Abstract Aiming at the problems that most fault location methods are applied to high voltage direct current (HVDC) transmission system, such as low accuracy and vulnerability noise, a source converter (VSC)-HVDC method based on effective feature deep belief network is proposed. Firstly, Karenbauer phase mode transform used decouple original data eliminate coupling effect between positive negati...

This paper investigates the use of multi-terminal HVDC systems to provide primary frequency support to connected AC networks via coordinated DC voltage manipulation. Control schemes for multi-terminal HVDC systems to allow redistribution of active power, based on the idea of “power priority” are proposed. Inertia response from DC connected large offshore wind farms can also be incorporated base...

For the safe and fast recovery of line commutated converter based high-voltage direct current (LCC-HVDC) transmission systems after faults, a DC order optimization strategy is proposed. Considering constraint electric control quantities, with maximum active power transfer calculated by Thevenin equivalent parameters (TEPs) quasi-state equations LCC-HVDC systems. Meanwhile, to mitigate subsequen...

This paper focuses on the engineering trade-offs in designing capacitor voltage balancing schemes for modular multilevel converters (MMC) HVDC: regulation performance and switching loss. MMC is driven by the on/off switch operation of numerous submodules and the key design concern is balancing submodule capacitor voltages minimizing switching transition among submodules because it represents th...

Recently, high-frequency oscillation of the modular multilevel converter (MMC) based high-voltage direct current (HVDC) projects has attracted great attentions. In order to analyze small-signal stability, this paper uses harmonic state-space (HSS) method establish a detailed frequency domain impedance model AC-side HVDC transmission system, which considers internal dynamic characteristics. addi...