Pub Date : 2022-10-01DOI: 10.1109/ACFPE56003.2022.9952335
Yang Sun, Baoxin Hao, Bo Su, Qing Fan, Chengqun Sun
High voltage circuit breaker (HVCB) is an essential and important device of power grid, while any faults occurred in operation mechanism of HVCB will greatly jeopardize reliability and safety of power system. In order to improve fault diagnosis performance, a new fault diagnosis method using random forest (RF) and kernel extreme learning machine (KELM) is presented in this paper. At first, RF is applied to select the critical features derived from coil current. Then, the selected features are applied as inputs of KEML to establish fault diagnosis model. Next, particle swarm optimization (PSO) is introduced to turn crucial parameters of KELM to enhance diagnosis accuracy. Finally, practical samples are used to assess fault diagnosis performance of the presented method. Experimental results indicates the proposed RF-KELM method is capable of providing higher diagnosis accuracy than conventional approaches, which indicates promising future.
{"title":"Fault diagnosis of High Voltage Circuit Breaker using Random Forest and PSo-KELM","authors":"Yang Sun, Baoxin Hao, Bo Su, Qing Fan, Chengqun Sun","doi":"10.1109/ACFPE56003.2022.9952335","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952335","url":null,"abstract":"High voltage circuit breaker (HVCB) is an essential and important device of power grid, while any faults occurred in operation mechanism of HVCB will greatly jeopardize reliability and safety of power system. In order to improve fault diagnosis performance, a new fault diagnosis method using random forest (RF) and kernel extreme learning machine (KELM) is presented in this paper. At first, RF is applied to select the critical features derived from coil current. Then, the selected features are applied as inputs of KEML to establish fault diagnosis model. Next, particle swarm optimization (PSO) is introduced to turn crucial parameters of KELM to enhance diagnosis accuracy. Finally, practical samples are used to assess fault diagnosis performance of the presented method. Experimental results indicates the proposed RF-KELM method is capable of providing higher diagnosis accuracy than conventional approaches, which indicates promising future.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116491595","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}
With the development of energy storage technology, shared energy storage becomes the new normal for future grid user-side energy storage applications. The article summarizes the research status of shared energy storage(SEES) and integrated energy system(IES), and studies the relationship between SEES and energy network in combination with SEES technology. A system model including gas turbine model, gas boiler model, diesel generator model, electric chiller model and shared energy storage power plant model is proposed to realize the coordinated planning and development of thermal, electricity, cooling and gas in the park by considering the electric power, thermal power and cooling load balance as well as the constraints of the equipment and the park system's lowest one-day operating cost is regarded as the target function. Finally, the results of the collaborative energy optimization are demonstrated by a typical daily scenario of energy use in the park in summer, and the optimization results are analyzed, proving the effectiveness of the proposed method.
{"title":"Collaborative Optimization of Park Integrated Energy system based on Shared Energy Storage","authors":"Zhichao Ren, Ruiguang Ma, Chuan Long, Bo Chen, Xuehai Lv, Huaqiang Li, Luya Gao","doi":"10.1109/ACFPE56003.2022.9952337","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952337","url":null,"abstract":"With the development of energy storage technology, shared energy storage becomes the new normal for future grid user-side energy storage applications. The article summarizes the research status of shared energy storage(SEES) and integrated energy system(IES), and studies the relationship between SEES and energy network in combination with SEES technology. A system model including gas turbine model, gas boiler model, diesel generator model, electric chiller model and shared energy storage power plant model is proposed to realize the coordinated planning and development of thermal, electricity, cooling and gas in the park by considering the electric power, thermal power and cooling load balance as well as the constraints of the equipment and the park system's lowest one-day operating cost is regarded as the target function. Finally, the results of the collaborative energy optimization are demonstrated by a typical daily scenario of energy use in the park in summer, and the optimization results are analyzed, proving the effectiveness of the proposed method.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129302239","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 : 2022-10-01DOI: 10.1109/ACFPE56003.2022.9952326
Haibin Zhang, Shilei Huang, Jiaqing Zhang, Wen Shi, Fengju Shang, D. Kong, Bingqing Li, Wanru Hong
With the increase in the number of transformers., the internal transformer oil fire protection is severe. Under various situations., the effectiveness of foam extinguishing agent in suppressing fires varies substantially. This research establishes a targeted evaluation index system appropriate for transformer oil fire based on the relevant national standards and researches., and then formulates the value standard of each index based on the relevant national standards and experimental data in order to choose the most suitable foam fire extinguishing agent for transformer oil fire. The research then uses the entropy weight TOPSIS approach to evaluate the applicability of three different types of foam extinguishing agents based on the index system. The results demonstrated that fluoroprotein foam performs most effectively overall. As a result., choosing fluoroprotein foam as the substation foam extinguishing agent is advised.
