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Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 LONG TERM PLANNING BASED ON THE PREDICTION AND ANALYSIS.

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Presentation on theme: "Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 LONG TERM PLANNING BASED ON THE PREDICTION AND ANALYSIS."— Presentation transcript:

1 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 LONG TERM PLANNING BASED ON THE PREDICTION AND ANALYSIS OF SPATIAL LOAD

2 Frankfurt (Germany), 6-9 June 2011  Increasing regulation of the Brazilian electrical sector.  Mandatory Submission of the Power Distribution System Works Plan to the regulatory agency (ANEEL).  Design a technical and economically efficient plan.  For that the required investments will not overtax the customers. Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Motivation

3 Frankfurt (Germany), 6-9 June 2011  Spatial Electric Load Forecasting.  Load Centers: Optimal Substations’ Influence Areas.  Optimal Allocation and Sizing for New Substations. Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Objectives

4 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Planning Methodology Flowchart Network Data Consumption Data Grids Definition Demand Projection Linking the Grids With the Substations Analysis and Work Proposition

5 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Planning Methodology Flowchart Network Data Consumption Data Grids Definition Demand Projection Linking the Grids With the Substations Analysis and Work Proposition Demand Projection

6 Frankfurt (Germany), 6-9 June 2011  Demand calculated by Energy and Typical Load Curves of each Customer Category: Residential; Commercial; Industrial; Others. Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Spatial Electric Load Forecasting

7 Frankfurt (Germany), 6-9 June 2011  New Load Prediction Model: Calculates the growing rate for each grid; Through the extrapolation of the consumption history of each category; Calculates two different rates:  Global Rate;  Grid Rate; Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Spatial Electric Load Forecasting

8 Frankfurt (Germany), 6-9 June 2011  Global Rate use of SARIMA models to forecast load growth: SARIMA model is auto-regressive of (p) order ; Its main objective is to calculate (predict) the value for an instant t (Yt); Based on the combination of the past values; With a random variable, the error; Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Spatial Electric Load Forecasting

9 Frankfurt (Germany), 6-9 June 2011  Global Rate: SARIMA: Moving average concept:  Series are built through a combination of past errors  Which are the differences between the actual real and the estimated one Historical consumption data from the whole region is used; Co-integrated with: region's GNP, number of customers, network length, climate factor and others. Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Spatial Electric Load Forecasting

10 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Spatial Electric Load Forecasting

11 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Spatial Electric Load Forecasting

12 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Spatial Electric Load Forecasting

13 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Spatial Electric Load Forecasting

14 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Spatial Electric Load Forecasting

15 Frankfurt (Germany), 6-9 June 2011  Grid Rate: The grid load prediction is made by simple linear regression Calculated for each grid separately: Historical consumption for each grid is used; Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Spatial Electric Load Forecasting

16 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 LONG TERM PLANNING BASED ON THE PREDICTION AND ANALYSIS OF SPATIAL LOAD Consumption historical data Residential Commercial Industrial

17 Frankfurt (Germany), 6-9 June 2011  Effective Growing Rate : The grid growth rate is then adjusted to become compatible with the global rate. The weighting between the global rate and the rate for each grid: Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Spatial Electric Load Forecasting

18 Frankfurt (Germany), 6-9 June 2011  Through this approach, one can generate theme maps to illustrate: Load density; Load curves per consumption category; Growing rates per region; Spatial Load Migration Vectors; Idle Areas Identification; Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Spatial Electric Load Forecasting

19 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Planning Methodology Flowchart Network Data Consumption Data Grids Definition Demand Projection Linking the Grids With the Substations Analysis and Work Proposition Linking the Grids With the Substations

20 Frankfurt (Germany), 6-9 June 2011  Before proposing the increase of the existent substations;  Aiming to postpone the investments in the substations capacity increase or built new one;  Optimization for the load supplied in each region. Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Substations’ Influence Area

21 Frankfurt (Germany), 6-9 June 2011  Three methodologies was developed for linking the grids to the substations: Minimizing the Load*Distance Products; Shortest Geographic Distance with penalization; Shortest Network Path; Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Substations’ Influence Area

22 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Substations’ Influence Area

23 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Substations’ Influence Area

24 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Planning Methodology Flowchart Network Data Consumption Data Grids Definition Demand Projection Linking the Grids With the Substations Analysis and Work Proposition

25 Frankfurt (Germany), 6-9 June 2011  Methodologies capable to determine: When the existing substation should be increased or new ones should be built; Where it should be built; How much power should be installed. Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Allocation and Sizing for New Substations

26 Frankfurt (Germany), 6-9 June 2011  Methodologies developed for Indication of proposed substation position and sizing: Active-Set Algorithm; Hill Climbing Algorithm; Particle Swarm Optimization (PSO). Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Allocation and Sizing for New Substations

27 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Allocation and Sizing for New Substations

28 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Tests and Results  The presented algorithms were tested with the network from Campinas city : 17 substations; 729.45 MVA total installed power. 388,612 customers 246.76 MVA load.  In order to evaluate the algorithm’s robustness, a high growing rate of 11.6% per year was considered.

29 Frankfurt (Germany), 6-9 June 2011 Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Tests and Results

30 Frankfurt (Germany), 6-9 June 2011  Chronological indication of when new substations should be installed and which of the existing ones should have their capacities increased.  Indication of the areas where management actions regarding the demand or offer sides are needed.  Indication of areas where induction actions are necessary. Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 Conclusions

31 Frankfurt (Germany), 6-9 June 2011 Questions? Marcus R. Carvalho – Brazil – RIF Session 5 – Paper ID 0728 LONG TERM PLANNING BASED ON THE PREDICTION AND ANALYSIS OF SPATIAL LOAD

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