Content of collections

Optimization of the equipment structure of a photovoltaic solar power plant

Buratynskyi I.M., Nechaieva T.P., PhD (Engin.), Shulzhenko S.V., PhD (Engin.), Senior Research Scientist
Institute of General Energy of the National Academy of Sciences of Ukraine, 172 Antonovycha str., Kyiv, 03150, Ukraine
Language: Ukrainian
Source: The Problems of General Energy, 2020, 2(61):17-22
https://doi.org/10.15407/pge2020.02.017
Section: Mathematical modeling of energy facilities and systems
UDC: 621.311.25
Received: 05.05.2020
Published: 15.07.2020

Abstract:

The state of the modern structure of generating capacities in the energy system of Ukraine is described. The features of the work of renewable sources in the energy system of Ukraine are analyzed. The problematic issues that arise due to the specifics of the operation of solar photovoltaic power plants are considered. The character of the operation of solar power plants depends on weather conditions, which forms certain difficulties in balancing the power system. Dispatch restrictions and causes that determine the limitations imposed on the delivery of green electricity to the power system are considered. An analysis of the measures used to improve the conditions for the ntroduction of solar power plants in the world is carried out. The features of operation of a solar power plant at various ratios of the total photoelectric power of direct current and declared power of alternating current are considered.
The graphs of electricity production and the operating time characteristics of a photovoltaic solar power plant with different indicators of the overload coefficient are studied. The results obtained showed that the use of overload coefficient, in addition to increasing the volume of electricity production, has a number of other technical advantages. The growth of the operating time of a photovoltaic solar power plant, the increase in the period of delivering maximal power, and the decrease in the start-up time of a solar power plant improves the overall quality indicators of electric energy. The influence of technological losses and linear losses arising due to the degradation of photovoltaic modules throughout their entire life cycle is described.
The technique used for determining the weighted average cost of electricity production during the life cycle of a solar power plant allowed us to determine the optimal and most cost-effective structure of the equipment of a photovoltaic plant by technical and economic criteria. Our studies were carried out in terms of the ratio between the total photoelectric power of direct current and the power of joining of the alternating current. The results obtained showed the inflame of losses arising from the production of electricity and losses initiated from the degradation of photovoltaic modules on the cost of generating electricity during the life cycle. The technique used allowed us to take into account all technical and economic features of the operation of a photovoltaic solar power plant.

Keywords: energy system, renewable energy sources, solar photovoltaic plant, overload coefficient, weighted average cost of electricity production

References:

  1. Pro alternatyvni dzherela enerhii: Zakon Ukrainy vid 20.02.2003. URL: https://zakon. rada.gov.ua /laws/ show/555-15 (Last accessed: 13.03.2020) [in Ukrainian].
  2. Informatsiina dovidka pro osnovni pokaznyky rozvytku haluzei palyvno-enerhetychnoho kompleksu Ukrainy za hruden ta 2019 rik, 3 p. URL: http://mpe.kmu.gov.ua/minugol /control/uk/publish/article?art_id= 245436840 &cat_id=35081 (Last accessed: 04.04.2020) [in Ukrainian].
  3. Report on conformity assessment (adequacy) of generating capacities. Kyiv: NPC "Ukrenerho", 2019. URL: https://www.nerc.gov.ua/?news=10017 (Last accessed: 18.04.2020) [in Ukrainian].
  4. Shivashankar, S., Mekhilef Saad, Mokhlis Hazlie, & Karimi, M. (2015). Mitigating methodsofpower fluctuation ofphotovoltaic (PV) sources – A review. Elsevier, Vol. 59, P. 1170—1184. https://doi.org/10.1016/j.rser.2016.01.059
  5. Buratynskyi, I.M. (2019). Analisis of the use of electric energy storage systems in power systems with a large volume of renewable energy sources. The Problems of General Energy, 4(59), 63—70. [in Ukrainian] https://doi.org/10.15407/pge2019.04.063
  6. Roziasnennia shchodo obmezhennia heneratsii VES ta SES 7 sichnia 2020 roku. NPC "Ukrenerho" – 2018. URL: https://ua.energy/media/pres-tsentr/pres-relizy/roz-yasnennya-shhodo-obmezhennya-generatsiyi-ves-ta-ses-7-sichnya-2020-roku/ (Last accessed: 04.04.2020) [in Ukrainian].
  7. Rozvytok VDE: intehratsiia v enerhosystemu ta finansuvannia. NPC "Ukrenerho" – 2018. URL: http://saee.gov.ua/sites/default/files/01_Kovalchuk_28_11_2019.pdf (Last accessed: 04.04.2020) [in Ukrainian].
  8. Limited warranty certificate for risen energy crystalline pv modules. Risen Energy – 2018. https://www.risenenergy.com/uploadfile/201809/bfa4f1806b.pdf (Last accessed: 07.11.2019).
  9. Report IEA-PVPS T13-01:2014, Review of Failures of Photovoltaic Modules, EIA Photovoltaic power system programme PVPS. ISBN 978-3-906042-16-9. URL: https://iea-pvps.org/key-topics/review-of-failures-of-photovoltaic-modules-final/ (Last accessed: 25.04.2020).
  10. Capital Cost and Performance Characteristic Estimates for Utility Scale Electric Power Generating Technologies. U.S. Energy Information Administration. February 2020, EIA – 2020. Case 24. Solar photovoltaic, 150 MVac. P. 24-1―24-6.
  11. Shulzhenko, S.V. (2008). Estimation of cost indicators for the task of electrical power system development forecast under the market liberalization conditions. The Problems of General Energy, 2(18), 16—20 [in Ukrainian].
  12. Renewable Power Generation Costs in 2018. Сost metric methodology International Renewable Energy Agency. IRENA, 2019.
  13. Nechaieva, T.P. (2019). Assessment of the joint work of battery energy storage systems with power plants on renewable energy sources. The Problems of General Energy, 3(58, 11—16. [in Ukrainian] https://doi.org/10.15407/pge2019.03.011
  14. Prezentatsiia shchodo obhovorennia kliuchovykh polozhen novoi systemy pidtrymky vidnovliuvanoi enerhetyky. NKREKP. Pidtrymka vidnovliuvanoi enerhetyky. 21.08.2018, 5 p. [in Ukrainian].

Downloads:

Full text (PDF)