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Showing 1 to 20 of 86 for “"transient stability"”.
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Validation of power system transient stability results
Simulation of the transient stability problem of a power system, which is the assessment of the short term angular and voltage stability of the system following a disturbance, is of vital importance. It is widely known in the industry that different transient stability packages can give …
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POWER SYSTEM TRANSIENT STABILITY CONTROL WITH CONSIDERATION OF UNCERTAINTIES
Stability of power system ensures continuous and uninterrupted power delivery from generation to demands and measures the dynamic behaviour of different system characteristics subject to disturbances. Failure to maintain stability can lead to consequences ranging from disconnected buses and areas …
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Transient Stability Analysis of Power Systems with Energy Storage
… thesis addresses some problems in power system stability with and without energy storage.A power system model with energy storage is used to analyze the influence of three-phase faults on the transient stability of the systems using simulation to determine the Critical Clearing Time (CCT) using …
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Reduced order power system models for transient stability studies
… stable by performing a better then real-time transient stability study. Because of the computing capacity required for a transient stability study, the study cannot be performed on the full power system. A reduced model must be used. In this thesis, various methods of obtaining reduced models …
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A Practical Method for Power Systems Transient Stability and Security
<p>Stability analysis methods may be categorized by two major stability analysis methods: small-signal stability and transient stability analyses. Transient stability methods are further categorized into two major categories: numerical methods based on numerical integration, and direct methods. The …
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Real-time validation of power system transient stability simulation results
Performing transient stability study using simulation software is crucial to determining the threshold amount of disturbance a system can handle before losing synchronism. These disturbances include events such as loss of generation, loss of a large load, or fault on transmission facilities. …
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Impact of stochastic loads and generations on power system transient stability
… The traditional approach to power system stability studies is based on a deterministic transient energy function. However, such a deterministic analysis does not provide a realistic evaluation of system transient performance where the intermittency and variability of energy production …
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Modelling of induction motors for system faults and transient stability studies
… the effects of large induction motors and their transient performance in power systems. Computer packages using the three phase co-ordinate frame of reference were developed to simulate the induction motor transient performance. A technique using matrix algebra was developed to allow extension of …
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Automation tools for the verification and validation of transient stability models
… or overutilization of the grid. Various transient stability software packages are widely used for dynamic analyses to help make key decisions in the planning, design, and operation of the power grid. Prior work and software documentation has shown that software packages implement the same …
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Transient stability assessment of hybrid distributed generation using computational intelligence approaches
… real time/online monitoring and prediction of stability limit is needed to prevent future blackouts. In the last decade, Distributed Generators (DGs) among other technologies have received increasing attention. This is because DGs have the capability to meet peak demand, reduce losses, due to …
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The impact of wind generators on a Powe system's transient stability
… wind generators and how these would affect the transient stability of a hypothetical power network as presented in this report. Focus was on the transient responses of the conventional synchronous generator’s rotor angle and terminal voltage when connected to different types of wind generators. …
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Investigation into transient stability of a nuclear power plant using DIgSILENT
… plays a significant role in ensuring the stability of the Western Cape's electricity network. Without this power stattion, the network power flow is greatly affected, and is placed under severe strain. Koeberg is the determining factor when the system operators control the Western Cape …
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Transient Stability Prediction based on Synchronized Phasor Measurements and Controlled Islanding
Traditional methods for predicting transient stability of power systems such as the direct method, the time domain approach, and the energy function methods do not work well for online transient stability predictions problems. With the advent of Phasor Measurement Units (PMUs) in power systems, it …
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Power system transient stability analysis of stiff systems using the Multirate method
Power system transient stability studies are complex and can take a substantial amount of time to simulate. The Multirate integration method is one way to speed up simulation studies. This thesis studies the effects of using a type of Multirate simulation method in a software package. In this …
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Power System Transient Stability Analysis Considering Load And Wind Power Generation Variability
This research investigated the transient stability of a power system that integrated wind power generators (WPGs) by considering the variability of the system load and power they produced. The power produced by the WPGs was modelled using wind speed, while the variability of the power system load …
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A comparison of numerical algorithms for solution of the transient stability problem
… of the differential equations contained in the transient stability problem. A classical transient stability model is used, including the swing equation to characterize the machine's dynamic behavior. The five algorithms studied are: fourth-order Runge-Kutta; state transition; the trapezoidal …
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Theoretical foundations for finite-time transient stability and sensitivity analysis of power systems
<p>Transient stability and sensitivity analysis of power systems are problems of enormous academic and practical interest. These classical problems have received renewed interest, because of the advancement in sensor technology in the form of phasor measurement units (PMUs). The advancement in …
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Assessment of direct methods in power system transient stability analysis for on-line applications
… allows the problem of real time prediction of instability and control to be considered. The use of direct methods for these on-line applications is assessed. The classical representation of a power system allows the use of two reference frames: Center of angle and one machine as reference. …
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Power system analysis criteria-based computational efficiency enhancement for power flow and transient stability
Made available in DSpace on 2014-09-16T17:25:26Z (GMT). No. of bitstreams: 3 Soobae_Kim.pdf: 1313745 bytes, checksum: 0e6d8a9709a7222ca3471ebd545cb314 (MD5) Kim_Soobae.tex: 136779 bytes, checksum: 931c9b852258f804300a3ebc5fd336bb (MD5) license.txt: 4058 bytes, checksum: …
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Studying the Impact of Solar Photovoltaic on Transient Stability of Power Systems using Direct Methods
… one of the major ones is the impact on the transient stability of the grid. On the other hand, the direct methods for transient stability assessment of power systems have also fairly evolved over the past 30 years. These set of techniques inspired from the Lyapunov's direct method provide a …
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