Supervisory Information System Application in Power Plant

2013 ◽  
Vol 712-715 ◽  
pp. 2644-2647
Author(s):  
Xiao Ling Luo ◽  
Qi Dui Liang
Keyword(s):  
Information System ◽  
Power Plant ◽  
Network Architecture ◽  
Power Plants ◽  
New Technologies ◽  
Engineering Application ◽  
Development Trend ◽  
Correct Selection ◽  
Design Standards ◽  
Large Power

With the advent of new technologies the development of SIS (supervisory information system) is expanding by leaps and bounds, and SIS function discussion gradually in-depth with a batch of large power plants are put into operation. The establishment of SIS can provide a lot of advantages in terms of control, data viewing and management. Along with the advantages, the correct selection of the proper scheme from wide variety of SIS designs and standards represents an important issue. For the reason the function of the SIS, network architecture and the design are discussed, according to application examples and some related SIS design standards and principles. In addition, the paper puts forwards SIS function development trend and gives a brief description of database according to the cases from power plants. The goal of the paper is to make power system flexible, reliable and minimize management cost. The paper provides some references for research and engineering application of a power plant SIS construction in future.

scholarly journals Analytical Approach to Sampling Estimation of Underwater Tunnels Using Mechanical Profiling Sonars

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1900
Author(s):  
Vitor Augusto Machado Jorge ◽  
Pedro Daniel de Cerqueira Gava ◽  
Juan Ramon Belchior de França Silva ◽  
Thais Mancilha ◽  
Waldir Vieira ◽  
...  
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Hydroelectric Power ◽  
Large Power ◽  
Unmanned Underwater Vehicles ◽  
Power House ◽  
Simulated Environment ◽  
Sonar Sensor ◽  
Power Plant Operation ◽  
Plant Power

Hydroelectric power plants often make use of tunnels to redirect the flow of water to the plant power house. Such tunnels are often flooded and can span considerable distances. Periodical inspections of such tunnels are highly desirable since a tunnel collapse will be catastrophic, disrupting the power plant operation. In many cases, the use of Unmanned Underwater Vehicles (UUVs) equipped with mechanical profiling sonars is a suitable and affordable way to gather data to generate 3D mapping of flooded tunnels. In this paper, we study the resolution of 3D tunnel maps generated by one or more mechanical profiling sonars working in tandem, considering synchronization and occlusion problems. The article derives the analytical equations to estimate the sampling of the underwater tunnels using mechanical profiling sonars (scanning sonars). Experiments in a simulated environment using up to four sensors simultaneously are presented. We also report experimental results obtained by a UUV inside a large power plant tunnel, together with a first map of this environment using a single sonar sensor.

Temperature Measurement Applications in Power Plants

2009 ◽  
Author(s):  
Ravi Jethra
Keyword(s):  
Power Plant ◽  
Temperature Measurement ◽  
Power Plants ◽  
New Technologies ◽  
Measurement Information ◽  
Safety Integrity Level ◽  
Safety And Reliability ◽  
Technical Advances ◽  
Incorrect Measurement ◽  
Major Equipment

Temperature is one of the most widely measured parameters in a power plant. Temperature is monitored and also used for control in some areas. The paper covers some of the basics of Temperature measurement, and leads into some of the technical advances that impart higher a degree of safety and reliability to power plant operation. These advances are based on some of the latest and innovative technologies that are being implemented in process instrumentation. Irrespective of the type of power plant (coal-fired, Oil or gas based), temperature measurement remains high on the list for operational excellence throughout the plant. Implementation of some of the new technologies results in improved Safety and lower installation and maintenance costs. Incorrect measurement information due to temperature effects, non linearity or stability can result in major equipment getting damaged. Ensuring instruments that have minimal downtime from a maintenance standpoint, not just devices that have been evaluated to provide Safety Integrity Level service in Safety Instrumented Systems, is crucial for daily operations in a power plant.

