Static Planning for Micro-Grid Power Source Based on Multi-Energy Source Hybrid Power Supply with the Minimum Operating Cost

2013 ◽  
Vol 409-410 ◽  
pp. 673-679
Author(s):  
Zhong Jing Liu ◽  
Xiao Jiang Huo ◽  
Hao Cheng ◽  
Yu Na Li
Keyword(s):  
Energy Source ◽  
Power Supply ◽  
Operating Cost ◽  
Operating Costs ◽  
Maintenance Cost ◽  
Hybrid Power ◽  
Micro Grid ◽  
Static Planning ◽  
Minimum Operating

Because the micro-grid investors, beneficiary, management mode, etc. are fairly different from those of traditional power grid. From the perspective of micro grid users or operators, this paper analyzes the operating and maintenance cost of power pack of multi-energy source hybrid power supply, designs the micro-grid power pack model of multi-energy source hybrid power supply by use of static planning measure, aiming at the minimization of operating cost, and analyzes the power pack configuration under the condition of different minimum operating costs by case study and how to achieve the operating and maintenance profits.

Minimum Operating Cost Planning for Micro-Grid Power Source Based on Multi-Energy Source Hybrid Power Supply

2013 ◽  
Vol 804 ◽  
pp. 391-395
Author(s):  
Hao Cheng ◽  
Zhong Jing Liu
Keyword(s):  
Energy Source ◽  
Power Supply ◽  
Operating Cost ◽  
Maintenance Cost ◽  
Hybrid Power ◽  
Cost Planning ◽  
Micro Grid ◽  
Static Planning ◽  
Minimum Operating

The reasonable deployment of micro-grid power supply determines the application domain and flexibility of micro grid. Because the micro-grid investors, beneficiary, management mode, etc. are fairly different from those of traditional power grid. From the perspective of micro grid users or operators, this paper analyzes the operating and maintenance cost of power pack of multi-energy source hybrid power supply, designs the micro-grid power pack model of multi-energy source hybrid power supply by use of static planning measure, aiming at the minimization of operating cost, and analyzes the power pack configuration under the condition of different minimum operating costs by case study and how to achieve the operating and maintenance profits and reliability.

scholarly journals Optimal placement design for picking and packing in distribution centers

2021 ◽  
Vol 13 (4) ◽  
pp. 168781402110106
Author(s):  
John Rios ◽  
Rodrigo Linfati ◽  
Daniel Morillo-Torres ◽  
Iván Derpich ◽  
Gustavo Gatica
Keyword(s):  
Optimal Allocation ◽  
Programming Model ◽  
Operating Cost ◽  
Nonlinear Integer Programming ◽  
Operating Costs ◽  
Optimal Placement ◽  
Distribution Centers ◽  
Suitable Space ◽  
Efficient Distribution

An efficient distribution center (DC) is one that receives, stores, picks and packs products into new logistics units and then dispatches them to points of sale at the minimal operating cost. The picking and packing processes represent the highest operating cost of a DC, and both require a suitable space for their operation. An effective coordination between these zones prevents bottlenecks and has a direct impact on the DC’s operational results. In the existing literature, there are no studies that optimize the distribution of the picking and packing areas simultaneously while also reducing operating costs. This article proposes an integer nonlinear integer programming model that minimizes order preparation costs. It does so by predicting customer demand based on historical data and defining the ideal area for picking and packing activities. The model is validated through a real case study of seven clients and fifteen products. It achieves a [Formula: see text] reduction in operating costs when the optimal allocation of the picking and packing areas is made.

Hibridno napajanje telekomunikacione i merne opreme daljinskih mernih stanica u sistemima zaštite od poplava

2020 ◽  
Vol 22 (1-2) ◽  
pp. 102-111
Author(s):  
Željko Despotović ◽  
◽  
Marko Tajdić ◽  
Jovan Kon
Keyword(s):  
Energy Source ◽  
Power Supply ◽  
Measuring Equipment ◽  
Primary Energy ◽  
Street Lighting ◽  
Measuring Station ◽  
Hybrid Power ◽  
Telecommunication Equipment ◽  
Battery Bank ◽  
Flood Protection System

The paper will present the implementation of a hybrid power supply for telecommunication and corresponding measuring equipment of remote measuring stations, which are an integral part of the flood protection system. Solar power is the primary energy source during the day, while in night conditions it is actually used as a distribution network (which also supplies street lighting). The power system is implemented with two controlled MPPT chargers (mains and solar), 12V / 110Ah battery bank and associated monitoring system. The paper will present key experimental results obtained during the release of a concrete realized measuring station and associated telecommunication equipment, on the Ub River, Ub Municipality.

