Archive for November, 2011

New Features and Algorithm Enhancements in PLEXOS 6.202 R11

Date: Nov 17th, 2011


PLEXOS 6.202 R11 introduces a number of new features including new input properties, algorithm enhancements and solution properties.


New input properties:

  • Data File [Shape Distortion]: A new controlling parameters for the quadratic growth method that allows the user to finely control the level of distortion in the ordered load curve shape when the rate of growth of the maximum and energy are different.
  • Diagnostic [Random Number Seed]: Reports all random number seeds generated in the program, which allows the user to use these later to repeat the outage patterns of Generators and Lines.
  • Generator [Load Subtracter]: Defines a profile of values that will be subtracted from the system-wide load duration curve prior to slicing the curve into blocks. For systems with significant amount of renewable generation defining this property on the renewable generators means the slicing of the LDC will be done on the “net load” curve and is potentially more accurate than slicing the raw load curve.
  • Region [Is Strategic]: Toggles on/off gaming algorithms for the Region.
  • Region [Elasticity]: For the Nash-Cournot game this overrides the Competition [Default Elasticity] setting for the Region.
  • Region/Zone [Min Native Capacity Reserves/Min Native Capacity Reserve Margin]: Capacity reserve requirements that must be sourced from capacity inside the Region/Zone without recourse to capacity sharing.
  • Line [Max/Min Capacity Reserves]: Limits for capacity sharing on lines independent of the thermal limits.
  • Financial Contract [Is Physical]: Turns a financial contract into a physical requirement for generation.
  • Emission Generators [Shadow Price Scalar]: A multiplier on the effect of emissions on the incremental cost of generation. Specifically this parameter can be set to zero for generators operating in regions where emissions costs are not reflected in generation cost.
  • Constraint Generators [Ramp * Coefficient]: A number of new Constraint properties that allow ramping and ramp violation terms in generic constraints.
  • Condition Reserves: Reserve terms can now appear in the definition of a Condition.

New solution properties:

  • Fuel [Generation], [Average Heat Rate]: The generation associated with the Fuel and the average heat rate of generation using the Fuel.
  • Emission, Emission Generators, Emission Fuels, Region Emissions [Generation], [Intensity]: The generation associated with the Emission and the average intensity.
  • Region [Shadow Load], [Shadow Generation], Company [Shadow Generation], Company Regions [Shadow Generation]: Additional values from the shadow solution i.e. the solution prior to gaming and uplift.
  • Company Regions [Marginal Cost]: Marginal cost of generation for the Company in the Region.

Algorithmic changes:

  • Nash-Cournot: The Nash-Cournot algorithm is completely revised. The equilibrium is calculated on each block of the LDC in MT Schedule and demand response and mark-ups are fed back into the simulation. Please refer to the Help for more details.
  • Improvements to multi-step LT Plan models.

Graphical User Interface:

  • Property tree now supports multi-select through use of check boxes on the nodes.
  • The Report settings now allow the user to select which properties are written to flat (text) files.


Please refer to the updated product help for more details.

MISO Energy Storage Study Technical Review Group

Date: Tuesday, November 15, 2011

Topics that will be covered include:

Topic Time (eastern) Owner
Introductions, review agenda 10:00 – 10:15 am
PLEXOS results – Phase 1 10:15 – 11:00 am Jordan Bakke
EGEAS results – update 11:00 – 11:15 am David Van Beek
Phase 1 Report DRAFT – discussions 11:15 – 12:00 Rao Konidena, Sandy Fielden (EPRI report writer)
Lunch 12:00 – 12:30 pm
Phase 1 Report DRAFT – discussions (cont’d) 12:30 – 1:45 pm Rao Konidena, Sandy Fielden (EPRI report writer)
Next Steps 1:45 – 2:00 pm

For more information visit MISO’s Event Page.

Visit MISO’s Event Page

An Introduction to Variable Energy Resource Integration Analysis

Visit our publications page to access some of the most highly credited white papers from across the globe, that reference our class-leading software, PLEXOS® for Power Systems. Take the opportunity to learn first-hand the features and capabilities of PLEXOS®, how the model can help improve and benefit the power market industries and why it has become a competitive electric price forecasting tool of choice across the globe. Get various insights into the capabilities of PLEXOS® the power market modelling software and how it can be implemented for use in electric price forecasting, transmission analysis, capacity expansion planning, generation expansion, stochastic and portfolio optimization, emissions, nodal pricing, hydro modelling, wind integration and much more.

Our regional director for the USA, Mr Eric Toolson has published a white paper on the Variable Energy Resource Integration Analysis using the PLEXOS® power market modelling software. The intent of the white paper is to present several current methodologies for establishing the integration reliability and cost for increasing amounts of variable energy resources such as wind and solar PV. The tool that is used for this purpose, PLEXOS® for Power Systems, coupled with a very capable staff, allows for new insights and observations to be analysed and evaluated.

Download the White Paper View other PLEXOS publications

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