6 октября 2021
АНОНС «ЭЛЕКТРОЭНЕРГИЯ. Передача и распределение» № 5(68), сентябрь-октябрь 2021
12 статей в открытом доступеОформить подписку
РАБОТЫ ПОД НАПРЯЖЕНИЕМ
РАБОТЫ ПОД НАПРЯЖЕНИЕМ
РЕЛЕЙНАЯ ЗАЩИТА И АВТОМАТИКА
РЕЛЕЙНАЯ ЗАЩИТА И АВТОМАТИКА
РЕЛЕЙНАЯ ЗАЩИТА И АВТОМАТИКА
ДИАГНОСТИКА И МОНИТОРИНГ
ДИАГНОСТИКА И МОНИТОРИНГ
Topical Issues of Relay Protection and Automation Development in Conditions of Digital Energy Transition
Interview with Pavlushko S.A., First Deputy Chairman of SO UES Board
Virtual Session of CIGRE Dedicated to its 100-year Anniversary
ABB Technologies of Augmented Reality Raise Operation to a New Level
POWER SYSTEMS DEVELOPMENT
Optimization of the Russian Unified National Electric Grid Expansion Using Geoinformation Technologies
Drachev P.S., Popova O.M., Khanaev V.V. (ESI SB RAS, Irkutsk)
Abstract. The paper discusses a methodological approach to the long-term electric transmission system expansion, taking into account its infrastructure function and the basic principles of electric energy market. A description of the mathematical tools is presented, as well as a practical example of the implementation of the described methodology on the problem of developing the Unified national electric grid (UNEG) of Russia until 2030. Examples of visualization of the results obtained on the map are given.
Keywords: network development, scenarios, options, optimization, modeling, UNEG, visualization
The Integration of Isolated Power Systems of Yakutia Central and West Parts into the Unified Power System of Russia: Prerequisites, Stages, Effects
Petrov N.A., Pavlov N.V., Zakharov V.E. (IPTPN SB RAS, Yakutsk);
Podkovalnikov S.V., Ryabykh I.V. (ESI SB RAS, Irkutsk)
Abstract. The integration process of the isolated power systems of Yakutia into east part of Unified Power System of Russia was considered. Features of Yakutia electric power sector were presented. Prerequisites and sequence of stages of the integration were analyzed. Systemic effects of connecting the isolated power systems of Yakutia to the Interconnected power system of Far East were identified. Particularly, changes in the electric power tariff were analyzed, and information on improving the reliability of electricity supply was presented.
Keywords: centralized power supply zone, isolated power systems, electric ties, synchronous operation, integration systemic effects, whole- sale electricity market, tariffs, reliability
Increasing the Reliability of the Internal Electric Network of the Wind Power Plant
Dadonov A.N. (SO UPS, JSC “Branch Regional Dispatching Office, Energy System of Samara”),
Krotkov E.A. (Samara State Technical University)
Abstract. In this paper analyzed of typical topologies of an internal electrical grid with the wind power plants according to the reliability criteria of an electrical grid at single failures, calculated indicators of reliability for various topologies, as well as an analysis of the results on assessing the levels of technological transmission losses power. Based on the results of the calculated data proposed own electrical grid with the wind power plants.
Keywords: wind power plants, topology of the electrical grid, reliability of an electrical grid
Use of Segmented Static Frequency Characteristic to Support the Charge Level of Energy Storage System
Ilyushin P.V. (Energy Research Institute of the Russian Academy of Sciences, Moscow),
Shavlovskiy S.V. (Electronmash JSC, Saint-Petersburg)
Abstract. Distributed generation (DG) facilities operating on the base of fuel generating units (GUs) and renewable energy sources (RES) are widely used in Russia, including isolated power regions. Rough changes of load or electric energy generation by RES facilities can lead to impermissible short-term deviations of frequency/voltage that result in tripping performed by fuel GU protection devices. Application of energy storage systems (ESSs) taking into account high speed of their inverter operation enables compensation of instantaneous imbalances of active and reactive power, thus, preventing disconnection of fuel GUs and interruptions of consumer power supply. A modified method of supporting the ESS charge level (SoC) from changing the static frequency characteristics that does not require a data communication channel between ESS and the dedicated GU is proposed and the advantages of its application are shown in this article. This method consists in dividing the ESS static characteristics into separate segments with the different gain slope (frequency droop) depending on the current ESS load and SoC, and shifting the static frequency characteristics in accordance with the definite law. Results of simulation modeling of the proposed method of ESS SoC support in different load operating modes in an isolated region carried out in MATLAB Simulink that proved its efficiency are provided in this article.
