2018 IEEE 7th International Conference on Power and Energy (PECon)最新文献

{"title":"DC Breakdown Performance of Polyethylene/Silicon Nitride Nanocomposites upon Non-isothermal Crystallization","authors":"S. Kamarudin, K. Y. Lau, N. H. Rahim, Chee Wei Tan, Wan Aizan Wan Abdul Rahman","doi":"10.1109/PECON.2018.8684132","DOIUrl":"https://doi.org/10.1109/PECON.2018.8684132","url":null,"abstract":"For last decades, the topic of polymer nanocomposites have been widely studied in the scientific literature since the material system promises a substantial dielectric properties enhancement even at low nanoparticles loading. Nevertheless, factors contributing to increased or decreased DC breakdown strength of nanocomposites are far from understood. In this paper, an investigation on the DC breakdown strength of polyethylene nanocomposites that contained different amounts of silicon nitride with different non-isothermal crystallization processes is reported. The non-isothermal crystallization techniques were determined by fast, medium and slow cooling rate conditions by the differential scanning calorimetry (DSC) for all the nanocomposite samples. The chemical structures of the nanocomposites were characterized by Fourier transform infrared (FTIR) spectroscopy and the morphology of the nanocomposites was determined by scanning electron microscopy (SEM). From DC breakdown testing, the breakdown results of the nanocomposites were found to vary under different non-isothermal crystallization conditions.","PeriodicalId":278078,"journal":{"name":"2018 IEEE 7th International Conference on Power and Energy (PECon)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131546417","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}

{"title":"Forced Oscillation In Indian Grid -Case Study","authors":"A. Singh, Saibal Ghosh, Surajit Banerjee","doi":"10.1109/PECON.2018.8684151","DOIUrl":"https://doi.org/10.1109/PECON.2018.8684151","url":null,"abstract":"Historically Low frequency oscillations (LFO) had always been a menace in operating an interconnected grid. The challenge of mitigating LFO has only enhanced umpteen times with the grid becoming voluminous and complex. Hitherto, LFO could only be felt through hunting of rotating masses or fluctuation of voltage till recently, wide area monitoring mechanism through synchro phasors, decoded the phenomenon in real time. Any LFO oscillation especially of inter area type has its global footprint on hundreds of PMUs spread over thousands of kilometer. Signature generated thereby indicates the epicenter of oscillation or the constituent members of coherent resonance. Inherent modes, damping and severity can be elucidated through advanced applications. Root causes of LFOs are primarily attributed to switching or tripping in vulnerable weak interconnections in the grid. Such events leave footprints and these footprints recorded by PMUs are further analyzed. Based on the type of oscillation - whether inter area, local mode or intra plant mode, remedial actions such as tuning of damping controllers are taken. Sometimes the root cause of oscillations cannot be pinpointed due to all pervading & global nature of the phenomenon where footprints are left on PMUs without identified feet. Forced oscillations, however, are the response of system to an apparatus in a limit cycle–e.g. generator controller. As if a device is forcefully exciting the whole system at a particular frequency or a spectrum of frequencies. If the frequency of forced oscillation is very near to the inter area frequency mode or pre identified oscillation mode present in the grid, it can cause resonance; impact of which would be wide spread. The only way to damp these oscillations is to remove the source. This paper explains the difference of forced oscillation with natural low frequency oscillation and showcases some case studies of forced oscillation observed recently in Indian grid. It also explains how synchrophasors are used by real time grid operators for analysis and identification of these forced oscillations and mitigation in real time.","PeriodicalId":278078,"journal":{"name":"2018 IEEE 7th International Conference on Power and Energy (PECon)","volume":"496 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134155795","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}

{"title":"A Study of Biodegradable Oil as Transformer Insulating Material","authors":"","doi":"10.1109/pecon.2018.8684106","DOIUrl":"https://doi.org/10.1109/pecon.2018.8684106","url":null,"abstract":"In power transformers, liquid insulating materials are used as cooling agent and electrical insulator. Currently, mineral oil is the most commonly used liquid insulation material in power transformers. However, mineral oil has some drawbacks in its characteristics such as a deprived biodegradability and high flammability. On the other hand, mineral oil is a very good insulating material for power transformer and has very good electrical features. Researchers are presently looking new sorts of insulating materials, which are more environmentally friendly. The further improvement of power transformer oil is biodegradable oil and the focus is on vegetable oils. This paper investigates about mix of corn oil and palm kernel oil as an option to mineral oil. Different characteristics of mix corn oil and palm kernel oil such as breakdown voltage, aging process and moisture content were measured according to standards and then the results were compared to the characteristics of mineral oil. It was shown that the mixture of corn oil and palm kernel oil has the same or greater characteristics compared to mineral oil.","PeriodicalId":278078,"journal":{"name":"2018 IEEE 7th International Conference on Power and Energy (PECon)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128505137","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}

