Reliability assessment of different HVDC technologies by means of Multi-State Matrix approach

Reliability Assessment of a Multi-State HVDC System by Combining Markov and Matrix-Based Methods

“…The availability analysis of different Multi-Terminal DC (MTDC) configurations is performed for different transferred power capacities. The data used as input for the availability estimations are reported in Table 1 and they are taken from the technical literature [31,34]. In particular, for the cable system failure rates and mean time to repairs (MTTRs), the Cigrè TB [35] is considered whereas, for the other components of the system, the input data are based on the paper [31].…”

“…It is possible to note that a more detailed characterization of the cable systems performed by means of the Markov chains significantly affects the availability estimation of the overall HVDC multi-terminal interconnection. For each case study, the availability analysis is carried out by exploiting the MSR method for different fault conditions [31,34], which determines different power transmission capacities (capacity states) which are summarized in Table 4.…”

“…A reliability computation method that fits well with HVDC multi-terminal connections is the multi-state matrix approach (MSR) [31][32][33][34] which, starting from the availabilities of the HVDC system components, allows correlating the reliability of the system with the transmitted power capacity.…”

“…The authors applied the MSR technique to compare the reliabilities of different HVDC multi-terminal systems based on both HVDC-LCC and VSC-MMC technologies in the conference paper [34]. Since the MSR approach foresees the component availabilities of the whole HVDC system as input data, the present paper is an extended and enriched version of [34], where different techniques are adopted to estimate the availability of the cable systems.…”