Protection System for Power Flow Controllers

Generic solution for interline PFC devices embedded in HVDC grids

Description

A generic protection system for interline power flow controllers is proposed. An effective protection algorithm manages and coordinates the PFC controllable switches and protection switches in the fault operations. The principle of the Power Flow Controllers protection system is based on the by-pass of uncontrollable PE switches for current protection while the voltage protection is guaranteed by the OverVoltage Limitation (OVL) devices across the voltage source and/or across the PFC itself. If required, Rate of Rise OverCurrent Limitation (OCL) devices are added.

TRL SCALE

TRL SCALE 2

Concepts validated in EMT simulation.

Advantages

  • Keep the design of the PFC device at MV level.
  • Decrease the cost of the design.

Applications

  • Interline Power Flow Controllers

Deliverables

  • Patent application FR1855652 + PCT
  • Technical reports
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