Case study for CORAL BAY energy modelling for a WIND DIESEL and stabilization hybrid system

© ABB Group September 20, 2014 | Slide 1

Case Study for Coral BayEnergy Modelling for a Wind / Diesel and Stabilization Hybrid System

Microgrid Deployment Workshop Fall 2014: Juergen Zimmermann – ABB Microgrid Solutions

A global leader in power and automation technologiesLeading market positions in main businesses

~150,000employees

Present

in

countries+100

Formed

in

1988merger of Swiss (BBC, 1891)

and Swedish (ASEA, 1883)

engineering companies

In revenue

(2013)

billion42$


Renewable energyKey growth driver for both power and automation


Grids powered by fossil-fuel and renewable energyMicrogrids operating on and off-grid

| Slide 4© ABB Group

Diesel

generation

Wind

power

Solar power

Residential

loads

Industrial loads

ABB Australia Global CoC for Microgrids located in Darwin

* Headquarters

Lidcombe, NSW

Located at

over 24

sites across

Australia


Northern

Territory

Western

Australia

Queensland

South

Australia

New South

Wales

Victoria

Tasmania

Malaga, WA

Henderson, WA

Lilydale, Vic

Moorebank, NSW *

Eagle Farm, Qld

Darwin, NT

Brisbane, Qld

Thebarton, SA

Notting Hill, Vic

Perth, WASydney, NSW

ACT

Darra, Qld

Kewdale, WA

Truganina, Vic

Norlane, Vic

Coral Bay

Wind/Diesel

reference site

Case Study Coral BayWind/Diesel/Flywheel System, Australia

Key objectives

Maximise windfarm output

Maintain operating limits of diesel plant

Reliable and stable power supply

Winddfarm and diesel in offgrid system

In operation since August 2007

45% of energy supplied from wind

The power system consists of

7 x 320kW Low Load Diesels

3 x 200kW Vergnet tilt-up wind turbines

1 x PowerStore flywheel (500kW)

© ABB Group

September 20, 2014 | Slide 6

The Coral Bay Design Process

© ABB Group

Microgrid Value Chain

© ABB Group

September 20,

2014

| Slide 7© ABB Group

September 20,

2014

Concept Feasibility StudyDetailed

EngineeringSupply

Installation&

Commissioning

Service & Optimisation

| Slide 7

ABB

FOYER

Spreadsheet Energyflow Loadflow

Stability

Protection

ABB

Energyflow

Optimized

Tuning &

Parameters

PowerStore

M+ Control

Solar Inverters

Transformers

Switchgear

Renewable Energy in MicrogridsThe goal is NOT 100% energy contribution

Source: HOMER ENERGY Newsletter 06-2013

Need for Integration Technology

Annual Renewable Energy Contribution


Pre/Feasibility PhaseHOMER Energy Flow Simulation

© ABB Group

Inherent volatility of renewable energy can compromise grid stability

The renewable energy integration solution must address requirements traditionally fulfilled by diesel generation (base load)

Frequency and voltage control

Sufficient spinning reserve

Sufficient active and reactive power supply

Peak shaving and load levelling

Load sharing between generators

Fault current provision

Renewable energy generation capacity should be sized to maximize ROI and fuel savings

Renewable Energy in MicrogridsStabilising renewable power output fluctuations

(ROI: Return on investment)


Detailed Engineering PhaseCoral Bay – PowerFactory Model Verification

© ABB Group

Supply Phase: Microgrid Plus System

Networked Optimization & Control Platform

Retrofit to any existing diesel/gas plant

Integrate generators and loads


Uses simple non proprietary Interface

Configuration by Power System Engineers

MGC600-G controller

Supply Phase: PowerStore using Flywheel or Battery

Microgrid Stabilising System fast

absorb inject


Features

Grid Stabilising

Scalable & Modular

Frequency Control

Introducing

SYNTHETIC INERTIA

Voltage Control

Fault ride through

Grid forming

1.5MW in 40ft container

Microgrid technology solutionsPowerStore – Grid Stabilising System

18 MWs flywheelInverters 100– 1,500 kVA

MG

440Vac

60-120Hz

440Vac

50/60Hz

Reactive

Power

Real

Power

Real

Power

Fixed

Frequency

Variable

Frequency

2.9T

1,800 -

3,600 RPM

Virtual

GeneratorFlywheel

Inverter


1 MWhr Li Ion Battery

Real

Power

Battery

System

Coral Bay Operating ResultsHigh Penetration Wind/Diesel/Flywheel System

© ABB Group

September 20, 2014 | Slide 15

– 90% –

Wind Penetration – 8hr Graph

900 hours of the year >90%

1/3 of the year more > 80% pen

Load

kWh

Wind Energy

Generated

kWh

Generator

kWh

Real System Data

(10min)

