Power Quality Mitigation in Weak AC Grid with Low X/R Ratios using Distribution Static Compensator Controlled by LMF Algorithm

Abstract: The Council in the EU's institutional framework the Council, members, rules, etc the Presidency COREPER: Council-Commission relationship Council-Parliament relationship internal procedures the General Secretariat other intergovernmental mechanisms Maastricht.

Abstract: Wind power is still the most promising renewable energy in the year of 2013. The wind turbine system (WTS) started with a few tens of kilowatt power in the 1980s. Now, multimegawatt wind turbines are widely installed even up to 6-8 MW. There is a widespread use of wind turbines in the distribution networks and more and more wind power stations, acting as power plants, are connected directly to the transmission networks. As the grid penetration and power level of the wind turbines increase steadily, the wind power starts to have significant impacts to the power grid system. Therefore, more advanced generators, power electronic systems, and control solutions have to be introduced to improve the characteristics of the wind power plant and make it more suitable to be integrated into the power grid. Meanwhile, there are also some emerging technology challenges, which need to be further clarified and investigated. This paper gives an overview and discusses some development trends in the technologies used for wind power systems. First, the developments of technology and market are generally discussed. Next, several state-of-the-art wind turbine concepts, as well as the corresponding power electronic converters and control structures, are reviewed, respectively. Furthermore, grid requirements and the technology challenges for the future WTS are also addressed.

Abstract: Electrical Generation and Distribution Systems and Power Quality DisturbancesTerrorism and the Electric Power Delivery SystemPower Quality in Power Systems and Electrical MachinesAdvances in Electrical and Computer TechnologiesPower Quality Issues in Distributed GenerationPower QualityPower System HarmonicsUnderstanding Power Quality ProblemsPower Quality Problems and Its Mitigation TechniquesPower Quality Problems and Mitigation Methods: Case Study at DBBFSignal Processing of Power Quality DisturbancesElectric Power QualityMicrogrid Architectures, Control and Protection MethodsPower Quality IssuesComputing Algorithms with Applications in EngineeringICCCE 2020Renewable and Efficient Electric Power SystemsHandbook of Research on New Solutions and Technologies in Electrical Distribution NetworksGeomagnetic Disturbances Impacts on Power SystemsComputational Paradigm Techniques for Enhancing Electric Power QualityEmerging Trends in Electrical, Communications and Information TechnologiesPower Quality in Electrical SystemsElectric Power SystemsPower Quality in Modern Power SystemsPower System Protection in Smart Grid EnvironmentIntegration of Renewable Energy Sources with Smart Grid7th IEEE India International Conference on Power ElectronicsPower Electronics and Power QualityInstantaneous Power Theory and Applications to Power ConditioningElectrical Power Systems QualityHandbook on Battery Energy Storage SystemLoad Flow Optimization and Optimal Power FlowHandbook of Power QualityPower Quality in Power Systems and Electrical MachinesDistribution Reliability and Power QualityPower Quality Enhancement Using Custom Power DevicesPower System Harmonics Analysis, Effects and Mitigation Solutions for Power Quality ImprovementPower QualityBow Ties in Process Safety and Environmental ManagementPower System Control Under Cascading Failures

Abstract: Renewable energy becomes a key contributor to our modern society, but their integration to power grid poses significant technical challenges. Power quality is an important aspect of renewable energy integration. The major power quality concerns are: 1) Voltage and frequency fluctuations, which are caused by non-controllable variability of renewable energy resources. Their intermittent nature due to ever-changing weather conditions leads to voltage and frequency fluctuations at the interconnected power grid. 2) Harmonics, which are introduced by power electronic devices utilized in renewable energy generation. When penetration level of renewable energy is high, the influence of harmonics could be significant. In this paper, an extensive literature review is conducted on emerging power quality challenges due to renewable energy integration. The paper consists of two sections: 1) Power quality problem definition. Wind turbines and solar photovoltaic (PV) systems and their power quality issues are summarized. 2) Existing approaches to improve power quality. Various methods are reviewed. The future research directions for emerging power quality challenges for renewable energy integration are recommended in the paper.

Abstract: This paper proposes the use of a least mean fourth (LMF)-based algorithm for single-stage three-phase grid-integrated solar photovoltaic (SPV) system. It consists of an SPV array, voltage source converter (VSC), three-phase grid, and linear/nonlinear loads. This system has an SPV array coupled with a VSC to provide three-phase active power and also acts as a static compensator for the reactive power compensation. It also conforms to an IEEE-519 standard on harmonics by improving the quality of power in the three-phase distribution network. Therefore, this system serves to provide harmonics alleviation, load balancing, power factor correction and regulating the terminal voltage at the point of common coupling. In order to increase the efficiency and maximum power to be extracted from the SPV array at varying environmental conditions, a single-stage system is used along with perturb and observe method of maximum power point tracking (MPPT) integrated with the LMF-based control technique. The proposed system is modeled and simulated using MATLAB/Simulink with available simpower system toolbox and the behaviour of the system under different loads and environmental conditions are verified experimentally on a developed system in the laboratory.