Instructions
Sygration Generation Market Simulator
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The Generation Market Simulator is run from the Sygration corporate server and accessed through a standard web-browser. A simulation is run by completing each field on the input form, including the location of the generator, range of dates to apply and the offers for energy and operating reserve ("bids"). To get started, it is easiest to cut-and-paste the example bids below into the appropriate window and submit the request. The Simulator will create a new screen with the results of the simulation.
Delivery Point
You
may choose from the list of Delivery Points available in the pull-down box for
your simulation. The simulator uses historical transmission congestion data to
determine how your facility would have been dispatched within Ontario
Electricity Market. This data is provided on a 5-minute resolution for very
specific areas within Ontario. To get an accurate simulation, you must choose a
Delivery Point that is as physically and electrically close to your facility as
possible.
There
are over 240 Delivery Points available for use by the simulator, with data available
as far back as October 2002. However, access to this data is limited to customers
of the Generation Market Simulator. You can refer to the Full List of Delivery Points to determine what delivery
point is the best to use for your simulation and Contact Sygration to arrange
access to the data.
Guest
users will only have access to 15 days of data using the BRUCEB-LT.G5 Delivery Point.
Historical Data Range
Select
the Start and End dates for the historical evaluation period using the pull
down menus or by choosing dates with the 
calendar tool. The
simulator will evaluate the historical data within this date range to determine
how your facility would have been dispatched.
Dates
must be historical (future dates are ignored) as the simulator output is based
entirely on historical market and transmission data. The data is available on
each Delivery Point from October 2001.
Report Resolution
The
simulator always calculates dispatch and pricing information based on historical
5 Minute data. However, you have a choice to display the results in the
original resolution or you may have it rolled-up and summarized to an Hourly or
Daily level. While the execution time will not change (calculates for every 5
minute interval) the size of the reports will change drastically.
It
is generally best to request the full 5 Minute data only for smaller ranges of
dates (i.e. a few days), and use the Hourly or Daily Roll-Up for larger
evaluation periods.
Unconstrained Ramp Rate Multiplier
The unconstrained ramp-rate multiplier is a number that is multiplied against the offer's ramp-rates, and is used by the IESO to artificially raise the ramping capabilities of a unit in establishing the unconstrained market schedule.
In January 2007, the IESO Board of Directors approved a resolution to change the ramp-rate multiplier from its current value of 12x to the new value of 3x. This will bring unconstrained market schedules closer to constrained dispatches, and will tend to raise market prices for energy while lowering CMSC payments. The simulator allows you to choose a multiplier factor of 1x (no multiplier), 3x (new multiplier) and 12x (old multiplier).
The ramp-rate multiplier has no bearing on the constrained dispatch, meaning that any changes to this value will not impact your dispatch quantities. As the simulator always uses historical price data, any calculated energy settlement credits (NEMSC) will not change as the result of using a different multiplier. However, you can expect to see a reduction in CMSC payments when using a lower multiplier. As the 3x multiplier is integrated into the market, you will likely see market price increases that exceed this reduction in CMSC.
Report Contents
You
may have the simulator report on the full detail of its internal calculations,
or have it limit the results to specific areas of interest. The data that is
reported for each Detail selection is show in the table below:
|
Market Prices |
Market
prices (unconstrained) for Energy and all Operating Reserve classes. Generators are paid based on these
prices. |
|
Shadow Prices |
Locational
Marginal Prices for Energy and all Operating Reserve classes. Used to determine the actual
dispatch. |
|
Market Schedules |
Unconstrained
schedule for Energy and all Operating Reserve classes. Used in the calculation of
congestions credits. |
|
Dispatch Quantities |
The
dispatch instructions (MW) for Energy and each class of Operating Reserve. |
|
Settlements Data |
The
revenue the generator would receive for Energy, Operating Reserve, and all
Congestion Management Settlement Credits (CMSC). |
|
Dispatch Events |
A
counter indicating that the generator has been dispatched Up or Down. |
|
Historical Generator Data |
Comparison
of the simulator generator output and the historical generator output, for
the generator selected in the Output Comparison window. Used to assess simulator accuracy or
determine competitive bids. |
|
Nodal Settlements (Hypothetic) |
Shows
the credits that would be received if the Ontario market were based on a
Nodal pricing system, and not a uniform pricing system. |
Standing Bid Profile
The
Simulator allows multiple bid sets to be entered, which will be used for
different days of the week. This provides
similar functionality to the Standing Bid functionality provided by the IESO in
its Market Participant Interface; for example, to allow participants to have
different standing bids for weekdays and weekends.
Up
to two separate Bid Sets can be entered (contact Sygration if that is
insufficient). By selecting which
bid set is to be used for the days of the week, the simulator will choose the
appropriate set in its calculations. By default, only Bid Set 1 will be used as all days of
the week are selected against it.
If you wish to use Bid Set 2 for certain days, select the desired days
on the second row. At least the
Energy Bid must be provided for each set that has one or more days chosen.
