SLOA289B May   2020  – September 2021 66AK2H06 , 66AK2H12 , 66AK2H14 , ADS8588H , AMC3301 , ISO224 , ISO7740 , ISO7741 , ISO7742 , LMZ30604 , SN65LVDS047 , SN65LVDS048A , UCC12040 , UCC12050

 

  1.   Trademarks
  2. 1HVDC Power Transmission Overview and Architecture
    1. 1.1 Electrical Power - Generation, Transmission and Distribution
    2. 1.2 HVAC to HVDC Power Transmission
      1. 1.2.1 Comparison of HVDC and HVAC
      2. 1.2.2 Primary Objectives of HVDC Transmission
    3. 1.3 Working Principle of HVDC Transmission Station
    4. 1.4 Advantages of HVDC Transmission
  3. 2HVDC Transmission System (HVDC station)
    1. 2.1 HVDC Transmission Technologies
    2. 2.2 HVDC Transmission System (HVDC station) Key Components
      1. 2.2.1 Converter
      2. 2.2.2 Converter Valve Arms
        1. 2.2.2.1 Converter Phase Arms
      3. 2.2.3 Converter Transformers
      4. 2.2.4 Power Transmission Lines
      5. 2.2.5 Components for Ripple Control, Harmonic Control and Waveform Shaping
      6. 2.2.6 Protection Equipment
  4. 3HVDC transmission station - Control and Protection (C and P)
    1. 3.1 Control OF HVDC Transmission Station
      1. 3.1.1 System Control
      2. 3.1.2 Master Control
      3. 3.1.3 Station Control
      4. 3.1.4 Pole or Converter Control
      5. 3.1.5 Valve Base Control VBC (valve unit control)
    2. 3.2 HVDC Transmission Station Protection
      1. 3.2.1 Protection of AC Section of HVDC Station
      2. 3.2.2 Protection of DC Section of HVDC Station
      3. 3.2.3 Equipment Protection and Monitoring
      4. 3.2.4 Sampling and DC Fault Detection
    3. 3.3 Fault Recording and Monitoring
    4. 3.4 Control and Protection Panel
    5. 3.5 Diagnostics and Monitoring
  5. 4HVDC Transmission Control and Protection – System Level Block Diagram
  6. 5TI Solutions for HVDC Transmission Station Control and Protection
    1. 5.1 TI Products
      1. 5.1.1 Analog
      2. 5.1.2 Embedded Processing
      3. 5.1.3 Power Supply and Gate Drivers
      4. 5.1.4 High-Speed On-Board Interface and External Communication
      5. 5.1.5 Board Level Isolation and Protection
  7. 6Summary
  8. 7TI Reference Designs
  9. 8Additional References
  10. 9Revision History

3 HVDC transmission station - Control and Protection (C and P)

Each HVDC converter station is equipped with a control and protection system designed to operate satisfactorily under normal as well as abnormal conditions. The control system is designed to be self-protecting, efficient, has stable operation and provides maximum power control flexibility without compromising the system safety. HVDC C and P additionally ensures there are no harmful interactions between the HVDC transmission system and the AC network that may adversely affect the HVDC converter or AC network protection system or users of the transmission system. The control and protection system for both the converters (rectifier and inverter) is designed to be identical as much as possible.

The C and P system is designed to have full redundancy for all the vital systems and includes measuring, processing, switching, indicating and communicating systems. Converter control achieves the desired power transmission and AC bus voltage magnitude coupled with automatic switching of filters, capacitor and reactor banks. The open/close commands to the high voltage devices are interlocked in the controls to prevent out of-step operation of breakers, disconnectors and ground switches. Also interlocks to prevent forbidden system or switchyard configurations are installed. Interlocking to prevent personnel access to the valve hall and filter, areas that are not walk through, is provided by means of interlocks controlled by the Station Controls. Figure 3-1 provides an overview of the control and protections used in an HVDC station.

GUID-7E6A9DE1-9456-4418-B261-F2490FAC4E15-low.pngFigure 3-1 HVDC Transmission Station – Control and Protection