Overview

High Voltage Direct Current (HVDC) systems enable utilities to move more power further, efficiently integrate renewables, interconnect grids, 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.

Overview

GE Vernova provides solutions that offer grid operators the ability to provide reactive power support, enhance controllability, improve stability and increase power transfer capability of AC transmission systems.

Overview

GE Vernova offers solutions for a variety of substation projects and applications, including Modular Substation Automation Systems, utility and industrial substation projects, as well as DC substation solutions.

Overview

The energy landscape today is changing, this is being led by the current industry trends of Decarbonization, Digitization, Decentralization and Electrification. Discover how GE Vernova is working with utility, consumer and industrial customers to design and deploy tailored Microgrid and Distributed Energy Resource (DER) Management solutions.

Overview

Innovations to Decarbonize the Electrical Grid. GRiDEA is our portfolio of decarbonization solutions that empower grid operators to address their net-zero objectives.

Product Categories

Overview

GE Vernova offers a wide range of transformer solutions for the utility, industrial, commercial, residential and energy markets. These solutions feature flexible, reliable and robust designs to support a wide range of applications. With units operating in some of the most demanding electrical environments around the world, We design and delivers transformer solutions that provide among the highest level of performance and reliability to meet rigorous operating requirements.

Overview

GE Vernova provides GIS solutions from 50 kV to 800 kV, along with secondary products to maximize switchgear and network operation. The portfolio includes a full range of SF6 GIS as well as g3 (SF6-free) GIS at 145 kV and 420 kV voltage levels for utilities and industries worldwide.

Overview

GE Vernova is one of the top circuit breaker suppliers in the world. Our products include a range of live tank circuit breakers (up to 800 kV), dead tank circuit breakers (up to 550 kV), as well as hybrid and compact switchgear assemblies. We also provide solutions for power generation applications with our generator circuit breakers for installations up to 1,500 MW.

Overview

GE Vernova is a global market leader for disconnectors (disconnect switches) since 1960, with 8 product facilities in 7 countries and hundreds of thousands installations in more than 130 countries around the world. The portfolio includes disconnectors for AC applications (up to 1,200 kV), for DC applications (up to 1,000 kV) and for railway applications. We also offer power connectors to connect two or more conductors for a continuous electrical path.

Overview

GE Vernova is an industry leader in the design and manufacturing of high, medium and low voltage instrument transformers. With more than 100 years of experience, We offer a broad array of standard and high accuracy models for revenue metering and system protection applications. The portfolio of instrument transformers ranges from low voltage at 600 V suitable for industrial and high accuracy revenue metering, all the way up to high voltage at 1,200 kV. The portfolio also includes line traps and digital instrument transformers.

Overview

For a century, utilities have relied on us to deliver electrical products and services to meet their quality, durability and performance needs. Our capacitor and reactor product lines are an integral part of our portfolio. GE Vernova provides power capacitors that meet ANSI, IEEE and IEC standards, and our low voltage capacitors are UL listed. Ratings range from 1 kvar to 500 MVAR, and from 240 volts to 500 KV.

Overview

GE Vernova provides a broad range of bushings and surge arresters to help protect electrical assets. The bushings portfolio includes AC and DC solutions that enable long life, high reliability and installation flexibility. GE’s Tranquell surge arresters are ideal for distribution and EHV applications up to 612kV, and are available as polymer and porcelain station and intermediate class IEEE/ANSI C62.11.

Product Categories

Overview

Our SF₆-free switchgear range features the same ratings and same dimensional footprint as the state-of-the-art SF₆ equipment, with a drastically reduced carbon footprint.

Overview

The collection of required asset condition data from the field on a large scale for GE Vernova and 3rd party electrical equipment is a key step in building a robust Asset Performance Management strategy. Grid Services specialists are constantly evaluating and implementing new innovative inspection technologies applying strict processes and methods. The digital inspections methods are designed to improve the efficiency of data collection, oil analysis and online monitoring. All new approaches to capture data are integrated into the EnergyAPM ecosystem for automatic data transfer.

