2018 Australasian Universities Power Engineering Conference (AUPEC)最新文献

{"title":"Mining Anomaly Communication Patterns for Industrial Control Systems","authors":"Tsung-Chiao Yu, Jyun-Yao Huang, I-En Liao, Kuo-Fong Kao","doi":"10.1109/AUPEC.2018.8757940","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757940","url":null,"abstract":"The attacks on industrial control systems (ICS) have been exemplified by the malwares Stuxnet, Industroyer, and Triton that targeted nuclear facilities of Iran in 2010, power grid of Ukraine in 2016, and Safety Instrumented System (SIS) controllers of a Middle East country in 2017, respectively. As a result, the issues concerning Critical Infrastructure Information Protection (CIIP) have drawn much attention among academia, industry, and government in many countries.In this paper, we propose an anomaly detection method for ICS networks. The main idea of the proposed method is to model the normal behavior patterns of TCP and UDP payloads as frequent patterns and non-frequent pattern clusters. The normal behavior payloads are first processed by sequential pattern mining algorithm to extract frequent patterns, and then the payloads are projected against frequent patterns. After projection, the projected payloads are clustered using hierarchical agglomerative clustering algorithm to find representative variations in normal behaviors. The experimental results show that the proposed method has very good performance in terms of the metrics such as accuracy, recall, precision, false alarm, and false dismissal for the ICS networks that use Modbus/TCP or BACnet protocols. The proposed system model can also leverage honeypots deployed in ICS networks to generate attack signatures, which can be helpful in filtering out known attacks.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126312310","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":"Assessment of Protective Device Sensitivity with Increasing Penetration of Distributed Energy Resources","authors":"Muhammad Yousaf, K. Muttaqi, D. Sutanto","doi":"10.1109/AUPEC.2018.8757966","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757966","url":null,"abstract":"The integration of distributed energy resources (DERs) into the distribution grid has improved the reliability of power networks along with significant reduction in transmission power loss. However, embedding distributed generation (DG) can produce significant protection issues for the electrical utilities such as incorrect protection coordination and increased protective device sensitivity. This paper proposes a platform to analyze the potential sensitivity deterioration issues in different protective devices (PDs) in the presence of an increasing DG penetration and its location. The impacts of the fault impedance and the fault location on the potential increase of the sensitivity of the PDs have been assessed. This paper proposes a methodology to maintain protection selectivity among different PDs to avoid their false alarm and wrong operation when DGs are connected to the distribution grid. The IEEE 13-node test system has been utilized to test and validate the proposed approach.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115049399","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":"Distributed Control and Power Management Strategy for an Autonomous Hybrid Microgrid with Multiple Sub-Microgrids","authors":"Mohammad Abuhilaleh, Li Li, Jianguo Zhu, M. Hossain","doi":"10.1109/AUPEC.2018.8757953","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757953","url":null,"abstract":"This paper proposes a novel approach of distributed coordination control for multiple sub-microgrids (SMGs) within a hybrid AC/DC microgrid. The conventional control approach for managing power flow among AC and DC SMGs is based on the proportional power sharing principle. This is mainly implemented by equalising the normalized voltage at the DC side and the frequency at the AC side for any interfaced SMGs. The proposed method suggests a distributed control system that ensures a total controllability for the interlinking converters. It overcomes the total dependency on a specific variable for power exchange. The proposed method not only enables control of the power flow between SMGs but also ensures the continuity of power transfer if any single SMG fails. Three case studies are presented to demonstrate the validity and capability of the proposed approach using the MATLAB/Simulink software. From the obtained results, it is found that the proposed control system provides a high level of flexibility in managing the power flow among SMGs.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124685888","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":"Non-Linear Compensation of Delays in the Wide Area Control of SVCs for First Swing Stabilisation and Damping","authors":"E. Palmer, G. Ledwich, A. Vahidnia","doi":"10.1109/AUPEC.2018.8757915","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757915","url":null,"abstract":"A non-linear delay compensation algorithm is presented for improving the robustness to delays of a wide area control strategy directed at using remote measurements to perform load modulation by means of an SVC. The compensation algorithm uses non-linear backward and forward projection of PMU based angle and velocity measurements to compensate for delays. Through the simulation of a simple network it is shown that the robustness to delays is greater than 7 seconds much greater than any expected delay. The non-linear delay compensation algorithm also provides better first swing stability than linear delay compensation.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128475487","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 Practical Method to Identify Contributions of Harmonics in Power Systems","authors":"A. D. de Beer, S. Kasemuana, J. Pretorius","doi":"10.1109/AUPEC.2018.8757956","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757956","url":null,"abstract":"This paper presents a practical method to quantify the contribution of harmonics between the utility and a customer at the point of common coupling (PCC). This approach is based on Thevenin’s equivalent circuit where the impedance and source characteristics of both the utility and customers’ sides are known. This paper describes the harmonic determination of the Thevenin equivalent of the utility and a customer that does not rely on injection or downtime. It is calculated using measured values of voltage and current occurring at different times when the load changes. With the Thevenin equivalent of the power system known, the individual harmonic contributions of the utility and a customer can be calculated.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114269524","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":"Development of A Low-Pass Filter for Partial Discharge Testing System with the Power Frequency Converter","authors":"T. Prombud, P. Kitcharoen, P. Yutthagowith","doi":"10.1109/AUPEC.2018.8757986","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757986","url":null,"abstract":"The development of a low-pass filter for partial discharge test system that based on a power frequency converter is presented in this paper. The PD testing system is composed a 200-Hz power frequency converter and the designed filter connected with a high-voltage test transformer and a conventional partial discharge detection system. It is found that the power frequency converter acting as the low-voltage source always provides the high noise level with effecting to the background noise occur in the partial discharge test. Sometimes noise level is higher than the acceptable level of the PD tests in some high-voltage equipment such as potential transformers, distribution transformer, and so on. In this paper, the performances of the filters with different designs are studied and compared the result in terms of the output voltage difference ($text{RMS} , text{voltage} , text{and} , text{peak} , text{voltage} /sqrt 2$), total harmonic distortion of the output high voltages value (THDv), and value of background noises as occur in the partial discharge test. The low-voltage source based on uni-polar pulse width modulation (PWM) topology was employed in the PD testing system. From the experimental results, the designed filter shows the promising performances with low levels of the background noise, THDv, and voltage difference. The experimental results show that the background noise is lower than 2.0 pC, the voltage difference and THDv are less than 5%. In addition, the designed filter has been tested in the partial test of a real potential transformer successfully.