3,110,922 1,457,400 1,971,356

HOMER

(1hr)

3,142,209 1,421,584 1,835,463

Accuracy 101% 97.5% 93.3%

Microgrid Design Optimisation:Coral Bay – HOMER Modelling Verification

© ABB Group

Microgrid Design OptimisationModel Verification – Ensuring Model Accuracy

September 20,

2014

© ABB Group

| Slide 17

Step Load response of a 320 kW Diesel Generator with a 100kW step

Comparison of simulated behaviour vs. real measured data of frequency

Accuracy of >98%, little overshoot due to simplification in Governor Model

50.0046.0042.0038.0034.0030.00 [s]

60.50

60.25

60.00

59.75

59.50

59.25

Case3E_Gen7: Frequency in Hz

GEN7: Simulated Frequency in Hz

50.0046.0042.0038.0034.0030.00 [s]

1.16E+4

1.15E+4

1.14E+4

1.13E+4

1.12E+4

Case3E_Gen7: U1

TX-GEN7: Line-Line Positive-Sequence-Voltage, Magnitude/HV-Side in V

DIg

SIL

EN

T

50Hz

ABB On-grid and off-grid Microgrid TechnologyReference List


Wind/Diesel Power Stations (11)

Country wind /

solar/

other

power/

renewable/

kW

Microgrid Plus

System

PowerStore

Battery or

Flywheel

Peak

renewable

penetration

Customer / Operator Year of start of

operation

Denham AU/WA Wind 4x230/330 x 90% Verve Energy 2004

Rottnest Island AU/WA Wind 600 x 65% Rottnest Island board 2005

Coral Bay AU/WA Wind 3x225 x x 95% Verve Energy 2008

Ross Island Antartica Wind 3x330 x x 60% Meridian Energy 2010

Flores Azores Wind 2x330 x x 100% EDA 2006 & 2010

Graciosa Azores Wind 2x330 x x 60% EDA 2006

Mawson Antartica Wind 2x330 x 90% Australian Antarctica Div 2004

Esperance AU/WA Wind 15x225/600 x 35% Verve Energy 2004

Hopetown AU/WA Wind 600 x 65% Verve Energy 2008

Bremer Bay AU/WA Wind 600 x 65% Verrve Energy 2005

Faial Azores Wind 5x850 x 40% EDA 2013

Solar PV/Diesel Power Stations (2)

Marble Bar AU/WA PV 300 x x 100% Horizon Power 2011

Nullagine AU/WA PV 200 x x 100% Horizon Power 2011

Other Renewable(1)

Legion House, Sydney AU/NSW Syngas 200 x x 100% KLM/Grocon 2013

Other Microgrid Stabilisation and Energy Storage (5+)

Leinster Nickel Mine AU/WA

Peak

Lopping x BHP 2004

Zurich, Battery smoothing

Switzerlan

d PV x EKZ 2012

Long Island, Gas station US/NY - x NYPA 2011

La Gomera, Stabilisation Spain Wind x x Unelco Endessa 2013

La Palma, Stabilsation Spain Wind x REE 2013

On Grid Reference systemSPAusnet Grid Energy Storage, Australia

Customer

SP Ausnet

Key objectives

Low emission solution for grid support

Peak lopping

Power factor correction

Voltage and frequency support

Non network solution

Mobile/transportable

Automatic transition offgrid/ongrid

Operate in grid parallel or islanded

mode

ABB solution

Design, install, commission and 2 year service for

Grid Energy Storage System with diesel generator

The resulting system has

Microgrid Plus System

Diesel Generator 1MW

PowerStore Battery 1MW/1h

Transformer & RMU for 22kV connection

© ABB GroupSeptember 20, 2014 | Slide 19

Technology to install and operate Microgrids with high and

low renewable energy contribution is now proven and

commercially available

Solar/diesel or Wind/diesel systems have lower levilized

cost of energy compared to diesel only

System design tools allow to optimize and engineer the

systems using verified models.

Challenge is to standardise system designs and reduce

cost of integration (CSIRO & ABB are collaborating as part

of a research project to standardise interfaces)

Barriers to increase uptake of renewable energy can be

overcome through partnerships and early engagement


Renewable Energy in Off Grid systems

Summary & Outlook
