Pub Date : 2022-10-01DOI: 10.1109/ACFPE56003.2022.9952185
Yi Xu, Y. Lei, Mingxu Xiang, Wei Liu, Zimeng Huang, G. He, Juan Yu
Hydropower units (HPUs) are inevitably affected by vibration zone when participating in frequency regulation through automatic generation control (AGC). To improve this., the anti-vibration demand of HPUs is embedded into the AGC command allocation in existing studies. However., the system frequency regulation demand is ignored when considering the anti-vibration demand., which may deteriorate the frequency performance. With this in mind., an AGC command allocation method coordinating frequency performance and anti-vibration of HPUs is proposed in this paper. Firstly., the adjustment amount for crossing the vibration zone and the available regulation capacity considering the anti-vibration of HPUs are evaluated. Then, an optimal selection strategy considering the system frequency regulation demand is proposed to determine the HPUs that implement the vibration zone crossing. Correspondingly, the aforementioned evaluation results are adjusted. Finally, the AGC command is allocated to HPUs and thermal power units (TPUs) with the comprehensive consideration of system frequency regulation demand, anti-vibration demand of HPUs, and available regulation capacity of HPUs and TPUs. Time-domain simulation results based on practical data demonstrate that the proposed method can reduce the impact of the vibration zone on HPUs while ensuring the system frequency performance.
{"title":"AGC Command Allocation Coordinating Frequency Performance and Anti-Vibration of Hydropower Units","authors":"Yi Xu, Y. Lei, Mingxu Xiang, Wei Liu, Zimeng Huang, G. He, Juan Yu","doi":"10.1109/ACFPE56003.2022.9952185","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952185","url":null,"abstract":"Hydropower units (HPUs) are inevitably affected by vibration zone when participating in frequency regulation through automatic generation control (AGC). To improve this., the anti-vibration demand of HPUs is embedded into the AGC command allocation in existing studies. However., the system frequency regulation demand is ignored when considering the anti-vibration demand., which may deteriorate the frequency performance. With this in mind., an AGC command allocation method coordinating frequency performance and anti-vibration of HPUs is proposed in this paper. Firstly., the adjustment amount for crossing the vibration zone and the available regulation capacity considering the anti-vibration of HPUs are evaluated. Then, an optimal selection strategy considering the system frequency regulation demand is proposed to determine the HPUs that implement the vibration zone crossing. Correspondingly, the aforementioned evaluation results are adjusted. Finally, the AGC command is allocated to HPUs and thermal power units (TPUs) with the comprehensive consideration of system frequency regulation demand, anti-vibration demand of HPUs, and available regulation capacity of HPUs and TPUs. Time-domain simulation results based on practical data demonstrate that the proposed method can reduce the impact of the vibration zone on HPUs while ensuring the system frequency performance.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"28 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":"114764447","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}
In recent years, the proportion of grid-forming converters based on virtual synchronous generator (VSG) has gradually increased in power systems, but the transient synchronization stability after it is connected to the power grid lacks in-depth research. The transient synchronous stability mechanism of VSG is studied in this paper. The transient synchronous stability model of the VSG during grid voltage dropping faults is established. Based on the phase portrait curve method, the instability mechanism of the VSG and the influence of voltage variation on its transient synchronization stability are studied. According to the reactive power and voltage coupling effect, an enhancement measure is proposed to improve the transient synchronization stability by automatically changing the command value of output active power. Finally, through the electromagnetic transient simulation model built in PSCAD/EMTDC, the transient stability mechanism of the VSG grid-connected system and the availability of enhancement measures during grid faults are respectively studied.
