Reactive power control to enhance the VSC-HVDC system performance under faulty and normal conditions

Abstract

<p>This paper studied the reactive power control of the voltage source converters based high-voltage direct current system (VSC-HVDC). PI (proportional & integration) controller was used in this work to enhance the dynamic response of the system. Gravitational search algorithm (GSA) and sine cosine algorithm (SCA) are used to get optimal parameters of the PI controller. GSA algorithm is based on the gravity law for Newton while SCA depends on mathematical model based on cosine and sine functions. These algorithms have an efficient global Search capability. The VSC-HVDC is exposed to different disturbances for checking the controller robustness. First disturbance was applying three phase faults on the system. While the second one was applying a step change in AC voltage. Finally, Applying step change in regulators reference values. Simulation results proved the controller superiority also verified the enhancement of the system dynamic response.</p>

Model predictive control of high voltage direct current based on voltage source converter transmission system

“…Nowadays, power electronics are used to convert and control electrical energy. The growing consumption of electrical energy has prompted the development of new standards for evaluating energy quality and efficiency [2], [3]. Faced with the novelty of semiconductors, a whole new generation of control diagrams has been traced [4].…”

Chaotic theory incorporated with PSO algorithm for solving optimal reactive power dispatch problem of power system

“…So, several optimization techniques have been presented in order to avoid these disadvantages of the conventional optimization algorithms and these algorithms called computational optimization algorithms and the basic concept of these algorithms are beginning from an initial solution swarm like, genetic algorithm (GA) [11], gentoo penguin algorithm (GPA) [12], hybrid GA-IPM [13], meleagris gallopavo algorithm (MGA) [14], chaotic predator-prey brain storm optimization (CPB) algorithm [15], Gravitational search algorithm (GSA) and sine cosine algorithm (SCA) [16], enhanced fruit fly optimization algorithm (EFF) and status of material algorithm (SMA) [17] and polar wolf optimization (PWO) algorithm [18] and particle swarm optimization (PSO) [19], have been presented for the solution of RPD problem in the literature. From all these algorithms, PSO shown great reliability to overcome the drawbacks of the conventional algorithms and can easily be applied to multi problems, but it doesn't mean that PSO algorithm doesn't involve any disadvantages.…”

Adaptive hysteresis band current control of grid connected PV inverter

“…There was a technical improvements are there in HVDC and FCTS device to reduce the generation of harmonics [1]. The VSC based converter are used in medium and low level power transmission for high level power SCR based HVDC system is used [2][3][4][5]. HVDC DC light is made of fully controlled switch such as IGBT or MOSFET along with PWM technique.…”