Browsing by Author "Wadi, M."

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Calculation Of Optimal Value Of Spinning Reserve Requirement For Unit Commitment İn Power Systems By Considering Lost Parameters;
(Gazi Universitesi Muhendislik-Mimarlik, 2019) Tür, M.R.; Ay, S.; Shobole, A.; Wadi, M.
Spinning Reserve is one of the most important sources used by system operators in response to unforeseen events such as generation discontinuities and sudden load changes. It is possible to maintain the power system against production interruptions caused by unforeseen circumstances, which can be caused by keeping the amount of reserves to be used high, in case of this process the possibility of applying the load shed decreases, but in this case reserve supply results in a very high cost. If the amount of reserves is kept low in order to reduce the cost, there will be an energy that can not be provided in the case of possible interruptions and failures, and the consumers may be left without electricity. There is a need for an economical review of these two situations in a balanced way. In this study, the requirements of the Spinning Reserve needed in the power system are determined by taking into consideration socio-economic parameters such as the amount of expected energy not supplied and value of lost load. These parameters, which are added to the cost function, are calculated for the first time in our national power system by a new method. Macroeconomic analysis has been supported for this value. Thus, considering the calculated socioeconomic parameters, a program based on benefit/cost is used to calculate the economic cost value of the reserve for the power system model. © 2019 Gazi Universitesi Muhendislik-Mimarlik. All rights reserved.
Determining the Most Appropriate Spinning Reserve Depending on Demand
(Institute of Electrical and Electronics Engineers Inc., 2016) Tür, M.R.; Erduman, A.; Shobole, A.; Wadi, M.
In the deregulated power industry, effective procurement of the Ancillary Services (AS) is essential in order to both reliable supply to customer and power system security. AS are used in order to operate the system reliably within enterprise safety along with the criteria regarding supply quality and operating conditions. Demand decrease set Spinning Reserve (SR) for power systems and capital cost investments and for all plants. Influential control of SR supply important cost decrease for large power systems. This study propose that set a reserve with the governor action and load shedding function depending on demand. This make possible the reliability of individual units and the uncertainty of the load forecast to the considered for short-term scheduling. While it is easy to implement decisive criterion, this situation does not conform to the structure prediction problems. Thus, the technique have been proposed for determining SR capacity depending on demand. © 2016 IEEE.
Feasibility Study of Wind Energy Potential in Turkey: Case Study of Catalca District in Istanbul
(Institute of Electrical and Electronics Engineers Inc., 2019) Wadi, M.; Kekezoglu, B.; Baysal, M.; Tur, M.R.; Shobole, A.
This paper presents a technical evaluation of the wind potential for the present and the future integration challenges into the Turkey power network. The first part evaluates the feasibility of sites, installments, operation and maintenance. The second part investigates the wind energy integration in the Turkey power network. To determine the potential availability of wind energy in Turkey, feasibility evaluation based on the hourly measured wind speed data for the three years 2008-2010 at 30 m height in Çatalca district is done. These data were obtained from the national meteorology station in Istanbul - the Republic of Turkey are analyzed in order to evaluate the feasibility of wind power potential and to assure supreme assortment of wind turbines installing for the area of interest. Furthermore, the data are extrapolated and analyzed at 60 m and 80 m regarding the variability of the roughness factor. Weibull bi-parameter probability function is used to approximate monthly and annual wind potential and power density based on three calculation methods, namely, the approximated, the graphical and the energy pattern factor methods. The annual mean wind power densities were to be 400.31, 540.08 and 611.02 W/m2 for 30, 60, and 80 m heights respectively. Simulation results prove that the analyzed area is an appropriate place for constructing large-scale wind farms. Key words: wind energy, wind speed, wind turbines, feasibility study. © 2019 IEEE.
Impact of Demand Side Management on Spinning Reserve Requirements Designation
(International Journal of Renewable Energy Research, 2017) Tür, M.R.; Ay, S.; Erduman, A.; Shobole, A.; Wadi, M.
The most important responsibility of power system operators is to ensure the reliability of the system. Protecting the load-generator balance is an important part of reliability. There are some uncertainties in the power systems in this regard. In Turkey, the fact that renewable (both solar and wind) penetration, changing peak loads and production results can change unexpectedly must be taken into consideration. The country has more difficulty in operating the energy system, so there is a greater need for system reserves to be created. The demand side needs to be well examined to ensure that the amount of reserves to be kept is at optimum cost. The socioeconomic parameters affecting this cost are added to the account and the minimum cost is created. For this reason, this study shows that the support reserves must maintain the required amount, depending on the demand side conditions.
Reliability Evaluation in Smart Grids Via Modified Monte Carlo Simulation Method
(Institute of Electrical and Electronics Engineers Inc., 2018) Wadi, M.; Baysal, M.; Shobole, A.; Tur, M.R.
Operation of closed-ring power distribution systems has various advantages over both meshed-operated and radially-operated systems. Closed-ring system unlike to radial system, the voltage drop is less, achieves high reliability of power on demand since the power is supplied from both ends, and reduces the voltage fluctuation in high loaded areas by using a tie power line. However, the reliability assessment of closed-ring power grids is not a trivial task. Monte Carlo Simulation (MCS) is one of the most famous methods to assess the availability of any power system. However, the most proposed methods are able to evaluate the reliability of radial and open-ring grids. This paper developed the best known MCS method to assess the reliability of closed-ring grids by integrating the total loss of continuity (TLOC) definition into the MCS. The developed method is called modified Monte Carlo Simulation (MMCS) method. The MMCS is tested by using Roy Billinton Test System (RBTS) buses 2 and 4. The obtained results confirm the correctness of the proposed method. Therefore, MMCS method is appropriate to assess the reliability of both simple and complicated closed-ring systems. © 2018 IEEE.