2014 International Conference on the Eleventh industrial and Commercial Use of Energy最新文献

Reconfiguring mining compressed air networks for cost savings 重新配置采矿压缩空气网络以节省成本

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904165

J. I. Bredenkamp, L. F. van der Zee, J. V. van Rensburg

{"title":"Reconfiguring mining compressed air networks for cost savings","authors":"J. I. Bredenkamp, L. F. van der Zee, J. V. van Rensburg","doi":"10.1109/ICUE.2014.6904165","DOIUrl":"https://doi.org/10.1109/ICUE.2014.6904165","url":null,"abstract":"The ever-growing human population, limited energy resources and the effect of greenhouse gas emissions have become major global concerns for the energy sector. This includes the electricity generation sector. This dilemma has caused electricity providers to revise their generation methods and created a major need for consumers to utilise electricity more efficiently. Demand Side Management (DSM) is one initiative developed for consumers to efficiently utilise electricity. Due to their high electricity consumption and availability of technical skills, mines are ideal targets for the implementation of DSM strategies. Therefore, the focus of this study was to investigate the possible implementation of DSM strategies on the compressed air networks of South African mines. The compressed air networks at South African mines are relatively old and inadequately maintained. This causes inefficient distribution and use of compressed air. This study will therefore focus on reconfiguring a mining compressed air network for electricity cost savings. Reconfiguring this network would entail interconnecting two shafts with a pipeline in order to distribute compressed air from one shaft to another. This proposed reconfiguring initiative was approved and implemented on a South African mine's compressed air network. The results concluded that electricity cost savings can be achieved by reconfiguring mining compressed air networks.","PeriodicalId":149169,"journal":{"name":"2014 International Conference on the Eleventh industrial and Commercial Use of Energy","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115543519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20

Cost savings on mine dewatering pumps by reducing preparation- and comeback loads 通过减少准备和返回负荷来节省矿井脱水泵的成本

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904166

C. Cilliers, L. F. van der Zee, M. Kleingeld

{"title":"Cost savings on mine dewatering pumps by reducing preparation- and comeback loads","authors":"C. Cilliers, L. F. van der Zee, M. Kleingeld","doi":"10.1109/ICUE.2014.6904166","DOIUrl":"https://doi.org/10.1109/ICUE.2014.6904166","url":null,"abstract":"With the introduction of a time-of-use (TOU) tariff structure by Eskom, the implementation of projects that shift load from peak TOU times to times of the day when electrical energy is less expensive has increased. To enable load shifting on mine dewatering pumps, preparation before and recovery after peak TOU is needed for effective results. This induces a preparation- and comeback load in the standard TOU. With an annual increase in TOU tariffs and the rate of increase of standard TOU being greater than that of the peak TOU, a reduction in electrical energy consumption before and after peak TOU is needed. To enable this, a step-by-step control technique was developed to promote the shifting of load from standard-to off-peak TOU, while still realising a full load shift from peak TOU. This technique entails dynamic control ranges of underground dam levels as opposed to the conventional constant control range method. Control range upper and lower bounds were optimised through the formulation and application of equations taking into account various system parameters. Two case studies were used to test the developed technique. Results indicated significant additional financial savings when compared to conventional control methods. Additional savings of R 1,096,056.65 and R 579,394.27 per annum were respectively achieved for both case studies.","PeriodicalId":149169,"journal":{"name":"2014 International Conference on the Eleventh industrial and Commercial Use of Energy","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122966483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 25

Increasing DSM savings on a process plant by selecting the correct tariff structure 通过选择正确的电价结构，增加流程工厂的DSM节约

