Thesis
Data Driven Load Modeling and Application in Voltage Stability
Washington State University
Master of Science (MS), Washington State University
12/2015
Handle:
https://hdl.handle.net/2376/102340
Abstract
With increasing load demand and push towards higher efficiency and economics, power systems are operated more and more closer to security limits. Due to these factors, voltage stability has become one of the major concern in power system studies operation. The accuracy of load model is one of the issue in the existing voltage stability monitoring tools to predict the stability of the power system. Hence appropriate load models with accurately estimated load parameters can lead to improvement of voltage stability assessment and better control actions can be taken to mitigate the voltage instability. Several approaches have been developed to model the load in power systems. Most of the algorithms focus on estimating the load parameters by doing offline studies. With integration of synchrophasor and other advanced sensing technologies, there is an availability of faster measurement data from the system. These have led to development of several measurement based techniques to estimate the load parameters in power systems. This thesis addresses the various challenges faced in online estimation of load parameters driven by availability of faster measurement data. A new approach to estimate the load parameters accurately under different operating scenarios is described here. The effect of load model on voltage stability is discussed using two different approaches - model based approach and local measurement based approach. Furthermore, certain limitations of both these approaches have been described. The studies on the impact of tap changing transformers on system voltage stability are performed using load characteristics. In addition, the effect of load shedding on different types of loads is briefly discussed. Test case simulations demonstrate satisfactory results to analyze the impact of load modeling on the voltage stability.
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Details
- Title
- Data Driven Load Modeling and Application in Voltage Stability
- Creators
- Tushar
- Contributors
- Anurag K. Srivastava (Chair)Anjan Bose (Committee Member) - Washington State University, Electrical Engineering and Computer Science, School ofVaithianath Venkatasubramanian (Committee Member) - Washington State University, Electrical Engineering and Computer Science, School of
- Awarding Institution
- Washington State University
- Academic Unit
- Electrical Engineering and Computer Science, School of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; [Pullman, Washington] :
- Number of pages
- 96
- Identifiers
- 99900525020001842
- Language
- English
- Resource Type
- Thesis