This paper presents a new method for power systems performance optimization using Electromagnetic Transients Simulation. In this method, an emtp-type program (PSCAD/EMTDC) becomes the inner objective function calculation loop of a non-linear optimization program. The procedure is conducted in a Graphical Environment and with the use of specially designed blocks, allows for the selection of any ...

In this paper, the use of the supplementary controller of a unified power flow controller (UPFC) to damp low frequency oscillations in a weakly connected system is investigated. The potential of the UPFC supplementary controllers to enhance the dynamic stability is evaluated by measuring the electromechanical (EM) controllability through singular value decomposition (SVD) analysis. Individual d...

Power system stabilizers (PSS) are used to generate supplementary control signals for the excitation system in order to damp the low frequency power system oscillations. To overcome the drawbacks of conventional PSS (CPSS), numerous techniques have been proposed in the literature. Based on the analysis of existing techniques, this paper presents an indirect adaptive neural network based power s...

Diode-rectifier-based high voltage dc (DR-HVdc) systems can be a promising low-cost solution for exporting wind power from remote offshore farms to onshore systems. Industrializing the DR-HVdc requires technical maturation, achievable through in-depth studies and pilot experiments. Deployment of may entail fundamental change control philosophy in turbine (WT) converters grid-following grid-form...

The increasing presence of wind power in power systems will likely drive the integration of large wind farms with electrical networks that are series-compensated to sustain large power flows. This may potentially lead to subsynchronous resonance (SSR) issues. In this paper, a supplementary controller on the grid-side converter (GSC) control loop is designed to mitigate SSR for wind power system...

The DR-HVDC (Diode rectifier-based HVDC) transmission topology was recently proposed for integration on large offshore wind farms due to its low investment cost and high reliability. To further reduce the investment, a DC collection based series-connected diode rectifiers (DR) is proposed, where no platform needed. However, units of (SCU) show coupling issues, such as overvoltage, energy curtai...

A coordinated recovery strategy, based on MIESCR, is proposed for the converters Excessive dynamic reactive power demand and low speed of transmission in multi-infeed HVDC system this paper. Firstly, article deduces consistency two type definition uses respective advantages to improve physical meaning MIESCR; then it elaborates role MIESCR played MIDC voltage power-angle stability Third, pages ...