Experiences from the Stone Edge Farm Microgrid

Stone Edge Farm Microgrid

Experiences from the

Jorge ElizondoMicrogrid Engineer

[email protected]

COPYRIGHT © 2019 HEILA TECHNOLOGIES INC. – ALL RIGHTS RESERVED

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Controllable Elements• Solar panels with Enphase inverters with soft-curtailment• Aquion battery system• Capstone gas turbine• Simpliphi battery system• Tesla battery system• Hydrogen Electrolyzer with fueling station• Hydrogen fuel-cells system• Motor Load control• Controllable distribution panels• HVAC

Stone Edge Farm (SEF) Microgrid Project

Introduction

Capabilities• Grid-tie mode:

• Peak shaving and load shifting• Frequency and voltage response as a single entity• Decentralized optimization

• Island mode:• Decentralized power sharing• Master swapping

• Seamless islanding / reconnection capabilities• Hydrogen production for a variety of uses

COPYRIGHT © 2019 HEILA TECHNOLOGIES INC. – ALL RIGHTS RESERVED – PRIVILEGED AND CONFIDENTIAL

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Current players rely on customized & one-off control systems, increasing the time & cost of integration

System integration is the primary barrier for Microgrid’s adoption

Complex Systems Rigid StructureNon-Standardized Ecosystem

$

The Challenges


CentralController(Optional)

Comm Network

Utility Operator

Loads

Solar Panels

Wind Turbines

Batteries

Diesel Generators

Gas Turbines

Control complex systems with replicable, energy agnostic intelligent nodes

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Homogenize disparate DERs into a standardized control framework

Add/remove elements seamlessly with a self-adaptable dispatch logic

Our Approach

simplifies integration and operation of DER systems by using a building-block approach


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Technology AgnosticCompatible with most industry standard protocols and interfaces, and capable of interfacing with any vendor

1

2

3Multi-energyEncapsulate the microgrid complexity behind sophisticated and robust algorithms by exploiting analogies

Open-SourceAllow users to safely build new functionalities on top of its existing code.

4CybersecureSeparate asset control from communication channels, to provide a layer of security.

5“Selfish” operationEach asset tries to maximize its own profits, inside a well-designed game-theoretical framework

a Building-block creator®

Our Approach


EthernetSwitch

SEF Communication Network

Central Controller / SCADA

Interaction with utility controller

L

N

E

Transfer Switches

Islanding switchHeat

Exchanger

Gas turbine

AquionBatteries

Inverter

Tesla Batteries

Inverter

H2 Fuel tanks

Electrolyzer

ESS Battery

Inverter

Heila IQ controller

Tertiary

Secondary

Primary

Levels of control

1

2

3

Proposed Control Architecture for microgrids

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Fuel Cells

Inverter

Control Architecture


Utility

DMZ Router

Internet gateway

Internet

Interaction with utility controller

Microgrid

Data / Commands

✓ Achieve system-level goals

✓ Use microgrids as resources for the utility:

Tertiary control

Utility / Market operator

Frequency support Voltage support

Energy Reserve Peak hour power

A B

C D

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Control Architecture


Microgrids controlled as a single entity

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Sample Results

Use Case 1: Game-theoretical optimization

… to control and optimize the microgrid as a single entity.

μG Power

Set-point

Time [min]P

ow

er

[kW

]

Assets make their own decisions about their operation…

Battery 1Battery 2Gas Turbine

Time [min]

Po

we

r [k

W]


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Use Case 2: Planned Islanding

Sample Results

ATS disconnects the grid

Grid power goes to zero

Island mode

Battery real powerGrid real power

Pow

er [

kW]

Time [sec]

Example of an islanding process and subsequent operation

Battery real power

Battery reactive power

Pow

er [

kW]

Time [sec]


Water InletWater Outlet

Heat production stopped

Heat production restored

CHP System Control

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Sample ResultsUse Case 3: Integration of variety of energy types

IM

VFDMotor

Pressure tank

Pressure sensorHeila

controller

To water loads

Water-flow sensor

Power supplyCompressor Pressure tank

Pressure sensorHeila

controllerH2-flow sensor

+ -

H2 O2

Electrolyzer

H2 H2 H2

Inverter

Voltage

Heilacontroller Current

+ -

DC/DC converter

Wat

er s

yste

mH

ydro

gen

sys

tem

Elec

tric

al s

yste

m

To H2 loads


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Power supplyCompressor

Heilacontroller

H2-flow sensor

+ -

H2 O2

Electrolyzer

H2 H2 H2

Simplified Hydrogen System

Hydrogen Tanks

+ -

Fuel Cells

Hydrogen Cars

Pressure sensor

Car fueling with locally produced hydrogen

Use Case 4: Hydrogen Production


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FROM LEFT TO RIGHT: NHAT V. MEYER (BAY AREA NEWS GROUP), JOSE CARLOS FAJARDO (BAY AREA NEWS GROUP), MICHAEL MACOR (THE CHRONICLE).

kept microgrid operational for 10 days even as 2017 California Wildfires caused outages

“Microgrid Kept Power On Even as the California Wildfires Caused Outages”

Microgrid Knowledge

In the News


Pilot Project

https://microgridknowledge.com/islanded-microgrid-fires/

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2019 Deployments


Project 2

Customer: Utility Cooperative, DOE

Highlights:

⚫ Multi-site aggregate DER system

⚫ Behind the meter deployment

⚫ PCC at ~0 under normal operation

⚫ 100% renewable under normal operation

Location: Basalt, CO

End User: Residential Community

Project 3

Customer: Utility Company, DOD

Highlights:

⚫ Single site hybrid (DC-AC) microgrid

⚫ In-front of the meter deployment

⚫ Mission critical system

⚫ Mixed of renewable and fuel-based DERs

Location: Albuquerque, NM

End User: Air Force Base

Customer: Private Owner

Location: Sonoma, CA

End User: Vineyard

Project 1

Highlights:

⚫ Single site hybrid (DC-AC) microgrid

⚫ Behind the meter deployment

⚫ Islanded under normal operation

⚫ 100% renewable under normal operation

Stone Edge Farm Microgrid

Experiences from the

COPYRIGHT © 2019 HEILA TECHNOLOGIES INC. – ALL RIGHTS RESERVED

Documents

Experiences from the Stone Edge Farm Microgrid