scholarly journals A comprehensive assessment of comparative effectiveness of projects for power export from East Siberia to China: A methodological approach and results of its application

2018 ◽  
Vol 27 ◽  
pp. 02003 ◽  
Author(s):  
Anatoly Lagerev ◽  
Valentina Khanaeva ◽  
Konstantin Smirnov
Keyword(s):  
Power Plant ◽  
Transmission Line ◽  
Transmission Lines ◽  
Comparative Effectiveness ◽  
Power Plants ◽  
Methodological Approach ◽  
Power Industry ◽  
Comprehensive Assessment ◽  
East Siberia ◽  
Industry Development

The paper is concerned with a methodological approach to the assessment of comparative effectiveness of projects for the construction of export-oriented power plants and transmission lines under uncertainty of the power industry development in the region. The recommendations are given to select the most preferable project for the construction of an export-oriented power plant and transmission line for power export from East Siberia to China.

Development of C.B.T Hot End Yoke Device for Hot Line Insulator Replacement of 230-kV Double Suspension String for Two Bundles with Arcing Horn

2014 ◽  
Vol 931-932 ◽  
pp. 862-866
Author(s):  
Charoenchai Kajonwattanakul ◽  
Wanwisa Skolpap
Keyword(s):  
Power Plant ◽  
Transmission Line ◽  
High Voltage ◽  
Transmission Lines ◽  
Electrical Energy ◽  
Initial Letter ◽  
Corrective Maintenance ◽  
Maintenance Time ◽  
Central Regions ◽  
High Voltage Transmission

Electrical energy generating from power plant is transmitted to electrical substations via high-voltage transmission lines. After a certain period time of use, the transmission line is required for maintenance such as insulator replacement. To avoid power interruption during insulator replacement, a corrective maintenance, hot line maintenance, is performed. This research focused on the hot line insulator replacement of 230 kV Bangsapan-Chumporn and 230 kV Chumporn-Suratthani transmission lines transferring power between southern and central regions of Thailand. The maintenance of 230 kV double suspension string for two bundles with arcing horn required developed C.B.T. hot end yoke tool to enhance stability and availability of electrical energy during hot line insulator replacement. C.B.T was named by the initial letter of the name of Chumporn Bandon and Takuapa transmission lines under authorization of the maintenance section in responsible maintaining service of transmission lines in upper southern provinces. The developed C.B.T hot end yoke device for hot line insulator replacement could save about 2.67 million bahts during 7-hour of maintenance time of EGAT payment.

scholarly journals An Economic Analysis of the Shading Effects of Transmission Lines on Photovoltaic Power Plant Investment Decisions: A Case Study

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 4973
Author(s):  
Henrik Zsiborács ◽  
Nóra Hegedűsné Baranyai ◽  
András Vincze ◽  
Gábor Pintér
Keyword(s):  
Power Plant ◽  
High Voltage ◽  
Transmission Lines ◽  
Power Plants ◽  
Economic Aspects ◽  
Pv System ◽  
Partial Shading ◽  
Transmission Towers ◽  
High Voltage Transmission ◽  
Shading Effects

In today’s photovoltaic (PV) power plants, traditional crystalline PV modules are the prevalent technology, which is highly susceptible to partial shading due to the risk of irreversible damage. Therefore, it is advisable to explore potential construction sites for objects that might cause shading, including high-voltage transmission towers, whose shading effects can be significant due to their height. By means of innovative simulation, using a model, validated with actual data, this study endeavored to deliver novel information related to the problems of shading by high-voltage transmission lines. In the context of Hungary, it examined the risk factors, technical and economic aspects, and possible solutions important for PV projects. It provides new insight, much needed also at the international level, considering the fact that the extent of the shadows cast by conductors on the surface at low Sun elevations is not known at present and neither are the shading characteristics of conductors between two transmission towers, depending on their height, in winter, when the Sun is low. An added practical benefit of the study is that its technical and economic approaches and the software solutions are all based on the practice of PV system design and construction. Related to the investigated issues, this can facilitate the formulation of the technical and economic aspects of suitable PV power plant building strategies in Hungary.

scholarly journals Application of IoT in power transmission line monitoring

2020 ◽  
Vol 2 (SI2) ◽  
pp. First
Author(s):  
Minh Quang Huynh ◽  
Thinh Tran Ngoc Huy ◽  
Hoang Cat Tien Lam
Keyword(s):  
Transmission Line ◽  
Transmission Lines ◽  
Power Plants ◽  
Power Transmission ◽  
Dynamic Monitoring ◽  
Wireless Data ◽  
Online Data ◽  
Wireless Data Transmission ◽  
Solar Power Plants ◽  
Transmission Line Monitoring

