evaluate the performance of the algorithm. Simulations of short circuits are performed with routines in MatLab environment and then compared with the results of the software ATP/EMTP. The calculations of voltage sags are performed for different types of faults: three-phase- ground (FFFT), phase-ground (FT), phase-phase (FF) and phase-phase- ground (FFT). Although the work is centered on distribution systems, the findings can be referred to any type of power system. The results obtained in these simulations show that the proposed approach consists of obtaining the impedance of symmetrical components of each element, presents a great performance. The purpose of this comparison is to identify the method of calculating short-circuit that provides the feasibility of simplifying the calculation procedures, but also in the modeling of system components, electric power, continuously keeping a good accuracy of results within the tolerance limits. With this simplification can significantly reduce the time of simulations, the process of analysis and decision making more agile and efficient.
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Chun-Yu, Lin, and 林俊宇. "Design and Development of Short Circuit Calculation Software for Ships." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/86110521700572187299.

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碩士
國立高雄海洋科技大學
輪機工程研究所
97
Short circuit current analysis is used to calculate fault currents at different fault locations in ship electric power systems for determining proper protection devices. In the past, ship building corporations have a well-done computation program for the low voltage system based on the existing standard IEC 60363. However, in the recent years the new standard is released and medium voltage systems are increasingly adopted in ship electric power system designs. Therefore, the effectiveness of existing short circuit current calculation program is necessary to be modified and verified against the changes. The aim of this thesis is to develop a set of analysis program for short circuit current calculation based on the new standard IEC 61363-1. The main differences between standards IEC 61363-1 and IEC 60363 are compared and analyzed. Two practical ship electric power systems including low-voltage and medium-voltage schemes and used for the study and its performance is verified and compared with other available analysis softwares. The program can provide an accurate estimate in short circuit currents in ships and can also be used a basis for protection coordination design.
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Ming, Liu Pei, and 劉培民. "Calculation Methods for Maximum and Minimum Short Circuit Currents of Taipower Transmission System." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/60057148119550412538.

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碩士
國立清華大學
電機工程學系
92
This thesis presents the methodologies, tailored to the Taipower system, for calculating the maximum and the minimum three-phase short-circuit currents (SCC). By referring to the Korea、the Kyushu and the Kansai electric utilities, which have systems similar to Taipower, we compare the calculation rules of these three power utilities with the rules of Taipower and test all rules numerically on the same Taipower system data. Based on the numerical results, the thesis suggests revisions to the Taipower calculation rules. With respect to the maximum SCC, the thesis compares Taipower’s calculation rules with the IEC and IEEE as well as with the draft document(ER G74) proposed by the British power industry. The comparison accounts for all the influential factors on the calculation of the maximum SCC, such as decaying dc, decaying ac, the contact parting time for circuit breaker, voltage factor etc.. According to the numerical test results, the calculation formula for the decaying dc, adopted presently by Taipower, is acceptably close to that by the IEEE standard. The numerical comparison of Taipower rules with those of the above three power utilities further demonstrates the necessity of revising Taipower rules for a reduction on the maximum SCC values. As to the calculation for the minimum SCC, the thesis suggests the use of system SCC corresponding to the cumulative probability at 5% for the system hourly load distribution, as the minimum SCC for the year under evaluation. For comparison, the thesis also calculates the SCC on basis of Taipower’s present rules which accounts for the disconnection of system generators and transmission lines and transformers. The numerical comparison of Taipower rules with those of Korea、Kyushu and Kansai reveals that the SCC values resulted from Taipower rules, are among the highest of the four power utilities. Thus the thesis suggests Taipower revise the present rules by adopting the aforementioned SCC calculation approach which is based on the 5% probability for the system hourly load distribution throughout the year for calculation of the yearly minimum SCC. Before making this suggestion, we had surveyed the hourly SCC distribution throughout the year and denoted the SCC corresponding to the cumulative probability at 5% for the distribution as ISC,5%. The above suggestion has been made after comparing the ISC,5% with the SCC calculated on basis of the minimum(5%) load. In addition to the primary transmission, this thesis also presents the results of numerical analysis on the calculation of minimum SCC for the secondary transmission system. On basis of the results, we then make suggestions on the present Taipower rules for the minimum SCC calculation for the secondary transmission system.
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Israel, Toni. "Verhalten von Hochstrom-Steckverbindungen mit Kontaktelementen bei kurzer Strombelastung." 2020. https://tud.qucosa.de/id/qucosa%3A73095.