{"title":"Real On-Site Partial Discharge Measurement Technique in Medium Voltage Power Cable","authors":"A. Z. Abdullah, M. Rohani, M. Isa, H. Hamid, S. Arshad, M. Othman","doi":"10.1109/PECON.2018.8684134","DOIUrl":"https://doi.org/10.1109/PECON.2018.8684134","url":null,"abstract":"This paper presents the measurement and detection techniques of partial discharge (PD) on medium voltage power cable with the idea to propose simplest and accurate online on-site PD measurement. The Rogowski Coil (RC) has been choose as measuring sensor to detect and measure PD signal at site. A real 11kV site at northern Malaysia substation was selected to perform the measurement with considering current PD measurement technique by utility. The propose method is used to locate the PD signal in three phase MV underground cross-link polyethylene (XLPE) cable with 240 mm2 size and 3 km length between two substations. On-site measurement has been carried out to verify the ability of method to detect PD signal and compare with previous method by utility. The analysis of PD signal using FFT was performed to characterize the actual PD signal. In this paper, results indicate that the measurement technique performed better and easier in detecting PD signal for online condition.","PeriodicalId":278078,"journal":{"name":"2018 IEEE 7th International Conference on Power and Energy (PECon)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115958597","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}

{"title":"Hierarchical Distribution Network Control Scheme for Power Flow Regulation at the Interconnection Points between several Voltage Levels","authors":"Jannik Zwartscholten, D. M. Gonzalez, C. Rehtanz, J. Myrzik","doi":"10.1109/PECON.2018.8684078","DOIUrl":"https://doi.org/10.1109/PECON.2018.8684078","url":null,"abstract":"With the large-scale integration of distributed energy resources (DERs) in the distribution network and the installation of communication infrastructure the controllability in distribution grids increases. This paper presents a hierarchical distribution network control scheme, which aims to control the active power flow between several voltage levels in real time. In this way distribution grids are able to provide new degrees of freedom for the operation of the transmission grid. In order to achieve this, the presented control scheme uses the flexibility of DERs located in distribution grids. The applicability of the hierarchical distribution network control scheme is demonstrated in a time-domain simulation in a distribution network with a medium voltage (MV) and high voltage (HV) level.","PeriodicalId":278078,"journal":{"name":"2018 IEEE 7th International Conference on Power and Energy (PECon)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125608868","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}

{"title":"Comparative Analysis between Net and Gross Metering for Residential PV System","authors":"S. Alasadi, M. Abdullah","doi":"10.1109/PECON.2018.8684080","DOIUrl":"https://doi.org/10.1109/PECON.2018.8684080","url":null,"abstract":"In this paper, comparative assessment of the previous feed-in tariff (FiT) and the new net energy energy metering (NEM) scheme for residential PV system in Malaysia is carried out. The study used two different load profiles of two different residential houses for fixed rooftop PV system. The analysis is performed by using Homer software. The electricity tariff for Malaysia is used to compare the FiT and NEM in terms of financial benefit to consumers. This paper considers several financial factors such as payback period, Net Present Cost (NPC) and Cost of Electricity (COE). For comparison, the similar analysis is conducted by using Electricity tariff in another country in Europe i.e. Portugal. The comparative results indicated that FiT provides better financial return as compared to NEM for residential consumer in Malaysia.","PeriodicalId":278078,"journal":{"name":"2018 IEEE 7th International Conference on Power and Energy (PECon)","volume":"115 17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126367583","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}

{"title":"Design and Development of Automatic Temperature Control System for Solar Water Heater System","authors":"Harish V. Mekali, K. R. Somashekhar, Adithya Gowda Baragur, M. Arfan, S. Surendra, K. Nayak","doi":"10.1109/PECON.2018.8684084","DOIUrl":"https://doi.org/10.1109/PECON.2018.8684084","url":null,"abstract":"Solar Water Heating Systems(SWHS) are a clean and renewable source compared to any other source of water heating. However, affected by the weather, solar energy is of great uncertainty. There is also an uncertainty in the usage and requirement of the hot water in the households. Therefore, in order to ensure a reliable supply of hot water, the system should consist of an auxiliary heat source. Energy input to the system is the sum of solar heat and complementary heat from the auxiliary heat source. The present work deals with the design, development, and testing of a closed loop control system to obtain hot water at any desired temperature and for a required amount of time. This closed-loop system considers the temperature of water in both, a water storage tank and in an exit pipe. The system can be scheduled to work only during the particular time or it can also be made to work irrespective of time. This work also extends to a mobile phone application to monitor and control the complete system to provide the comfortability of remote control. The whole system has been developed with power and cost consciousness. This low power – low-cost solution offers water and power saving with a comfortable lifestyle. It is also an attempt to provide a competitive edge to the solar water heater industry over the electrical water heater industry and thus drive the world towards sustainable energy sources.","PeriodicalId":278078,"journal":{"name":"2018 IEEE 7th International Conference on Power and Energy (PECon)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123413804","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}