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904177

W. Hamer, P. Kgwetiane, J. Vosloo

{"title":"Increasing DSM savings on a process plant by selecting the correct tariff structure","authors":"W. Hamer, P. Kgwetiane, J. Vosloo","doi":"10.1109/ICUE.2014.6904177","DOIUrl":"https://doi.org/10.1109/ICUE.2014.6904177","url":null,"abstract":"South African industries are under increasing budgetary pressure with the current rise of electricity costs above inflation. In addition to this, industries that are supplied through municipalities have to cope with additional service costs of up to 20%. These consumers are therefore compelled to find new ways of saving electricity. Further, in order to decrease the country's peak electrical load profile, Eskom has implemented different tariff structures. These are designed for various different electricity consumption conditions. Customers therefore need to integrate and simulate their power consumption with their production forecasts in order to decide on the best tariff structure and operation of the plant. Different tariff structures have different advantages and disadvantages. Therefore, a clear understanding of these tariffs is necessary before a tariff structure is chosen. As part of this study, a case study was done on a processing plant. This study analysed the Demand Side Management (DSM) strategy as well as the selection of the best tariff structure for maximum savings. The optimum simulated operational plan together with tariff structure changes were implemented successfully. The case study proved that cost savings were also achieved despite a variation in the production.","PeriodicalId":149169,"journal":{"name":"2014 International Conference on the Eleventh industrial and Commercial Use of Energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130662793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Improving energy consumption of an induction motor by design of a power factor correction system and estimation of it's saving on a large scale 通过功率因数校正系统的设计和大规模节能估算，降低了异步电动机的能耗

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904192

Nima Zabihi, R. Gouws

{"title":"Improving energy consumption of an induction motor by design of a power factor correction system and estimation of it's saving on a large scale","authors":"Nima Zabihi, R. Gouws","doi":"10.1109/ICUE.2014.6904192","DOIUrl":"https://doi.org/10.1109/ICUE.2014.6904192","url":null,"abstract":"Power factor correction (PFC) is common in commercial and industrial applications. A need to extend its application increased with the dwindling natural resources used for power generation and also exceeding energy demand, hence more efficient motor systems and power usage are required at the forefront of utility's demand side management system. The aim is to design and build an active PFC using a boost DC/DC converter and implement it on a single phase induction motor for residential and small industrial applications. However it can be developed to a three phase system for bigger industrial applications. The basic architecture includes a power supply, a rectifier, DC/DC boost converter (for the system with PFC), an inverter, control circuitry, and a single split phase induction motor. The energy usage of the motor without PFC is recorded and compared with energy of a motor with PFC. The cost analysis of the two energy usage is compared and the objective is to realise some savings. This paper discusses system design, influence of the PFC on the system's power consumption and power factor, comparing the results between two systems, and cost evaluation.","PeriodicalId":149169,"journal":{"name":"2014 International Conference on the Eleventh industrial and Commercial Use of Energy","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134303621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Modelling of middle income residential lighting load profile using a universal estimator 中等收入住宅照明负荷分布的通用估计模型

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904171

O. Popoola, J. Munda, A. Mpanda, O. Dintchev, P. Mlonzi

引用次数: 1

Simplified performance monitoring of energy systems 简化能源系统的性能监测

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904180

P. Goosen, I. M. Prinsloo, R. Pelzer

{"title":"Simplified performance monitoring of energy systems","authors":"P. Goosen, I. M. Prinsloo, R. Pelzer","doi":"10.1109/ICUE.2014.6904180","DOIUrl":"https://doi.org/10.1109/ICUE.2014.6904180","url":null,"abstract":"Large energy consumers face mounting pressure due to recent energy cost increases, as well as regulatory requirements and limitations. Therefore, energy performance monitoring is an essential component of many modern businesses. Consumers must manage energy resources sparingly. However, managing the large datasets associated with large-scale operations can often become overwhelming. This creates the need for a simplified approach to performance monitoring. Energy monitoring and reporting systems have been created to address the requirements of specific applications such as DSM performance tracking. However, a more generic approach is required in order to include a comprehensive collection of energy data for additional applications. In this paper a generic data management solution is discussed. The system gathers a wide range of energy data suitable to address the needs of a variety of applications. Reports are compiled according to organisational levels. This ensures timely delivery of relevant reports to personnel at different organisational levels. Various features of the proposed improved performance monitoring system are described. Additionally, a case study on a DSM project demonstrates the implementation and use of the system. It was possible to improve the performance of the project after identifying and modifying its inefficient control philosophy.","PeriodicalId":149169,"journal":{"name":"2014 International Conference on the Eleventh industrial and Commercial Use of Energy","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121435281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Implementing DSM interventions on water reticulation systems of marginal deep level mines 边际深井水网系统实施DSM干预

