scholarly journals STATE STIMULATION OF TRANSFORMATION OF POWER INDUSTRY

2020 ◽  
Vol 10 (4) ◽  
pp. 320-329
Author(s):  
V. A. Zubakin
Keyword(s):  
Power Supply ◽  
Business Models ◽  
New Technologies ◽  
Electrical Power ◽  
General System ◽  
Pilot Project ◽  
Power Industry ◽  
Electrical Power System ◽  
Distributed Power ◽  
New Type

Transition to digital technologies in management of power industry at all levels – an inevitable consequence of the technical progress which has generated opportunities for diversification, decarbonization and decentralization. Thus it is necessary to recognize that digitalization in power industry is NOT automation, and first of all creation of new business models, services and the markets with a support on possibility of digital economy. In this article questions of transformation of architecture of power industry, and also the main restrictions are considered: absence in regulatory base of new opportunities for consumers; general system inefficiency; impossibility “to legalize” appearance of new subjects (active consumers and prosumers, operators of micropower supply systems and aggregators of the distributed power objects, various service organizations), and also to deregulate the relations between them, to standardize interaction interfaces with EEC, to transform the energy markets.In article it is offered for transition to new digital power to make corresponding changes to the legislation: to enter new type of participants of the market (the active consumer, an active power complex), operated intellectual connection carrying out the standard with the electrical power system, completely responsible for management of the power supply and thus having the minimum regulatory restrictions on organizational model of the work; to improve rules of functioning of trade systems for creation of the markets of the distributed power providing an effective exchange of goods and services between traditional participants of the markets and participants of new type; to enter possibility of application of technologies of the coordinated management of the distributed sources and consumers of energy, systems of storage of energy, means of regulation of loading (“aggregators”) for the purpose of increase of efficiency of their use and participation in the electric power and power markets, including rendering system services and performance of other functions in these markets (the pilot project of such system is realized under the leadership of the author of the present article by subsidiary PAO “Lukoil” “Energy and gas of Romania”); to increase technological and economic flexibility of conditions on reliability and quality of power supply, creation of possibility of a choice by the consumer of conditions of power supply necessary for him and the account them in cost; to enter the accounting of the opportunities given by “new” decisions, at an assessment, formation and implementation of investment programs of the adjustable companies (including introduction of a technique of an assessment of investment projects at possession cost on all life cycle of the decision); to replace cross subsidizing of the population by industrial consumers with mechanisms of address social support and / or with system of restriction of volumes of consumption on reduced rates (“соцнорма”); to refuse further deployment of system of subsidizing of power supply of one regions at the expense of consumers of other regions (as it leads to growth of inefficient power consumption in the subsidized regions, not provided with available generation and infrastructure); to change norms of technical regulation, norms of design on the basis of new technologies; to make changes to programs of development of the infrastructure organizations of power industry taking into account trends of diversification, decentralization, decarbonization and a digitalization; to provide possibility of stimulation, including tariff, implementation of regional programs (pilot and regular), aimed at the complex development of power industry on the basis of new approaches, technologies and the practician, and also the hi-tech companies of small and medium business providing development.

scholarly journals Modern Problems of Increasing Coal Mines Power Supply Efficiency

2019 ◽  
Vol 105 ◽  
pp. 03026 ◽  
Author(s):  
Fedor Nepsha ◽  
Roman Belyaevsky ◽  
Vladimir Efremenko ◽  
Kirill Varnavskiy
Keyword(s):  
Power Supply ◽  
Industry 4.0 ◽  
Electrical Power ◽  
Coal Mines ◽  
Coal Industry ◽  
Design Stage ◽  
Cyber Physical System ◽  
Electrical Power System ◽  
Rational Management ◽  
Modern Technologies

