fault analysis in power systems

... as faults, lightning surges, and any kind of switching operations including commutation of valves In this study, simple line to ground faults are simulated and transient recording during the initial ... X 10-3 Using SATURATION Routine • Input RMS V-I saturation curve, including (0,0), point at origin • Run EMTP supporting routine SATURATION to get corresponding peak (current, flux-linked) The ... matured and certain intelligence in the modelling has to be considered The following document certain steps in the problem taken in the modelling of the network a) Constructing the overall system...

Ngày tải lên: 06/10/2015, 20:50

... In: Power engineering society summer meeting, 25–25 July 2002, vol IEEE, pp 1360–1365 42 Shahidehpour M, Yamin H, Li Z (2002) Market operation in electric power systems, forecasting, scheduling ... “Handbook of Power Systems I & II,” published by Springer in 2010 For decades, power systems have been playing an important role in humanity Industrialization has made energy consumption an inevitable ... decisions to the gas industry including determining optimal market dispatch and nodal prices Network Interactions are common in power systems This section of the book addresses the interaction between...

Ngày tải lên: 18/02/2014, 22:20

... Italy, in 2005 His research interest concerns power quality He is an IEEE Member since 2004 G Carpinelli was born in Naples, Italy, in 1953 He received his degree in electrical engineering from ... disturbances using an ESPRIT-based method,” in Proceedings of the IEEE Power Engineering Society Summer Meeting, vol 1, pp 437–442, Seattle, Wash, USA, July 2000 A Bracale was born in Naples, Italy, in 1974 ... contiguous time windows in the time observation period Tobs Since in distortion assessment in power systems, the waveforms can be considered to be the sum of sinusoids, the damping factors value...

Ngày tải lên: 22/06/2014, 23:20

... the machine as shown in Figure 2.2 [4] This wave links the stator winding, causing each coil of the stator winding to see an alternating flux This is the mechanism for inducing an alternating voltage ... detail in the explanations than one generally finds in the technical literature It is assumed that the user of this book is acquainted with power systems and the general way in which power systems ... to use In modeling the system for analysis, we find it useful to break the entire system up into physical subsystems, as in Figure 1.3, which shows the major subsystems associated with a single...

Ngày tải lên: 14/08/2014, 15:21

... Park, the M.S degree in mining engineering from the University of Pittsburgh, Pittsburgh, PA, and the Ph.D degree in mining engineering from The Pennsylvania State University in 1975, 1978, and ... ground -fault protection for mines,” U.S Bureau of Mines, Washington, DC, Final Rep for U.S Bureau of Mines Contract JO134025, 1984 [7] T Novak, L A Morley, and F C Trutt, Analysis of ac mine power ... provide selective tripping, all outgoing circuits in the motor-starting unit have instantaneous ground -fault protection Ground -fault protection is also provided in the power center and generally...

Ngày tải lên: 26/11/2015, 09:40

Ngày tải lên: 24/10/2013, 15:20

Ngày tải lên: 12/12/2013, 08:18

... System Indices (IEEE - RTS ) PLC 0.092546 Annualized System Indces (SaskPower) 0.000873 A B C D E Gen, Line, Gen, Line, Gen + Line Contingencies of A + Gen Contingencies of B + Gen Contingencies ... with increasing order contingency depth It is, therefore possible to terminate the tree progress in a particular path, if the contribution of higher contingencies is found to be insignificant in ... Contingencies of C + Line, Gen + I Line, Line + Gen Contingencies of D + Gen, Line, Gen + Line E t 25 TI O-Topolopicd -Approach [lo] 20+ Annualized System Inhces RBTS 0.009759 CPU Time in Seconds Figure...

Ngày tải lên: 03/01/2014, 19:40

... advance (Anderson, 1973) Faults can be divided into those involving a single (nodal) point in the network, i.e shunt faults, and those involving two points in one or more phases in a given plant component, ... India 605005; www.integra-india.com Printed and bound in Great Britain by MPG Books Ltd, Bodmin, Cornwall Preface Electrical power systems - an overview Power systems engineering - fundamental ... receiving end.8 A similar distinction arises with reactive power The receiving end in Figure 2.5 evidently has a lagging power factor and is absorbing VArs The sending end has a leading power...

Ngày tải lên: 16/02/2014, 20:20

... databases Then we introduce the notion of object orientation in database systems, which is applied to characterize the engineering database systems investigated in the remainder of this section ... models Springer Lecture Notes in in Database Systems 91 Computer Science, vol 89, J Encarnacao, Ed Springer-Verlag, Berlin ZANIOLA, C 1983 The database language GEM In Proceedings of the International ... allows the engineer to specify and manipulate real-world objects interactively ACM Computing Surveys, Vol 19, No 1, March 1987 An Analysis of Geometric Modeling in Database Systems Figure Integrated...

Ngày tải lên: 07/03/2014, 23:20

... appearing in the inset of the figure The b-curve, showing the lowest in nitesimal control coefficient in the reference state, results in greater increases in flux for moderate or high values of ri increase ... above, the parameter increase could produce, at most, a 29% in J2 and a 16% increase in J3 Therefore, increases in supply rate may produce only moderate increases in protein-forming fluxes Note that ... determined from data obtained by changing the concentration of the linking intermediate and measuring the corresponding rates of the modules (i.e from module rates versus S data) Changes in the intermediate...