Nowaday in Vietnam, the verification and maintenance of 220kV - 500kV transmission lines is mainly done by manual labor. However, this task is quite hard, the workers have many difficulties such as the long moving distance (hundreds of kilometers) through many areas of complex terrain to verify the data and prevent the widespread problems. The efficiency and quality of line check also depends on the enthusiasm and experience of the workers. The demand to develop the power grid is constantly increasing to release full capacity from solar power plants, wind power plants, making the line always operating in overload state. Some problems are caused by the rapid growth of plants violating high voltage transmission line safety distances.Therefore, an online transmission line monitoring system will be a useful tool for improving the line operation and reduce the pressure for workers. In this paper, the application of the wireless data transmission platform and LABVIEW programming software to build a system for online data collection of lines, program settings, applications on mobile devices. Dynamic monitoring of lines over the Internet reduces the workload of workers.

scholarly journals Analysis of efficiency of feed pump control by changing rotation of rotor for power plants of various types

Vestnik IGEU ◽  
2021 ◽  
pp. 5-14
Author(s):  
G.V. Ledukhovsky ◽  
S.D. Gorshenin ◽  
E.V. Zinovyeva ◽  
A.S. Zinovyeva
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
High Efficiency ◽  
Frequency Control ◽  
Methodological Approach ◽  
Initial Pressure ◽  
Feed Pump ◽  
Electricity Cost ◽  
Technological Tools ◽  
Basic Equipment

The type of power plant feed pump drive is selected in the course of a feasibility study. Domestic experience is based on recommendations that have been obtained in the middle of the last century when fuel was relatively cheap. These recommendations are currently being revised. Manufacturers of technological tools of pumps frequency control offer to install fluid couplings, variable frequency electric drives or drive turbines for power plants of various types. At the same time, they declare the high efficiency of such solutions. But the effect is often calculated based on energy savings indicators for the pump drive without considering changes of the operating modes of other equipment of the power plant. An urgent task is a comprehensive assessment of the effectiveness of the measures under consideration. This assessment should consider the objective parameters and modes of facilities operation, as well as interrelation of power electricity cost for own needs and loads of the basic equipment. To determine the technical effect of application of various methods of frequency control of feed pumps, models are used that are developed on the individual basis for each power plant based on the energy characteristics of the equipment. These models include algorithms for heat and electrical balances. Operational characteristics of the feed pumps and performance assessment are calculated according to the known techniques. Based on a unified methodological approach, the authors have developed mathematical models of condensing power supply units and combined heat and power plants for an initial pressure of 12,8 MPa. These models make it possible to determine the effect of frequency control of feed pumps based on data for real time in operation considering the interrelation of power electricity cost for own needs and loads of the basic equipment. Calculation of index of performance of application of various means of frequency control of feed pump performance have been carried out. It is revealed that to assess the efficiency of application of technological tools of frequency control of feed pumps, it is of decisive importance to consider the experience of equipment load, load schedules, the interrelation of power electricity cost for own needs and loads of the basic equipment. No general recommendations to use certain methods of feed pumps control are applicable, when conducting such an assessment.

Development of a Combined Cycle Gas Turbine/Steam Plant for Training Marine and Power Engineers

2007 ◽  
Author(s):  
W. Peter Sarnacki ◽  
Richard Kimball ◽  
Barbara Fleck
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Power Plants ◽  
Power Industry ◽  
Combined Cycle ◽  
Plant Performance ◽  
Engineering Programs ◽  
Hands On ◽  
Steam Plant

The integration of micro turbine engines into the engineering programs offered at Maine Maritime Academy (MMA) has created a dynamic, hands-on approach to learning the theoretical and operational characteristics of a turbojet engine. Maine Maritime Academy is a fully accredited college of Engineering, Science and International Business located on the coast of Maine and has over 850 undergraduate students. The majority of the students are enrolled in one of five majors offered at the college in the Engineering Department. MMA already utilizes gas turbines and steam plants as part of the core engineering training with fully operational turbines and steam plant laboratories. As background, this paper will overview the unique hands-on nature of the engineering programs offered at the institution with a focus of implementation of a micro gas turbine trainer into all engineering majors taught at the college. The training demonstrates the effectiveness of a working gas turbine to translate theory into practical applications and real world conditions found in the operation of a combustion turbine. This paper presents the efforts of developing a combined cycle power plant for training engineers in the operation and performance of such a plant. Combined cycle power plants are common in the power industry due to their high thermal efficiencies. As gas turbines/electric power plants become implemented into marine applications, it is expected that combined cycle plants will follow. Maine Maritime Academy has a focus on training engineers for the marine and stationary power industry. The trainer described in this paper is intended to prepare engineers in the design and operation of this type of plant, as well as serve as a research platform for operational and technical study in plant performance. This work describes efforts to combine these laboratory resources into an operating combined cycle plant. Specifically, we present efforts to integrate a commercially available, 65 kW gas turbine generator system with our existing steam plant. The paper reviews the design and analysis of the system to produce a 78 kW power plant that approaches 35% thermal efficiency. The functional operation of the plant as a trainer is presented as the plant is designed to operate with the same basic functionality and control as a larger commercial plant.

