Solving Energy Storage Challenges Offshore | Offshore Europe 2017
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Solving Energy Storage Challenges Offshore - Offshore Europe 2017 Cinema Seminar - Dr. David Blood, Parker Hannifin Energy storage is big news, following the UK government’s announcement to establish a center for battery research and plans to reduce or shift electricity use to creating a smarter, more flexible energy system. Moving rig-based diesel gen sets to a new hybrid technology might sound like a step too far. But using battery storage alongside existing power systems is not a huge leap, with the potential to reduce fuel, operations and maintenance costs, whilst improving power quality. This technical seminar for oil and gas professionals was run by Parker at Offshore Europe 2017. It covers the potential applications and benefits of energy storage, an overview of micro-grids and how to overcome potential challenges. The presentation also features some case study examples. Learn more: http://solutions.parker.com/OE17_Contact
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Solving Energy Storage Challenges Offshore | Offshore Europe 2017
- 1. Solving Energy Storage Challenges Offshore Offshore Europe 2017 Cinema Seminar Dr. David Blood EGT Market Manager EMEA Parker Hannifin
- 2. Speaker Biography 1 • 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.
- 3. Market Drivers for Energy Storage 2 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
- 4. 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. 3 4 Supplying Ancillary Grid Services Optimizing Off-Grid Islanded Network Efficiency Infrastructure Deferral within Distribution Networks 1 2 34 Reducing Operational and Capex Cost 5 Overcoming Capacity Constraints
- 5. • 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’ 4 Active Bridge Inverter 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 Interface ModBus TCP ModBusTCP ModBusTCP Batteries charge through inverter when demand is low Batteries discharge to grid when demand is high
- 6. 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 5
- 7. Energy storage is a “shock absorber” to smooth “peaky” loads Impact of Energy Storage Load in efficiency band • 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 6
- 8. 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 77 Gen sets Loads Top drive Draw works Mud pump BOS Variable demand Constant supply 4 2 1 3
- 9. 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. 88 Gen sets Loads Top drive Draw works Mud pump BOS Variable demand Constant supply 4 2 1 3 Battery container Battery storage can be added to the micro-grid as a means to level the electrical load PCS
- 10. 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. 99 Gensets Load Top Drive Draw Works Mud Pump BOS PCS Battery Container Battery storage system charges batteries using excess generated power 4 2 1 3
- 11. 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 PCS Battery Container Battery storage system discharges just enough energy to “shave the peaks” and maintain level load 4 2 1 3
- 12. 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 Top Drive Draw Works Mud Pump BOS PCS Battery Container 4 2 1 3
- 13. 12 • 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
- 14. 13 • Safety considerations for marine projects • Battery management • Management controls/risk Specification Challenges
- 15. 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 14 37.5 MWs Qty. 500 20 MWs Qty. 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
- 16. 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 15 • 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
- 17. • 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 market 16 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
- 18. 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 17