ALSTOM GE Transmission Protection

Key features:

• Current differential protection for up to 6 line or cable ends, maximising connection of renewable generation, reducing greenhouse gas emissions
• Subcycle tripping time up to 4-ended topology (<1.25 cycle for 5 or 6 ends)
• Highly selective and sensitive unit protection, with capacitive current compensation for long lines or cables
• Ability to locally take any end off-line for maintenance
• Full support of SONET/SDH channel switching
• Suitable for direct fibre and multiplexed (IEEE C37.94) networks, including MPLS systems
• Full suite of monitoring, control and recording capabilities plus fault locator, autoreclose and check synchronism
• 8 teleprotection logic bits from and to each end via MODEM, fibre, or MUX channel
• Compatibility with modern Ethernet communications equipment
• New CT saturation technique reduces CT dimensioning requirements and saves on scheme cost
• Advanced IEC61850 Edition 2 implementation with complete settings via SCL files
• Redundant communications with zero downtime using optional PRP/HSR protocols
• Wide range of supported protocols Courier/K-Bus, IEC 60870-5-103, DNP 3.0 (EAI-485 or Ethernet) and IEC 61850 Edition 2
• Harsh environment coating as standard to all MiCOM relays to protect against corrosive gases such as H2S or SO2

The MiCOM P54A/B/C/E range is designed for overhead line and cable applications up to 6 terminals, interfacing readily with the longitudinal (end-to-end) communications channel between line terminals. Previously, transmission and distribution circuits would have two or three ends only, whereas five or more ends are becoming common to connect renewable generation. All models are ready for protection topologies ranging from two to six terminals, whether those multi-terminals exist now, or are provisioned for connection in the future.

Multi-ended current differential protection uses a high-speed and innovative biased differential characteristic. Phase-segregated differential elements provide consistent detection of solid and resistive faults.

Key features:

• Current differential protection for up to 6 line or cable ends, maximising connection of renewable generation, reducing greenhouse gas emissions
• Subcycle tripping time up to 4-ended topology (<1.25 cycle for 5 or 6 ends)
• Highly selective and sensitive unit protection, with capacitive current compensation for long lines or cables
• Ability to locally take any end off-line for maintenance
• Full support of SONET/SDH channel switching
• Suitable for direct fibre and multiplexed (IEEE C37.94) networks, including MPLS systems
• Full suite of monitoring, control and recording capabilities plus fault locator, autoreclose and check synchronism
• 8 teleprotection logic bits from and to each end via MODEM, fibre, or MUX channel
• Compatibility with modern Ethernet communications equipment
• New CT saturation technique reduces CT dimensioning requirements and saves on scheme cost
• Advanced IEC61850 Edition 2 implementation with complete settings via SCL files
• Redundant communications with zero downtime using optional PRP/HSR protocols
• Wide range of supported protocols Courier/K-Bus, IEC 60870-5-103, DNP 3.0 (EAI-485 or Ethernet) and IEC 61850 Edition 2
• Harsh environment coating as standard to all MiCOM relays to protect against corrosive gases such as H2S or SO2

Application:

Adapted to suit many different substation and protected feeder topologies:

• Current differential protection for up to 6 line or cable ends, maximising connection of renewable generation, reducing greenhouse gas emissions
• Highly selective and sensitive unit protection, with capacitive current compensation for long lines or cables
• Ability to locally take any end off-line for maintenance
• Transmission and subtransmission:  P54C and P54E use the same hardware as well-proven MiCOM Agile P543 and P545 models, offering scalability for large numbers of binary inputs/outputs
• Distribution: P54A and P54B offer compact feeder differential in a 40TE half-rack case

Supplier of Alstom GE D60 Line Distance Protection System- Line Differential Protection Relays Dealers-High-speed transmission line protection with flexibility for three or single pole tripping. The D60, a member of the UR Family of protection relays, is a numerical line distance protection system, which provides protection for medium to extra high voltage transmission lines and an integrated system providing control, automation, metering, synchrophasors, monitoring and communications in one easy to use package. Use the D60 on applications requiring fast single or three phase tripping, single or three pole re-closing, series compensated lines, with multiple breakers per terminal. Distance protection has been tuned to meet the rigorous application requirements of IEC-driven end-users. Distance protection has been tuned to meet the rigorous application requirements of IEC-driven end-users. Distance protection has been tuned to meet the rigorous application requirements of IEC-driven end-users.