While
the bid information is entered in the screens below, only the bid set that his
highlighted blue (with ß Edit
Below beside the row) can be edited. To select another bid for
editing, select the Scroll Set button. This will change the position of the
highlight and arrow, and the Set ID (1 or 2) in each bid window.
Energy Offer – Generation
The
Energy Bid will be used by the simulator to determine the historical dispatch
just as the IESO uses it to determine today’s current dispatch. Your bid is
your desire consume certain quantities of electricity at different prices
(consume more MW at a low price, and less MW at a higher price), for each of
the 24 hour periods. The structure is show below;
Structure: <HOUR_RANGE>, <NERCTAG>,{
(<PRICE>,<QUANTITY>)},{(<RR_QUANTITY>,<RR_UP>,<RR_DOWN)};
|
<HOUR_RANGE> |
An
individual hour, or a range of hours separated by – (dash) |
|
<NERCTAG> |
Not
used. Leave empty (just the
comma) or text will be ignored. |
|
<PRICE> |
The
minimum price willing to be paid for a quantity of energy |
|
<QUANTITY> |
The
quantity of Energy that the price applies |
|
<RR_QUANTITY> |
The
MW quantity for the ramp rate lamination |
|
<RR_UP> |
The
Ramp Rate which the generator can increase (Up) within the quantity range |
|
<RR_DOWN> |
The
Ramp Rate which the generator can decrease (Down) within the quantity range |
|
OR
Ramp Rate: |
The
Operating Reserve Ramp Rate applies to all hours of the bids and is required
when providing any Operating Reserve offers. It is the ramp rate which the
generator can increase its output if called upon to deliver (activate)
any class of Operating Reserve. |
|
Example Energy Offer: |
OR
Ramp Rate: 10.0 |
|
1-7,,{(0,0),(0,20),(25,50)},{(50,3.0,10.0)}; |
|
Operating Reserve Offer Body
Dispatchable
Generators may offer their unutilized generation capability into the Operating
Reserve Market (OR Market).
Generators have options of offering the unutilized capacity in any of
the three OR markets:
· 10 Minute Spinning OR
·
10 Minute Non-Spinning OR
·
30 Minute OR
As
with the DSO, the Simulator will constrain the amount of OR considered in each
class based on the OR Ramp Rate provided in the Energy Bid Set, and based on
the previous dispatch and its proximity to the Reserve Loading Point.
Structure:
<HOUR_RANGE>, {
(<PRICE>,<QUANTITY>),(<PRICE>,<QUANTITY>) }
,<RESERVE_LOADING_POINT>;
|
<HOUR_RANGE> |
An
individual hour, or a range of hours separated by – (dash) |
|
<PRICE> |
The
minimum price willing to be paid for a quantity of operating reserve |
|
<QUANTITY> |
The
quantity of operating reserve which the price applies |
|
<RESERVE_LOADING_POINT> |
Used
in 10S (must be 0.1 or higher) and 30 (must be 0.0 or higher), ignored in 10N (must be 0.0).
It is defined as the
minimum generation level where the maximum OR can be provided. |
|
Example OR Offer: |
1-7,{(1,0),(1,30)},20; |
If
either OR Offers are provided, the simulator will use the offer along with historical
data to determine how your facility would have been dispatched and what your
payments would have been. Being
Dispatched for Operating Reserve is different than being Activated. Being
Dispatched requires you to be prepared to reduce your load, while being
Activated means you are instructed to execute the reduction. The simulator can
determine Dispatch information but it cannot report on when you would have been
Activated.
Output Comparison
The
Output Comparison panel is used for assessing the output of the Simulator
against actual historical generator output data, which is collected in the
Sygration data warehouse. You may use this option to compare the output of the simulator
against your own generator's historical output, using the same bids used when you were
previously dispatched. You may also use this option to determine how a competing generator
is bidding into the market, by developing and testing Energy and Operating Reserve offers
and comparing the simulator output against the target generator.
| Select a Generator | Use the pull-down menu to select a Generator whose historical data will be compared against the results of the Simulator. All data is maintained in the Sygration Data Warehouse – there is no need to upload any further generator data. Note: You must also select the Historical Generator Data checkbox in the Report Contents area for the Simulator to run the comparison. |
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| Adjust for Actual Capability | This option will cause the Simulator to cap the upper limit of the energy offer in order to match that of the historical generator data. This is used to capture generator derating conditions that would otherwise resultin in a variance between the simulation and the historical output. While this will aid in having your simulator bids more quickly match that used by the generator, you should monitor the GEN-CAP column closely as it may also reflect the normal lowering of total energy offered for certain hours. |
| Interpolate Hourly Output | The IESO dispatch and Simulator function using 5-minute data, while the historical generator data is on an hourly resolution, based on the average for that hour. This option allows the Simulator to interpolate the hourly output into separate 5-minute output values, providing a more acurate comparison. |
| Initialize Simulator Output | This option allows will cause the Simulator to set the first Dispatch Quantity for Energy to that of the first value of the historical generator output. This improves the accuracy of the initial simulator results as the simulation would otherwise have to start at 0MW and would have to ramp-up to the unconstrained energy output. |
Copyright © 2005 Sygration