scholarly journals Application of Mineral Compounds for a High-Voltage Portable Grounding System: An Experimental Study

Electronics ◽  
2021 ◽  
Vol 10 (16) ◽  
pp. 2043
Author(s):  
Rizwan Ahmad ◽  
Mahmoud Kassas ◽  
Chokri B. Ahmed ◽  
Faisal Khan ◽  
Sikandar Khan ◽  
...  
Keyword(s):  
Power System ◽  
Research Work ◽  
Xrd Analysis ◽  
Electric Power System ◽  
Operating Conditions ◽  
Element Analysis ◽  
Lightning Strikes ◽  
Grounding System ◽  
Ground Resistance ◽  
Study Results

Electrical grounding is an indispensable part of the power system network. The grounding system is mainly affected by grounding resistance and the nature of the soil. High ground resistance produces the phenomenon of soil ionization, surface arching, and back flashover. A conventional grounding system requires the deep digging of electrodes, thus creating maintenance difficulties. This research work focuses on the safe operation of an electric power system from external and internal impulses arising due to lightning strikes or short circuits. The study proposes an application of mineral samples as grounding materials, and bentonite is used as backfilling material in portable grounding systems. A detailed experimental analysis was conducted under controlled conditions to evaluate the performance of selected materials in high-resistance soil. The problem of a deeply driven electrode is addressed by designing the portable grounding system. The study results demonstrate that the proposed portable grounding system could be installed in troubled environments such as forests, deserts, and rocky terrains. To measure the breakdown voltages of the proposed samples, X-ray Diffraction (XRD) analysis and other laboratory tests were conducted. The electric field intensities are extracted through Finite Element Analysis (FEA). The experimental and simulation findings show the expected performance of mineral samples under various operating conditions. The findings of this study can guide the practitioners for safe and efficient operations of portable electrical grounding systems.

Voltage Instability Analysis for Electrical Power System Using Voltage Stabilty Margin and Modal Analysis

2016 ◽  
Vol 3 (3) ◽  
pp. 655 ◽  
Author(s):  
Ahmad Fateh Mohamad Nor ◽  
Marizan Sulaiman ◽  
Aida Fazliana Abdul Kadir ◽  
Rosli Omar
Keyword(s):  
Power System ◽  
Modal Analysis ◽  
Electric Power ◽  
Reactive Power ◽  
Research Work ◽  
Load Flow ◽  
Electric Power System ◽  
Instability Analysis ◽  
Real Power ◽  
Voltage Instability

Voltage instability analysis in electric power system is one of the most important factors in order to maintain the equilibrium of the power system. A power system is said to be unstable if the system is not able to maintain the voltage at all buses in the system remain unchanged after the system is being subjected to a disturbance.The research work presented in this paper is about the analysis of voltage instability of electric power system by using voltage stability margin (VSM), load real power (P) margin, reactive power (Q) margin, reactive power-voltage (QV) and real power-voltage (PV) modal analysis. IEEE 30-bus system has been chosen as the power system. The load flow analysis are simulated by using Power World Simulator software version 16. Both QV and PV modal analysis were done by using MATLAB application software.

Hardware System Design Research on Operation Monitoring System of Hanjiatuo Yangtze River Bridge

2012 ◽  
Vol 479-481 ◽  
pp. 1799-1804
Author(s):  
Peng Yan ◽  
De Shan Shan ◽  
Qiao Li
Keyword(s):  
Power System ◽  
System Design ◽  
Electric Power ◽  
Monitoring System ◽  
Yangtze River ◽  
Design Research ◽  
Electric Power System ◽  
Grounding System ◽  
Main Research ◽  
Hardware System

The main research results of operation monitoring hardware system design of Hanjiatuo Yangtze River Bridge are introduced. Firstly, the content and method of the system are illustrated, and then, overall composition and functions are introduced. The system consists of four subsystems, including sensor system, real time monitoring system, electric power system and grounding system, which are described in detail, and the importance of the last two systems are emphasized.

scholarly journals Implementation of the TN-C-S Scheme in an Ungrounded Low Voltage Electrical Installation in Manaus / AM

2019 ◽  
Vol 7 (11) ◽  
pp. 936-945
Author(s):  
Gabriel Barbosa Soares ◽  
Djanielson De Oliveira Pereira ◽  
Livia Da Silva Oliveira ◽  
David Barbosa de Alencar ◽  
Manoel Henrique Reis Nascimento
Keyword(s):  
Power System ◽  
Electric Power ◽  
Present Article ◽  
Low Voltage ◽  
Electric Power System ◽  
Human Being ◽  
Crucial Importance ◽  
Grounding System ◽  
The City ◽  
Electrical Installation

This paper is intended to formulate a hypothesis for the implementation of a grounding system in a low voltage electrical installation in the city of Manaus. According to ABRACOPEL and PROCOBRE 48% of Brazilian properties do not have a protection conductor and according to NBR 5410 and NBR 5419 the grounding system is of crucial importance, both for the protection of the building, as well as the human being; Inserted in this context, the present article seeks to report a method applied by the author for the implementation of a reliable grounding system that fits the Manaus Electric Power System.

