Mitigation of Power Quality Disturbances

K. , Chandrasekaran and P. A. , Vengkatachalam and Karsiti, Mohd Noh and K. S. , Rama Rao (2009) Mitigation of Power Quality Disturbances. [Citation Index Journal]

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Power Quality is a major concern of our modern industries and other consumers. Poor quality of supply will affect the performance of customer equipment such as computers, microprocessors adjustable speed drives, power electronic devices, life saving equipment in hospitals, etc. and result in heavy financial losses to customers due to loss of production or breakdown in industries or loss of life in a hospital. The two major power quality disturbances are voltage sag and harmonic distortion. In the event of voltage sag, due to insufficient energy, equipments may malfunction or trip. Harmonics introduced by nonlinear loads can pollute the input supply to the sensitive equipments and cause the connected equipments to malfunction. In this work, a Power Quality Provider (QPP) is proposed and modeled by simulation.. The QPP has a novel feature of performing dual functions of mitigation of sag and suppression of harmonics quickly, dynamically and simultaneously using a simple unique and novel control scheme. The QPP will be connected close the sensitive loads which are to be protected in the distribution network. For a case study the hospital distribution network which supplies many life saving equipments such as MRI, CTSCAN, computerized surgery equipment, etc. at Ipoh, Malaysia was chosen to conduct experiments. Experimental results prove the credibility of QPP in mitigating power quality disturbances effectively, such that the voltage at the sensitive loads are at the rated value and sinusoidal. The design, modeling and simulation are done using PSS/ADEPT and PSCAD software.

Item Type:Citation Index Journal
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments / MOR / COE:Departments > Electrical & Electronic Engineering
ID Code:6508
Deposited By: Assoc Prof Dr K. S. Rama Rao
Deposited On:05 Oct 2011 00:24
Last Modified:19 Jan 2017 08:25

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