Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-04-26T22:37:48Z No. of bitstreams: 1 WagnerJoseNascimentoDeOliveira_DISSERT.pdf: 2625823 bytes, checksum: 6f8d20d7bbada86118d86f09b13a1e6f (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-05-02T23:24:37Z (GMT) No. of bitstreams: 1 WagnerJoseNascimentoDeOliveira_DISSERT.pdf: 2625823 bytes, checksum: 6f8d20d7bbada86118d86f09b13a1e6f (MD5) / Made available in DSpace on 2016-05-02T23:24:37Z (GMT). No. of bitstreams: 1 WagnerJoseNascimentoDeOliveira_DISSERT.pdf: 2625823 bytes, checksum: 6f8d20d7bbada86118d86f09b13a1e6f (MD5) Previous issue date: 2015-06-03 / Trata-se de um caso pr?tico visto na ind?stria de saneamento em que se observaram par?metros de qualidade de energia el?trica utilizando medidores de grandezas el?tricas durante as manuten??es preditivas realizadas na Companhia de ?guas e Esgotos do Rio Grande do Norte (CAERN). Foram constatadas correntes harm?nicas em desconformidade com as normas, causadas pelo acionamento dos motores por meio de inversores de frequ?ncia. Para a solu??o do caso, este trabalho de conclus?o de Mestrado apresenta o projeto de filtros harm?nicos passivos em sintonia ?nica a serem instalados em paralelo nos terminais de baixa tens?o de cada um dos transformadores de 300 kVA da subesta??o que fornece energia el?trica para a Esta??o Elevat?ria de ?gua Bruta (EEAB) do Jiqui, da CAERN, principal capta??o de ?gua de Natal-RN. Os equipamentos promovem a redu??o das distor??es harm?nicas de corrente para os n?veis tolerados nas Normas IEC (International Electrotechnical Commission) 61000-3-4 e IEEE (Institute of Electrical and Electronic Engineers) 519. O sistema ? modelado desde a subesta??o da concession?ria at? as cargas energizadas pela subesta??o da CAERN e simula a opera??o dos filtros de 5?, 7?, 11? e 13? ordens de forma isolada e tamb?m interligada, obtendo as respostas para as implementa??es feitas para os diferentes fatores de qualidade. S?o avaliadas as novas harm?nicas de corrente e tens?o para cada frequ?ncia, bem como o comportamento do sistema na frequ?ncia. Observam-se as resson?ncias em s?rie dos filtros sintonizados e tamb?m as resson?ncias paralelas, sendo utilizada para tal a ferramenta computacional HARMZS, vers?o 1.8, desenvolvida pelo Centro de Pesquisas de Energia El?trica - CEPEL. Para as simula??es das correntes e tens?es ? usado o programa SCILAB, vers?o 5.5.1. / This work is based in a sanitation industry real case where electrical power quality parameters were diagnosed using electrical quantities meters during the predictive maintenance done in Companhia de ?guas e Esgotos do Rio Grande do Norte (CAERN). Divergent harmonic currents were observed against the standard recommendations, caused by the use of inverters for driving the motors. To solve this case, this final work presents passive harmonic filters single tuned to be instaled in parallel with the low voltage cables of each 300 kVA transformers that supplies power to raw water pumping station of Jiqui-CAERN, the main water supplier of Natal-RN. The equipments promote the reduction of harmonic current distortion to be within the tolerated levels to comply with the IEC (International Electrotechnical Commission) 61000-3-4 and IEEE (Institute of Electrical and Electronic Engineers) 519 standards. This study models the entire system, from the concessionary power substation until the final loads located in CAERN, and proposes the computer simulations of installing 5th, 7th, 11st and 13rd order filters isolated and integrated, obtaining the answers to all different applications performed with different quality factors. New harmonic current and voltage for each frequency, as well as the system behavior in the frequency a re evaluated. Series and parallel resonances in tuned filters are observed with the computational tool developed by Centro de Pesquisas de Energia El?trica (Electric Power Research Center) ? CEPEL, HARMZS, version 1.8. For currents and voltages simulationsis used the computational tool SCILAB, version 5.5.1