Cálculo de perdas técnicas em sistemas de distribuição - modelos adequáveis às características do sistema e à disponibilidade de informações. / Technical losses estimation in distribution systems - adaptative models to the system characteristics and availability of information.

AUTOR(ES)

André Méffe

DATA DE PUBLICAÇÃO

2006

RESUMO

This work aims at presenting and discussing some models for calculating technical and non-technical losses in distribution systems. The proposed methods comprise several possibilities depending on the available data. This discussion is very important since the electric sector faces new challenges, such as technical loss estimation in low voltage networks with incomplete data. The evaluation of non-technical losses is also herein discussed. Regarding loss estimation with incomplete data, two conditions are considered. In the first one, the network data is known, but the customers location are unavailable. In the second one, the network data is not completely known as well. In this latter condition, in order to overcome the lack of sufficient data, classification techniques are used to establish a set of typical network patterns and to associate each network to a previously established pattern. Some load distribution models are also used and the uncertainties are considered by the use of fuzzy sets. In order to estimate the non-technical losses and their related technical losses, a method to adjust the billed energy in all customers is proposed. This is accomplished by using the computed technical losses and the measured energy at the substation site. This method also makes possible the assessment of technical losses in a quick way with a low computational effort (fast method). Such method is accomplished by using the results of a calculation previously performed using the conventional method. All the proposed methods are applied to real distribution networks. The obtained results are discussed and compared to the results obtained with the conventional method. The applicability of each model is also discussed.

ASSUNTO(S)

energias não faturadas perdas não técnicas energy losses perdas de energia classification techniques technical losses typical low voltage network patterns técnicas de classificação energy not billed non-technical losses padrões de redes de baixa tensão perdas técnicas

Documentos Relacionados

• Estimação e análise das perdas técnicas na distribuição de energia elétrica
• Methodology for calculation of technical losses in each segment of the distibution system.
• Desenvolvimento de metodologia para cálculo de perdas elétricas em redes de distribuição de baixa tensão
• Estimador de estado inteligente para análise de perdas em sistemas de distribuição de energia.
• USE OF INFORMATION SYSTEMS GEOGRAPHICAL SYSTEMS IN OPERATION SUPPLY