This first portion of the Atlantic Wind Connection will feature an Alstom kV HVDC transmission system that includes converters and. Alstom Grid’s HVDC demonstrator system with power converter modules. The improved controllability of the VSC in this system makes it well-suited for smart grid. Some of the major companies dominating the HVDC transmission market are ABB (Switzerland), Siemens (Germany), Alstom (France).
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High Voltage Direct Current HVDC systems enable utilities to move more power further, interconnect grids, integrate renewables, and improve network performance.
HVDC systems utilize power electronics technology to convert AC and DC voltage, and are ideal for supporting existing systems or building new power highways. GE is globally recognized for designing, manufacturing and delivering customized HVDC solutions for utilities worldwide.
Every HVDC solution is tailored and designed based on a project-by-project assessment of the customers’ individual requirements, whether it’s for long distance power transmission, energy trading between independent networks or connection between asynchronous networks.
Robust leading edge technology designed and built in advanced automated manufacturing and testing facilities to maximize quality and system performance.
State-of-the-art Model Based Design Control System that minimizes project risk and ensures optimal and accurate performance by direct deployment into the system software. Trusted project partner with a uvdc customer engagement model, extensive technical domain expertise resulting in optimized solutions that exceed customer expectations.
HVDC enables bulk transfer of power, interconnect grids, integrate renewables and maximize grid performance.
List of HVDC projects – Wikipedia
Line Commutated Converter is a mature cost effective HVDC technology based on thyristor power semiconductors, which enables the bulk transfer of power of up to 8 GW with lower losses and inherent DC fault protection. Voltage Source Converter is a newer technology based on power transistors with a reduced footprint compared to LCC technology.
VSC has distinct technical advantages over the traditional LCC schemes because it creates an AC waveform that allows the scheme to control real and reactive power independently and transmit real power into a very weak AC network, which is not possible with LCC. With 10 times more computing power, eLumina brings more data to operators, enabling actionable intelligence through improved analytics and situational awareness.
Suitable for frequency changing and asynchronous connections. This scheme provides fast accurate power flow, limiting the spread of cascading faults and provides increased system flexibility and prevents the need to build a new generation network. Once interconnected, the two systems’ daily and seasonal cost differences can also be optimized. Commonly used for bulk transfer of power applications utilizing overhead lines over long distances providing low cost, fully functional, reliable and environmentally friendly way to transmit power.
Where the power exchange or transmission crosses water, or an environmentally sensitive region, cables may be the favored method of interconnection between the HVDC Converter Stations.
HVDC transmission is particularly attractive and may be the only technically feasible method of transmitting power using cables. 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.
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 gives full control and flexibility in managing the intermitted and variable generation to the load. Challenge To get power into congested cities to address increasing demand, lack of power highways and difficulties with establishing rights hvvc 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. Challenge Interconnect three or more regions and power systems to facilitate power exchange and trading, and hvddc provide added system security, efficiency and flexibility to the benefit of the overall grid. GE has designed, hvfc and supports an installed HVDC capacity of more than 35 GW globally in a broad range of applications and environments.
The below details are a selected representation of HVDC projects, a complete reference list is available upon request. You can also read our case studies for additional information on select HVDC projects. Improve power quality, stability alstm maximize grid performance.
Trusted project partner with a collaborative customer engagement model, extensive technical domain expertise resulting in optimized solutions that exceed customer expectations Recognized in the industry as having one of zlstom most flexible, engaging and educational collaborative customer models among all HVDC providers, ensuring transparency in all aspects of project execution Deep domain expertise, including multiple Uno Lamm award recipients across our global HVDC centers in the USA, India and South Korea, coordinated from our HVDC Center of Excellence in Stafford, UK Global EPC capability that leverages GE’s combined transmission and power generation project execution excellence through shared partner networks, localized supply chain and industry leading project management practices.
Point to Alstpm Scheme Commonly used for bulk transfer of power applications utilizing overhead lines over long distances providing low cost, fully functional, reliable and environmentally friendly way to transmit power. Back to back scheme is hvcd for frequency changing and asynchronous connection. Point to point submarine cable bulk transmission underwater or underground. Point to point overhead line is suitable for bulk transmission overland.
High Voltage Direct Current (HVDC) Systems : GE Grid Solutions
Submarine scheme provides bulk transmission from offshore platform to shore. Applications Transferring Bulk Alsotm Over Long distances Challenge Transfer large amounts of power from distant power sources, such as hydro plants, to a load centre. Benefits include Maximizing transmission of substantial power utilizing UHVDC up to kV 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.
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.
Connecting Offshore Wind Challenge To bring power from wind farms to the onshore grid.
Benefits include Provides lowest loss solution, with the most efficient method of transmission technology Enables the controllability of intermittent power Maximizes the submarine cable capacity. 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.
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. 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.
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.
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. Back to Back Rating: Overhead Line, km Rating: France Italy Link Scheme: Overhead Line km Rating: Cable 34 km Rating: About Grid Solutions GE’s Grid Solutions business serves customers globally with over 17, employees in approximately 80 countries.
Grid Solutions helps enable utilities and industry to effectively manage electricity from the point of generation to the point of consumption, helping to maximize the reliability, efficiency and resiliency of the grid. Flexible AC Transmission Systems. Electrical Balance of Plant.