{"title":"Evaluation Index System of Fire Extinguishing Agent Suitable for Transformer Oil Fire Based on Entropy Weight TOPSIS","authors":"Haibin Zhang, Shilei Huang, Jiaqing Zhang, Wen Shi, Fengju Shang, D. Kong, Bingqing Li, Wanru Hong","doi":"10.1109/ACFPE56003.2022.9952326","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952326","url":null,"abstract":"With the increase in the number of transformers., the internal transformer oil fire protection is severe. Under various situations., the effectiveness of foam extinguishing agent in suppressing fires varies substantially. This research establishes a targeted evaluation index system appropriate for transformer oil fire based on the relevant national standards and researches., and then formulates the value standard of each index based on the relevant national standards and experimental data in order to choose the most suitable foam fire extinguishing agent for transformer oil fire. The research then uses the entropy weight TOPSIS approach to evaluate the applicability of three different types of foam extinguishing agents based on the index system. The results demonstrated that fluoroprotein foam performs most effectively overall. As a result., choosing fluoroprotein foam as the substation foam extinguishing agent is advised.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127129153","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 : 2022-10-01DOI: 10.1109/ACFPE56003.2022.9952177
Xinting Yang, Chuan Long, Yongsheng Ye, Ting Li, Liyang Liu, Jun Wei, Xuna Liu, Haoyang Bai
With the increase in the penetration of renewable energy, the capacity credibility of DG(distributed generators) receives widely attention. To deal with the uncertainty of DG output, the access of flexible resources is the trend of distribution network development, which influences the capacity credibility of the DG. In this paper, scenario analysis method and robust optimization theory are introduced to deal with the long-term and short-term uncertainties of the net load fluctuation to obtain a comprehensive and reasonable set of scenarios for the distribution network operation. And then, based on the construction of the output model of flexible resources, the distribution grid optimal dispatch model that takes into account the PV acceptance capacity and economy is proposed. Finally, simulation tests are conducted with a typical IEEE-33 nodes test system to verify the effectiveness of the proposed method.
{"title":"Distribution Network PV Acceptance Capacity Assessment Considering Balance of Flexibility Supply and Demand","authors":"Xinting Yang, Chuan Long, Yongsheng Ye, Ting Li, Liyang Liu, Jun Wei, Xuna Liu, Haoyang Bai","doi":"10.1109/ACFPE56003.2022.9952177","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952177","url":null,"abstract":"With the increase in the penetration of renewable energy, the capacity credibility of DG(distributed generators) receives widely attention. To deal with the uncertainty of DG output, the access of flexible resources is the trend of distribution network development, which influences the capacity credibility of the DG. In this paper, scenario analysis method and robust optimization theory are introduced to deal with the long-term and short-term uncertainties of the net load fluctuation to obtain a comprehensive and reasonable set of scenarios for the distribution network operation. And then, based on the construction of the output model of flexible resources, the distribution grid optimal dispatch model that takes into account the PV acceptance capacity and economy is proposed. Finally, simulation tests are conducted with a typical IEEE-33 nodes test system to verify the effectiveness of the proposed method.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"82 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123143832","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 : 2022-10-01DOI: 10.1109/ACFPE56003.2022.9952319
Zhicheng Ma, Qiang Zhou, Dingmei Wang, Ruixiao Zhang, Lijuan Liu
With numerous diverse flexible loads widely connected to power grid, the heterogeneity of flexible loads has become difficult to adapt to the large-scale power balance demand of the power grid. Optimal configuration of energy storage considering the heterogeneous flexible loads is the key to realize the power balance of the regional power grid. Firstly, based on the differentiated characteristics and power consumption curve of heterogeneous loads, the heterogeneous loads are classified as transferable loads, cuttable loads and adjustable loads. Then, the coordinated optimization strategy is proposed for heterogeneous loads and multi-type energy storages. the optimal configuration of multi-type energy storages is achieved by mixed integer linear programming (MILP). Finally, compared to flexible loads or energy storages participating in grid regulation alone, the proposed optimization strategy can not only achieve power balance of the regional grid, but also reduce the system operation cost and improve the economic benefits of the grid.
