A. Bouzid, P. Sicard, A. Chériti, H. Chaoui, P. M. Koumba
{"title":"Adaptive hysteresis current control of active power filters for power quality improvement","authors":"A. Bouzid, P. Sicard, A. Chériti, H. Chaoui, P. M. Koumba","doi":"10.1109/EPEC.2017.8286221","DOIUrl":"https://doi.org/10.1109/EPEC.2017.8286221","url":null,"abstract":"In power grids, the active power filter (APF) is an important device for compensation of harmonic pollution and reactive power caused by nonlinear loads. However, the control method has a significant influence on the APF performance in eliminating the distorted currents. Henceforth, this paper explores the control of shunt active power filters based on: 1) instantaneous power control strategy (p-q Theory) for extracting the reference currents for APF, and 2) adaptive hysteresis current control (AHCC) strategy for performance evaluation. Different case studies are carried out such as, balanced/unbalanced source with balanced/unbalanced load, distorted source with balanced load in Matlab®/ SimPowerSystems. Simulation results highlight the effectiveness of the proposed control method.","PeriodicalId":141250,"journal":{"name":"2017 IEEE Electrical Power and Energy Conference (EPEC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123061795","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":"Synchronous switching for parallel-connected DC-DC boost converters","authors":"Muamer M. Shebani, T. Iqbal, J. Quaicoe","doi":"10.1109/EPEC.2017.8286189","DOIUrl":"https://doi.org/10.1109/EPEC.2017.8286189","url":null,"abstract":"This paper investigates the relationship between synchronous switching and circulating current for two parallel connected DC-DC boost converters. The investigation is based on having different size of the converters. For different converter sizes, the differences in the time delays in the control loops cause asynchronous switching of the parallel-connected DC-DC boost converters which leads to undesirable circulating current. An optimized controller for the converters is proposed in the paper to minimize the circulating current. The optimized controller provides a synchronous duty ratio input to the parallel-connected DC-DC boost converters. The investigation and effectiveness of the optimized controller are verified using MATLAB simulation.","PeriodicalId":141250,"journal":{"name":"2017 IEEE Electrical Power and Energy Conference (EPEC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123411158","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":"Declining cost of renewable energy technology: An opportunity for increasing electricity access in sub-Saharan Africa","authors":"Chukwuma Leonard Azimoh, B. Paul, C. Mbohwa","doi":"10.1109/EPEC.2017.8286218","DOIUrl":"https://doi.org/10.1109/EPEC.2017.8286218","url":null,"abstract":"Traditionally, electric networks in Africa are dominated by centralized fossil base grids, preponderantly relying on gas, coal and hydro plants for power generation. Analysis of the energy market in sub-Saharan Africa (SSA) have consistently displayed a stunted growth. Previous reports argued that increasing electricity access through expansion of the existing grid is no longer sufficient due to costs, political and economic interests and environmental concern. Other arguments are based on the existence of Islands and mountainous locations not immediately accessible to the utility grid. This situation has lent credence to the argument in support of renewable energy systems. The current decline in the cost of renewable energy technology provides an opportunity to explore this market, given the abundance of this resources in SSA region. However, the assessment of energy climate in SSA suggests that a lot needs to be done in order to avail these opportunities. This paper investigates the challenges, policy issues and financing barriers inhibiting the penetration of green energy in SSA. The study shows that upscaling electricity access requires building of strong institutions to guide against policy inconsistencies. Electrification programs should incorporate capacity building with technology transfer from the outset. Also, it identifies capital expenditure (CAPEX) and operational expenditure (OPEX) phases of projects as the two key failure points in this region.","PeriodicalId":141250,"journal":{"name":"2017 IEEE Electrical Power and Energy Conference (EPEC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116022101","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":"Parameter validation for Kalman filter based dynamic state estimation of power plant dynamics","authors":"Avishek Paul, G. Joós, I. Kamwa","doi":"10.1109/EPEC.2017.8286201","DOIUrl":"https://doi.org/10.1109/EPEC.2017.8286201","url":null,"abstract":"A study