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Using Geospatial Data to Generate One-line Diagrams of Electrical Power Systems Lia Toledo Moreira Mota, Alexandre de Assis Mota, Wu, Shin-Ting School.

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Presentation on theme: "Using Geospatial Data to Generate One-line Diagrams of Electrical Power Systems Lia Toledo Moreira Mota, Alexandre de Assis Mota, Wu, Shin-Ting School."— Presentation transcript:

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2 Using Geospatial Data to Generate One-line Diagrams of Electrical Power Systems Lia Toledo Moreira Mota, Alexandre de Assis Mota, Wu, Shin-Ting School of Electrical and Computer Engineering State University of Campinas

3 November 23Geoinfo Topics Power transmission and distribution systems Power transmission and distribution systems One-line diagrams One-line diagrams State-of-the-art State-of-the-art Objective Objective Proposal Proposal Results Results Concluding remarks Concluding remarks

4 November 23Geoinfo Topics Power transmission and distribution systems Power transmission and distribution systems One-line diagrams One-line diagrams State-of-the-art State-of-the-art Objective Objective Proposal Proposal Results Results Concluding remarks Concluding remarks

5 November 23Geoinfo Power transmission systems Networks connecting generators and load centers Networks connecting generators and load centers

6 November 23Geoinfo Power transmission systems (110 or 220 V)

7 November 23Geoinfo Power transmission systems Complex geographically dispersed network

8 November 23Geoinfo Topics Power transmission and distribution systems Power transmission and distribution systems One-line diagrams One-line diagrams State-of-the-art State-of-the-art Objective Objective Proposal Proposal Results Results Concluding remarks Concluding remarks

9 November 23Geoinfo One-line diagrams Power Network Three-phase network One-phase network = One-line diagram

10 November 23Geoinfo [Monticelli, 1999]: Bus section/switching device model: Bus section/switching device model: switching devices-oriented representation for supporting decision-makings in fault conditions or maintenance situations switching devices-oriented representation for supporting decision-makings in fault conditions or maintenance situations Bus/branch model: Bus/branch model: a simplified representation of the bus section/switching device model a simplified representation of the bus section/switching device model One-line diagrams: two models

11 November 23Geoinfo One-line diagrams: two models widely used for studies and analyses

12 November 23Geoinfo One-line diagrams: graph Bus/Branch model = Graph Bus/Branch model = Graph Nodes: buses Nodes: buses Arcs: branches Arcs: branches

13 November 23Geoinfo Power transmission systems Complex geographically dispersed network

14 November 23Geoinfo Connectivity information -> readable one-line diagram?

15 November 23Geoinfo Topics Power transmission and distribution systems Power transmission and distribution systems One-line diagrams One-line diagrams State-of-the-art State-of-the-art Objective Objective Proposal Proposal Results Results Concluding remarks Concluding remarks

16 November 23Geoinfo State-of-the-art CAD systems CAD systems Problem: the layout is up to users Problem: the layout is up to users One-line dedicated drawing algorithms (Ong et al., 2000; add-on package ArcGIS, 2005?) One-line dedicated drawing algorithms (Ong et al., 2000; add-on package ArcGIS, 2005?) Problem: unsuitable for cyclic graphs Problem: unsuitable for cyclic graphs Motas algorithm (Mota and Morelato, 2004) Motas algorithm (Mota and Morelato, 2004) Problem: the initial node placement configuration is up to users. Problem: the initial node placement configuration is up to users.

17 November 23Geoinfo Topics Power transmission and distribution systems Power transmission and distribution systems One-line diagrams One-line diagrams State-of-the-art State-of-the-art Objective Objective Proposal Proposal Results Results Concluding remarks Concluding remarks

18 November 23Geoinfo Objective General context: to provide an algorithm for generating readable one-line diagrams from connectivity information General context: to provide an algorithm for generating readable one-line diagrams from connectivity information Specifically: to improve the algorithm proposed by Mota et al. Specifically: to improve the algorithm proposed by Mota et al.

