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  • PCS-9705 Bay Control Unit

  • PCS-9705 Bay Control Unit (abbreviated as BCU) is used for bay level controlling and monitoring in power grid. It is suitable for application in Substation Automation System (abbreviated as SAS) with distributed control IEDs. 

    PCS-9705 can be applied into SAS via Ethernet network in using NR private 103 protocol or IEC 61850-8-1. It can also send/receive Generic Object Oriented Substation Event (abbreviated as GOOSE) message in station level network.

    PCS-9705 is designed for controlling and monitoring switchgears such as circuit breaker, disconnector, and earthing switch. Additionally, it supports tap changer control for transformer and shunt reactor.

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  • Measurements of current, voltage, frequency, harmonic (up to 15th), power factor, active/reactive power and energy
  • Remote/local control of circuit breakers, isolators and earth switch
  • Monitoring of circuit breaker, isolators and earth switch
  • Operation counter of circuit breaker
  • SBO (Select Before Operate) for remote control
  • Implementation of AGC (Automatic Generator Control) command (optional)
  • Programmable Interlocking logic
  • Synchro-check closing for circuit breakers
  • Interface to transducer inputs or RTD inputs for temperature
  • Tap position supervision of transformer
  • Supervision of busbar VT failure
  • Tripping circuit supervision
  • Bay mimic display in large scale LCD
  • Master tripping lockout
  • Voltage and current drift auto adjustment
  • Self diagnostic test
  • Total 1024 SOE, including alarm, binary input change and human operation reports
  • Up to 4 Ethernet ports with IEC 61850-8-1 for station bus
  • 2 optional fiber Ethernet ports for process bus, support GOOSE and IEC61850-9-2
  • 2 RS-485 communication rear ports conform to IEC 60870-5- 103 protocol
  • 1 RS-485 communication rear ports for GPS clock synchronization, supports PPS, IRIG-B, SNP and IEC1588.
  • 1 RS-232 communication rear ports for printer
  • 1 front plate RJ45 port for testing and setting
  • PCS-9705 adopts a fully closed chassis with a complete panel. Completely isolation for electronic and electrical system is provided.
  • Back plug-in module structure is adopted. Electrical and electronic circuits are strictly separated to enhance EMC immunity performance.
  • PCS-9705 adopts NR's new UAPC hardware platform, 16 bits parallel A/D converter, graphic dot matrix LCD, and real time multi-task operating system for industrial purpose so as to realize the high-capacity, high-precision, fast and real-time information processing. With the high-precision parallel A/ D converter, synchronization sampling can be conducted for all the AC signals to ensure the accuracy of analog quantity measurement (up to the 15th harmonic component).
  • Software and hardware clock synchronization are both adopted with 1ms timing accuracy to ensure the resolution of Sequence Of Events (abbreviated as SOE).
  • Large scale LCD providing graph and text makes a convenient human-machine interaction.
  • Duplex Ethernet ports with optical fiber or twisted-pair cable are provided.
  • Low power consumption and wide ambient temperature range.Support of IEC61850 and NR private 103 protocols to fulfill all the requirements of substation communication.