Frequency Response as Tuning of Power System Stabilizer on Rotor Speed Dynamic Stability

2015 ◽  
Vol 793 ◽  
pp. 110-113
Author(s):  
Muhamad Irwanto ◽  
Murina ◽  
N. Gomesh ◽  
N. Gomesh ◽  
M.R. Mamat ◽  
...  
Keyword(s):  
Power System ◽  
Dynamic System ◽  
Frequency Response ◽  
Power System Stability ◽  
Electric Power System ◽  
Operating Conditions ◽  
System Stability ◽  
Background Information ◽  
Rotor Speed ◽  
System Stabilizer

Power system stability is the ability of an electric power system unit, for giving operating conditions beginning to recover operating state of equilibrium after being subjected to a physical interference. Power system stability has been recognized as an important problem for safe operation of system unit. Stability of power system is similar to the stability of any dynamic system, and has basic mathematical. Concepts from the mathematics and theoretical stability control are first revised to provide background information related to stability of dynamic system generally and establish a connection theoretical. This paper presents to improve of dynamic power system stability using frequency response as tuning of system stabilizer. It is started by electrical power systems mathematic modeling in state variable equation then set the expertise function of frequency response as tuning of system stabilizer. The plant controlled by function of frequency response is tuned to left half plane (LHP) as system stabilizer which their input from the rotor speed. When the system occur fault, the rotor speed should be synchronized, for this case one electrical controller is needed to make sure the system is stable.

Optimal Design of MPPT Controllers for Grid Connected Photovoltaic Array System

2016 ◽  
Vol 17 (5) ◽  
pp. 511-517 ◽  
Author(s):  
M. A. Ebrahim ◽  
H. A. AbdelHadi ◽  
H. M. Mahmoud ◽  
E. M. Saied ◽  
M. M. Salama
Keyword(s):  
Optimal Design ◽  
Power System ◽  
Short Circuit ◽  
Dynamic Performance ◽  
Research Work ◽  
Open Circuit ◽  
Electric Power System ◽  
Maximum Power ◽  
System Dynamic ◽  
Photovoltaic Array

Abstract Integrating photovoltaic (PV) plants into electric power system exhibits challenges to power system dynamic performance. These challenges stem primarily from the natural characteristics of PV plants, which differ in some respects from the conventional plants. The most significant challenge is how to extract and regulate the maximum power from the sun. This paper presents the optimal design for the most commonly used Maximum Power Point Tracking (MPPT) techniques based on Proportional Integral tuned by Particle Swarm Optimization (PI-PSO). These suggested techniques are, (1) the incremental conductance, (2) perturb and observe, (3) fractional short circuit current and (4) fractional open circuit voltage techniques. This research work provides a comprehensive comparative study with the energy availability ratio from photovoltaic panels. The simulation results proved that the proposed controllers have an impressive tracking response. The system dynamic performance improved greatly using the proposed controllers.

scholarly journals Introducing LQR-fuzzy for a dynamic multi area LFC-DR model

2019 ◽  
Vol 9 (2) ◽  
pp. 861
Author(s):  
Palakaluri Srividya Devi ◽  
R.Vijaya Santhi
Keyword(s):  
Power System ◽  
Demand Response ◽  
Frequency Control ◽  
Dynamic Performance ◽  
Vital Role ◽  
Electric Power System ◽  
Operating Conditions ◽  
Load Frequency Control ◽  
Control Loop ◽  
Interconnected Power System

It is well known that Load Frequency Control (LFC) model plays a vital role in electric power system design and operation. In the literature, much research works has stated on the advantages and realization of DR (Demand Response), which has proved to be an important part of the future smart grid. In an interconnected power system, if a load   demand changes randomly, both frequency and tie line power varies. LFC-DR model is tuned by standard controllers like PI, PD, PID controllers, as they have constant gains. Hence, they are incapable of acquiring desirable dynamic performance for an extensive variety of operating conditions and various load changes. This paper presents the idea of introducing a DR control loop in the traditional Multi area LFC model (called LFC -DR) using LQR- Fuzzy Logic Control. The effect of DR-CDL i.e. (Demand Response Communication Delay Latency) in the design is also considered and is linearized using Padé approximation. Simulation results shows that the addition of DR control loop with proposed controller guarantees stability of the overall closed-loop LFC-DR system which effectively improves the system dynamic performance and is superior over a classical controller at different operating scenarios.