In this article, the authors consider the main problems of increasing the efficiency of coal mines electrical power system (EPS). The identified problems are divided into two groups: problems that can be solved at the design stage and problems that can be solved at the operation stage. Within each group, the authors consider various problems and propose possible solutions. It is noted that as a result of the solution of formulated problems it is possible to form the problem of developing an intelligent coal mines EPS. To solve this problem it is necessary to use modern technologies such as IoT (Internet of Things) and BIG DATA. In prospective it will allow to create a unified cyber-physical system uniting the virtual and real worlds within the framework of the coal mining technological process and ensuring the rational management of the coal mine EPS by the criterion of minimizing the energy consumption for extracting one ton of coal. As a conclusion, the authors note the necessity of solving the formulated problems for the implementation of the “Industry 4.0” concept, which has great importance for the Russian coal industry.

scholarly journals Refining the Power Station Design of the All-Electric Warship

2019 ◽  
Author(s):  
W Edge ◽  
R Partridge ◽  
E Maxeiner
Keyword(s):  
Power Systems ◽  
Power System ◽  
New Technologies ◽  
Electrical Power ◽  
Building Blocks ◽  
High Energy ◽  
Concept Design ◽  
Electrical Power System ◽  
The Impact ◽  
Service Experiences

The next generation of large surface combatants will feature a number of challenging hurdles with regards to performance, complexity and capability whilst being mindful of tomorrow’s fiscal pressures. Over the past two decades, new warship programmes have focussed on more complex, multi-role capabilities necessitating more adaptable mission and platform systems. With tomorrow’s vessels facing a service life between 35-50 years the selected power systems need to be sympathetic of today’s requirements as well as through life technology insertion for tomorrow’s needs. To facilitate this, a number of tomorrow’s warships are looking to adopt an all-electric architecture making use of developing energy storage technologies and more power dense prime movers. Whilst this in itself is no revelation, the impact that electric weapons and sensors have on an electrical power system, as well as the added costs incurred through provision of electrical margins, means it becomes imperative that design experience, lessons learnt, and evolving technologies are all considered during the concept design phase. Electrification of warships has been commonplace since the early 1990s and in-service experiences on platforms with Integrated Power Systems (IPS) are now informing the requirement set for their replacement vessels. The DDG1000 Destroyer as an example, at sea since 2013, has yielded some valuable insights in areas of design optimisation and resilience that can benefit future combatant types. These experiences and the proven products on board these vessels will be augmented by new technologies and configured as part of new architectures to service the new types of loads that accompany the deployment of high energy weapons and sensors. Meeting these demands in an affordable, efficient, resilient and reliable manner will be key to ensuring the future platform’s success and longevity. This paper aims to visit the key in-service experiences of today’s all electric ships whilst considering core aspects of future ‘second generation’ all electric ship design. This will include the need for power system ‘granularity’; investigating the building blocks of power generation that make up these complex systems, whilst analysing the maturity of their constituent parts and the enabling technologies that make these systems possible.

Research on Synthesis Control Technology for Aircraft Electrical System

2012 ◽  
Vol 203 ◽  
pp. 202-206
Author(s):  
Hang Xu ◽  
Tao Zou
Keyword(s):  
Control System ◽  
Power Supply ◽  
Power Supply System ◽  
Fault Tolerant ◽  
Electrical Power ◽  
Supply System ◽  
Electromechanical System ◽  
Electrical System ◽  
Electrical Power System ◽  
Aircraft Flight

The airborne electromechanical system is essential to ensure the aircraft flight and it is most complex system in the aircraft, the aircraft intelligent power supply system and the aircraft electrical system synthesis control is the basis of airborne integrated electromechanical system. The paper gives up the hardware and software compositions and operation features of the aircraft electrical synthesis control system under based on the current situation of science and technology. It expounds the function and structure of PSP, ELMC and RT, the demands of BIT technique and fault tolerant design of electrical power system. It refers design scheme of electrical synthesis control system according to developing trends of aircraft electrical system.

