Download or read book Dynamic Load Modeling in Power System Analysis written by Joseph Roger Gracia and published by . This book was released on 1977 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Impact of Large scale Dynamic Load Modeling on the U S Eastern Interconnection written by Melanie Theresa Bennett and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this thesis is to introduce widespread dynamic load models to the United States Eastern Interconnection 2030 power grid model to help improve its accuracy and capabilities. Currently, all loads in the system are represented by static load models that are unable to capture load phenomenon associated with induction motors. Chapter 1 will provide a general introduction to load modeling by discussing popular static and dynamic load models available. This chapter will also introduce the simulation test case used in Chapter 2 to Chapter 4. In Chapter 2, the complex load model parameters are developed and applied to 28,500 loads in the Eastern Interconnection model and the impact to frequency response is discussed. Buses with large differences in frequency nadir when static or dynamic load models are applied to the system and a bus with a representative response are presented for reference. Snapshots from a movie illustrate the frequency map distribution for the Eastern Interconnection. Chapter 3 is a sensitivity study of the complex load model for certain parameters. The induction motor, constant power, discharge lighting, and static load components of the complex load model are studied. The study metrics are the frequency nadir, settling frequency, and rate of change of frequency for the system average response and a single bus. Chapter 4 validates the developed model for real events recorded by the FNET/Grideye system. The accuracy of the dynamic load model is compared to the current static load model. Chapter 5 discusses the process to develop load models for a utility in the Eastern Interconnection using a bottom-up approach. The developed models are studied for several cases and validated.
Download or read book Dynamic Load Modeling written by John F. McCoy and published by . This book was released on 1992 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Power System Dynamic Load Modeling written by James Richard Hockenberry and published by . This book was released on 1997 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Load Modeling for Power System Transient Stability Studies written by Bih-Yuan Ku and published by . This book was released on 1993 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Conference on Innovative Computing and Communications written by Deepak Gupta and published by Springer Nature. This book was released on 2020-07-30 with total page 1182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book includes high-quality research papers presented at the Third International Conference on Innovative Computing and Communication (ICICC 2020), which is held at the Shaheed Sukhdev College of Business Studies, University of Delhi, Delhi, India, on 21–23 February, 2020. Introducing the innovative works of scientists, professors, research scholars, students and industrial experts in the field of computing and communication, the book promotes the transformation of fundamental research into institutional and industrialized research and the conversion of applied exploration into real-time applications.
Download or read book Optimization of Power System Problems written by Mahmoud Pesaran Hajiabbas and published by Springer Nature. This book was released on 2020-01-06 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents integrated optimization methods and algorithms for power system problems along with their codes in MATLAB. Providing a reliable and secure power and energy system is one of the main challenges of the new era. Due to the nonlinear multi-objective nature of these problems, the traditional methods are not suitable approaches for solving large-scale power system operation dilemmas. The integration of optimization algorithms into power systems has been discussed in several textbooks, but this is the first to include the integration methods and the developed codes. As such, it is a useful resource for undergraduate and graduate students, researchers and engineers trying to solve power and energy optimization problems using modern technical and intelligent systems based on theory and application case studies. It is expected that readers have a basic mathematical background.
Download or read book Dynamic Load Models for Industrial Facilities written by Xiaodong Liang and published by . This book was released on 2013 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Industrial facilities connected to power transmission systems typically draw large amount of power and have complex dynamic responses to system disturbances. Traditional load modeling approaches cannot establish adequate dynamic models especially for future industrial facilities in power systems planning studies. In this thesis, a new concept, the template-based load modeling technique along with template scaling and model equivalence algorithms, is proposed to address this issue. This method requires minimal user input and can be implemented in a database program for a wide variety of industrial facilities. Oil refinery facilities are used as an example to illustrate the proposed technique. Variable frequency drives (VFDs) are increasingly used in industrial facilities, however, dynamic models for motor drive systems suitable for power systems dynamic studies are not available. Voltage sags occur when power systems experience short-circuit faults, which is typically the starting point of power systems dynamic simulation. VFDs will trip when they experience a relatively large voltage sag (>20% - 30% voltage drop). As a result, there is no need to include VFDs in dynamic studies. Based on the finding, a simple procedure to determine if a VFD needs to be included for dynamic studies is proposed in this thesis. When VFDs experience mild voltage disturbances and are able to ride through, the equivalent dynamic model for motor drive systems is proposed. These models are created by the linearization approach, voltage dependence and frequency dependence are both considered. Dynamic models for VSI and cascaded inverter drives and their induction motor loads are developed. Aggregation algorithms for motor drive systems are proposed to achieve load equivalence facility wide. A generic dynamic load model structure covering all types of commonly used loads including motor drive systems is proposed for industrial facilities. A procedure is provided on how to obtain the final load model, which is tailored from the generic structure based on load types practically involved in an industrial facility of interest.