19 November 23Geoinfo [Mota et al., 2004] Given: the comfortable length KL, and the connectivity between the buses and branches Given: the comfortable length KL, and the connectivity between the buses and branches N1 – N2; N2 – N3; N1 – N2; N2 – N3; N3 – N1 N3 – N1 Motas algorithm Output: coordinates Output: coordinates {xc, yc} of each bus {xc, yc} of each bus

20 November 23Geoinfo Motas algorithm Buses Positively charged particles Principle: to use physically-based approach for placing the buses in an iterative way. Braches Springs

21 November 23Geoinfo Buses 30 Buses 40 Branches 40 Branches Motas algorithm: Example Power systems test case archive:

22 November 23Geoinfo Motas algorithm: Problem

23 November 23Geoinfo Topics Power transmission and distribution systems Power transmission and distribution systems One-line diagrams One-line diagrams State-of-the-art State-of-the-art Objective Objective Proposal Proposal Results Results Concluding remarks Concluding remarks

24 November 23Geoinfo Proposal One-line diagram Graph [Mota et al., 2004] Geospatial Graph

25 November 23Geoinfo Proposal

26 November 23Geoinfo Proposal Step 1: Obtain the topology (connections relations) of the power systems elements (buses and branches). Step 1: Obtain the topology (connections relations) of the power systems elements (buses and branches). Step 2: Add to this topological information, geospatial data related with the network elements Step 2: Add to this topological information, geospatial data related with the network elements Step 3: Generate an estimate of the positions of the buses on the basis of the geospatial data. Step 3: Generate an estimate of the positions of the buses on the basis of the geospatial data. Step 4: Apply the physically-based algorithm proposed by Mota et al. to generate a crossing-free one-line diagram. Step 4: Apply the physically-based algorithm proposed by Mota et al. to generate a crossing-free one-line diagram.

27 November 23Geoinfo Proposal Step 1 Step 2 Node 1: Northwest Node 2: Southwest Node 3: Southeast Node 4: Southeast + Nodes: 1,2,3 and 4 Branches: 1-2, 1-3 and

28 November 23Geoinfo Proposal Step 3 Step

29 November 23Geoinfo Topics Power transmission and distribution systems Power transmission and distribution systems One-line diagrams One-line diagrams State-of-the-art State-of-the-art Objective Objective Proposal Proposal Results Results Concluding remarks Concluding remarks

30 November 23Geoinfo Buses 30 Buses 40 Branches 40 Branches Results: IEEE 30 Test Case

31 November 23Geoinfo Results: Hypothetical geospatial data

32 November 23Geoinfo Results

33 November 23Geoinfo Results: Brazilian subsystem 58 buses 58 buses 64 branches 64 branches

34 November 23Geoinfo Results: Motas algorithm

35 November 23Geoinfo Results: Available geospatial data

36 November 23Geoinfo Results: First configuration

37 November 23Geoinfo Results: Improved algorithm

38 November 23Geoinfo Topics Power transmission and distribution systems Power transmission and distribution systems One-line diagrams One-line diagrams State-of-the-art State-of-the-art Objective Objective Proposal Proposal Results Results Concluding remarks Concluding remarks

39 November 23Geoinfo Concluding remarks Using geospatial data for estimating the first configuration of the buses may reduce the branch crossings in Motas algorithm. Using geospatial data for estimating the first configuration of the buses may reduce the branch crossings in Motas algorithm. The most important feature of the enhanced algorithm is that incomplete geospatial data suffice in most cases. It is useful for generating one-line diagrams of equivalent circuits, both for studies and analyses. The most important feature of the enhanced algorithm is that incomplete geospatial data suffice in most cases. It is useful for generating one-line diagrams of equivalent circuits, both for studies and analyses. As further work, As further work, to apply the algorithm for visualizing the electrical network for distinct purposes (planning, monitoring, etc.). to apply the algorithm for visualizing the electrical network for distinct purposes (planning, monitoring, etc.). to combine the algorithm with the map simplification algorithm proposed by Adler and Wu to visualize geo-spatial one-line diagram. to combine the algorithm with the map simplification algorithm proposed by Adler and Wu to visualize geo-spatial one-line diagram.

40 November 23Geoinfo Thank You! Thank You!

41 November 23Geoinfo Electrica forces (Coulombs Law): Electrical forces (Coulombs Law): FC km =f(d km 2 ) FC km =f(d km 2 ) Motas algorithm Mass-spring forces (Hookes Law): Mass-spring forces (Hookes Law): FH km =g(d km -KL) FH km =g(d km -KL) (Branch natural length) d km < KL FH < 0 (repulsion) KL k m d km d km > KL FH > 0 (attraction)


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