Siemens Aktiengesellschaft · XETR:SIE
Siemens Aktiengesellschaft — Siemens — Investor Presentation (2017)
22 slides from Siemens Aktiengesellschaft's investor presentation, 2017
Slide 1: MVDC PLUS: Managing the future grid
MVDC PLUS Managing the future grid Bridge the distance Connecting weak or unstable grids How should we connect Islands, platforms, and remote areas? How will we integrate and stabilize grids? Reduce footprint What’s the best way to make network upgrades with little visual impact? Increase power infe
Slide 2: Connecting weak or unstable grids
Connecting weak or unstable grids How will we integrate and stabilize grids? Challenges Growing number of decentralized and volatile energy sources Stabilize weak networks Provide high-quality power supply Optimize and control load flow Serve spot markets Solution MVDC Customer benefits
Slide 3: Connecting weak or unstable grids
Connecting weak or unstable grids How will we integrate and stabilize grids? Challenges Solution Load flow control through MVDC: Connect grids via active elements that control load flow and provide reactive power Decouple grids with different frequencies, voltage levels and quality with DC link
Slide 4: Connecting weak or unstable grids: customer benefits
Connecting weak or unstable grids How will we integrate and stabilize grids? Challenges Solution Customer benefits Simple integration of volatile energy Safeguarding the power supply, power Grid stabilizing, load flow control, grid Improved grid quality sources exchange between grids to optimize ind
Slide 5: Bridge the distance
Bridge the distance How should we connect islands, platforms, and remote areas? Challenges Connect remote energy loads (for example, islands, industries, small cities) Reduce CO2 footprint and prevent pollution (for example, diesel generators) Distance of 110-kV AC lines limited due to reactiv
Slide 6: Bridge the distance
Bridge the distance How should we connect islands, platforms, and remote areas? Challenges Solution MVDC Install compact and cost-efficient medium-voltage DC connections DC Link via cable or compact overhead lines Economical power transmission over long distances Remote restart of autark are
Slide 7: Bridge the distance: customer benefits
Bridge the distance How should we connect islands, platforms, and remote areas? Challenges Solution Customer benefits Reduced costs for transport, storage, Cost advantage due to higher Reduced CAPEX due to larger MV Reduced visual and environmental and maintenance for diesel efficiency compared with
Slide 8: Increase power infeed
Increase power infeed How can we enhance existing infrastructure? Challenges Increase rating of existing lines to satisfy growing power demand Connect urban centers with outside transmission system Improve grid stability without network expansion Solution Customer benefits
Slide 9: Increase power infeed
Increase power infeed How can we enhance existing infrastructure? Challenges Solution Convert from existing AC to DC system that enables greater power transfer Improve grid stability with MVDC PLUS system that provides STATCOM functionality Customer benefits
Slide 10: Increase power infeed: customer benefits
Increase power infeed How can we enhance existing infrastructure? Challenges Solution Customer benefits Avoid network expansions Increased asset utilization by up to MVDC PLUS converters provide grid 20-80 percent more transmitted power stabilization features
Slide 11: Obtain transmission autonomy in power ranges up to 150 MW
Obtain transmission autonomy in power ranges up to 150 MW How will we fulfil the enhanced tasks as a DSO? Challenges Connect regions where no HV connection is available Additional connection of energy producers to loaded areas Get more transmission autonomy Reduce transmission and dispatch f
Slide 12: Obtain transmission autonomy in power ranges up to 150 MW
Obtain transmission autonomy in power ranges up to 150 MW How will we fulfil the enhanced tasks as a DSO? MVDC Challenges Solution Establish direct MVDC transmission links and additional grid nodes Customer benefits
Slide 13: Obtain transmission autonomy: customer benefits
Obtain transmission autonomy in power ranges up to 150 MW How will we fulfil the enhanced tasks as a DSO? Challenges Solution Customer benefits Be more independent of HV More flexibility for line planning Enhanced possibilities for integrating decentral energy supply
Slide 14: Reduce footprint
Reduce footprint What’s the best way to make network upgrades with little visual impact? Challenges High visual impact of HV lines with large lattice structures Public resistance against high voltage lines Getting permits for new HV corridors is becoming nearly impossible Solution Customer ben
Slide 15: Reduce footprint
Reduce footprint What’s the best way to make network upgrades with little visual impact? Challenges Solution Medium-voltage level allows for lines with heights below the treetops (<15 m height) Simple MV overhead lines require smaller corridors MV overhead lines with wood poles or simple steel
Slide 16: Reduce footprint: customer benefits
Reduce footprint What’s the best way to make network upgrades with little visual impact? Challenges Solution Customer benefits Low visual impact Faster and less complex Get public acceptance for Lowering stranded planning implementation that speeds up infrastructure upgrades investments construction
Slide 17: Grids are facing new challenges from decentralization and renewables
Grids are facing new challenges from decentralization and renewables Past: Unidirectional energy flow HV MV LV via alternating current (AC) High-voltage transmission Regional sub-transmission network 110 kV Medium-voltage distribution network ≤33 kV Low-voltage level ≤1 kV network ≥220 kV Future
Slide 18: MVDC PLUS combines the best of AC and DC transmission
MVDC PLUS combines the best of AC and DC transmission AC DC AC Alternating current Direct current Simple design Power transmission over long distances Robust and reliable technology Same power transfer at lower voltage level possible Cheap and can be applied with no power electronics No
Slide 19: Modular multilevel converter in MVDC PLUS ensures stable power quality
Modular multilevel converter in MVDC PLUS ensures stable power quality U dp U ac U dn < Underlying technology >
Slide 20: I'm cost-efficient and fast thanks to standardized type ratings
May I introduce myself? I’m cost-efficient and fast thanks to standardized type ratings 1 Converter tower with IGBT 1 2 Control & Protection 2 MVDC PLUS is based on HVDC PLUS technology, standardized for different type rates with positive impacts on costs and execution time < Underlying technology >
Slide 21: Converter tower with IGBT
Converter tower with IGBT < Back to overview < Underlying technology >
Slide 22: Control and protection system
Control and protection system Operation via operator interface Active power control Switchyard control Station Closed-loop Bi-directional power flow control control Interlocking STATCOM operation Start-up/shut-down AC voltage control Sequence of event recording Black start (*) Controller setting AC