electric power generation conventional methods

... CRC Press LLC Electric Power Generation: Conventional Methods Steven R Brockschink 2.1 Pacific Engineering Corporation James H Gurney Hydroelectric Power Generation Planning of Hydroelectric Facilities ... 2 Electric Power Generation: Conventional Methods Rama Ramakumar Oklahoma State University 2.1 Hydroelectric Power Generation Steven R Brockschink, James ... Synchronous motors convert electrical power to mechanical power; synchronous generators convert mechanical power to electrical power; and synchronous condensers supply only reactive power to stabilize...

Ngày tải lên: 05/03/2014, 16:20

... 1 Electric Power Generation: Non -Conventional Methods Saifur Rahman Virginia Tech 1.1 Wind Power Gary L Johnson 1.2 Advanced Energy Technologies ... LLC Electric Power Generation: Non -Conventional Methods Gary L Johnson Kansas State University Saifur Rahman 1.1 Virginia Tech 1.2 Roger A Messenger 1.3 Florida Atlantic University 1.1 Wind Power ... chemical energy in a fuel to electricity With the efficiencies approaching 60%, even without co -generation, fuel cell power plants are nearly twice as efficient as conventional power plants Unlike large...

Ngày tải lên: 05/03/2014, 16:20

... of the initial investment 10 Guide to Electric Power Generation This page intentionally left blank Electric Power Generation 11 Chapter Electric Power Generation ENERGY CONVERSION P ower generating ... Guide to electric power generation/ A.J Pansini, K.D Smalling. 3rd ed p cm Includes index ISBN 0-88173-524-8 (print) ISBN 0-88173-525-6 (electronic) Electric power production Electric power plants ... to a boiler producing steam to power a steam tur- Electric Power Generation 29 Figure 2-6 Combined Cycle Unit (Courtesy Exxon The Lamp) 30 Guide to Electric Power Generation Table 2-5 Comparison...

Ngày tải lên: 03/01/2014, 22:44

... Protection 1-1 1.3 Special Considerations 1-5 John Appleyard S&C Electric Company Electrical British Columbia Hydro & Power Authority 1.4 Thermal Special Applications 1-7 Shunt Reactors ... characteristic 1.2.2 Mechanical There are two generally accepted methods used to detect transformer faults using mechanical methods These detection methods provide sensitive fault detection and compliment ... John Wiley & Sons, New York, 1996 IEEE Guide for Diagnostic Field Testing of Electric Power Apparatus—Part 1: Oil Filled Power Transformers, Regulators, and Reactors, ANSI=IEEE Std 62-199S Guide...

Ngày tải lên: 21/03/2014, 12:08

... tail-race level, the motoring energy is high If above, the reverse power gets as low as 0.2 to 2% of the rated power and a sensitive reverse power relay is then needed With steam turbines operating at ... monitor the flow of real power into the generator If that flow becomes negative below a preset level, then a motoring condition is detected Sensitivity and setting of the power relay depends upon ... the field normally excited The power system will then drive the generator as a motor A motoring condition may develop if a generator is connected improperly to the power system This will happen...

Ngày tải lên: 21/03/2014, 12:08

... between the relay location and the fault location As the power systems become more complex and the fault current varies with changes in generation and system configuration, directional overcurrent ... details that are imposed by this choice Power line carrier uses the protected line itself as the channel, superimposing a high frequency signal on top of the 60 Hz power frequency Since the line being ... external to it Since the power line itself is used as the communication medium, a blocking signal is used 3.4.2 Transfer Tripping If the communication channel is independent of the power line, a tripping...

Ngày tải lên: 21/03/2014, 12:08

... is a consequence of the power deficiency, the rate of change of frequency is an instantaneous indicator of power deficiency and can enable incipient recognition of the power imbalance However, ... process of power system cascading may start, leading to power system separation When a power system separates, islands with an imbalance between generation and load are formed One consequence of the ... is a final result of the power deficiency, the rate of change of frequency is an instantaneous indicator of power deficiency and can enable incipient recognition of the power imbalance However,...

Ngày tải lên: 21/03/2014, 12:08

... distribution feeders, IEEE Trans on Power Delivery, 5, 905, Apr 1990 Gail, A.W and Nielsen, O.M., Wavelet analysis for power system transients, IEEE Computer Applications in Power, 12, 16, January 1999 ... in quasi-steady state All power generators generate positive sequence voltages, and all machines work best when energized by positive sequence currents and voltages The power system is specifically ... measurements Phasors, representing voltages and currents at various buses in a power system, define the state of the power system If several phasors are to be measured, it is essential that they...

Ngày tải lên: 21/03/2014, 12:08

Ngày tải lên: 21/03/2014, 12:08

... problem has been one of maintaining synchronous operation Since power systems rely on synchronous machines for generation of electrical power, a necessary condition for satisfactory system operation ... and power system control technology A review of the history of the subject is useful for a better understanding of the electric power industry’s practices with regard to system stability Power ... Trans on Power Systems, 8, 3, 1159, 1993 Morison, G.K., Wang, L., and Kundur, P., Power System Security Assessment, IEEE Power & Energy Magazine, September=October 2004 Steinmetz, C.P., Power control...

