Benefits:

• Safe connectivity of intermittent generation
• Voltage dip reduction
• Inrush current mitigation
• Transformer stress limitation

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Securing Your Primary Equipment

• With extensive data acquisition and storage capabilities, the CSD100 allows for extensive monitoring and optimized switching in order to protect equipment. Together, with its digital communication abilities, the CSD100 plays a key role in your asset performance management strategy
• CSD100’s design simplifies substation integration
• Built-in cybersecurity features, in line with the latest NERC, IEC, and IEEE standards, ensure a high security level

Benefits:

• Improved overhead lines and cables management
• Safe closing and auto-reclosing
• Optimization of insultation levels
• Optimization of overhead lines designs
• Reduction of surge arrestor stress

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Controlled switching of multiple loads

CSD100 is an advanced controlled switching device for high voltage AC circuit-breakers for any kind of application.

Challenges

Depending on substation architecture, one single circuit-breaker will operate different loads. Maintain optimal performance in such situation is a real challenge.

One single Controlled Switching Device per Circuit-breaker

GE Vernova has developed for the CSD100 a multiple load switching feature, allowing to use one single device per circuit-breaker.

• Whatever the substation architecture with tie circuit breaker or meshed arrangements
• Whatever the operating mode, for example:
  • Power plant black-start from the grid (line or cable)
  • Compensated line or only grid compensation with shunt reactor
  • Variable neutral position (or grounding) for compensation asset

The positions of the substation apparatus (circuit-breakers, disconnector switches) define the load to switch. The CSD100 selects the programmed switching strategy accordingly.

Benefits:

• Controlled operations of single circuit-breaker siwtiching several loads
• Useful for any kind of substation architecture/configuration
• Switching strategy automatically adapts to the real time

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Due to technology limitations, utilities today install and manage communication networks that are purpose-built for each application. With the MDS Orbit Platform, utilities can now capitalize on uniform security to converge disparate applications within one network and reduce personnel training time. MDS Orbit is a highly versatile industrial wireless platform that provides multiple wireless access technologies depending on terrain, customer concentrations and economy.

MDS Orbit Application Example

A foundational building block for the MDS Orbit Platform is security, a core competency area for GE Vernova, and a critical consideration and requirement for evaluating wireless communications systems for customers across all industry types and geographies. GE Vernova approached the development of its comprehensive security framework from three different perspectives:

• Securing the device – ensuring that the device isn’t compromised by tampering or alterations
• Securing the user – ensuring that only the right users have access to prevent inappropriate device, network configuration and status entry
• Securing the network – ensuring that only the right devices are on the network by preventing unauthenticated access to the network/services

By securing the device, the user, and the network with open standards-based algorithms and protocols, the MDS Orbit Platform provides the necessary functions and tools to enable utilities to meet cyber security requirements and regulations.

Security Features Embedded in the MDS Orbit Platform

GE Vernova’s MDS Orbit Platform has been designed with flexibility to allow use of different communication technologies to meet specific bandwidth, range, frequency, and geographic requirements of industrial applications. The CPU horsepower of an MDS Orbit device can be scaled to meet the application, network, and security performance requirements of a broad range of utility applications.

To further support advanced performance, the MDS Orbit Platform:

• Uses standards based technology
• Is ruggedized in a die-cast aluminum enclosure
• Operates in industrial temperature ranges (-40°C to +70°C)
• Provides IP routing, port forwarding and network address translation
• Leverages GE Vernova’s best-in-class quality and testing procedures

Several features have been designed into the MDS Orbit Platform to provide ease of use for customers, reducing the learning curve for new users, and reducing the time required for network deployment, troubleshooting and maintenance.

• A common web page and command line interface provides consistency across all MDS Orbit product models.
• The technology-agnostic user interface provides common nomenclature, processes and Wizards for product and network configuration.
• A USB console enables users to locally connect to devices to provision, configure and monitor status.
• Multiple communication ports allow connection to PLCs, RTUs, controllers and other end devices.
• Wall mount and DIN rail mount options allow flexibility in cabinet and enclosure installations.
• Network management with MDS PulseNET provides out-of-the-box management for MDS radio networks.

Power Transformers Bushings

OIP technology

Oil to air transformer bushings, for the connection to the HV transmission or distribution system

Oil to SF₆ for the connection to the SF₆ metal enclosed bus ducts

Oil to oil for the connection to the HV cables

RIP technology

Resin Impregnated Paper transformer bushings

Power Generator Bushings 

Generator High Current RIP bushing up to 30 kV-45000 A
PGFR 

Gas insulated technology air to air

up to 800 kV AC & DC applications 

PWS (AC solution) and PWHS (DC solution)

Up to 420 kV - PWO

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Hybrid technology for DC converter bushings (OIP + SF₆ up to 1,100 kV; RIP + SF₆ above 420 kV)

PHI

Up to 550 kV

PABS

In October 2013, an internal arc test was performed on a 420 kV RIP transformer bushing, type PNR 420 kV 1250A, in ZKU independent high voltage and high power test laboratory in Prague, Czech Republic.

The main aims of this test were to demonstrate the RIP bushing’s explosion proof capabilities, and to check its safety in the case of very dangerous events following an internal severe electrical fault.

To demonstrate this, a 420 kV normal production bushing was subject to an internal arc test with a short circuit current of 63 kA applied for 0.5 s. Safety is demonstrated if no parts are projected outside a circular safety area of 3 m radius around the bushing, and if no explosive events occur in the air side, i.e. the top part, of the bushing.

This video shows the effect of the simulated fault. The value of the measured injected energy during this test is impressive. The energy amounted to 13 MJ, which is equivalent to a 1000kg mass launched at a speed of 580 km/h or 360 mph!

This test, typical for other components such as instrument transformers, is a first for transformer bushings. In 2011 GE VERNOVA Grid was the first in the world to perform such an internal arc test on a 420 kV bushing based on the traditional oil-impregnated-paper technology and now it has repeated this success on the new 420 kV bushing, based on RIP technology.

Grid R&D teams have successfully tested our 820 kV/4500 A Bushings for HVDC converters, placing us as one of only three players to manufacture this technology. The bushings were designed in Milano, Italy and have now been fully type-tested and successfully completed their temperature rise tests over the rated current limit to confirm their suitability to meet all requirements.