{"title":"Transient Stability Analysis of Grid-forming Converter Based on Virtual Synchronous Generator","authors":"Zhongming Xiang, Qiulong Ni, Zhenhua Li, Jianping Xu, Sixun Li, Zheren Zhang, Zheng Xu","doi":"10.1109/ACFPE56003.2022.9952270","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952270","url":null,"abstract":"In recent years, the proportion of grid-forming converters based on virtual synchronous generator (VSG) has gradually increased in power systems, but the transient synchronization stability after it is connected to the power grid lacks in-depth research. The transient synchronous stability mechanism of VSG is studied in this paper. The transient synchronous stability model of the VSG during grid voltage dropping faults is established. Based on the phase portrait curve method, the instability mechanism of the VSG and the influence of voltage variation on its transient synchronization stability are studied. According to the reactive power and voltage coupling effect, an enhancement measure is proposed to improve the transient synchronization stability by automatically changing the command value of output active power. Finally, through the electromagnetic transient simulation model built in PSCAD/EMTDC, the transient stability mechanism of the VSG grid-connected system and the availability of enhancement measures during grid faults are respectively studied.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"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":"129492862","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/ACFPE56003.2022.9952245
Alanazi Hani Owaid S
With power plant departing with power network, coal load of thermal plants and water storage of hydropower plants are not considered in some literatures, which may results to insufficient energy sources when making monthly generation scheduling. A multi-objective monthly generation scheduling considering the supply constraints of energy is proposed. This model with minimum monthly electricity deviation, the cost of generating electricity and the amount of waste water as the objective, and the linear constraints between water and electricity, coal and electricity, the supply constraints of water and coal and power balance constraints and so on are considered comprehensively. For solving the multi-objective model quickly, the normal boundary intersection method is used to transform the multi-objective problem into a series of single-objective problems, and the large-scale mixed integer linear programming problem is solved by commercial software CPLEX. After obtaining a series of Pareto's optimum solutions, the optimal solution is obtained by combining the entropy weight method considering subjective weight with the double base point method, which provides a reference for making monthly generation scheduling. The example results on a provincial power system show that the proposed model can fully take into account the constraints of energy sources, as well as, making the scheduling scheme more reasonable and executable.
{"title":"Multi-objective Monthly Generation Scheduling Considering the Supply Constraints of Adjustable Energy","authors":"Alanazi Hani Owaid S","doi":"10.1109/ACFPE56003.2022.9952245","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952245","url":null,"abstract":"With power plant departing with power network, coal load of thermal plants and water storage of hydropower plants are not considered in some literatures, which may results to insufficient energy sources when making monthly generation scheduling. A multi-objective monthly generation scheduling considering the supply constraints of energy is proposed. This model with minimum monthly electricity deviation, the cost of generating electricity and the amount of waste water as the objective, and the linear constraints between water and electricity, coal and electricity, the supply constraints of water and coal and power balance constraints and so on are considered comprehensively. For solving the multi-objective model quickly, the normal boundary intersection method is used to transform the multi-objective problem into a series of single-objective problems, and the large-scale mixed integer linear programming problem is solved by commercial software CPLEX. After obtaining a series of Pareto's optimum solutions, the optimal solution is obtained by combining the entropy weight method considering subjective weight with the double base point method, which provides a reference for making monthly generation scheduling. The example results on a provincial power system show that the proposed model can fully take into account the constraints of energy sources, as well as, making the scheduling scheme more reasonable and executable.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"16 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":"128445021","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/ACFPE56003.2022.9952268
Rongquan Fan, Yifei Jiao, Feng Tian, Wenhui Zeng, Bin Dong
Based on the saturated unsaturated seepage theory and Geo-studio software (SEEP/W and SLOPE/W modules), this article calculates the seepage feature and stability coefficient of the reservoir bank slope of a 220kV transmission line N47 tower in Western Sichuan, it shows that the slope stability and seepage field are affected by the rising and falling speed of reservoir level. The analysis results explain that with the increase of the rising rate of reservoir level, the pore water pressure increases rapidly, the slower the rise of a phreatic line is, and the more obvious the depression is. The faster the drawdown rate of reservoir water level is, the faster the decrease of pore water pressure is, the slower the decline of saturation line is, and the more obvious the upward convex is. During the rise of reservoir level, it is beneficial to landslide stability, but with end of the rise, this favorable trend gradually weakens or even develops in the opposite direction; The dropping of reservoir level is unfavorable to landslide stability. After the descent, this unfavorable trend gradually weakens and develops in the opposite direction.