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In dieser Arbeit werden versilberte Hochstrom-Steckverbindungen mit Kontaktelementen betrachtet, die in der Elektroenergieversorgung bei Belastung mit Fehlerströmen im Bereich von 24 µs bis 5 s eingesetzt werden. Am Flach- und Rundeinbau der Kontaktelemente werden Kurzschlussversuche im Bereich von (0,01…5) s durchgeführt. Der Kurzschlussstrom erwärmt die Steckverbindung und die Kontaktelemente innerhalb dieser Zeit auf mehrere 100 °C und führt zu einer thermisch aktivierten Schädigung. Dabei baut sich die Kontaktkraft durch Spannungsrelaxation zum Teil ab, und es kann zum Verschweißen der Mikrokontakte und Blasenbildung durch lokales Ablösen der Be-schichtung kommen. Bei einer zu starken Schädigung kann ein sicherer Betrieb der Steckverbindung nicht mehr si-chergestellt werden. Daher werden für die Mechanismen der Schädigung Grenzwerte festgelegt und eine maximale Belastung definiert. Ausgehend von den experimentellen Untersuchungen wird ein Berechnungsmodell auf Basis der Finiten-Elemente-Methode weiterentwickelt. Ein vereinfachtes Widerstandsmodell der Punktkontakte abhängig von Kontaktkraft und Kontakthärte bildet dabei das Verhalten der Mikrokontakte nach. Da das Verhalten der Kontakthärte bei starker Erwärmung im ms-Bereich nur unzureichend erforscht ist, werden aus Experimenten näherungsweise die benötigten Parameter bestimmt. Mit dem erweiterten Berechnungsmodell ist es möglich, die thermische Wirkung praktischer Kurzschlussversuche nachzubilden. Eine wesentliche Erkenntnis ist, dass die Höhe des Stoßstroms zu Beginn des Kurzschlusses einen entscheidenden Einfluss auf die maximale Erwärmung hat. Bei sehr hohen Stoßströmen am Anfang eines Kurzschlusses wird der Kontaktwiderstand stark reduziert. Für den weiteren Verlauf des Kurzschlusses entsteht in den Kontakten daher weniger Wärme, als wenn diese Reduktion nicht stattfindet. Das bedeutet, dass DC-Kurzschlüsse unter Umständen zu einer höheren thermischen Belastung und mechanischen Schädigung führen können als AC-Kurzschlüsse mit gleichem Effektivwert. Experimente bestätigen diese Theorie. Dies gilt allerdings nur, wenn der Stoßstrom nicht zum sofortigen Verschweißen der Kontakte führt. Anhand der Erkenntnisse aus den Experimenten und Berechnungen werden Empfehlungen für die Auslegung und die Prüfung von Hochstrom-Steckverbindungen gegeben. Es zeigte sich, dass das für Prüfungen oft verwendete I2t-Kriterium bei Steckverbindungen nur sehr eingeschränkt anwendbar ist. Die Kurzschlussdauer kann damit nur um ca. (13…17) % verändert werden, ohne dass sich die Beanspruchung in der Prüfung unzulässig ändert. Alternativ schlägt die Arbeit das Ixt-Kriterium vor. Dieses lässt es bei bekannter Geometrie der Steckverbindung zu, einen Prüfstroms in einem vielfach größeren Zeitbereich einzustellen und erzeugt dabei eine vergleichbare thermische Beanspruchung oder mechanische Schädigung. Ein Erwärmen der Steckverbindung auf die maximal zulässige Betriebstemperatur vor dem Kurzschluss, was bei-spielsweise bei einem Fehler im realen Betrieb stattfinden kann, hat einen vergleichsweise geringeren Einfluss auf die Erwärmung und die mechanische Schädigung. Hintergrund ist, dass die Vorerwärmung zu einer Reduktion der Kon-takthärte führt und damit große Kontaktflächen erzeugt, die einen geringen Kontaktwiderstand haben. Hierdurch entsteht weniger Verlustleistung, was die Erwärmung der Steckverbindung reduziert. Aus den gewonnen Erkenntnissen werden Empfehlungen für die Auslegung, Prüfung und die Modellierung des Kurz-schlussverhaltens von Steckverbindungen mit Kontaktelementen für die Elektroenergieversorgung abgeleitet.
