{"title":"A novel method to differentiate a fault from power swing using impedance angle rate","authors":"Aldrich Zeno","doi":"10.1109/APPEEC50844.2021.9687684","DOIUrl":"https://doi.org/10.1109/APPEEC50844.2021.9687684","url":null,"abstract":"Proper discrimination of a fault from power swing is a challenge due to the similar variations in impedance observed by a distance relay in transmission lines. This article proposes a novel scheme to differentiate a fault from power swing using impedance angle and rate of change of impedance angle. A simple power system was chosen to understand the locus of impedance angle and rate of change of impedance angle. The situations considered include normal operation, stable swings for different power factor, stable swing for different swinging amplitude/frequency, unstable swing and faults during power swing. Based on the variation in impedance angle, regions were demarcated to indicate tripping region, restraining region, marginal stability and unstable regions.","PeriodicalId":345537,"journal":{"name":"2021 13th IEEE PES Asia Pacific Power & Energy Engineering Conference (APPEEC)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121653228","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":"Long Short-Term Memory Recurrent Neural Network (LSTM-RNN) Power Forecasting","authors":"Maha S. Alsabban, Nema Salem, Hebatullah M. Malik","doi":"10.1109/APPEEC50844.2021.9687681","DOIUrl":"https://doi.org/10.1109/APPEEC50844.2021.9687681","url":null,"abstract":"The geographical position of the Kingdom of Saudi Arabia has significant potentials for utilizing renewable energy resources, which aligns with the country's vision for 2030. This paper proposes a solution to achieve energy sustainability by forecasting future load demands through adopting three different scenarios. We used the outsourced Individual Household Electric Power Consumption Dataset, University of California-Irvine repository, for testing our proposed system. We utilized the Long Short-term Memory-Recurrent Neural Network (LSTM-RNN) algorithm to estimate the whole house power consumption for different horizons: every 15 minutes, daily, weekly, and monthly. Next, we evaluated the performance of the system by Mean Absolute Error (MAE), Mean Squared Error (MSE), Root Mean Square Error (RMSE), and $R^{2}$ score metrics. Then, we applied the Mean Absolute Percentage Error (MAPE) to find its accuracy. The results showed that the monthly forecasting interpretation scenario was the best performing model. That scenario used (n-1) months for training and the last month for testing. The scores for that model were 0.034 (MAE), 0.001 (MSE), 0.034 (RMSE), and 97.16% (accuracy). The constructed model successfully achieved its goals of predicting the active power of the household and now can be accommodated on energy applications not only in Saudi Arabia but also in any other country.","PeriodicalId":345537,"journal":{"name":"2021 13th IEEE PES Asia Pacific Power & Energy Engineering Conference (APPEEC)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131253474","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":"Research on dynamic characteristics of inverter when fault occurs in HVDC receiving end equipped with synchronous condenser","authors":"L. Luo, Tao Pang","doi":"10.1109/APPEEC50844.2021.9687711","DOIUrl":"https://doi.org/10.1109/APPEEC50844.2021.9687711","url":null,"abstract":"High voltage direct current (HVDC) is more and more widely used in the world. Its grid connection brings stability problems to the traditional AC power grid. As a common fault of HVDC, commutation failure usually occurs at the receiving end. In this paper, the typical circuit structure and control strategy of HVDC are used to analyze the dynamic characteristics of inverter to AC side fault of receiving end under different transmission power, and the influence of Synchronous condenser (SC) and filter compensation device (FC) on AC side fault of receiving end is analyzed. Finally, based on the parameters of Jiuquan Hunan HVDC transmission project, the correctness of the analysis is verified by simulation on PSCAD / EMTDC.","PeriodicalId":345537,"journal":{"name":"2021 13th IEEE PES Asia Pacific Power & Energy Engineering Conference (APPEEC)","volume":"241 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132677758","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 generator modelling and excitation voltage control for GIC studies","authors":"Pitambar Jankee, D. Oyedokun, H. Chisepo","doi":"10.1109/APPEEC50844.2021.9687728","DOIUrl":"https://doi.org/10.1109/APPEEC50844.2021.9687728","url":null,"abstract":"Geomagnetically Induced Currents (GIC) have very low-frequency characteristics and can disturb power system dynamics. The steady-state responses of transformers to GIC modelled as dc equivalent currents are well documented, but the dc simplification may not be representative. In this study, we use a more realistic 20 mHz ac GIC. We have not found any studies focusing on the dynamic response of synchronous generators with GIC. Generator models are complex having several parameters but are often simplified as ac equivalent sources without any representation of their field flux. We present a methodology for including synchronous generator models in dynamic GIC