2022 International Conference on Power Energy Systems and Applications (ICoPESA)最新文献

{"title":"New Active Detection DC Distribution Network Fault Identification and Ranging Technology","authors":"Chao Zhang, Huaiyu Wang, Jiandong Wang","doi":"10.1109/ICoPESA54515.2022.9754420","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754420","url":null,"abstract":"With the rapid development of new energy power generation technology, the power system's requirements for power supply capacity and transmission efficiency have increased significantly. Facing the continuous development of power electronic technology, a large number of power electronic switching components and dynamic components have been incorporated into the power system. In contrast, DC distribution network has technical advantages over AC distribution network in many fields. As an important part of the DC distribution network, converter has strong nonlinear dynamic characteristics, which will have a serious impact on stable operation. In addition, the fault transient characteristics of power electronic systems are complex and short in duration, which not only limits the application of passive detection and protection technology, but also brings difficulties to the detection and location of faults in distribution lines. Traditional fault classification and ranging methods have a series of problems such as fault resistance, line branch reflection, single judgment of fault interval, and inaccurate fault location. In response to this, this article proposes a converter-based new active detection DC distribution network fault identification and ranging technology. In more detail, this technology uses converter as an active detection method for power electronics DC power supply. First, DC detection signal is injected into the line through the power electronics DC power supply. Then, the fault type signal is identified by detecting the response signal. Finally, the voltage and current spectra obtained by Fourier decomposition are used to calculate the harmonic impedance and perform fault location. This method uses the converter in the DC distribution network, which not only does not require additional equipment, but also is basically not affected by the fault resistance, with the advantages of accurate detection results and fast speed. Moreover, the experimental platform is built to conduct experiments in various failure scenarios to verify the feasibility of the technology.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114863579","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":"Hyperbolic Tangent Exponential Sliding Mode Based Droop Control Operating Parallel Distributed Generation Units in Microgrid","authors":"M. Suleiman, S. Sinan","doi":"10.1109/ICoPESA54515.2022.9754397","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754397","url":null,"abstract":"This paper presents a combination between exponential sliding mode and droop control to enhance the active and reactive power sharing between two parallel inverters in micro-grid mode. The suggested control scheme consists of an inner control loop based on exponential sliding mode and outer control loop based on droop control. Furthermore, the developed method works toward overcoming the stability and robustness issues in the conventional PI- Droop controller. The system under study consists of two parallel 5-level diode clamped inverters to be operated in micro-grid mode connected to a common load. Simulation results are carried out using Matlab/ Simulink, where the suggested controller is compared to other methods to verify its robustness and effectiveness.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125425416","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 Crucial Step of Quantum-dot Cellular Automatic Placement and Routing","authors":"Yangshuai Li, Fei Peng, Gaisheng Li, Guangjun Xie","doi":"10.1109/ICoPESA54515.2022.9754396","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754396","url":null,"abstract":"Quantum-dot Cellular Automata (QCA) is a promising nano-device for next generation integrated circuit. QCA has the characteristics of low power consumption and high operational speed. As the scale and complexity getting larger, automatic placement and routing (P&R) for QCA circuits has attracted the attention of researchers. At present, all the state-of-the-art tools accomplish the P&R work in logic gate level. Although some of them can establish final cell level layout through technology mapping, whether the mapped result contains defects in the sense of circuit design is not considered at all. In this paper, we propose the concept of design rule checking (DRC) of QCA circuit in P&R algorithms for the first time. Four concrete DRC rules are proposed, with the help of which the P&R algorithm can effectively control the positions of inputs, outputs and logic gates, and optimizes various aspects of the circuit such as the number of wire crossings. Experiments show that with the assistance of DRC, correctly functioning cell level layout is far more easily obtained than ever before.