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The increasing penetration of distributed generation (DG), especially RES, brings new challenges for network operators to ensure energy balancing and quality of power supply. The uncontrolled electricity generation in a distribution network may have a negative impact on power system operation. The operation of DG, particularly RES, should be optimized to ensure technical standards of energy delivery...
In a power electronic system with several multi-functional Power Electronics Building Blocks (PEBB) converters, one big challenge is the control coordination of the power electronic devices to ensure stability and power quality as well as feeding the loads and manage energy storage. In this context, we aim at finding an optimal coordination method in the form of task sharing among the PEBB converters...
Presence of the distributed generation (DG) in electric systems can represent a significant impact on the operational characteristics of distribution networks. The optimal placement and sizing of generation units on the distribution network has been continuously studied in order to achieve different aims. In this paper our aim would be optimal distributed generation allocation for voltage profile...
There are many consumers and equipments in distributed generation (DG) systems and distributed networks which have rapid changes in the reactive power consumption. These changes can result in large variations in the load-side voltage that may affect the operation of other power consumers which are fed from Point of Common Coupling (PCC). In this paper a current control strategy for inverters, based...
Micro-grids offer a new challenging domain for power electronics, since they include a variety of power sources and electronic power processors (EPP) interacting each other. In micro-grids, energy efficiency requires smart control of power flow, and power quality calls for voltage support by reactive power regulation, suppression of voltage distortion at load terminals and limitation of current harmonics...
The paper deals with the reactive power control in a MV distribution system in presence of Dispersed Generation (DG). The control variables are the reactive powers of DG units and capacitors, and the tap position of the on-load tap changer of the HV/MV transformer. Single-objective and multi-objective optimization problems are formulated and solved in order to achieve the optimal control, even containing...
Distributed generation (DG) is a hot spot nowadays, at the same time the harmonic pollution can't be ignored when DG is connected with the power grid through power converters. First discuss several harmonic suppression methods have been adopted in practice, such as increasing the number of converter pulse, using pulse width modulation (PWM) converter, passive power filter (PPF), active power filter...
Genetic algorithm (GA) is an important method of multi-objective optimization. The method is introduced that using GA optimizes PPF parameters in this thesis. Distributed generation (DG) is a hot spot nowadays, but the harmonic pollution isn't ignored when DG is connected with the power grid through power converters. First discuss several harmonic suppression methods have been adopted in practice,...
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