NS2000 Integrated Substation Automation System

• Substation of various voltage-level, switchyard and power plant.
• Substation with people on duty, few people on duty or no people on duty.
• Automation system of newly constructed substation and renovated old substation.
• Integrated installation mode, distributed assembly mode and compatible mode with characteristics of both.
• Protection and supervision independent configuration, protection and supervision integrated configuration.
• Intelligent equipment connection via field-bus, intelligent equipment connection via 10M/100M Ethernet.
  
  2. Other fields
  
• Process supervision and control of subway, light rail, electrization railway and highway.
• Application in mine, petrochemical, metallurgy, haven, water supply, environment protection, and other industries.
  
  Functions
  
  1.Supervision function
  
• Data collection (status value, AC/DC analog value, pulse value) and processing
• Alarm and event recording
• History data recording
• Graphic function
• Display and print
• Report function
• Post disturbance review
  
  2. Control function
  
• Support selective control function for multiple remote control centers
• Local control function for control room computer supervisory system
• Local control function for bay level equipment
• Synchronization testing and synchronized switch-on function
• Automatic control based on IEC1131 configuration
• Station-wide logic interlocking based on IEC1131 configuration
• Reactive power voltage automatic regulation
  
  3. Protection function
  
• Line and feeder protection
• Transformer and reactor protection
• Electromotor protection
• Generator protection
• Capacitor protection
  
  4. Configuration function
  
• System configuration
• Graphic configuration
• Database configuration
• PLC control function configuration based on IEC1131-3 standard
  
  5. Communication function
  
• Multiple communication interfaces (RS232, RS422, RS485, CAN, LONWORKS, Ethernet, electric power carrier, cable, wireless and fiber etc) that support various of media and networks
• High speed data network communication with measuring and controlling unit
• Data network communication with various microprocessor-based relay protection
• Data network communication with various intelligent devices (computer-based DC system, intelligent power meter, intelligent fire alarm, and GPS, etc.)
  
  6. Advanced functions
  
• Reactive power voltage automatic control
• Embedded PC-based maloperation prevention function
• Small current neutral grounding fault-line selection
• Operation ticket and maloperation prevention interlocking
• System diagnosis and self-recovery
• Remote supervision and maintenance
• Technical characteristics
• Opened system based on international standard
• Provide integrated automation total solution for substations of various voltage-level
• Employ 10M/100M self-adaptive redundant Ethernet and direct network link of bay-level equipment to improve system real-time ability and data transmission reliability
• Bay-level equipment realizes logic interlocking of station-wide control and operation not rely on station-control layer through network data sharing
• Based on real-time multi-task operating system software platform to improve system reliability and real-time performance
• Develop computer supervisory control system that combines business and real-time databases, is object oriented and with integrated graphic, model and database. The software's structure is both advanced and open. The system functions are practical and refined with friendly man-machine interface. It supports supervisory control of multiple substations and can be used in centralized control stations.
• Developed ladder diagram and execution software based on IEC1131-3 standard to realize standard PLC function
• Possess favorable EMC capability (its measuring and controlling unit for super high-voltage equipment has passed level-4 test).
  
  Technical Parameters
  
  1. System capacity
  
• Analog input 2048
• Digital input 4096
• KWH 512
• Digital output 1024
• Analog output 64(all expandable)
  
  2. Data collection and control
  
• Measurement precision of analog value U,I: 0.2%, P, Q: 0.5%
• Cycle measurement 0.01HZ
• Percentage of digital input response accuracy 100%
• Sequence of event resolution 1ms
• Percentage of digital output and analog output accuracy 100%
  3. Protection performance
  
• Group action time of the 1 segment distance relay <20ms
• High frequency or optic-fiber relay action time <30ms
• Impedance settings 0.01-30(In=5A), 0.05-150(In=1A)
• Fault location error <3%
• Minimum precise operating voltage 0.5V
• Minimum precise operating current 0.1In
• Maximum precise operating current 25In
• Settings error <5%
  
  4. System response time
  
• Variation transfer of analog input 2s
• Change of state response time of digital input 2s
• Updating cycle of all digital input and remote pulse 30s
• Digital output and analog output command 2s
• Display response time 2s
• Display refresh time 3s
  
  5. Fail-over time between host and backup computer 10s
  
  6. Reliability index:
• MTBF 30000 hours
  
  7. EMC performance (Note: NSD500 unit reaches level-4 completely)
  
• Static discharges anti-interference capability:
  IEC61000-4-2 standard level 3.
• Radiated electromagnetic field anti-disturbance capability:
  IEC61000-4-3 standard level 3
• Fast transient pulse group anti-interference capability:
  IEC61000-4-4 standard level 3
  
• Impulse (Surge):
  IEC61000-4-5 standard level 3
• Anti conductive disturbance of Electra-magnetic induction capability:
  EC61000-4-6 standard level 3
• Power frequency magnetic field anti-interference capability:
  IEC61000-4-8 standard level 3

Engineering Application

This system has been widely used in substations of various voltage-level and scales.