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Report RSE 16001479

Nuovi sviluppi modellistici in corrente alternata a supporto dello sviluppo delle reti di trasmissione



Request Document (4.11 MB, .pdf)

R. Calisti (RSE SpA), F. Careri (RSE SpA), M. Cazzol (RSE SpA), G. Ceresa (RSE SpA), A. L´Abbate (RSE SpA), V. Viscardi (RSE SpA)

RETE-TRA 2015 - Evolution and development of the power transmission network


In the analyses supporting the optimal development of the transmission network in mature power systems (such as the Italian one), particular attention should be addressed to modeling feature, since the robustness of methodologies and results are strongly related to the level of accuracy in representing the system components: in this context, the availability of proper simulation tools allows to better catch reliability and security dimension of transmission network development. Moreover, these tools should be able to proper represent new transmission technologies that are more and more adopted.

In this context, RSE has started the development of the tool ACRE+: its main goal is to perform coupled active/reactive OPF calculations on a composite generation and transmission system on a variable time horizon (from one hour to one year): simulating the optimal operation of the modeled system allows to determine the dispatching of active and reactive power for generating units, the related transits of active and reactive power and current through all network elements.

RSE has already been developed a GAMS prototype for ACRE +: it is currently able to study AC/DC mixed meshed networks with HVDC (High Voltage Direct Current) systems, both type LCC (Line Commutated Converter) and VSC (Voltage Source Converter). Moreover, a proper model for the UPFC (Unified Power Flow Controller) FACTS (Flexible AC Transmission Systems) device has been included, too.

The testing activities carried out on the ACRE+ have shown the goodness of the adopted implementation choices as well as the robustness of the algorithm proposed in the resolution of sufficiently complex electrical systems. These analyses, in addition to confirming the implementation congruity, have allowed to obtain useful insights for the next developments that will be completed in the next years.

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