Micro-Grid Energy Optimization Include Battery-Swapping-Station

2014 ◽  
Vol 672-674 ◽  
pp. 1358-1363
Author(s):  
Liu Shu ◽  
Fang Liu ◽  
Xiu Yang
Keyword(s):  
Genetic Algorithm ◽  
Renewable Energy ◽  
Electric Vehicle ◽  
Negative Impact ◽  
Operating Cost ◽  
Energy Optimization ◽  
Optimal Operation ◽  
Operation Efficiency ◽  
Micro Grid ◽  
Minimum Operating

Accessing electric vehicle (EV) into micro-grid (MG) by battery-swapping station (BSS) will not only reduce the negative impact brought by EVs which are directly accessed into MG, but also improve the capacity of MG to absorb more renewable energy. That BSS is regarded as schedulable load is guided to avoid peak and fill valley according to TOU. As a result, the gap between peak and valley of MG is decreased and the operation efficiency of MG is elevated. A specific MG is taken as the studying object and the minimum operating cost is regarded as the optimizing goal, then the genetic algorithm is used to optimize the outputting of each micro-source and the charging power of BSS so that the optimal operation is realized.

scholarly journals Decision Making and Truck Operating Costs on Haulage Business in Lagos, Nigeria

2020 ◽  
pp. 28-37
Author(s):  
Christopher Adesola Wojuade ◽  
Jubril Oladosu
Keyword(s):  
Operating Cost ◽  
Cost Effective ◽  
Business Owners ◽  
Operating Costs ◽  
Maintenance Cost ◽  
Financial Investment ◽  
The Subject ◽  
Fleet Operations ◽  
Regular Training ◽  
Structured Questionnaire

Aim: To evaluates how managers take decisions on variable components of freight operation and its effects on truck operating costs in haulage business in Lagos, Nigeria. Study Design: The structure of this paper is a descriptive design. It identified a gap in knowledge and employed a structured questionnaire to obtain useful information that gives a clearer understanding of the subject in a new environment. The data collected was analysed using descriptive statistics. Place and Duration of Study: Haulage companies operating in Lagos, Nigeria between June and August 2019. Methodology: The population study is 2154 staff drawn from the eight purposively selected registered haulage companies in Lagos, Nigeria. A structured questionnaire was randomly administered on 337 personnel involved in freight operations. The questionnaire survey was conducted to obtain information on company’s expenses and policy decisions on truck operating components. Result: The decision to use new truck reduces fuel consumption and maintenance cost of haulage business. Furthermore, remunerating drivers in salary is cost effective, regular training of drivers improves their performance while high empty return trips leads to revenue loss. Business owners take decisions on huge financial investment while managers handled those that are directly related to daily fleet operations. Conclusion: The study concluded that decisions on components of freight operation increases truck operating cost of the haulage companies in the study area. The study therefore recommends policy actions that will enhance productivity of haulage companies through effective decisions.

Organizational Performance and IT Investment Intensity of South African Companies

2008 ◽  
pp. 3129-3136
Author(s):  
Johan Nel
Keyword(s):  
Information Technology ◽  
Organizational Performance ◽  
South African ◽  
Operating Cost ◽  
Case Study Research ◽  
Operating Costs ◽  
Company Performance ◽  
It Investment ◽  
Study Research

This chapter considers if a link exists between company performance and information technology (IT) investment intensity in selected South African companies. The study, which covered the period 1989–1991, was based on the hypotheses viz: that in top performing companies (1) IT costs as proportions of operating costs were higher; (2) IT costs as a proportion of turnover was lower, than in weak performing companies; and (3) that a positive correlation exists between the computerization index and operating cost efficiency ratio. Evidence is presented that company performance was linked to the level of IT investment intensity in a sample of organizations in the RSA. Findings of later case study research supporting this are also presented.

scholarly journals Aircraft Scheduled Airframe Maintenance and Downtime Integrated Cost Model

