Phd Thesis On Power Quality

Phd Thesis On Power Quality-75
It ultimately leads to better design of mitigation devices like Dynamic Voltage Restorer (DVR), Distribution Static Synchronous Compensator (DSTATCOM) and Unified Power Quality Conditioner (UPQC) to alleviate various power quality related problems.

It ultimately leads to better design of mitigation devices like Dynamic Voltage Restorer (DVR), Distribution Static Synchronous Compensator (DSTATCOM) and Unified Power Quality Conditioner (UPQC) to alleviate various power quality related problems.

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• A new set of planning level values for flicker severities at different voltage levels of a network is proposed.

For harmonics, a proposal is given to change the planning level values for 'triple n' harmonic voltages and new values are suggested for the MV and LV networks.

Further, the obtained results are compared with the values given in the available standards.

Lastly optimal PQ parameters at a poc are defined for flicker, harmonics and voltage dips.

For this reason, Custom Power Devices (CPDs) such as the Unified Power Quality Conditioner (UPQC) can be the most appropriate solution for enhancing the dynamic performance of the distribution network, where accurate prior knowledge may not be available. (2013) Power Quality Improvement of Distributed Generation Integrated Network with Unified Power Quality Conditioner.

Therefore, the main objective of the present research is to investigate the (i) placement (ii) integration (iii) capacity enhancement and (iv) real time control of the Unified Power Quality Conditioner (UPQC) to improve the power quality (PQ) of a distributed generation (DG) network connected to the grid or microgrid. A disturbance in supply voltage can cause significant financial losses for an industrial customer.Moreover, there are increasing number of disputes in different countries of the world among the network operators, the customers and the device manufacturers regarding their individual responsibility concerning 'Power Quality' (PQ) problems and solutions.The validity of the proposed method and achievement of the desired compensation are confirmed by the results of the simulation in Matlab/ Simulink.newline While compensating, the transient response of the DSTATCOM is very important for nonlinearly varying and unbalanced loads.Inadequate PQ can lead to various technical and financial inconveniences to the customers and the network operators.This research aims to find out a socio-economically optimum solution to PQ problems.A fast acting DC Link voltage controller based on the energy of a DC Link capacitor is proposed.The transient response of this controller is very faster than compared to that of the conventional DC Link voltage controller.In addition, the existing standards on PQ give very limited information about responsibility sharing among the involved parties.PQ disturbances can be originated in the network as well as at the customer's premises and can propagate to other parts of the network.

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