Category: Modeling and Control of Sustainable Power Systems

Coordinated Generator Reactive Power Control

The recent grid codes of many countries, such as Denmark, Germany, Italy, Irel­and and the UK, require that WTs should provide reactive power control capabili­ties and that network operators may specify power factor or reactive power gener­ation requirement for grid-connected WTs [42]. In practice, a grid-connected WT needs to fulfill the specific requirement de­pending on […]

Selective Harmonic Elimination

To control the output voltage and reduce the undesired harmonics, different sinu­soidal pulse width modulation (SPWM) and space-vector PWM schemes are ex­plained in previous sections for multilevel inverters; however, PWM techniques are not able to eliminate lower order harmonics completely. The undesirable lower order harmonics of a square wave can be eliminated and the fundamental […]

GPU Kernel Implementation

As the parallelization of the vector-update operation is straightforward, this sec­tion focuses primarily on matrix-vector multiplication and the vector-vector dot product. GPU version matrix vector multiplication The GPU implementation of the matrix vector multiplication is based on [49], in which matrix vector multiplication Ax=b is partitioned into a series of independent operations Aix = bi […]

Multi-Period Optimal Power Flow

The optimization method aims to find the optimal locations and capacities of WTs so that the wind energy exploitation in the network is maximized. Such an objec­tive is subject to a number of technical constraints imposed by regulations includ­ing bus voltage limits, line/transformer thermal limits, and system short-circuit le­vels. By fulfilling these constraints, the network […]