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Remzi Saltoğlu ◽  
Nazmia Humaira ◽  
Gökhan İnalhan
Keyword(s):  
Cost Model ◽  
Operating Cost ◽  
Aviation Industry ◽  
Maintenance Cost ◽  
Commercial Aviation ◽  
Overhead Cost ◽  
Analysis Technique ◽  
Integrated Cost ◽  
Maintenance Process ◽  
Minimum Operating

Aviation industry has grown rapidly since the first scheduled commercial aviation started one hundred years ago. There is a fast growth in the number of passengers, routes, and frequencies, with high revenues and low margins, which make this industry one of the most challenging businesses in the world. Every operator aims to undertake the minimum operating cost and gain profit as much as possible. One of the significant elements of operator’s operating cost is the maintenance cost. During maintenance scheduling, operator calculates the maintenance cost that it needs to budget. Previous works show that this calculation includes only costs that are directly related to the maintenance process such as cost of labor, material, and equipment. In some cases, overhead cost is also included. Some of previous works also discuss the existence of another cost throughout aircraft downtime, which is defined as cost of revenue loss. Nevertheless, there is not any standard model that shows how to define and calculate downtime cost. For that reason, the purpose of this paper is to introduce a new model and analysis technique that can be used to calculate aircraft downtime cost due to maintenance.

scholarly journals Simulation of the operation of a natural gas transport system based on a criterion of minimum operating cost

DYNA ◽  
2019 ◽  
Vol 86 (211) ◽  
pp. 308-316
Author(s):  
Jaime Fernando Andrade Mahecha ◽  
Grigory Ibrahim Massy Sánchez
Keyword(s):  
Natural Gas ◽  
Gas Transport ◽  
Operating Cost ◽  
Transport Network ◽  
Operating Costs ◽  
System Of Equations ◽  
Linear Programming Methods ◽  
Natural Gas Transport ◽  
The Cost ◽  
Minimum Operating

In this article, a simulation model of a natural gas transport network based on the minimization of its operating costs was developed. For this, a system of equations that determine these costs and the conditions that characterize it are established, to later be transformed into a system that can easily be solved by common linear programming methods. A system of equations and matrices resulting from a transport network of few elements is presented as an example. The model is applied in the simulation of the future operation of the Colombian natural gas transport network to project the cost of its operation, section flows, its associated tariffs, and shortage level. Finally, the conclusions derive possible use applications of this model for the analysis of natural gas transport networks and other energy systems.

scholarly journals Selection of Best Power Supply Source for Telecom Towers in Remote Areas

2020 ◽  
Vol 5 (5) ◽  
pp. 913-925
Author(s):  
Shwetank Avikal ◽  
Rahul Singhal ◽  
Rajat Sajwan ◽  
Rahul Kumar Tiwari ◽  
Rohit Singh
Keyword(s):  
Power Supply ◽  
Fuzzy Ahp ◽  
Operating Cost ◽  
Energy System ◽  
Maintenance Cost ◽  
Diesel Generator ◽  
Supply Source ◽  
Remote Areas ◽  
Power Supply Source ◽  
Diesel Generators

Installation of telecom towers in remote areas especially in developing countries like India is a major problem for telecom industries because of the unavailability of reliable power supply. The grid supply is not regular in these countries and up to some extent, they are dependent on diesel generators for power supply. But these diesel generators have some major issues such as high operating cost due to high cost of fuel, transportation cost of fuel, high maintenance cost, and these diesel generators also emits pollution to the environment. In presented work, an approach has been proposed for telecom companies for providing power supply to their telecom towers. An economic cost analysis has been proposed by considering various criteria such as cost, air & noise pollution and reliability, etc. Some power supply alternatives including unconventional and hybrid of conventional and unconventional alternatives have been compared to find the solution such as diesel-powered telecom towers, solar powered telecom towers, and their hybrids. The main objective of this work is to provide a reliable, cost effective and environment friendly Remote Area Power Supply (RAPS) system for a particular site in India (Uttar Pradesh). A number of criteria are involved in discussed problem in order to select an effective power supply source. Therefore, the problem has been considered as a Multi Criteria Decision Making (MCDM) problem. To select the best alternative, a Fuzzy AHP and TOPSIS based approach has been proposed. Fuzzy AHP (Analytic Hierarchy process) has been used for calculating the weightage of criteria and the concept of Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) has been applied for ranking the alternatives. The results give assured reliability and sustainability for remote areas using a solar photovoltaic (PV)-diesel generator hybrid energy system.

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