Abstract
The purpose of this paper is to highlight that, in order to assess the availability of different HVDC cable transmission systems, a more detailed characterization of the cable management significantly affects the availability estimation since the cable represents one of the most critical elements of such systems. The analyzed case study consists of a multi-terminal direct current system based on both line commutated converter and voltage source converter technologies in different configurations, whose availability is computed for different transmitted power capacities. For these analyses, the matrix-based reliability estimation method is exploited together with the Monte Carlo approach and the Markov state space one. This paper shows how reliability analysis requires a deep knowledge of the real installation conditions. The impact of these conditions on the reliability evaluation and the involved benefits are also presented.
Highlights
High Voltage Direct Current (HVDC) systems represent a key technology for strengthening the electrical network, as it is confirmed by several contributions in scientific literature
It is worth noting that the fewer power cables required for the DC transmission lines compared with the AC ones and the negligible electromagnetic field emission make the HVDC systems fully compatible with the installation in railway/highway infrastructures [6]
Effective reliability and availability assessment tools [19,20,21,22,23,24,25,26,27,28,29,30] are of paramount importance in order to safely manage a whole HVDC-Voltage Source Converters (VSC) link and to minimize the system outage risk
Summary
High Voltage Direct Current (HVDC) systems represent a key technology for strengthening the electrical network, as it is confirmed by several contributions in scientific literature. They are able to connect grids that operate at different frequencies and allow installing very long interties by involving fewer power losses than HVAC systems. A significant penetration of HVDC links in the worldwide networks implies that the current scenario of electrical power systems is becoming more and more complex due to the number of components that need to work together, and their availability and reliability requirements are becoming very stringent. Effective reliability and availability assessment tools [19,20,21,22,23,24,25,26,27,28,29,30] are of paramount importance in order to safely manage a whole HVDC-VSC link and to minimize the system outage risk
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