Automating attendance recording of contingent labours at a large construction site

2012 ◽  
Vol 2 (8) ◽  
pp. 1-9
Author(s):  
Saroj Koul
Keyword(s):  
Power Plant ◽  
Radio Frequency Identification ◽  
Power Plants ◽  
Subject Area ◽  
Management Control ◽  
Class Discussion ◽  
Construction Site ◽  
Large Power ◽  
Content Type

Subject area Operations and human resourcing. Study level/applicability This case study is intended for use in graduate, executive level management and doctoral programs. The case study illustrates a combined IT and HR driven participative management control system in a flexible organization structure. It is intended for a class discussion rather than to illustrate either effective or ineffective handling of an administrative situation. Case overview The case describes the situation of managing unskilled workforces (≥14,000 workers) during the construction phase of the 4 × 250MW power plants both for purposes of turnout as well as due compensation, in the event of an accident. The approved labour forces appointed for 45 × 8 h. Man-days after a rigorous fitness test and approvals of the safety officer are allocated housing and other necessary amenities and a commensurate compensation system. Expected learning outcomes These include: illustrating typical organizational responsibility structure at a construction site of a large power plant; illustrating the planning and administrative control mechanism in implementing strategy at a construction site of a large power plant; offering students the opportunity to understand and view a typical operational (project) structure; allowing students to speculate adaptations in the wake of an ever-changing business and company environment; and providing an opportunity to introduce a power scenario in India, Indian labour laws and radio frequency identification technology and to relate this to the case in context. Supplementary materials Teaching notes are available; please consult your librarian for access.

scholarly journals Growth in NOx emissions from power plants in China: bottom-up estimates and satellite observations

2012 ◽  
Vol 12 (10) ◽  
pp. 4429-4447 ◽  
Author(s):  
S. W. Wang ◽  
Q. Zhang ◽  
D. G. Streets ◽  
K. B. He ◽  
R. V. Martin ◽  
...  
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Emission Inventory ◽  
Transport Model ◽  
Nox Emission ◽  
Nox Emissions ◽  
Large Power ◽  
Power Plant Emissions ◽  
Tropospheric No2 ◽  
Plant Emissions

Abstract. Using OMI (Ozone Monitoring Instrument) tropospheric NO2 columns and a nested-grid 3-D global chemical transport model (GEOS-Chem), we investigated the growth in NOx emissions from coal-fired power plants and their contributions to the growth in NO2 columns in 2005–2007 in China. We first developed a unit-based power plant NOx emission inventory for 2005–2007 to support this investigation. The total capacities of coal-fired power generation have increased by 48.8% in 2005–2007, with 92.2% of the total capacity additions coming from generator units with size ≥300 MW. The annual NOx emissions from coal-fired power plants were estimated to be 8.11 Tg NO2 for 2005 and 9.58 Tg NO2 for 2007, respectively. The modeled summer average tropospheric NO2 columns were highly correlated (R2 = 0.79–0.82) with OMI measurements over grids dominated by power plant emissions, with only 7–14% low bias, lending support to the high accuracy of the unit-based power plant NOx emission inventory. The ratios of OMI-derived annual and summer average tropospheric NO2 columns between 2007 and 2005 indicated that most of the grids with significant NO2 increases were related to power plant construction activities. OMI had the capability to trace the changes of NOx emissions from individual large power plants in cases where there is less interference from other NOx sources. Scenario runs from GEOS-Chem model suggested that the new power plants contributed 18.5% and 10% to the annual average NO2 columns in 2007 in Inner Mongolia and North China, respectively. The massive new power plant NOx emissions significantly changed the local NO2 profiles, especially in less polluted areas. A sensitivity study found that changes of NO2 shape factors due to including new power plant emissions increased the summer average OMI tropospheric NO2 columns by 3.8–17.2% for six selected locations, indicating that the updated emission information could help to improve the satellite retrievals.

