Energy Systems Research

Methodological Framework for Planning The Development of Mongolia’s Electric Power Systems and Energy Industry

B. Bat-Erdene — 2023-12-27

To successfully establish Mongolia's Unified Electric Power System (UEPS) and ensure its future participation in the global electricity market, it is crucial to create a scientifically supported methodology for the expansion planning and control of the country's electric power systems. The approach can and should be developed relying on the concepts provided for in the Mongolian Energy Development Policy Documents, with focus on the challenges of increase in the reliability, the growth of domestic electricity consumption, and the features of the external market. Modeling options and scenarios for the expansion planning of the UEPS of Mongolia are designed by means of systems analysis methods. This paper explores the research methodology utilized and presents a concise summary of its findings.

A Novel Technique for Technical and Non-Technical Power Loss Control and Monitoring in Power Distribution Systems as Based on the Data from the Automated System for Electricity Revenue Metering

T.T. Omorov — 2023-12-27

Uncontrolled power losses caused by electricity thefts in power distribution systems (PDSs) have a detrimental impact on technical and economic performance of these systems. Modern automated systems for electricity revenue metering (ASERMs), which are nowadays widely used for automation and computerization of processes in PDSs, lack digital technologies for separate estimation and monitoring of technical and non-technical power losses. The paper proposes a novel technique and an algorithm for its implementation based on the data obtained from electricity meters that are part of the ASERM structure. In order to ensure the solvability of the identification problem, we introduce the concept of a virtual network model representing the desired state of the PDS in the absence of ETs. The model serves as the basis for deriving algebraic equations. Such equations allow identifying technical and non-technical power losses in three-phase networks. Our research findings aim at further improvement of modern ASERMs and enhancement of their performance and reliability.

Impact of Integrated Renewable Energy Sources with Variable Power Output in Terms of Constrained Voltage Stability Limit

N.R. Rakhmanov — 2023-12-27

The paper is concerned with the development of a methodology for estimating the amount of balancing power in a system with a high penetration of renewable energy sources. To this end, it is crucial to analyze the influence of growing installed capacity of wind farms on the value of the balancing power of the energy system and random characteristics of its variability for various numbers of wind farms operating in the system. The possibilities of balancing power distribution are considered for characteristic critical load conditions of the system. The operating conditions of a real-world power system are simulated using wind speed measurement data obtained for the geographical locations of wind farms. The simulation is performed on a PC using developed programs for various combinations of these farms. The research involves constructing the relationships for the balancing power, determining the conditions for its reduction and the conditions for its limitation in terms of voltage stability in the balancing part of the system.

Ensuring Reliability and Sustainable Development of the Central Asian Power System in the Context of Growing Energy Consumption

T.Kh. Nasirov — 2023-12-27

A set of necessary conditions for sustainable development of the Central Asian Power System (CAPS) is considered with an emphasis on economic, environmental, and social aspects against the backdrop of widespread integration of renewable energy sources (RES). Such conditions are provided for by the decisions of the governments of the countries in the region in the context of growing energy consumption. The efficiency of utilizing renewables in Central Asia is assessed. The findings highlight primary scientific and engineering issues related to the large-scale use of renewables in the power system and ways to address them. The use of energy storage facilities in power systems of the Central Asian countries, as well as the joint implementation of renewables and energy storage systems in the CAPS are discussed.

The Role of Nuclear Energy in Enhancing Energy Security of the Republic of Belarus

A.A. Mikhalevich — 2023-12-27

The paper highlights and examines the issues related to the limited natural reserves of fossil fuels in the Republic of Belarus. Almost 80 percent of the demand for energy in the economy and social sector of the country is met through the import of energy resources. In this context, one of the priority objectives for the energy development in Belarus is the gradual replacement of imported oil and natural gas with local fuel and energy resources, including nuclear energy. The world’s experience in the development of this area is shown. Analysis is made of the measures to achieve the necessary indicators of energy supply to the national economy and the development of the energy sector, in the structure of which the nuclear power plant is beginning to play a significant role. The activities on strengthening the national energy system in Belarus began in June 2021, when the first unit of the Belarusian nuclear power plant was put into commercial operation. The findings show that since then there has been a gradual decline in the shortage of necessary energy resources, reduction in reliance on imported hydrocarbons, and elimination of other threats and uncertainties for sustainable, reliable, and efficient advancement of the energy sector aiming to achieve carbon neutrality of the economy of the Republic of Belarus in the near future.

The Influence of Unbalanced Loads in the Electrical Network on the Operation of Transneft PJSC Power Consumers

S.V. Pavlenko — 2023-12-27

The study focuses on an assessment of the power quality of electrical consumers of Mariinsk substation of the Transneft–Western Siberia JSC and Skovorodino OPS-21 of Transneft–East LLC in the power systems adjacent to the Trans-Siberian Railway and Baikal–Amur Mainline. The dynamics of bringing the power quality indices at the OPS-21 to the normalized values of the State Standard (GOST 32144-2013) when using SVC-20/20-10 at this station is shown. The design solutions of the Round Table “Low quality of electricity in 35-220 kV electrical networks supplying electrified railways and public consumers. Technologies for its normalization” were noted within the framework of the International Forum “Electrical Networks”, Moscow, November 22–25, 2022.

Using of Evacuated Solar Tube Collectors for Heating in Central Yakutia Conditions

D.V. Prokhorov — 2023-12-27

In the Department of Energy Problems of the IPTPN SB RAS an experimental stand for a solar heat supply system based on the evacuated solar tube collector was assembled. During the experiment the incident solar radiation on the collector surface and the corresponding thermal energy received from the evacuated solar tube collector were measured. Data collection began at the end of 2021 and is still ongoing. The obtained experimental data will allow to study the efficiency of the evacuated solar tube collectors in the climatic and natural conditions of Yakutsk (Central Yakutia) and measure the intensity of solar radiation. The obtained research results will make it possible to determine the effectiveness of using solar heating systems based on evacuated solar tube collectors in the conditions of Yakutia, as well as their feasibility. Features of the solar heating system operation in extremely low temperatures have been identified. Recommendations to take these features into account are given. Based on the data received the database of the solar heating system operation and the database of solar insolation were developed and registered.