2022 7th Asia Conference on Power and Electrical Engineering (ACPEE)最新文献

{"title":"Summary of Risk Warning of Electric Power Material Supply Chain","authors":"Zhenyu Zhang, Shuming Feng, Tianmu Hu","doi":"10.1109/ACPEE53904.2022.9784087","DOIUrl":"https://doi.org/10.1109/ACPEE53904.2022.9784087","url":null,"abstract":"The power industry has an important position in the Chinese economy, and the power material supply chain as an important part of the power industry is facing various risks. Therefore, how to effectively carry out the risk warning of the power material supply chain has become an urgent problem to be solved. The current research mainly analyses the sources of risks from the perspectives of management and computer science, and proposes corresponding risk early warning frameworks on this basis. This article combs and summarizes the current research status of risk early warning in the power supply chain, and prospects its future development direction.","PeriodicalId":118112,"journal":{"name":"2022 7th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132535007","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":"Light Scattering Characteristics of Interface Micro-Defects in Factory Joints of High-Voltage Submarine Cables","authors":"Zhenpeng Zhang, Hong-sheng Zhao, Ming-Zhong Xu, J. Zhao, Wenjie Li, Xu Yang","doi":"10.1109/ACPEE53904.2022.9783672","DOIUrl":"https://doi.org/10.1109/ACPEE53904.2022.9783672","url":null,"abstract":"High-voltage submarine cable joint is fabricated by extrusion molding of crosslinked polyethylene materials, in which micrometer-scaled defects cannot be completely eliminated at cone-shaped interface (stress cone) between cable body and recovery insulation. Characterizing interface defects in stress cone area is of great significance to improve submarine cable manufacturing technology. This paper presents a new light-scattering scheme of scanning and detecting interface micro-defects of cable joints, which is suggested to be implemented in joint fabricating process just after factory insulation recovery and before outer shield-layer preparation. According to Mie light scattering theory, we calculate analytically the angle-resolved scattering characteristics of micro-void, water-bead, and antioxidant or carbide micro-particle in polyethylene medium for incident 632.8nm wavelength laser. Since micron-scaled particles scatter light waves into oscillatory characteristics of intensity amplitude due to optical interference, the integral or averaged intensity of the scattered light on a specific angular range should be taken as test signal with a high resolution for distinguishing size or optical properties of micro-defects in polyethylene material. Various micro-defects represent a high intensity in forward scattering, and the scattered intensity integration in 10~30° range increase monotonously with micro-defect enlargement. Especially, lateral scattering strength in 70~100° is remarkably sensitive to refractive index of micro-defects, as manifested by one-magnitude of differences in the averaged scattering intensity between micro-void and micro-antioxidant. It is well suggested that the ratio of scattering intensity integrals in 70~100° to 10~30° ranges can be exploited as a valid criterion for discriminating the species of micro-defects, which is expected to develop 632.8nm Helium-Neon laser scanning test systems of detecting micro-defects in submarine cable factory joints. We also calculate the angle-resolved spectra scattered by micro-defects from light sources of 450~550nm continuous waveband, which are smooth with the amplitude oscillation being significantly alleviated by intensity summation of incoherent waveband components. We suggest exploiting wavelength-averaged angle-resolved spectrum of incident waveband to form a high resolution contrast of scattering strengths, which promises competent applications for laser scanning microscopy or photonic dark-field imaging.","PeriodicalId":118112,"journal":{"name":"2022 7th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132832217","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 Photovoltaics User’s Definition Model Considering Power Control Characteristics","authors":"Xudong Hao, Peifen Cheng, N. Zhou, Kang Zhao, Linlin Ma, Changgang Li, Zhenghua He","doi":"10.1109/ACPEE53904.2022.9784072","DOIUrl":"https://doi.org/10.1109/ACPEE53904.2022.9784072","url":null,"abstract":"With the gradual increase in the scale of distributed photovoltaics connected to power system, especially the promotion of the whole county photovoltaics, the randomness and voltage tolerance capability of distributed photovoltaics have an increasing impact on power system security and stability. At this stage, industrial community and academic community have insufficient understanding of the characteristics of distributed photovoltaics, which will lead to inaccurate distributed photovoltaics models and insufficient simulation calculation accuracy. So this paper investigates the control characteristics of some distributed photovoltaics in practice, especially the voltage tolerance characteristics, and bulids the electromechanical transient models of distributed photovoltaics considering power control characteristics based on PSASP user’s definition module. The distributed photovoltaics user’s definition model established in this paper can realize the function of reducing and recovering the power according to the specified slope during the voltage drop or recovery, and the function of cutting machine can be simulated in this model. The accuracy and rationality of this