Biodiversity of Hematophagous Diptera (Culicidae and Psychodidae) in a Small Hydroelectric Power Station and Surrounding Area in the State of Minas Gerais, Brazil

2019 ◽  
Vol 57 (1) ◽  
pp. 312-317
Author(s):  
Felipe Dutra Rêgo ◽  
Maria Angélica de Oliveira ◽  
Gustavo Mayr de Lima Carvalho ◽  
José Dilermando Andrade Filho
Keyword(s):  
Rainy Season ◽  
Statistical Significance ◽  
Minas Gerais ◽  
Dry Season ◽  
The State ◽  
Hydropower Plant ◽  
Hydroelectric Power Station ◽  
Sand Flies ◽  
Hydroelectric Power ◽  
Power Station

Abstract Hydroelectric power stations may affect the population dynamics of mosquitoes and sand flies, a group with impact on public health due to the possibility to transmit pathogens to humans. This work characterized and compared the fauna of mosquitoes and sand flies in a hydroelectric power station and peridomicile areas in the State of Minas Gerais, Brazil. Insect collections were performed in August 2015 at dry season and February 2016 in rainy season. Ten HP light traps were set at each of two sites for three consecutive days in each of two seasons (dry and rainy). Furthermore, collections with Shannon traps were made in each sampling area (hydropower plant and peridomicile area) from 4:00 p.m. being shut down at 8:00 p.m. for two consecutive days in each of two seasons (dry and rainy). In total, 1,222 insects from 13 genera and 27 species were collected. The most plentiful species were respectively Culex declarator (Dyar and Knab, 1906) and Pintomyia pessoai (Coutinho & Barretto, 1940). A high number of insects (78.5%) were collected during the rainy period (P < 0.05). About equitability, statistical significance was observed in the peridomicile area (dry season J = 0.75 and rainy season J = 0.82). The highest values of species diversity were observed in the hydropower plant (H = 2.68) and peridomicile area (H = 2.38) both in the rainy season with statistical significance comparing with dry season. Our results demonstrate that the occurrence of vector species in this region increases the potential risk of transmission of pathogens, especially arbovirus and Leishmania Ross, 1903.

scholarly journals PREDIKSI DEBIT ALIRAN MASUK KE TELAGA MENJER MENGGUNAKAN PERSAMAAN NERACA AIR DAN PEMODELAN HEC-HMS

2021 ◽  
Vol 12 (2) ◽  
pp. 119-130
Author(s):  
Hiro Agung Pratama ◽  
Jazaul Ikhsan ◽  
Apip Apip
Keyword(s):  
Water Balance ◽  
Rainy Season ◽  
Catchment Area ◽  
River Flow ◽  
Hydroelectric Power Plant ◽  
Dry Season ◽  
Hydropower Plant ◽  
Hydroelectric Power ◽  
Flow Monitoring ◽  
Inflow Prediction

The Menjer lake is the main source for Hydroelectric Power Plant of the PLTA Garung. Information about the water balance and the potential of existing water resources in the Menjer Catchment Area (DTA) is needed to obtain an efficient operating pattern, the sustainability of the Garung hydropower plant, and good management of the Menjer Lake. The purpose of this study was to estimate the inflow of three main rivers in the Menjer catchment area using HEC-HMS hydrological and water balance approach. Simulated results of the HEC-HMS model shows that the average of total the inflows of three main rivers to the Menjer lake in 2017, 2018 and 2019 during rainy season are 0.954 m3/s, 0.944 m3/s, and 1.017 m3/s, and during dry season are 0.820 m3/s, 0.783 m3/s, and 0.80 m3/s, respectively. While the prediction results of the discharge with the equation of the water balance shows that the average of total river inflows to the Menjer lake during rainy season is 2017 is 1.628 m3/s, in 2018 it is 1.579 m3/s, and in 2019 it is 3.296 m3/s and during dry season is 1.893 m3/s in 2017, 1.176 m3/s tahun 2018, and 1.893 m3/s in 2019. These results indicate that the results of discharge modeling with HEC-HMS are smaller than those predicted by the water balance equation. The study concluded that HEC-HMS could be used to predict daily inflows. However, further calibration and validation need to be carried out by recommending installing a river flow monitoring station at each river outlet.Keywords: water balance HEC-HMS, inflow prediction

scholarly journals An approach to increase the power output of Karnafuli Hydroelectric Power Station: A step to sustainable development in Bangladesh’s energy sector

PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0257645
Author(s):  
Fakir Sharif Hossain ◽  
Tahmidur Rahman ◽  
Abdullah Al Mamun ◽  
Omar Bin Mannan ◽  
M. Altaf-Ul-Amin
Keyword(s):  
Power Output ◽  
Electric Energy ◽  
Clean Energy ◽  
Combined Cycle ◽  
Hydropower Plant ◽  
Hydroelectric Power Station ◽  
Prototype Model ◽  
Hydroelectric Power ◽  
Power Station ◽  
Hydrokinetic Turbine

Renewable energy has become the most prominent source of energy to reduce carbon emissions around the globe. Undoubtedly, hydro energy is very much clean energy among other sources. In Bangladesh, hydro energy is available only in a specific southern area contributing several hundred megawatts to the national grid. This paper devotes to assessing the capacity and practicability of a hydropower plant to boost the power output by implementing the combined cycle hydropower system. The proposed method has been developed by 1) studying the existing plant based on surveyed data, 2) selecting the site for installing the hydrokinetic turbine, 3) designing with consideration of numerous constraints of inter dependability, and 4) creating a prototype model to ensure the practicability. Preliminary results show that a significant amount of additional electric energy can be generated from the plant with higher efficiency.

scholarly journals RESULTS OF MULTI-FACTOR ANALYSIS OF THE CONDITION OF HYDROTECHNICAL CONSTRUCTIONS

2020 ◽  
Vol 10 (1) ◽  
pp. 71-76
Author(s):  
Sergey V. EVDOKIMOV ◽  
Vladimir A. SELIVERSTOV ◽  
Alla A. ORLOVA
Keyword(s):  
Measuring Equipment ◽  
Diagnostic System ◽  
The State ◽  
Automated System ◽  
Hydraulic Structures ◽  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Power Station ◽  
Geological Conditions ◽  
Plant Personnel

Control over the state of the main hydraulic structures of Zhiguli hydroelectric power station is carried out according to observations of the control and measuring equipment installed in the facilities and in their base, as well as the results of systematic inspections and surveys conducted by both the power plant personnel and invited experts. A computer information and diagnostic system for monitoring the condition of facilities is being introduced at the hydroelectric power station. The introduction of this system made it necessary to pay attention to the reliability of the results obtained with the help of instrumentation. The aim of the research is to conduct a multivariate analysis of the state of hydraulic structures Zhigulevskaya HPP on the results of field observations of all devices. It is established that the antifiltration elements of the underground circuit of the HPP building were not effective enough for the specific geological conditions of the base in terms of damping the filtration head. The main pressure drop in the base occurs on the upper tooth of the HPP building, where the maximum filtration gradient is observed, which is very dangerous. In the course of research it was found that several piezometers in the base do not work or their indications cause great doubts, their repair and replacement are required. According to the results of the work, it is concluded that it is necessary to equip the main piezometers of the HPP building with remote water level meters and create an automated system of survey and monitoring of the base state on their basis.

scholarly journals Studi Optimasi Operasional Waduk Koto Panjang Untuk Pembangkit Listrik Tenaga Air

2021 ◽  
Vol 21 (01) ◽  
pp. 31-44
Author(s):  
Diana Hanafi ◽  
Harmiyati
Keyword(s):  
Power Plant ◽  
Water Balance ◽  
Electric Power ◽  
Rainy Season ◽  
Electrical Power ◽  
Hydroelectric Power Plant ◽  
Empirical Method ◽  
Dry Season ◽  
Hydropower Plant ◽  
Hydroelectric Power