Comparison Between Air Blows and Gas Blows for Cleaning Power Plant Fuel Gas Piping Systems

2011 ◽  
Author(s):  
Hoc Phung ◽  
Gary Jones ◽  
Norman K. Smith
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Power Industry ◽  
Regulatory Agencies ◽  
Fuel Gas ◽  
Loss Of Life ◽  
Electric Company ◽  
Piping Systems ◽  
Fire And Explosion ◽  
Fire And Explosion Hazards

Gas blows have been quite commonly used in the power industry for cleaning fuel gas lines during the plant commissioning process, but this practice is being seriously evaluated and reconsidered by regulatory agencies and public safety organizations due to the fire and explosion hazards, and recent accidents and loss of life. This article merely captures the recent practices at Pacific Gas and Electric Company in the construction of power plants. It is not intended to reflect industry practices.

Flue Gas Desulfurization Wastewater Treatment for Coal-Fired Power Industry

2014 ◽  
Author(s):  
Behrang Pakzadeh ◽  
Jay Wos ◽  
Jay Renew
Keyword(s):  
Power Plant ◽  
Flue Gas ◽  
Environmental Protection Agency ◽  
Water Conservation ◽  
Power Plants ◽  
The United States ◽  
Power Industry ◽  
Flue Gas Desulfurization ◽  
Liquid Discharge ◽  
Plant Operations

The United States Environmental Protection Agency (USEPA)’s announcement that it will revise the effluent limitation guidelines for steam electric power generating units could affect not only how power plants use water, but also how they discharge it. The revised guidelines may lower discharge limits for various contaminants in flue gas desulfurization (FGD) wastewater including mercury, selenium, arsenic, and nitrate/nitrite. Although the specific details of the guidelines are unknown at present, the power industry is evaluating various technologies that may address the new effluent limitation guidelines and promote water conservation. Moreover, the power industry is looking for avenues to increase water usage efficiency, reuse and recycle throughout its plant processes. Final rule approval is expected by the middle of 2014 and new regulations are expected to be implemented between 2017 and 2022 through 5-year NPDES permit cycles. discharge limits for various contaminants including arsenic, mercury, selenium, and nitrate/nitrite [1]. These pollutant limits may be below the levels achievable today with conventional treatment [2]. A growing interest exists in zero liquid discharge (ZLD) facilities and processes in power plant operations. Potentially stringent discharge limits along with water conservation and reuse efforts are two of the major drivers to achieve ZLD. Potential pollutant levels are so low that ZLD may be the best option, if not an outright requirement [1]. Thermal ZLD systems have been the subject of increased interest and discussion lately. They employ evaporating processes such as ponds, evaporators and crystallizers, or spray dryers to produce a reusable water stream and a solid residue (i.e. waste). Evaporators and crystallizers have been employed in the power industry for a number of years. However, typical A growing interest exists in zero liquid discharge (ZLD) facilities and processes in power plant operations. Potentially stringent discharge limits along with water conservation and reuse efforts are two of the major drivers to achieve ZLD. Potential pollutant levels are so low that ZLD may be the best option, if not an outright requirement. A key disadvantage of thermal ZLD is its high capital cost. One way to reduce this cost is to pre-treat the liquid stream using innovative membrane technologies and reverse osmosis (RO).

