Multi-Objective Analysis of a CHP Plant Integrated Microgrid in Pakistan

Waqar, Asad; Tanveer, Muhammad Shahbaz; Ahmad, Jehanzeb; Aamir, Muhammad; Yaqoob, Muneeb; Anwar, Fareeha

doi:10.3390/en10101625

Cited by 30 publications

(27 citation statements)

References 19 publications

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“…For the sake of illustration, the conductance g 0 for a given power P f = P f nom is highlighted in thick black line. The upper limit curve corresponds to the maximum allowed power P f max , computed through (2).…”

Section: Design Criterion For the First-order Input Filtermentioning

confidence: 99%

“…Microgrids can be succinctly understood as an interactive hybrid system that combines distributed generation modules, storage modules and loads. The number and nature of these modules, as well as the microgrid topologies, vary greatly [1][2][3]. Presently, the modules interconnection is predominantly done using AC buses, but DC microgrids are expected to increase in the coming years [4].…”

Section: Introductionmentioning

confidence: 99%

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Stability Criteria for Input Filter Design in Converters with CPL: Applications in Sliding Mode Controlled Power Systems

2019

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Microgrids are versatile systems for integration of renewable energy sources and non-conventional storage devices. Sliding Mode techniques grant excellent features of robustness controlling power conditioning systems, making them highly suitable for microgrid applications. However, problems may arise when a converter is set to behave as a Constant Power Load (CPL). These issues manifest in the stability of internal dynamics (or Zero Dynamics), which is determined by the input filter of the power module. In this paper, a special Lyapunov analysis is conducted to address the nonlinear internal dynamics of SM controlled power modules with CPL. It takes advantage of a Liérnad-type description, establishing stability conditions and providing a secure operation region. These conditions are translated into conductance and invariant region diagrams, turning them into tools for the design of power module filters.

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Section: Design Criterion For the First-order Input Filtermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stability Criteria for Input Filter Design in Converters with CPL: Applications in Sliding Mode Controlled Power Systems

2019

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“…Simulation, optimization, and sensitivity analysis are the main three tasks performed in HOMER. It helps the modeler to compare various renewable energy systems over a wide range of applications considering the techno-economic features of system components [26,27,28].…”

Section: Homer Softwarementioning

confidence: 99%

Evaluating the Impacts of Ground and Atmospheric Conditions on the Efficiency of Solar Energy System and Its Economic Analysis

As¹,

Tajuddin²,

Padmanaban³

et al. 2018

Preprint

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The There are many factors influencing the performance of photovoltaic (PV) systems. Among these factors, temperature and solar radiation are two major parameters that have a large effect on the efficiency of PV systems. The cell temperature of PV panels is related to the ambient temperature while the solar radiation incident on the surface of the PV modules depends on the slope and azimuth of these modules. Furthermore, ground reflectance (albedo) affects the irradiance incident on the PV panel surface, which in turn affects the output of a PV system. Nevertheless, the effects of these factors on the economic performance of the solar PV systems are scarcely reported. This paper presents a complete design of a stand-alone PV/battery system to supply electric power for a mobile base station in Choman, Erbil, Iraq. The effects of different factors on the total electricity produced by PV arrays and its economic performance are simultaneously investigated. HOMER software has been used as a tool for the techno-economic and environmental analysis. As indicated from the simulation results, the PV array capacity and its economic performance are highly affected by the variation of the slope and azimuth. With a base case (albedo of 20% and average annual ambient temperature of 11°C), the best feasible system which is achieved by facing PV due to south with a tilt angle of 40° or 45°, is found to have net present cost (NPC) of 70595 $ and cost of energy (COE) of 0.54 $/kWh. Moreover, the results indicate that increasing the ground reflectance from 10% to 90% results in a 7.2% decrease in the PV array capacity and about 3% decrease in the NPC and COE. On the other hand, increasing the ambient temperature from 0°C to 40°C results in a 19.7% increase in the PV array capacity and an 8.2% increase in the NPC and COE. Furthermore, according to the ambient temperature of Choman, using PV modules with high sensitivity to temperature is found to be an attractive option. Provided simulation performance analysis proves that the studied parameters must be treated well to establish an enabling environment for solar energy development in Iraq.

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“…In another attempt Dinh et al [24], a modified bat algorithm is employed for economic dispatch of CHP units. Optimal operation of CHP units for real cases has been investigated in references Amber and Waqar et al [25,26]. Although the optimal generation of CHP-based systems have been investigated by researchers, the maintenance scheduling of generation units in a CHP-based system has not been investigated so far.…”

Section: Introductionmentioning

confidence: 99%

Generation Units Maintenance in Combined Heat and Power Integrated Systems Using the Mixed Integer Quadratic Programming Approach

et al. 2020

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Yearly generation maintenance scheduling (GMS) of generation units is important in each system such as combined heat and power (CHP)-based systems to decrease sudden failures and premature degradation of units. Imposing repair costs and reliability deterioration of system are the consequences of ignoring the GMS program. In this regard, this research accomplishes GMS inside CHP-based systems in order to determine the optimal intervals for predetermined maintenance required duration of CHPs and other units. In this paper, cost minimization is targeted, and violation of units’ technical constraints like feasible operation region of CHPs and power/heat demand balances are avoided by considering related constraints. Demand-response-based short-term generation scheduling is accomplished in this paper considering the maintenance intervals obtained in the long-term plan. Numerical simulation is performed and discussed in detail to evaluate the application of the suggested mixed-integer quadratic programming model that implemented in the General Algebraic Modeling System software package for optimization. Numerical simulation is performed to justify the model effectiveness. The results reveal that long-term maintenance scheduling considerably impacts short-term generation scheduling and total operation cost. Additionally, it is found that the demand response is effective from the cost perspective and changes the generation schedule.

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Multi-Objective Analysis of a CHP Plant Integrated Microgrid in Pakistan

Cited by 30 publications

References 19 publications

Stability Criteria for Input Filter Design in Converters with CPL: Applications in Sliding Mode Controlled Power Systems

Stability Criteria for Input Filter Design in Converters with CPL: Applications in Sliding Mode Controlled Power Systems

Evaluating the Impacts of Ground and Atmospheric Conditions on the Efficiency of Solar Energy System and Its Economic Analysis

Generation Units Maintenance in Combined Heat and Power Integrated Systems Using the Mixed Integer Quadratic Programming Approach

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