Overview

Energy costs are significant expenses for utilities and industries at large, particularly those that are energy-intensive or operate heavy machinery. Between 5% and 25%* of the expenses in these organizations are allocated to energy payments, with up to 15%** of this energy consumption being wasted during operations.

Overview

GE Vernova offers a wide range of solutions to monitor and manage critical assets on the electrical grid, detect and diagnose issues and provide expert information and services to customers. Our asset monitoring and diagnostics portfolio includes solutions for single- and multi-gas transformer DGA, enhanced transformer solutions and switchgear monitoring, as well as software and services.

Overview

GE Vernova's Grid Solutions business electrifies the world with advanced grid technologies and systems, enabling power transmission and distribution from the grid to homes, businesses, and industries effieciently and reliably.

Overview

GridBeats™ is a portfolio of software-defined automation solutions for grid digitalization. The portfolio is designed to enable utilities and industrial customers to ensure a stable, efficient energy supply amidst the growing integration of renewable energy sources and aging infrastructure.

Overview

GE Vernova's Critical Infrastructure Communications solutions deliver comprehensive networks that are designed to be secure, flexible, and tailored to meet customers' objectives and unique geographic requirements.

Overview

GE Vernova's comprehensive portfolio of solutions for implementing and managing a substation.

Overview

GE Vernova's Asset Lifecycle Management services combine a large set of methodologies to collect condition data off and online, consulting and asset optimization services using digital technology to improve the monitoring, recording and analysis of asset operations and predict asset behavior.

Overview

GE’s innovative and high-quality services help maintain and optimize high-voltage electrical assets throughout their entire lifecycle. Leveraging the design and manufacturing knowledge of our engineers, the customized service solutions ensure substations and networks perform as planned. Experts deliver services for applications across the power system, keeping assets up-to-date, safe, reliable and efficient while improving customers’ return-on-investment.

Overview

GE Vernova provides a full range of services & support tailored to meet a broad range of power system needs across utility and industrial applications. With deep domain knowledge and industry expertise GE’s service application engineers and technical specialists can help plan, design, operate, maintain, and modernize your protection, control, monitoring and automation systems.

Overview

GE Vernova provides comprehensive services throughout the systems lifecycle. The services can be provided by our local team and with the support of our global Competence Centers when the equipment is installed, during the warranty period and beyond.

Overview

Our technical experts are ready to equip customers with the knowledge needed to effectively manage their critical assets and systems, and increase their return on product investments. Our training courses are offered in a variety of ways, including online, onsite at customer locations, and in our state-of-the art training centers around the world.

Overview

GE Vernova's Grid Solutions' Testing Laboratories enable manufacturers and end users to test their primary equipment by leveraging deep domain expertise and testing facilities, to develop enhanced high voltage products and certify their capabilities before market introductions.

Overview

GE Vernova delivers materials and eco-design studies for high voltage solutions to accelerate insulation and environmental innovation. GE’s services provide the expertise and methods that enable new value to support customer engineering, sourcing, quality control and EHS activities.

Overview

With the rapid digitalization of the grid, utility, power generation and industrial operators require cybersecurity solutions to monitor and protect grid asset and systems from increased severity and frequency of cyber attacks. GE Vernova adopted a “defense in depth” approach, providing innovative cybersecurity solutions designed to increase operational integrity, comply with regulations and control costs of security.

Overview

Utilities today seek to create and connect new sources of power generation to meet growing global demand, while also managing grid reliability, costs and regulatory factors.

Overview

Water is central not just to the economy, but to life. As a result, water treatment systems demand secure, dependable power to ensure process uptime. From the grid-connected substation to reliable electrical protection, control, and power quality metering, GE Vernova offers tailored solutions to keep critical plants operational and meet the unique needs of the water and wastewater industry.

Overview

As power systems become increasingly interconnected and complex, utilities need solutions that optimize energy transmission and management while improving reliability.

