Yinsheng Su, Qingming Xin, Xiaobin Zhao, H. Xie, Hongtao Liu, Rinbin Cao, Long Guo, Junjie Feng
{"title":"Modeling and Application of wide-frequency Model for Harmonic analysis of HVDC System","authors":"Yinsheng Su, Qingming Xin, Xiaobin Zhao, H. Xie, Hongtao Liu, Rinbin Cao, Long Guo, Junjie Feng","doi":"10.1109/ACPEE56931.2023.10136024","DOIUrl":"https://doi.org/10.1109/ACPEE56931.2023.10136024","url":null,"abstract":"The wide-frequency model of HVDC system is an important tool to study the harmonic and interference characteristics in wider frequency band. The actual structure of HVDC key equipment are studied, and the influence of its stray parameters on the wide-frequency model is analyzed, taking into account inter-turn stray capacitor and skin effect at high frequencies of converter transformer and smoothing reactor, wide-frequency model of key equipment is established, and compare it with the measured resistance-frequency characteristic curve to prove the accuracy of wide-frequency model. Based on the wide-frequency model of key equipment, wide-frequency model of HVDC system is established, and the harmonic characteristics are compared with common model and the measured waveforms. The results show that the wide-frequency model can reflect the harmonic characteristics more accurately, and the accuracy and validity of the model are also verified.","PeriodicalId":403002,"journal":{"name":"2023 8th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126605160","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 Digital Twin System and Modeling Method for All-in-one Station Grounding System","authors":"Yongjun Wu, Liang Xie, Hongjun Zhang, Menglong Qin, Ruitian Fan, Xing Lei","doi":"10.1109/ACPEE56931.2023.10136016","DOIUrl":"https://doi.org/10.1109/ACPEE56931.2023.10136016","url":null,"abstract":"At present, the electric power system is under great operational pressure, especially in terms of grounding technology for electrical equipment, because grounding technology belongs to a class of traditional technical methods in electrical equipment, so the operation level of grounding technology is improved in order to maintain the effectiveness of electrical equipment in grid planning. To address this issue, this paper proposes an all-in-one station grounding system after analyzing the actual situation, analyzing and integrating multiple grounding technologies and establishing a model through digital twin technology. Firstly, through the interaction between the physical system of grounding network and the digital twin system, the all-in-one station grounding network information model is applied in the whole life cycle of the whole link. Then, the fusion of offline data, online data and simulation data is realized and utilized to realize grounding network situational awareness, abnormal state diagnosis and trend prediction. Finally, the digital twin model of grounding network is established. Simulation is verified.","PeriodicalId":403002,"journal":{"name":"2023 8th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127017057","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}
Qian Chen, Ming Chen, Guangyuan Yang, Lingfei Li, Qingming Xin, Huan Li
{"title":"An Optimization Model of HVDC Transmission System Reliability Improvement Measures Based on Cost-Benefit Analysis","authors":"Qian Chen, Ming Chen, Guangyuan Yang, Lingfei Li, Qingming Xin, Huan Li","doi":"10.1109/ACPEE56931.2023.10135968","DOIUrl":"https://doi.org/10.1109/ACPEE56931.2023.10135968","url":null,"abstract":"With the continuous expansion of HVDC transmission system scale penetrating renewable energy, it is necessary to make an accurate investment decision considering HVDC transmission system reliability improvement measures. This paper proposes an optimization model using Life-Cycle Cost (LCC) theory for reliability improvement measures, and an optimization ranking algorithm based on marginal benefit. Firstly, the cost-benefit analysis of power system reliability based on LCC is established to evaluate the system reliability of the HVDC transmission system. Then, the reasonable reliability improvement measures are determined through cost-benefit analysis in order to improve the reliability. Finally, the method proposed in this paper is validated by case study. The results can provide scientific support for the reliability, economy and operation decisions of the HVDC transmission system.","PeriodicalId":403002,"journal":{"name":"2023 8th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":"105 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115522557","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}
Kan Yang, Wenxin Qiu, Z. Lan, Xin Fang, Hengjian Fan
