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Impact of Single-Phase Automatic Recloser of Critical Transmission Line on the Stability of the power Transmission Network

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Journal of power and Energy Engineering 2025年第2期13卷 43-56页

作者： Chuulan Natsagdorj Ganbat Gantamir Erdenebileg Doljinsuren Power Engineering School Mongolian University of Science and Technology Ulaanbaatar Mongolia Relay Protection and Automation Department National Dispatching Center of Mongolia Ulaanbaatar Mongolia Department of Engineering Etugen University of Mongolia Ulaanbaatar Mongolia

In order to increase the stability of the Mongolia power system, a single-phase automatic reclosing device (SPAR) was introduced on double-circuit power lines built with a size of 330 kV, operating on a voltage of 220 kV and a length of 250 km. These overhead power lines (L-213, L-214) connect the 220/110/35 kV “Songino” substation with the “Mandal” substation and form system networks. This paper presents the challenges encountered when implementing single-phase automatic reclosing (SPAR) devices and compares the changes in power system parameters before and after SPAR deployment for a long 220 kV line. Simulations and analyses were carried out using DIgSILENT powerFactory software, focusing on rotor angle stability, and the overall impact on the power system during short-circuit faults. The evaluation also utilized measurement data from the Wide Area Monitoring system (WAMS) to compare system behavior pre- and post-implementation of SPAR. The findings reveal that SPAR significantly enhances system reliability and stability, effectively mitigating the risk of oscillations and stability loss triggered by short circuits. This improvement contributes to a more resilient power system, reducing the potential for disturbances caused by faults.

关键词： Automatic Reclosing Single-Phase Automatic Reclosing relay protection Overhead power Lines system Stability Rotor Angle Stability

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Analysis of the Operation of Remote Backup protection on 110kV Overhead Lines When Connecting an Intermediate power Source

Analysis of the Operation of Remote Backup Protection on 110...

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International Youth Conference on Radio Electronics, Electrical and power Engineering (REEPE)

作者： Ruslan G. Isakov Vildan R. Sagirov Department of Relay Protection and Automation of Electric Power Systems Kazan State Power Engineering University “KSPEU” Kazan Russian Federation Department of Electrical Equipment Kazan National Research Technical University named after A. N. Tupolev - KAI Kazan Russian Federation

ISBN: (数字)9798331531836

ISBN: (纸本)9798331531843

Currently, there is a trend towards building their own generation among industrial enterprises, when owners, against the background of news about a possible shortage of capacity and an increase in the cost of electricity, are thinking about building their own generating plants. The implementation of these solutions on dead-end power transmission lines leads to problems in providing remote backup with a set of step protections on these lines. As part of this paper, the influence of connecting an intermediate power source to unsoldered transformers on measuring resistance at the protection installation site is proved. A formula has been obtained describing the effect of the rated power of an intermediate power source on the current measurement value at the protection installation site. A computational model has been created in the PSCAD software package, and a simplified algorithm for activating remote backup protection has been modeled. It was found that increasing the rated power of the intermediate power supply shifts the value of the resistance measurement to the left.

关键词： Resistance Sensitivity power measurement power supplies Current measurement Buildings Transformers Electrical resistance measurement protection Soldering

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Development and Techno-Economic Analysis of Solar power Plant Projects in Vietnam

Development and Techno-Economic Analysis of Solar Power Plan...

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International Youth Conference on Radio Electronics, Electrical and power Engineering (REEPE)

作者： Nam H. Pham Oleg N. Kuznetsov Canh T. Doan Electrical Power Systems Department Department of Relay Protection and Automation of Energy Systems National Research University “MPEI” Moscow Russian Federation Department of Electrical and Electronic Engineering Technology Institute of Engineering and Technology Vinh University Viet Nam Faculty of Engineering and Technology Hong Duc University Vietnam

ISBN: (数字)9798331531836

ISBN: (纸本)9798331531843

As global energy demand continues to rise, concerns about climate change, environmental issues, and the depletion of fossil fuel resources require a careful consideration of the use of renewable energy, including solar energy. Vietnam's solar power plant (SPP) capacity has expanded considerably in recent years. However, technical and economic calculations for large-scale solar power plants and comparisons with other power plants are still limited. In this paper, the technical and economic aspects of solar power plants will be evaluated, with key economic indicators such as net present value (NPV), levelized cost of energy (LCOE), internal rate of return (IRR), benefit-cost ratio (BCR), and payback period (PB) being analyzed for both current and future scenarios. The results show that all power plants are economically effective. Furthermore, with investment costs for solar power plants decreasing rapidly, solar power plants will have high economic efficiency in the future. The useful information for investing and developing renewable energy policies in Vietnam is also presented in this paper.

