Pub Date : 2022-12-23DOI: 10.1109/ICPES56491.2022.10073381
Xiaoqi Liang, Yong Wang, Xichao Yue
At present, some identity authentication schemes of intelligent terminals in distribution networks need to install additional hardware or issue digital certificates, and are vulnerable to replay attacks, impersonation attacks and other malicious attacks. To solve the above problems, this paper proposes a dynamic password authentication scheme based on SM2, SM3, SM4 algorithm combined with terminal ID, hardware address MAC, and shared password value PW. This scheme can realize the two-way identity authentication between the power distribution master station and the intelligent power distribution terminal. Experiment simulation and security analysis show that this scheme can resist the common malicious attacks such as replay attack, man in the middle attack and impersonation attack. Compared with other schemes, this scheme has more security features and improves the security of identity authentication while reducing the hardware cost of authentication schemes and avoiding the difficulty of digital certificate management and maintenance.
{"title":"Design of Dynamic Password Authentication Scheme Based on SM Algorithm","authors":"Xiaoqi Liang, Yong Wang, Xichao Yue","doi":"10.1109/ICPES56491.2022.10073381","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10073381","url":null,"abstract":"At present, some identity authentication schemes of intelligent terminals in distribution networks need to install additional hardware or issue digital certificates, and are vulnerable to replay attacks, impersonation attacks and other malicious attacks. To solve the above problems, this paper proposes a dynamic password authentication scheme based on SM2, SM3, SM4 algorithm combined with terminal ID, hardware address MAC, and shared password value PW. This scheme can realize the two-way identity authentication between the power distribution master station and the intelligent power distribution terminal. Experiment simulation and security analysis show that this scheme can resist the common malicious attacks such as replay attack, man in the middle attack and impersonation attack. Compared with other schemes, this scheme has more security features and improves the security of identity authentication while reducing the hardware cost of authentication schemes and avoiding the difficulty of digital certificate management and maintenance.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129368968","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}
Pub Date : 2022-12-23DOI: 10.1109/ICPES56491.2022.10072940
Naihao Liu, Houlei Gao, Bin Xu, Yunchi Zhang, Haoran Song
The grid-connected offshore wind farm via voltage source converter based high voltage direct current transmission (VSC-HVDC) is an important part of new energy power generation. When its AC transmission line fault, it presents a fault characteristic that is obviously different from the traditional power grid. This makes the traditional pilot protection face the risk of decreasing sensitivity or even refusing to operate. Therefore, the fault current on both sides of the line will change in the same direction when an internal fault occurs. When an external fault occurs, the fault current changes in the opposite direction. This paper forms the protection principle according to this characteristic. The cosine distance algorithm is selected as a method to measure the correlation between the direction of fault current changes on both sides. A new pilot protection method for transmission line of offshore wind power based on directions of fault current variation and cosine distance is proposed. The feasibility of the protection method under different fault types and transition resistances is verified by simulation.
{"title":"Pilot Protection for Transmission Line of Offshore Wind Power Based on Directions of Fault Current Variation and Cosine Distance","authors":"Naihao Liu, Houlei Gao, Bin Xu, Yunchi Zhang, Haoran Song","doi":"10.1109/ICPES56491.2022.10072940","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10072940","url":null,"abstract":"The grid-connected offshore wind farm via voltage source converter based high voltage direct current transmission (VSC-HVDC) is an important part of new energy power generation. When its AC transmission line fault, it presents a fault characteristic that is obviously different from the traditional power grid. This makes the traditional pilot protection face the risk of decreasing sensitivity or even refusing to operate. Therefore, the fault current on both sides of the line will change in the same direction when an internal fault occurs. When an external fault occurs, the fault current changes in the opposite direction. This paper forms the protection principle according to this characteristic. The cosine distance algorithm is selected as a method to measure the correlation between the direction of fault current changes on both sides. A new pilot protection method for transmission line of offshore wind power based on directions of fault current variation and cosine distance is proposed. The feasibility of the protection method under different fault types and transition resistances is verified by simulation.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126580724","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}
When the virtual synchronous control is adopted, the voltage of power grid may exist non-ideal factors such as voltage sag and distortion, which affect the stability of distributed generation system. Therefore, the voltage sensorless virtual synchronization control strategy in static coordinate system is proposed. Firstly, establish the VSG control state space model in the static coordinate system, and use the root locus method to analyze the stability of the system so as to reveal the influence of control parameters on system stability. Then the flux linkage observer is constructed by using stator current, DC bus voltage and control signal, and the network voltage is reconstructed in order to reduce the influence of non-ideal grid voltage on grid-connected system and improve the stability of inverter in weak grid. Finally, the accuracy of the model and the effectiveness of the improved control strategy are verified by simulation and experiment.
