By Abdelkrim Benchaib
The strength engineering area is dealing with large demanding situations, with an expanding curiosity in intermittent renewable energies that are implementing significant technical barriers. working ever toward their limits, the industry-standard AC energy grids are topic to instabilities.
This ebook provides an perception into DC grid platforms, delivering attention-grabbing concerns to good managed energy grids, unlike present AC platforms which supply the easiest and such a lot fiscal connection approach for brief distances.
Read or Download Advanced Control of AC / DC Power Networks: System of Systems Approach Based on Spatio-temporal Scales PDF
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Extra resources for Advanced Control of AC / DC Power Networks: System of Systems Approach Based on Spatio-temporal Scales
Steady state voltage control systems – multi-terminal direct current (VSC-MTDC) model The steady state of a system refers to an equilibrium condition, where the effect of transients is no longer relevant. In power systems, any specific steady state operating point can be determined through an analytical technique called PF analysis (also known as load-flow), where the loads are modeled as bulk power delivery points and the voltages of the transmission network can be determined [KUN 94]. An analogous study for a VSC-MTDC system was conducted in [BEE 12].
9. 10. 4. 11. Inside the band of normal operation just one converter controls the Vdc voltage, while the control action of the others reminds inactive, and in failure condition all converters take their share to Time Scale Control Tools 29 compensate the disturbance via their k-value according to their capabilities and limitations. 11(a), the converter works as a slack bus in normal operation and assumes the responsibility to regulate the DC voltage of the MTDC network. In a disturbed operation, this converter turns to work under droop control following its characteristic.
Using these strategies, the coordination of the multiple HVDC systems with a minimum or without an explicit communication has to be accomplished. 2 shows a three-terminal HVDC system on which one of the following control strategies could be applied. 2. 1. Slack bus control (master/slave control) Within this strategy of control, all converters except one operate in a fixed power injection mode. The function of the remaining converter is to keep the voltage of the DC bus to its reference value. The converter controlling the DC voltage will act as a “battery” or “slack bus”, which means that, it will provide or absorb sufficient active power to achieve a power balance of the DC system [BAR 10].
Advanced Control of AC / DC Power Networks: System of Systems Approach Based on Spatio-temporal Scales by Abdelkrim Benchaib