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Item Transient stability analysis of hvac-hvdc systems and power quality improvement of hvdc systems by designing optimized ac filters(UMT.Lahore, 2021) RANA SHAHEER MEHMOODThe lack of electrical power is the genuine issue that is being faced nowadays especially in Pakistan. Alternating current (AC) is being used at the load ends but for transmitting the electrical power for long distances, high voltage alternating current (HVAC) systems have some limitations as it is very difficult to control the power flow. High voltage direct current (HVDC) systems, provides technical and economic benefits for the long-distance power transmission as compared to (HVAC) systems. One of the main objectives of this research is to implement comparative analysis of HVAC and HVDC systems in order to increase the amount of power flow and in improving the power quality and stability of a high-voltage long-distance transmission line. Operations including load flow analysis, contingency analysis, short circuit analysis, steady state and transient state stability analysis are executed for a long-distance large-capacity power transmission system for both the systems. Second objective of this research is to improve the total harmonic distortion (THD) of HVDC systems by improving the AC filter design. Simulations are performed using the software, power system simulation for engineers (PSS/E) and power system computer aided design (PSCAD).Item Hybrid solar based charging station design for electric vehicles(UMT.Lahore, 2021) Muhammad Waqas NaeemThis proposal suggests a unique architecture for plug-in-hybrid electric vehicles (PHEVs) DC charging station at the megawatt level by the use of an Adaptive Neuro-Fuzzy Inference System (ANFIS) controlled converter powered from photovoltaic (PV) units also, to save grid power during day light. Proposed topology is a combination of grid power and PV unit’s so that renewable energy sources can be utilized and to minimize the load on grid and system can fulfill demand during absence of grid also. PV unit’s power will be given maximum priority when available. To get maximum power from PV, an algorithm of Maximum Power Point Tracking (MPPT) will be used. An AC-DC converter will convert this combined power according to the vehicle demand. For convertor section, Vienna converter may be proposed. The suggested bipolar dc arrangement of Vienna converter decreases the stepdown effort for the AC-DC fast chargers. Furthermore, this research work will offer a balancing architecture which allows managing any deviation on the dc loads by adjusting center-point voltages. By traditionally describing the unbalance operation boundaries, the suggested scheme of control will be able to furnish complementary balancing potentials with use of an additional leg serving as a bidirectional DC-DC stage, handling the minimal load condition and also permitting the modulator to supervise the control on the dc voltages under the influence of different load conditions. The proposed Adaptive Neuro-Fuzzy Inference solution will authorize fast charging for plug-in-hybrid electric vehicles merged with central grid tied converter. So, in this proposal the simulation results carried out in Matlab will be furnished to authenticate the proposed charging station architecture.Item Generation expansion planning for ntdc based on lesco electricity demand forecast(UMT.Lahore, 2021) Saba NaeemThe aim of this thesis is to formulate thermal generation expansion planning so that an objective function is optimized, and various constraints are met to determine the availability, type and capacity of different generation facilities to satisfy the expected demand. Generation expansion planning for NTDC based on LESCO electricity demand forecast is done by the addition of thermal power plants in the system using WASP (Wien Automatic System Planning Package) software, which is a well-known tool used extensively worldwide in generation planning analysis, developed by IAEA (International Atomic Energy Agency). According to report of LESCO electricity demand forecast by NTDC, for year 2016-17 total energy sale, peak demand and energy purchased was 23965 GWh, 5821 MW and 27117 GWh respectively. Base data has been taken from years 2013 to 2017. In this research generation expansion planning is done for next 10 years from 2018 to 2027 to meet the forecasted demand of 7602 MW, having potential indications in terms of the expansion required, the size and type of units needed for the appropriate expansion with loss of load probability not more than 1% year to year, that will meet the anticipated load and energy demands.Item A novel algorithm for opaque-array concentrator photovoltaic (oa-cpv) to reduce mismatch losses(UMT.Lahore, 2021) Naveed Aftab KhanThe renewable energy sources are taking a great part along with the conventional sources for the production of increased power. Concentrated Photovoltaic (CPV) is showing great signs in terms of energy conversation to produce electricity. Because of highly concentrated non-uniform emissions, the opaque array photovoltaic concentrators experiences exceptional mismatch losses. Mismatch losses can also be minimize by, a proposed new hybrid strategy. The contrast of 4 traditional approaches with suggested algorithm’s output performance will be achieve through two-stage simulation procedure.