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| Author(s): |
Paulo César Magalhães Meira
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | Campinas, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Elétrica e de Computação |
| Defense date: | 2014-06-26 |
| Examining board members: |
Walmir de Freitas Filho;
Carmen Lucia Tancredo Borges;
Delberis Araujo Lima;
Rubén Romero;
Madson Cortes de Almeida
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| Advisor: | Walmir de Freitas Filho |
| Abstract | |
The fault elimination policy used by an electric energy distribution utility has great impact on the reliability and in the power quality of the system. For example, the policy of using automatic reclosers typically has a positive impact in the reliability indices based on frequency and duration of sustained interruptions but, on the other hand, has a negative impact on the power quality indices based on the frequency of temporary interruptions. This can be verified by the number of utilities around the world that are reevaluating their policies in using automatic reclosers in a generalized fashion as the customers demand better power quality. At the same time, the systems are being modernized, including the usage of more monitoring and automation equipment, such as automatic sectionalizing switches, digital relays, etc., in a context that is usually called smart grids. Therefore, currently, the policies regarding fault elimination and improvement of the reliability and power quality indices in distribution system are being reformulated and have attracted the interest of the academic and technology communities. The objective of this thesis is to develop methods to assist in the decision-making process on the fault elimination policies in distribution systems using the integrated evaluation of reliability and power quality indices. The methods are based on the use of historical records and utility measurements, in the computation of reliability and power quality indices, in optimization techniques and statistical analysis. To achieve the implementation of the methods in actual systems, the classic algorithms used to analyze the reliability and power quality are revisited and reformulated in order to allow their application to large-scale systems in feasible running time. Alternatives to allow the parallel and distributed execution of the main algorithms of the proposed methods are also explored (AU) | |
| FAPESP's process: | 10/05236-4 - A Framework for Determination of the Fault-Clearing Practice in Power Distribution System from Power Quality and Reliability Perspectives |
| Grantee: | Paulo César Magalhães Meira |
| Support Opportunities: | Scholarships in Brazil - Doctorate |