studies. A 4-bus power system was modelled in MATLAB/Simulink and the responses of an ideal and non-ideal ac electrical equivalent generator model are compared against full synchronous machine models having excitation and turbine/governor systems. The results imply that careful considerations are needed when modelling the source generators and that volt drop mitigation may be possible during geomagnetic disturbances when excitation system controls are optimized.","PeriodicalId":345537,"journal":{"name":"2021 13th IEEE PES Asia Pacific Power & Energy Engineering Conference (APPEEC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115840364","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 Consideration of non-linear dielectric response of water-treed XLPE cable insulation","authors":"Priya Selvamany, G. Varadarajan","doi":"10.1109/APPEEC50844.2021.9687734","DOIUrl":"https://doi.org/10.1109/APPEEC50844.2021.9687734","url":null,"abstract":"Water tree is one of the most important insulation degradations and becomes a worldwide problem in an underground power cable. The water-treed XLPE sample consists of two layers: the non-degraded and the water treed layer equivalent circuit, used to evaluate the relative permittivity and dielectric loss factor. The conduction current estimation of XLPE film samples with water treeing was modeled by using the finite element method by applying 1 kV AC voltage. The dielectric response gives information about the physical and chemical structure of the insulation material. In order to cause the aging process to have a physical and/or chemical effect on the insulating material, the change in the polarization phenomenon can be used to track the deterioration of the insulation.","PeriodicalId":345537,"journal":{"name":"2021 13th IEEE PES Asia Pacific Power & Energy Engineering Conference (APPEEC)","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116195975","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}
M. Aguirre-Velasco, M. Saltos-Rodríguez, A. Velásquez-Lozano, D. Ortiz-Villalba
{"title":"Optimal Sizing and Placement of Battery Energy Storage System for Resilience Enhancement in Power Distribution Systems Against Volcanic Eruptions","authors":"M. Aguirre-Velasco, M. Saltos-Rodríguez, A. Velásquez-Lozano, D. Ortiz-Villalba","doi":"10.1109/APPEEC50844.2021.9687760","DOIUrl":"https://doi.org/10.1109/APPEEC50844.2021.9687760","url":null,"abstract":"High-impact and low-probability (HILP) events such as natural hazards have changed how the power distribution systems (PDSs) are designed and operated. The traditional reliability framework ignores the catastrophic effects of the HILP events on PDSs. Accordingly, the resilience concept is becoming more critical to developing strategies to mitigate those effects. This paper proposes a novel methodology for resilience enhancement on PDSs against volcanic eruptions. The proposed methodology evaluates the PDSs performance against lahars occurrence and its impact on the PDS infrastructure. The proposed approach allows planning and operating battery energy storage systems (BESS) to reduce the energy not supplied (ENS) during the system recovery. The methodology includes Monte-Carlo simulation method (MCS) and a stochastic optimization model. Our proposal is implemented on the IEEE 37-node test feeder and in a feeder operated by ELEPCO S.A in Ecuador. This feeder departs from the San Rafael substation to the Salcedo substation, which is vulnerable to the impact of a lahar in a possible eruption of the Cotopaxi volcano. The results show that the optimal sizing and placement of BESS can reduce the ENS against volcanic eruptions.","PeriodicalId":345537,"journal":{"name":"2021 13th IEEE PES Asia Pacific Power & Energy Engineering Conference (APPEEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125455466","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":"Aggregation of DERs like Air Conditioners for Virtual Power Plant, based on IEEE 1547 Standards Family","authors":"M. Umejima, S. Manickam","doi":"10.1109/APPEEC50844.2021.9687690","DOIUrl":"https://doi.org/10.1109/APPEEC50844.2021.9687690","url":null,"abstract":"We live in a very connected world. As the world gets even more connected with the proliferation of connected devices, i.e., Internet of Things (IoT), a paradigm shift will happen in an electric utility system that relies on the mandatory balance of demand and supply. Balancing capabilities must be on standby at the power grid network to fulfill this requirement, showing high dependency on large-scale power plants on the supply side. However, Demand-side Energy Management System (D-EMS) accumulate loads like an air conditioner with network access is becoming the catalyst in influencing the design of the demand and supply balancing formula. IEEE 1547 standards family describe that Demand Response (DR) Aggregator acquires balancing capacities by aggregating DR units, namely Virtual Power Plant (VPP). This research presented and verified that aggregation of D-EMSs that refers to the accumulation of loads with network access like air conditioners showing a characteristic of Distributed Energy Resources (DERs), realized VPP with offering scalability. Significantly, the measurement of D-EMS by a smart power meter with the certification of the centralized authority was able to ensure transparency in VPP as a whole system, removing the weakness of a distributed system.","PeriodicalId":345537,"journal":{"name":"2021 13th IEEE PES Asia Pacific Power & Energy Engineering Conference (APPEEC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127518793","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}