{"title":"INVESTIGATION AND MODELLING OF LOAD SHEDDING AND ITS MITIGATION USING HYBRID RENEWABLE ENERGY SYSTEM","authors":"Muhammad Paend Bakht, Z. Salam, A. R. Bhatti","doi":"10.1109/PECON.2018.8684040","DOIUrl":"https://doi.org/10.1109/PECON.2018.8684040","url":null,"abstract":"This paper outlines a solution to the problem of load shedding by integrating the renewable energy source (RES) with the conventional power grid. The case study is presented for the electricity sector of Pakistan having energy crisis. The proposed method provides a localized and practical solution to mitigate the effect of load shedding that arises due to an imbalance between the power supply and the demand. Grid stability is ensured by the assistance of photovoltaic (PV) and battery banks to avoid critical frequency disturbance. Investigations are carried out to provide an uninterrupted supply of electricity by dynamic frequency control with the help of a centralized energy management system (CEMS). It is envisaged that the proposed solution can be applied to increase the generation capacity on an immediate basis which is not possible through conventional sources.","PeriodicalId":278078,"journal":{"name":"2018 IEEE 7th International Conference on Power and Energy (PECon)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121337042","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}

{"title":"Loss Sensitivity and Voltage Deviation Index Based Intelligent Technique for Optimal Placement and Operation of Distributed Generators","authors":"Dhruvkumar V. Bhatt, Yagnesh H. Bhatt, V. Pakka","doi":"10.1109/PECON.2018.8684177","DOIUrl":"https://doi.org/10.1109/PECON.2018.8684177","url":null,"abstract":"Distribution system is the crucial part of the power system which needs to be monitored for quality since it is the last stage in delivering electricity to consumers. The main aim of suppliers is therefore to maintain excellent quality of supply with minimal support at the network level. This includes dealing with issues around voltage regulation and minimization of real power losses on the network which are reflected in a uniform voltage profile through various load points on the feeders. However, with increase in decentralization, Distributed Generation (DG) becomes the focal point of distribution networks and can be used to achieve the above mentioned objectives. DGs are used in this paper to minimize the losses along with an improvement in the voltage profile. The location of these DG units on the network is addressed as an optimization problem using the loss sensitivity index and voltage deviation index. The size of power injected by DG units is obtained with using an intelligent approach that combines Genetic Algorithm (GA) with neural networks. Different cases of DG in terms of real and reactive power injected are considered resulting in an improvement in voltage profile. The loss sensitivity and voltage deviation indices show the best result for the location of DG needed to minimize the power loss along with improvement in voltage regulation. This approach is tested on a 13-bus distribution network with different types of loads placed throughout the feeder.","PeriodicalId":278078,"journal":{"name":"2018 IEEE 7th International Conference on Power and Energy (PECon)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128873237","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}

{"title":"Characterization of Electrical Stress of Natural Ester Under Impulse Empirical Analysis","authors":"Muhammad Ameerul Ikmal Ahmad Taufek, N. D. Ahmad, Siti Solehah Md Ramli, N. H. Ishak, M. T. Ishak, Nor Asiah Muhamad","doi":"10.1109/PECON.2018.8684169","DOIUrl":"https://doi.org/10.1109/PECON.2018.8684169","url":null,"abstract":"Transformer is an important component in power system. Lightning impulse will cause an overvoltage that will damage the transformer. Hence, transformer need an insulation that can protect it and withstand lightning impulse. Mineral oil (MO) was the most commonly used oil as liquid insulation. Although MO provide an excellent performance in transformer, it still gives bad impact due to it low flash point, fire point and not biodegradable. Virgin coconut oil (VCO) offer a great potential for replacing MO as an insulating in transformer due to it high flash point, high fire point and biodegradable. This project presents the examination of breakdown voltage of both oil at both polarity, with and without copper particle, and at thermal aging and before thermal aging. Test conducted under uniform field sphere-sphere with lightning impulse voltage. Breakdown test were conducted according to ASTM 3300 standard for lightning impulse by using rising method. For thermal aging process, oil sample being heated at 100 °C for 100 hours. BDV for negative polarity was higher compared with positive polarity. Influence of thermal aging and void contamination shows that there was reduction in BDV of oil sample. Result shows that, although BDV for VCO under all condition is lower compared with MO, but it is still comparable and acceptable.","PeriodicalId":278078,"journal":{"name":"2018 IEEE 7th International Conference on Power and Energy (PECon)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130703525","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}