{"title":"Cost Allocation of Energy Storage based on Cost Causation and Cooperative Game","authors":"Kan Yang, Wenxin Qiu, Z. Lan, Xin Fang, Hengjian Fan","doi":"10.1109/ACPEE56931.2023.10135891","DOIUrl":"https://doi.org/10.1109/ACPEE56931.2023.10135891","url":null,"abstract":"A complex problem in the new power system is the uncertainty and variability of renewable energy resources. With the rapid development of user-side distributed generation technology, it has become an important development trend to improve the reliability and economy of community energy use by configuring energy storage. This paper studies the energy storage sharing model of multi-agent cooperative investment in community. To maximize the economic benefit and fairness, this paper considers the ES cost allocation via cost causation and coalition game. Based on the principle of cost causation, this paper improves the traditional Shapley value model. Cost causation is a commonly used principle for considering fairness and has a long tradition in power system. We applied the improved Shapley value method to equitably distribute the energy storage costs among the main bodies of communities. The fairness and computational efficiency of the method were proved by the case study. The improved Shapley model reduced the computation amount and ensured the fairness versus the exponential information required by Shapley model.","PeriodicalId":403002,"journal":{"name":"2023 8th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115559353","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}
Xianling Fu, Jiaqing Zhang, Yubiao Huang, Yi Guo, Fengju Shang
{"title":"Experiment and strategy research on combined use of water spray and compressed air foam fire extinguishing system for UHV converter transformer","authors":"Xianling Fu, Jiaqing Zhang, Yubiao Huang, Yi Guo, Fengju Shang","doi":"10.1109/ACPEE56931.2023.10135626","DOIUrl":"https://doi.org/10.1109/ACPEE56931.2023.10135626","url":null,"abstract":"The cold spray test of water spray fire extinguishing system, compressed air foam cannon fire extinguishing system and combined fire extinguishing test were carried out based on a scaled platform. The cold spray test results show that most of the water spray will be directly incorporated into the compressed air foam, and the defoaming effect of the water spray on the compressed air foam is limited. The combined fire extinguishing test shows that the water spray fire extinguishing system and the compressed air foam fire extinguishing system can achieve effective fire extinguishing under different fire extinguishing sequence conditions, and the two fire extinguishing systems can be used simultaneously in dealing with transformer oil fire. The comprehensive cooling effect of the dual system is better than that of a single system. Combining the actual characteristics and requirements of the converter station, a combination strategy of fire extinguishing system that suitable for the converter station is further proposed.","PeriodicalId":403002,"journal":{"name":"2023 8th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122145171","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":"Failure Mode Analysis and Reliability Improvement of Compressed Air Foam System","authors":"Yi Guo, Tiantian Tan, Jiaqing Zhang, Jia Xie, Yubiao Huang, Fengju Shang","doi":"10.1109/ACPEE56931.2023.10136010","DOIUrl":"https://doi.org/10.1109/ACPEE56931.2023.10136010","url":null,"abstract":"In this paper, failure mode and effect analysis (FMEA) based on bayesian method is used to identify the failure modes of fixed compressed air foam system(CAFS) and key components in ultra-high voltage(UHV) converter station. Firstly, the failure mode and effect of the fixed CAFS are analyzed, and the risk priority number (RPN) is introduced to quantify the possibility and severity of the failure. For the calculation of fault occurrence frequency (O) in RPN, Bayesian estimation method is introduced for quantitative calculation. In the calculation, first convert and fuse the multiple prior information, then test the prior information and calculate the weight. The failure rate of the fixed compressed air foam fire extinguishing system and its components can be calculated by this method. It is helpful to identify the components that need to improve safety and reliability, and propose effective improvement measures for the system components.","PeriodicalId":403002,"journal":{"name":"2023 8th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116850622","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}
Xing Meng, Wei Yingli, Wang Yan, Tang Fan, Luan Shiyan, Jia Yafei, Sun Hao, Zhao Beibei
{"title":"Transmission Line Sag Measurement Algorithm Based on Binocular Vision 3D Reconstruction","authors":"Xing Meng, Wei Yingli, Wang Yan, Tang Fan, Luan Shiyan, Jia Yafei, Sun Hao, Zhao Beibei","doi":"10.1109/ACPEE56931.2023.10135751","DOIUrl":"https://doi.org/10.1109/ACPEE56931.2023.10135751","url":null,"abstract":"Transmission line is the key component of the power system, and its working condition is very important for the safe operational aspect of the power system. Transmission line inspection plays an essential role in ensuring the power system can be operated safely, reliably, effectively. With the escalation of the scale of the national power system, the demand for inspection of power transmission lines is gradually increasing. Due to the shortcomings of traditional human inspection, such as time-consuming, laborious, and not strong real-time, UAV electric inspection develops rapidly. As an important index for the security and reliability operation of transmission lines, the size of sag directly affects the security and stableness of transmission lines, so it’s an essential part for UAV inspection to measure sag. This research studied the sag measurement of transmission lines by relying on the UAV platform, with the baseline of the requirements of transmission line inspection. On the basis of image preprocessing, this paper adopts the method based on 3D reconstruction, introduces the camera calibration method to obtain parameters, calculates the 3D coordinates of the highest point of the tower and the lowest point of the line in the image