2017 52nd International Universities Power Engineering Conference (UPEC)最新文献_第3页

Electrical heater controller to regulating temperature on reactor in sasol solvents AAA plant 沙索尔溶剂厂反应器温度调节的电加热器控制器

2017 52nd International Universities Power Engineering Conference (UPEC) Pub Date : 2017-08-01 DOI: 10.1109/UPEC.2017.8231988

Emmanuel Griffiths Lekhuleni, S. Daniel Chowdhury

引用次数: 0

Addressing single and multiple bad data in the modern PMU-based power system state estimation 基于现代pmu的电力系统状态估计中单个和多个坏数据的处理

2017 52nd International Universities Power Engineering Conference (UPEC) Pub Date : 2017-08-01 DOI: 10.1109/UPEC.2017.8231940

H. Khazraj, F. Faria da Silva, C. Bak, U. Annakkage

{"title":"Addressing single and multiple bad data in the modern PMU-based power system state estimation","authors":"H. Khazraj, F. Faria da Silva, C. Bak, U. Annakkage","doi":"10.1109/UPEC.2017.8231940","DOIUrl":"https://doi.org/10.1109/UPEC.2017.8231940","url":null,"abstract":"Detection and analysis of bad data is an important sector of the static state estimation. This paper addresses single and multiple bad data in the modern phasor measurement unit (PMU)-based power system static state estimations. To accomplish this objective, available approaches in the PMU-based state estimation are overviewed, and their advantages and disadvantages are briefly explained. The largest normalized residual test is used to identify bad data. Then, phasor measurements are added by post-processing step in the state estimation. The proposed algorithms of phasor measurements utilization in state estimation can detect and identify single and multiple bad data in redundant and critical measurements. To validate simulations, IEEE 30 bus system are implemented in PowerFactory and Matlab is used to solve proposed state estimation using postprocessing of PMUs and mixed methods. Bad data is generated manually and added in PMU and conventional measurements profile. Finally, the location and analyze of bad data are available by the result of largest normalized residual test.","PeriodicalId":272049,"journal":{"name":"2017 52nd International Universities Power Engineering Conference (UPEC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122338309","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: 4

Dissolved gas analysis (DGA) and fourier transform infra red (FTIR) spectroscopy of thermal-aged natural ester-paper composite 热老化天然酯-纸复合材料的溶解气体分析(DGA)和傅里叶变换红外光谱(FTIR)

2017 52nd International Universities Power Engineering Conference (UPEC) Pub Date : 2017-08-01 DOI: 10.1109/UPEC.2017.8231890

Suwarno, Abi Munajad, Cahyo Subroto

{"title":"Dissolved gas analysis (DGA) and fourier transform infra red (FTIR) spectroscopy of thermal-aged natural ester-paper composite","authors":"Suwarno, Abi Munajad, Cahyo Subroto","doi":"10.1109/UPEC.2017.8231890","DOIUrl":"https://doi.org/10.1109/UPEC.2017.8231890","url":null,"abstract":"Due to environmental consideration, natural ester was developed as liquid insulation for high voltage transformer. This paper reports the Dissolved gas Analysis (DGA) and Fourier Transform Infrareed (FTIR) Spectroscopy of Thermally-Aged Natural Ester-paper composite. The sample used were natural ester from palm oil and kraft paper insulation. The samples used in these experiments were natural ester from palm oil and kraft paper transformer insulation. The 200 gr of ester samples, 10 gr of kraft insulation paper, and 17.5 gr copper were put together with copper conductor in heat-resistant hermetic bottles to simulate actual condition of transformator. The samples were subjected to a thermal stress in a controllable oven at temperature of 120oC and 150oC. The thermal aging was conducted for duration of 2 weeks, 4 weeks and 6 weeks. The dissolved gas in the ester after a certain aging temperature and period was determined using a DGA testing. The gas species and the concentration of each gas under various aging conditions were analyzed. Dissolved gas analysis indicated that thermal aging in ester-paper composite insulation released, CH4 (Methane), C2H6 (ethane), and CO (Carbon Monoxide). FTIR measurement was conducted for the thermally-aged ester insulation. The comparative analysis of DGA and FTIR results was done to clarify the origin of the gas released in the thermally-aged ester paper composite insulation.","PeriodicalId":272049,"journal":{"name":"2017 52nd International Universities Power Engineering Conference (UPEC)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122411257","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

Operation of stand-alone self-excited induction generator supported by energy storage systems for small scale wind energy generation 小型风力发电中储能系统支持的单机自励感应发电机的运行

2017 52nd International Universities Power Engineering Conference (UPEC) Pub Date : 2017-08-01 DOI: 10.1109/UPEC.2017.8231868

Nachat Nasser, M. Farrag

引用次数: 3

Methodology for analysis of energy balance using state estimator and real-time measurements 使用状态估计器和实时测量分析能量平衡的方法

2017 52nd International Universities Power Engineering Conference (UPEC) Pub Date : 2017-08-01 DOI: 10.1109/UPEC.2017.8231948

