A5031777947- High-Voltage Power Transmission Systems
- HVDC Systems and Fault Protection
- Superconductivity in MgB2 and Alloys
- Superconducting Materials and Applications
Shandong University
2019-2020
DC short-circuit current calculation for the modular multilevel converter based multi-terminal direct (MMC-MTDC) grid is critical and fundamental in equipment selection protection setting. The existing MTDC methods suffer from low efficiency, poor adaptability, inflexibility. To address these issues, this paper proposes an efficient general companion circuit-based method to estimate currents of asymmetric bipolar grids. First, MMC equivalent RLC series circuit parallel with a time-dependent...
Short-circuit current calculation and its characteristic analysis are the foundation of selecting circuit breakers designing protection systems. First, a companion circuit-based method is presented to fast calculate short-circuit asymmetric bipolar modular multilevel converter-based multiterminal direct (MMC-MTDC) grids. With reduction whole MTDC grid into an equivalent RLC circuit, efficiently accurately solved by instead numerical integration. In addition efficiency, proposed can readily...