{"title":"Study on the Working Mode and Impedance-Based Stability Criterion of Generalized Electric Spring","authors":"Xiaohu Wang, Yubin Duan, Xinyuan Chen, Zhun Huang, Yi Wei, Chaohui Zhao","doi":"10.1109/ICoPESA56898.2023.10140898","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10140898","url":null,"abstract":"When the electric spring (ES) is used in the face of critical load clustering, the repetitive ES parallel structure introduces significant redundancy into the system. To address this issue, this paper further investigates the concept and topology of generalized electric spring(G-ES), analyzes the working model of G-ES, and discusses in depth the working mode of G-ES under the two cases of unidirectional and bidirectional power supply. The control strategy of the G-ES is designed to achieve current feedforward compensation through the load factor. The stability of G-ES is studied based on impedance analysis, and the stability criterion of G-ES under weak grid conditions is given. The results show that there are 100 working modes of the G-ES. The simulations and experiments are conducted to verify the correctness of the control method and stability impedance criterion proposed in this paper.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125751091","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 of Intelligent Monitoring System for Energy Storage Power Station Based on Infrared Thermal Imaging","authors":"Xing Liu, Z. Li, Yuyan Xiao, Qian Wu","doi":"10.1109/ICoPESA56898.2023.10140925","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10140925","url":null,"abstract":"With the rapid development of new energy power generation, clean energy and other industries, energy storage has become an indispensable key link in the development of power industry, and the application of energy storage is also facing great challenges. As an important part of new energy power system construction, energy storage security issues need to be resolved. There are a large number of lithium-ion batteries in the energy storage power station. The thermal runaway of the battery will cause serious safety problems such as combustion explosion. In this paper, an intelligent monitoring system for energy storage power station based on infrared thermal imaging is designed. The infrared thermal imager is used to monitor the operating temperature of the battery pack in the energy storage power station in real time. Once the battery operating temperature exceeds the set threshold, the system can automatically alarm and notify the staff. Through the construction of the system, countermeasures can be taken in the early stage of battery overcharge to avoid further thermal runaway of the battery leading to safety accidents. After experimental testing, the system can effectively monitor the operation of energy storage battery in real time, provide effective support for the early warning of energy storage power station safety accidents, and ensure the long-term safe and stable operation of energy storage power station.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130692454","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}
Yunxiang Tian, Liuwei Xu, Yanan Wu, Jing Lu, Jun Li, H. Mao, Haiyang Liu, S. Zhao
{"title":"Study on Cascaded STATCOM with Energy Storage Applied for Impulse Power Compensation","authors":"Yunxiang Tian, Liuwei Xu, Yanan Wu, Jing Lu, Jun Li, H. Mao, Haiyang Liu, S. Zhao","doi":"10.1109/ICoPESA56898.2023.10140269","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10140269","url":null,"abstract":"Megawatt power impact frequently occurs during operation of industrial devices, which shows the features of high amplitude and strong randomness. Cascaded static synchronous compensator with battery energy storage system (STATCOMBESS) is a promising approach to solve the power impact problem. Cascaded STATCOM-BESS has advantages of large single-machine capacity and rapid response, however, which is not yet mature for industrial application. Aiming at this issue, study on cascaded STATCOM-BESS is conducted in this paper, comprising the parameters calculation and selection for cascaded static synchronous compensator (STATCOM), boundary capacity analysis and battery module number determination for battery energy storage system (BESS). Finally, the simulation results based on PSCAD/EMTDC validate effectiveness and correctness of the analysis and design for crucial parameters of STATCOMBESS, which can provide high-amplitude impulse active (1.5MW) and reactive power (2MVar) simultaneously after operation of STATCOM-BESS at 0.5s.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133930402","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}
Jian Ye, Huanyu Guo, Sen Mei, Yingjie Hu, Xinan Zhang
{"title":"A TD3 Algorithm Based Reinforcement Learning Controller for DC-DC Switching Converters","authors":"Jian Ye, Huanyu Guo, Sen Mei, Yingjie Hu, Xinan Zhang","doi":"10.1109/ICoPESA56898.2023.10141314","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10141314","url":null,"abstract":"Various linear and nonlinear controllers have been developed to improve the dynamic performance of DC-DC converters. Most controllers can only be designed on the basis of understanding the mathematical model of DC-DC converter, but the inherent nonlinear and time-varying characteristics of DC-DC switching converter make it difficult to complete the precise modeling, so the model-based control design is complex and the control performance is limited. In order to overcome the problem, this paper proposes a reinforcement learning (RL) controller based on the twin-delayed deep deterministic policy gradient (TD3) algorithm. This controller does not need the model of the switching converter. The converter will be regarded as a black box model, the policy approximation function (policy neural network) can be trained and learned by constructing a Markov decision process interacting with the black box model in the control system, and the optimal control action can be output. The RL controller is developed based on actor critic architecture, and a TD3 algorithm with higher learning efficiency is proposed to improve the control performance of the RL controller. The proposed RL controller based on TD3 algorithm is compared with the traditional PI controller. The simulation results show that the RL controller has better dynamic performance when the converter starts and the load step changes.