Angélica Felipe da Silva, D. Bernardon, A. da Rosa Abaide, Maicon Jaderson da Silveira Ramos, D. Porto

引用次数: 0

Analysis of high penetration of electric vehicles and photovoltaics on a greek low-voltage network 希腊低压电网中电动汽车和光伏的高渗透率分析

2017 52nd International Universities Power Engineering Conference (UPEC) Pub Date : 2017-08-01 DOI: 10.1109/UPEC.2017.8231987

A. Bouhouras, Alexandras Athanasiou, Georgios C. Christoforidis, A. Tsiakalos, M. Roumeliotis

{"title":"Analysis of high penetration of electric vehicles and photovoltaics on a greek low-voltage network","authors":"A. Bouhouras, Alexandras Athanasiou, Georgios C. Christoforidis, A. Tsiakalos, M. Roumeliotis","doi":"10.1109/UPEC.2017.8231987","DOIUrl":"https://doi.org/10.1109/UPEC.2017.8231987","url":null,"abstract":"This paper examines the scenario of high penetration of Photovoltaics (PV) and Electric Vehicles (EV) in Low-Voltage (LV) Distribution Networks (DN), using as a case study a typical DN found in Greece. The European Union (EU) has set targets and Directives that make it very likely to find in the near future DNs with a large number of PVs inducing overvoltages and uncontrolled EV charging resulting in under-voltages. Since PV production and EV charging generally happen at different times, especially in residential case studies, a DN may experience both unwanted circumstances at the same day. One way to deal with these issues is to smartly utilize distributed or centralized storage, which may additionally delay necessary investments on the DNs. This paper utilizes a case study of a typical DN found in Greece, suitably adapted to illustrate the above concepts. First, an analysis of the stress imposed to the DN by both PVs and EVs is evaluated, using as input real measurements at the beginning of the LV feeder. Then, the paper suggests a simple utilization of storage in order to keep the voltages at all nodes of the DN inside the desired limits. Finally, a short analysis regarding the power losses is presented.","PeriodicalId":272049,"journal":{"name":"2017 52nd International Universities Power Engineering Conference (UPEC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129002157","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

A logarithmic segmented Laplace transform and its application to a battery diagnosis 对数分段拉普拉斯变换及其在电池诊断中的应用

2017 52nd International Universities Power Engineering Conference (UPEC) Pub Date : 2017-08-01 DOI: 10.1109/UPEC.2017.8232026

N. Nagaoka, T. Ishii

引用次数: 4

Generic average-value modeling of MMC-HVDC links considering submodule capacitor dynamics 考虑子模块电容动态的MMC-HVDC链路通用平均值建模

2017 52nd International Universities Power Engineering Conference (UPEC) Pub Date : 2017-08-01 DOI: 10.1109/UPEC.2017.8231880

S. Nanou, S. Papathanassiou

引用次数: 8

Flashover influence of fog rate on the characteristics of polluted silicone-rubber insulators 雾率对污染硅橡胶绝缘子特性的闪络影响

2017 52nd International Universities Power Engineering Conference (UPEC) Pub Date : 2017-08-01 DOI: 10.1109/UPEC.2017.8231958

A. Krzma, M. Albano, A. Haddad

{"title":"Flashover influence of fog rate on the characteristics of polluted silicone-rubber insulators","authors":"A. Krzma, M. Albano, A. Haddad","doi":"10.1109/UPEC.2017.8231958","DOIUrl":"https://doi.org/10.1109/UPEC.2017.8231958","url":null,"abstract":"This paper presents an experimental investigation on flashover performance of silicone rubber (SiR) outdoor insulators. The AC flashover-voltage (FOV) of selected insulator designs is measured adopting the clean fog test and a high voltage ramp test. A conventional insulator design with a plain surface has been tested and compared with insulators having a textured surface. The FOV dependency on the pollution severity level is quantified. The influence of SiR profiles and wetting rate on the mean FOV are also investigated. For different ranges of wetting and pollution severity conditions, the results showed that the textured insulator designs exhibit an increased flashover performance compared with conventional non-textured insulators. Textured insulators can offer an increased FOV performance up to 16% compared with the average FOV of the conventional insulator. Under lower fog rate, the FOV level for both insulator types does not gradually increase with the testing time but is characterised by a U-trend. For moderate and high fog rates, a stable increase in FOV is observed. The result gives an indication that the average FOV is substantially affected by the higher fog rate for both insulator profiles. Furthermore, a greater improvement was gained on the mean FOV under textured design.","PeriodicalId":272049,"journal":{"name":"2017 52nd International Universities Power Engineering Conference (UPEC)","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121562844","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: 8

Assessment of residential electricity tariff switching based on customer response elasticity 基于用户响应弹性的居民电价转换评估

2017 52nd International Universities Power Engineering Conference (UPEC) Pub Date : 2017-08-01 DOI: 10.1109/UPEC.2017.8231933

Sima Davarzani, I. Pisica, G. Taylor

引用次数: 1