GE High Voltage Direct Current Systems

is particularly attractive and may be the only technically feasible method of

transmitting power using cables.

HVDC Applications

Transferring Bulk Power Over Long distances

Challenge

Transfer large amounts of power from distant power sources, such as hydro

plants, to a load centre.

GE’s solution

GE’s HVDC LCC point to point scheme is ideal for the bulk transfer of

power utilizing overhead lines over long distances providing a fully flexible,

controllable and environmentally friendly solution for transmit power.

Benefits include

• Maximizing transmission of substantial power utilizing UHVDC up to 800kV

• Improves environment impact as a result of the smaller towers and right

of way requirements

• Increasing power capacity up to 3 times more than AC circuits

Interconnecting Grids

Challenge

Interconnect asynchronous AC electricity grids to enable energy exchange,

which provides dynamic reserve power support, relieve energy bottlenecks

and maximize the efficient use of available power.

GE’s solution

GE’s HVDC back to back schemes are ideal for interconnecting grids

operating at different frequencies, not synchronized, operating at high

power and in extreme temperatures up to +55° C.

Benefits include

• Exchanges energy between two unsynchronized AC systems

• Provides fully controllable and flexible dynamic reserve power support

• Manages fault propagation providing a power "firewall" between the

interconnected networks

HVDC Applications

Connecting Offshore Wind

Challenge

Bring power from distant wind farms to the onshore grid.

GE’s solution

GE's HVDC VSC technology is the most economical and feasible solution for

connecting submarine cable applications, such as offshore wind farms. GE’s

solution gives full control and flexibility in managing the intermittent and

variable generation.

Benefits include

• Provides a low loss solution, with the most efficient method of

transmission technology

• Enables the controllability of intermittent power

• Optimizes the use of submarine cables

Infeed Urban Areas

Challenge

To get power into congested cities to address increasing demand, lack of

power highways and difficulties with establishing rights of way for a new grid.

GE’s solution

GE’s VSC HVDC technology is ideally suited to provide controllable

and efficient power into congested areas where small footprint and

environmentally acceptable solutions are essential.

Benefits include

• Minimizes the visual impact of the power infeed on the local landscape

• Provides high levels of power injected directly to where it is needed

• Manages fault propagation providing a power "firewall" between the

interconnected networks

• Provides lowest loss solution, with the most efficient method of

transmission technology

Connecting Renewable Generation

Challenge

Bring power from remote renewable sources to load centres

GE’s solution

GE’s HVDC LCC and VSC are amongst the most economical and feasible

solutions for connecting renewable generation applications, such as wind,

hydro and solar power. GE’s solution gives full control and flexibility in

managing the power flow from the intermittent and variable generation to

the load.

Benefits include

• Provides a low loss solution, with the most efficient method of

transmission technology

• Enables the controllability of intermittent power

• Improves environment impact as a result of the smaller towers and right

of way requirements

• Increasing power capabilities up to 3 times more than AC circuits

Multi-terminal HVDC systems and DC Grids

Challenge

Interconnect three or more regions and power systems to facilitate power

exchange and trading, and to provide added system security, efficiency and

flexibility to the benefit of the overall grid.

GE’s solution

GE’s HVDC enables the interconnection of multiple HVDC converters

providing controllability of power flow and facilitates the future expansion

into HVDC grids.

Benefits include

• Better management and integration of renewable energy generation

• Increases grid security

• Enables cross border energy trading

• Provides more efficient network by reducing reliance on thermal generation