model can be verified by the example in this paper.","PeriodicalId":118112,"journal":{"name":"2022 7th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133215229","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":"Calculation of reactive power requirement for voltage improvement at Mardan station","authors":"Salman Khan, Arsalan Masood, Sohail Khan, Arqum Shahid","doi":"10.1109/ACPEE53904.2022.9783711","DOIUrl":"https://doi.org/10.1109/ACPEE53904.2022.9783711","url":null,"abstract":"Power stations require a stable voltage profile to operate the power system securely. In case of any contingency voltage profile can worsen quickly and its improvement is of paramount importance. Therefore, precise calculations of reactive power adjustments required to improve voltage profile should be done. In this paper, an actual case study of 220 kV Mardan substation in Pakistan is considered, where estimations of reactive power requirement are presented. The study demonstrates the required reactive power adjustment to maintain voltages following established standards from the country’s electric power regulatory authority. The estimated calculations are presented for both normal operating conditions and contingency situations. This paper suggests grid augmentation to resolve network violations issues and presents a calculation comparison of the existing system with the anticipated system after grid augmentation.","PeriodicalId":118112,"journal":{"name":"2022 7th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133267695","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":"Evaluation of Elasticity of Supply Capability of Distribution Network","authors":"Zhihao Li, Xuesong Zhang, Chouwei Ni, Qing Qin, Bei Han, Guojie Li","doi":"10.1109/ACPEE53904.2022.9783989","DOIUrl":"https://doi.org/10.1109/ACPEE53904.2022.9783989","url":null,"abstract":"There are many uncertain factors in the distribution network, such as random fluctuations of generators or loads, disturbance of extreme events, etc. These uncertain factors influence the normal operation of the system and the supply capability after disturbance, and affect the supply capability quality of the load. In the context of the development of smart distribution network, the distribution network needs to have good supply capability elasticity in a stable operation state. In this paper, a mechanical mapping model is constructed, and the supply capability elasticity of the distribution network is evaluated based on the response process of the distribution network when the load or generator output changes.","PeriodicalId":118112,"journal":{"name":"2022 7th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133291382","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":"Feasibility of incorporating FACTS devices and DG to optimize the performance of Pakistan's transmission network: A case study","authors":"Hussain Haider, G. I. Rashed, Yang Jun","doi":"10.1109/ACPEE53904.2022.9783901","DOIUrl":"https://doi.org/10.1109/ACPEE53904.2022.9783901","url":null,"abstract":"Limited resources and environmental regulations have led to significant increases in power usage during the last few years in Pakistan. Thus, a lack of system stability is a limiting issue in power transfer due to some transmission lines being excessively overloaded in the network. The main goal is to enhance the infrastructural improvements in transmission that have been made possible by integrating Flexible AC transmission systems (FACTS) and distribution generators (DGs). These improvements have helped reduce the complexities caused by power losses and voltage stability issues in the transmission network. By incorporating DGs and UPFC devices into transmission networks, this research delivers voltage increase as well as power fatalities in transmission networks. With the use of actual data for analysis and simulations using the NEPLAN simulator, we developed Midway Node UPFC modeling for a 132kV transmission network that transfers power to the Quetta Electric Supply Company (QESCO) network. Simulating UPFC and DGs in the transmission network helps examine the changes in voltage profiles and power losses in four different scenarios. Furthermore, it lowers the overall transmission losses while simultaneously enhancing the overall transmission efficiency.","PeriodicalId":118112,"journal":{"name":"2022 7th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133292930","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":"Two-stage Robust Optimization Dispatching with Ultra-high Proportion of Electricity-receiving Based on Economic Operation Region Model","authors":"Wen Hua, Wei Dong, Bolong Shi, Zhe Chen, Chuangxin Guo","doi":"10.1109/ACPEE53904.2022.9784001","DOIUrl":"https://doi.org/10.1109/ACPEE53904.2022.9784001","url":null,"abstract":"With the acceleration of the process of energy transformation, a large amount of electricity is transmitted across regions through interconnection lines, and some receiving-end grids show the characteristics of high proportion of electricity receiving. The definition of economic operation region is given from the perspective of multiple scenarios. Based on two-stage robust optimization, a modeling method of economic operation region is proposed, and its applicable scenarios are analyzed. The proposed model can be solved by nested column constraint generation algorithm. From the point of view of the flexibility of system operation, the characteristics of power grid operation under ultra high proportion of electricity receiving are analyzed. Case studies on IEEE-39 test system show that the