Trader of Alstom GE D30 Line Distance Protection System- Line differential Protection Relays dealers,GE Multiline Numerical Relays- The D30 is a cost-effective distance protection system suitable for primary protection of sub-transmission lines and as a backup protection for HV, EHV lines, reactors and generators. The D30 provides five zones of phase and ground distance protection along with complete overcurrent and voltage protection functions intended for three-pole tripping applications. The D30 comes with versatile automation features using custom pilot schemes, which can be built.

Key Benefit

• Cost effective, five zone quad or mho, phase and ground distance protection
• Advanced IEC 61850 Ed. 1 and Ed. 2 certified implementation, complete settings via SCL files and flexible process bus support (IEC 61850-9-2LE or IEC 61850-9-2 Hardfiber) ensures interoperability, device managing optimization and reduced cost of ownership
• Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation, which enables wide area protection and control applications
• Programmable logic for building customized pilot schemes
• Reduced relay-to-relay wiring and associated installation costs
• Simplified teleprotection interfaces with direct I/O communications hardware
• Robust network security enabling Critical Infrastructure Protection
• Application flexibility
• Ambient temperature monitoring
• Application flexibility with multiple I/O options including high density I/O, programmable logic, modularity, and specific customization
• An integrated large, full color display, provides real-time visualization and control of the protected bay, via a bay mimic as well as annunciator functionality and graphical visualization of phasors

ALSTOM GE MiCOM Agile P443, P445, P446 Distance Protection Systems-ALSTOM GE MiCOM Agile P591,592,593 numerical relays pricings- get online-  This range of MiCOM standalone units enables the MiCOM Agile P54x current differential relays and MiCOM relays with InterMiCOM64 to be connected to remote pulse code modulation (PCM) multiplexing equipment.

Flexibility, secure connections and clear visualization

The MiCOM Agile P591, P592 and P593 range offers the flexibility to use current differential protection over integrated services digital network (ISDN), multiplexers and modem connections. Its loopback facilities can be used to simplify the differential scheme test. The range also provides clear visual indication for easy diagnostic and testing.

The interface options are:

• P591 - Fiber optic to electrical signal G.703 (co-directional) 64 Kbit/s or 2Mbit/s
• P592 - Fiber optic to electrical signal V.35
• P593 - Fiber optic to electrical signal X.21

• Its flexibility means it can be used with different bus-bar arrangements.The MiCOM Agile P842 Mesh Corner Reclose unit (MCU) provides a flexible, distributed scheme for delayed auto-reclose (DAR) and auto-isolation of a mesh bus station. 
• High-speed peer-peer communications
• The MiCOM Agile P842 uses high-speed peer-peer communication facilities over ethernet, and provides for the automatic reclosure of circuit breakers. It also ensures automatic isolation of a persistently faulted plant and suppresses ferro-resonance following a system fault.
• The equipment is provided on the basis of one MCU per mesh corner. Although each MCU is an autonomous unit, inter-unit communications guarantees co-ordinated control of a complete mesh system.
• Flexibility for easy commissioning and fault-finding
• The MiCOM Agile P842 ensures that only the faulted electrical plant is isolated for permanent faults. It provides flexibility for different busbar arrangements, carries out system checks, and suppresses ferro-resonance. MiCOM Agile P842 is equipped with real time peer-peer communications and allows easy commissioning and 'fault-finding'.
• About MiCOM P40 Agile
• Agile’s philosophy is one of continuous improvement in our products and solutions. Our emphasis on communication in MiCOM has become a focus which secures leadership in the digital substation. To mark this phase of evolution, the brand “P40 Agile” is applied to the range. P40 Agile is a mark of performance and quality, proudly available from Agile, and only from Agile.

Accurate time synchronization is required to coordinate the actions of protective relays, generator controllers, distributed resources, power system controllers, energy storage, and microgrids. Every device must be synchronized to the same time source to ensure coordinated action. Traditional time synchronization methods have shortcomings, such as the separate analog copper wiring required for IRIG-B or the lower accuracy of SNTP/NTP over Ethernet networks.