Development of China's Electrical Power System

1989 ◽  
Vol 7 (5) ◽  
pp. 328-336
Author(s):  
David Denny
Keyword(s):  
Power System ◽  
Electric Power ◽  
Power Supply ◽  
Electrical Power ◽  
Foreign Technology ◽  
Industrial Output ◽  
Electrical Power System ◽  
Transmission Networks ◽  
Electric Power Supply ◽  
Output Only

The downtrend in electrical output, 10-14% 1977-79 to 6% 1979-84, was reversed to 7.4% between 1980 and 1987 when 35,000 Mw of capacity was added, transmission networks were expanded and regional grids linked. Part of this success arose from policies that replaced a monolithic system of bureaucratic planning to involvement of local interests and decentralization. Chinese organizations have also been able to take advantage of foreign technology and investment. Nevertheless, industrial output only reached 75-80% of its potential due to inadequate electric power supply.

Degraded Power Supplies

2016 ◽  
Author(s):  
Maja Lundbäck ◽  
Mattias Karlsson
Keyword(s):  
Power System ◽  
Power Supply ◽  
Nuclear Power ◽  
Electrical Power ◽  
Power Supplies ◽  
Operational Experience ◽  
Electrical Power System ◽  
Best Available Technology ◽  
Available Technology ◽  
Safety Systems

The electrical disturbance in Forsmark 2006 [3] led to increased attention being paid to the power supplies of nuclear power plants and their role in safety system reliability, both nationally and internationally. Since then numerous disturbances similar in nature have occurred in the electrical power supply which raises questions whether best available technology (BAT) has been utilised in the design and analysis of the electrical power supply of the safety functions of nuclear facilities. On repeated occasions this type of disturbances has had an impact on redundant parts of several safety systems due to functional dependencies between these. The frequency of these occurrences has been unexpected. The Swedish Radiation Safety Authority (SSM) has decided to write this document to clarify the regulators position on this issue. The document is also intended to support SSM:s assessments and evaluations of the Licensees efforts regarding degraded power supplies. An assessment of nuclear power plant electrical power systems is necessary in the light of the past years’ operational experience [1–7], where disturbances in the electrical power supply on repeated occasions have caused a power supply with degradation severe enough to challenge plant safety. As the potential consequences of such a degraded power supply can be severe it must be proven that the frequency of such occurrences is tolerably low. Furthermore, it is important to consider experiences from known situations with degraded power supplies, to enable a reasonable approach to identify and take counter-measures based on the root-cause and ensure utilisation of best available technology. A sufficient approach to enable prevention, protection and mitigation against this type of disturbances has been difficult to identify. Actual events and conditions causing a degraded power supply have often been complex in nature and difficult to anticipate, wherefore events and conditions which has not yet occurred are difficult to foresee. For this reason it is deemed most effective to identify and implement proportional measures that enhances the independence of the power supplies, such that a degraded power supply with a higher reliability is prevented from propagating to multiple parts of the safety systems. In this memorandum, SSM describes a state-based approach to analysing electrical power system functionality in different states of degraded power supply. The approach is intended to identify potential design weaknesses and measures to enhance robustness. Such an approach is viewed as more favourable in facilitating the identification of such measures, which may otherwise be neglected due to an estimated low frequency of occurrence, or missed due to incomplete identification of possible events and conditions. Furthermore this document describes how an assessment of electrical power system design can be performed, where the lowest common denominator from operational experience e.g. [1–7] is identified and counteracted. Actual occurrences of degraded power supplies, which all have been “unknown during the event identification process” but “well-known electrical phenomena”, can be described as unidentified degrading conductive disturbances.

scholarly journals Modelling and Analysis of Deregulated Electricity Market Operations

2019 ◽  
Vol 8 (4) ◽  
pp. 5581-5585
Keyword(s):  
Electricity Market ◽  
New Technologies ◽  
Electrical Power ◽  
Power Industry ◽  
Economic Incentives ◽  
Power Exchange ◽  
Decision Variables ◽  
New Business ◽  
Total Profit ◽  
Set Up