In this thesis, silver plated plug-in connectors for electrical power supply under short time current load are investigat-ed. The duration of the short time or short circuit current load is between 24 µs and 5 s. Both flat and round model plug-in connectors are stressed with the short time current. This current heats the plug and socket as well as the contact elements by several hundred Kelvin, which can lead to thermally induced damages. These may include a reduction of the contact force, welding of the contact points and blistering of the coating. If the damage is too severe, safe operation at the rated continuous current may not be able after the short circuit. Thus, limiting loads are defined which ensure a safe operation. Based on the experiments, a finite element model is refined. A simplified model of contact points is used to imple-ment the contact behaviour. This model implements the overtemperature in the contacts, the contact hardness and the contact force into the calculation. In fact, few data for load in the range of milliseconds are available on this matter. Hence, experiments are used for an approximation of the required parameters. The refined model allows for a good correlation between experiments and calculated data. A key finding is that the magnitude of peak current at the beginning of the short circuit has a decisive influence on the maximum heating. In case of a very high peak current at the beginning of a short circuit, the contact resistance is greatly reduced. For the further course of the short-circuit, therefore, less heat is generated in the contacts than if this reduction did not take place. This means that DC short circuits can under certain circumstances lead to higher thermal stress and mechanical damage than AC short circuits with the same RMS value. This is only valid if the peak current does not heat the contact points up to their welding temperature. Experiments confirm this theory. Recommendations for the dimensioning and testing of high current connectors are given on the basis of the experi-ments and the calculations. It was shown that the I²t-criterion, which is often used for altering the test duration in recommended standards, can only be applied to a very limited extent. The short circuit duration can only be changed by about (13…17) % or otherwise the severity of the mechanical damage is likely to change as well. As an alternative, it is proposed to use the newly introduced Ixt-criterion. If the geometry of the connector is known, this criterion allows alternating the short circuit duration in a broader range without major changes in the severity of the test. In a real world application, short circuits may occur while the connectors are under heavy load, which means that at the beginning of the short time current, the connector is preheated. Tests showed that this has only a minor impact on the temperature rise and the mechanical damage of the contact elements. The reason for this behaviour is that, due to the preheating, the hardness of the contact material drops and the contact area is enlarged. This results in a comparatively lower contact resistance and less power loss is generated. This reduces the influence of the higher start-ing temperatures to a certain degree. On the basis of the findings, recommendations are derived for the design, testing and modelling of the short-circuit behaviour of connectors with contact elements for electrical power supply.
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YU, LU-ZHENG, and 呂正瑜. "A Study on Calculations of Short-Circuit Currents in Shipboard Ring-Type Power Systems." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/g9h3mw.