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"499 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134453111","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":"Airports Integrated Multi-energy Complementary Energy System Design and Multi-scenario Application Analysis","authors":"Q. Jia, Jing Yu, Zan Tao","doi":"10.1109/ICoPESA56898.2023.10141512","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10141512","url":null,"abstract":"The use of traditional energy has brought severe environmental pollution and carbon dioxide emissions to the airport. To change the situation, airports are actively introducing renewable energy sources such as photovoltaics to provide additional power to the airports. However, the intermittent nature of photovoltaic power generation reduces the reliability of its power supply and restricts his application in airports. This study proposes a multi-energy complementary energy supply system design method based on photovoltaic and geothermal, which accurately predicts the energy consumption of airports through in-depth mining of airport energy consumption data. Combined with the prediction results, the optimal size configuration of the energy system under two scenarios of isolated and grid-connected operation, as well as its economic and environmental benefits, is given by evaluating the amount of energy supplied by photovoltaic and geothermal at the airport.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129432192","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 Efficiency Analysis of Ultra-Supercritical Thermal Power Plant Based on Aspen Plus Modeling","authors":"Zhiyuan Wang, Chao Zhang","doi":"10.1109/ICoPESA56898.2023.10141439","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10141439","url":null,"abstract":"At present, ultra-supercritical power plant is the most advanced technology, which can achieve ultra-low pollutant emissions and greatly improve the energy efficiency of power plants. From the perspective of energy balance and exergy balance, the normal and ultra-supercritical units are compared. In addition, the control variables method is used to observe the changes in boiler efficiency, power generation efficiency, barnstorming efficiency, and CO2 emissions of the entire thermal power plant by varying the exhaust temperature, supply fan inlet temperature, and main steam temperature. Besides, the energy-saving mechanism of ultra-supercritical thermal power generation is pointed out: Ultra-supercritical units have lower exhaust temperatures, higher supply fan inlet temperatures and higher main steam temperatures.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133015415","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":"ICoPESA 2023 Cover Page","authors":"","doi":"10.1109/icopesa56898.2023.10140448","DOIUrl":"https://doi.org/10.1109/icopesa56898.2023.10140448","url":null,"abstract":"","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130076050","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":"An Inductive Power Transfer System with A Clamp Circuit Versus Coupling Variations","authors":"Binshan Zhang, Bin Yang, Zeheng Zhang, Yang Chen","doi":"10.1109/ICoPESA56898.2023.10141323","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10141323","url":null,"abstract":"Misalignment is an unavoidable problem in inductive power transfer (IPT). The coupling variation between coils may lead to the output power change and low efficiency which will reduce the flexibility and stability of the system. In order to ensure the stable power transfer of the system and extend the allowed operation region, this paper proposes an IPT system with a clamp circuit. The proposed IPT system can automatically activate or inactive the clamp circuit in different coupling ranges, so the system can maintain relatively constant power in a large coupling variation. Finally, a 390-W prototype is built to verify the theoretical analysis. The experimental results show that when the coupling coefficient variation is 0.14~0.42, the output power maintains between 355W~390W, and the efficiency is 80.98%~93.31%.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130276185","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}
Haojin Lin, Xiao-zhi Qiu, Xing Yan, Yi Zhou, Yiwei Qiu, Buxiang Zhou, Gang Chen
{"title":"Impacts of Control Parameters on Small-Signal Stability in a Hybrid-Synchronization-Based Grid-Connected Inverter System","authors":"Haojin Lin, Xiao-zhi Qiu, Xing Yan, Yi Zhou, Yiwei Qiu, Buxiang Zhou, Gang Chen","doi":"10.1109/ICoPESA56898.2023.10140438","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10140438","url":null,"abstract":"Recently, a hybrid synchronization control (HSC) that integrates phase locked loop (PLL) into the power synchronization control (PSL) is proposed. Some research results have clarified the HSC-based has better transient stability performance. However, impacts of control parameters on the small-signal stability in an HSC-based grid-connected inverter system is unclear under different grid strengths, which is inconvenient to design of parameters. As a result, in this paper, a full-order state-space model of the HSC-based grid-connected inverter system is built. Furthermore, by using eigenvalues analysis method, influence laws of main control parameters on small-signal stability in the HSC-based grid-connected inverter system are revealed under different grid strengths. Finally, the correctness of theoretical analysis is verified by time-domain simulation in MATLAB/Simulink. This work is hoped to provide a design orientation of parameters in HSC-based inverters for maintaining expected margin of small-signal stability under different grid strengths.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"529 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116338017","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}
Shangpeng Sun, Feiyue Ma, Bo Wang, Bo Niu, Lei Chen, H. Ni, Ying Wei
{"title":"Analysis and Prevention Countermeasures of Insulation Breakdown Caused by Foreign Body Fault of 800 kV GIS Disconnector","authors":"Shangpeng Sun, Feiyue Ma, Bo Wang, Bo Niu, Lei Chen, H. Ni, Ying Wei","doi":"10.1109/ICoPESA56898.2023.10141263","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10141263","url":null,"abstract":"GIS equipment has been applied widely in power grid and is one of the key equipment in transform substation. This paper focuses on an 800kV GIS bus differential protection finding that GIS disconnector exists a fault after on-site inspection. The insulation structure of GIS is checked and proven to be reliable by finite element method. After returning to the factory for disassembly, tests are carried out. It is comprehensively determined that the fault is resulted from insulation breakdown caused by foreign body attached to the moving side shielding devices. The prototype is organized to verify the source of foreign body in GIS disconnector, and the type and size of foreign body are obtained. The foreign body is proven to cause insulation breakdown by establishing the FEM model of the foreign body fault and this method can provide reference for similar GIS fault. Finally, to prevent similar accidents, the control measures to avoid foreign body fault in the process of production, manufacturing and assembly are put forward.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116398215","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}