proposed economic operation region can quantitatively and intuitively reflect the impact of renewable energy uncertainty on scheduling and provide guidance for economic operation. By equipping the system with energy storage and implementing price-based demand response, the consumption level of renewable energy can be significantly improved, which can greatly alleviate the problem of insufficient flexibility of power grid with ultra-high proportion of electricity receiving.","PeriodicalId":118112,"journal":{"name":"2022 7th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134464111","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":"Stability Analysis and Impedance Reshaping Control of Medium-Frequency Oscillation in a PMSG-based Wind Farm Connected to a VSC-HVDC","authors":"Kun Sun, Dahu Li, W. Yao, Yi Zhou, J. Wen","doi":"10.1109/ACPEE53904.2022.9784007","DOIUrl":"https://doi.org/10.1109/ACPEE53904.2022.9784007","url":null,"abstract":"It is well known that the permanent magnet synchronous generator (PMSG)-based wind farm may face the sub-synchronous oscillation (SSO) or high frequency oscillation (HFO) issue. However, the medium frequency oscillation (MFO) may also exist in a PMSG-based wind farm when integrated with a voltage source converter based HVDC (VSC-HVDC). In this work, to investigate the mechanism and characteristics of MFO, the impedance model of the interconnected system is derived. Furthermore, the influence of the control parameters of both PMSG and VSC-HVDC on MFO is analysed with an accurate criterion based on the single input single output (SISO) equivalent sequence impedance. And the theoretical analysis is verified by simulation. Finally, an impedance reshaping control for MFO is proposed. The results show that MFO can be suppressed with the appropriate virtual impedance installed in the wind farm VSC (WFVSC) station, which is meaningful for the actual project.","PeriodicalId":118112,"journal":{"name":"2022 7th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133100416","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":"Investment value evaluation of energy internet business based on TOPSIS method","authors":"Anbang Xie, Peng Li, Yongle Zheng, Hongkai Zhang, Huixuan Li","doi":"10.1109/ACPEE53904.2022.9783970","DOIUrl":"https://doi.org/10.1109/ACPEE53904.2022.9783970","url":null,"abstract":"Energy is a source of power for economic and social development and the material basis for human survival. In recent years, rapid economic development has contributed to the continuous growth of energy consumption in China. However, the massive consumption of energy has seriously affected energy sustainability and the living environment. At the same time, international emissions commitments and energy security issues have prompted China to prioritise energy consumption management. The range of issues arising from energy consumption has become a major concern for the country. The Internet of Energy business, with its ability to improve energy efficiency and reduce carbon emission levels, has become a major focus of investment in recent years. In this paper, 11 indicators were first selected from four dimensions: economic value, social value, environmental value and strategic value. Then, the weights of each indicator were determined by the AHP-entropy weighting method. Finally, the TOPSIS method was used to evaluate the value of energy internet business investment.","PeriodicalId":118112,"journal":{"name":"2022 7th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115506462","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 Energy Double-layer Consumption Method Based on Orderly Charging of Electric Vehicles and Electricity Price Interaction","authors":"Hongxia Ma, Li Lai, Jianyu Sun","doi":"10.1109/ACPEE53904.2022.9783654","DOIUrl":"https://doi.org/10.1109/ACPEE53904.2022.9783654","url":null,"abstract":"With the new energy access to distribution network, the problem of new energy consumption becomes more and more obvious. Electric vehicle load has transferable characteristics, and it is helpful to realize new energy consumption by using electricity price guidance. However, at present, the above aspects have not been considered in electricity price formulation, and the interaction between electric vehicle (EV) response and electricity price has not been considered. To solve this problem, in this paper, a new energy double-layer consumption method based on orderly charging of EV is put forward. Firstly, the EV load model is established, and then the electricity price model considering the fluctuation of new energy is established as the initial price curve of electric vehicle orderly charging which will be updated later according to the response of electric vehicle. Then the papwer establishes a new energy double-layer consumption model, the upper layer takes the maximum consumption of new energy as the goal, and optimizes the electricity price as the independent variable, and transmits the optimized electricity price result to the lower layer; The lower layer aims at maximizing the profit of EV, and optimizes the number of EVs participating in the response as a variable, and returns the number of electric vehicles to the upper layer, and iterates circularly until the best result is obtained. Finally, taking the improved IEEE 33 power grid as case, the results mean that the method mentioned can greatly improve the new energy consumption.","PeriodicalId":118112,"journal":{"name":"2022 7th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114199858","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}