2020

Permanent URI for this collection

https://escholar.umt.edu.pk/handle/123456789/16842

Browse

Browsing 2020 by Author "Abid Ali Dogar"

Now showing 1 - 1 of 1
  • Thumbnail Image
    Item
    Power quality comparison between conventional power distribution and modern smart distributed generation
    (UMT.Lahore, 2020) Abid Ali Dogar
    Domestic and industrial users for the sake of green, reliable, secure, sustainable and self-sufficiency are observing a rapidly increasing trend towards the use of renewable energy sources (RES) based systems for electric power generation(EPG). These scenar- ios have been regularized within the national and international electric power market with the concept of the introduction of a modern smart electric power generation sys- tem named distributed generation (DG). Now-a-days, DG’s play a vital role in energy sector not only in terms of providing power as a backup but also helpful in the reduction of CO2 level globally, decreasing dependency upon the conventional source of power generation (i.e burning fossil fuel, natural gas) and reducing the generation cost. So, along with these benefits, govern- ment incentive has further boosted the trend of using RES as a generating source in the modern smart power sector. However, unplanned and arbitrary placement of these static renewable generating sources (SRGS) into the conventional power distribution system will create several critical impacts on the system in terms of power quality (PQ) and system stability (SS). In this context, the author has been conducted a comprehensive research to eval- uate and analyze these dynamic PQ impacts in both Scenarios (with and without the integration of these RES i.e photovoltaic (PV) and wind energy (WE) into the power distribution system (PDS)) in order to find out the most appropriate, effective and ef- ficient controlling mechanism for the resolution of these integration problems. PQ has been analyzed in both scenarios by performing one of the widely used iterative meth- ods of solving non-linear equations called Newton Raphson (N-R) Method [1][2] due to their robustness nature and fast convergence. a) Load flow study (LFS) or Load flow analysis (LFA) is being performed using N-R method[1], to analyze the operational be-havior of the system during the steady-state conditions. b) Transient stability analysis (TSA) is being performed using a stochastic based adaptive (N-R) method, to see the impacts of the transient in power system in terms of voltage profile (VP) and system stability. c) Harmonic analysis (HA) is being performed to visualize the influence of high RES concentration into the power system at distribution level by adopting the point of common coupling (PCC) or common node method (CNM) in terms of voltage and current profile. In the end, the critical analysis was performed based on the results extracted from both Scenarios (with and without the integration of RES). Comparing the results and visualize them together to see the impacts on PQ(both positive and negative) in different operating conditions i.e (steady-state and transient state condition and percentage of harmonics by following IEEE 519-1992 and IEEE 519-2014), which revealed that the unplanned and arbitrary integration of these RES in power system (PS) at distribution level make the system more complex and unreliable in operation.