J I Serrano Renedo

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Multi-terminal High Voltage Direct Current (HVDC) using Voltage Source Converters (VSC-HVDC) is a promising technology which provides flexible control of active and reactive power and facilitates remote renewable energy integration, above all using long cables. This paper analyses an active power control strategy for multi-terminal VSC-HVDC systems tailored(More)
The presence of radioactive materials in scrap metal has been detected relatively often in recent years. As a result of an accidental melting of a 137Cs source in a Spanish steel mill (Acerinox) in 1998, the national authorities, the involved private companies, and the main trade unions drafted a protocol for prevention of and responding to such events(More)
This paper proposes a new control strategy for the reactive-power injections of voltage-source converters (VSCs) in high-voltage direct-current multi-terminal systems to improve power system transient stability. A reactive-power supplementary signal is provided for each converter. Its value is proportional to the frequency deviation of its corresponding AC(More)
Anaerobic conversion of dairy manure into biogas is an attractive way of managing this waste. It is well known that the hydrolysis of large molecules into small, directly biodegradable ones is the rate limiting step of the overall anaerobic process. The present work studies the development of the hydrolytic and acidogenic stages of dairy manure with(More)
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