Simulation of the electrical-technical complex of the power transmission line of dc in the MATLAB program environment

One of the main directions of the development of electric power systems is the introduction of devices and technologies based on high-power semiconductor switches (HVDC (High Voltage Direct Current) technologies; one of the elements of this technology is direct current link on the basis of voltage source converter (VSC). VSC-HVDC are used for tasks such as connecting asynchronous power grids for various frequencies, transmission of electricity, improve local and systemic handling of electric power system, increasing the capacity of network elements that contains a “weak” connection. Due to the high degree of controllability of voltage source converters (VSCs), it is mainly addressed in the recent literature on HVDC operation. However, the implementation and operation of VSC-HVDC determines the need for a wide range of analysis and research that can only be done with the help of mathematical modeling. therefore, the purpose of the work is: to analyze the behavior of the HVDC transmission system based on VSC using various control modes by modeling in the MATLAB software environment.