Proposal of Papers
17th international conference on electricity distribution
Barcelona, 12-15 May 2003
Contributor identificationContribution identification
Name:SachsSession:5
Company:Siemens AGBlock:2
Address:Paul-Gossen-Str. 100Paper no:5.60
91052 Erlangen
Germany
Phone:+49 9131 7 33429Language used on the floor:English
Mobile:+49 170 33 58 916Accompanying visuals on file:sachs-de-author-b2-P5.60
A variable integration between geographic information systems and planning tools triggered by different planning tasks
With our paper we want to present you a coupling between the both systems – GIS and Network calculation - which has been done together with e.on Germany, but is used in several other utilities in similar ways, too.
We want to do this not in the traditional way by presenting you slides, but by showing you a video from the real procedure starting with the GIS system and generating the different networks for Network Planning and Calculation. In this way you can easily see the amount of work, which has (not) to be done and we hopefully can convince you, that this is really working.
First step is the selection of the area (s) within the GIS system, the network planning engineer wants to investigate. This is here done by choosing one or more predefined areas by name with all connected elements. The systems colours this area violet. In this way it is possible to check the selection.
Next step is to set the parameters of the interface:
-the name of the new SINCAL data base
-the size of the transformers
-the colours for different types of lines: main-spindle-lines and lines of second order
-symbols for breakers
Because the actual loads are not available from SCADA system, loading factors of transformers, taking into consideration the diversity factors of the consumers, are set. There are 50 stages available and an additional common increase factor for all loads.
In the next mask you can see, that not all information are taken out of GIS:
-the high voltage network is available in a separate data base, which has been transferred from a second calculation program directly into SINCAL
-the transformers between high voltage and medium voltage are stored in a separate data base, too.
These parts could also be stored in GIS, but in this project, historically they have not been there.
Now we are ready to start the interface and you can control the types and the numbers of elements, which are transferred to the network planning data base (Access or Oracle). As you can see, this network part has more than 500 nodes, 170 transformers and 350 lines.
When this is finished, the user leaves the GIS System and starts the network planning tool, without doing anything in between.
The interface software– we call it a GIS-Viewer – has checked if all necessary data have been available and has generated some lacking information according to predefined rules.
When opening the generated network within the calculation program, you can easily see it looks the way as it does in the GIS system. By zooming in a little bit you can recognized the things, which have been created additionally by the interface:
-there is now a slack (infeed) for the calculation
-the transformers are branch elements with a graphical representation
-the low voltage nodes and the loads have been generated according to the given factors - which the network planning engineer can easily change later on of course.
Without doing anything in addition, the planner can now start the (load flow,…. ) calculation and the results are given in the network map.
The next zoom window shows, that there is even a generation of schema graphic for elements, which had none before.
But not all network engineers need the same kind of map. For instance the protection setting engineers prefer a schematic network diagram in stead of the semi scale for network planning to find the grading paths very easily.
Therefore, the interface can manipulate the semi scale network and prepare a schematic map.
As you can see the basis for this transformation is the just generated network and additionally the already existing network parts for transformers and high voltage network. That is why you can use this program for generating schematic networks even when you have no GIS system and only with a digitized network within the network planning tool.
After loading the new network, the user findsa map with the most important substations and the main lines as direct connections. But this is only one layer for the quick overview. All other equipments such as transformers or loads or poles and other helping nodes are stored in several layers and could be switched on or off. You can see the details be zooming in again and when selecting an element, you can check, that all input data are available.
At this stage the network is ready to import the protection elements for the protection coordination or for other evaluations.
We hope you got a rough idea, how this integration is working. If you have further questions please don’t hesitate to contact us.
sachs_de_author_Session5_B2-P5.60.docSESSION No 5PAPER No 5.60