Ngày tải lên: 14/03/2014, 23:20

... level in T and T+l, while in T+2 it is above that level In contrast, real credit slows down substantially beginning in the crisis year, with the growth rate declining by nine percentage points in ... evidenceof increaseddepositinterest rates A plausibleinterpretation these findingsis that bank safetynets have succeededin of keeping depositorsfrom fleeingdespitewidespreadinsolvencyin the bankingsystem ... period used in the macro analysis The resulting sampleincludes 16 bankingcrises (listed in AppendixI) all occurringin developingcountriesor transition economies.Four of the crises 15We include banks...

Ngày tải lên: 15/03/2014, 14:20

... engineers, trying to solve power engineering problems using intelligent systems and signal processing, or seeking applications of intelligent systems and signal processing in power engineering ... inter-disciplinary applications in power engineering, demonstrating how to apply intelligent systems and signal processing techniques in power engineering applications However, ample power engineering ... 0.1 0 min(1, 0.1) min(0.6, 0.1) min(0.3, 0.1) min(0.1, 0.1) min(0, 0.1) min(0, 0.1) min(1, 0.3) min(0.6, 0.3) min(0.3, 0.3) min(0.1, 0.3) min(0, 0.3) min(0, 0.3) min(1, 0.6) min(0.6, 0.6) min(0.3,...

Ngày tải lên: 17/03/2014, 18:21

... (13.0 %) subsystems The GSM subsystem power clearly dominates while suspended, consuming approximately 45 % of the overall power Despite maintaining full state, RAM consumes negligible power less ... RAM power can exceed CPU power in certain workloads, but in practical situations, CPU power overshadows RAM by a factor of two or more Audio displayed a largely static power consumption in the ... Total system power consumption was measured at this point by inserting a sense resistor between the supply and the phone For the G1 and N1 we measured total system power by inserting a sense resistor...

Ngày tải lên: 23/03/2014, 13:20

... available power system optimization packages contain powerful linear programming algorithms for solving power system problems for both planning and operating engineers Linear programming has extensions ... immense interest in the engineering field in the last two decades Optimization methods are of great importance in practice, particularly in engineering design, scientific experiments, and business ... approximating the original problem using Taylor series expansion at the current operating point and then moving in an optimal direction until the solution converges Mixed integer programming is an integer...

Ngày tải lên: 30/03/2014, 07:20

... in main memory instead of residing primarily on disk (e.g [20]) Years ago, main memory capacity was the factor limiting the appeal of main memory DBMSs In high-end systems today, however, main ... which the systems are built has increased Hardware redundancy techniques have gone a long way in detecting and masking faults when those hardware components wear out The increasingly CHAPTER INTRODUCTION ... errors Error checking is not usually done systematically The checking code has to be maintained as the software it checks is maintained Implementing and testing error checkers increases development...

Ngày tải lên: 28/04/2014, 13:32

... power system stability analysis plays an important role in determining the system operating limits and operating guidelines During the planning stage, power system stability analysis is performed ... postfault power systems: a postfault stable equilibrium point must exist and the prefault stable equilibrium point must lie inside the stability region of the postfault stable equilibrium point ... the extraordinary size of the systems, (2) the nonlinearity in the systems, (3) the dynamic interactions within the systems, and (4) the complexity of component modeling These complicating factors...

Ngày tải lên: 30/05/2014, 23:38

... one RS-to-BS link Therefore, there are total 2N + links in this system, i.e., one MS-to-BS link, N MS-toRS links, and N RS-to-BS links Assume all the link gains undergo mutually independent non-identical ... 710071, China 3Computer Science and Engineering Department, Hong Kong University of Science and Technology, Jiulong, Hongkong 999077, China College of Electronic and Information Engineering, Nanjing ... Nanjing 210016, China 5National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China Competing interests The authors declare that they have no competing interests...

Ngày tải lên: 21/06/2014, 02:20

... management in embedded systems, ” Computing & Control Engineering, vol 14, no 5, pp 36–40, 2003 E.-Y Chung, L Benini, and G de Micheli, “Dynamic power management using adaptive learning tree,” in Proceedings ... methodology aiming at controlling performance and power levels of digital circuits and embedded systems, with the goal of extending the autonomous operation time of battery-powered systems In this work, ... using the evolved hardware in FPGA It concludes that Temporal Difference Reinforcement Learning is an effective scheme as the power saving is appreciable REFERENCES Table 2: Energy savings using...

Ngày tải lên: 22/06/2014, 19:20

... electrical engineering from Tsinghua University, Beijing, China, in 1996 and 1998, respectively, and the Ph.D degree in electrical engineering from Princeton University, Princeton, NJ, in 2002 He ... Beijing, China, in 1998, the M.S degree from Tsinghua University, Beijing, China, in 2001, and the Ph.D degree from North Carolina State University, Raleigh, NC, in 2006, all in electrical engineering ... reveal the interaction between these two forms of diversity Aiming at obtaining succinct and insightful performance evaluation for MIMO MRT/MRC systems (more general MIMO diversity systems) , we...

Ngày tải lên: 22/06/2014, 22:20