scholarly journals Case Study on Automatic Power Factor Compensation for Industrial Power

2021 ◽  
Vol 9 (VII) ◽  
pp. 2691-2694
Author(s):  
Prof. Roopa C
Keyword(s):  
Low Power ◽  
Power Factor ◽  
Induction Motors ◽  
Electrical Power ◽  
Distribution Grid ◽  
Small Power ◽  
Passive Power ◽  
Waste Energy ◽  
Electrical Utilities

In an electrical power grid, for an equal amount of usable power transmitted, a load with a coffee power factor draws more current than a load with a small power factor. The higher currents increase the loss of energy in the distribution network and require larger wires and other equipment. Due to the costs of larger equipment and waste energy, electrical utilities will usually charge a much higher cost to industrial or commercial customers where a low power factor is present. Low-power factor linear loads (such as induction motors) are often corrected with a passive condenser or inductor network. The present drawn from the system is distorted by non-linear loads, like rectifiers. In such cases, the correction of the active or passive power factor may also counteract the distortion and lift the factor of the facility. The facility factor correction devices may also be installed at a central substation, opened over a distribution grid, or built into power-consuming equipment.

scholarly journals Windings Design for Single-phase Induction Motors Base on 4-phase Induction Motor (Case study: identical windings design)

2018 ◽  
Vol 215 ◽  
pp. 01023 ◽  
Author(s):  
Zuriman Anthony ◽  
Erhaneli Erhaneli ◽  
Zulkarnaini Zulkarnaini
Keyword(s):  
Induction Motor ◽  
Power Factor ◽  
Single Phase ◽  
Induction Motors ◽  
Three Phase ◽  
Motor Design

A 1-phase induction motor usually has a complicated windings design which compares to polyphase induction motor. In addition, a large capacitor start is required to operate the motor. It is an expensive way to operate the motor if it compare to polyphase induction motor. So, a new innovation method is required to make the motor more simple and cheaper. This research is purposed to study a new winding design for a single-phase capacitor motor. Winding design of the motor was conducted to a simple winding design like a 4-phase induction motor that has four identical windings. The comparator motor that use in this study was a Three-phase induction motor with data 1400 RPM, 1.5 HP, 50Hz, 380/220V, Y/Δ, 2.74/4.7A, 4 poles, that had the same current rating which the proposed method. The result showed that the motor design on this proposed method could be operated at 88.18 % power rating with power factor close to unity.

The Design of Medium Size Voltage Capacitor in order to Improve the Power Factor

2018 ◽  
Vol 879 ◽  
pp. 254-259
Author(s):  
Nattachote Rugthaicharoencheep ◽  
Aroon Charlangsut ◽  
Chatpong Boobpa
Keyword(s):  
Power System ◽  
Low Power ◽  
Power Factor ◽  
Power Loss ◽  
Electrical Power ◽  
Medium Size ◽  
Electrical Power System ◽  
Value Differences ◽  
Ac Motor ◽  
Analyze Data

This article presents theory of The design of medium sized voltage capacitor in order to improve the Power Factor Value to AC motor. In present, the electrical power system has focus on improving the Power Factor significantly because it is the major key to increase or decrease the applicable expenses. The power system that has low power factor will have a lot of loss to system, especially when electrical voltage is on voltage medium. When power factor has been adjusted, the system can take more loads and electrical power loss is decreased. It also decreases voltage in power line and decreases electrical bills at the same time. This article presents the theory to analyze data from motor that needs to adjust a power factor so that it pass electricity authority standard by considering the efficiency of the motor so that the consumers do not have to pay the penalty of the Power Factor Value differences to the Electricity Authority. Furthermore, it can help decrease the bills of unstandardized electrical power which occurred in the system and enable the system to take more loads at the same time.

scholarly journals Investigating the Impact of E-Mobility on the Electrical Power Grid Using a Simplified Grid Modelling Approach

Energies ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 39 ◽  
Author(s):  
Julia Vopava ◽  
Christian Koczwara ◽  
Anna Traupmann ◽  
Thomas Kienberger
Keyword(s):  
Power Grid ◽  
Electrical Power ◽  
Real Life ◽  
Transport Sector ◽  
Additional Stress ◽  
Distribution Grid ◽  
Power Sources ◽  
Grid Model ◽  
The Impact

To achieve climate goals, it is necessary to decarbonise the transport sector, which requires an immediate changeover to alternative power sources (e.g., battery powered vehicles). This change will lead to an increase in the demand for electrical energy, which will cause additional stress on power grids. It is therefore necessary to evaluate energy and power requirements of a future society using e-mobility. Therefore, we present a new approach to investigate the influence of increasing e-mobility on a distribution grid level. This includes the development of a power grid model based on a cellular approach, reducing computation efforts, and allowing time and spatially resolved grid stress analysis based on different load and renewable energy source scenarios. The results show that by using the simplified grid model at least seven times, more scenarios can be calculated in the same time. In addition, we demonstrate the capability of this novel approach by analysing the influence of different penetrations of e-mobility on the grid load using a case study, which is calculated using synthetic charging load profiles based on a real-life mobility data. The results from this case study show an increase on line utilisations with increasing e-mobility and the influence of producers at the same connection point as e-mobility.

