Impact of micro and mini photovoltaic generation on the long term demand of distribution systems

Author(s)

José Carlos Garcia Andrade

• Document type: Master's Dissertation
• Press: Campinas, SP.
• Institution: Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Elétrica e de Computação
• Defense date: 2016-02-16

Examining board members

Walmir de Freitas Filho; Thales Sousa; Luiz Carlos Pereira da Silva

• Advisor: Walmir de Freitas Filho

Abstract

The installed photovoltaic generation capacity in the world had an exponential grown in the last years due to the participation of European countries, such as Germany and Italy, besides China that became the largest world component manufacturer of this technology. In Brazil this market has considerable growth potential, particularly due to the elevated irradiance level over the national territory and the publication of resolution #482 in 2012 (ANEEL), which regulates the access of distributed generators in the low voltage distribution system. This resolution promotes technical and economic changes in distribution utilities, and the energetic planning is one of the affected areas. The energy projection and respective purchase to supply all regular customers is responsibility of the local utility, and the low voltage photovoltaic generation modify the customers consume pattern, thus the energetic planning must consider this possible generation. This master¿s project intends to develop a methodology to quantify this generation and aggregate the results to any energy projection method. A probabilistic method based on Monte Carlo simulations is presented to consider all stochastic aspects of photovoltaic generation that impacts on the estimate energy supplied to the grid and the technical losses. Among them are the installation place and respective power injected at each instant. Next, the proposed method is tested to estimate the impact of photovoltaic generation on the energetic planning, considering different horizons from days to one complete year. The results provide the total energy reduction and the technical losses which depends of several grid parameters. The realization of such long term studies, however, demands excessive computational time. In order to reduce this time and make the method compatible for utilities, in the last chapter a granularity analysis is performed to assess the impacts in results¿ precision. As result, the use of one average day with 1-hour resolution is sufficient to estimate the energetic impact of photovoltaic generation up to 1 year horizons (AU)

• FAPESP's process: 14/06513-2 - Impact of photovoltaic generation on the long term demand of distribution systems
• Grantee: José Carlos Garcia Andrade
• Support Opportunities: Scholarships in Brazil - Master