{"title":"The Grid Voltage Sensorless VSG Control Strategy Based on Static Coordinate System","authors":"Chunsong Liu, Ruixun Ma, Bing-chuan Li, Xueguang Zhang","doi":"10.1109/ICPES56491.2022.10072850","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10072850","url":null,"abstract":"When the virtual synchronous control is adopted, the voltage of power grid may exist non-ideal factors such as voltage sag and distortion, which affect the stability of distributed generation system. Therefore, the voltage sensorless virtual synchronization control strategy in static coordinate system is proposed. Firstly, establish the VSG control state space model in the static coordinate system, and use the root locus method to analyze the stability of the system so as to reveal the influence of control parameters on system stability. Then the flux linkage observer is constructed by using stator current, DC bus voltage and control signal, and the network voltage is reconstructed in order to reduce the influence of non-ideal grid voltage on grid-connected system and improve the stability of inverter in weak grid. Finally, the accuracy of the model and the effectiveness of the improved control strategy are verified by simulation and experiment.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130695302","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}
This paper has proposed a distributed PV meteorological modeling point selection method based on geographic grid division, aiming to improve the distributed PV power prediction accuracy. Firstly, the geographic grid division is carried out, and data such as installed capacity distribution, light resource assessment and geographic topography are input. Then the geographic grid grouping aggregation algorithm is designed to establish the aggregation relationship on power prediction for distributed power plants. Finally, the meteorological modeling point location is determined according to the evaluation score in the clustering group, and the meteorological and algorithmic modeling for distributed PV power prediction are carried out.
{"title":"Research on Meteorological Modeling Point Selection Method for Distributed PV Power Prediction","authors":"Han Wu, Liping Zhang, Zehan Lu, Chao Wu, Ling Zhou, Xincheng Tian","doi":"10.1109/ICPES56491.2022.10073374","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10073374","url":null,"abstract":"This paper has proposed a distributed PV meteorological modeling point selection method based on geographic grid division, aiming to improve the distributed PV power prediction accuracy. Firstly, the geographic grid division is carried out, and data such as installed capacity distribution, light resource assessment and geographic topography are input. Then the geographic grid grouping aggregation algorithm is designed to establish the aggregation relationship on power prediction for distributed power plants. Finally, the meteorological modeling point location is determined according to the evaluation score in the clustering group, and the meteorological and algorithmic modeling for distributed PV power prediction are carried out.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130985275","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}
Pub Date : 2022-12-23DOI: 10.1109/ICPES56491.2022.10072413
Zhang Shiling, Jiang Xiping
The new power system has the characteristics of “double height”, which mainly includes the introduction of wind power/photovoltaic and other power electronic devices on the basis of conventional power equipment, and the addition of typical converter valve hall internal converter transformer/valve tower/wall bushing/converter Bushing/super large voltage equalizing ball and other power equipment. For example, a large number of the power equipment need real-time operation and maintenance, it is urgent to develop efficient/practical/convenient intelligent operation and inspection technology for power equipment. Based on this, this paper combines image processing with deep learning technology, in which the image data includes high-definition digital photos/UV imager/infrared imager photos, and the deep learning algorithm mainly includes neural network and wavelet function processing. Through the above artificial intelligence algorithm processing, automatic extraction function of power equipment in image database and the comparative analysis function of historical image database are realized. Based on the above joint algorithm, it can effectively reduce the number of out detection of power equipment inspectors, automatically compare and analyze the massive image data acquisition and the historical image database, effectively discover the gradually strengthening points of UV discharge, the gradually increasing points of infrared imaging temperature or the gradually distorted points of displacement morphology, call high-definition digital photos based on the above information to mine the abnormal position of the state, and enlarge it to obtain the defect type. This paper attempts to provide the technical means for the intelligent operation inspection of the power equipment from the perspective of image processing. This technology has the broad application space and good theoretical research and engineering application value.