Deregulation in power industry is restructuring of the rules and economic incentives that government set up to control and drive the electrical power industry. Restructuring in electricity industry will create new business opportunities where new firms selling new products and services will appear, consumers will have alternatives in buying electricity services, and new technologies such as metering and telecommunication devices will develop. Bidding by participants is one of the major challenges. To overcome this issue, strategic bidding models are being developed based on market structure, auction rules and bidding protocols. This paper proposes to formulate an optimal bidding strategy algorithm for DisCos and analyze its impact in the market operations. The bidding optimization is aimed at developing bids that get selected in the market operations and simultaneously maximizing the total profit of DisCos and minimizing power imbalances. Power Exchange market, which is simple yet enables competition, will be considered. This is proposed to be done using MATLAB coding and Genetic Algorithm tool box. Multiple simple bids are modeled. Power imbalance for each of the possible cases is computed. Decision variables (L1 ,L2 ,L3 ) and (C1 ,C2 ,C3 ) are used in order to compute objective functions i.e. Minimization of Power imbalances and maximization of profit, using MATLAB coding and GA tool box.

Vehicle Electrical Power Supply Systems and Their Impact on System Design

1992 ◽  
Vol 206 (3) ◽  
pp. 149-159 ◽  
Author(s):  
G A Williams ◽  
M J Holt
Keyword(s):  
Control Systems ◽  
Power Supply ◽  
Electrical Power ◽  
Critical Systems ◽  
Electrical Power System ◽  
Electrically Actuated ◽  
Electrical Demand ◽  
Electrical Power Consumption ◽  
Systems View ◽  
Supply Systems

The electrical power system is the vital lifeline to most of the control systems on modern automobiles. The following general trends are observed. (a) increased use of electrically actuated systems, (b) increased use of electronic control, (c) increasing requirements for high-integrity power supplies for safety critical systems, (d) increased average electrical power consumption (heating, actuation, control systems), (e) increased electrical demand at engine idle combined with reducing idling speeds, (f) increased interest in higher voltage systems, (g) electrical system problems a major cause of roadside breakdowns. These trends clearly indicate major changes in the requirements of vehicle electrical power supply systems and will demand considerable activity from the vehicle industry in the next decade. An important aim of this paper is to illustrate and promote a systems view of electrical power while considering existing and future problems and opportunities.

scholarly journals Contributions of Petri Nets to the Reliability and Availability of an Electrical Power System in a Big European Hospital - A Case Study

2021 ◽  
Vol 16 ◽  
pp. 21-42
Author(s):  
Constâncio António Pinto ◽  
José Torres Farinha ◽  
Sarbjeet Singh
Keyword(s):  
Power System ◽  
Petri Nets ◽  
Power Supply ◽  
Block Diagram ◽  
Electrical Power ◽  
Dynamic Modelling ◽  
Electric Power System ◽  
Stochastic Petri Nets ◽  
Electrical Power System

The energy power supply infrastructure of a hospital, to function correctly, needs to be well maintained to ensure its reliability and, by consequence, the maximum integrated availability. In this paper, the authors propose the use of Petri Nets to help the improvement of the electric power system reliability, having as a case study a big European Hospital. The purpose of the research is to identify and analyse the potential failures of the system and to suggest solutions to improve the operations and maintenance to maximise the availability and reliability of those assets through possible and objective answers. It was necessary to develop a diagnosis and planning methodology to assess the reliability of several components of the energy power supply system. It is dynamic modelling based on a block diagram of the system and transposed to representation by Petri Nets. The analysis and the simulation of the discrete events of the system, as well as the visualisation of the process functioning and the communications inside, was made. Additionally, they were referred to other approaches, like the Fuzzy Petri Nets and Stochastic Petri Nets, as well as a future balance about its application in a situation like the analysed in this paper

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