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's Grid Solutions' EBoP systems cater to all types of project requirements including supplying equipment, engineered packages, and full engineering, procurement and construction (EPC) implementations.

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

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

SF6 (or Sulphur Hexafluoride) has been the standard gas used inside high voltage electrical equipment as an insulating and arc-quenching medium. However, SF6 is also listed as a potent greenhouse gas according to the Kyoto Protocol, with 24,300 times the comparative Global Warming Potential (GWP) of CO2 and a lifetime of 1,000 years in the atmosphere. With grid operators across the world becoming increasingly concerned about the environmental impact, we offer a commercially available and viable alternative to SF6 to help utilities and industries reduce their environmental impact.

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.

The GridBeats™ portfolio is designed to streamline grid digitalization, improve grid resilience, and empower utilities to manage their networks remotely, particularly in the face of the energy transition.

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

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

Business environment is constantly transforming for substation owners but the need to deliver consistent outcomes remains. That’s where a Flexible Service Agreement can help. By partnering with GE Vernova on a long term, customers can realize the full potential of their electrical substations and network assets while balancing performance and investment, along with predictable costs and flexible billing arrangements, letting them get back to focusing on what matters.

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’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
Banner photo
Protection Relays
Legacy Bus Protection

Home > Grid Automation > Protection Relays > Legacy Bus Protection > B95Plus

Related Links
  Interactive Selector Guide
  Typical Applications
  Bus Principles & Protection
  Application Notes
  Industry Expert Talks
  Legacy Bus Protection

  
B95Plus – Legacy

Manufacturing for this product has been discontinued. As an alternative, please refer to the B30, P747 and P74x relays.

The Multilin™ B95Plus Bus Protection System is the ideal solution for one of the biggest challenges for large bus protection: the time and cost involved in the design, installation and commissioning of the field wiring between measurements from the switchyardand the bus protection relay in the room. The HardFiber Brick, the environmentally hardened distributed bay unit of the B95Plus bus protection relay, directly reduces the time and costs involved in field wiring in both the short term and the long term.

Save time and money in the short term with flexible mounting options for the HardFiber Brick bay unit. The compact size and rugged design allows for installation in the switchyard, in equipment cabinets or in the control room. Data signals are converted to digital signals per the IEC 61850 standard and communicated over a single fiber optic cable. Installation next to the primary signal source virtually eliminates all field wiring.

To save money in the long term, use the HardFiber Brick bay unit as an IEC 61850 process bus merging unit. This becomes the complete I/O interface for protective relays and all zones of protection. Relay installation for any future zone of protection becomes plug-and-play: mount the relay on a panel, plug the relay into the HardFiber Brick bay unit and commission.

Key Benefits

  • Reduce field wiring costs by replacing multiple copper wires and terminations with a fiber optic cable
  • Save installation costs by mounting the bay unit in harsh environments without requiring specialized enclosures
  • Increase savings by connecting other relays to the same process bus bay unit
  • Protect six three-phase differential zones with one central device
Field Wiring
Hardware
Protection
Applications
Process Bus
Specifications

Field Wiring

We Solve the Field Wiring Challenge with the B95Plus Bus Protection System

The Multilin B95Plus Bus Protection System changes the focus of bus protection to that of application by replacing most of the field wiring with distributed I/O and fiber optic cables. The bus protection system consists of a distributed process interface (data acquisition and tripping) architecture using HardFiber Bricks as bay units, with centralized processing performed by the B95Plus protection relay. All copper field wiring is between primary equipment in the switchyard and Bricks, which ideally should be located at the primary equipment in the switchyard. Fiber optic cables connect Bricks to the B95Plus. For all applications, the installation is then identical: the physical interface consists of Bricks connected to a fiber optic cable. A single B95Plus is mounted in a relay cabinet, with the process cards in the unit patched to the fiber optic cables coming from the Bricks.

HardFiber Brick System

The HardFiber Brick System can easily be incrementally scaled to include new equipment as stations evolve. Duplicated Bricks in the switchyard provide a drastic improvement in reliability and security over today’s technology.

HardFiber Brick system

Hardware

b95plus photo

Multilin B95Plus Bus Protection Relay

The B95Plus bus protection relay unit is the heart of the system. This unit performs all processing functionality, including protection functions, metering, monitoring, FlexLogic and SCADA communications.