Ming Ma, Bin He, Qingquan Lv, Runjie Shen, Honglu Zhu, R. Hou
{"title":"A New Power Forecasting Method for Photovoltaic Plants under Hazy Conditions","authors":"Ming Ma, Bin He, Qingquan Lv, Runjie Shen, Honglu Zhu, R. Hou","doi":"10.1109/APPEEC50844.2021.9687745","DOIUrl":"https://doi.org/10.1109/APPEEC50844.2021.9687745","url":null,"abstract":"Power forecasting has become more and more important for the safe and economic operation of Photovoltaic (PV) plants. In practice, the power generation of PV plants may be affected by haze conditions. To improve the power forecasting accuracy of PV plants under hazy conditions, the Air Quality Index (AQI) is adopted for the power forecasting modeling in the paper. The relationship between the AQI and solar irradiance is analyzed firstly, which indicates that the AQI and solar irradiance have a significant negative correlation. It reveals the weakening effect of haze on solar irradiance. A clear boundary exists in the scatter diagram of the AQI and solar irradiance under different haze conditions which represents the maximum solar irradiance which the PV plant can receive at a moment. Then, a new method is proposed in which the AQI is adopted to correct the solar irradiance from Numerical Weather Prediction (NWP). The corrected NWP solar irradiance serves as an input variable for the Artificial Neural Network (ANN) model. Finally, the measured data is used to compare the different power forecasting methods. The results show that the proposed method can effectively improve the power forecasting accuracy of PV plants under hazy conditions.","PeriodicalId":345537,"journal":{"name":"2021 13th IEEE PES Asia Pacific Power & Energy Engineering Conference (APPEEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129025810","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":"New Simplified Space Vector Modulation for Three Phase Asymmetric Multilevel Inverter with Reduced Switch Count Using One Dimensional Modulator","authors":"Muraly N, Ajay-D-vimal Raj. P, S. P.","doi":"10.1109/APPEEC50844.2021.9687800","DOIUrl":"https://doi.org/10.1109/APPEEC50844.2021.9687800","url":null,"abstract":"The Space Vector Modulation [SVM] technique which is primarily utilized in phase-3 inverters because it delivers greater utilization source, operation based on linear performance and Total Harmonic Distortion (THD). If the inverter supposes to be greater amount of level or greater quantity of phases, the control region representation has become entirely complex also the strategies of SVM has to consider greater amount of switching states. To overcome this simple one-dimensional modulator for a three phase Seven Level Asymmetric Multilevel Inverter (SLAMLI) with reduced components is proposed at present work. The suggested one-dimensional strategy is employed to modulate every stage of the SLAMLI separately, whereas traditional SVM techniques consider the converter as a whole system. The suggested methodology has the benefit of being able to have any topology and any level of authority without providing new complexity. Also, it naturally suppresses the magnitude of Common Mode Voltage (CMV) and keeps it constant without any post processing. This reduced CMV benefits negligible leakage current. Consequently, MATLAB/SIMULINK has to done by means of evaluate the sustainability of the suggested technique.","PeriodicalId":345537,"journal":{"name":"2021 13th IEEE PES Asia Pacific Power & Energy Engineering Conference (APPEEC)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134624827","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}
Fang Liu, Yujia Li, Lei Tao, Xin Xu, Ling-lin Gong, Qiong Feng, Jing Yu, Haiwei Wu, Ming Yang
{"title":"A Cross-regional Peak Shaving Optimization Clearing Model Considering Bilateral Quotation","authors":"Fang Liu, Yujia Li, Lei Tao, Xin Xu, Ling-lin Gong, Qiong Feng, Jing Yu, Haiwei Wu, Ming Yang","doi":"10.1109/APPEEC50844.2021.9687796","DOIUrl":"https://doi.org/10.1109/APPEEC50844.2021.9687796","url":null,"abstract":"In this paper, an intraday market clearing model with the goal of maximizing social welfare for cross regional peak shaving market is established, which considers the bids and offers, and the security of interregional channel, inter provincial channel and provincial power grid. In this model, the seller adopts unit quotation and the buyer adopts demand area quotation, and they all adopt the segment quotation. The effectiveness of the model is verified by an example, the model can realize the clearing of cross regional bilateral peak shaving market, and can effectively solve the scalar quantity of market members and marginal clearing price under the premise of power grid security.","PeriodicalId":345537,"journal":{"name":"2021 13th IEEE PES Asia Pacific Power & Energy Engineering Conference (APPEEC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124097354","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}