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126166271","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 Magnetic Field Analysis for Novel Module Integrated Permanent Magnet Synchronous Motor","authors":"Shijie Yan, Zhiqiang Che, Shuo Li","doi":"10.1109/ICoPESA54515.2022.9754410","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754410","url":null,"abstract":"High power electric machine requires high operational reliability and regular maintenance. To meet such requirements, a novel module integrated structure of permanent magnet synchronous motor is designed and the dynamic mathematical model is established, and the coupled magnetic field of stator winding among multiple modules is analyzed. An integral circular stator can be split into multiple modules, and then these modules are integrated according to design rules to form different module groups. Meanwhile, each module group is able to operate independently. In order to classify and distinguish the integrated modules, the concepts of master-module and sub-module are defined. By integrating multiple sub-modules into one master-module, the coupled magnetic field among multiple master-modules is decoupled. Because the windings in adjacent master-modules are disconnected, the parameters of three-phase windings of different master-modules are unequal. Thus, by phase exchange of the sub-modules, the total length of each phase winding in this master-module is equal and the inductance value of each phase winding is the same. Finally, the coupled magnetic field analysis is carried out by using the finite element method. The experimental results verify the feasibility of the proposed structural for permanent magnet motor.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124959292","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":"Energy Management of Distribution Network in the Presence of Smart Transformers, Soft Open Points, and Battery Energy Storage System","authors":"Abhishek Singh, A. Maulik","doi":"10.1109/ICoPESA54515.2022.9754445","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754445","url":null,"abstract":"In this paper, a multi-objective energy management scheme is proposed to simultaneously reduce the expected cost of operation, improve the voltage stability, minimize the average voltage deviation in a distribution network comprising renewable generation sources (solar and wind), and plug-in hybrid electric vehicle loads. Power electronic converter-based devices like soft open point and smart transformer are controlled in a coordinated fashion to realize the objectives of the energy management strategy. A probabilistic approach models the uncertainties of renewable generation, load, charging power requirement of plugin hybrid electric vehicles, and grid energy price. \"Hong's 2m point estimate method\" is used to incorporate the uncertainties in the optimal power flow. Simulation studies are carried out on a modified thirty-three bus distribution network. Simulation results demonstrate that the proposed probabilistic energy management strategy can reduce the expected cost of operation by ~ 1.48%, improve the voltage stability by at least ~ 27.26%, and reduce the average voltage deviation by at least ~ 77.50%.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121671125","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":"Fundamental Analysis of Grid-Forming Converters Enhanced with Feedforward Controls","authors":"M. Ippolito, R. Musca, G. Zizzo","doi":"10.1109/ICoPESA54515.2022.9754484","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754484","url":null,"abstract":"The grid-forming control for power converters can be enhanced by proper feedforward terms included in the active power control loop. Two basic structures are identified, the feedforward angle and the feedforward frequency. The formal analysis of the transfer functions reveals a structural similarity. The two schemes exhibit however a fundamental difference in their transient capabilities. The grid-forming controls are characterized with the introduction of two specific factors, for the direct assessment of the inertia and the damping which can be provided by the grid-forming converter. The sensitivity analysis of the two feedforward schemes indicates that the enhancement of the transient performances of the control results in a reduction of the inertia synthetically provided by the converter. The results show that the feedforward frequency is significantly more sensitive than the feedforward angle to the feedforward term, and that the feedforward frequency presents a suitable range of damping capabilities but limited possibility of improving the inertial capability. The considerations derived in the analytical investigations are finally verified with a simulation-based application case, implementing a detailed EMT model in the Simscape toolbox of Matlab/Simulink.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126466622","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":"Sequence Impedance Modeling and Stability Analysis of Grid-Connected LCL-type Voltage Source Converter Considering Control Delay and the Frequency Coupling Effect of the SPWM Modulator","authors":"Jinzhu Shi, Lihui Yang","doi":"10.1109/ICoPESA54515.2022.9754467","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754467","url":null,"abstract":"In the modern power system, the penetration level of the LCL-type voltage source converter (VSC) is increasing. Various complicated harmonic oscillation and instability problems are caused by its multi-timescale dynamic characteristic, which is a challenge for the safe and stable operation of the power system. The impedance model based on the traditional state-space average method, which ignores the frequency coupling effect of the SPWM modulator, can only accurately analyze the low-frequency instability. Therefore, to study the wide frequency range oscillation of such system, the frequency coupled impedance model of the LCL-type VSC is established considering control delay and the frequency coupling effect of the SPWM modulator in this paper. And an equivalent decoupled sequence impedance model is derived by the diagonalization method to simplify the stability analysis. On this basis, the grid-connected VSC system stability is investigated. The accuracy of the derived impedance model and the stability analysis results are verified by the time-domain simulation in MATLAB/Simulink.