Abstract
The current stage of world energy development is characterized by the creation of powerful, territorially unified energy systems under free market conditions as well as renewable energy integration. Such transactions challenge networks’ configurations and their operating modes. Electric power system (EPS) static stability could be considered one of the primary targets in this regard. The aim of this study was to evaluate the undergoing and expected modernization of the Latvian EPS in terms of static stability in a regional scale-based case study. In order to define static stability, a method based on a bus admittance matrix was proposed. A simplified Latvian EPS model was developed and assessed for the following three modes: past (2017), current (2020), and planned (2025), taking into account the Baltic States’ planned development scenarios including large wind farm integration. The evaluation of computation results provided an opportunity to visually inspect changes in the EPS’ sensitive elements such as lines and nodes. As a result, positive changes were observed (decrease of several weak points) for the planned mode (2025) as compared to the past mode (2017) under the considered modernization scenario. The detailed analysis and results are presented in the article.
Highlights
Electric power systems are complex objects of dispatching and management, requiring compliance with restrictions related to the reliability, safety, quality, and economy of their operating modes
This paper aimed to evaluate the Latvian power network in terms of static stability issues for three operation modes by considering their models as follows: past, current, and planned
Research of the Latvian power system was carried out based on three model schemes obtained for the past mode (2017) presented in Figure 6, the current mode (2020), and the planned mode (2025) including development scenarios (Figures 7 and 8) considering the share of the growth prospects of renewable power generating capacity and the disconnection of continental Europe from the BRELL
Summary
Electric power systems are complex objects of dispatching and management, requiring compliance with restrictions related to the reliability, safety, quality, and economy of their operating modes These requirements must be fulfilled by all participants that make up the technological basis of the electricity market. The EU strategy focuses on the support and protection of investments in the energy sector including RES consideration and energy efficiency patterns and contributes to the secure transit of energy supplies [2]. In this way, the Sustainability 2021, 13, 6860.
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