关键词： Economics Renewable energy sources power engineering Energy consumption Costs Reviews Solar energy Fossil fuels power generation Investment

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Impact of High Photovoltaic Penetration on the Voltage Stability of Vietnam's power system

Impact of High Photovoltaic Penetration on the Voltage Stabi...

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International Youth Conference on Radio Electronics, Electrical and power Engineering (REEPE)

作者： Nam H. Pham Oleg N. Kuzetsov Canh T. Doan Electrical Power Systems Department National Research University “MPEI” Moscow Russian Federation Department of Electrical and Electronic Engineering Technology Institute of Engineering and Technology Vinh University Viet Nam Department of Relay Protection and Automation of Energy Systems National Research University “MPEI” Moscow Russian Federation Faculty of Engineering and Technology Hong Duc University Vietnam

ISBN: (数字)9798331531836

ISBN: (纸本)9798331531843

Photovoltaics (PV) play an essential role in energy networks by promoting clean, sustainable energy and reducing reliance on fossil fuels. However, their operational characteristics introduce new challenges, particularly concerning grid reliability and voltage stability. In this paper, the impact of solar photovoltaic plant (SPP) penetration on voltage behavior in the central region of Vietnam is examined using dynamic models at different integration levels, ranging from 0% to 40%. The results reveal that while low SPP penetration has minimal effects, high penetration levels (30% and 40%) significantly reduce reactive power support, exacerbating voltage collapse risks. These findings underscore the necessity for advanced voltage and reactive power control strategies to ensure grid stability in high-SPP scenarios.

关键词： Photovoltaic systems Reactive power Reactive power control power system dynamics power system stability Stability analysis Threshold voltage Synchronous generators Reliability Voltage control

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Optimization of the Maintenance and Repair Plan for power Grid Equipment Using A Risk-Oriented Approach and Efficiency Indicators 7

Optimization of the Maintenance and Repair Plan for Power Gr...

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7th International Scientific and Technical Conference relay protection and automation, RPA 2024

作者： Yakunin, A.V. Kovalenko, A.I. Nikolaev, A.S. Kolobrodov, E.N. Ketova, T.V. Tsuran, M.V. Department of Relay Protection and Power System Automation National Research University "MPEI" Moscow Russia

ISBN: (纸本)9798331501105

Currently, the energy sector is transitioning from a system of preventive maintenance to performing technical maintenance and repairs (TM&R) based on the actual condition of equipment, including the use of a risk-oriented approach (ROA). This shift from preventive maintenance to condition-based maintenance in the energy sector is largely a necessity. An increase in equipment wear, averaging 65% across the industry, combined with a decrease in investment levels, has led to an underperformance of maintenance activities on critical equipment essential for the reliable operation of power facilities. © 2024 IEEE.

关键词： Condition based maintenance

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Development of Solutions for Automatic Change of Operation Parameters in 6-35 KV Distribution Networks 7

Development of Solutions for Automatic Change of Operation P...

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7th International Scientific and Technical Conference relay protection and automation, RPA 2024

作者： Lachugin, V.F. Vertoguzov, D.A. Voloshin, A.A. Kovalenko, A.I. National Research University 'MPEI' Department of Power System Relay Protection and Automation Moscow Russia

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Algorithm of Automatic Synthesis of Optimal Solutions for power systems based on the Method of Dynamic Programming 7

Algorithm of Automatic Synthesis of Optimal Solutions for Po...

