Banca de DEFESA: ADRIANA CAVALCANTE MARQUES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : ADRIANA CAVALCANTE MARQUES
DATA : 27/06/2016
HORA: 14:00
LOCAL: Sala D1A - Setor IV
TÍTULO:

A revision of the tarification in the Brazilian electrical system based on the application of the network data envolpment analysis model.

PALAVRAS-CHAVES:

Data envelopment analysis. Brazilian electric sector. Tariff. Efficiency.

Tariff Adjustments. Supply Chain.

PÁGINAS: 113
GRANDE ÁREA: Engenharias
ÁREA: Engenharia de Produção
SUBÁREA: Pesquisa Operacional
ESPECIALIDADE: Programação Linear, Não-Linear, Mista e Dinâmica
RESUMO:

The Brazilian electricity sector has shown different changes, since unbundling of

companies to the creation of the regulatory agency (Aneel - National Electric Energy

Agency), responsible for the economic regulation of the transmission and distribution

segments. However, Aneel apply charging policies separately between the segments that

make up the electrical system, not considering the relationship in the supply chain. In

this context, this paper aims to propose a new model of the Brazilian electric system

efficiency analysis in order to make the best-adjusted tariff review with the system

reality. The segments of the industry (generation, transmission and distribution) were

founded through a set of recurring variables in the literature to portray the processes

carried out in the electrical system at the national and international levels. The

conceptual model includes initially 12 variables divided into three dimensions: cost,

productivity and quality. The sample includes 94 companies, that consists in 16

generation companies, 28 electricity transmission companies and 50 distribution

companies. The Decision Making Units (DMU) were considered the paths starting in

generation to distribution, so that the sample totaled in 362 DMU's. In conducting the

research analysis, was developed a model to evaluate the electrical system using the

data envelopment analysis (DEA) to quantitatively identify the network efficiency level.

To be able to represent the complexity of the electrical system, a unique grouping model

was proposed and analyzed by Network DEA's model (NDEA) in three stages, each

simulating segments of the industry, for identifying the impacts between the processes

and causes of inefficiency. These stages of the network were evaluated for verify the

performance of the companies in each segment and validate the model of constant

returns to scale, through the classic models CCR compared to the NDRS used by Aneel.

From this comparison between the classic models, it has validated the use of constant

returns to scale model for sector analysis. The results of the NDEA model point to the

adequacy of the proposed method by performing the electrical system aggregate

analysis, by presenting more discriminatory results than classic models. Furthermore,

obtained that no path of the network has the three constituent companies efficient in its

entirety. However, it was possible to identify which links those companies should focus

their investments to achieve better performance and which networks are its benchmarks,

contributing to the management decision-making and the efficient planning of

companies. Finally, we identified the exogenous factors that influence efficiency, such

as geography and size, and then it is possible to obtain a more appropriate tariffing as

the reality of the sector, both benefiting consumers, as companies and government.

MEMBROS DA BANCA:
Presidente - 1746084 - DANIEL ALOISE
Interno - 1777131 - MARIANA RODRIGUES DE ALMEIDA
Externo ao Programa - 346287 - MANOEL FIRMINO DE MEDEIROS JUNIOR
Externo à Instituição - ADIEL TEIXEIRA DE ALMEIDA FILHO - UFPE