Keywords: energy storage system, diesel-generator installation, isolated power region, static frequency characteristics, frequency droop, charge level
Feasibility Study of Energy Storage System Application for Residential Users in Municipal Power Supply Systems
Demidov K.A., Shvedov G.V. (NRU “MPEI”, Moscow)
Abstract. Sufficient inequality that is typical for daily power consumption of residential users has negative impact on power system operation. Complexity of changing the demand curve for this group of consumers related, mainly, to difficulty of changing everyday habits of people and their correlation with the rhythm of life of a citizen, forces to look for alternative methods of demand curve leveling. Feasibility of using the energy storage system for this purpose by the example of a multifamily residential building with electric stoves is studied in this article. It turned out that installation of the energy storage system with regard to its actual price and valid three-zone tariffs in the Moscow city is paid back in 6 years. In case of energy tariff regression in the night zone, its payback time reduces essentially. Study of tariffs in different RF subdivisions is provided together with calculation that defines optimal ratios of peak (Т1) and night (Т2) zone tariffs to achieve the 5-year payback time of energy storage systems.
Keywords: demand curve, electric power consumer, energy storage, power supply system
Study of Actual Electrical Loads for Private Residential Structures
Soluyanov Yu.I. (Roselektromontazh Association),
Fedotov A.I., Chernova N.V., Akhmetshin A.R. (Kazan State Power Engineering University)
Abstract. Investigations of electricity consumption of private residential structures (PRS) located in the city of Kazan carried out by Association Roselektromontazh have revealed the fact that actual PRS electrical loads are considerably lower than the declared 15 kW. As a result, the actual level of network loading of gated communities is about max. 20% of the estimated value, provided that comparison of winter and summer time loads has shown that winter loads are in average 12% higher. The objective of investigation was to review calculated electrical loads to obtain considerable economical effect from cost reduction of the power supply system and increase of PRS demand due to reduction of its incremental cost. Review of PRS calculated electrical loads was carried out by means of smart energy metering systems.
Keywords: declared electrical power, actual power consumption, “locked” power, energy efficiency, process connection, power supply system, energy intensity, private residential structures
Application of Monte-Carlo Method for Assessment of Human Factor Impact on Power System Reliability in Online Switching Conditions
Gerasimov V.S., Nasyrov R.R. (NRU “MPEI”, Moscow)
Abstract. Online switching is one of the main means of power system control. Successful online switching (from the point of view of reliability) requires failure-free operation of all components involved, i.e. the human and the equipment. The majority of articles dedicated to study of reliability issues consider the impact of equipment, not the human factor. However, investigation of accidents shows that the human is a key source of accident risk. The objective of the article is to review the procedure of the power system reliability assessment with respect to human factor impact developed by the authors.
Keywords: power system reliability, human reliability assessment, online switching, Monte-Carlo method
Set of Technical And Economic Modeling Tasks of Electrical Energy Transmission in Power Grids
Pazderin A.V., Bartolomey P.I., Lyukhanov E.A. (Ural Energy Institute of the Ural Federal University named after the first President of Russia B. N. Yeltsin, Yekaterinburg); Pazderin A.A. (PJSC “Federal Grid Company of the Unified Energy System” – Ural branch, Yekaterinburg)
Abstract. The article discusses the mathematical model fundamentals of the power distribution problem, that makes it possible to simulate the main power grid technological process activity – transmission and distribution of electrical energy (EE) flows. The energy distribution problem application is associated with EE balances, technical losses evaluation, commercial losses localization, unreliable EE metering devices identification as well as their metrological characteristics monitoring by calculations. State estimation and observability theory methodological approaches provide EE metering systems development optimization and additional metering units installation that allow observability and redundancy criteria numerically assessment. Based on the EE transmission process model, a subsystem for calculating and analyzing financial and economic indicators of power grid activity has been developed. The power-cost distribution model relates the technological parameters of the EE transmission process with its economic indicators. This model provides cost distribution of transmission services and their components between consumers individually, taking into account electrical equipment loads and power losses assessment. At the same time model is used to estimate the unit cost of EE transmission for all power grid nodes.