{"title":"Optimal configuration of energy storage considering the heterogeneous flexible loads","authors":"Zhicheng Ma, Qiang Zhou, Dingmei Wang, Ruixiao Zhang, Lijuan Liu","doi":"10.1109/ACFPE56003.2022.9952319","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952319","url":null,"abstract":"With numerous diverse flexible loads widely connected to power grid, the heterogeneity of flexible loads has become difficult to adapt to the large-scale power balance demand of the power grid. Optimal configuration of energy storage considering the heterogeneous flexible loads is the key to realize the power balance of the regional power grid. Firstly, based on the differentiated characteristics and power consumption curve of heterogeneous loads, the heterogeneous loads are classified as transferable loads, cuttable loads and adjustable loads. Then, the coordinated optimization strategy is proposed for heterogeneous loads and multi-type energy storages. the optimal configuration of multi-type energy storages is achieved by mixed integer linear programming (MILP). Finally, compared to flexible loads or energy storages participating in grid regulation alone, the proposed optimization strategy can not only achieve power balance of the regional grid, but also reduce the system operation cost and improve the economic benefits of the grid.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122084346","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}
With the large-scale integration of the distributed photovoltaic (PV) power generation system and power-electronic-device-based loads such as electric vehicles and data centers. The low voltage direct current supply and utilization system (LVDCSUS) has received much attention from academics and industry in recent years. However, the initial research has not been conducted in the LVDCSUS, including but not limited to operation modes, control strategy, protection, grounding mode. As one of the most important factors in the operation, reliability, and protection configuration of LVDCSUS, the choosing of the grounding mode in the LVDCSUS may influence the transient characteristics of the connecting point of the energy storage and PV generation system, which will determine the operating stability of the LVDCSUS. To provide a guideline to future LVDCSUS grounding mode chosen in different operation conditions, in this paper, the transient characteristics of the DC bus, energy storage port and photovoltaic power supply port of the symmetrical monopole system after the monopole ground fault of the DC bus are analyzed, and the influence of the grounding fault on the power generation and energy storage module operation of the low-voltage DC system is discussed. The research can provide reference for the selection of grounding mode and the configuration of fault protection in the LVDCSUS.
{"title":"Grounding Operation Analysis of Low Voltage Direct Current Supply and Utilization System","authors":"Shukang Zhao, Yuanyuan Sun, Kaiqi Sun, Shulin Yin, C. Tian, Xingqi Wu","doi":"10.1109/ACFPE56003.2022.9952281","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952281","url":null,"abstract":"With the large-scale integration of the distributed photovoltaic (PV) power generation system and power-electronic-device-based loads such as electric vehicles and data centers. The low voltage direct current supply and utilization system (LVDCSUS) has received much attention from academics and industry in recent years. However, the initial research has not been conducted in the LVDCSUS, including but not limited to operation modes, control strategy, protection, grounding mode. As one of the most important factors in the operation, reliability, and protection configuration of LVDCSUS, the choosing of the grounding mode in the LVDCSUS may influence the transient characteristics of the connecting point of the energy storage and PV generation system, which will determine the operating stability of the LVDCSUS. To provide a guideline to future LVDCSUS grounding mode chosen in different operation conditions, in this paper, the transient characteristics of the DC bus, energy storage port and photovoltaic power supply port of the symmetrical monopole system after the monopole ground fault of the DC bus are analyzed, and the influence of the grounding fault on the power generation and energy storage module operation of the low-voltage DC system is discussed. The research can provide reference for the selection of grounding mode and the configuration of fault protection in the LVDCSUS.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"64 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115823187","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 : 2022-10-01DOI: 10.1109/ACFPE56003.2022.9952208
Haiwei Liu, W. Zhen, Baixu Chen, Weicheng Shen, Kaisong Dong, Xiping Ma
To improve the power generation efficiency of photovoltaic (PV) arrays, this paper applies the sliding mode control (SMC) strategy to two-stage PV off-grid and grid-connected inverters to keep follow the maximum power point (MPP) of PV arrays and compare it with the traditional perturbation observation (P&O) strategy on both dynamic and stationary performance. The PV off-grid system uses the SMC strategy for the front stage and a three-phase sinusoidal pulse-width modulation (SPWM) strategy for the back stage; the PV grid-connected system uses the SMC strategy for the front stage and a double-closed-loop modulation strategy for the back stage with an external loop of grid voltage and an internal loop of current. Simulation reports demonstrated that the SMC could succeed in tracking on MPP and that two-stage PV off-grid and grid-connected inverters can output power to the load and the grid stably.
