scholarly journals GROUNDING METHODOLOGY IN A 550 kV AC POWER TRANSMISSION LINE IN THE AMAZON - A CASE STUDY

2021 ◽  
Vol 9 (11) ◽  
pp. 147-159
Author(s):  
Franklin Barbosa Carvalho ◽  
Manoel Henrique Reis Nascimento
Keyword(s):  
Power Distribution ◽  
Power Transmission ◽  
Electrical Power ◽  
Power Lines ◽  
Electrical System ◽  
Grounding System ◽  
Sequence Of Events ◽  
Implementation Costs ◽  
Atmospheric Discharges

Atmospheric discharges are indispensable for the electrical sector due to their responsibility on the shutdown of the power lines, what may trigger a sequence of events that led the interconnected electrical system to collapse. The aim of this case study is to demonstrate the development of a viable methodology in order to reduce the resistance values of the grounding system of the power lines, reducing shutdown occurrences due to returning disruptive discharges, or backflashover, mitigating the damages caused to the electrical system and to society, in order to improve the quality of the electrical power distribution. Considering the factors of implementation costs, technical environmental viability, the encompassment of this solution for other structures lines, and the reduction of the implementation percentage, it was concluded that the most adequate solution to implement a more robust grounding system in the transmission power lines is the solution 03 tested on the tower 585, with a reduction of 66,98%.

scholarly journals The impact of power lines on phytocenoses of the regional reserve “Uporovsky”, Tyumen Region, Russia

2020 ◽  
Vol 164 ◽  
pp. 07030
Author(s):  
Elena Popova
Keyword(s):  
Nature Reserve ◽  
Power Transmission ◽  
Electrical Power ◽  
Power Line ◽  
Power Lines ◽  
Individual Species ◽  
Right Of Way ◽  
Synanthropization Index ◽  
The Right ◽  
The Impact

The article reflects the results of anthropogenic impact on phytocenoses of the territory of the Uporovsky regional nature reserve (Uporovsky district, Tyumen region, Russia). On the territory of the Uporovsky regional nature reserve (Uporovsky district, Tyumen region) there is a 110 kV electrical power transmission line (power line) which has the length of 8 kilometers and the right-of-way width of about 30 meters. This power line is undoubtedly the main source of anthropogenic electromagnetic radiation in this area. The degree of participation of individual species in the herbage was determined by taking into account their relative abundance. When exposed to the power lines in the right-of-way area, flora biodiversity decreases due to the loss of a number of species. The effect of electromagnetic fields causes transformation of the vegetation cover, synanthropization and the subsequent complete destruction of natural vegetation. To determine the degree of anthropogenic load on the studied phytocenoses, the synanthropization index is determined. In the synanthropic fraction of the flora, 30 species belonging to 12 families were identified. The synanthropization index of the studied phytocenoses ranges from 6.6% to 81.2%. The largest number of synanthropic species is observed in the anthropogenic area.

scholarly journals A Hybrid Building Power Distribution System in Consideration of Supply and Demand-Side: A Short Overview and a Case Study

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3082 ◽  
Author(s):  
Yongming Zhang ◽  
Zhe Yan ◽  
Li Li ◽  
Jiawei Yao
Keyword(s):  
Renewable Energy ◽  
Power Distribution ◽  
Distribution System ◽  
Power Transmission ◽  
Supply And Demand ◽  
Demand Side ◽  
Power Distribution System ◽  
Dc Power ◽  
Ac Power

As the quantity of direct current (DC) load and wireless power transmission (WPT) devices are continuously increasing in building, in order to efficiently utilize renewable energy (which outputs DC power) such as photovoltaic (PV), especially for building integrated photovoltaic (BIPV), and regeneration energy from elevators (which also outputs DC power), a novel building power distribution system architecture is explored in consideration of the characteristics of supply and demand-side in this paper. The proposed architecture is a hybrid framework integrated with conventional alternating current (AC) power distribution system, DC power distribution and WPT system. The applied AC and DC hybrid power distribution system has higher conversion efficiency than a single AC power system, which indicates that the former is becoming an important trend of building power distribution. In addition, the results of experimental test in a case study suggest that the proposed architecture can provide fine service for efficient application of renewable energy and regeneration energy in building. The obtained results also can serve as a foundation to promote the development of building power distribution system and related practical application in building.

scholarly journals Pulsed Power Network Based On Decentralized Intelligence For Reliable And Lowloss Electrical Power Distribution

2015 ◽  
Vol 5 (2) ◽  
pp. 97-108 ◽  
Author(s):  
Hisayoshi Sugiyama
Keyword(s):  
Power Distribution ◽  
Power Transmission ◽  
Electrical Power ◽  
Network Capacity ◽  
Pulsed Power ◽  
Power Network ◽  
Low Loss ◽  
Power Sources ◽  
Electrical Pulses ◽  
Time Frames

Abstract Pulsed power network is proposed for reliable and low loss electrical power distribution among various type of power sources and consumers. The proposed scheme is a derivative of power packet network so far investigated that has affinity with dispersion type power sources and has manageability of energy coloring in the process of power distribution. In addition to these advantages, the proposed scheme has system reliability and low loss property because of its intelligent operation performed by individual nodes and direct relaying by power routers. In the proposed scheme, power transmission is decomposed into a series of electrical pulses placed at specified power slots in continuous time frames that are synchronized over the network. The power slots are pre-reserved based on information exchanges among neighboring nodes following inherent algorithm of the proposed scheme. Because of this power slots reservation based on decentralized intelligence, power pulses are directly transmitted from various power sources to consumers with the least power dissipation even though a partial failure occurs in the network. The network operations with the proposed scheme is simulated to confirm the algorithms for the power slots reservation and to evaluate the power network capacity.

scholarly journals Effect Of Value Of Resistance Announcement To Thd In Electrical System Faculty Of Engineering University Udayana Denpasar

2018 ◽  
Vol 2 (1) ◽  
pp. 21
Author(s):  
I. G. N. Janardana ◽  
I W Arta Wijaya ◽  
I. N. Karnata Mataram
Keyword(s):  
Negative Impact ◽  
Electrical Power ◽  
Harmonic Distortion ◽  
Air Conditioner ◽  
Electrical System ◽  
Nonlinear Load ◽  
Grounding System ◽  
Ground Resistance ◽  
Standard Value ◽  
College Of Engineering

AC (Air Conditioner), TV, lamp, LCD and others are categorized as nonlinear load generating harmonics. The high content of harmonics has a negative impact on the quality of electrical power. The result of measurement of THD (Total Harmonic Distortion) current at 9 ohm ground resistance value at phase R = 9,8%, phase S = 11,0%, phase T = 7,5% exceed from standard value IEEE 519 Year 2014 equal to ? 5 , 0%, THD measurement of phase voltage R = 1.4%, phase S = 1.2%, phase T = 1.3%, meet the maximum THDv standard of ? 5%. To overcome this problem, it was observed the effect of the value of ground resistance to THDi and THDv on the electrical system of the College of Engineering Faculty of Denpasar. This method of analysis with ETAP software simulation. With grounding system ? 3 ohm only effect on current THD only with decreasing value of THDi become: phasa R = 4,2%, phase S = 5% and phase T = 4,3%, meaning with grounding system ? 3 ohm THD current fulfill IEEE 519 - 2014 standard <5%. while THD voltage has no effect (THD value of fixed voltage). Several studies have suggested that THD repair can be done by filter installation. However in this study the installation of grounding system ? 3 ohms can reduce the value of current THD.

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