Transcript THE TRES AMIGAS SUPERSTATION

UNITING THE NATION’S ELECTRIC POWER GRID
THE TRES AMIGAS
SUPERSTATION
IMPLEMENTING HVDC WITH EXISTING INTEGRATED AC SYSTEMS
CIGRE 2012
20th CENTURY ELECTRIC
Utility Controlled
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21st CENTURY ELECTRIC
Customer Desires &
Configurations
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THREE MAJOR TECHNICAL CONSIDERATIONS
IN HVDC IMPLEMENTATION:
1. HVDC IMPLEMENTATION WITH AC SYSTEMS
2. INFUSION OF POWER ELECTRONICS
3. THE DISPATCH OF POWER
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IMPLEMENTING HVDC CONNECTIONS
Interconnected AC Systems require a huge investment in study & analysis
Long Distance Transmission
• Line losses
Interconnections
• Steady state
• Uncontrolled Load flow
problems and bottlenecks
– Congestion Issues
– Inter Area loop flow
– Cascading Blackouts
• Transient Stability
• Oscillation Stability
• Subsynchronous Oscillations
• Frequency control
• Latency issues (ie Spinning Reserves)
• Voltage Stability
• Inductive and Capacitive limitation
factors
• Physical interactions between
power systems
• System Voltage Stability/Levels
• Reactive Power Loading
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Implementing HVDC connections
– The
Evolution to Fast Acting HVDC
• The only way to interconnect large AC power grids with different phases is
via HVDC (High Voltage Direct Current) facilities
– AC/DC/AC Stations
– Hybrid Transmission systems (AC/DC…DC/AC)
– Multipoint nodes
– Long distance DC Transmission lines
• HVDC has the ability to control the direction and magnitude of the power
flow at each node of a multipoint configuration thereby facilitating the
precise needs of the interconnection points without adverse impacts to
the interconnecting grid
• HVDC has the flexibility not only to adapt to grids with different AC system
real time characteristics but to also facilitate optional ancillary services to
each interconnection node
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Implementing HVDC connections
China: Current HVDC National Grid Plan
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Implementing HVDC connections
Europe: Extended Grid Plan
• From Iceland
(Northwest) to
Israel (Southeast)
= 3,200 mi
• Concept of grid is
25,000 miles of line
Solar Power
Wind Power
Geothermal
Hydro
Biomass
Connections
already in place
or planned
Vision of ABB
and DLR
The new high-voltage network would range from the Sahara to the polar cap. The concept calls for main lines that are 40,000 kilometers long. And
parts of it already exist.
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IMPLEMENTING HVDC CONNECTIONS
REQUIRED:
1. DEVELOP A MULTINODE HVDC OVERLAY
SCHEME
2. DEVELOP THE EMS/INTERFACES TO ENABLE
AC EMS TO RELIABLY OPERATE HVDC
OVERLAY CONNECTIONS
3. DEVELOP THE SECTIONALIZING EQUIPMENT
TI ENABLE FAULT RECOVERY AND SAFE
REAL TIME OPERATIONS
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INFUSION OF POWER ELECTRONICS
From USDOE Office of Electric Delivery and Energy
Reliability
“PRESENTLY, ONLY 30% OF ALL POWER
GENERATED USES POWER ELECTRONICS
SOMEWHERE BETWEEN THE POINT OF
GENERATION AND END USE. BY 2030, 80%OF
ALL ELECTRIC POWER WILL FLOW
THROUGH POWER ELECTRONICS .”
Power electronics moves beyond devices that simply
provide increased awareness, such as Phasor measurement
systems. These devices will respond to, interface with and
control real time power flows.
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INFUSION OF POWER ELECTRONICS
Benefits of Power electronics
• Increased power system reliability and security
• Increased efficiency and loading of existing transmission and distribution
infrastructure
• Huge gains in real time power flow control
• Improved voltage and frequency regulation
• Improved power system transient and dynamic stability
• More flexibility in siting transmission and generation facilities
• The distinction between consumer devices and utility devices will largely
be eliminated electrically
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INFUSION OF POWER ELECTRONICS
21st century smart grid
technologies compared with
those in use today.
Source: IBM Institute for Business Value
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THE DISPATCH OF POWER
The Grid is RELIABLE as long as:
GENERATION = LOAD
• It is a single machine that operates at the speed of light
• Information is the key to successfully integrate HVDC
(multinode fast acting) and secure the advantages of
the availbility of the rapid advances in Power
Electronics
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The Dispatch of the Power - The “CASH” Register
DISPATCH EQUATION
•Dispatch Equation
•Generation + Imports (or- Exports)=Load
•Generators (known)
•Ties (Import/Export) (known)
•Load is increasingly being measured in real-time
•Transmission with real time measured
•New Solution every 5 minutes (SCED)
•Generation and Load share equally in the
benefits of reliable electric operations
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Tres Amigas - Scope of the Business
The Tres Amigas Transmission Superstation can be mapped against the NIST Smart Grid Conceptual
Model to illustrate the scope of the Tres Amigas business.
Transmission: The fundamental offering of
Tres Amigas is transmission service using
systems of advanced HVDC, multinode design
and Power Electronics.
Operations: Tres Amigas Operations will
serve as the hub for both the transmission
operator and market/exchange services.
These functions will utilize Power Electronics
and advanced technologies to provide for
firming, storage, multiphase use generation
and storage.
Clean: Tres Amigas will be a totally green site
using very little natural resources empowering
opertions to enable the clean dispatch of
esources.
Source: The National Institute of Standards and
Technology (NIST) Smart Grid Conceptual Model
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The Tres Amigas SuperStation
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SUMMARY
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The Electric industry is rapidly evolving to a more customer driven and controlled
configuration.
•
HVDC is worldwide the solution to “improve” the historically developed and
mostly dependable integrated AC systems.
•
Implementing HVDC successfully:
– Multinode solutions
– Integration with AC control systems
– Equipment to operate safely in real time
•
The advent of sophisticated power electronics is the means to not only provide
the real time situational awareness to improve the reliable operations of the
existing integrated AC systems, but will leap the industry to the future with
devices that will respond to, interface with and control power flows.
•
Both load and Generation should benefit equally in the system dispatch.
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Tres Amigas SuperStation….
Uniting the Electric Grid
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