1. Load Model Data Tool Development Update
Pavel Etingov, Yuan Liu, Yu Zhang
Pacific Northwest National Laboratory
PNNL-SA

2. PNNL Load Model Data Tool
LMDT 1.0 was released under an open source license in 2013
LMDT was developed in collaboration with BPA and WECC LMTF
Development was funded by DOE ARRA
Stand-alone MS Windows application
LMDT automates the process of the load composite model data preparation
LMDT supports GE PSLF and Siemens PSSE formats 2

3. Composite Load Model
September 19, 2018

4. LMDT 2 Development is funded by DOE Fully redesigned GUI
Advanced functionality
New visualization capabilities
Database of load models for different climate zones
Generating .dyd and .dyr dynamic records
September 19, 2018

5. LMDT 2 Main GUI
September 19, 2018

6. LMDT 2.1 New version 2.1 is now available
Configurable presets for each climate zone:
Modify and store in the configuration file a load composition
Modify and store in the configuration file a feeder configuration
September 19, 2018

7. XML configuration file
Multiple presets with different configurations
Individual configuration for each climate zone including:
Feeders
Commercial load
Residential load
September 19, 2018

8. Feeder configuration Residential Commercial Mixed Rural/agricultural
September 19, 2018

9. Commercial load configuration
September 19, 2018

10. Residential load configuration
September 19, 2018

11. Load Model Database Different load type Climate zones Operating hours
Commercial
Residential
Industrial
Agricultural
Data
Service
Climate zones
Operating hours
Seasons
September 19, 2018

12. Composite load model and Dynamic records
Input
Composite Load Model
Motor Data
Power Flow Data
Output
.dyd record
.dyr record
New features:
Error log
Search within an output file
September 19, 2018

13. Model validation
PNNL set up a simple two-bus system to compare simulated PQ of composite load model and measured PQ in response to played-in voltage and frequency.
Developed EPCL code to run play-in events in batch mode.
Pre-process original play-in event data file.
Extract initial bus voltage and load PQ measurements from play-in data file.
Adjust and re-solve power flow raw file.
Run dynamic simulations with played-in voltages and frequencies at the load terminal.
Working on dynamically selecting composite load .dyd record based on seasons and operating hours of the recorded play-in events.
September 19, 2018

14. Play-in Event Data Conversion
P, Q G
Cmpldw f
Z = j pu
PSLF readable csv data file
Original csv event data file obtained from LBNL
DataProcess.py
September 19, 2018

15. Files Generated by Python Script
Original csv pu MW
MVAr
DataProcess.py
Re-formatted csv
Initial V, P, Q are extracted from original csv files, and are used to adjust power flow data
“EventFileList.txt” Collects the names of reformatted play-in data files.
EPCL accesses “EventFileList.txt” to obtain file names and pass them to string array.
With the file names identified, EPCL can open and import play-in data file by file.
September 19, 2018

16. Flow Chart of Entire Process
Run “DataProcess.py”
EventFileList.txt
Reformatted Play-in csv files
InitialVPQ.txt
Event(i)
EPCL
Open and solve power flow file
V0, P0, Q0
Record
Date &
Hour
EPCL
LMDT generates Cmpldw .dyd
Load dynamic data file
i=i+1
Volt. and freq.
String array
*eventfile[N]
Import play-in csv file
Run dynamic simulation
September 19, 2018
Output

17. Some Results Climate Zone: DSW Season: Winter day Hour Index = 21
September 19, 2018

18. LMDT web page https://svn.pnl.gov/LoadTool Pavel.Etingov@pnnl.gov
September 19, 2018