{"title":"Image Processing and Deep Learning Technology Help Power Equipment Intelligent Operation Inspection","authors":"Zhang Shiling, Jiang Xiping","doi":"10.1109/ICPES56491.2022.10072413","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10072413","url":null,"abstract":"The new power system has the characteristics of “double height”, which mainly includes the introduction of wind power/photovoltaic and other power electronic devices on the basis of conventional power equipment, and the addition of typical converter valve hall internal converter transformer/valve tower/wall bushing/converter Bushing/super large voltage equalizing ball and other power equipment. For example, a large number of the power equipment need real-time operation and maintenance, it is urgent to develop efficient/practical/convenient intelligent operation and inspection technology for power equipment. Based on this, this paper combines image processing with deep learning technology, in which the image data includes high-definition digital photos/UV imager/infrared imager photos, and the deep learning algorithm mainly includes neural network and wavelet function processing. Through the above artificial intelligence algorithm processing, automatic extraction function of power equipment in image database and the comparative analysis function of historical image database are realized. Based on the above joint algorithm, it can effectively reduce the number of out detection of power equipment inspectors, automatically compare and analyze the massive image data acquisition and the historical image database, effectively discover the gradually strengthening points of UV discharge, the gradually increasing points of infrared imaging temperature or the gradually distorted points of displacement morphology, call high-definition digital photos based on the above information to mine the abnormal position of the state, and enlarge it to obtain the defect type. This paper attempts to provide the technical means for the intelligent operation inspection of the power equipment from the perspective of image processing. This technology has the broad application space and good theoretical research and engineering application value.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115610234","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}
Pub Date : 2022-12-23DOI: 10.1109/ICPES56491.2022.10072529
J. Liao, Zhifeng Liu, Mingchun Hou, F. Gao, Yufei Chen, Yongye Xu, Huaqiang Li, Chen Zhang
Alkylbenzene insulating oil is widely used in high-voltage submarine oil-filled cables because of its low viscosity, low dielectric loss, high breakdown field strength, excellent electric field gas evolution, but there is still a lack of research on the decomposition mechanism of alkylbenzene insulating oil at this stage. In this paper, the molecular model of alkylbenzene is constructed and optimized by density functional theory (DFT), and the rationality of the optimization method of molecular model is verified by infrared spectroscopy. In addition, the decomposition process of alkylbenzene molecules is simulated by molecular dynamics (MD) research method, and the decomposition mechanism of alkylbenzene insulating oil is obtained.
{"title":"Molecular Dynamics Simulation of the Decomposition Mechanism of Alkylbenzene Insulating Oil","authors":"J. Liao, Zhifeng Liu, Mingchun Hou, F. Gao, Yufei Chen, Yongye Xu, Huaqiang Li, Chen Zhang","doi":"10.1109/ICPES56491.2022.10072529","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10072529","url":null,"abstract":"Alkylbenzene insulating oil is widely used in high-voltage submarine oil-filled cables because of its low viscosity, low dielectric loss, high breakdown field strength, excellent electric field gas evolution, but there is still a lack of research on the decomposition mechanism of alkylbenzene insulating oil at this stage. In this paper, the molecular model of alkylbenzene is constructed and optimized by density functional theory (DFT), and the rationality of the optimization method of molecular model is verified by infrared spectroscopy. In addition, the decomposition process of alkylbenzene molecules is simulated by molecular dynamics (MD) research method, and the decomposition mechanism of alkylbenzene insulating oil is obtained.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116937193","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}
Pub Date : 2022-12-23DOI: 10.1109/ICPES56491.2022.10073358
Yaping Hu, Huafeng Zhou, Shuhao Sun, Yubin He, Jialei Wang, Cheng Dong, Jie Liu
China's resources and load centers are distributed in reverse, and high voltage direct current (HVDC) technology is utilized to optimize the allocation of resources in the maximum range. Multi-terminal HVDC power can be freely controlled, and its characteristics of bidirectional transmission, network losses in the transmission process, power transmission restrictions, and power change restrictions in adjacent periods bring challenges to the spot market clearing model in the new power system environment. So, this paper proposes a HVDC tie-line model considering the characteristics including bidirectional transmission and transmission network loss. On this basis, this paper further proposes a regional spot market clearing model that also considers the transmission price of the tie-line in the spot market. With the goal of minimizing the overall cost of the region, the DC tie-line power, unit on and off state, and unit power are used as decision variables in the proposed model, and integer and nonnegative continuous variables are introduced to optimize and determine the tie-line transmission direction. Then the DC tie-line transmission power schedule, the AC tie-line transmission power schedule, unit start-up and shutdown schedule, and unit power schedule of the regional power grid are obtained on the premise of ensuring the security of the regional power grid. The proposed model finally realizes the synergy of wind, solar, water, and fire resources in the region. The three-region IEEE RTS-96 system is used for calculation, and the results verify the validity of the proposed model.
