Control Room Solutions Task Team

Contacts

Our mission

The NASPI Control Room Solution Task Team’s mission is to work collectively with other NASPI task teams to advance the use of real-time synchrophasor applications for the purpose of improving control room operations and grid resilience and reliability. The CRSTT will use its experience and regional diversity to provide advice, direction, support and guidance to NASPI stakeholders and other organizations involved in the development and implementation of real-time synchrophasor applications.

CRSTT Work Plan, updated April 2021 (PDF).
Use case document; Mis-operations with PMU Data Summary Table (PDF).

Additional videos:
NASPI Oscillation Detection and Voltage Stability Workshop, Houston, TX, October 22, 2014; NASPI's YouTube Channel.
List of PMU versus SCADA Video Events Summary Videos (Updated April 2018, rev6).

Videos

Title Description Date
Video 10

Illustration 1 of Phase Angle Alarming Using Synchrophasor Data

 Mar 21 2017
Video 9

Please be patient with the download, the video is very large. This video captures the actual synchronization of a large generator to the electric grid. The windows in the visualization tool capture frequency, output power, voltage angle, and voltage magnitude of the generator and at a reference point on the electric grid.

 Mar 21 2017
Video 8

A 230kV fault followed by a loss of a large generation plant caused system frequency to drop approximately 72mHz momentarily, while having an impact on nearby system voltages and online generators

 Mar 20 2017
Video 7

Wind farm Oscillation Detection and Mitigation using Synchrophasor Technology

 Mar 20 2017
Video 6

Real Power and voltage oscillations observed following the loss of a large generator. A large unit trip via relaying in the West caused system frequency to drop to 59.873 Hz momentarily and returned to normal in seven minutes.  Post trip oscillations in voltage and power flow were observed on data from an area PMU.

 Mar 20 2017

Documents

Title Description Date
EA004 - Using Synchrophasor Data to Identify System Voltage Oscillations

We have observed significant sustained voltage oscillations on the ATC transmission system that were not visible in our SCADA data. These oscillations are normally in the 0.6 – 0.75 Hz range and are lightly damped. They can persist for weeks and then disappear for weeks and even months.

 Jan 29 2018
EA003 - Using Synchrophasor Data to Identify a Failing Potential Transformer

An ATC Operations Engineer was using synchrophasor data to review fault operations and stumbled across the odd voltage signature shown below from a PMU monitoring one of our 69 Kv substations. One of the three voltage phases would “drift” away from the other two phase voltages and then eventually jump back to normal. The behavior was not observed on the voltage data from PMUs at nearby stations so it was determined this was not a system problem.

 Jan 29 2018
EA002 - Using Synchrophasor Data to Analyze Concurrent Fault Events

A 69Kv line trip occurred during a storm where the fault was cleared properly by the line protective equipment.  Within seconds an area generator trip was observed.  When comparing the synchrophasor data it was clear that the unit trip occurred within cycles of the transmission fault indicating the two events were most likely related.

 Oct 19 2017
EA001 - Using Synchrophasor Data to Analyze Fault Event Causes

A transmission fault was cleared properly by the appropriate line protection equipment.  When reviewing the synchrophasor voltage data for the fault from a nearby station (see Figure 1 below) it became obvious that the initiating event for the transmission system fault was most likely on the distribution system.  Several multi-phase events were observed where the first of these eventually migrated to a phase to ground transmission fault.

 Oct 19 2017
Use Case: GEN-03 – Automatic Voltage Regulator (AVR) Malfunction

NYISO System Operators observed transient voltage oscillations in Supervisory Control and Data Acquisition (SCADA) data. The oscillations lasted for three minutes and appeared on many of the western New York 345 kV busses.

 Jul 25 2017