MW Transactions Display

See Also

 

The MW Transactions Display is a quick way to view the defined base transactions between areas within the load flow case.

The Matrix of Transactions display is set up as a matrix of transactions, with the areas listed as both the column and row identifiers. It is important to note that the direction of the transaction is such that the area represented by the row is assumed the exporting area, and the area represented by the column is assumed the importing area. For example, if there is a 50 MW transaction from area one to area two, you will see a +50 in the matrix in row 1, column 2. However, if you look at row 2, column 1, you will see a – 50. This is because the grid is displaying the EXPORT from area two to area one, but since area two is importing, not exporting, the value is represented as negative.

Each row and column position, with the exception of the diagonal positions (it does not make sense for an area to export to itself), can be directly modified by the user in this information display. As you type a value in one of the matrix positions, Simulator automatically fills the symmetric matrix position with the negative of the value you enter. This makes for a quick and easy location for adding and removing transactions from the case.

Note that you cannot modify Unspecified transactions in the MW Transactions display. This makes sense, as the unspecified transactions have only one associated area. To modify unspecified transaction amounts, you must open the Area Information Dialog for the area you wish to modify, and change the Unspecified transaction amount.

The List of Transactions is just another way of showing the transactions between areas. The List of Transactions Display is a class of Case Information Display and therefore can be used in a manner consistent with all other case information displays. It has a local menu from which you can print, copy, or modify its records as well as view the information dialog of its associated areas. You can also sort the area records by clicking on the heading of the field by which you want to sort.

Note that a special feature is available in the right-click local menu called Clear Transactions and auto-insert tieline transactions. By choosing this option all MW transactions in the case will be deleted, and all Unspecified MW transactions for each area will be set to zero. Then new MW transactions will be created between each pair of areas that area directly connect to one another. The amount of the new MW transactions will be set equal to the actual sum of the flow on the tielines between the connected areas.

 

By default, the List of Transactions display contains the following fields:

Export Area Number, Export Area Name

Exporting area number and alphanumeric identifier.

Other Area Number, Other Area Name

Importing area number and alphanumeric identifier.

MW Transfer

Value of the transfer in MW.