Transcript 2 Dai EATON - Workspaces

Utility Scale Energy Storage
and Microgrid Solutions
6th U.S.-China Climate Change Working Group Smart Grids
Workshop
JJ Dai, Director of Renewable Energy Applications APAC, Eaton Corporation
November 2, 2016, Shenzhen, China
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Structural
solutions and
wiring devices
Eaton: One brand with
solutions for the entire power
system and expertise spanning
seven core competencies
Backup
power
protection
Power distribution
and circuit protection
Solutions for
harsh and hazardous
environments
Data centers
Industrial
Utility
Commercial
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Engineering
services
Control
and
automation
Lighting
and
security
Residential
Machine building
2
Power XpertTM Solar/Storage
Utility-Scale Inverter
Typical Energy Storage
System for
Utility-scale
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Eaton Utility scale 5 MW battery storage
- Oregon General Electric
Feeder is approximately 2.5
miles total length; distributed
residential, commercial, and
light industrial loads.
PLC
GEN
PLC
GEN
PLC
EXISTING Distributed Generation
•
GEN
GEN
GEN
GEN
6 total generators totaling 5.7 MW
WAN
Customer
Loads
WAN
Utility
Substation
Customer
Loads
Customer
Loads Distributed
Residential
Loads
Islanding
Breaker
PV
Central Control /
Dispatching
Customer
Loads
15 kV Feeder
BATTERY /
INVERTER
SYSTEM
PLC
WAN
WAN
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4
Utility battery storage system components
Batteries
• 1 MW / 1.25 MWh EnerDel Lithium-Ion battery
blocks and battery management system
(x 5 for total of 5 MW)
Inverters
• 20 Eaton PowerXpert 250 kW inverters, adapted
for battery storage application
Associated AC Power System
• Low-Voltage switchboards
• Step-up transformers
• Medium-voltage switchgear, metering, protection
• UPS (for control)
Storage Master Control System
• Integration services to coordinate and regulate
operation of multiple inverters and battery banks
and interface with utility control system
One of the first Li ion projects of this size, active since 2012
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5
Energy storage solution for Buildings
- Existing customer installation example
Utilizing both new and second life EV Batteries
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6
Energy Storage System for Commercial / Buildings
– Some technical details
Storage
Capacity
• From 12 kWh to MWhs using strings of battery packs
• Battery pack capacity based on battery modules:
• 4,2 kWh - Second life batteries
• 6 kWh - New batteries
• 7,5 – 9,6 kWh – New batteries available 2017
Output
230/400V, 3~ + N
Power
From 10kW to several MW
Installation
Fits in 19 inch standard racks (EIA-310-E)
Up to 10 battery packs per 42U rack
Operating
temperature
5°C – 40°C
Battery life
~10 years - Estimate based on 1 daily full cycle usage
Efficiency
Online (on utility grid): >96%
Battery mode: >95%
UPS features
Up to 97% efficiency in double conversion
>99% efficiency with Energy Saver System
Compact footprint
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Battery packs in rack plus
Inverter platform
7
Energy Storage Systems can help
• New ways to offset energy costs to rate payers
• Revenue opportunities such as demand management
• Uninterrupted, high quality power
• Protection of critical loads
• Integration of renewables into the energy supply
• Flexibility to adapt to an ever-changing
environment
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8
Energy storage delivers tangible benefits
across the energy chain
Generate additional revenue
Cost savings
on electricity and operational
expenses
Centralized /
Distributed
Generation
Utility T&D
Large
Commercial
/ industrial
+++
++
++
+
+
+++
Optimize use of renewable
energy
+++
Defer utility system
investment
+++
Maintain resiliency
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+
+++
+
+
+++
9
The Microgrid Energy System Concept
Local “Grid Within a Grid”
Utility
Wind
•
Delivers Power Resilience, Reliability
and Uptime
Distributed Energy Sources
Back-up Generation
Battery
Facility Loads
(Critical Loads)
Solar
•
Backup Generation
•
In-House Co-Gen
•
CHP (Combined Heat and Power)
•
On-Site Renewables and Fuel Cells
•
Energy Storage (Batteries)
Microgrid Applications
In-House Co-Gen
Imagery ©2015 Google, Map data ©2015 Google
A group of generating assets and defined loads that can
operate within the utility grid or islanded from the grid, as a
self-sufficient stand alone application
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•
Islanding & Synchronization
•
Black Start
•
Generation/Load Balance Control
•
Battery Energy Storage & Frequency
Regulation
Requires Control System “Glue”
to Achieve System Performance
10
Eaton Menomonee Falls’ Microgrid
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11
Eaton Microgrid for a hospital
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12
Eaton’s Microgrid Energy Management System
System
Design
Seamless
islanding
To Substation
PCC
Legacy
Communication
Protocols
Black start
Frequency
and voltage
control
To SCADA/Customer
Breaker
Relay
Meter
Local
Controller
Generators
System
Controller
System
balance
Renewable
optimization
HMI & Data
Historian
Local Controller
Local Controller
Energy Storage
Photovoltaics
IEC 61850
Communication
Protocols
Local
Controller
Local
Controller
HVAC
Buildings
Metasys®
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Lowest cost
Proprietary
Communication
Protocols
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Guangdong Nansha Microgrid System
• This is a Microgrid demo system, collaborated by China Southern Power Grid (Guangzhou Power Supply Co. Ltd.)
and Eaton Corporation.
• The system will be able to operate solely depending on renewable energy to achieve zero CO2 emission; to
seamlessly connect and disconnect with the power grid; to sustainably handle power outages during extreme
environment conditions.
• The learned experience and module system design and construction will be applied to commercial Microgrid
solutions within China Southern Grid and entire China.
Control Center
100kW Wind
200kW Solar
Ice Storage AC
100kW Wind
200kW Solar
EV Charger
Ship-Shore
Power Supply
1MWh Storage
Ground-source
Heat Pump
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14
Nansha Microgrid System Conceptual Design
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