The MultiSync™ 100 uses the IEEE Standard 1588-2008 for Precision Clock Synchronization Protocols used in Networked Measurement and Control Systems, as well as the C37.238-2011 IEEE Standard Profile used in Precision Time Protocols within Power System Applications. As a result, the MultiSync 100 provides highly accurate time synchronization, and allows for the gradual retirement of less accurate or more costly methods.

Key Benefits

Supports latest 1588-2008 and C37.238-2011 standards for Ethernet-based time synchronization
Upgrade existing substations to 1588 support without replacing existing time synchronization infrastructure
Provides accurate time synchronization for protection and control applications through Multilink Ethernet switches, Universal Relays, and 8-Series relays
Designed and tested specifically for rugged environments such as utility substations

The L90 provides high-speed current differential protection suitable for transmission lines and cables of various voltage levels, while supporting complete distance protection and dual-breaker applications suitable for single and three-pole tripping applications. The L90 uses synchronized sampling at each relay to limit the impact of communications channel issues. The differential element's adaptive restraint balances sensitivity for internal faults and security during external faults. The L90 supports inter-relay protection communications via direct fiber as well as different interfaces.

Applications

Overhead lines including series-compensated lines and underground cables of different voltage levels
Circuits with tapped transformer feeders
Suitable for three-terminal line configurations, with channel redundancy and direct transfer tripping (DTT)
Wide area system monitoring and control and using integrated protection and synchrophasor measurement
Single and dual-breaker circuits requiring single/three-pole autoreclosing and independent synchrocheck supervision
Secure application with Capacitively-Coupled Voltage Transformers (CCVTs)

Key Benefits

• Phase-segregated differential protection ensures secure high-speed single-pole tripping
• High-speed cost-effective five zones quad or mho, phase and ground distance protection with multiple standard and customizable pilot schemes support
• Reliable and secure protection on lines equipped with series compensation
• Increased sensitivity through dynamic charging current compensation and communication channel asymmetry compensation
• Phasor Measurement Unit (synchrophasor) according to IEEE C37.118 (2011) and IEC 61850-90-5 support
• Three independent fiber or copper Ethernet ports for simultaneous/dedicated network connections with 1 microsecond time synchronization via LAN with IEEE 1588 support
• CyberSentry™ provides high-end cyber security aligned to industry standards and services (NERC CIP, AAA, Radius, RBAC, Syslog)
• AAdvanced IEC 61850 Ed. 1 and Ed. 2 certified implementation, complete settings via SCL files and flexible process bus support (IEC 61850-9-2LE or IEC 61850-9-2 Hardfiber) ensures interoperability, device managing optimization and reduced cost of ownership
• Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation, which enables wide area protection and control applications
• Application flexibility with multiple I/O options including high density I/O, programmable logic, modularity, and specific customization
• An integrated large, full color display, provides real-time visualization and control of the protected bay, via a bay mimic as well as annunciator functionality and graphical visualization of phasors

MiCOM P441, P442 and P444 are numerical, full-scheme distance relays that provide protection control and monitoring of transmission lines.

These numerical full-scheme relays provide flexible and reliable protection control and monitoring of transmission lines. They can be applied to high and extra-high voltage systems and operate extremely quickly and securely.

Proven algorithm basis for customized protection control
For use in high and extra-high voltage systems, this MiCOM relay family can be applied to a wide range of overhead lines and underground cables. Their functioning is based on a patented, proven algorithm with more than two decades of established field experience.

MiCOM P441, P442 and P444 offer unparalleled speed, security and selectivity all in one. Designed to protect and control any kind of power system fault, their wide range of communication options help in easily connecting them to any type of Digital Control System or SCADA.

InterMiCOM, an optional protection communication interface and a powerful programmable graphic scheme logic, enable users to develop customized protection schemes and solutions.

Fast, safe operations
Based on dual algorithms and polygonal characteristics, the MiCOM P441, P442 and P444 deliver fast operating times as low as 0..85 cycles.  Offering a wide choice of channel-aided schemes, this MiCOM family provides Powerswing detection and Out-of-Step protection. Users may also choose from multiple communication protocols and interfaces options, including IEC61850.