{"title":"Seepage Characteristics and Stability Analysis of Transmission Line Tower Bank Slope Under the Action of Reservoir Water","authors":"Rongquan Fan, Yifei Jiao, Feng Tian, Wenhui Zeng, Bin Dong","doi":"10.1109/ACFPE56003.2022.9952268","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952268","url":null,"abstract":"Based on the saturated unsaturated seepage theory and Geo-studio software (SEEP/W and SLOPE/W modules), this article calculates the seepage feature and stability coefficient of the reservoir bank slope of a 220kV transmission line N47 tower in Western Sichuan, it shows that the slope stability and seepage field are affected by the rising and falling speed of reservoir level. The analysis results explain that with the increase of the rising rate of reservoir level, the pore water pressure increases rapidly, the slower the rise of a phreatic line is, and the more obvious the depression is. The faster the drawdown rate of reservoir water level is, the faster the decrease of pore water pressure is, the slower the decline of saturation line is, and the more obvious the upward convex is. During the rise of reservoir level, it is beneficial to landslide stability, but with end of the rise, this favorable trend gradually weakens or even develops in the opposite direction; The dropping of reservoir level is unfavorable to landslide stability. After the descent, this unfavorable trend gradually weakens and develops in the opposite direction.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"32 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":"127295151","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/ACFPE56003.2022.9952341
Xueyang Zhao, Jianbo Yi, Chenghao Li, Yufei Rao
On the basis of multi-infeed at the receiving end, some of the DC grid structures in China further reduce the electrical distance between the rectifier stations, forming a multi-outfeed and multi-infeed ultra-high voltage direct current (MOMIDC) transmission system with similar path. The complex AC-DC and AC-AC coupling characteristics of the MOMIDC system increase the control difficulty of the system voltage stability. This paper proposes the multi-outfeed and multi-infeed interaction factor (MOMI_IF) by analyzing the limitations of multi-infeed interaction factor (MIIF) in the MOMIDC system, and further deduces the multi-outfeed and multi-infeed voltage recovery intensity factor (MOMI_VRIF) on this basis. In addition, this paper also proposes a multi-level low voltage dependent current order limiter (VDCOL) coordination recovery strategy, which is based on the MOMI_VRIF. After simplifying the MOMIDC system by Thevenin equivalent, the author builds an electromagnetic transient model of a typical MOMIDC transmission system based on PSCAD and uses this model to simulate and verify the strategy in this paper
{"title":"Research on voltage coordination recovery strategy of multi-outfeed and multi-infeed UHVDC transmission system with similar path","authors":"Xueyang Zhao, Jianbo Yi, Chenghao Li, Yufei Rao","doi":"10.1109/ACFPE56003.2022.9952341","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952341","url":null,"abstract":"On the basis of multi-infeed at the receiving end, some of the DC grid structures in China further reduce the electrical distance between the rectifier stations, forming a multi-outfeed and multi-infeed ultra-high voltage direct current (MOMIDC) transmission system with similar path. The complex AC-DC and AC-AC coupling characteristics of the MOMIDC system increase the control difficulty of the system voltage stability. This paper proposes the multi-outfeed and multi-infeed interaction factor (MOMI_IF) by analyzing the limitations of multi-infeed interaction factor (MIIF) in the MOMIDC system, and further deduces the multi-outfeed and multi-infeed voltage recovery intensity factor (MOMI_VRIF) on this basis. In addition, this paper also proposes a multi-level low voltage dependent current order limiter (VDCOL) coordination recovery strategy, which is based on the MOMI_VRIF. After simplifying the MOMIDC system by Thevenin equivalent, the author builds an electromagnetic transient model of a typical MOMIDC transmission system based on PSCAD and uses this model to simulate and verify the strategy in this paper","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"14 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":"127343762","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/ACFPE56003.2022.9952317
Qiyun Cheng, Taiping Yuan, Xianzhe Liang, Z. Hu, Kai Ye
The propagation of cascading failures in an integrated electricity-gas system (IEGS) brings an inevitable threat to system safety. In this paper, we propose a novel model to describe the evolution process of cascading failures between electricity and gas grids that are affected by multiple driving factors. Hidden faults of relay protection, overloaded line outage, islanding decoupling and balancing, dispatch center faults, and other factors are considered in the simulation of cascading failures in power grids. Moreover, factors such as the removal of overloaded pipelines and the optimal dispatch are considered in the simulation of cascading failures in the gas network. Based on alternate iterations, a cascading failure model of IEGS is constructed from the perspective of time and space. The simulation results show that the proposed model can effectively describe the evolution process of cascading failures of coupling systems by multiple driving factors.
