Barcelona 12 15 May 2003 THREEPHASE DISTRIBUTION POWER

Barcelona 12 -15 May 2003 THREE-PHASE DISTRIBUTION POWER FLOW WITH A GEOGRAPHIC INFORMATION SYSTEM Raúl VILCAHUAMÁN(1, 2) (1) Joaquim MELÉNDEZ(1) Universitat de Girona Spain Iván MEDINA(3) Josep Ll DE LA ROSA(1) Universidad Nacional del Centro del Perú (3) IANSA EIRL, Peru (2) Author Vilcahuaman. Melendez Country PE Session V – Block 2 – Question 23 1

Barcelona 12 -15 May 2003 INTRODUCTION • A software for computing three-phase distribution power flow(1 , 2 , 3 ) has been integrated with a Geographic Information System (GIS) FLUDIS GIS • It takes into account : Lines, transformers, shunt var elements and loads modeled by a load window considering load composition. • FLUDIS GIS has been used for analysis and planning of distribution systems. Author Vilcahuaman. Melendez Country PE Session V – Block 2 – Question 23 2

Barcelona 12 -15 May 2003 POWER FLOW IN DISTRIBUTION SYSTEMS • EDS normally operate in radial configurations. • It makes necessary to consider power flow analysis with convergence characteristics (speed and reliability). • Some methods: – Ladder – Current Summation – Power Summation (computationally efficient) Maximum error = 10 -4 Author Vilcahuaman. Melendez Country PE Session V – Block 2 – Question 23 3

Barcelona 12 -15 May 2003 Load and loses modeling Load window User profiles (location, time) - industrial, - residential, - holiday, etc. Lines: Eq. imp. - Overhead and underground. - Neutral and grounded Transformers - Series leakage impedance - Shunt core loss function Residential winter load Author Vilcahuaman. Melendez Country PE Session V – Block 2 – Question 23 4

Barcelona 12 -15 May 2003 FLUDIS GIS • FLUDIS GIS: Software for planning design and operation study of electrical distribution systems. • FLUDIS GIS inegrates software modules in Map. Info, Delphi and MS SQL. • Basic features: – Open: input and append data – Data base management – Modular • • Power flow computing. Network drawing facilities. File manager capabilities. Load forecasting : FUTURA. Author Vilcahuaman. Melendez Country PE Session V – Block 2 – Question 23 8

Barcelona 12 -15 May 2003 FLUDIS GIS (II) • FLUDIS GIS has been tested in real networks without problems. It supports until 5000 nodes. • Data in GIS should be logically complete. • With lines with O Km. NO problem Power Summation method. Author Vilcahuaman. Melendez Country PE Session V – Block 2 – Question 23 9

Barcelona 12 -15 May 2003 FLUDIS GIS (III) • Power flow example : Power by phase, load factor, separate losses Author Vilcahuaman. Melendez Country PE Session V – Block 2 – Question 23 10

Barcelona 12 -15 May 2003 FLUDIS GIS (IV) • Network data can be actualized when desired without conflicts. The load flow always uses data form the updated Data Base. • FLUDIS GIS is used for planning and design: – It incorporates a package for optimal allocation of shunt elements (size, place and control). – FLUDIS GIS is also linked with FUTURA, a load forecasting package. Author Vilcahuaman. Melendez Country PE Session V – Block 2 – Question 23 11

Barcelona 12 -15 May 2003 Load forecasting • An hybrid system for electric load forecasting using CBR and expert system called FUTURA is connected to FLUDIS GIS Author Vilcahuaman. Melendez Country PE Session V – Block 2 – Question 23 12

Barcelona 12 -15 May 2003 CONCLUSIONS • We report FLUDIS GIS. • Integration of the GIS and a three-phase distribution load flow program. • Transformer and line losses are identified. • State of the Art tool for the analysis, design and planning of electrical distribution systems Author Vilcahuaman. Melendez Country PE Session V – Block 2 – Question 23 13