DSATools™ Add-On Module | UDM EDITOR Custom Power System Modeling

UDM Editor can be used to create all types of UDM supported by TSAT, SSAT, and VSAT, including:

• Generator controls, such as excited, governor, PSS, over-excitation limiter, and under-excitation limiter.
• Renewable generator models and controls, including wind turbines with all four main types of technologies, PV, storage, etc.
• FACTS, such as SVC, STATCOM, TCSC, SMES, UPFC, etc.
• HVDC (LCC and VSC) and controls, including converter-based FACTS devices.
• Relay and special protection schemes (SPS).

Typical models are available for each model type in the model template library to provide starting point for building a custom model.

A UDM is created using a function block and connectivity based approach. UDM Editor provides a comprehensive library of logic functions, math functions, control functions, input signals, and physical device models for use in building UDMs. The user can also supply custom function blocks written in C/C++ in form of DLL to be included in a UDM as Dynamically Linked Block (DLB).

The UDM template feature allows the easy creation and management of large set of user-defined models.

Once a UDM is created, validation can be performed to ensure that the model meets the requirements.

• Full graphical interface to build models
• Function block and connectivity based UDM approach
• Supports a wide range of dynamic models
• Comprehensive library of function blocks, input signals, and physical device models
• Support of user written function blocks
• UDM template for managing UDM library
• Models are accepted directly by TSAT, SSAT, and VSAT with no additional compilation

• Full graphical interface with drag-&-drop approach to create UDM.
• Power system components can be identified using bus numbers, bus names, or equipment names.
• UDM validation functions.
• Connection with TSAT binary result file to plot simulation results from specified blocks.
• Automatically create model block diagram for existing UDM.
• Text, edit, layout, and other graphics arrangement tools.
• Extensive on-line help facility on UDM creation.
• Runs on MS Windows 7/10/server 2012 R2/server 2016.

• Input signals
  • Local signals (model dependent): quantities from buses, generators, and branches
  • Remote signals: quantities from buses generators, branches, interfaces, shunts, loads, and converters
  • Connecting signal: PSS, OEL, UEL
  • Other: reference value, time, constant, base MVA and frequency, special signals for SPS
• Arithmetic functions
  • Summation/multiplication/division
  • Trigonometric functions
  • Exponential/logarithm
  • Absolute value
  • Power
  • Maximum/minimum
  • Logical operations
• Control functions
  • PID
  • Lead/lag with non-windup limit linear state space model 
  • Time switch
  • Logical controlled switch
  • Non-linear function (lookup table)
  • Transfer function (no limit)
  • Digital controller
  • A/D converter
  • Hysteresis
  • Timer
  • Counter
  • Deadband
  • Rank
  • Group
  • Lookup table
  • Feedback loop
• Physical device models
  • DC, AC, and static exciter
  • Hydraulic, steam, gas, wind turbine
  • Thyristor-controlled reactor/capacitor
  • Thyristor-controlled braking resistor
  • Thyristor-switched reactor/capacitor
  • Thyristor-controlled series compensator
  • Generic D, Q current injection for asynchronous devices
• Switching functions for relay/SPS
  • Trip branch, generator, load, motor, SVC, or shunt
  • Reconnect/Add/Modify branch
  • Outage bus
  • Block converter