{"title":"Cascading Failure Model of Integrated Electricity-Gas System Considering Multiple Driving Factors","authors":"Qiyun Cheng, Taiping Yuan, Xianzhe Liang, Z. Hu, Kai Ye","doi":"10.1109/ACFPE56003.2022.9952317","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952317","url":null,"abstract":"The propagation of cascading failures in an integrated electricity-gas system (IEGS) brings an inevitable threat to system safety. In this paper, we propose a novel model to describe the evolution process of cascading failures between electricity and gas grids that are affected by multiple driving factors. Hidden faults of relay protection, overloaded line outage, islanding decoupling and balancing, dispatch center faults, and other factors are considered in the simulation of cascading failures in power grids. Moreover, factors such as the removal of overloaded pipelines and the optimal dispatch are considered in the simulation of cascading failures in the gas network. Based on alternate iterations, a cascading failure model of IEGS is constructed from the perspective of time and space. The simulation results show that the proposed model can effectively describe the evolution process of cascading failures of coupling systems by multiple driving factors.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"84 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":"130064243","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 overall acceleration of green and low-carbon transformation of social economy and the continuous emergence of traditional electric power pipe problems, the electrical BWFRP pipe came into being, which not only has many advantages such as light weight and good impact resistance, but also has great advantages and potential in reducing carbon emissions for mankind. This paper introduces the materials and performance index of electrical BWFRP pipe firstly, and then measures the environmental protection degree of electrical BWFRP pipe through carbon footprint analysis, calculates the green low-carbon level of electrical BWFRP pipe from the five stages of production, construction, use, demolition and recycling by using the life cycle assessment method. After comparing with traditional CVPC and MPP pipes in electric power, the results show that the CO2 greenhouse gas emission of electrical BWFRP pipe is smaller in the whole life cycle, the energy conservation and emission reduction efficiency is higher, which is conducive to the realization of carbon neutrality and carbon peak in China.
{"title":"Research on Green and Low-carbon of Electrical BWFRP Pipe","authors":"Jianzhong Wang, Xu Pan, Jiabei Ge, Jialin Yu, Qiman Huang, Jiejie Xie","doi":"10.1109/ACFPE56003.2022.9952274","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952274","url":null,"abstract":"With the overall acceleration of green and low-carbon transformation of social economy and the continuous emergence of traditional electric power pipe problems, the electrical BWFRP pipe came into being, which not only has many advantages such as light weight and good impact resistance, but also has great advantages and potential in reducing carbon emissions for mankind. This paper introduces the materials and performance index of electrical BWFRP pipe firstly, and then measures the environmental protection degree of electrical BWFRP pipe through carbon footprint analysis, calculates the green low-carbon level of electrical BWFRP pipe from the five stages of production, construction, use, demolition and recycling by using the life cycle assessment method. After comparing with traditional CVPC and MPP pipes in electric power, the results show that the CO2 greenhouse gas emission of electrical BWFRP pipe is smaller in the whole life cycle, the energy conservation and emission reduction efficiency is higher, which is conducive to the realization of carbon neutrality and carbon peak in China.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"40 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":"127903270","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/ACFPE56003.2022.9952229
Xiao Han, C. Deng, L. Y. Dai, M. Zheng, Z. Ling
Virtual synchronous generators (VSGs) can imitate the output characteristics of traditional synchronous generators, which means that when the frequency or voltage of the system fluctuates, the VSG can use the inertia and damping characteristics to smooth the fluctuations as much as possible. VSG also has transient stability problems under large disturbances, but its overcurrent capability is far less than that of traditional synchronous generators. Therefore, it is necessary to limit the overcurrent while maintaining the transient power angle stability of the system. Most of the existing studies analyze the overcurrent limit and transient power angle stability respectively, but the control strategies considered both are also worthy of attention and research. This paper firstly analyzes the current limiting control of VSG and its influence on the virtual power angle characteristic through the vector diagram. Then, the transient power angle stability of the system is studied under the condition of current saturation through the power angle characteristic curve. On this basis, a transient power angle stabilization method is proposed to keep the virtual power angle unchanged at the initial steady state value while limiting overcurrent. Finally, the rationality of the proposed strategy is verified by simulations on MATLAB/Simulink.