from the pixel coordinates, and finally calculates the sag value according to the concept of the sag. Compared with traditional measurement methods, this study has smaller error, less calculation and more convenient measurement.","PeriodicalId":403002,"journal":{"name":"2023 8th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129626324","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 Wide Input High Gain DC-DC Converter","authors":"Mengjie Wu, Xiaosan Ma, J. Xu","doi":"10.1109/ACPEE56931.2023.10135742","DOIUrl":"https://doi.org/10.1109/ACPEE56931.2023.10135742","url":null,"abstract":"DC-DC converters are typically required in fuel cell vehicles to boost the output voltage to match the bus voltage. To obtain the high utilization of fuel cell, the general practice is to reduce the voltage stress on the switching transistors and the ripple of the output voltage. Based on the Boost topology and Buck-Boost topology. The converter adds a capacitance multiplier unit to the post-stage circuit to obtain a higher output voltage with a corresponding reduction in voltage stress on the switching transistors. At first, the operating principle of the converter in both operating modes is studied. Then, the components in its circuit are designed. Simulation experiments using MATLAB software, the final result can prove that the converter can improve the voltage gain.","PeriodicalId":403002,"journal":{"name":"2023 8th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129757170","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}
Xiao Xiong, Ge Zaihui, C. Zhiming, Sun Siyang, Meng Wenchuan
{"title":"A Coordinated Trading Mode of Wind-Thermal-Pumped Storage Units In Electricity Spot Market and Regulation Market","authors":"Xiao Xiong, Ge Zaihui, C. Zhiming, Sun Siyang, Meng Wenchuan","doi":"10.1109/ACPEE56931.2023.10135895","DOIUrl":"https://doi.org/10.1109/ACPEE56931.2023.10135895","url":null,"abstract":"In the process clean and low-carbon power systems construction, an increasing proportion of wind turbines participate in the power market, but the randomness of its output will bring great market risks. To reduce the risks, wind power, thermal power, pumped storage units, and other regulatory facilities would jointly participate in the power market. How these participants obtain more benefits under coordination has become a research focus. This paper proposes a stochastic optimization model for wind-thermal-pumped storage units cooperatively participate in day-ahead power market and frequency modulation(FM) market. In both markets, these participants are required to declare the next-day generation outputs, bidding prices, and the available generation capacity that can be used for frequency modulation. The model considers the statistical characteristics and correlations of wind power outputs between different periods and proposes a scenario reduction method. In addition, the model also introduces a CVaR risk control method for market electricity price, wind generation output, FM mileage and other uncertainties. In addition, the model also introduces the CVaR risk control method for market electricity price, wind power output, FM mileage and other uncertain factors, and simulates the situation of different participants in the market under different risk appetites. The experimental results show that the stochastic optimal bidding strategy with risk control is effective under uncertain conditions.","PeriodicalId":403002,"journal":{"name":"2023 8th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129870650","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}
Congcong Li, Yi Tang, Yudun Li, Jing Li, Rongqi Fan, Fangfang Shi
{"title":"Automatic Setting Method of Relay Protection Device Based on Self-description of Setting Value","authors":"Congcong Li, Yi Tang, Yudun Li, Jing Li, Rongqi Fan, Fangfang Shi","doi":"10.1109/ACPEE56931.2023.10135566","DOIUrl":"https://doi.org/10.1109/ACPEE56931.2023.10135566","url":null,"abstract":"The protection setting is the key to determine the correct action of the relay protection, which directly affects the action of the protection device. The automatic calculation of the settings based on the self-describing file is adopted to complete the automatic matching and interaction between the setting calculation system and each setting value of the field relay protection device, the relay protection device can automatically generate a setting file template, then upload it to the setting computing system through the relay protection technical support system. The traversal matching method with improved editing distance is used to achieve automatic and accurate matching of fixed value items. The complete set value generated by the setting calculation is loaded into the setting template file to form a new setting file. After receiving the setting file from the setting calculation system, the protection device first verifies the data fingerprint of the setting file and completes the automatic setting after ensuring the accuracy of the setting file. This process avoids the \"wrong setting\" behavior of the traditional setting value notification, such as the wrong number and manual setting, and ensures the correctness of the setting value execution.","PeriodicalId":403002,"journal":{"name":"2023 8th Asia Conference on Power and Electrical Engineering (ACPEE)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128447500","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}