EARLY FINDINGS OF AN ENERGY STORAGE PRACTICAL DEMONSTRATION
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Transcript of EARLY FINDINGS OF AN ENERGY STORAGE PRACTICAL DEMONSTRATION
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EARLY FINDINGS OF AN ENERGY STORAGE
PRACTICAL DEMONSTRATION
Peter LANG - UK Power Networks Neal WADE and Philip TAYLOR – Durham University
Peter JONES ABB UK and Tomas LARSSON ABB Sweden
Authors Peter LANG and Neal WADE LANG – UK – S4 – 0413
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Frankfurt (Germany), 6-9 June 2011
Many documents have been written about the theoretical benefits of energy storage
In 2005 AuraNMS set out to research network optimisation taking into account DG and Electrical energy storage
The energy storage device was to be designed, supplied and installed by ABB
UKPN had to find a site where the anticipated benefits could be demonstrated
Background
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Frankfurt (Germany), 6-9 June 2011
Network and Location Requirements
Connected to an 11kV distribution network Wind generation nearby Demand profiles that change Away from the primary substation Be able to assess the benefits e.g. voltage
support, losses reduction, increase quality of supply and many more that are of value to other network users
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Candidate Network
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Frankfurt (Germany), 6-9 June 2011
Preparation
Assess the distribution network Obtain planning permission Lease the land Design review Appoint CDM co-ordinator Arrange contractors
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Delivery, Installation and Commissioning
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The Energy Storage Device
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Frankfurt (Germany), 6-9 June 2011
Characteristics of DynaPeaQ
Li-ion Batteries from SAFT 200 kW for 1 hour 600 kvar inductive 725 kvar capacitive Controlled by ABB’s MACH2 control system
Operating as intended
The next phase…
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Realising Benefits on the Network
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Network Instrumentation
Measurement of: real power reactive power voltage
Industrial PC: data processing communications
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Test Programme
Initial Gradual ramping of power exchanges Pre-determined ESS set-points Operation at ‘quiet’ times
Operational Power exchanges dictated by prevailing
network conditions Voltage control Power flow management
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Control Algorithm
Steady-state Rule based
respond to triggers on network manage battery state-of-charge
Example:
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Network interventions
Voltage control: in response to local or remote measurements.
Power flow management: supply reactive power (wind-farm Q demand), supply real power (thermal constraint), peak shaving, absorb real power (wind-farm generation), absorb real power (reverse power flow), and loss minimisation.
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Assessing the Benefits
Reduction in primary reverse-power-flow
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0.4 MW 0.3 MW 0.2 MW 0.1 MW 0.0 MW