Distributed Computing Setup
On both machines Ensure you have the latest Simulator build installed. It should be the same version on both machines. Use the RegSimAuto utility in the Simulator installation directory to ensure the correct version of Simulator is registered. On the remote machine Set up a user that will be used to run distributed computation. This […]
September 14, 2017
Using Contingency Categories for monitoring of different voltage deviation limits for different contingencies
Previous knowledge base articles have covered both Monitoring voltages for Post Contingency Voltage Drop Criteria Monitoring which covered how to monitor all buses in the system for a particular voltage drop. How to specify different Voltage Deviation Limits for different buses in Contingency Analysis which did a similar thing but allowed the criteria to be […]
September 30, 2015
Transient stability voltage collapse: See it with large plots and Min/Max result tracking
We had a rather strange support question from a customer running a transient stability run with a three-phase fault that was on for 2 seconds on a 230 kV bus (they were studying delayed clearing of a fault with about a dozen switching actions occurring which eventually cleared the fault after 2 seconds). The network boundary […]
April 3, 2015
Initial wiggles in a very small transient stability case
A common question when a user first starts playing with very small transient stability test cases is “Why do I see wiggles in my plots with no disturbance?” On large transient stability simulations there can be many different reasons for this, but for a 9 bus, 1 generator case you would rightly not expect to […]
June 12, 2013
Remote License Troubleshooting
If you are trying to start Simulator or Retriever using a remote license but the hardware key is not detected, you may need to manually point to the hardware key’s location on the network. To configure where your machine goes to look for remote license keys, make sure to run the full Simulator or Retriever installation […]
June 10, 2013
PowerWorld Simulator does not include a built-in tool for video capture or movie making. Commercial and freeware tools are available from other sources to capture video from PowerWorld Simulator, Retriever, and any other desktop applications. Current offerings may be found here, or by simply searching online for video capture software.
February 21, 2013
How do the key fields and required fields for aux files and copy/paste from Excel work?
Each object type in Simulator (i.e. Loads, Generators, Buses, etc…) has a number of key fields and additional required fields. Key fields are fields that must be included for existing records when pasting data into Simulator from a spreadsheet application such as MS Excel or when loading information from an aux file. Required fields are fields that must be specified (in addition […]
July 5, 2012
What method does the OPF/SCOPF solution use?
It is a sequential linear programming optimal power flow. We use our own revised simplex code.
July 5, 2012
I am getting $5000 / MW-hr LMP’s. Can that be correct?
If a constraint cannot be enforced due to insufficient controls, the slack variable associated with enforcing that constraint cannotbe removed from the LP basis. Marginal cost depends on the arbitrary cost of the slack variable. This value defaults to $5000 per MW-hr in order to enforce the equality constraint that a control area’s generation should […]
July 5, 2012
Can I have negative marginal prices? What do they mean?
Yes, in highly congested systems you can in fact see negative LMP’s at a bus (or buses). This is always coupled with high LMP’s at other buses. A negative LMP means that serving an additional MW of load at the negative LMP bus will reduce the operating cost. More flow to the load creates a […]
July 5, 2012