  • Simplifies use through a Graphical User Interface (GUI) that includes configurable single line diagrams for bus sources, local control and status indication of breakers and disconnects, 20 programmable pushbuttons, and a configurable digital alarm annunciator
  • Connects up to 8 Bricks for each process card while, supporting up to 12 bus sources per card
  • Supports 2 process cards per unit, for a total of 16 Bricks and 24 bus sources
  • Provides identical connections and installation for all bus configurations
HardFiber Brick

HardFiber Brick as Bay Unit

  • Measurement and control for primary apparatus, including AC measurements (4 currents and 4 voltages, or 8 currents) and contact I/O (18 digital inputs and 7 digital outputs including a latching relay)
  • Simple device with no field configuration or configuration settings
  • Environmentally hardened for outdoor mounting in switchyards
  • Connectorized cables for simple, tools-free field installation and removal
  • IEC 61850 message formats for communications, including sampled value messaging for currents and voltages
HardFiber Cables

Cables

The HardFiber Brick uses connectorized cables to interface with primary equipment and with system measurements, and to interface to the B95Plus itself. The cables at the Brick end uses an IP67 certified industry standard connector designed for rugged environments. These connectors screw onto the Brick for a simple, tools-free connection. Three of the cables are copper cables used to acquire AC measurements, acquire equipment status, and provide equipment control. The fourth cable provides the fiber interface to the B95Plus central unit as well as DC power to the Brick. These cables therefore can become standard parts, manufactured in advance of installation by any cable manufacturer. These cables are also directly available from GE.

Protection

The B95Plus bus protection relay system provides robust and reliable protection for all bus protection applications. Highlights of the protection functions related to bus protection include:

  • Multi-zone differential protection with both restrained (dual-slope percent or biased) and unrestrained (unbiased or instantaneous) functions incorporated.
  • Differential protection is fast (typical response time: 1 power system cycle) and secure. Security is achieved by using a fast and reliable CT saturation detection algorithm and a phase comparison operating principle. Security is further enhanced by support for redundant process interface units (Bricks). Supports both three-phase tripping and individual phase tripping.
  • Dynamic bus replica functionality and multi-zone protection (up to 6 zones) is supported allowing application of the B95Plus to multi-section reconfigurable buses. A zone expansion/contraction to an open breaker feature is included. Isolator position monitoring for up to 48 isolators.
  • Check-zone functionality configured by programming one of the differential zones to enclose the entire bus.
  • Additional bus protection functions including end fault protection, breaker fail and overcurrent protection for each bus source, CT trouble monitoring for each bus zone.

Multilin B95Plus Functional Block Diagram

Multilin B95 Plus Functional Block Diagram

ANSI Divice Numbers & Functions

Device Number Function
87B Percent bus differential
27 Undervoltage
50 Instantaneous overcurrent
50/74 CT Trouble
Device Number Function
50/87 Unrestrained Bus Differential
51EF End fault protection
51 Time overcurrent
50BF Breaker failure

Applications

  • Reconfigurable multi-section bus bar with up to 24 feeders
  • Retrofit and greenfield installations for power generation, transmission and distribution systems
  • Reconfigurable bus bars for single bus, breaker-and-a-half and double bus with and without bus couplers
  • Air-insulated and GIS stations

Standardize on the B95Plus for Any Bus Configuration

The B95Plus can be applied on a multitude of bus configurations due to the distributed architecture, and includes support for up to 6 zones of bus differential protection and support for up to 24 bus sources. The physical connection and wiring architecture for the B95Plus system will be identical for any bus configuration: Bricks installed to acquire measurements and equipment status, with the B95Plus unit connected to Bricks via fiber optic cables. The relay panel design will be identical for all applications, for all bus configurations. The only difference from application to application is the number and location of Bricks, and the programming of the B95Plus unit.

Some typical bus configurations that can be protected by the B95Plus:

B95 Plus - Typical single bus Application Two single buses with a bus coupler
B95 Plus - typical double bus Application Double bus with a bus coupler
B95Plus - typical breaker-and-a-half application Breaker-and-a-half arrangement

Process Bus

Quickly Expand Protection through Process Bus

The B95Plus Bus Protection System is intended to operate as a standalone, distributed bus protection system. The bay units for this system are Bricks, part of the HardFiber IEC 61850 process bus solution. Once the Bricks for the B95Plus are installed process bus data is available for use for any other zone of protection. The Bricks, then, are a distributed I/O interface for all protection functions and zones, not just the B95Plus. With the B95Plus in place, installing line protection or feeder protection is a simple process: mount the relays in a panel, and patch to the fiber optic cable from the appropriate Bricks. The only requirement is the relays must implement the appropriate IEC 61850 datasets to interface successfully with the Bricks. All members of the Universal Relay family have the ability to interface with Bricks.

