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From Imagination to Real-Time

ePHASORsim

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ePHASORsim presentation

– Introduction

– Features

– Applications

– Timeline and future developments

Live demonstration

– The Québec transmission system

Agenda

Real-time Transient Stability Simulator

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Power system under study Nominal frequency

Positive sequence transmission

3-phase distribution

Time-step Fixed (typically few ms)

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Cover the complete spectrum of power system analysis & studies

ePOWERgrid Product Family

ePHASORsimReal-Time Transient

Stability Simulator10 ms time step

NEW

HYPERsimLarge Scale Power System

Simulation for Utilities & Manufacturers10 µs to 100 µs time step

NEW

eFPGAsimPower Electronics Simulation on FPGA1 µs to 100 ns time step

NEW

1 s(1 Hz)

10,000

5000

2500

1000

100

10

0

10 ms(100 Hz)

50 µs(20 KHz)

10 µs(100 KHz)

1µs(1 MHz)

100 ns(10 MHz)

10 ns(100 MHz)

20,000

Period (frequency) of transient phenomena simulated

Number of

Nodes

eMEGAsimPower System & Power Electronics Simulation

Based on Matlab/Simulink and SimPowerSystem7 µs to 100 µs time step

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Applications of ePHASORsim

ePHASORsimfor Large-Scale Power Systems

UDM Simulation

Hardware-In-the-Loop

Parallel Processing

Distribution Systems

Test SCADA

Systems

Operator Training

Simulator

Transient Stability

Real-time Simulation

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Existing Tools

Offline Phasor Tools time-step: millisecond

PSS/e

ETAP

EUROSTAG

CYME

Real-time Simulatorstime-step: microsecond

eMEGAsim

Hypersim

RTDS

…

ePHASORsim

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Data Entry for ePHASORsim

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ePHASORsim vs SPS Phasor mode

Features ePHASORsim SPS with Phasor option

Circuit editor Excel spreadsheet or PSS/e v.32 files SPS circuit editor

Interface with external devices Using Simulink Using Simulink

Transmission system Yes Yes

Unbalanced system Yes Yes

Supported components Fundamental models A comprehensive library

Largest system size tested 20k bus, 5k machine 200bus, 28 machine

Compilation time with eMEGAsim for largest system

45 s 32m:42s

Load time with eMEGAsim less than 5 seconds few seconds

Number of CPU cores 1 9

Just opening the model in Matlab (offline)

Normal 4 mins

Facility to split the system Not implemented yet, but there is no limitation

There must be long lines, or a transformer with stub-line. It needs

compensation. SSN blocks do not work in SPS Phasor mode

Manual change of parameters during simulation

All parameters are accessible There are limitations

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Performance of ePHASORsim

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

Number of CPU cores: 1

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

1. Large-scale power systems in Real-time

• 10,000 buses on-fly

2. Open and scalable hardware platform

• Integrated with a chassis equipped with FPGA and I/Os

• Interfaced with communication protocols such as IEC61850,

DNP3 (+-10ms), C37.118, OPC (+-100ms)

3. Test automation platform

• Perform test automation using Python scripts

• Use ScopeView to record, display and analyze results

• Interfaced with LabView to implement realistic control panels

• Modify parameters while the simulation is running

Features

4. Third-party connectivity

• Interfaced with Simulink, SimPowerSystems and SimScape to

enable users to develop their own load, control and protection

models

• Interface with the Excel™ spreadsheet and with PTI’s PSS/e to

import the network data files

Features

ePHASORsim with DNP3 and IOs

ePHASORsim

ePHASORsim and EMT

0 (No External PSS)

1 (External PSS)0 (UDM PSS)

1 (SPS PSS)

1

Out1

Line Out/In

Load Out/In

Bus Fault

Vref

M

area1

2(s+1)

(s+2)

Zero-Pole1

s

(s+0.10)

Zero-Pole

speed

Goto2

ExternalDevice PSSmodel

In Vstab

GenericPower System Stabilizer

2

Gain

speed

ExternalDevice

ExternalDevice

PSSmodel

0

External PSS Type

1

External PSS

0

Constant2

0

Constant1

<speed>

ePHASORsim and UDM with SPS blocks

ePHASORsim with PMUs and PDC

Live demo:

Quebec transmission system

Size of system

Bus 38

Machine 7

Exciter 7

Stabilizer 7

Turbine-governor 7

Line 19

Transformer 9

Series Capacitor 13

PMU 10

Timeline

2010

Project started

2011

First demo (HQ), simulation for

operator training

Distribution system components added

1st client delivery (GE-DTE)

2012

2013

API for externally coded modules

Standalone ePHASORsim,

integrated with new I/O server2014

Parallel ePHASORsim

New components

The future

• Several topics have been identified as important, but

require further analysis:

– GUI

– Import from / export to other formats (e.g. CIM)

– Interface with other software (e.g. ETAP)

– HYPERSIM integration

– Mixed-mode simulations (EMT + Phasor)

Conclusion

• ePHASORsim is a phasor-mode, real-time simulator of

large-scale transmission and distribution systems

• high performance

• flexible

• extensible

• We demonstrated the advantages of ePHASORsim in

various scenarios:

– External control prototyping

– Test SCADA system

– Hybrid simulation

– and more

ePHASORsim with PMUs and PDC

Live demo:

Quebec transmission system

Size of system

Bus 38

Machine 7

Exciter 7

Stabilizer 7

Turbine-governor 7

Line 19

Transformer 9

Series Capacitor 13

PMU 10

Models

Generator, Voltage source

Load (ZIP)

Transmission line

Excitation system

Power System Stabilizer

Turbine-Governor

Transformer (with Tap-Changer)

Reactor

Capacitor banks

External Simulink Blocks

(UDM)

External SPS Controller Blocks

ePHASORsim Library

Events and Actions

Balanced and unbalanced faults

Open-connector conditions

Transmission line trip

Faults on transmission line

section

Generator outage

Load shedding/restoration

Tap-changer adjustment

AVR adjustment

Reclosing commands

Loss of excitation

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