Ngày tải lên: 21/03/2014, 12:08

... maximum power Figure 8.3 shows that for a given input power to the generator Pm1, the electrical output power is Pe (equal to Pm) and the corresponding rotor angle is da As the mechanical power ... differential equations A variety of numerical integration methods are used, including explicit methods (such as Euler and Runge–Kutta methods) and implicit methods (such as the trapezoidal method) The selection ... model) It is well known that there is a maximum power that can be transmitted to the infinite bus in such a network The relationship between the electrical power of the generator Pe and the rotor angle...

Ngày tải lên: 21/03/2014, 12:08

... to use nearly every line for power transfer This will certainly decrease reliability and may decrease damping, depending on the location of added generation 9.1.2 Power System Oscillations Classified ... electromechanical oscillations that affect interarea power flows 9.1.3 Conceptual Description of Power System Oscillations As illustrated in the previous subsection, power systems contain many modes of oscillation ... are identified using eigenvectors (Kundur, 1994) Conventional eigenvalue computation methods are limited to systems up to about 800 states Such methods are ideally suited for detailed analysis...

Ngày tải lên: 21/03/2014, 12:08

... bifurcation is defined in a power flow model of the nonlinear power grid as a point at which two power flow solutions merge as the load is increased; the Jacobian of the power flow equations at this ... Italian power system, Electric Power Systems Research, 73, 67–76, 2005 Gao, B., Morison, G.K., and Kundur, P., Voltage stability evaluation using modal analysis, IEEE Transactions on Power Systems, ... receiving end is varied at a constant power factor and the receiving end voltage is calculated Each curve is calculated at a specific power factor and shows the maximum power that can be transferred at...

Ngày tải lên: 21/03/2014, 12:08

... Russia) Criteria of Stability of Electric Power Systems Electric Technology and Electric Power Series, Moscow, 1971 (in Russian) Anderson, P.M., and Fouad, A.A., Power System Control and Stability, ... of electric power systems, Paper No PE-349, IEEE Power Engineering Society Summer Power Meeting, San Diego, CA, July 1998 Chiang, H.-D., Wu, F.F., and Varaiya, P.P., Foundations of the direct methods ... International Journal of Electric Power and Energy Systems, 10, 4, 233–246, October 1988 Gless, G.E., Direct method of Liapunov applied to transient power system stability, IEEE Trans Power Appar Syst.,...

Ngày tải lên: 21/03/2014, 12:08

... mechanical power characteristic and the electrical power characteristic Normal stable operation is at d0 For example, a small increase in mechanical power input causes an accelerating power that ... causes electric power and torque to be zero, with accelerating torque equal to Tm (Although generator current is very high for the short circuit, the power factor, and active current and active power ... Francis Group, LLC electrical power can be resolved into a component in-phase with angle (synchronizing power) and a component in quadrature (908 leading) in-phase with speed (damping power) Controls,...

Ngày tải lên: 21/03/2014, 12:08

... (RPM)2 MW-s=MVA MVA rating Sometimes, the mechanical power and electrical power are used in this model instead of the corresponding torques Since power equals torque multiplied by rotor speed, the ... system models for power system stability studies, 1992 Kazachkov, Y.A., Feltes, J.W., Zavadil, R., Modeling wind farms for power system stability studies, Proceedings of the Power Engineering ... for Power) , 105(1), October 1983, 865–869 Standard load models for power flow and dynamic performance simulation, IEEE Transactions, PWRS10, August 1995, Static Var compensator models for power...

Ngày tải lên: 21/03/2014, 12:08

... performance Data generation environments Operational environments Planning environments Tools and practices Real-time operations Information Methods development Power system monitors (PSMs) Power system ... operator North American Electric Reliability Council Western Electricity Coordinating Council Western Systems Coordinating Council (predecessor to WECC) American Electric Power Company Arizona ... Transactions on Power Delivery, 11, July 1996, pp 1224–1231 37 PC37.118=D7.3 Draft Standards for Synchrophasors for Power Systems, recommended by the Power System Relaying Committee of the IEEE Power Engineering...

Ngày tải lên: 21/03/2014, 12:08

... the security of operating electric power system using probability methods, Proceedings of IEEE, 62(7), July 1974 Pavella, M and Murthy, P.G., Transient Stability of Power Sytems: Theory and Practice, ... Ribbens-Pavella M and Evans, F.J., Direct methods for studying dynamics of large-scale electric power systems—A survey, Automatica, 21(1), 1–21, 1985 Sauer, P.W and Pai, M.A., Power System Dynamics and Stability, ... neural net based dynamic security assessment for electric power systems, IEEE Transactions on Power Systems, 4(1), 220–228, February 1989 Taylor, C.W., Power System Voltage Stability, McGraw-Hill,...

Ngày tải lên: 21/03/2014, 12:08

... extensive turbine-generator damage from power system dynamic interaction For these reasons, methods have been developed to identify and analyze the potential for power system dynamic interaction and ... presented in Ref [3] Subsynchronous: Electrical or mechanical quantities associated with frequencies below the synchronous frequency of a power system Supersynchronous: Electrical or mechanical quantities ... effect since they can be analyzed by linear methods [1] The approach follows: Model the power system by its positive sequence model Model the generator electrical circuits Model the turbine-generator...

Ngày tải lên: 21/03/2014, 12:08