Stress Analysis of the Canned Nuclear Coolant Pump Based on FSI

2014 ◽  
Author(s):  
Zhang Ji-Ge ◽  
Zhu Yue
Keyword(s):  
Power Plant ◽  
Flow Field ◽  
Nuclear Power ◽  
Power Plants ◽  
Maximum Stress ◽  
Guide Vane ◽  
Von Mises Stress ◽  
Impeller Blade ◽  
Coolant Pump ◽  
Large Power

The reactor coolant pump (RCP) is one of the most important components in nuclear power plants. It operated in high temperature, high-pressure, high speed and radiative environment, so a long-term security and reliable operations is required. Many internal flow analysis of RCPs was carried out, mainly foucs on steady and unsteady flow field at different operating points in RCP. The research about flow passage components, such as the blade of the RCP, is relatively few. When the RCPs operates in the nuclear power plant, the flow field lashed against the impeller of the RCP, results in a network of small cracks is found on the surface of impeller. For example, periodic vibration caused by a break in a guide vane leaded to cracking of two pieces blades of impeller in a large power plant in southwest of China, and this accident caused much economic loss. The computational method of stress due to the hydraulic reason is an important problem of the RCP. In this work, at first the CFD simulation including the case, guide vane, impeller, inlet and outlet at different operation points is studied, and the result of the pressure distribution on impeller blade is loaded on the impeller using fluid-structure interation (FSI) method. The result showed that the maximum von Mises stress appears on the trailing edge close to the impeller hub which has a large change in gradient of stress and which is prone to fatigue failure. The maximum stress on the impeller is mainly in proportion to the operating power. The maximum stress on the impeller have periodical characteristic, which is due to the number of blade of diffuser. All of these equip us with better understand of the fatigue and fracture of RCP, and it make sense to protect the fatigue damage and promote the stability of RCP.

Numerical Simulation on Fouling of the Steam Cooler in a Power Plant

2013 ◽  
Vol 291-294 ◽  
pp. 1969-1974
Author(s):  
Wei Liang Cheng ◽  
An Di ◽  
Li Chao Liu ◽  
Lian Guang Liu
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Heat Exchange ◽  
Power Plant ◽  
Power Plants ◽  
Engineering Application ◽  
Flow State ◽  
Equipment Safety ◽  
Heat Exchange Tube ◽  
Reasonable Model

The fouling in the heat transfer devices of power plants, not only changes the fluid flow state designed, but also counteracts the heat transfer, so the equipment safety and economy are reduced. The adsorption and deposition about fouling is a quite complicated chemical and physical process, and it is difficult to obtain an accurate and reasonable model and its engineering application. Therefore, under some different conditions such as velocity, temperature and concentration of fouling and pipe position, the numerical simulation is obtained in the power plant steam cooler. The temperature inside the pipe is gradually decreased with the velocity. At the same time, the fouling increases in the first half of the exchanger pipe, and easily appears near regions of entrance more and more. The fouling may occurs at the outlet position of the heat exchange tube. Under the same conditions the heat exchange tube near centre line is easier to bring the fouling.

Numerical Investigation of Recirculation of Air-Cooled Condensers for a Large Power Plant

2012 ◽  
Vol 516-517 ◽  
pp. 355-359
Author(s):  
Wan Li Zhao ◽  
Wen Zhou Yan ◽  
Can Bing Xu
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Wind Speed ◽  
Power Plant ◽  
Wind Direction ◽  
Rotational Speed ◽  
Power Plants ◽  
Normal Operation ◽  
Large Power ◽  
Air Cooled Condensers

In order to minimize the recirculation to ensure normal operation of the air-cooled condensers (ACC) system, the recirculation phenomenon and its dependence on ambient winds are numerically simulated by using the computational fluid dynamics code, FLUENT. Under the constant ambient temperature, the effects of different wind speed and wind direction on the recirculation are qualitatively considered by applying the concept of the recirculation rate. The mechanism of occurrence of recirculation are presented and analyzed. It was found that when considering about the existing and normally operating power plants, the recirculation is more sensitive to wind direction and wind speed. Based on the above results, three improved measures increasing the wind-wall height and accelerating the rotational speed of the fans near the edge of the ACC platform and lengthen or widen the platform are developed to effectively reduce the recirculation.

scholarly journals Analysis of the formation of large and small power generation in the Southern Urals

