SLOA289C May   2020  – May 2026 66AK2H06 , 66AK2H12 , 66AK2H14 , ADS8588H , AMC3301 , ISO224 , ISO7740 , ISO7741 , ISO7742 , LMZ30604 , SN65LVDS047 , SN65LVDS048A , UCC12040 , UCC12050

 

  1.   1
  2.   Introduction to HVDC Architecture and Solutions for Control and Protection
  3.   Trademarks
  4. 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
  5. 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
  6. 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
  7. 4HVDC Transmission Control and Protection – System Level Block Diagram
  8. 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
  9. 6Summary
  10. 7TI Reference Designs
  11. 8Additional References
  12. 9Revision History

2.2.5 Components for Ripple Control, Harmonic Control and Waveform Shaping

In additional to rectification and inversion, voltage regulation, control of harmonics, reactive power compensation and wave shaping is required for ensuring the HVDC station operates reliably meeting operational requirements and providing the required power output. Some of the equipments connected include:

  • Smoothing reactors: It is a coil connected to DC line that reduces ripple and harmonics in DC link, Limits over current during faults, Prevent current from being discontinuous for light loads and also helps to prevent from commutation failure.
  • Harmonic filters: Converters generate harmonics in voltages and currents. These harmonics can cause overheating of capacitors and nearby generators and interference with telecommunication systems. Harmonic filters are used to mitigate these harmonics.
  • Reactive power supply: Under steady state condition, the reactive power drawn by the converter is about 10-50% of the active power transferred and is provided by the shunt capacitor bank.
  • Earthing Electrodes: Electrodes are conductors that provide connection to the earth. They have large surfaces to minimize current densities and surface voltage gradients.