[ID] Pada musim kemarau PLTA Koto Panjang pernah mengoperasikan satu unit turbin dan generator sehingga daya yang dihasilkan tidak maksimal. Pada musim yang sama PLTA ini juga pernah mengoperasikan tiga unit turbin dan generator namun hanya menghasilkan daya listrik  35 MW dengan prosentase  50 % yaitu  30,702 % dari daya maksimal pengoperasian tiga unit turbin dan generator. Tujuan dari penelitian ini adalah untuk mengetahui debit andalan PLTA Koto Panjang, optimalisasi yang dilakukan dalam mengoptimasi PLTA Koto Panjang, daya listrik yang dihasilkan dari hasil optimalisasi tersebut dan perbandingannya. Metode empiris Penman digunakan untuk menghitung nilai evaporasi. Debit andalan untuk debit outflow PLTA saat ini dan setelah dioptimalisasi dihitung menggunakan rumus daya listrik dan metode mass curve. Selanjutnya debit outflow PLTA yang telah didapatkan dianalisis di dalam tabel water balance menggunakan metode sequent peak analysis. Hasil yang didapatkan adalah debit andalan PLTA saat ini dan setelah dioptimalisasi yaitu 305,319 m3/det dan 384,465 m3/det dengan prosentase 51,995 % dan 39,235 %. Optimalisasi dilakukan dengan menyesuaikan debit outflow dengan volume air yang ada pada storage saat itu. Daya listrik setelah dioptimalisasi adalah sebesar 13.302,315 kWatt pada musim kering dan 143.551,645 kWatt pada musim hujan. Daya listrik yang dihasilkan PLTA saat ini adalah sebesar 13.302,315 kWatt pada musim kering dan 114.000 kWatt pada musim hujan. Sehingga daya listrik yang dihasilkan PLTA setelah dioptimalisasi mengalami kenaikan dari daya listrik sebelum dioptimalisasi sebesar 29.551,645 kWatt. Karena kenaikan daya melebihi kapasitas generator PLTA saat ini, maka terjadi penambahan 1 generator 30.000 kWatt atau 30 MW. [EN] In the dry season, Koto Panjang Hydroelectric Power Plant has operated one turbine and generator unit so the power produced is not optimal. In the same season, this hydropower plant has also operated three turbines and generators but only produces  35 MW of electricity by percentage  50% which is  30,702 % of the maximum power from operating three turbine and generator units. The purpose of this research is to determine the mainstay discharge of Koto Panjang Hydroelectric Power Plant, optimization will be used for Koto Panjang hydroelectric power plant, power can produce from its optimization and its comparison. The Penman empirical method was used to calculate the evaporation value. The mainstay discharge for hydropower plant outflow discharge at this time and after being optimized is calculated using the electrical power formula and the mass curve method. Furthermore, the hydroelectric power plant outflow discharge has obtained is analyzed in the water balance table using the sequent peak analysis method. The results obtained are the current mainstay discharge of hydroelectric power plant and after optimization, which are 305,319 m3/s and 384,465 m3/s with a percentage of 51,995% and 39,235%. Optimization is done by adjusting the outflow discharge to the volume of water in the storage at that time. The electric power after optimization is 13.302,315 kWatt in the dry season and 143.551,645 kWatt in the rainy season. The current electricity generated by hydroelectric power plant is 13.302,315 kWatt in the dry season and 114.000 kWatt in the rainy season. Therefore the electric power generated by hydroelectric power plant after optimization has increased from the electric power before it is optimized which is 29.551,645 kWatt. Because the increasing of the electric power exceeds the capacity of the current hydroelectric power plant generator, there is an addition 1 generator which is 30.000 kWatt or 30 MW.

scholarly journals MODELING AND METHODOLOGY OF EVALUATION OF ENGINEERING SITUATION IN RIVER BREAKDOWN OF SEREDNYODNIPROVSKA HES

2020 ◽  
Vol 20 ◽  
pp. 96-100
Author(s):  
Yu. Starodub ◽  
V. Bagnyuk
Keyword(s):  
Parameters Estimation ◽  
Hydropower Plant ◽  
Hydroelectric Power Station ◽  
Time Of Arrival ◽  
Hydroelectric Power ◽  
Power Station ◽  
Industrial Enterprises ◽  
Engineering Environment ◽  
Flooded Area ◽  
Prediction And Simulation

The article deals with the process of parameters estimation of the flood zone at the dam break or its destruction, and a scale of possible destruction caused by possible emergencies. Modeling is carried out for the time of approach of the breakthrough wave to a given distance, the height of the breakthrough wave, the time of discharge of the reservoir, the duration of the passage of the wave at a predetermined distance for buildings and structures in the area of shock wave. The example is done for the dam of the Middle Dnieper hydroelectric power station. A technique for modeling a hazardous situation related to the consequences of a breakthrough of the dam at the Middle Dnieper Hydropower Plant has been developed. The prediction and simulation is based on the phenomenological parameters of the Kamyansky reservoir.The simulation of the assessment of the engineering environment for the dam of the Serednyodniprovska hydroelectric power station was carried out using the parameters of flooding of the terrain. Parameters used - the possible maximum depth of flooding, the width of flooding and the rate of water flow at the break of the dam, the time of arrival of the wave front, the crest and tail of the break wave, maximal flow dams, wave heights above water level above domestic flow. As a result, the maximum flooded area was estimated.Based on the use of dam and reservoir characteristics and the use of appropriate formulas for calculating emergency factors and using modeling using ArcGIS, the possible topographic consequences of the breakthrough of the dam in the city Kamianske and the locations of industrial enterprises in its vicinity were obtained. The latter enables rescue services to promptly assess the threat of an emergency in the event of an emergency, to have an idea of the consequences in order to take preemptive measures to prevent the occurrence of an emergency.

