Due to the scalability and flexibility in power transmission, the Modular Multilevel Converter (MMC) receives a widespread favor since its advent. The popularization of the MMC will continuously promote the developments in renewable energy grid connecting and flexible High Voltage Direct Current transmission (HVDC) system. In this paper, an overview of the most recent effort associated with the...

Abstract This paper proposes a reactive power and SVG coordinated control method for HVDC transmission system. The includes calculating the ΔQ exchanged between converter station AC Set dead zone range of limit output ΔQ. restriction condition SVG’s ability to adjust judge whether emitted by is restricted. Based on sent limited limitation results ΔQ, input PI controller in QPC module calculated...

High voltage direct current (HVDC) transmission system has the advantages of large capacity, long distance and low loss. Relying on HVDC transmission, China established a large-scale energy channel in west, effectively solving problem uneven local distribution. However, will generate ground when it is operating single pole, which cause DC bias effect transformer. At this time, core magnetic cir...

This paper presents an Improved Multi-Objective Marine Predators Optimizer (IMMPO) for optimal operation of hybrid AC and multi-terminal-high voltage direct current (AC/MT-HVDC) power systems. The proposed IMMPO incorporates external repository to conserve the non-dominated preys. Furthermore, fuzzy decision making is employed select best compromise operating point AC/HVDC In these systems, act...

Remote offshore wind power plants are expected to be connected via HVDC systems to the main grids. The extension of single point-to-point HVDC systems into meshed HVDC grids is discussed actively. This leads the integration of DC technology into the collection grid of the wind farm to gain interest and relevance. Using DC technology in the collection grid demands the wind turbine systems to hav...

Offshore wind farms have recently emerged as promising renewable energy sources. For increasing distances between offshore generation and onshore distribution grid, HVDC transmission systems based on voltage source converters can be a feasible and competitive solution. This thesis presents a comprehensive evaluation of a novel integrated wind farm topology that includes the generator drive syst...

In recent years, there has been an increased development and deployment of renewable energy resources to meet the ever increasing electric power demand and to limit the use of fossil fuels. This has spurred offshore wind farm development, particularly in the North Sea, due to the vast offshore wind energy potential. Large scale wind farms in the North Sea pose grid integration challenges such a...

High voltage direct current (HVDC) technology is a key component in power systems owing to huge benefits such as long-distance transmission, lower losses, asynchronous grid interconnections, controllability, system availability, and limited short-circuit currents. HVDC transmission cost-effective method of transporting amounts across long distances with little loss. It can also link alternative...

Modular multilevel converter-based high voltage direct current (MMC-HVDC) has a broad application prospect in renewable energy transmission. With the development of converter capacity, transmission capacity calculation for MMC-HVDC grids becomes important power dispatching. The existing method depends on manual work and is suitable simple grid. However, as grid structure operation modes become ...