{"title":"Regional Spot Market Clearing Model for Multi-terminal High Voltage Direct Current Tie- Line with Bidirectional Transmission","authors":"Yaping Hu, Huafeng Zhou, Shuhao Sun, Yubin He, Jialei Wang, Cheng Dong, Jie Liu","doi":"10.1109/ICPES56491.2022.10073358","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10073358","url":null,"abstract":"China's resources and load centers are distributed in reverse, and high voltage direct current (HVDC) technology is utilized to optimize the allocation of resources in the maximum range. Multi-terminal HVDC power can be freely controlled, and its characteristics of bidirectional transmission, network losses in the transmission process, power transmission restrictions, and power change restrictions in adjacent periods bring challenges to the spot market clearing model in the new power system environment. So, this paper proposes a HVDC tie-line model considering the characteristics including bidirectional transmission and transmission network loss. On this basis, this paper further proposes a regional spot market clearing model that also considers the transmission price of the tie-line in the spot market. With the goal of minimizing the overall cost of the region, the DC tie-line power, unit on and off state, and unit power are used as decision variables in the proposed model, and integer and nonnegative continuous variables are introduced to optimize and determine the tie-line transmission direction. Then the DC tie-line transmission power schedule, the AC tie-line transmission power schedule, unit start-up and shutdown schedule, and unit power schedule of the regional power grid are obtained on the premise of ensuring the security of the regional power grid. The proposed model finally realizes the synergy of wind, solar, water, and fire resources in the region. The three-region IEEE RTS-96 system is used for calculation, and the results verify the validity of the proposed model.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122038537","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}
Pub Date : 2022-12-23DOI: 10.1109/ICPES56491.2022.10072932
Zhuoming Deng, Yang Mei, Yinsheng Su, Wenfeng Yao, Zhifei Guo, B. Tian, Q. Ma, Baorong Zhou, Chao Hong
Dynamic compensation devices (DCDs) such as dynamic voltage restorers, static synchronous compensators, and unified power quality conditioners provide significant support to the operation of active distribution networks (ADNs) with energy storage facilities. This paper concerns on the modeling of DCDs and their application incorporated with optimal scheme problem. Firstly, the on-load tap changer is replaced by an ideal transformer without loss and a constant impedance to avoid frequent inversions of Jacobi matrix. Then, the mathematical model which describes the charging/discharging process and energy conversion of energy storage facilities is proposed. This model also limits the charging/discharging power and initial/terminal state of energy storage facilities. Moreover, three types of DCDs are modelled in dynamic and steady states based on their series-connection or parallel-connection accesses to ADNs. The power flow equations are modified accordingly to take their dynamic compensation into account. Their applications are realized by distribution automation system incorporated with optimal schemes. Finally, the case study is conducted on a practical 110-bus ADN of China Southern Power Grid. With the modeling and application of DCDs, the optimal schemes are obtained in multiple aspects such as electric energy and charging/discharging power of energy storage facilities, et al. The charging and discharging processes of energy storage facilities are verified to be independent. DCDs and optimal schemes significantly improve the operating conditions of ADNs in the aspect of network losses.
{"title":"Modeling and Application of Dynamic Compensation Devices in Active Distribution Networks with Energy Storage Facilities","authors":"Zhuoming Deng, Yang Mei, Yinsheng Su, Wenfeng Yao, Zhifei Guo, B. Tian, Q. Ma, Baorong Zhou, Chao Hong","doi":"10.1109/ICPES56491.2022.10072932","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10072932","url":null,"abstract":"Dynamic compensation devices (DCDs) such as dynamic voltage restorers, static synchronous compensators, and unified power quality conditioners provide significant support to the operation of active distribution networks (ADNs) with energy storage facilities. This paper concerns on the modeling of DCDs and their application incorporated with optimal scheme problem. Firstly, the on-load tap changer is replaced by an ideal transformer without loss and a constant impedance to avoid frequent inversions of Jacobi matrix. Then, the mathematical model which describes the charging/discharging process and energy conversion of energy storage facilities is proposed. This model also limits the charging/discharging power and initial/terminal state of energy storage facilities. Moreover, three types of DCDs are modelled in dynamic and steady states based on their series-connection or parallel-connection accesses to ADNs. The power flow equations are modified accordingly to take their dynamic compensation into account. Their applications are realized by distribution automation system incorporated with optimal schemes. Finally, the case study is conducted on a practical 110-bus ADN of China Southern Power Grid. With the modeling and application of DCDs, the optimal schemes are obtained in multiple aspects such as electric energy and charging/discharging power of energy storage facilities, et al. The charging and discharging processes of energy storage facilities are verified to be independent. DCDs and optimal schemes significantly improve the operating conditions of ADNs in the aspect of network losses.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"744 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120879843","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}
The unit of variable-speed pumped storage can realize the stepless regulation of peak shaving and valley filling in power grid, improve the hydraulic performance of pump turbine, expand the operation range and improve the operating efficiency of the unit. The realization method of high-power variable-speed pumped-storage unit has been one of the key and difficult research works at this stage. In view of the complex excitation system of the AC excitation unit and only suitable for new applications, this paper proposes a full-power variable speed scheme in which multilevel matrix converter (M3C) topology converter are connected in parallel on both sides of the main circuit breaker of the existing pumped-storage unit. From the three dimensions of voltage stress, current stress and thermal stress of power electronics, the feasible scheme of using M3C converter to realize full power variable speed operation of pumped storage unit is analyzed. The feasibility of the proposed full-power variable-speed scheme is shown by comparing the pumping-storage starting strategies at constant speed and full-power variable-speed pumping-storage and the converted starting time of the water pump. The correctness of the proposed scheme is verified by the dynamic model experiment.
