The impact of transmission network on the market strategies

2006 ◽  
Author(s):  
Jun Yan
Keyword(s):  
Transmission Network ◽  
The Impact ◽  
Market Strategies

Challenges and threats to the economic security in the ferrous metallurgy

2020 ◽  
Vol 8 (8) ◽  
pp. 1527-1544
Author(s):  
I.L. Ryabkov ◽  
N.N. Yashalova
Keyword(s):  
Ferrous Metallurgy ◽  
Financial Management ◽  
Ferrous Metal ◽  
Economic Security ◽  
Competitive Advantages ◽  
Corporate Strategies ◽  
Group Methods ◽  
Production Distribution ◽  
The Impact ◽  
Market Strategies

Subject. The article focuses on market strategies of the Russian enterprises operating in the ferrous metallurgy. Objectives. The study is to analyze corporate strategies the leading ferrous metal manufacturers use in the Russian Federation, such as NLMK Group, Severstal, Magnitogorsk Iron & Steel Works, EVRAZ Group. Methods. The study interprets public financial statements and methods of the logic, intuitive and comparative analysis. Results. We analyze market strategies of the Russian metal manufacturers, determine their development priorities and competitive advantages and weaknesses. We describe the impact of various threats and measures metallurgical companies undertake to eliminate them. Conclusions and Relevance. We sorted out possible threats and exposures of the Russian metallurgic companies' economic security and traced the dynamics of their significance for 2015 to 2019. Key threats relate to policies, economy, external and internal market, regulations and laws, production, distribution and financial management, consumption, IT, social welfare and environment.

scholarly journals Indices to Assess the Integration of Renewable Energy Resources on Transmission Systems

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Alexandros I. Nikolaidis ◽  
Francisco M. Gonzalez-Longatt ◽  
C. A. Charalambous
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Renewable Energy Sources ◽  
Ghg Emissions ◽  
Electrical Network ◽  
Transmission Network ◽  
Renewable Energy Resources ◽  
Continuous Increase ◽  
And Control ◽  
The Impact

The continuous increase on the penetration levels of Renewable Energy Sources (RESs) in power systems has led to radical changes on the design, operation, and control of the electrical network. This paper investigates the influence of these changes on the operation of a transmission network by developing a set of indices, spanning from power losses to GHG emissions reduction. These indices are attempting to quantify any impacts therefore providing a tool for assessing the RES penetration in transmission networks, mainly for isolated systems. These individual indices are assigned an analogous weight and are mingled to provide a single multiobjective index that performs a final evaluation. These indices are used to evaluate the impact of the integration of RES into the classic WSCC 3-machine, 9-bus transmission network.

The impact of business strategy on leadership

2015 ◽  
Vol 8 (2) ◽  
pp. 110-126 ◽  
Author(s):  
Thomas G. Marx
Keyword(s):  
Organizational Performance ◽  
Business Strategy ◽  
Online Survey ◽  
Rating Scales ◽  
Low Cost ◽  
Content Type ◽  
Best Value ◽  
The Impact ◽  
Market Strategies ◽  
Practical Implications

Purpose – The purpose of this paper is to test the proposition that business strategy affects leadership functions, skills, traits, and styles, and to assess the implications of these effects for the practice of both leadership and strategic planning. Design/methodology/approach – This is an empirical study based on over 450 responses to an online survey. Continuous rating scales allowed the use of regression analysis to test the impacts of different strategies on leadership. Findings – The results provide strong empirical evidence that Product (Differentiation vs Low Cost strategies), Best Value, and Blue Ocean strategies have significant effects on leadership. Market strategies (Broad vs Niche strategies) have limited impacts. The greater complexity of Product, Best Value, and Blue Ocean strategies underlie these findings. Research limitations/implications – This study explores the effects of strategy on leadership. Future studies need to explore if these effects are moderated by external, competitive conditions, and if strategy mediates the impacts of leadership on organizational performance. Practical implications – The practical implications of these findings are that leaders must adjust their behavior and leadership styles to effectively implement alternative strategies, and planners must assess their organization’s leadership capabilities when formulating strategy. Originality/value – There have been numerous studies of the impacts of external/internal conditions on leadership, but this is one of the first studies of the critical impacts of strategy on leadership.

Combined Frequency Equivalent Model for Power Transmission Network Dynamic Behavior Analysis

2018 ◽  
Vol 19 (2) ◽  
Author(s):  
S. Lakrih ◽  
J. Diouri
Keyword(s):  
Frequency Response ◽  
Behavior Analysis ◽  
Dynamic Behavior ◽  
Power Transmission ◽  
Equivalent Model ◽  
Network Dynamic ◽  
Transmission Network ◽  
Lumped Model ◽  
Distributed Parameters ◽  
The Impact

AbstractThis paper presents a dynamic equivalent model for transmission network dynamic behavior analysis in MATLAB SIMULINK. The electromagnetic frequency response and electromechanical response are combined in the model. The dynamic behavior of distributed parameters line modeled by the EMTP equivalent model is compared with that corresponding to lumped parameter line represented by π model. The aim is to define the frequency band in which the lumped model can accurately represent the distributed parameters model on no load conditions but also when the network is loaded. The proposed equivalent model is explored to investigate the impact of topology on the network dynamics. Besides, the influence of load nature and compensation rate on the driving point frequency response are analyzed analytically and simulated via the proposed model.