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904176

A. van Niekerk, D. Uys, J. V. van Rensburg

引用次数: 15

Modernising underground compressed air DSM projects to reduce operating costs 现代化地下压缩空气DSM项目，降低运营成本

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904169

C. Kriel, J. Marais, M. Kleingeld

引用次数: 14

Model base simulation application to compute achievable increment in a benson coal power plant owing to the implementation of energy efficiency activities 基于模型的仿真应用计算了本森燃煤电厂实施节能活动后可实现的增量

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904202

M. Simon, S. Tangwe, E. Meyer

{"title":"Model base simulation application to compute achievable increment in a benson coal power plant owing to the implementation of energy efficiency activities","authors":"M. Simon, S. Tangwe, E. Meyer","doi":"10.1109/ICUE.2014.6904202","DOIUrl":"https://doi.org/10.1109/ICUE.2014.6904202","url":null,"abstract":"Benson's boiler is a cost effective and an improved version of a coal fire boiler employed in electricity generation from a coal thermal power plant as opposed to the drum boiler. Benson's boilers are used in Eskom's coal thermal power plant. A simulation application was designed and built in the Simulink environment to compute both the generated and sent out power profiles using various mathematical models developed and embedded in the simulation, architectural algorithm to forecast the dynamic behaviour of the real plant using the predictors. All predictors were loaded in the source blocks while the predicted outputs displayed in the sink blocks in the Simulink environment. The predictors used in these models, included air heater temperature, main stream super heater temperature, high pressure heater temperature, cold well and hot well condenser temperatures and pressures, the total mass of coal burnt and auxiliary power consumption. Multiple linear regression models were developed and built from the before and after an outage generated and sent out power profiles using six months analyzed data from one unit of the Eskom's Benson boiler rated 600 MW in each of the scenarios. The Simulink simulation application can be used by an electricity generation company using the Benson's coal boiler to monitor any increase in generated and sent out power using the above mentioned indicators.","PeriodicalId":149169,"journal":{"name":"2014 International Conference on the Eleventh industrial and Commercial Use of Energy","volume":"287 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114189885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Modeling electrical networks with Object Oriented data structures for smart control 面向对象数据结构的智能控制电气网络建模

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904204

T. Ustun

{"title":"Modeling electrical networks with Object Oriented data structures for smart control","authors":"T. Ustun","doi":"10.1109/ICUE.2014.6904204","DOIUrl":"https://doi.org/10.1109/ICUE.2014.6904204","url":null,"abstract":"The electrical networks are becoming more complex with the introduction of distributed generators; power electronics based control devices and various types of loads. The electrical networks are no longer passive meshed systems, as they were a couple decades ago. Rather the generation, transmission and consumption co-exist almost at all levels of the electrical networks. With the increasing number of control parameters the management, protection and control of these electrical networks become a real challenge for power engineers. Furthermore, several loads and/or distributed generators may connect/disconnect from/to the network at any time. Therefore, the shape of the network is not fixed but variable. Power flow, power quality calculations as well as protection parameters such as relay settings, fault current settings etc. require that the exact structure of an electrical network should be monitored. This can be achieved by making use of communication lines in a central management system. In this paper, the electrical nodes such as relays, generators and loads are represented with Object Oriented (OO) data structures to model microgrids with graph theory. Dijkstra's algorithm is implemented to monitor the changes in the network and recognize new deployments. In this manner, the exact structure of the network can be monitored without central management and necessary adjustments can be made on the fly. The simulation of the proposed model shows the viability of such model and its effectiveness.","PeriodicalId":149169,"journal":{"name":"2014 International Conference on the Eleventh industrial and Commercial Use of Energy","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115741103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2