DEVELOPMENT AND PRODUCTION of MOBILE HYDROELECTRIC POWER STATION

2021 ◽  
pp. 58-63
Author(s):  
Sergey Ivanovich Derevyagin ◽  
Igor Valeryevich Zagozin
Keyword(s):  
Water Flow Rate ◽  
Hydropower Plant ◽  
Design Parameters ◽  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Power Station ◽  
Hydro Power ◽  
Advantages And Disadvantages ◽  
The Difference ◽  
The Impact

The review of the operation, design, and operation features of the mini-hydro power plant that can provide electricity to a private household or a separate private house. A project has been developed to supply the private sector with electricity from a mobile hydroelectric power station. To accommodate the hydropower plant, it was decided to install the DN500 pipeline. The selected water flow rate and the difference in the location of the channel and the location of the turbine installation allow you to provide the required power.The novelty of the work consists of electrifying a private economy using a mobile hydroelectric power station and establishing the advantages and disadvantages of this solution with an assessment of the impact of all design parameters on the output parameters.The research results can be applied for the manufacture of the mobile hydroelectric power station to their usage in the peasant farms, to save electricity, as well as in the development of experimental-industrial samples of electrical installations for various purposes.

scholarly journals Odonate Communities of the Sucupira Reservoir, Rio Uberabinha, Minas Gerais, Brazil

2019 ◽  
Vol 59 ◽  
pp. e20195922 ◽  
Author(s):  
Marcela Silva Barbosa ◽  
Lucas Rodrigues Borges ◽  
Diogo Silva Diogo ◽  
Henrique Venâncio ◽  
Jean Carlos Santos
Keyword(s):  
Species Composition ◽  
Rainy Season ◽  
New Records ◽  
Minas Gerais ◽  
Freshwater Ecosystems ◽  
Dry Season ◽  
The State ◽  
Anthropogenic Changes ◽  
Minas Gerais State ◽  
Dry And Rainy Seasons

Dragonflies and damselflies (Insecta: Odonata) are widely distributed among freshwater ecosystems of tropical and temperate environments. They are also particularly sensitive to anthropogenic changes. The objective of this study was to inventory the odonate fauna of a section of the Sucupira Reservoir on Rio Uberabinha, Uberlândia, Minas Gerais, Brazil, and to document the species composition of the odonate fauna during the dry and rainy seasons. The study also aimed to describe the distribution of the sampled species in Brazilian states. Sampling took place in August and September of 2017 (dry season) and in February and March of 2018 (rainy season), and recorded 860 individuals of 43 species belonging to 26 genera and six families. Six new records representing the families Gomphidae, Libellulidae and Coenagrionidae were recorded for the state of Minas Gerais. Seventeen species were collected only during the rainy season and eight only during the dry season, while 18 species were found in both seasons. The rainy season had greater abundance, with four times as many individuals as the dry season. This study increases the number of records for Odonata in the Minas Gerais state, and reinforces the trend for greater predominance of this group during the rainy season in this biome.

Research on Local Control System of Hydropower Station Spillway

2014 ◽  
Vol 539 ◽  
pp. 606-610
Author(s):  
Hong Xia Wu ◽  
Jian Ping Jia ◽  
Ming Zhou
Keyword(s):  
Control System ◽  
Local Control ◽  
Hydropower Plant ◽  
Hydropower Station ◽  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Power Station ◽  
Planning Capacity ◽  
And Control ◽  
Production Demand

In this paper, the hydroelectric power station spillway in local control system is studied. The spillway is one of the most important buildings in reservoir hub, it used for drain the flood which is cant accommodate by planning capacity, and it can guarantee the safety of dam body. It is generally not work. In this paper, the spillway of monitor and control system for a hydropower plant as an example, a method of TSX PLC system of application in local control system was emphatically dissertated, it meets the production demand. The field experience shows the design of the system is reasonable, stable and reliable.

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