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Abstract:
碩士
國立高雄海洋科技大學
輪機工程研究所
106
Short circuit current analysis is used to calculate fault currents at different fault locations in ship electric power systems for determining proper protection devices. In the past, ship building corporations and design centers have a well-done computation program for the radial power system based on the existing standard for ship short-circuit current calculation. However, in the recent years a new generation of loop power systems has increasingly been paid an attention and discussed by ship building corporations and design centers in the world. Therefore, the effectiveness of existing methods for short circuit current calculation is necessary to be verified against the changes. This project aims at developing a set of analysis model for calculation of short-circuit currents in naval ship closed-loop power systems through comparative analysis of international regulations by developed calculation tools and commercial power system analysis software.
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10

Zheng, Cheng-Wen, and 鄭程文. "Comparison of PowerFactory Simulation Results with Short-Circuit Current Calculations of IEC Technical Report TR 60909-4." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/7qj5by.

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碩士
崑山科技大學
電子工程研究所
107
A short circuit caused by an abnormal connection between the phase and the phase or between the phases of the power system during operation, or when it is caused by man-made or natural disasters. Since the instantaneous current value caused by the short circuit phenomenon is much larger than the rated current, excessive current of the short circuit may cause damage to the circuit or equipment, overheating, fire or explosion, thereby affecting the power supply. Therefore, we need to pre-evaluate the short-circuit current that may occur in the power grid, and install appropriate protection and elimination devices to ensure that the power grid is safe and reliable in the event of a short-circuit accident. The IEC technical report TR 60909-4 system short-circuit current calculation is a standard example, and DIgSILENT's PowerFactory is a professional grid simulation platform. This paper wants to simulate the short-circuit current value with the same system architecture and specifications, and then with IEC Technical report TR 60909-4 compares the numerical differences with each other. The simulation accuracy of the PowerFactory software was verified.
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Books on the topic "Short-circuit calculation"

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short circuit calculation. Ec & M Books, 1999.

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(Editor), Ginger West, ed. Short Circuit Calculations: The Easy Way. Ec & M Books, 1999.

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IEEE Industry Applications Society. Power Systems Engineering Committee., IEEE-SA Standards Board, and American National Standards Institute, eds. IEEE recommended practice for calculating short-circuit currents in industrial and commercial power systems. New York, N.Y: Institute of Electrical and Electronics Engineers, 2006.

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Book chapters on the topic "Short-circuit calculation"

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Hadjsaid, Nouredine, Ion Trisstiu, and Lucian Toma. "Short-Circuit Currents Calculation." In Handbook of Electrical Power System Dynamics, 229–90. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118516072.ch5.

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Gu, Yungao, Yuexiao Han, Jian Li, and Chenghua Shi. "Short-Circuit Current Calculation of Distribution Network Based on the VDNAP." In Lecture Notes in Electrical Engineering, 317–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14350-2_40.

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Wang, YuMei, and Zhan Zhang. "The Approximate Method of Three Phase Short-Circuit Current Calculation Based on the Per-Unit Value Form of Ohm’s Law." In Advances in Computer Science, Environment, Ecoinformatics, and Education, 203–9. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23339-5_37.

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"Short circuit calculation." In Distribution Systems Analysis and Automation, 115–46. Institution of Engineering and Technology, 2020. http://dx.doi.org/10.1049/pbpo147e_ch4.

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"Calculation of short-circuit currents." In Protection of Electricity Distribution Networks, 11–30. Institution of Engineering and Technology, 2011. http://dx.doi.org/10.1049/pbpo065e_ch2.

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"Calculation of Short-Circuit Currents." In Short Circuits in Power Systems: A Practical Guide to IEC 60909-0, 147–59. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527803378.ch11.

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Hewitson, L. G., Mark Brown, and Ramesh Balakrishnan. "Simple calculation of short-circuit currents." In Practical Power System Protection, 11–25. Elsevier, 2005. http://dx.doi.org/10.1016/b978-075066397-7/50003-2.

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"Examples: Calculation of Short-Circuit Currents." In Short Circuits in Power Systems: A Practical Guide to IEC 60909-0, 233–71. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527803378.ch18.