{"title":"VSG Transient Power Angle Stabilization Strategy Considering Current Limiting","authors":"Xiao Han, C. Deng, L. Y. Dai, M. Zheng, Z. Ling","doi":"10.1109/ACFPE56003.2022.9952229","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952229","url":null,"abstract":"Virtual synchronous generators (VSGs) can imitate the output characteristics of traditional synchronous generators, which means that when the frequency or voltage of the system fluctuates, the VSG can use the inertia and damping characteristics to smooth the fluctuations as much as possible. VSG also has transient stability problems under large disturbances, but its overcurrent capability is far less than that of traditional synchronous generators. Therefore, it is necessary to limit the overcurrent while maintaining the transient power angle stability of the system. Most of the existing studies analyze the overcurrent limit and transient power angle stability respectively, but the control strategies considered both are also worthy of attention and research. This paper firstly analyzes the current limiting control of VSG and its influence on the virtual power angle characteristic through the vector diagram. Then, the transient power angle stability of the system is studied under the condition of current saturation through the power angle characteristic curve. On this basis, a transient power angle stabilization method is proposed to keep the virtual power angle unchanged at the initial steady state value while limiting overcurrent. Finally, the rationality of the proposed strategy is verified by simulations on MATLAB/Simulink.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"1 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":"128863675","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/ACFPE56003.2022.9952243
Jun Wang, Wujie Chao, Liyu Dai, Xuejian Han, Z. Ling
To tackle the issue of power system transient stability deterioration resulted from a large number of power electronic equipment connected with grid, scholars proposed the virtual synchronous generator control (VSG) strategy. Aiming at problems of transient frequency and active power overshoot in traditional VSG control, a dual-parameter adaptive control strategy of inertia and damping for energy storage converters is proposed in this paper. By analyzing active power and angular frequency transient characteristic curves, mathematical expression of the dual-parameter adaptive control strategy is proposed. It avoids amplification noise caused by the introduction of differential link and the high operation requirement of the controller. The transfer function of power loop is established based on the analysis of traditional small signal model of synchronous generator. Besides, the selection range of parameters is given. Finally, through simulation studies carried out in the Matlab/Simulink environment, it is concluded that compared with traditional VSG control, the presented adaptive control strategy can reduce frequency and power overshoot by approximately 50% during transient process, along with reduce adjustment time effectively.
{"title":"Dual-Parameter Adaptive Control Strategy of Inertia and Damping for Energy Storage Converters","authors":"Jun Wang, Wujie Chao, Liyu Dai, Xuejian Han, Z. Ling","doi":"10.1109/ACFPE56003.2022.9952243","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952243","url":null,"abstract":"To tackle the issue of power system transient stability deterioration resulted from a large number of power electronic equipment connected with grid, scholars proposed the virtual synchronous generator control (VSG) strategy. Aiming at problems of transient frequency and active power overshoot in traditional VSG control, a dual-parameter adaptive control strategy of inertia and damping for energy storage converters is proposed in this paper. By analyzing active power and angular frequency transient characteristic curves, mathematical expression of the dual-parameter adaptive control strategy is proposed. It avoids amplification noise caused by the introduction of differential link and the high operation requirement of the controller. The transfer function of power loop is established based on the analysis of traditional small signal model of synchronous generator. Besides, the selection range of parameters is given. Finally, through simulation studies carried out in the Matlab/Simulink environment, it is concluded that compared with traditional VSG control, the presented adaptive control strategy can reduce frequency and power overshoot by approximately 50% during transient process, along with reduce adjustment time effectively.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"27 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":"128877169","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}
As residential users pay more and more attention to the electricity consumption of electrical equipment, non-invasive load decomposition research has become one of the important applications of artificial intelligence algorithms for end users. Deep learning models have gradually gained unique advantages in the application of non-invasive load decomposition. In this paper, based on convolutional block attention module, the attention mechanism is introduced to update the weight distribution and obtain more effective feature maps. Then the long - term memory network is used to establish a time window to learn the data features and decompose the load. The deep learning framework proposed in this paper has a simple structure and can significantly improve the efficiency and accuracy of load decomposition. The method is validated based on the public dataset UKdale.
{"title":"Research on Non-invasive Load Decomposition Algorithm Based on Attention Mechanism of Convolutional Neural Network","authors":"Jian Sun, Mingkai Li, Pengbo Shi, Oian Li, Jinshan Zhu, Wei Hu, Qiuting Guo","doi":"10.1109/ACFPE56003.2022.9952215","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952215","url":null,"abstract":"As residential users pay more and more attention to the electricity consumption of electrical equipment, non-invasive load decomposition research has become one of the important applications of artificial intelligence algorithms for end users. Deep learning models have gradually gained unique advantages in the application of non-invasive load decomposition. In this paper, based on convolutional block attention module, the attention mechanism is introduced to update the weight distribution and obtain more effective feature maps. Then the long - term memory network is used to establish a time window to learn the data features and decompose the load. The deep learning framework proposed in this paper has a simple structure and can significantly improve the efficiency and accuracy of load decomposition. The method is validated based on the public dataset UKdale.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":"74 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":"121312048","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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