Renewable electricity sources in electrical networks as an element of energy efficient power supply

Authors

  • P. Lezhniuk Vinnitsa National Technical University
  • S. Kravchuk KNESS ENERGY Vinnitsa
  • I. Kotilko Vinnitsa National Technical University

Keywords:

diagnosis, technical state, power transformer, frequency-amplitude characteristics, deviation, FRA, windings, magnetic circuit, planning the day of diagnosis, forecasting

Abstract

It is shown that the unstable nature of the operation of renewable energy sources affects the modes of operation of the electricity grids. The instability of generation of photovoltaic and wind power plants (FES, WPP) is offset by the power supplied to the distribution grids (REM) from the grid. Because of this, the conditions of the balancing of the SEM mode also affect the EES modes. In today's conditions, the balance is solely placed on a centralized electricity supply system. However, there is a gradual change in the mechanisms of functioning of the Ukrainian energy market, which encourage RES to work according to a set schedule, in particular the introduction of penalties for failure to comply with the stated daily generation schedule. To ensure the balance reliability of the SEM, the power reserve of the grid is determined or the capacity of the energy storage is determined. Further development of renewable energy sources is impossible without the use of balancing tools and the assessment of their impact on the reliability of the electricity grids to which RES is connected.

A change in SAIDI for recent years, when RES is being actively deployed, is given in urban and rural electricity networks. RES do not always lead to increased reliability of electricity supply and improved quality of electricity. It is established that with the development of RES it is necessary to improve the technical condition of the electrical networks.

Structural diagram of an automated control system for electricity sources with local SACs for controlling power flows in electric networks is developed with RES to reduce electricity losses.

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Published

2020-02-14

How to Cite

Lezhniuk, P., Kravchuk, S., & Kotilko, I. (2020). Renewable electricity sources in electrical networks as an element of energy efficient power supply. Lighting Engineering & Power Engineering, 3(56), 99–106. Retrieved from https://lepe.kname.edu.ua/index.php/lepe/article/view/424

Issue

Vol. 3 No. 56 (2019): Lighting engineering and power engineering

Section

Articles

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