PowerStream: Penetanguishene MicrogridProject

SHUVO CHOWDHURY

Smart Grid Project Lead

19th January, 2017

Who are we

• Leading energy company that is also the 2nd largest municipally-owned LDC in Ontario.

• Provides service to more than 380,000 customersresiding or owning a business in 15 communities

• Employs over 500 employees.

• Has more than $1.3 billion in assets.

• Jointly owned by the municipalities of Barrie, Markham and Vaughan.

• Currently undergoing a merger with three other utilities in the Greater Toronto Hamilton Area

C&I Microgrid (Right Here!)

• Low Voltage

• 3 Phase• Multiple Energy Assets

Residential• Low Voltage

• Split phase 120/240V

• Multiple Energy Assets

Grid Scale Microgrid

• Distribution Voltage

• 3 Phase• Multiple Energy Assets

Scaling Up

Scaling Down

What we do

The Why

Build a new line

and/or additional

redundancies

Try something

New: a Microgrid

Project Goals

• Most outages at Penetanguishene are under 10 minutes; Eliminate these outages

• Assess the system as a asset deferral strategy

• Develop algorithms for the Microgrid Controller

• Enter the market as a microgrid solutions provider

What we did at Penetanguishene

• 750kVA/500kWh Li-Ion

Battery System

• 5 circuit automatic

switches to facilitate

FDIR

• 1 Step Voltage Regulator

to correct voltage issues

• Advanced Microgrid

Controller (MiDAS)

• Autonomous function &

SCADA integration

Technology

• Samsung SDI Batteries (Li-Ion)

• Individual Cell Monitoring

• Automatic Voltage Equalization

• Rack Level BMS

• Master BMS

• Up to 2C discharge/charge

• Integral fire suppression and HVAC

Technology

• POSCO ICT Power Conversion System (PCS)

• 750KVA, 4 Quadrant inverter

• IEEE 1547 Compliant

• Integrated Area Level Controller

• 600VDC nominal

• 350VAC nominal

• Integral fire suppression and HVAC

Technology

• Others:

75kV SVR 5 Automatic

Switches

Switchgear,

Transformer, Vacuum

Circuit breakers, etc.

Local Control/Server Room

Project Timeline

• September 2014: PowerStream & Korea Electric Power Corporation Sign an MOU

• Ground Breaking August 28, 2015

• Detailed design complete September 2015

• FAT complete October 2015

• SAT complete April 2016

• Official Launch: 29th June 2016

Project Timeline

MOU Signing: September 2014

Ground Breaking: August 2015

Detailed Design

Factory Acceptance Test (FAT)

250kVA Modules

PCS Control Modules

Loss of grid

PCS Anti-Islanding

Factory Acceptance Test (FAT)

• Conditions tested: UV, OV, OC, UF, OF

• Black Start

• Seamless transfer

• Other equipment included in the FAT:

Fire Suppression and control in the containers

Visit to Samsung SDI battery manufacturing facility

Visit to circuit switch manufacturing facility

Engineering, Construction & Procurement

• Perhaps the most conventional part of the project

• Completed in just under 9 months. Much of it in the winter

Proposed site

Battery Container

Show Room

PCS Container VCB, Transformers, Switchgear & Load Bank

Site after construction

Site Acceptance Test (SAT)

• The longest and most challenging part of the project

• 24 tests in the original plan

• Over 120 tests in the finalized plan

• Over 6 weeks to develop & 2 weeks to execute

Site Acceptance Test (SAT)

20

FDIR : Normal Condition

21

FDIR : Fault & Alarm Occurs

22

FDIR : Fault Detection

23

FDIR : Fault Isolation

24

FDIR : Restoration using backup feeders

25

FDIR : Restoration using backup ESS

What does it do?

What does it do?

What does it do?

What does it do?

Learnings

• It works!

• Still early stages; need to pursue other value propositions

• Extensive EM&V scheduled & ongoing

• Demand data integration was easy; price, not so much

• Surprises: no outage yet!

Follow-up

• What’s next?

– Commercial deployment inside and outside PowerStream service territory

– True islanding test

– Performance analysis

Questions?