IEEE Power & Energy Magazine - September/October 2015 - 39

Recognizing the benefits of synchronized phasor measurements,
ERCOT began a project in 2008 to implement this technology in
its operations and planning processes.

The Synchrophasor Measurement Nodal Operating Guide
Revision Request (NOGRR) #142 was recently vetted by the
ERCOT stakeholder process. The binding language became
effective in June 2015 and requires PMU installations in
conjunction with certain new facility installations placed
into service by ERCOT TOs and GOs.

Communications Handbook, and draft Nodal Operating Guide language, which is binding language within
ERCOT. The assessment answers the key questions
posed by the ROS and summarizes the status of this
technology within ERCOT. The impact of related NERC
reliability standards and Federal Energy Regulatory
Commission rulings was also considered. The communications handbook provides ERCOT stakeholders with
technical details about how to record and transmit synchrophasor data to ERCOT. The binding language outlines requirements for the installation of PMUs by TOs
and GOs. Each of these documents was published and
presented to the ERCOT ROS for its consideration prior
to the end of 2014.

Use of PMUs in Operations at the Lower
Colorado River Authority Transmission
Services Corporation
The Lower Colorado River Authority Transmission Services
Corporation (LCRA TSC) is a transmission operator in the
ERCOT region that operates 5,150 mi of transmission and
380 substations with 3.1 GW of connected wind capacity and

TSP2 LAN
PMU

PMU
Local
Storage

TSP1 LAN
PMU

PMU

Remote
Client

PDC

TSP3 LAN
PMU
PDC

PDC

PMU

PMU

Remote
Client

ERCOT
WAN

Local Storage

PMU

Local Storage

Remote
Client

ERCOT LAN
PDC
ISG
(External)

ERCOT PMU
Communication
Architecture

Phasor Archiver-Full PDC Data
Stream on Database

ERCOT
Users
Server
ISG
(Internal)

Phasor Archiver
(Several Days of
Streaming Data)
Event Archiver
Database

figure 2. The ERCOT PMU communication network.
september/october 2015

ieee power & energy magazine

39



Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - September/October 2015

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IEEE Power & Energy Magazine - September/October 2015 - Cover3
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