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133881747","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":"High Voltage Substation Automation and Protection System Based on IEC 61850","authors":"Shantanu Kumar, N. Das, S. Islam","doi":"10.1109/AUPEC.2018.8757995","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757995","url":null,"abstract":"Digital Communication is the future of High Voltage (HV) substation automation, protection and control. It not only offer ease of diagnostics but acts fast to isolate healthy feeders from faulty ones. The effect of this digital protection technology is being appreciated by many utilities and industries for the benefit it offers to them and looks to be the future. Some of the utilities are replacing their secondary copper wires with Fibre Optics (FO) and Ethernet wires as they want load the cable trays less and identify the FO better than the secondary copper wires. Conventional relays are being replaced with Intelligent Electronic Devices (IEDs) during asset management replacement program. Switchyard equipment such as instrument transformers filled with oil and SF6 gas are being replaced with Non-Conventional Instrument Transformer (NCITs). Ushering new devices into the network are not without challenges. These devices and peripherals cannot be put into use by the end user without proper assessment and needs to be validated with number of tests for its performances. To get end users acceptance, laboratory and field tests are carried out to study the propagation delays and performance issues as applicable to digital automation and protection scheme. This paper discusses an early detection of the loss of data packets in a star connected Ethernet Substation Automation Systems (SAS). Understanding a real model in a lab environment is an important step towards performance evaluation and identification of issues. With the involvement of multiple manufacturer in the digital substation, it is good to set a trial of the interoperability of equipment involving their products which could address critical protection issues. This paper focuses on a star connected architecture using an Optimized Network Engineering Tool (OPNET) lab-based software simulating the latency and delays of a digital protection scheme in a 132/22-kV zone substation. This paper shares a practical case study of measurement of latencies while exchanging Generic Object-Oriented Substation Event (GOOSE) messages amongst the IED’s passing through peripherals.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134007023","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":"Inclusion of Phasor Measurement Units in Least Measurement Rejected State Estimator","authors":"Farhan Ahmad, I. Habiballah, M. S. Shahriar","doi":"10.1109/AUPEC.2018.8758031","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8758031","url":null,"abstract":"State Estimation is the backbone of a modern electric power system and is employed by most of the Energy Management Systems (EMS) in the world to ensure the real-time monitoring and secure operation of the power system. Phasor Measurement Units (PMUs) are very popular metering equipment in the modern power industry because of its high accuracy and faster refresh rate of measurements. PMUs incorporated with conventional Supervisory control and data acquisition (SCADA) meters can improve the performance of the state estimation. In this paper, phasor measurements (voltage and current phasors) have been modeled into existing Least Measurement Rejected (LMR) estimator to simulate the incorporation of PMU meters. Our work also investigates the importance of locating PMUs at different buses in order to improve the accuracy of state estimation. The performance of proposed approach is investigated in terms of accuracy and computational efficiency in the presence of different bad-data scenarios at IEEE 30 and IEEE 118 bus systems.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"270 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134278637","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":"Short-term Electric Load Forecasting in Microgrids: Issues and Challenges","authors":"H. Marzooghi, K. Emami, P. Wolfs, B. Holcombe","doi":"10.1109/AUPEC.2018.8757874","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757874","url":null,"abstract":"This paper compares performance of three well-known short-term load forecasting (STLF) methodologies in microgrid applications. The chosen methods include: i) seasonal auto-regressive integrated moving average with exogenous variables, ii) neural networks, and iii) wavelet neural networks. These methods utilise combinations of historical load data and metrological variables to predict the load of individual customers in a microgrid over the next day. This is essential for scheduling, management and control of microgrid resources. So far, the existing STLF methodologies have been successfully used for the aggregated load forecasting in transmission and distribution systems. Nevertheless, their prediction accuracy in microgrid applications, where diversity is low and considerable changes in the load of customers can be observed in a short period of time, is not investigated. The random and chaotic nature of individual customers’ loads make STLF challenging; hence, this paper aims to address the issues for the above methodologies in microgrids.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116058797","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":"Defining a remote village typology to improve the technical standard for off-grid electrification system design","authors":"Abhi Chatterjee, Daniel Burmester, A. Brent, R. Rayudu","doi":"10.1109/AUPEC.2018.8757912","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757912","url":null,"abstract":"Access to affordable and clean energy to the rural communities in the developing nations has been the pivotal aim on a global stage. Universal access to reliable and clean electricity to the ever-increasing global population has directed the governmental bodies to switch towards a decentralized energy access approach. However, the efforts of the nodal agencies around the world have not yielded the desired results. A knowledge gap in terms of a village typology that corresponds to an inappropriate electrification system selection has been identified. A suitable typology for remote villages in developing countries is subsequently defined for rural electrification system classification. Also, amendments to the technical standard IEC/TS 62257-2 for rural electrification are suggested, which is decisive in the techno-economic assessments of microgrids in such contexts.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"9 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131751922","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}