7 Creating a Single Line Schematic Diagram
7 Creating a Single Line Schematic Diagram
The geographical view is intended for defining actual physical real-world locations of equipment. The Location and PositionPoint classes in CIM are used to store this data and so any piece of Equipment will have only one single geographical location. The Diagram Editor is for creating schematics, and as such equipment may appear in multiple diagrams for different contexts.
We will create a simple single-line diagram for our IEEE 14 Bus model by performing a manual layout of the data in Cimphony’s Single Line Diagram Editor.
7.1 Opening the Single Line Diagram Editor
- From the main menu select Editors and Open SLD Editor from the dropdown menu or click no the icon.
- Select the IEEE 14 Bus Network from the Local Repository→IEEE Test Networks folder and click Next.
- Select Create New Diagram (Manual Build).
- Enter a Diagram Name or leave the default Diagram name in place
- Click Next to show the SLD Options page.
Cimphony supports defining schematic layouts for operational node/breaker or planning bus/branch models. For this diagram we will use the operational data which will map the Connectivity Nodes and BusbarSections to the diagram Bus elements rather than the TopologicalNodes which represent computed buses in CIM
- From the dropdown under Select Transform choose SLD to CIM16 (Operational), this should also automatically change the Inverse Transform dropdown to CIM16 to SLD (Operational). Leave the Convert Source Coordinates option disabled so that all coordinates will be stored as native screen pixel X/Y values.
- Click Finish to open the Single Line Diagram Editor with a blank canvas.
7.2 Plot Data on Single Line Diagram
- Select BusbarSection from Types in the Cimphony Browser.
- Drag the first instance in the list from the Instances pane onto thediagram editor which will create a small horizontal bus symbol.
- Select the bus symbol and click and drag one of the small black rectangular handles to change the width of the symbol.
- Select SynchronousMachine in the Types window.
- Select the Bus 1 HV SM instance and drag this to the diagram. This will plot a symbol for the generator and connect it to the existing Bus symbol.
The connected equipment can either be found by knowing that the names correspond to the bus (as in this instance), or the navigation tree can be used by following paths through the data to the connected element (e.g. CondutingEquipment→ Terminals→ ConnectivityNode→ Terminals→ (Other Connected) ConductingEquipment) then dragging these elements onto the diagram. The elements to be plotted do not have to be taken from the root and can be taken from anywhere in the tree.
- Select ACLineSegment from Types. The instances 1-2 and 1-5 connect to the plotted Bus so can be dragged onto the diagram and will be automatically conected.
- Select the plotted line, two small black handles will appear at either end, these can be moved to change the line’s position
- Selecting and dragging the small black square in the centre of the line will add a bend-point to the line allowing it to have complex routing.
- Return to BusbarSection in Types and drag the instances Bus 2 HV and Bus 5 HV on to the diagram.
- The lines should automatically connect to the buses when they are plotted.
- The other elements such as Loads (EnergyConsumer in CIM), Shunts (LinearShuntCompensator) and Transformers (PowerTransformer) can all be dragged and dropped in the same way.
- Lines can be added with only a single Bus and the other side will show a diamond icon indicating that it has not been connected.
- Repeat this process until all the BusbarSections and associated equipment are plotted on the diagram.
- The properties view at the side allows the rotation of elements to be changed so that their orientation can be changed for better placement
- To remove a diagram element press Delete and a window will promptyou to either remove the symbol from the diagram or delete the object entirely from the model.
Deeting from the model will perform a cascading delete that removes the object and its dependency tree. For example removing a Load will delete the source EnergyConsumer element and its Terminal. Removing a Transformer will delete the PowerTransfomer along with any Terminals, PowerTransformerEnds, any TapChangers (Ratio or Phase) and associated state variable data
- At the moment no updates have been made to the source data. To commit these changes do File→Save with the SLD Editor selected. This will create the CIM Diagram, DiagramObject and DiagramObjectPoints and associates them with the source data elements.
- Save the updated CIM data by doing File→Save with the Cimphony Browser selected. As with the addition of geographical data we must provide a commit message describing the changes that were made, in this case “Addition of a schematic overview diagram”.