of effect of parametric variability on dynamic state estimates of synchronous generator operating using terminal Phasor Measurement Unit has been conducted. Parametric variations have been modelled using Monte Carlo method and state deviation from actual ones has been presented using suitable metrics. In addition impact of individual parametric variations on all the states have been studied as well. Furthermore, two Kalman filter variants (Extended Kalman Filter with unknown inputs and Unscented Kalman Filter) has been considered to ascertain whether choice of Kalman filter affects state estimates when subjected to parametric variability. Initial results have been performed on a Single Machine Infinite Bus (SMIB) system and consistency of the results has been validated on an interconnected network using the benchmark IEEE 39 bus system.","PeriodicalId":141250,"journal":{"name":"2017 IEEE Electrical Power and Energy Conference (EPEC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122210741","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}
Seyed Masoud Mohseni‐Bonab, I. Kamwa, A. Moeini, A. Rabiee
{"title":"Investigation of BESSs' benefits in transmission and distribution systems operations using integrated power grid co-optimization","authors":"Seyed Masoud Mohseni‐Bonab, I. Kamwa, A. Moeini, A. Rabiee","doi":"10.1109/EPEC.2017.8286159","DOIUrl":"https://doi.org/10.1109/EPEC.2017.8286159","url":null,"abstract":"This paper aims to develop a framework to study and optimize the benefits high penetrations of battery energy storage systems (BESS) in the integrated transmission & distribution (T&D) systems. A coupled T&D systems analysis framework is developed through a co-optimization approach. The following objective functions are considered in the proposed optimization approach: 1) Real power losses (PL), 2) Voltage deviation (VD) at load buses, and 3) loading margin (LM) or loadability of system. The framework is utilized to investigate the impacts of high penetrations of distributed energy resources with embedded BESS. Simulations are performed with 100 and 50 percent of BESS charging capacity. The proposed framework is examined on the IEEE 118-bus system. The results show that the installation of distributed BESSs at the distribution side, decrease the PL and VD and also improve the system total LM.","PeriodicalId":141250,"journal":{"name":"2017 IEEE Electrical Power and Energy Conference (EPEC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129606503","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":"Utilizing phase shifting transformer for effective integration of wind generation","authors":"I. R. Pordanjani, F. Qureshi, A. Jafari, Ryan Cui","doi":"10.1109/EPEC.2017.8286167","DOIUrl":"https://doi.org/10.1109/EPEC.2017.8286167","url":null,"abstract":"Due to the ever increasing interest in integration of renewable energy sources on the one hand and the limitations of power systems on the other hand, the effective utilization of existing assets is crucial to maximize the amount of renewable sources that can be accommodated. One example of such assets is phase shifting transformers (PST). An existing PST, which is currently on a manual regulation mode, controls the active power transfer on a 138kV tie line connecting the southwest of Alberta system to the southeast of the BC system. The Alberta SW region is a leading producer of wind energy. Due to the transmission system limitations, several Remedial Action Scheme (RAS) have been installed which run back/trip wind generators. This paper shows that automatic control of this PST with proper settings along with modifications to protection schemes can reduce the risk of RAS operation which in turn will enable the system to accommodate higher level of wind power penetration. This paper can also be viewed as guidelines for the required studies to identify potential problems and possible solutions for future similar applications.","PeriodicalId":141250,"journal":{"name":"2017 IEEE Electrical Power and Energy Conference (EPEC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128220414","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":"Effective weather/frequency-based transmission line models—Part I: Fundamental equations","authors":"Ali R. Al-Roomi, M. El-Hawary","doi":"10.1109/EPEC.2017.8286206","DOIUrl":"https://doi.org/10.1109/EPEC.2017.8286206","url":null,"abstract":"Most of electric power system studies presented in the literature are conducted based on steady-state weather and frequency. It is known that the conductor's resistance is sensitive to the surrounding temperature and the conductor's inductive and capacitive reactances are sensitive to the system's frequency. Thus, neglecting the dynamic effects of these three