An improved mathematical model for the calculation of maximum permissible DG integration capacity
Citation
Doğanşahin, K , Kekezoğlu, B , Yumurtacı, R . (2020). Maksimum bağlanabilirlik kapasitesi hesabına yönelik geliştirilen yeni bir matematiksel model. Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi , 35 (1) , 275-286 . DOI: 10.17341/gazimmfd.463225Abstract
Purpose: Distributed generation is the power generation which is realized by being integrated into powersystems from the consumption side. DG promises high potential in terms of reducing environmental andeconomic concerns by increasing power systems efficiency and enabling renewable energy sources to be usedin power generation. On the other hand, DG is contrary to the centralized generation infrastructure of theconventional power systems, and excessive DG penetration in the systems may cause serious problems.Therefore, planning is an essential issue in DG integrations. Theory and Methods:Distributed generation increases voltage around the point they are integrated into the system Voltage variationsare limited within certain values to protect power systems components and the consumers connected to thesystem from damage caused by these voltage increases. The voltages above those limits referred asovervoltage. In order to determine the maximum DG integration capacity from a point into a system withoutcausing overvoltage risks, an analytical approach has been adopted within the consideration of voltageconstraints. Consequently, a mathematical model, which is defined over the characteristic values of theintegration point and the generator, is proposed. Although there are similar mathematical models in theliterature, the contribution of the study is the proposition of a new mathematical model that can fully evaluatethe problem without accepting various assumptions, unlike other mathematical modelsResults: The maximum permissible DG integration capacity calculation is performed on a 34-Bus test system. The results obtained from the proposed mathematical model are compared with those obtained with othermathematical models. The proposed mathematical model has always been able to give the highest and themost consistent results than other mathematical models. Conclusion: Accurate calculation of maximum permissible integration capacity increase the consistency of DG planning studies. With the proposed mathematical model, the most accurate results can be obtained regardless of the integration point and the conditions of the integration