Overview

Data centers – and the information they store – are becoming increasingly integral to the way we live our lives every day. With rising demand also come rising costs. And more importantly, the information in these centers must remain secure while simultaneously accessible. We provide data centers with electrical infrastructure solutions from the input utility source to the IT server racks. This includes high-voltage switchgear and transformers, medium and low voltage electrical equipment, automatic transfer switches, switchboards, UPS systems, critical power PDUs, static transfer switches, and overhead busway. This chain of electrification products provides high quality and reliable products and services for the entire lifecycle of a data center.

Overview

The oil and gas industry is evolving at a rate never seen before, facing shifting pricing levels, ever-changing regulatory requirements, and increased environmental consciousness. Through reliable, safe, and innovative solutions and a holistic service offering, GE Vernova can help the energy sector thrive in this changing reality.

Overview

Modernizing and digitizing the distribution grid is imperative for utilities and customers to enhance power system stability and safety, while increasingly integrating distributed power and demand response.

Overview

The industry is changing. Simultaneously, so are your utility’s needs. Operational effectiveness, power stability, and critical asset management are key priorities – whether in pulp and paper, steel, or data centers. GE’s holistic portfolio of products and services are designed with reliability, innovation, and sustainability at the forefront, helping you face the energy transition with ease.

Overview

Mining companies require secure communications, efficient asset performance management, and dependable, innovative technology to protect their critical assets. GE Vernova offers a broad product portfolio to help you through each step of the mining process – safely and reliably.

Category banner
HV/MV Equipment
HVDC Disconnectors

Grid Solutions > HV/MV Equipment > Disconnectors > HVDC Disconnectors

  
HVDC Disconnectors

Disconnectors (DSC) for HVDC applications are designed to specific constraints and requirements typical for DC applications, that are quite different compared to AC applications. They are requested to withstand DC voltage open gap and to ground to ensure safety for the people in the substation and to permit proper and safe layout configuration. In some cases, like for filter applications, they are requested to break a sum of harmonic currents at a certain voltage (amply smaller than the rated voltage of the disconnector) due to the ripple created by harmonics on the reactances.

All these DC disconnectors take benefit of huge experience and installed base of AC disconnector technology delivered worldwide in regards to design technology and quality e.g. supplier qualification, assembly processes or ISO conformity.

Key Features
  • Self protected design of contacts (L-type contact) preventing pollution deposit and hot spots
  • HVDC design of post insulators
    • High value of minimum creepage distance enforcing height
    • Dedicated shed profiles
  • Specific layout design (also 2 or 3 post insulators for each contact side)
  • High seismic performances
  • Special design of anti-corona rings
Overview
GE Advantage
Knee-Type DSC
Center Break DSC
Vertical DSC
Valve Hall Earthing

Today’s Challenging Environment

Globally the utility environment is becoming more complex and utilities are having to manage new challenges such as:

  • Increasing demand for electricity
  • Connection of remote generation
  • Growth of distant offshore wind
  • Integration of variable renewable generation
  • Need for security of supply
  • Reduce carbon footprint
  • Land costs becoming more expensive
  • New right-of-way access permits increasing difficult to obtain

The only choice for many utilities is to restructure their grid systems to manage these challenges. Utilities are looking for cost effective solutions to transfer power and to improve the quality, stability and reliability of the grid which will anticipate their needs for the next 20 to 50 years.

GE's Solution

High Voltage Direct Current (HVDC) solutions are ideal for supporting existing AC transmission systems or for building new power highways. HVDC is a system which interconnects two AC networks, converting AC voltage to DC voltage, and DC voltage to AC voltage utilizing power electronics technology. HVDC systems enable transfer of power, interconnection of grids, integration of renewables and maximize grid performance.

back to back hvdc interconnectionBack to back HVDC Interconnection

The GE Advantage

GE’s HVDC Disconnectors are developed based on the highest standards for performance, ratings, user convenience and reliability.