A unified optimal power flow modeling for VSC-HVDC converter: a novel methodology for optimal installation based on average loadability index

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Sunilkumar Agrawal ◽  
Prasanta Kundu
Keyword(s):  
Objective Function ◽  
Direct Current ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Pso Algorithm ◽  
Transmission Network ◽  
Content Type ◽  
Hvdc Transmission ◽  
Optimal Power ◽  
The Impact

Purpose This paper aims to propose a novel methodology for optimal voltage source converter (VSC) station installation in hybrid alternating current (AC)/direct current (DC) transmission networks. Design/methodology/approach In this analysis, a unified power flow model has been developed for the optimal power flow (OPF) problem for VSC-based high voltage direct current (VSC-HVDC) transmission network and solved using a particle swarm optimization (PSO) algorithm. The impact of the HVDC converter under abnormal conditions considering N-1 line outage contingency is analyzed against the congestion relief of the overall transmission network. The average loadability index is used as a severity indicator and minimized along with overall transmission line losses by replacing each AC line with an HVDC line independently. Findings The developed unified OPF (UOPF) model converged successfully with (PSO) algorithm. The OPF problem has satisfied the defined operational constraints of the power system, and comparative results are obtained for objective function with different HVDC test configurations represented in the paper. In addition, the impact of VSC converter location is determined on objective function value. Originality/value A novel methodology has been developed for the optimal installation of the converter station for the point-to-point configuration of HVDC transmission. The developed unified OPF model and methodology for selecting the AC bus for converter installation has effectively reduced congestion in transmission lines under single line outage contingency.

scholarly journals nuevas tecnologías como estrategia empresarial

2020 ◽  
Vol 4 (1) ◽  
pp. 8-14
Author(s):  
Ana Gabriela Ramos Morales ◽  
Gabriela Duran Flores ◽  
José Antonio Aguilar Carboney ◽  
Nasario García Álvarez
Keyword(s):  
New Technologies ◽  
Field Research ◽  
Current Situation ◽  
Theoretical Discussion ◽  
Business Growth ◽  
Business Context ◽  
Nuevas Tecnologías ◽  
The Impact ◽  
The City ◽  
Market Strategies

Esta investigación se fundamenta en la discusión teórica de las empresas, estrategias de mercado, así como la investigación de campo del contexto empresarial en la ciudad de Comitán de Domínguez, Chiapas con el fin de identificar su situación actual con respecto al uso de las nuevas tecnologías, así como del impacto y beneficios de estas en su crecimiento empresarial, ya que, de manera natural, los empresarios se resisten al cambio por el temor de enfrentarse a estas nuevas tecnologías dejándolas de lado a pesar de esta constante globalización. AbstractThis research is based on the theoretical discussion of companies, market strategies, as well as field research of the business context in the city of Comitán de Domínguez, Chiapas in order to identify their current situation regarding the use of new technologies, as well as the impact and benefits of these on their business growth, as entrepreneurs naturally resist change for fear of confronting these new technologies, leaving them aside despite this constant globalization.

scholarly journals Impact of GCSC on IDMT directional overcurrent relay in the presence of phase to earth fault

2013 ◽  
Vol 10 (3) ◽  
pp. 381-398 ◽  
Author(s):  
Mohamed Zellagui ◽  
Rabah Benabid ◽  
Abdelaziz Chaghi ◽  
Mohamed Boudour
Keyword(s):  
Transmission Line ◽  
Operation Time ◽  
International Electrotechnical Commission ◽  
Fault Current ◽  
Transmission Network ◽  
Earth Fault ◽  
Fault Resistance ◽  
Overcurrent Relay ◽  
The Impact ◽  
Series Capacitor

This paper presents the impact of GTO Controlled Series Capacitor (GCSC) parameters on the Inverse Definite Minimum Time (IDMT) Directional Overcurrent Relay (DOCR) based on the International Electrotechnical Commission (IEC) standards. The DOCR is used to protect a single 400 kV transmission line of the Algerian transmission network which belongs to the Algerian Company of Electrical and Gas (Group Sonelgaz). The effects of GCSC on transmission line protected parameters as well as fault current and DOCR operation time in the presence of phase to earth fault with fault resistance are investigated considering three scenarios.

scholarly journals THE IMPACT OF THE UNIFIED POWER FLOW CONTROLLER ON MAXIMIZATION OF LOADABILITY OF ELECTRIC POWER GRID

2021 ◽  
Vol 26 (4) ◽  
pp. 14-26
Author(s):  
SUNDAY ADETONA ◽  
RAIFU SALAWU ◽  
FRANK OKAFOR ◽  
JOSEPH ADEYEMI
Keyword(s):  
Power Flow ◽  
Stability Index ◽  
Unified Power Flow Controller ◽  
Transmission Network ◽  
Test Bed ◽  
Control Series ◽  
Bee Colony ◽  
Flow Controller ◽  
The Impact ◽  
Power Flow Controller

The building of additional transmission network to meet the demand of the ever-increasing load is expensive, and time consuming. An alternative to constructing new lines is the incorporation of the Flexible Alternating Current Transmission System (FACTS); in which a Unified Power Flow Controller (UPFC) is a member of the ménage, which can be modelled as a combination of Static Var Compensator and Thyristor Control Series Compensator. This study determines the optimal location of the UPFC by randomly adding loads to the existing transmission network until the Fast Voltage Stability Index of one of the lines is at a critical point. This is the vital line in which UPFC components are added. The sizing of the components of the UPFC is determined using Artificial Bee Colony algorithm. The IEEE 30-bus network is exploited as the test bed. The results obtained reveal that the optimal positioning and sizing of the UPFC for the purpose of maximizing loadability of the grid when load angles are assumed to be negligible are the same as when the load angles are considered. The loadability of the test bed when UPFC is not injected in the grid is 440.376 MW, whereas, it is 837.915 MW when the UPFC is optimally located and sized; and this represents 90.27 %. The sizes of the shunt and series components of the UPFC that assist in realizing this maximization are -0.2780 pu and 0.1000 pu respectively.

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