Advanced Control of AC / DC Power Networks: System of by Abdelkrim Benchaib

By Abdelkrim Benchaib

The energy engineering area is dealing with large demanding situations, with an expanding curiosity in intermittent renewable energies that are enforcing significant technical obstacles. working ever toward their limits, the industry-standard AC energy grids are topic to instabilities.

This ebook offers an perception into DC grid structures, delivering attention-grabbing matters to good managed strength grids, not like present AC structures which supply the easiest and so much monetary connection procedure for brief distances.

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Extra info for Advanced Control of AC / DC Power Networks: System of Systems Approach Based on Spatio-temporal Scales

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It discharges when the power demand of the converter AC side is increased. In this case, the DC voltages drop as the converter requests more active power. Contrarily, when additional power is injected into the DC grid, the capacitors are charged and the DC voltages increase. In steady state, the active power distribution is balanced. The DC voltage control is definitely one of the main tasks of the VSC in an HVDC transmission system. The DC voltage is required to be well controlled within rigid limits under all conditions in order to guarantee the power balance between all MTDC network transmission terminals.

The main results of this chapter have been shown in [CAR 12, GHO 12] and [BEN 14] and references therein. 1. Time scale control structure for multi-terminal DC grids This chapter is organized as follows. 2, voltage source converter – high voltage direct current (VSC-HVDC) control principles will be given. 3. 4, DC grid steady state modeling is shown. 6. 7. 8. From this point, some research directions will be discussed. 9 will discuss the dynamic control of MTDC grid. 10 will concern the “plug-and-play” properties of networked system and more specifically MTDC grid.

22], but this scenario is not considered in this work since no further Modeling Control of VSCs 13 models of the AC grid have been so far included; thus, the evolution of the grid voltage (Vsd) in response to the control q-axis current is unknown. 3. 1. Master/slave DC voltage control When the M/S DC voltage control strategy is implemented, one converter of the VSC MTDC system controls the DC voltage. 7. The design parameters of the controller are found through a linearization of the power equation [TEO 11].

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