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7th International Scientific and Technical Conference relay protection and automation, RPA 2024

作者： Voloshin, A.A. Voloshin, E.A. Kovalenko, A.I. Yakovlev, D.P. Astakhov, E.S. Polygalin, I.S. Romanov, D.A. National Research University«MPEI» Relay Protection and Automation of Power System Department Moscow Russia

ISBN: (纸本)9798331501105

Determination of technically and economically feasible design solutions for power distribution networks remains an urgent task of the electric power industry. Existing design methods, both manual and software, do not allow to fully automate the process and do not take into account distributed energy sources. The article proposes an algorithm for the automatic synthesis of the optimal structure and parameters of the electrical network scheme. To implement the algorithm the method of dynamic programming with 'collapsing' of solutions was used, which allowed to significantly reduce the search space and increase the efficiency of calculations. The software implementation of the algorithm was performed in the Java programming language with visualization of the obtained solutions using the *** package. To verify the effectiveness of the proposed approach, computational experiments were carried out on a 13-node scheme of the distribution network. Two tasks were considered: design of a new electrical network and development of the existing electrical network using the algorithm of automatic synthesis of the optimal solution for the power system on the basis of dynamic programming. Various scenarios including different network configurations and substation nominal voltage levels were analyzed in the experiments. The results showed that the proposed algorithm allows to efficiently find optimal solutions, taking into account both technical and economic aspects. © 2024 IEEE.

关键词： power distribution networks

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Modelling a distributed computing system for BigData processing and managing algorithms implementation in MicroGrids 2

Modelling a distributed computing system for BigData process...

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2nd International Youth Scientific and Technical Conference on relay protection and automation, RPA 2019

作者： Boltunov, Alexey Vasilev, Stepan Karpenko, Vladislav Voloshin, Alexander Voloshin, Evgeniy Moscow Power Engineering Institute Relay Protection and Power System Automation Dept. Moscow Russia

ISBN: (纸本)9781728163819

This paper deals with the main principles and requirements of building a distributed fault-tolerant computing system for MicroGrid needs. This includes hardware and software infrastructure for managing power generation, transmission, consumption and accumulation processes. The system is built on the base of ARM64 SoC computers and microservice paradigm. © 2019 IEEE.

关键词： system-on-chip

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Monitoring of Harmonic and Subharmonic Vibrations during the Operation of the Wind Farm 4

Monitoring of Harmonic and Subharmonic Vibrations during the...

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4th International Youth Scientific and Technical Conference relay protection and automation, RPA 2021

作者： Revyakin, V.A. Pletnev, S.V. Klimova, T.G. Dubinin, D.M. University «mpei» National Research Relay Protection and Automation of Power Systems Department Moscow Russia National Research Relay Protection and Automation of Power Systems Department Moscow Russia

ISBN: (纸本)9781728192703

To date, the use of synchronized vector measurement devices (PMU) makes it possible to implement distributed monitoring systems that differ from classical SCADA measurements (Supervisory Control And Data Acquisition). Since the technology of synchronized vector measurements allows obtaining high-precision estimates of all parameters of sinusoidal oscillations of industrial frequency, including information about the phase angle, with maximum speed and time synchronization with an accuracy of 1 microsecond compared to SCADA systems, these measurements can be used in the analysis of various dynamic processes and for their monitoring in real time. Such processes in the network are power fluctuations, low-frequency fluctuations, complex disturbances, cascade shutdowns and many other emergency situations that can affect the stability of the power system.

关键词： Vibrations Time-frequency analysis Wind speed SCADA systems power system stability Wind farms power system harmonics

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Modelling, Development and Research of A Device for Controlling power Flow between Microgrid systems for Implementing A Peer-To-Peer Electricity Trade between Prosumers 2

Modelling, Development and Research of A Device for Controll...

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2nd International Youth Scientific and Technical Conference on relay protection and automation, RPA 2019

作者： Voloshin, E.A. Voloshin, A.A. Bondar, D.S. Maksimov, R.S. Lukina, Y.K. Ententeev, A.R. National Research University Relay Protection and Automation of Power Systems Department Russia

ISBN: (纸本)9781728163819

In this paper a new type of devices capable of transmitting electricity according to the signed contract regardless of the prosumer network parameters are need to implement the proposed smart grid concept is proposed. These devices support the remote-control possibility to control the transmitted power setting. An energy router (ER) is a power semiconductor device for controlling power flows between power systems, supporting bi-directional power transmission according to the setting from the higher-level control system. The ER can provide two three - phase AC ports with 0.4 kV voltages, thus can be used for connection of local generators to power grids. To analyze the device behavior, an energy router digital model for a consumer voltage level (0.4 kV) provides a simplified equivalent model and control strategy was developed and studied in various circuit-mode situations. © 2019 IEEE.

关键词： Remote control

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