Solving Energy Storage Challenges OffshoreOffshore Europe 2017 Cinema Seminar

Dr. David Blood

EGT Market Manager EMEA

Parker Hannifin

Speaker Biography

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• David’s career spans more than 25 years of engineering and technical

experience, including highly specialist development roles.

• David is an expert on battery storage systems and inverter drives. A

talented engineer with a strong understanding of emerging technologies,

he was responsible for developing and implementing control technology

into Parker’s inverter products – allowing them to be used in ‘grid-tied’

applications.

• He holds a degree in electrical an electronic engineering and a PhD from

the University of Reading.

Market Drivers for Energy Storage

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Financial

• High running costs

• Increasing maintenance costs

• Burning power

Operational

• Significant variances in power quality

• Peaky loads on typical islanded power grids

• Redundancy in typical gen set operations

Energy Storage Applications

1. Adding Battery Energy Storage acts as a ‘shock absorber’, providing the ability to inject or absorb power from the transmission grid within milliseconds, and helping to stabilize voltage and frequency in the presence of ever increasing levels of variable renewable generation.

2. Peak generation levels can exceed the maximum capacity of a grid connection, traditionally resulting in the loss of potential revenue. Adding a battery energy storage system allows the batteries to absorb excess power during periods of high generation which can then be exported to the grid during periods where generation is lower. Additionally, a commercial or industrial site can reduce or eliminate demand charges by adding a BES.

3. Adding BES to a hybrid off-grid islanded network increases stability by allowing the storage and release of variable renewable energy to fill demand deficits.

4. Adding BES within a distribution substation allows the supply of power from batteries on to the local network to meet the demands of short term peak loads, without the need for additional transformers and transmission lines.

5. Combining a diesel generator with battery energy storage allows for the specification of smaller gensets, running for shorter periods. The result is lower fuel costs, reduced running hours and fewer emissions, leading to MRO savings, a cleaner environment and lower kWh costs.

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4

Supplying Ancillary Grid Services

Optimizing Off-Grid Islanded Network Efficiency

Infrastructure Deferral within Distribution Networks

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Reducing Operational and Capex Cost

5

Overcoming Capacity Constraints

• Storage can be Super Caps, Batteries or

Flywheels

• Batteries charge through inverter when

demand is low

• Batteries discharge to grid when demand

is high

Energy Storage – ‘Nuts and Bolts’

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Active BridgeInverter

CL Filter

POWER FLOW

CONTROL BMS

BATTERY MODULEPARKER EGT

POWER CONVERSION

SYSTEM

POWER

GRID

Energy

Management

System

13.8 kV 480 V

<3%THD

PLC SCADA RTU

InterfaceModBus TCP

Mo

dB

us

TC

PM

od

Bu

sT

CP

Batteries charge through inverter when demand is low

Batteries discharge to grid when demand is high

Site Power Management

• Multiple gen-sets required for redundancy and power continuity

• Electrical load “peaky” and even net regenerative

• Gen-sets run inefficiently leading to increased costs

• “Knock-on” effect on power quality

• Voltage and frequency variations

• Operation issues

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Energy storage is a “shock absorber” to smooth “peaky” loads

Impact of Energy Storage

Load inefficiencyband

• Gen-sets have an optimal “sweet spot” of operation

• Specific load and speed

• The closer we run to the “sweet spot” the lower our costs in fuel and O&M

• Power quality issues are also addressed

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How This Works in Practice

• A typical drilling rig set-up will have

multiple diesel gen-sets running in parallel

to provide electrical power in order to

ensure redundancy and continuity in the

power supply

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Gen sets

Loads Top

drive

Draw

works

Mud

pump

BOS

Variable demand

Constant supply4

2

1

3

Battery storage can be added to the micro-grid as a means to level the electrical load

How This Works in Practice

•Adding energy storage provides the

potential to turn off one or more gen-sets,

thus saving fuel and O&M costs

•The energy storage system can be

charged from the remaining gen-sets.

