Considering the trend of simultaneous existenceof electricity market and ancillary services market,thispaper proposes an integrated bidding model of electricenergy with ancillary service, and presents a solvingmethod ...
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Considering the trend of simultaneous existenceof electricity market and ancillary services market,thispaper proposes an integrated bidding model of electricenergy with ancillary service, and presents a solvingmethod based on network flow programming method. Thepricing of ancillary service and distribution scheme is thendetermined. A practical software for daily trading planconsidering spinning reserve in power market has beendeveloped. Some typical examples are tested and *** comparison results between the proposed approachand separated bidding method show that both proposedmodel and solution are correct and effective.
The research on open complex giant system hasbeen done in this paper, in which brittleness as one of thebasic characteristics is presented on the basis of the traitsof its collapse. Analysis on the small sample events...
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The research on open complex giant system hasbeen done in this paper, in which brittleness as one of thebasic characteristics is presented on the basis of the traitsof its collapse. Analysis on the small sample events havebeen carried out about the system under the disturbancefrom the inside and outside based on information diffusiontheory considering that the system has the ***, brittle potential function has been inducedapplying the distribution function of random depending oncatastrophe theory after the collectivity probability densityhas been got. Finally, brittleness link function is defined,which can serve the further quantitative research onoptimizing open complex giant system.
Computer simulation of electric motor operation isparticularly useful for gaining an insight into their dynamicbehaviour and electro-mechanical interaction. A suitable modelenables motor faults to be simulated and the...
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Computer simulation of electric motor operation isparticularly useful for gaining an insight into their dynamicbehaviour and electro-mechanical interaction. A suitable modelenables motor faults to be simulated and the change incorresponding parameters to be predicted without physicalexperimentation. This paper presents both a theoretical andexperimental analysis of asymmetric stator and rotor faults ininduction machines. A three-phase induction motor was simulatedand operated under normal health operation, with one brokenrotor bar and with voltage imbalances on one phase of supply. Theresults illustrate good agreement between both simulated andexperimental results.
An effective Hopfield neural network(HNN)approach to multiprocessor job scheduling problem (known tobe a NP-hard problem) is proposed in this paper, which is aptto resource and timing (execution time and deadline)cons...
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An effective Hopfield neural network(HNN)approach to multiprocessor job scheduling problem (known tobe a NP-hard problem) is proposed in this paper, which is aptto resource and timing (execution time and deadline)constraints. This approach directly formulates the energyfunction of HNN according to constraints term by term andmore derives HNN model, then embeds simulated annealinginto HNN to prevent local minimum. Simulation resultsdemonstrate that the derived energy function works effectivelyfor this class of problems.
In this paper, a kind of variable-voltage direct torquecontrol (DTC) method for permanent magnet synchronousmotor (PMSM) drive system is proposed. 24 or more voltagrvectors with variable voltage on cirole traces are o...
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In this paper, a kind of variable-voltage direct torquecontrol (DTC) method for permanent magnet synchronousmotor (PMSM) drive system is proposed. 24 or more voltagrvectors with variable voltage on cirole traces are obtained. Anew switch table is used to select voltage vectors effectively Bytheory analysis and simulation rescarch, the proposed controlmethod is proved to enable diminishing the torque ripple,especially in low speed range. In the preliminary experiment,both smootb control of speed and high dynamic performance areachieved.
It is necessary to provide priority-based datatransfer on HFC networks. In this paper, we propose ascheme that can support priority-based bandwidthcontention. The scheme is easy to realize. In addition, theoverhead in...
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It is necessary to provide priority-based datatransfer on HFC networks. In this paper, we propose ascheme that can support priority-based bandwidthcontention. The scheme is easy to realize. In addition, theoverhead in the headend is extremely low. We usesimulation to verify that the scheme we proposed canindeed make high-priority bandwidth requests havegreater possibility to succeed than low-priority bandwidthrequests.
This paper presents design considerations for aFast Response Voltage Regulator Module (VRM) for theworldwide-used microprocessors. The increasing steadystate and dynamic requirements are very hard to meet withconventi...
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This paper presents design considerations for aFast Response Voltage Regulator Module (VRM) for theworldwide-used microprocessors. The increasing steadystate and dynamic requirements are very hard to meet withconventional design techniques due to parasitic elementsof the circuit. To overcome the drawback withconventional design, a new topology of inductor switchingtechnique is proposed. The design, simulation andexperimental results are presented to verify the proposedtopology.
Better compression results can be achieved bycoding vectors instead of scalars, Proposed algorithm isused for competitive learning of Vector QuantizationNeural Network, which is used to generate a codebookfor the Vect...
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Better compression results can be achieved bycoding vectors instead of scalars, Proposed algorithm isused for competitive learning of Vector QuantizationNeural Network, which is used to generate a codebookfor the Vector Quantization of ECG signal. TheCompetitive Learning Algorithm can successfully groupthe sample group to generate codebook and reproduce atthe time of reconstruction.
There is a lot of multimedia data types, related compressalgorithms and related code standards that have differentcharactenistics and adapt to different application *** the characteristics of multimedia dynamically is...
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There is a lot of multimedia data types, related compressalgorithms and related code standards that have differentcharactenistics and adapt to different application *** the characteristics of multimedia dynamically is helpful forclearly understanding and properly using the media data. Theobjective of this research is to develop a network multimediaevaluation platform based on the client/server mode, by means ofanalyzing and comparing the feathers of main media (the series ofMPEG. ITU-H, ITU-G, JPEG, etc) compression algorithm. Theplatform, MATEP, can test and display main parameters of relatedmultimedia data. These parameters can be used in QoS control.
This paper proposes an agent-based cooperativeprotection system, which could adapt protection funtions tothe complicated changes in the power system automatically andintel1igently. In the cooperative protection system...
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This paper proposes an agent-based cooperativeprotection system, which could adapt protection funtions tothe complicated changes in the power system automatically andintel1igently. In the cooperative protection system, multi-agentsystem allows the cooperation between plural numbers ofequipments. The cooperation of multi-agent enables the flexibleutilization of all hardware resources by any equipmen, so thatvarious adaptive protection functions are realized. Simulationof the proposed method has been applied to some typicalprotection function, i.e. overcurrent protection function.
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