OPAL-RT RT14 Conference: Power System Monitoring and Operator Training

The 7th International Conferenceon Real-Time Simulation TechnologiesMontreal | 9-12 June, 2014

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Frank Carrera, Vahid Jalili-MarandiElectric Power Group, OPAL-RT TECHNOLOGIES

[email protected], [email protected]

Power System Monitoring and Operator Training:

ePHASORsim and RTDMS

mailto:[email protected]

mailto:[email protected]


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• Introduction

• EPG Presentation

• Demo

• Applications

• More about ePHASORsim

• Questions and Answers

Agenda


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About Electric Power Group Started in 2000 by experienced team of electric utility executives

Focus area is power grid technologies and solutions

Pioneered research and development in synchrophasor technology

Leading phasor adoption - founding member of NASPI (EIPP), CERTS and phasor research for DOE/CEC

Recognized as industry pioneer – granted 3 patents for Real Time Performance Monitoring, Wide-Area Real-Time Monitoring and Visualization System

Customers include major utilities and ISO’s in N. America, including AEP , Ameren, APS, BPA, CAISO, Consolidated Edison, Dominion Power, Duke Energy, SCE, ONCOR, LADWP, SRP, ERCOT, NYISO, PJM, MISO, NYPA, Duke Energy, NASPI (DOE supported wide-area monitoring system)

HQ in Pasadena, CA, USA


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EPG Synchrophasor Solutions at Work

New York ISO


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EPG Synchrophasor Product Portfolio

EPG

Phasor Technolo

gy Solutions

Data Flow

Security

Real Time Grid Apps

StorageSystem

Integration

Analytics

Simulation

Training

Phasor Data ConcentratorsData Gateway

Off Line Analytics

Active Directory

Data Validation & Conditioning

RxM

PI, eDNAAdapters


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REAL TIME DYNAMICS MONITORING SYSTEM (RTDMS®)

A SynchroPhasor based software system (platform + applications)

for real time wide area visualization, situational awareness, monitoring and analysis

of the power system

®Electric Power Group. Built upon GRID-3P platform, US Patent 7,233,843, US Patent 8,060259, and US Patent 8,401,710. All rights reserved.


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Key Features of RTDMS

Customizable Displays Across Multiple Monitors

Automatic

Event

Analyzer

Wide-Area

Situational

Awareness

Advanced

Calculation

Engine: Voltage and Angle

Sensitivies

Mode Metering

Oscillation

Detection

Real-Time

Monitoring(High Speed

Trend Charts)

RTDMS Display of Wide-Area Situational Awareness

Dashboard

Phase Angle

& Grid Stress

Monitoring

Geospatial

Based

Visualization


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• Execute a Simulated Case in ePHASORsim• Data is generated in the form of simulated PMU’s.• Data from simulated PMU’s is sent to ePDC (EPG’s enhanced Phasor Data

Concentrator) using multiple C37.118 streams of data• ePDC synchronizes the data and sends unified C37.118 stream to RTDMS• RTDMS receives the data, calculates, and alarms on

• Power (MW)• System Frequency• Voltage and Angle Sensitivities• Mode Meters• Oscillations• Etc.

• Monitor results in RTDMS 2012 Visualization Client Application

Visualizing Simulations


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Visualizing Simulations using ePHASORsim and RTDMS

Simulated Phasors Using ePHASORsim

Synchronize and forward the datausing ePDC

Visualization of Simulated Phasor Datausing RTDMS 2012 Visualization Client

Operator-In-Loop Runtime Controls

Key Benefits

Train operators

Promote understanding of grid stress

Visualize what-if scenarios

Test / validate operator actions


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www.electricpowergroup.com

enhanced PDC Real Time

Dynamics

Monitoring System

Alarming

Phasor Grid

Dynamics Analyzer


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Phasor Simulator for Operator Training (PSOT)

ePHASORsim Model• Real-time• 10 ms time-step• Linux OS

ePHASORsimSimulator

Synchrophasor Application• Angle difference • P and Q• Frequency• Sensitivity analysis• Angular separation• Visualization, alarm,

notification• …

RTDMSTools

C3

7.1

18

Pro

toco

l


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Show Time… Live Demo!


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Why do we need PSOT?

Source: Wikipedia

Some Catastrophic Failures…


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WAM Equipment…Frequency Disturbance Recorder (FDR)

In 2006In 2014


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PMUs in North America

Source: NASPI

> 80 in EI> 130 in WECC

• Speed: faster measurements than conventional SCADA technology

Source: U.S. Energy Information Administration

• Synchronization: using GPS clock to have a wide-area visibility


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RTDMS - Phasor Real Time Monitoring Synchrophasor Integration

• Wide visibility of the system

• Dynamic system identification

• Wide area oscillation detection

• Phasor based state estimation

• Automatic feedback control

• Optimize placement of PMUs

Applications of PSOT


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Wide-Area Measurement:

• World-Wide Frequency Map

• US Frequency Gradient Map

• Online Oscillation Mode and Damping Estimation

http://powerit.utk.edu/worldmap/

http://fnetpublic.utk.edu/gradientmap.html

http://fnettest.eecs.utk.edu/693.html


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ePHASORsim: Solution for…

Real-time transient stability simulation


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Real-time transient stability simulator• Large-scale power systems • Transmission, distribution and generation

Phasor domain solution • Nominal frequency• Positive sequence (balanced systems)• 3-phase (unbalanced systems)• Time-step in the range of few milliseconds

What is ePHASORsim?

00 )(

),,(0

),,(

xtx

tVxg

tVxfx

Machines, Controllers, Dynamics

Network side algebraic equations

+

Discretization of

differential equations

Solving linear algebraic

equations

Explicit Euler

LU Factorization


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Real-time Performance

Case 1 Case 2 Case 3

Number of components

Buses 4992 9984 19968

Generators 1280 2560 5120

Controllers 2304 4610 9216

Others 9144 18368 36820

Computation time (ms)

Normal 1.62 3.28 6.68

Disturbance 3.49 7.43 16.61

Overruns NO NO YES

Simulation time: 10s, time-step: 10ms

Number of CPU cores: 1


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30,000 nodes with 72 partitions

Nb of CPU 1 2 3 4 5 6 7 8 9 10

Computation time (ms) 53.78 30.85 22.65 19.04 16.99 14.87 13.91 12.83 12.22 11.99

𝑆 =𝑇𝑐𝑜𝑚𝑝_1𝑐𝑜𝑟𝑒

𝑇𝑐𝑜𝑚𝑝_𝑚𝐶𝑜𝑟𝑒


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Questions…?

Software

OPAL-RT RT14 Conference: Power System Monitoring and Operator Training