The Powerflow Case Definition Window

File:Powerflow case Definition Window.PNG

Figure 1 - The Powerflow Case Definition Window

Purpose

To create, edit, run and re-run Powerflow Case Definitions.

Components

• Title Bar
• Menu Bar
• Details Panel
• Effective Date Range Panel
• Run Powerflow Button
• Loaded Data Summary Panel

Title Bar

The Powerflow Case Definition Window Title Bar contains the Powerflow Case Definition name (e.g. 'Final test PFC 1').

Menu Bar

Menu	Option	Purpose	Action
Data	Load Data	To load historical or externally sourced data into the Powerflow Case Definition	Opens the Load Powerflow Window
	Copy Powerflow	To make a copy of the current Powerflow Case Defintion	Opens a new case Definition Window containing the same input data as the current Definition
	Import	To import prepared Powerflow Case Components from the Resource Library	Opens the Component Library Import Window
	Export	To export Components of the current Forecast Definition to the resource Library	Opens the Component Library Export Window
Graphs	Demand Generation Graph	To provide access to a Chart of the Demand and Generation profiles loaded into the Case Definition	Opens the Demand, Generation Graph
Profiles	Demand	Allows access to the Demand Profile for all Nodes (Demand profiles can be imported and exported from here)	Opens the Demand Profile Window
	Generation	Allows access to the Generation Profile for all Nodes (generation profiles can be imported and exported from here)	Opens the Generation Profile Window

Load Powerflow Data Window

Access

The Data > Load Data Option in the Powerflow Case Definition Window Menu Bar.

Purpose

To:

• Control the loading of all Definition input data in a single operation
• Record the details of the last load operation for a specific Definition

Components

Component	Purpose
Load Profile Panel (under the yellow heading of "Demand and Generation"	Controls the loading of Demand and Generation Profile Data
Load Transmission Data Panel (under yellow heading of "Transmission"	Controls the loading of Transmission data
Load/Close buttons	Initiates or cancels the loading operation specified in the template

Load Profile Panel

Access

The Data > Load Data menu option in the Powerflow Case Definition Window.

Purpose

To load seven day Demand and Generation profile data into a Powerflow Case from an online database.

Components

Component	Purpose
Date From Field	Uses a date selector to specify the inclusive date (day) to start loading Demand data into the Powerflow Case Definition
Number of Weeks Button	Specifies the number of weeks of Demand and Generation data (starting at the specified Load Start Date) to use when creating an averaged profile for each Node
Date To Display	Shows the last date for which profile data will be loaded or included into an averaged profile
Clear and Load Check box	Clears all existing Profile data before loading new profile data (toggles with the Keep and Overwrite Check box)
Keep and Overwrite Check box	Keeps existing profile data and overwrites with new data averaged with existing data, allowing averaged Demand profiles to be created using Demand data from discontinuous time periods (toggles with the Clear and Load Check box)
Last Load Operation Details	Records when Demand and Generation profile data was last loaded and if the load operation was succesful
Load Demand Data and Generation Check box	To include or exclude profile data from the next Load Operation
Reset Button	Restores the Profile Load Panel to its default settings

Load Transmission Data Panel

Access

The Data > Load Data menu option in the Powerflow Case Definition Window.

Purpose

To specify the date range of Transmission data you want to load into a Powerflow Case Definition from you default Transmission System data source.

The default EMarketOffer data source for Transmission System data

When uploading Transmission System data into a Powerflow Case EMarketOffer first checks the Inputs sub-folders for valid EM6/COMIT/Ellsoft files, and uses these in preference to data from an online database, even when a connection to obtain Transmission System data has been defined.

Transmission System Data Loading Modes

Transmission System data can be loaded into a Powerflow Case Definition in one of two modes:

• Date Range Mode
• Period Mode

Date Range Mode

Accessed by clicking on the "Date Range" tab under the "Transmission" heading.

Purpose

To select a date range for loading a Powerflow Case Definition with Transmission System data. This Mode is only available when Transmission System data can be obtained from EM6/COMIT/Ellsoft provided files.

A Definition loaded through the Date Range Mode will contain the following:

• Base Grid Configuration
• All Re-ratings applied during the date range
• All Group Constraints applied during the date range

Components

Component	Purpose
Date Selectors	Allows you to specify the inclusive dates to start/end loading Transmission data into the Definition
Clear and Load Check box	Clears all existing Transmission data before loading new data (toggles with the Keep and Overwrite Check Box)
Keep and Overwrite Check box	Keeps existing Transmission data and overwrites with new data from the database
Last Load Operation Details	Records when Transmission data was last loaded into the Definition
Include Transmission Data in Load Check box	To include or exclude Transmission data from the next Load Operation
Reset Button	Restores the entire Transmission Load Panel (file and database) to its default settings: Start Date = First date of the Effective Date Range End Date = Last date of the Effective Date Range Clear and Load = Checked Include Transmission System data in next load operation

Period Mode

Accessed by clicking on the "Period" tab under the "Transmission" heading.

Purpose

To select a specific period which will provide the basic Transmission System data for all periods in your Powerflow Case Effective Date Range. This is the only loading option available when EM6/COMIT data files are not available.

NOTE: When using Period Mode EMarketOffer applies the basic grid and re-ratings to obtain the System Configuration for the Period and applies this to all periods in the Powerflow Case Effective Date Range. It does not keep specific record of Circuit re-ratings or Group Constraints, which are kept when loading in Date Range Mode.

Control of the Transmission data takes place through the Load Transmission Data Panel in Period Mode.

Components

Component	Purpose
Date Selector	Specifies the inclusive date of the period to load Transmission data into the Powerflow Case Definition
Period Selection Bar	Used with the mouse to select the loading Period
Period Selection Roller	Used with the mouse or by text entry to select the loading Period
Clear and Load Check box	Clears all existing Transmission data before loading new data (toggles with the Keep and Overwrite check box)
Keep and Overwrite Check box	Keeps existing Transmission data and overwrites with new data from the database
Last Load Operation Details	Records when Transmission data was last loaded
Load Transmission Data Check box	To include or exclude Transmission data from the next Load Operation
Reset Button	Restores the entire Transmission Load Panel (file and database) to its default settings: Start Date = First date of the Effective Date Range End Date = Last date of the Effective Date Range Clear and Load = Checked Include Transmission System data in next load operation

The Demand Generation Graph

Access

The Graphs > Demand Generation Graph menu option in the Powerflow Case Definition Window.

Purpose

To show the Demand and Generation Profile for the current Powerflow Case Definition in graphical form.

Features

Feature	Purpose
Title Bar	Shows the type of Graph being displayed
Date Range Selectors	Displays how the loaded profile will appear on any specific day (and for how many days)
Chart Options Link	Opens the Chart Options Window where you can control some aspects of the chart's appearance
Chart Area	Contains the Chart's graphical contents
Quantity Axis	Linear scale of Demand/Generation quantity (MW)
Time Axis	Profile days
Demand Line	Profile Demand displayed as a single line
Generation Area	Profile Generation displayed as a shaded area
Period Roll Over	A mouse-activated feature showing (for the point under the cursor): Day, Date and Period (e.g. "Tue, 23 Aug 200 : 37") Demand Quantity Generation Quantity

NOTE: The Demand Generation Graph Window is sizable. The chart area expands and compresses to fill the available space.

>> To change the colours used on the graph:

1. Click on the blue Options... link in the top right hand corner of the Graph window
2. Choose the required colours using the options in the pop-up window.