B95 Plus - Process Bus application diagram Expand protection through process bus

Specifications

BUS DIFFERENTIAL PROTECTION
Number of differential zones Six 3-phase zones
Max number of currents: Total dynamic number of bus source to zone connections closed at any one moment in time up to 120
CT ratio compensation range 32:1
Operating time < 1 power system cycle - typical bus fault
BUS REPLICA
Features Dynamic bus source current assignment to each zone, dynamic zone trip assignment to each bus source, dynamic blocking of zones on CT bypassed, 1 user programmable auxiliary zone trip inputs, 3 user programmable bus source trip inputs, dynamic zone expansion/reduction
BUS SOURCES
Number of bus sources 12 per process card included in the order code
Current inputs 3-phase currents
CT rated primary 1 to 65000 A
CT rated secondary 1 A or 5 A
Nominal frequency 50 or 60 Hz
CT Trouble Monitoring 1 element per bus source
Breaker failure protection 1 element per bus source
Instantaneous Phase Overcurrent 1 element per bus source
Inverse Time Phase Overcurrent 1 element per bus source
VOLTAGE SOURCES
Number of voltage sources 2 per process card included in the order code
Voltage inputs 3-phase voltages, wye or delta
VT ratio 1.00 V to 24000.00 /td>
VT rated secondary 25.0 V to 240.0 V
Nominal frequency 50 or 60 Hz
ISOLATORS
Number of isolators 48 per process card included in the order code
Isolator status inputs Form “a” and form “b” contact inputs, each optionally dual redundant
Configurable failsafe modes 2Open, closed, last valid state
Monitoring Alarm on inconsistent inputs persisting longer than a user set time
TRANSIENT RECORDER
Storage capacity Five records with all channels recorded, at 128 samples per cycle, spanning 1 second with no retriggers
Number of records 1, 2, 5, 10, 20, 30, 40, or 50 records
Sampling rate 16, 32, 64 or 128 samples per power cycle
AC waveform channels All enabled bus sources and voltages sources
Analog channels Magnitudes and angles of all ac waveforms recorded plus all enabled zone differential and zone restraint phase current magnitudes and angles
Digital channels 128 user configurable channels on the main card and 128 user configurable channels on each process card
Configurable digital data Any FlexLogic™ operand
Storage modes Automatic overwrite, protected
Triggering modes Time window from rising edge of trigger, continuous recording up to 4 additional basic record lengths as long as retrigger is active
Pre-trigger window 0 to 100% of the basic record length
Data storage non-volatile memory
EVENT RECORDER
Storage capacity 8,192 events plus 8,192 events on each process card
Time tag: to 1 µs
Triggers all FlexLogic™ operand activations
PROCESS I/O
Number of process bus ports 8 per process card
Port type 100Base-BX-D, in SFP package with LC 50/125µm multi-mode connector
Transceiver diagnostics per SFF-8472
Brick synch frame jitter ±1µs
POWER SUPPLY
Nominal DC voltage 125 to 250 V
Minimum DC voltage 80 V
1Maximum DC voltage 300 V
Nominal AC voltage 100 to 240 V at 50/60 Hz
Minimum AC voltage 80 V at 48 to 62 Hz
Maximum AC voltage 275 V at 48 to 62 Hz
Voltage withstand 2 × highest nominal voltage for 10 ms
Voltage loss ride-through 200 ms duration at nominal input voltage
Power consumption 150 VA maximum
PROCESS CARD OPTICAL
Number of transceivers 8
Transceiver type: Transmit 1550 nm, receive 1310 nm, 100Mb/s, bi-directional single-fiber 50/125µm multi-mode module (levels comply with IEEE 802.3 standard 100Base-BX-D)
Optical transmit power –14 to –8 dBm
Maximum optical input power –8dBm
Optical receiver sensitivity –30dBm
Termination LC fiber connector
Laser class Class 1. This product is eye-safe under all operating conditions.
REMOTE RESOURCE SPECIFICATIONS
Number of field units 8 per process card
Number of field contact inputs 1 for each brick contact input
Number of field contact outputs 1 for each brick contact output
Number of field latching outputs 1 for each brick latching output
Number of shared inputs 16 per process card
Number of shared outputs 16 per process card
APPROVALS AND CERTIFICATION
Compliance CE, UL, ISO
Compliance Applicable Council Directive According To
CE Low voltage directive EN 60255-27
(normative sections)
  EMC directive EN 60255-26 / EN 50263
EN 61000-6-5 (Area G)
UL cULus UL 508
UL 1053
C22.2 No 14
ISO Quality management system ISO 9001