Keywords: energy distribution, condition assessment, power energy metering, power losses, power-cost distribution, transmission costs, tariff setting, power electrical energy flows, power-costs flows, elementwise power-costs, nodal tariffs, mathematical model
Development of Voltage Distortion Compensation System
Rosneft Oil Company, PJSC
Live Work: Made in Tatarstan
EGI KLUBB Truck-Mounted Hydraulic Lifts with Insulating Arms for OLTC
Safe Technology, JSC
Modern Aspects of City Outdoor Lighting System Operation
OVERHEAD TRANSMISSION LINES
Development of the System of Continuous Automated Monitoring of Overhead Transmission Lines
Rosseti Centre, PJSC
Efficient Methods of Fault Location Detection in 0,4-20 kV Networks
Rosseti Tomsk (PJSC TDC)
Increase of MV cable service life
ProtectorLine® – cost-effective solutions for construction of low-voltage and low-current cable lines
RELAY PROTECTION AND AUTOMATION
How to solve the problem of sustainable power supply of industrial enterprise
RT Soft Group of companies
Introduction of Digital Remote Control of Equipment and Microprocessor-Based Relay Protection and Automation Devices at 110-220 kV Substations of Rosseti Moscow Region PJSC
Gvozdev D.B., Gribkov M.A. (PJSC Rosseti Moscow Region); Borozdin A.A. (OOO Smart Grid Systems);
Rybakov A.K. (RT Soft Group of companies)
Abstract. The results of research and development “Arrangement of digital remote control of equipment and relay protection and automation devices of electric switchgears of distribution network substations” and main benefits of this project implementation as well as specific aspects of remote control of relay protection and automation and process control devices and functions of different producers with regard to modern requirements to cyber security and digital communication channels are presented in this article.
Keywords: digital remote control of equipment and relay protection and automation devices, microprocessor-based relay protection and automation devices, process control system
Distributed Peripheral Complex for Automated System Construction
OOO NTTS Mekhanotronika
A New Technology of Drawing Switchgear Diagrams
Grinev N.V. (Branch of “Rosseti FGC UES” – MES of the Urals, Yekaterinburg)
Abstract. A new technology of drawing switchgear diagrams and a new appearance of HV circuit-breakers that increase reliability of electric installations are proposed in this article.
Keywords: electric installation, switchgear, HV circuit-breaker, electrical connection diagrams, switching, construction and reconstruction
DIAGNOSTICS AND MONITORING
Application Practice of Advanced Digital Technology TRANSEC as a Means of Transformer Reliability Improvement
Streamer Electric AG
Power Companies in Digital Future
6th All-Russian Labor Protection Week
Six Steps: How to Make Dermatologic Protection Means Purchase Reasonable and Cost-Efficient
Functionality and results of pilot operation of hardware-software system of employee health management on the base of Tulenergo, affiliate of PJSC IDGC of Center and Volga Region
Protective Grounding as a Way to Ensure Safe Work on the Disconnected Power Line Which is Under Induced Voltage. Part 2
Gorshkov A.V. (EnergoTest LLC, Moscow)
Abstract. The main damaging factor in the production of work on a disconnected overhead line is the touch and step stresses that occur when the voltage is ap- plied to the disconnected overhead line. The method used in practice to ensure the safe production of work on a disconnected overhead line has a relatively low reliability of protecting personnel from damage by touch and step stresses. The reason for this is, firstly, significant omissions of the applied technique, which lead to the appearance of unacceptable values of touch and step stresses, and secondly, ineffective measures to protect personnel from damage by these stresses. To guarantee electrical safety in the production of work on a disconnected overhead line, it is proposed to use the method of protective grounding, based on the principle of controlled reduction of the induced voltage at the workplace to acceptable values using a protective earthing device. On the basis of the method of protective grounding, a method has been developed to guarantee the safe conduct of work on a disconnected overhead line. The main provisions of the practical implementation of the developed methodology based on digital technologies in the framework of the concepts “Digital substation” and “Digital Transformation 2030” are formulated.
Keywords: induced voltage, touch voltage, step voltage, overhead power line, disconnected power line, protective grounding, electrical safety, digital technology, digital substation, digital transformation
Measures to Reduce the Injuries Level in Electric Power Companies
Borovkova A.М., Kravchenko M.V., Makulova E.I., Pavlova A.A., Morozov D.V. (NRU “MPEI”, Moscow)
Abstract. The article considers additional measures to reduce the level of injuries in the energy industries, which are not included in the standard list of measures to improve working conditions and labor protection. Companies from the most energy-intensive industries are also taken for analysis. A review of the measures contained in comprehensive programs to reduce the risk of personal injury showed that for the most part, organizational and technical additional measures are used. Based on the results of a comparative analysis of the measures used in various industries, trends in the development of organizational measures in the programs of electric power companies were identified. Meanwhile, technical measures to reduce injuries prevail in enterprises of other industries.
Keywords: labor protection, occupational injuries, measures to reduce the level of injures, electric power companies
Lessons Learned from Accidents
Russian Federal Service for Ecological, Technical and Atomic Supervision