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131824319","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 Novel Hybrid Modulation Strategy for MMC Energy Storage System","authors":"Dongdong Chen, Long Xiao, Wenduan Yan, Yinbiao Guo","doi":"10.1109/ICoPESA54515.2022.9754404","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754404","url":null,"abstract":"To balance the traditional nearest level modulation (NLM) lower switching times and the carrier phase-shift PWM modulation (CPS-PWM) excellent output harmonic characteristics, this paper proposes a novel hybrid PWM modulation strategy (NHPWM). NHPWM can arbitrarily configure the modulation mode of each sub-module, which provides a method for the system to coordinate device loss and output harmonic characteristics in real-time according to requirements. A rigorous mathematical solution method is proposed to accurately analyze the influence of NHPWM mode configuration on the MMC output voltage. Accurate analytical formula for the harmonic distribution of the converter output voltage under different modulation ratios and modulation mode distribution schemes is obtained, proving this kind of hybrid modulation strategy can suppress the low-order harmonics brought by NLM. In addition, the sub-module voltage equalization control method under NHPWM is given. A suitable voltage equalization control effect is obtained through reasonable sub-module working mode configuration combined with the common voltage equalization control method under CPS-PWM and NLM. Finally, the control strategy proposed in the theoretical analysis was verified through simulation and experimental verification.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116543684","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 of Direct and Indirect Current Control of Master-Slave Scheme for Microgrid","authors":"A. Elnady, M. Suleiman","doi":"10.1109/ICoPESA54515.2022.9754458","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754458","url":null,"abstract":"The master-slave control is an important scheme to control the microgrid in both islanded and grid-connected modes. It has been proved that it is competitive to the droop control schemes. This presented paper shows two techniques to control the current/power of the slave inverters to precisely adjust the injected output power of the slave inverters. The adopted microgrid contains two multilevel (five-level diode-clamped) inverters. One inverter is operated as a slave inverter and the remaining inverter is operated as a master inverter. The slave inverter can be operated using two techniques. The slave inverter is operated in a direct current control (DCC) mode using nested multiband hysteresis current control. While the second technique is the indirect current control (ICC) mode through the cascaded structure of power and current loops. Simulation results show a comparative analysis, which affirms that the DCC gives much better performance for current/power control, while the ICC gives a slightly better performance for voltage stabilization at loads.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125787826","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":"Reduction of Total Harmonic Distortion in Distribution System with PV Penetration Utilizing D-STATCOM","authors":"Norsyazana Binti Yusoff, T. J. Hashim, Leong Shu Xuan","doi":"10.1109/ICoPESA54515.2022.9754480","DOIUrl":"https://doi.org/10.1109/ICoPESA54515.2022.9754480","url":null,"abstract":"Over the years, the photovoltaic (PV) energy penetration and the presence of non-linear loads in the distribution system have both risen and will continue to increase rapidly. One of the implications is the harmonic distortion which results in the degradation of electrical components that are connected at the load end. Few custom power devices including Distribution Static Compensator (D-STATCOM) have been determined to enhance the power quality of the supply. The objective of this paper is to evaluate the effect of harmonics in the distribution system and to minimize the percentage of total harmonic distortion (THD) of the source current to be less than 5% for 1 kV systems or below according to the IEEE STD 519-2014 standard limit. This paper employs the D-STATCOM device as the primary component, which demands the use of a specific controller, the Synchronous Reference Frame Theory (SRFT) technique to significantly remove the harmonic contents of the source current. The simulation was modelled utilizing software MATLAB/Simulink R2019a and the percentage of THD was calculated with the Fast Fourier Transform (FFT) analysis window. The findings from simulations indicated that the overall harmonic distortion of supply current has been lowered effectively and are within the allowable range. The source current waveform was enhanced through its sinusoidal waveform manners after the connection of the D-STATCOM device to the system. Regardless of the changes in PV irradiation levels, the outcomes have been achieved with all THD percentage values obtained falls below the required limit for each phase.","PeriodicalId":142509,"journal":{"name":"2022 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"119 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131175215","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}