Download or read book Dynamic Loading and Design of Structures written by Andreas Kappos and published by CRC Press. This book was released on 2001-10-11 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until now, information on the dynamic loading of structures has been widely scattered. No other book has examined the different types of loading in a comprehensive and systematic manner, and looked at their signficance in the design process. The book begins with a survey of the probabilistic background to all forms of loads, which is particularly important to dynamic loads, and then looks at the main types in turn: wind, earthquake, wave, blast and impact loading. The relevant code provisions (Eurocode and UBC American) are detailed and a number of examples are used to illustrate the principles. A final section covers the analysis for dynamic loading, drawing out the concepts underlying the treatment of all dynamic loads, and the corresponding modelling techniques. Throughout there is a focus on the modelling of structures, rather than on classical structural dynamics.
Download or read book Dynamic load model study for overhead transmission lines written by A S Richardson and published by . This book was released on 1977 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelling and Analysis of Reinforced Concrete Structures for Dynamic Loading written by Christian Meyer and published by Springer. This book was released on 2014-05-04 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive review of the material behavior of concrete under dynamic loads, especially impact and impuls, opens the volume. It is followed by a summary of the various analytical tools available to engineers interested in analyzing the nonlinear behavior of reinforced concrete members for dynamic load. These range from relatively simple and practice-oriented push-over analysis to sophisticated layered finite element models. Important design-related topics are discussed, with special emphasis on performance of concrete frames subjected to seismic loads. The significance of modern software systems is recognized by including extensive examples. For readers not current in dynamic analysis methods, an appendix contains a review of the mathematical methods most commonly used for such analysis.
Download or read book Artificial Neural Network Based Identification of Power System Dynamic Load Model written by Abdulaziz M. Almutairi and published by . This book was released on 2002 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Accurate power system load model is critical to obtaining quality operating point prediction and stability calculations. Artificial Neural Networks, ANNs, capability of identifying complex systems promotes applying it to power system load modeling. This research presents a methodology for the identification of power system dynamic load model using artificial neural network. The developed neural network is verified using a conventional model of an induction motor. The ANN-based identification technique was also verified using a more complex induction motor model which includes the saturation effects on inductances. Neural network simulation results are illustrated and compared with the induction motor load model response.
Download or read book Estimation of Parameters of Dynamic Load Models for Voltage Stability Studies written by Pawel Adam Regulski and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Current environmental and economic trends have forced grid operators to maximize the utilization of the existing assets, which is causing systems to be operated closer to their stability limits than ever before. This requires, among other things, better knowledge and modelling of the existing power system equipment to increase the accuracy of the assessment of current stability margins. This research investigates the possibility of improving the quality of load modeling. The thesis presents a review of the traditional methods for estimation of load model parameters and proposes to use Improved Particle Swarm Optimization. Different algorithms are tested and compared in terms of accuracy, reliability and CPU requirements using computer simulations and real-data captured in a power system. Estimation of frequency and power components has also been studied in this thesis. A review of the existing methods has been provided and the use of an Unscented Kalman Filter proposed. This nonlinear recursive algorithm has been thoroughly tested and compared against selected traditional techniques in a number of experiments involving computer-generated signals as well as measurements obtained in laboratory conditions.
Download or read book Dynamic Power System Load Modeling for Stability Studies written by Shahid H. Ahmed and published by . This book was released on 1982 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Network and Load Modeling for Power System Dynamic Analysis written by Bernard Charles Lesieutre and published by . This book was released on 1993 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Comparison of Data Driven Dynamic Load Model Identification Methods Based on Simulated and Actual PMU Data written by Chuang Qi and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Load modeling and identification are important in power system stability analysis. This thesis tests and validates a stochastic dynamic load model, which has been accepted widely in academia but has not been tested using real PMU measurements data. Besides, three different methods, namely, the least square method, unscented Kalman filter method, and the nonlinear dynamic recursive method based on the Ornstein-Uhlenbeck process are tested and compared in identifying the load model parameters using the simulated data in IEEE 39-bus system. Also, the real PMU measurements collected from the GZB, SX, and WX substations in China Southern Power Grid are used to test the load model and three identification methods. Comprehensive studies considering the window size, update weight, initial value, and time step have been carried out to illustrate and compare the accuracy and robustness of the three methods. It has been observed in numerical studies that the least square method may not always guarantee good accuracy. The unscented Kalman filter method typically provides better estimations than the dynamic recursive method if the time constant of a load is less than 5s, while the dynamic recursive method is more accurate if the time constant of a load is larger than 6s. In the tests using real PMU measurements, the unscented Kalman filter method and the dynamic recursive method provide convergent estimation results"--
Download or read book Experimental Validation Study of Dynamic Load Models for Power System Analysis written by Scott G. Casper and published by . This book was released on 1995 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