{"title":"Sliding-Mode Control with Two-Stage Photovoltaic Off-Grid and Grid-Connected Inverters","authors":"Haiwei Liu, W. Zhen, Baixu Chen, Weicheng Shen, Kaisong Dong, Xiping Ma","doi":"10.1109/ACFPE56003.2022.9952208","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952208","url":null,"abstract":"To improve the power generation efficiency of photovoltaic (PV) arrays, this paper applies the sliding mode control (SMC) strategy to two-stage PV off-grid and grid-connected inverters to keep follow the maximum power point (MPP) of PV arrays and compare it with the traditional perturbation observation (P&O) strategy on both dynamic and stationary performance. The PV off-grid system uses the SMC strategy for the front stage and a three-phase sinusoidal pulse-width modulation (SPWM) strategy for the back stage; the PV grid-connected system uses the SMC strategy for the front stage and a double-closed-loop modulation strategy for the back stage with an external loop of grid voltage and an internal loop of current. Simulation reports demonstrated that the SMC could succeed in tracking on MPP and that two-stage PV off-grid and grid-connected inverters can output power to the load and the grid stably.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115280656","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 : 2022-10-01DOI: 10.1109/ACFPE56003.2022.9952323
Fang Liu, Y. Qiao, Yang Liu, Wei Wang, Xinting Yang, Huaqiang Li, Miaomiao Wang
In order to realize the market-oriented promotion of cloud energy storage business, on the premise of ensuring the optimal benefit of user groups, a cloud energy storage service mechanism considering electric energy trading is proposed. The bidding form is introduced into power trading to effectively motivate users to actively participate in the service and expand ideas for the commercialization of cloud energy storage business. First, a detailed cloud energy storage service mechanism architecture and business process are designed. Secondly, a day-ahead power dispatching model and strategy aiming at the minimum net energy cost of the user groups are constructed. Then, an electricity bidding and matching strategy in the form of multiple rounds of collective bidding is established. And the benefits of each participant are clarified. Finally, a park is taken as an example to verify the effectiveness of the proposed service mechanism. The results show that this mechanism can promote the local consumption of renewable energy, reduce the energy cost of users, increase the service engagement of users, and achieve a win-win situation for all parties.