{"title":"Feasibility Analysis of Full Power Variable Speed Operation of Pumped Storage Power Station Based on M3C Converter","authors":"Youzong Jian, Lei Zhong, Feng Yi, Haishan Guo, Hemin Yang, Wei Xu, Jing Hu, Yanfei Wu","doi":"10.1109/ICPES56491.2022.10073170","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10073170","url":null,"abstract":"The unit of variable-speed pumped storage can realize the stepless regulation of peak shaving and valley filling in power grid, improve the hydraulic performance of pump turbine, expand the operation range and improve the operating efficiency of the unit. The realization method of high-power variable-speed pumped-storage unit has been one of the key and difficult research works at this stage. In view of the complex excitation system of the AC excitation unit and only suitable for new applications, this paper proposes a full-power variable speed scheme in which multilevel matrix converter (M3C) topology converter are connected in parallel on both sides of the main circuit breaker of the existing pumped-storage unit. From the three dimensions of voltage stress, current stress and thermal stress of power electronics, the feasible scheme of using M3C converter to realize full power variable speed operation of pumped storage unit is analyzed. The feasibility of the proposed full-power variable-speed scheme is shown by comparing the pumping-storage starting strategies at constant speed and full-power variable-speed pumping-storage and the converted starting time of the water pump. The correctness of the proposed scheme is verified by the dynamic model experiment.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124449706","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}
Pub Date : 2022-12-23DOI: 10.1109/ICPES56491.2022.10072622
Yunli Yue, Jianmin Ding, Dan Chen, Ruixue Fan, Yong Fang, Zhonghua Liu
The green energy transformation of big data centers with high energy consumption is important in promoting carbon neutrality. With zero carbon as the goal, this paper designs three scenarios of source-grid-load-storage collaboration in big data industrial park, namely, company-centric, user-centric, and market-centric. Then, the optimal allocation model of energy storage in zero-carbon big data industrial park with maximum profit is established, and its business model is analyzed with the financial evaluation method. Finally, this paper takes Zhangbemiaotan Big Data Industrial Park as an example, discusses the economy of the three scenarios combined with national policies, and puts forward suggestions on establishing a feasible business model of zero-carbon big data industrial Park.
{"title":"Research on the Scenario Design and Business Model Analysis of Source-Grid-Load-Storage Collaboration for Zero-Carbon Big Data Industrial Park","authors":"Yunli Yue, Jianmin Ding, Dan Chen, Ruixue Fan, Yong Fang, Zhonghua Liu","doi":"10.1109/ICPES56491.2022.10072622","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10072622","url":null,"abstract":"The green energy transformation of big data centers with high energy consumption is important in promoting carbon neutrality. With zero carbon as the goal, this paper designs three scenarios of source-grid-load-storage collaboration in big data industrial park, namely, company-centric, user-centric, and market-centric. Then, the optimal allocation model of energy storage in zero-carbon big data industrial park with maximum profit is established, and its business model is analyzed with the financial evaluation method. Finally, this paper takes Zhangbemiaotan Big Data Industrial Park as an example, discusses the economy of the three scenarios combined with national policies, and puts forward suggestions on establishing a feasible business model of zero-carbon big data industrial Park.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125912746","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：