quantities could violate any pre-defined feasible solution of those studies. More than that, even if the feasibility criterion is still valid, the final solution could be shifted from its optimal setting. Many attempts have been introduced to solve this important aspect. However, the models suggested by those researches are either: very complicated, consume high CPU time, or designed for some specific tasks. This paper re-derives the Telegrapher's equations from this perspective. That is, solving the main cause of the problem can guarantee the root solution to all the related studies. The objective is to keep the generality of these studies by shifting all the mathematical issues to the Telegrapher's equations. This part of the study focuses on transmission lines. Some experiments are solved with this temperature/frequency-based (TFB) model.","PeriodicalId":141250,"journal":{"name":"2017 IEEE Electrical Power and Energy Conference (EPEC)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128631024","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 implementation of a low cost web server using ESP32 for real-time photovoltaic system monitoring","authors":"Ibrahim M. Allafi, T. Iqbal","doi":"10.1109/EPEC.2017.8286184","DOIUrl":"https://doi.org/10.1109/EPEC.2017.8286184","url":null,"abstract":"This paper presents a method for applying a web server based on ESP32 to a small photovoltaic (PV) power system to monitor and/or collect the PV and the battery current, voltage data. The designed system uses low-cost sensors, a microcontroller ESP32, Wi-Fi, and an SD-card reader. The ESP32 collects data from sensors. All of the data are saved in a text file on an SD-card, which is connected with ESP32 SPI pins. The text file is saved on the SD card for a week or longer, after which the system deletes all the data and starts saving new data. The web page file is saved on an SD card as well, so the ESP32 is programmed to access the web page by using the Wi-Fi via a laptop, cellphone, or tablet. Moreover, the web page has a link that allows users to download the data text file simply by clicking on the link. This can also be done remotely. The results of the experiments demonstrate that the web server works in real-time and can be effectively used for monitoring small solar energy systems.","PeriodicalId":141250,"journal":{"name":"2017 IEEE Electrical Power and Energy Conference (EPEC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124543307","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":"Probabilistic available delivery capability assessment of general distribution network with renewables","authors":"Hao Sheng, Xiaozhe Wang","doi":"10.1109/EPEC.2017.8286215","DOIUrl":"https://doi.org/10.1109/EPEC.2017.8286215","url":null,"abstract":"Rapid increase of renewable energy sources and electric vehicles in utility distribution feeders introduces more and more uncertainties. To investigate how such uncertainties may affect the available delivery capability (ADC) of the distribution network, it is imperative to employ a probabilistic analysis framework. In this paper, a formulation for probabilistic ADC incorporating renewable generators and load variations is proposed; a computationally efficient method to solve the probabilistic ADC is presented, which combines the up-to-date sparse polynomial chaos expansion (PCE) and the continuation method. A numerical example in the IEEE 13 node test feeder is given to demonstrate the accuracy and efficiency of the proposed method.","PeriodicalId":141250,"journal":{"name":"2017 IEEE Electrical Power and Energy Conference (EPEC)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121951406","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":"Detecting a distributed denial of service attack using a pre-processed convolutional neural network","authors":"M. Ghanbari, W. Kinsner, K. Ferens","doi":"10.1109/EPEC.2017.8286243","DOIUrl":"https://doi.org/10.1109/EPEC.2017.8286243","url":null,"abstract":"This paper presents a scheme for detecting distributed denial of service (DDoS) attacks for smart grids. The main procedure of the proposed approach consists of applying a discrete wavelet transform to input data to extract features; training a convolutional neural network (CNN) to the extracted features; and testing the CNN to detect anomalous behavior in the data based on a threshold determined in the training parameters. The implementation detected the DDoS attack with 56.1% accuracy with the one stage CNN and 80.77% accuracy with the one stage pre-processed CNN.","PeriodicalId":141250,"journal":{"name":"2017 IEEE Electrical Power and Energy Conference (EPEC)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131968488","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}