Métodos para otimização dos ajustes dos reguladores de tensão e zonas de tap em sistemas de distribuição

Abstract

The new regulations in the electric sector utilities have have requested greater efficiency and quality both in terms of continuity and in conformity of the energy supplied. Electrical equipments quality, efficiency and useful life depend directly of the power quality supplied. In addition to operation of equipments, supply of energy within the limits must be appropriate for the economic development of regions attended. Considering these factors, to improve quality and ensure conformity of the voltage levels over the distribution networks, the companies are investing in improvements in the system, equipment, voltage regulators and exchange of the conductors and building of new feeders and / or substations. Nowadays due to availability of computational tools and algorithms that allow the estimation of state variables at each point of distribution feeders it is possible to evaluate and plan actions for improvement in the system with more correct. But the improvements planned for the primary network, aiming to reduce the voltage drop and make the system more robust, reflecting the voltage levels in the secondary network and therefore require simultaneous actions to enable the benefits of the study are obtained . In this context, this work objective is to develop a methodology that allows the definition of TAP's appropriate for each distribution transformer, grouping them in TAP zones, together with an algorithm that defines the settings of voltage regulators, taking into consideration not only the primary desired voltage, but also its impact on distribution transformers. This methodology can be used on power utilities for power assisting in the planning and operation of the system. The work is divided into 7 chapters dealing respectively: review, steady state voltage levels and means of control applied in distribution networks, defining the TAP zones of processors, defining the parameters of adjustment of voltage regulators, integrated assessment of the voltage regulators and TAP zones, the author's contributions and considerations on the methodology presented.