Copyright © 2014. Quanta Technology, LLC Confidential & Proprietary
Smart Solutions, Practical Results
Experience with Testing of PDAC System at NYISO Using PMU Simulator
Dino Lelic, Quanta Technology LLC Dejan Sobajic, NYISO
JSIS Meeting Tempe, Arizona
January 23, 2014
Introduction NYISO RFP for PDAC (Phasor Data Acquisition and
Control) System had almost 1400 requirements
It was not possible to test all the requirements without a proper simulation tools
QT developed a tool, PMU Simulator to address this kind of problem
PMU Simulator has been applied at NYISO and PJM projects during integration and testing of their systems
This tool can encompass following components: Input data generation
Simulation of PMU & PDC operation
Data processing and analysis
Communication between PMUs – PDCs, PDC – PDC, PDC – Applications
Use of the PMU Simulator
Verify that the applications perform as required per design: Basic functionality (event detection, alarm, warning, control
functions, accuracy)
Verify that applications meet performance requirements Response time Throughput Limits Stability Performance monitoring/reporting
Use of the PMU Simulator Verify Data quality management capability
Detect bad data
Loss of data from one or several PMUs
Loss of signals in a PMU
Stale (non-refreshing data)
Inconsistent data, data rates and latencies
Wrong time stamp
Combination of issues above
Application to the NYISO PDAC Testing Used three data sources:
Off-the-shelf system simulation software (PSS/e, PSLF) Field captured data Manually created data
The simulator generated phasors for all existing and newly installed PMUs
Two types of simulations to support system testing: Clean data testing with PSS/E and a QT proprietary C37.118
data converter to generate phasor data Testing with simulated data errors (time delay, miscalibration,
configuration error, etc.) added to the clean streams to test how the system handles the errors
Testing with openPDC
Testing With ePDC
Application Testing Tool Block Diagram
AppTester
PMU/PDC Data Stream
Generator
One or Multiple PMU/PDC Data Streams
Test Case / Scenarios Data
File Library
Sub-system with application under test
PDC
Visualization
Application under test
Application Database
Test case data file
Simulator domain PDAC System domain
PDAC Site Acceptance Testing With Live PMU Data from TOs
• As live PMU data becomes available, it is streamed from TO’s to NYISO ePDC
• Applications tested, but without events only steady state features could be tested
PDAC Site Acceptance Testing With PMU Simulator
Alarm testing
Many features could not be tested without the PMU System Simulator:
• ePDC & RTDMS performance • LIFO • Alarms • Data quality (CRC, dropped signal, time stamp error...)
ePDC testing
PDAC Site Acceptance Testing With PMU Simulator – LIFO
LIFO – modes, frequency, energy of modes
Identification of Modes and Damping
Angle oscillation event created by simulator
Conclusion
PMU Simulator has proven to be invaluable tool for testing and validation of PDAC system during it development and integration
Especially was useful to test application for the events that don’t occur in normal operation mode
Very useful for testing applications with ‘what if’ scenarios that involve adding or removing PMUs from the system
Q & A
