Ensuring power balance in a hybrid power system with a standby generator

Authors

DOI:

https://doi.org/10.15587/1729-4061.2021.245557

Keywords:

local power system, renewable energy sources, diesel generator, power balance

Abstract

The combination of several non-guaranteed random energy sources (RES), conventional sources, and nonconstant consumer loads in a local system leads to stochastic power imbalances. This study objective consists in determining the possibilities of ensuring the power balance in a hybrid power generation system with a standby generator and a search for the methods of calculating the optimal parameters to achieve energy balance. This objective is achieved by simulating the processes inherent in wind and solar power engineering and the regimes of energy consumption through a combination of random functions with a standard probability distribution. Aggregated data on weather factors for several years in a region with a high renewable energy potential which can be used to describe the behavior of wind and solar energy over time were used as experimental data. The use of multiple simulations of random processes with calculated parameters has made it possible to draw conclusions about the presence of certain ratios of power and the generator control modes. These ratios can determine minimum energy and consumption losses, reduce the likelihood of energy imbalance, more efficiently use the reserved power. Specific features of the stochastic nature of RES related to the presence of trends and random fluctuations at short hourly intervals were additionally taken into account. Possibilities of varying the conditions of and switching on and off of the standby generator were provided. The existence of some ranges was established for the installed power of the generator outside which its use becomes inefficient. The proposed approach makes it possible to find the probability of various system states, assess the reliability of energy supply, and minimize unproductive losses.

Author Biographies

Mykola Kuznietsov, Institute of Renewable Energy of the National Academy of Sciences of Ukraine

Doctor of Technical Sciences, Senior Researcher

Department of Integrated Energy Systems

Olga Lysenko, Dmytro Motornyi Tavria State Agrotechnological University

Doctor of Technical Sciences, Professor

Department of Power Engineering and Automation

Andrii Chebanov, Dmytro Motornyi Tavria State Agrotechnological University

PhD, Associate Professor

Department of Power Engineering and Automation

Dmytro Zhuravel, Dmytro Motornyi Tavria State Agrotechnological University

Doctor of Technical Sciences, Professor

Department of Technical Service in Agriculture

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Published

2021-12-24

How to Cite

Kuznietsov, M., Lysenko, O., Chebanov, A., & Zhuravel, D. (2021). Ensuring power balance in a hybrid power system with a standby generator . Eastern-European Journal of Enterprise Technologies, 6(8 (114), 6–15. https://doi.org/10.15587/1729-4061.2021.245557

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Section

Energy-saving technologies and equipment