scholarly journals Performance Evaluation of Thermal-Hydro Hybrid system with Wind Energy Storage system

2019 ◽  
Vol 8 (4) ◽  
pp. 1772-1779
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Wind Energy ◽  
Dynamic Performance ◽  
Storage System ◽  
Research Work ◽  
Energy Storage System ◽  
Operating Conditions ◽  
Storage Unit ◽  
Hydro Power

In the research work, impactness of Renewable Energy source like Wind Energy is reinforced to enhance the dynamic performance of Thermal and Hydro power plant under various operating conditions in which steam act as a major contributor for generation of electricity and rest of the generation through water. This technique is helpful in agricultural as well as islet spaces. The uneven generation of power will cause fluctuation in load followed by large disturbance in frequency of power system. To overcome this nature of fluctuations, wind energy will offer and consume instantly the true and apparent powers. The execution and it’s testing are exhausted in a convenient MATLAB/Simulink condition with the application of step load and a continuing load perturbation of 1% within the system and whose results exposed that involvement of wind energy storage unit in the hybrid Thermal Hydro power system enhance transient performance of each thermal & hydro sides.

A Comprehensive Review on Economic Load Dispatch using Evolutionary Approach

2017 ◽  
Vol 3 (2) ◽  
pp. 7
Author(s):  
Pragya Singh ◽  
Aayushi Priya
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Power System ◽  
Optimal Power Flow ◽  
Operating Cost ◽  
Research Work ◽  
Operating Conditions ◽  
Economic Load Dispatch ◽  
The Past ◽  
Load Demand

Economic Load Dispatch, ELD can be defined as the way of allocating the load level to the generators of the power plant in such a way that the total demand would be supplied in a most economic manner and completely. In a practical power system, the power plants are not located at the same distance from the centre of loads and their fuel costs are different. Also, under normal operating conditions, the generation capacity is more than the total load demand and losses. Thus, there are many options for scheduling generation. In an interconnected power system, the objective is to find the real and reactive power scheduling of each power plant in such a way as to minimize the operating cost. This means that the generator‟s real and reactive powers are allowed to vary within certain limits so as to meet a particular load demand with minimum fuel cost. This is called optimal power flow problem. In this paper, Economic Load Dispatch (ELD) of real power generation is considered. Economic Load Dispatch (ELD) is the scheduling of generators to minimize total operating cost of generator units subjected to equality constraint of power balance within the minimum and maximum operating limits of the generating units. This paper gives a survey of research work covering the concept of economic load dispatch. Economic load dispatch gives the best saving in cost for any power generation plant operation in which the methodology can be applied by various means from conventional to the advanced. In the past years up to 90s, the conventional techniques were used to make this happen but in the past decades AI techniques have fulfilled the requirements with satisfactory results that are being reviewed.

scholarly journals Effect of Voltage Level on Power System Design for Solar Electric Propulsion Missions

Solar Energy ◽  
2003 ◽  
Author(s):  
Thomas W. Kerslake
Keyword(s):  
Power System ◽  
Attitude Control ◽  
Electric Propulsion ◽  
Computational Models ◽  
Electric Power System ◽  
Proton Radiation ◽  
Direct Drive ◽  
Photovoltaic Array ◽  
Solar Electric Propulsion ◽  
Study Results

This paper presents study results quantifying the benefits of higher voltage, electric power system designs for a typical solar electric propulsion spacecraft Earth orbiting mission. A conceptual power system architecture was defined and design points were generated for system voltages of 28-V, 50-V, 120-V and 300-V using state-of-the-art or advanced technologies. A 300-V “direct-drive” architecture was also analyzed to assess the benefits of directly powering the electric thruster from the photovoltaic array without up-conversion. Fortran and spreadsheet computational models were exercised to predict the performance and size power system components to meet spacecraft mission requirements. Pertinent space environments, such as electron and proton radiation, were calculated along the spiral trajectory. In addition, a simplified electron current collection model was developed to estimate photovoltaic array losses for the orbital plasma environment and that created by the thruster plume. The secondary benefits of power system mass savings for spacecraft propulsion and attitude control systems were also quantified. Results indicate that considerable spacecraft wet mass savings were achieved by the 300-V and 300-V direct-drive architectures.

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