Optimizing HVDC control parameters in multi-infeed HVDC system based on electromagnetic transient analysis

HVDC transmission system using multilevel power converters based on dual three-phase two-level inverters

“…Applying the transformations (4) and (16) to the previous equation, the switching function (17) in the ab fixed frame can be obtained [39].…”

“…A HVDC system that consists in more than two converters connected through an HVDC network, called a multi-terminal HVDC system [4], allows connecting multiple generators and AC grids. Due to these characteristics, HVDC technology can be used as a solution to recent problems of power grids, such as, network congestions, wind farms connection, multi-terminal operation and asynchronous connection [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19].…”

“…A HVDC system that consists in more than two converters connected through an HVDC network, called a multi-terminal HVDC system [4], allows connecting multiple generators and AC grids. Due to these characteristics, HVDC technology can be used as a solution to recent problems of power grids, such as, network congestions, wind farms connection, multi-terminal operation and asynchronous connection [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19].In their early ages CSC HVDC systems were based on thyristor technology [20,21] but, due to the continuous improvement of high-voltage, high-power fully controlled semiconductor devices, two-level voltage source converters (VSC) topologies are now being used in HVDC systems [22,13]. These topologies allow operation at switching frequencies much higher than the line frequency.…”

Investigation on the electromagnetic transient characteristics of an AC-DC interconnected system under different faults

“…Two outputs including firing angle α rec and α inv for the rectifier and inverter side respectively [21]. Certain control parameters [22] are also shown in Fig. 5.…”

Parameters affecting the arcing time of HVDC circuit breakers using black box arc model

“…High voltage direct current (HVDC) circuit breakers (CBs) play a vital role in the growth of HVDC power systems, which can widely help in replacing fossil fuels with renewable energy sources [1][2][3][4][5][6][7][8]. The main usage of the HVDC system is to connect two AC networks with different frequencies and to transmit large amounts of power through long distances [9][10][11][12][13][14][15].…”