Every model is designed utilizing 3D design tools and analysis software to achieve the highest performance. Switches and Disconnectors are thoroughly type tested and subject to routine tests to meet or exceed the latest standards and requirements. Dependent on customer requirements, GE is able to design and supply highly customized products.

Based on years of global experience, deep domain expertise, manufacturing excellence and several deployments across multiple applications and industries, GE has dedicated projects teams working in partnership with our customers to ensure successful equipment implementations. GE provides customers with the following competitive advantages.

Robust Design Leveraging Cutting Edge Technology Provides High Performance and Lower Total Cost of Ownership

  • HVDC disconnectors use the latest technology of contacts in order to ensure maximum protection against pollution and ice, ensuring limited overhead clearance and a very short phase to phase distances, without middle electrode
  • All switchgear is designed to operate within extreme environmental conditions with available options for high elevation, very low and high temperatures (-60 °C to +60 °C), seismic zones, polluted areas, and corrosive atmospheres.

Manufacturing Excellence to Ensure Highest Quality Standards

  • Global manufacturing sites certified according to ISO 9001 and ISO 14001 standards
  • Products are manufactured utilizing GE’s Advanced Production System ensuring the highest level of quality
  • Customized designes available to meet customer application requirements

Extensive Research, Testing and Proven Field Experience Resulting in Enhanced Reliability

  • R&D Competence Centers and associated testing labaratories assure extensive research and testing for DC applications
  • Specific HVDC tests are carried out in laboratories to ensure best performance over life time of assets
  • 400,000+ units of circuit breakers and disconnectors for AC and DC installed worldwide and in service in more than 100 countries

Optional Features for Enhanced System Compatibility, Digital Integration and In-House Expertise

  • Complete monitoring system available for asset management and digital substation integration
  • Full life-cycle support for products, spare parts management and technical training by GE Subject Matter Experts
  • Local Product Sales Specialists provide strong product and technical support
HVDC Substion Bina IndiaHVDC Substion Bina India

Knee Type Disconnector up to 800 kV

Knee Type Disconnector

GE’s knee type disconnector SPO/SPOL has been designed with one rotating and two fixed insulators. Thanks to its folding arm design (knee), it requires limited overhead clearance and a very short phase-to-phase distance. The outstanding gap factor allows a relatively short air gap and a lighter arm. No electrodes are needed in the middle.

The center of gravity is quite low, with great advantages for balancing, seismic withstand and operating torque. The low operating torque permits sure operation using a motor drive mechanism as well as easy manual operation and it does not stress the rotating insulator. The design is contact rebound free resulting in very smooth movement and a relatively fast operation (about 10÷15 s for a 550 kV disconnector).

L-Contact

The main contact can be of the L- type, the solution patented by GE helping to ensure highest protection against air pollution and ice. The L-Contact is also maintenance free and therefore represents the best technical choice for DC applications.

Center Break Disconnector up to 245 kV

Center Break Disconnector

The center break disconnector type S2DA is the most commonly used and economical disconnector, but requires an increased phaseto-phase distance. In the center break design the two arms rotate and the disconnector opens in the center.

Vertical Break Disconnector up to 800 kV

Vertical Break Disconnector

The vertical break disconnector has one rotating and two fixed insulators. The double movement of the blade ensures excellent performance in terms of ice breaking and short-circuit withstand. The vertical break requires a minimal phase-to-phase distance and the main contact can be of the L-type.

L-Contact

The main contact can be of the L- type, the solution patented by GE helping to ensure highest protection against air pollution and ice. The L-Contact is also maintenance free and therefore represents the best technical choice for DC applications.

Valve Hall Earthing Switch up to 800 kV

Valve Hall Earthing Switch up to 800 kV

The valve hall is an important component of the HVDC system. The grounding of a valve hall’s elements is ensured by highly customized earthing switches.

Two different earthing switch designs have been developed by GE:

  • Wall mounted “grasshopper”
  • Floor mounted “semi-pantograph"