AEM

Automated Event Miner

Utilities and ISO's typically retain years of historical synchrophasor data amounting to terabytes of stored information. However as with most archived data it's value can only be attainted if it can be utilized to produce meaningful information that can optimize your future operations. Identifying this exact need, EPG launches Automated Event Miner. A powerful tool which can intelligently mine your data to extract information to assess grid performance such as how many events occured, when and where they occured and how severe were they? Knowing this information can help you identify potential equipment failure and identify weak spots in the grid to guide capital investments and optimize your operating procedures. Some highlights of AEM include:

• AEM has been extentively used to generate reports for CAISO, SPP, ERCOT, GETCO, SRLDC and OETC
• AEM identifies Oscillations, genertion and load trips, faults and low voltage events.
• AEM mreasures anomalies and device calibration issues
• AEM offers data quality assessment summaries
• AEM offers automated report generation
• AEM has a intuitive, easy to use interface which can be used right out of the box

Mining Summary

DATA DURATION: 3 months
PMU's: 50
SIGNALS: 1500
EVENTS IDENTIFIED: 30
- Frequency Events: 16 (threshold: 30 mHz/sec)
- Voltage Events: 10 (thresold: 0.9 and 1.1pu)
- Oscillations: 4 (threshold: 3x standard deviation of RMS Energy)

At Utilities and ISO's

Examples from CAISO, SPP, ERCOT, OETC and GETCO. AEM was used for:

Oscillations
Generation & Load Trips
Faults
Line Trips
Extended Low Voltage Events
Device Calibration Issues
Equipment Failure
Alarm Thresholds

AEM Platform

DESIGN GOAL: AEM is deigned to mine through archived data (days to years) to identify events based on default criteria or user defined minining parameters

EVENT TYPES:
Frequency Excursion - Generator trip, line fault, load loss
Oscillation – Sustained oscillations, forced oscillations, control system issues, low damping
Low Voltage - Faults/Metering Problem, Low Voltage, Delayed Voltage Recovery
Grid Stress: Increased Angle Differences
User-defined events (Composite events, Customized algorithm)

DETAILED OFFLINE ANALYSIS: Integrated with Phasor Grid Dynamics Analyzer (PGDA) for offline data analysis

DATA SOURCES: Flat Files (*.csv, COMTRADE), Databases (MySQL, MSSQL, PI, OpenHistorian)

USER INTERFACE: AEM provides GUIs to setup mining parameters, select mining engines, visualize mining results and generate mining report

REPORTS: Mined events are reported by location, severity, duration and count to provide engineers an event library to select significant events for analysis

AEM Architecture

AEM Reports Example

Download the AEM brochure

Download - 8MB

Contact EPG

251 South Lake Avenue, Suite 300,
Pasadena, CA 91101

1-626-685-2015

1-626-685-2039

contact@electricpowergroup.com

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About EPG

Electric Power Group, LLC (EPG) has been pioneering the development and deployment of synchro-phasor technologies since 2000. Our principals have extensive experience in running and managing utility grids, investigating root causes of major blackouts (WECC 1996, EI 2003), and leveraging this deep domain knowledge to develop industry leading synchrophasor technology applications for wide area real time monitoring, visualization and situational awareness.

The EPG team has extensive hands-on experience with synchrophasor standards, networks, system architecture, deployments and performance analysis through work at EPG for leading ISO's and utilities including PJM, NYISO, ERCOT, CAISO, MISO, BPA, TVA, SCE, AEP, LADWP, SRP, Duke, Dominion, NYPA and other companies.