2020 ◽  
Vol 21 (4) ◽  
pp. 302-308
Author(s):  
Irina M. Kirpichnikova
Keyword(s):  
Power Plant ◽  
Energy Production ◽  
Power Plants ◽  
Southern Urals ◽  
The State ◽  
The South ◽  
The Urals ◽  
The Southern Urals ◽  
Large Power ◽  
Hydropower Potential

The description of the state of power engineering in Russia in the pre-revolutionary period, data on the production of electricity per capita are presented. A brief history of the creation of a commission for the development of the State Electrification Plan of Russia (GOELRO plan) and some results of its implementation are provided. The construction of the first large power plant in the South Urals, built according to the GOELRO plan, - Chelyabinsk State District Power Plant, which at that time was of great importance for the development of the region's industry and remains one of the most powerful power plants at the present time, is described. The possibilities of using renewable energy sources, in particular local hydropower resources for energy production, are disclosed. The problems of the Porozhskaya Hydropower Plant - the oldest and unique hydroelectric power plant in the Urals are designated, the characteristics of small hydropower plants in the Southern Urals are given, the prospects for using the hydropower potential of the Chelyabinsk region are revealed. The potential of solar and wind energy is discussed, the characteristics and features of solar power plants in the Urals and wind power plants with a vertical axis of rotation, developed at the South Ural State University, are specified. It is established that biomass as a resource for energy production has good prospects for use, but due to climatic conditions, this direction has not yet been developed. It is shown that small and distributed energy is still an important component in the general energy of the region and the country.

DYNAMIC SIMULATION MODEL OF ELECTRICITY ENERGY DEMAND AND POWER PLANT CAPACITY PLANNING IN MADURA

2016 ◽  
Vol 78 (9) ◽  
Author(s):  
Erma Suryani ◽  
Rully Agus Hendrawan ◽  
Lily Puspa Dewi
Keyword(s):  
Power Plant ◽  
System Dynamics ◽  
Simulation Model ◽  
Capacity Planning ◽  
Energy Demand ◽  
Power Plants ◽  
Small Island ◽  
Large Power ◽  
The Future ◽  
Plant Capacity

As a country that has many islands, Indonesia faces a challenge of inequality electrification ratio. The big islands with dense population such as Java and Sumatra could build large electricity generation plants and distribute electricity with economies scale. On the other hand, it is not economical to build large power plants on small and isolated islands; because of the investment cost per number of population is still very high. Therefore, a strategy to build an independent power plant in small island such as Madura is still a challenge for the government. In addition, to build a power plant in Madura, requires a comprehensive analysis of electricity energy needs in the future and capacity planning to fulfill the demand. Madura has the potential to develop its own power plant. However, Madura still relies on supplies from the island of Java. Therefore, in this research, we use system dynamics as a framework to develop a simulation model to project the future demand and power plant capacity planning based on consideration that system dynamics can conduct the demand projection and capacity planning as well as developing scenarios to fulfill demand in 25 years.

The Output Power of the PV Power Plant Modeling Based on ANFIS

2014 ◽  
Vol 1006-1007 ◽  
pp. 945-954 ◽  
Author(s):  
Ling Liu ◽  
Bao Guo Tang ◽  
Kai Sun
Keyword(s):  
Power Plant ◽  
Output Power ◽  
Power Plants ◽  
Fuzzy Inference ◽  
Engineering Application ◽  
Subtractive Clustering ◽  
Weather Factors ◽  
Inference System ◽  
Practical Engineering ◽  
Application Requirements

To find an effective and reasonable method for calculating precisely the output power of the PV power plant, adaptive neuro-fuzzy inference system (ANFIS) based on Takagi-Sugeno (TS) is proposed. Analysis of the various weather factors that affect the output power of the PV power plant, and select the appropriate input ,MATLAB as a tool ,depend on the different input variable to establish different output power of photovoltaic power plants based on the subtractive clustering the ANFIS model .Results show that all the model has a high accuracy and meet the practical engineering application requirements,by comparing models choose the optimal model.

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