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"Load-Flow and Short-Circuit Current Calculation." In Power System Engineering, 181–211. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527679065.ch11.

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"Load-Flow and Short-Circuit Current Calculation." In Power System Engineering, 173–203. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2008. http://dx.doi.org/10.1002/9783527622795.ch11.

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Conference papers on the topic "Short-circuit calculation"

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Wang Shishan, Liu Zeyuan, Li Yanming, Guo Yinna, and Gao Hong. "Calculation of Short-circuit Mechanical Strength for Powerformer." In 2006 International Conference on Power System Technology. IEEE, 2006. http://dx.doi.org/10.1109/icpst.2006.321523.

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GAO, Feng, Xilan ZHAO, Huijing BI, and Gang HUANG. "Calculation of Short Circuit Based on Compensation Method." In 2017 International Conference on Electronic Industry and Automation (EIA 2017). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/eia-17.2017.10.

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Ge, J. T., W. Cao, Z. G. Ding, and Y. Yu. "Short-circuit current calculation approach with dynamic load considered in PSS/E short circuit portion." In 2012 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia). IEEE, 2012. http://dx.doi.org/10.1109/isgt-asia.2012.6303323.

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Gugale, Priyanka, and Mirko Palazzo. "Application of Circuit-Breaker Standards in Short-Circuit Current Calculation for Generator Circuit-Breakers." In 2020 IEEE Electric Power and Energy Conference (EPEC). IEEE, 2020. http://dx.doi.org/10.1109/epec48502.2020.9320012.

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Ghanavati, G., S. M. Kouhsari, A. Koochaki, and M. Mahmoodan. "Calculation of transformer internal faults in short circuit analysis." In Energy Society General Meeting. IEEE, 2008. http://dx.doi.org/10.1109/pes.2008.4596059.

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Jie Ma, Debin Huang, Yi Tang, Changjing Wu, Luhua Xing, and Qing Chen. "Short circuit current calculation of doubly fed induction generator." In 11th IET International Conference on Developments in Power Systems Protection (DPSP 2012). IET, 2012. http://dx.doi.org/10.1049/cp.2012.0121.

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Yu, Xiao, Shanshan Wang, Bing Zhao, Zhida Su, Hongfu Wang, and Hongying Peng. "ADPSS Based Short-circuit Current Calculation Method of MMC." In 2021 11th International Conference on Power, Energy and Electrical Engineering (CPEEE). IEEE, 2021. http://dx.doi.org/10.1109/cpeee51686.2021.9383389.

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Su, Chun-Lien, Jhih-Liang Chen, and Hai-Ming Chin. "Calculation of short-circuit currents in shore power connection systems." In 2015 IEEE IAS Joint Industrial and Commercial Power Systems / Petroleum and Chemical Industry Conference (ICPSPCIC). IEEE, 2015. http://dx.doi.org/10.1109/cicps.2015.7974046.

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Huang, Ruanming, Fei Fei, Mingze Zhang, Tianli Song, Wei Cao, Shicheng Gui, and Bilun He. "Calculation of branch short circuit asymmetrical current considering breaking sequences." In 2021 IEEE 4th International Electrical and Energy Conference (CIEEC). IEEE, 2021. http://dx.doi.org/10.1109/cieec50170.2021.9510245.

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Huang, Ruanming, Haiqun Wang, Haoen Li, Aili Pang, Mengyao Zhang, Yuchen Qi, Wei Cao, et al. "Comparative analysis of new energy short-circuit current engineering calculation based on IEC standard and short-circuit capacity method." In 2021 IEEE 4th International Electrical and Energy Conference (CIEEC). IEEE, 2021. http://dx.doi.org/10.1109/cieec50170.2021.9510688.

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Reports on the topic "Short-circuit calculation"

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Yuri Shane. SHORT CIRCUIT CALCULATION (TEMPORARY POWER). Office of Scientific and Technical Information (OSTI), July 1995. http://dx.doi.org/10.2172/875323.

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