Maximizing Electrical Power Saving Using Capacitors Optimal Placement

2020 ◽  
Vol 13 (7) ◽  
pp. 1041-1050
Author(s):  
Ayman Agha ◽  
Hani Attar ◽  
Audih Alfaoury ◽  
Mohammad R. Khosravi
Keyword(s):  
Low Power ◽  
Power Factor ◽  
Large Scale ◽  
Reactive Power ◽  
Electrical Power ◽  
Power Saving ◽  
Optimal Placement ◽  
Energy Losses ◽  
Electricity Bill ◽  
The Cost

Background: Low power factor is regarded as one of the most dedicated issues in large scale inductive power networks, because of the lost energy in term of a reactive power. Accordingly, installing capacitors in the network improves the power factor and hence decreases the reactive power. Methods: This paper presents an approach to maximize the saving in terms of financial costs, energy resources, environmental protection, and also enhance the power system efficiency. Moreover, the proposed technique tends to avoid the penalties imposed over the electricity bill (in the case of the power factor drops below the permissible limit), by applying a proposed method that consists of two stages. The first stage determines the optimal amount of compensating capacitors by using a suggested analytical method. The second stage employs a statistical approach to assess the reduction in energy losses resulting from the capacitors placement in each of the network nodes. Accordingly, the expected beneficiaries from improving the power factor are mainly large inductive networks such as large scale factories and industrial field. A numerical example is explained in useful detail to show the effectiveness and simplicity of the proposed approach and how it works. Results: The proposed technique tends to minimize the energy losses resulted from the reactive power compensation, release the penalties imposed on electricity bills due to the low power factor. The numerical examples show that the saved cost resulted from improving the power factor, and energy loss reduction is around 10.94 % per month from the total electricity bill. Conclusion: The proposed technique to install capacitors has significant benefits and effective power consumption improvement when the cost of the imposed penalty is regarded as high. The tradeoff in this technique is between the cost of the installed capacitors and the saving gained from the compensation.

Main problems of import subsumption in domestic engineering, applicable to small-power electric generator installations

2018 ◽  
Vol 1 (1) ◽  
pp. 46-51 ◽  
Author(s):  
A. V. Shelgunov
Keyword(s):  
Low Power ◽  
Import Substitution ◽  
Power Generator ◽  
Small Power ◽  
Domestic Production ◽  
Power Generators ◽  
Electric Generator ◽  
Generating Sets ◽  
Current State ◽  
Generator Sets

Subject: the subject of the study are low-power generator sets with a power of up to 30 kW.Materials and methods: in this paper, the main domestic legislative documents regulating the requirements for products. An assessment is made of the current state of Russian engine building.Results: the detailed analysis of the modern domestic market of power generating units with a capacity of up to 30 kW is made, the main problems in the field of domestic production of  electric power generators in the range up to 30 kW are revealed, and the prospects for import substitution of gasoline and diesel engines are noted.Conclusions: almost complete absence of the market of domestic low-power generating sets is established, insufficient measures taken to support domestic producers are noted, measures are  proposed for the development of domestic production of power units in the range of up to 30 kW.

Energy Consumption Pattern of Residential Buildings: Case Study of Residential Area in Batu Pahat, Johor

2020 ◽  
Vol 12 (9) ◽  
Author(s):  
Junaidah Jailani ◽  
◽  
Norsyalifa Mohamad ◽  
Muhammad Amirul Omar ◽  
Hauashdh Ali ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Residential Buildings ◽  
Residential Area ◽  
Consumption Pattern ◽  
Air Conditioners ◽  
Residential Sector ◽  
Waste Energy ◽  
Main Factor ◽  
Energy Consumption Pattern

According to the National Energy Balance report released by the Energy Commission of Malaysia in 2016, the residential sector uses 21.6% of the total energy in Malaysia. Residents waste energy through inefficient energy consumption and a lack of awareness. Building occupants are considered the main factor that influences energy consumption in buildings, and to change energy consumption on an overall scale, it is crucial to change individual behaviour. Therefore, this study focused on analysing the energy consumption pattern and the behaviour of consumers towards energy consumption in their homes in the residential area of Batu Pahat, Johor. A self-administrated questionnaire approach was employed in this study. The findings of this study showed that the excessive use of air conditioners was a significant factor in the increasing electricity bills of homeowners as well as the inefficient use of electrical appliances. Also, this study determined the effect of awareness on consumer behaviour. This study recommends ways to help minimise energy consumption in the residential area.

scholarly journals A Framework for Assessing Commitment Indicators in Sustainable Development Decisions

2021 ◽  
Vol 13 (9) ◽  
pp. 5234
Author(s):  
Mustafa S. Al-Tekreeti ◽  
Salwa M. Beheiry ◽  
Vian Ahmed
Keyword(s):  
Sustainable Development ◽  
Performance Indicators ◽  
Energy Use ◽  
Capital Projects ◽  
The Sustainable Development ◽  
Corporate Leaders ◽  
Corporate Decisions ◽  
Waste Energy ◽  
Infrastructure Project

Numerous decision support systems have been developed to address the decision-making process in organizations. However, there are no developed mechanisms to track commitment down the line to the decisions made by corporate leaders. This paper is a portion of a study that establishes a framework for a comprehensive metric system to assess commitment to Sustainable Development (SD) decisions down the line in capital projects, and sets the groundwork for further development of performance indicators for SD outcomes. This ultimately leads to investigating the relationship between commitment to corporate decisions and better project performance in SD parameters. Hence, this study explores the literature to extract relevant parameters that reflect the degree of the project participants’ commitment to SD decisions and to develop commitment indicators. The study created then validated an index to track this commitment along the project stages: the Sustainable Development Commitment Tracking Tool (SDCTT). The SDCTT was tested on an infrastructure project case study. In this paper, techniques relevant to the first stage of projects (planning and definition) are presented. The SDCTT is the groundwork for the future development of performance indicators for SD outcomes, and within the postulated model should ultimately contribute towards reducing project waste, energy use, and carbon emissions.

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