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Gen sets

Loads Topdrive

Draw works

Mudpump

BOS

Variable demand

Constant supply4

2

1

3

Batterycontainer

Battery storage can be added to the micro-grid as a means to level the electrical load

PCS

Low Load Demand

• At times of low power demand, the remaining gen-sets can provide

power to the loads as well as charging the energy storage.

• In addition, if there’s a point in the production cycle where the net

load on the islanded grid becomes regenerative, this excess energy

can be stored (by charging the storage) to be consumed later in the

cycle, rather than just burnt in resistive load banks.

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Gensets

Load

Top

Drive

Draw

Works

Mud

Pump

BOS

PCSBattery

Container

Battery storage system charges batteries

using excess generated power

4

2

1

3

Typical Load Demand

• As the load power requirements increase

this can be supplied by both the remaining

gen-sets and the energy storage.

1010

Gensets

Load

Top

Drive

Draw

Works

Mud

Pump

BOS

PCSBattery

Container

Battery storage system discharges just enough

energy to “shave the peaks” and maintain level load

4

2

1

3

Peak Load Demand

•At peak power demand, the storage can

provide maximum discharge power to meet

the needs of the islanded power grid.

•At the same time it can ensure power

quality is maintained within specification

(voltage and frequency) with benefits to

other equipment connected to the grid -

continued to operate trouble free operation.

1111

Gensets

Load

TopDrive

Draw Works

MudPump

BOS

PCSBatteryContainer

4

2

1

3

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• Cut operational costs

• By running gen-sets in their optimum range, fuel use is reduced

• Better power quality

• Frequency/voltage stability maintained under changing loads

• Less load variation/wear and tear on gen-sets

• Lower O&M costs

• Potential to turn off one or multiple gen-sets

• Battery handles peak load

• Lower emissions

Benefits of Adding Energy Storage

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• Safety considerations for marine projects

• Battery management

• Management controls/risk

Specification Challenges

Energy Storage in Practice:San Diego Gas and Electric

• Natural gas facility leak, LA basin

• Fast-tracked 100MW energy storage

systems

• Released in July/installed December 2016

• Parker awarded 57.5MW of 100MW

• Partnership with AES and Greensmith

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37.5 MWsQty. 500

20 MWsQty. 10

• Natural gas facility leak, LA basin• Fast-tracked 100MW energy storage systems• Released in July/installed December 2016• Parker awarded 57.5MW of 100MW• Partnership with AES and Greensmith

Utility Energy Storage:RWE/Westnetz, Germany

• 250 kW / 1MWh PCS and batteries in single container

(easily relocated)

• PV Support, T&D Deferral

• Reduced PV Curtailment and Improved Grid Stability

• Battery Technology: Lithium-Ion, LG Chem

• Commissioned: 2015

• German power utility market

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• 250 kW / 1MWh PCS and batteries in single container (easily relocated)

• PV Support, T&D Deferral

• Reduced PV Curtailment and Improved Grid Stability

• Battery Technology: Lithium-Ion, LG Chem

• Commissioned: 2015

• German power utility market

• Growing numbers of EVs and supporting

DC feed rapid chargers. 50kW - 100kW

moving to 300kW in the future• Rapid charging capability without needing distribution

network upgrades

• Remote management and monitoring

• Modular and portable

• Lithium-Ion second life automotive battery technology - can be slowly

charged from the grid or local renewable sources and then provide the peak power required from the fast chargers

• Power utility market16

EV Rapid Charging Energy Storage:Future Transport Systems/Connected Energy

• 50kW/50kWh rating

• E-STOR system - rapid charging

capability without needing distribution

network upgrades

• Remote management and monitoring

• Modular and portable

• Lithium-Ion second life automotive

battery technology

Questions and Discussion

Contacts for further information

Dr David Blood

EGT Market Manager EMEA

T: +44 (0)1903 737318

E: dblood@parker.com

Nigel Smith, Technology and Market Development Manager

T: +44 (0)7974 237013

E: nigel.smith@parker.com

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