25 июня 2018
«ЭЛЕКТРОЭНЕРГИЯ. Передача и распределение» № 3(48), май-июнь 2018
АКЦЕНТ
СОБЫТИЯ
УПРАВЛЕНИЕ СЕТЯМИ
УДК 621.3.016.25:621.316.72.001.24
УПРАВЛЕНИЕ СЕТЯМИ
КАЧЕСТВО ЭЛЕКТРОЭНЕРГИИ
КАЧЕСТВО ЭЛЕКТРОЭНЕРГИИ
ЭЛЕКТРИЧЕСКИЕ СЕТИ 20 КВ
КАБЕЛЬНЫЕ ЛИНИИ
ОБОРУДОВАНИЕ
ОБОРУДОВАНИЕ
ДИАГНОСТИКА И МОНИТОРИНГ
ПОЖАРНАЯ БЕЗОПАСНОСТЬ
TABLE OF CONTENTS EMPHASIS
A conceptual approach to implementation of a risk-oriented system for monitoring and readiness assessment of electric power engineering entities to work in heating season
EVENTS
Meeting of the Presidium of the Presidential Council for economic modernization and innovations of Russia
Digitalization in power grid. Purposes and objectives. Approaches and opinions
PJSC “IDGC of North-West” project on networks digitalization is presented at SPIEF-2018
Sergey Sobyanin opened the first digital substation in the Moscow region
Never look back!
GRIDS MANAGEMENT
Modern controlled reactive power sources and their application in electric power systems. Part I
Abstract
.
The paper considers modern FACTS technologies and their application in modern electric power systems, including the Unified National Power Grid of Russia.
Problems of integrated automation and optimization of distribution networks operating modes
TELECOMMUNICATIONS AND CONNECTION
Construction of communication networks in the distribution electric grid complex
POWER QUALITY
Estimation of consumer impact on voltage distortion in electric network
Abstract. The paper considers the estimation of consumer impact on voltage unbalance and unsinusoidality in electric network. Impossibility to correctly identify the certain consumer contribution to
-th harmonic voltage or negative sequence voltage in network node is shown. A method for estimating the consumer impact on voltage distortion using individual consumer characteristics of distortion voltage is proposed. Methods for preliminary processing of measured currents and voltages are developed. Those methods allow to determine afore-mentioned consumer characteristics in real time without special switching in electric network. The results of an experimental evaluation of real electric loads impact on voltage unsinusoidality are presented.
Investigation of the impact of a large power-supply system on transients during disturbances in external network
20 kV ELECTRICAL GRIDS
IIncrease of 20 kV electric networks reliability in power supply systems in megacities
Abstract
.
The paper considers rational construction of distribution electric networks schemes for modern megacities in the context of reliability enhancement. The loads growth, increased requirements to power supply reliability and special features of transition from rated voltage 10 kV to 20 kV are considered. The paper also analysis changes in the construction of power distribution scheme, composition and parameters of used electrical equipment and shortcomings of existing open-loop network (such as loop and biradial power supply schemes) built on a single-link and two-link principle. The paper provides recommendations related to organization of 20 kV networks operation (with regard to relay protection and automation), implementation of 20 kV networks with enhanced reliability, as well as information on the progressive trend of distribution network digitalization.
OVERHEAD TRANSMISSION LINES
The national standard of the passport for overhead line with rated voltage 35 kV and above is approved
PJSC “Rosseti” standard on bird protection devices. Experience of application
Integrated solutions for 6–35 kV overhead line with protected wires
Reliability and resource capabilities of various lightning protection cables
CABLE LINES
Thermal regime of cable line in polymer pipe
Abstract
.
The paper considers thermal regime of a three-phase cable line laid in a narrow polymer pipe. A numerical model concerning conductive, convective and radiant heat exchange in the cable line was developed. The model was verified by comparing simulation results with experimental findings related to thermal regime of the cable line. Correction coefficients regarding all the heat exchange mechanisms in a simplified solid model were determined. Those coefficients are suitable for express engineering calculations.
What you need to know about polymer cable pipes
Selective autoreclosure for mixed high and extra high voltage overhead-cable lines
Abstract
.
In the article the new method (patent pending) for the selective AR implementation on the HV and EHV power lines of different configuration is proposed. The method is applicable for different OCL configurations: the cable part or parts can be located on the several distances from the substation (relay protection and AR location), cable parts can have different types of shield grounding (one or several point shield groundings with or without shield transposition) etc. The proposed selective AR system can be centralized or decentralized depending on the OCL configuration and based on the direct/indirect cable shield current determination and comparison. The method uses the latest achievements in photonic. The proposed principle of cable fault determination on OCL investigation results by means of simulation models and the selective AR prototype device test results by means of RTDS are presented. At the moment selective AR prototype device is putting into the operation on the 500 kV OCL with several cable parts in Moscow region.
EQUIPMENT
System of electrical insulation state control in networks with voltages up to 1000 volts with dead-earthed neutral
Abstract
.
The accident-free functioning of distribution networks of power supply systems with a deadly neutral to 1000 V depends largely on the frequency of single-phase short-circuits (SC), which are the most common type of insulation damage. The article presents the concept of a system for monitoring and diagnosing the state of isolation of electric grids with a deadly grounded neutral, which makes it possible to move from the fight against the consequences of insulation violations to their prevention and, as a result, to significantly increase their electrical fire safety.
Innovative electrical equipment for nuclear power plants
Abstract
.
Innovative developments of transformer and reactor equipment are described. The equipment provides energy efficiency, fire and explosion safety and reliability of nuclear power plants electrical equipment.
CJSC “ZETO” integrated solutions for construction and modernization of power plants and substations
DIAGNOSTICS AND MONITORING
Research of transformer oil samplers metrological characteristics
FIRE SAFETY
Application problem of cable with aluminum alloy conductors in residential and public buildings
Abstract
.
In accordance with the orders No. 968 dated October 16, 2017 and No. 1196 dated December 20, 2017 promulgated by the Minister of Energy of the Russian Federation A.V. Novak, the necessary changes have been made to the existing wiring regulations. From now on modernized aluminum alloys No. 8030 and No. 8076 have been returned for electrical wiring application in residential and public buildings. In appendix to the order, the types of networks and the conditions for new cables application are contained. This paper considers the results of the research carried out at FGBU VNIIPO of EMERCOM of Russia, which contributed to the appearance of afore- mentioned orders.
Сomment
of
INDUSTRIAL INJURIES
Lessons learned from accidents
LABOR PROTECTION
Safety ensuring in operation under induced voltage
Abstract
.
The paper considers and systematizes the basic requirements for safety ensuring in operation under induced voltage. Approach to formation a list of overhead lines under induced voltages in accordance with “Rules for labor protection when operating electrical installations” is considered. Recommendations providing safe work on deenergized overhead lines under induced voltage are given. Reasons of induced voltage occurrence, mechanism of its formation, its components and reduction measures are considered.
EXHIBITIONS AND CONFERENCES
New technologies for reliable power supply
Power and distribution transformers. Reactors. Diagnostic systems
VI Russian International Energy Forum
Children draw in PJSC “Rosseti”
PERSONNEL TRAINING
Final of “CASE-IN” championship found out the best student engineering teams of 2018
JOURNEY THROUGH THE PAST
“There is a very serious situation in power industry of the country …”