Equivalent Availability Measurement for Combined-Cycle Power Plants: A New Approach

2001 ◽  
Author(s):  
Dieter Lampert ◽  
Robert F. Steele ◽  
Markus Rosenfelder ◽  
Salvatore DellaVilla
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Power Plants ◽  
Power Industry ◽  
Combined Cycle ◽  
Data Service ◽  
New Approach ◽  
Available Energy ◽  
The Impact ◽  
Reliability And Availability

The Equivalent Availability Factor (EAF) is the most important RAM characteristic in statistics for benchmarks and guarantees for power plants. It represents an energy ratio of the amount available in a period and the theoretical maximum. Representing the impact of scheduled and forced outages of components along with any deratings, a large number of parameters are involved from design, operation to the environment. In 1993, ABB and SPS commenced a cooperation on the fields of data procurement and recording. ABB brought large experience as a power plant supplier, SPS its competence as the leading firm specialized on RAM data service for the power industry worldwide. In May 2000 ALSTOM affiliated the whole power generation division of ABB. ALSTOM and SPS agreed to complete their periodic reports on time based reliability and availability data with EAF data. As the available energy must be calculated from the attributes of its components — in contrast to the effective produced energy that can be measured — the question of accuracy arises. Starting from the definition formula set as standard by ISO 3977/9 (former ANSI/IEEE 762), different methods have been considered to find the most suitable approach. The accuracy of comparisons of plants of different designs and operation modes and the ability to interpret the results is a measure for the suitability of the model chosen. Finally, some recommendations to handle and apply the EAF in the power plant business are given.

scholarly journals Methodological Approach to Incorporate the Involve of Stakeholders in the Geodesign Workflow of Transmission Line Projects

2020 ◽  
Vol 9 (3) ◽  
pp. 178
Author(s):  
Francisco-Javier Moreno-Marimbaldo ◽  
Miguel-Ángel Manso-Callejo
Keyword(s):  
Transmission Line ◽  
High Voltage ◽  
Transmission Lines ◽  
Methodological Approach ◽  
Geospatial Information ◽  
Development Stages ◽  
High Voltage Transmission

Any artificial infrastructure built in a territory causes changes in its environment, especially when it is a question of large or extensive infrastructures such as high-voltage transmission lines (HVTLs). Such changes are perceived unevenly by the different groups affected or involved. However, all of them can obstruct the development of a project of this type of infrastructure. For this reason, it is increasingly necessary to manage the stakeholders in the different phases of the development of an HVTL project. This article presents the methodological proposal designed to add the management of stakeholders’ opinions by integrating it into the geodesign-based workflow for the development of HVTL projects, giving geographic meaning to each of their opinions, allowing their analysis together with the rest of the geospatial information of the project, reusing the “feedback-iteration-consensus” mechanisms, discovering interactions and synergies or incompatibilities, improving the understanding and finally facilitating the consensus of all parties. In this way, it is possible to manage the development of the projects with a single workflow, in which the results are obtained (development stages) and the decisions that are adopted are used both for the technical part and for the management of the project’s stakeholders.

scholarly journals Sustainable Wind Power Plant Modernization

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1461 ◽  
Author(s):  
Robert Kasner ◽  
Weronika Kruszelnicka ◽  
Patrycja Bałdowska-Witos ◽  
Józef Flizikowski ◽  
Andrzej Tomporowski
Keyword(s):  
Power Plant ◽  
Wind Turbine ◽  
Wind Power ◽  
World Literature ◽  
Power Plants ◽  
Methodological Approach ◽  
High Energy ◽  
Process Efficiency ◽  
Wind Power Plant ◽  
Wind Power Plants

The production of energy in wind power plants is regarded as ecologically clean because there being no direct emissions of harmful substances during the conversion of wind energy into electricity. The production and operation of wind power plant components make use of the significant potential of materials such as steel, plastics, concrete, oils, and greases. Energy is also used, which is a source of potential negative environmental impacts. Servicing a wind farm power plant during its operational years, which lasts most often 25 years, followed by its disassembly, involves energy expenditures as well as the recovery of post-construction material potential. There is little research in the world literature on models and methodologies addressing analyses of the environmental and energy aspects of wind turbine modernization, whether in reference to turbines within their respective lifecycles or to those which have already completed them. The paper presents an attempt to solve the problems of wind turbine modernization in terms of balancing energy and material potentials. The aim of sustainable modernization is to overhaul: assemblies, components, and elements of wind power plants to extend selected phases as well as the lifecycle thereof while maintaining a high quality of power and energy; high energy, environmental, and economic efficiency; and low harmfulness to operators, operational functions, the environment, and other technical systems. The aim of the study is to develop a methodology to assess the efficiency of energy and environmental costs incurred during the 25-year lifecycle of a 2 MW wind power plant and of the very same power plant undergoing sustainable modernization to extend its lifecycle to 50 years. The analytical and research procedure conducted is a new model and methodological approach, one which is a valuable source of data for the sustainable lifecycle management of wind power plants in an economy focused on process efficiency and the sustainability of energy and material resources.

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