{"title":"Cloud Energy Storage Service Mechanism considering Power Transaction","authors":"Fang Liu, Y. Qiao, Yang Liu, Wei Wang, Xinting Yang, Huaqiang Li, Miaomiao Wang","doi":"10.1109/ACFPE56003.2022.9952323","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952323","url":null,"abstract":"In order to realize the market-oriented promotion of cloud energy storage business, on the premise of ensuring the optimal benefit of user groups, a cloud energy storage service mechanism considering electric energy trading is proposed. The bidding form is introduced into power trading to effectively motivate users to actively participate in the service and expand ideas for the commercialization of cloud energy storage business. First, a detailed cloud energy storage service mechanism architecture and business process are designed. Secondly, a day-ahead power dispatching model and strategy aiming at the minimum net energy cost of the user groups are constructed. Then, an electricity bidding and matching strategy in the form of multiple rounds of collective bidding is established. And the benefits of each participant are clarified. Finally, a park is taken as an example to verify the effectiveness of the proposed service mechanism. The results show that this mechanism can promote the local consumption of renewable energy, reduce the energy cost of users, increase the service engagement of users, and achieve a win-win situation for all parties.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115670767","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 : 2022-10-01DOI: 10.1109/ACFPE56003.2022.9952318
Xinwen Zhang, B. Liu, Feng Gao, Dunwen Song, Xukai Zhu
Temperature field testing is an important part of testing the design quality of high-frequency transformers in power electronic transformers (PET) or isolating DC-DC converters. The test process requires reproducing the application scenarios of high-frequency transformers and at the same time reducing the power consumption of the test power as much as possible. To this end, this paper designs a DC power feedback type high-frequency transformer temperature field test power supply. The power supply is mainly composed of power frequency AC-DC and back-to-back high-frequency transformers, DC-AC and AC-DC modules. Power diodes and resistors are connected in series with high-frequency AC-DC and DC-AC DC sides to form a DC power feed link. The sum of the high-frequency DC-AC DC voltage and the DC feeding resistance voltage is used as the set value of the high-frequency AC-DC DC voltage output., and the single-phase shift of DC-DC control is adopted to achieve the target current output of the test power supply. At the same time, a mathematical model between the input and output current of the test power supply and the grid-side current is established, which provides a theoretical basis for the energy-saving evaluation of the energy feedback test method. Finally, the test power supply experiment simulation system was built, and the results confirmed the correctness of the test plan.
{"title":"Study on the Topology and Control Method of a Power Supply for Temperature Field Test of High-frequency Transformer","authors":"Xinwen Zhang, B. Liu, Feng Gao, Dunwen Song, Xukai Zhu","doi":"10.1109/ACFPE56003.2022.9952318","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952318","url":null,"abstract":"Temperature field testing is an important part of testing the design quality of high-frequency transformers in power electronic transformers (PET) or isolating DC-DC converters. The test process requires reproducing the application scenarios of high-frequency transformers and at the same time reducing the power consumption of the test power as much as possible. To this end, this paper designs a DC power feedback type high-frequency transformer temperature field test power supply. The power supply is mainly composed of power frequency AC-DC and back-to-back high-frequency transformers, DC-AC and AC-DC modules. Power diodes and resistors are connected in series with high-frequency AC-DC and DC-AC DC sides to form a DC power feed link. The sum of the high-frequency DC-AC DC voltage and the DC feeding resistance voltage is used as the set value of the high-frequency AC-DC DC voltage output., and the single-phase shift of DC-DC control is adopted to achieve the target current output of the test power supply. At the same time, a mathematical model between the input and output current of the test power supply and the grid-side current is established, which provides a theoretical basis for the energy-saving evaluation of the energy feedback test method. Finally, the test power supply experiment simulation system was built, and the results confirmed the correctness of the test plan.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115793913","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 : 2022-10-01DOI: 10.1109/ACFPE56003.2022.9952293
Z. Jiang, Zhizhou Shang, Feng Guo, Yupeng Wang
With the continuous development of power systems, the safety of transmission lines has become an important issue, such as the impact of trees under transmission lines on line safety. Therefore, a set of online supervision plan has been developed for the current status quo of potential safety hazards and complex operating environment. This article mainly introduces a remote automatic detection device based on visualized three-dimensional digital model technology and mobile communication module. This method can effectively improve the efficiency of inspection work.
{"title":"Research on Tree Detection under Transmission Line Based on 3D Visualization","authors":"Z. Jiang, Zhizhou Shang, Feng Guo, Yupeng Wang","doi":"10.1109/ACFPE56003.2022.9952293","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952293","url":null,"abstract":"With the continuous development of power systems, the safety of transmission lines has become an important issue, such as the impact of trees under transmission lines on line safety. Therefore, a set of online supervision plan has been developed for the current status quo of potential safety hazards and complex operating environment. This article mainly introduces a remote automatic detection device based on visualized three-dimensional digital model technology and mobile communication module. This method can effectively improve the efficiency of inspection work.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126942378","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}
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