GE MiCOM Agile P54A, P54B, P54C & P54E Multi-ended Line Differential Protection System

$1.00

Multi-ended Line Differential Protection

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.

  • 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 tele-protection 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
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Description


  • 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

 

Key benefits:

  • Powerful graphical Programmable Scheme Logic (PSL) customise relay logic
  • Real-time monitoring of remote, local and differential per-phase currents
  • Oscillography – 48 samples/cycle, up to 10.5 seconds record length
  • Event Recorder – 1024 time tagged events, time tagged to a resolution of 1 ms

 

Programmable Scheme Logic:

Powerful graphical logic allows the user to customise the protection and control functions (see Figure 10). The logic includes 32 timers, gates (OR, AND, MAJORITY) and set/reset latch functions, with the ability to invert the inputs and outputs and provide feedback.

The system is optimised to ensure that the protection outputs are not delayed by PSL operation.  The programmable scheme logic is configured using the graphical S1 Agile software. The relay outputs may be configured as latching (lockout) or self-reset. All aspects of MiCOM P40 IED configuration are managed using the S1 Agile software.

MiCOM Agile Models:

P54A compact (40TE), economical line differential protection without VT inputs, offering non-directional backup protection.

P54B compact (40TE), economical line differential protection with directional back-up protection and inbuilt reclosing and check synchronisation.

P54C transmission-class 1/3-pole tripping line differential protection with backup protection and inbuilt reclosing and check synchronism

P54E transmission-class 1/3-pole tripping line differential protection with back-up protection and inbuilt reclosing and check synchronism with a large number of binary I/O for traditional hardwired schemes

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