Pub Date : 2022-10-01DOI: 10.1109/ACFPE56003.2022.9952346
Xi Wang, Wei Wang, Xuna Liu, Yang Liu, Linyan Zhao, Yipeng Chen, Huaqiang Li
In traditional schedule, there are problems such as large forecast errors and low degree of decentralization. As the basic distributed database technology, the blockchain technology can improve the accuracy of schedule and the transparency of data if it's introduced into the traditional schedule. Therefore, based on the blockchain technology, a park microgrid scheduling model is established in this paper, where the minimum operating cost is the objective function, the power balance, the output limitation, the climbing limitation and the battery constraint are the constraints. Mixed integer programming algorithm and the GUROBI solver are used to solve the proposed model, which can effectively reduce the operating cost of the park microgrid and improve the transparency of the scheduling data. Finally, a typical park microgrid case is used to prove the feasibility of the model and solution.
{"title":"Optimal Scheduling Strategy of Park Microgrid based on Blockchain Technology","authors":"Xi Wang, Wei Wang, Xuna Liu, Yang Liu, Linyan Zhao, Yipeng Chen, Huaqiang Li","doi":"10.1109/ACFPE56003.2022.9952346","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952346","url":null,"abstract":"In traditional schedule, there are problems such as large forecast errors and low degree of decentralization. As the basic distributed database technology, the blockchain technology can improve the accuracy of schedule and the transparency of data if it's introduced into the traditional schedule. Therefore, based on the blockchain technology, a park microgrid scheduling model is established in this paper, where the minimum operating cost is the objective function, the power balance, the output limitation, the climbing limitation and the battery constraint are the constraints. Mixed integer programming algorithm and the GUROBI solver are used to solve the proposed model, which can effectively reduce the operating cost of the park microgrid and improve the transparency of the scheduling data. Finally, a typical park microgrid case is used to prove the feasibility of the model and solution.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123085781","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 promotion of energy reform, the development scale of renewable energy is ahead of schedule, and the proportion of renewable energy in the active distribution network is gradually rising. However, due to the uncertainty of its output, it brings many difficulties to the operation of the distribution network, such as the reduction of flexibility. Therefore, it is necessary to quantify the impact of uncertainty on flexibility. This paper focuses on the flexibility evaluation of the active distribution network. Different from the traditional distribution network, its flexibility mainly comes from the renewable energy on the source side, the multi load on the load side and the grid reconstruction on the grid side. Therefore, from the three aspects of the source network load, the evaluation index and calculation formula of the flexibility of the active distribution network are proposed, and then the flexibility evaluation system is established. Finally, through the simulation analysis of ieee33 node distribution network system, the results show that the proposed flexibility evaluation system can realize the quantitative evaluation of distribution network in different scenarios.
{"title":"Flexibility evaluation index system and calculation method of active distribution network with high proportion of renewable energy","authors":"Zhijie Liu, Shouzhen Zhu, Peng Zhang, Zhenhai Zhang","doi":"10.1109/ACFPE56003.2022.9952278","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952278","url":null,"abstract":"With the promotion of energy reform, the development scale of renewable energy is ahead of schedule, and the proportion of renewable energy in the active distribution network is gradually rising. However, due to the uncertainty of its output, it brings many difficulties to the operation of the distribution network, such as the reduction of flexibility. Therefore, it is necessary to quantify the impact of uncertainty on flexibility. This paper focuses on the flexibility evaluation of the active distribution network. Different from the traditional distribution network, its flexibility mainly comes from the renewable energy on the source side, the multi load on the load side and the grid reconstruction on the grid side. Therefore, from the three aspects of the source network load, the evaluation index and calculation formula of the flexibility of the active distribution network are proposed, and then the flexibility evaluation system is established. Finally, through the simulation analysis of ieee33 node distribution network system, the results show that the proposed flexibility evaluation system can realize the quantitative evaluation of distribution network in different scenarios.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127304690","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/ACFPE56003.2022.9952175
Song-hua He, Feng Luo, Yingjie Chen, Naishuang Li, Weilun Ni
With the wide access of wind power and other renewable energy, subsynchronous oscillation accidents have occurred many times in power grid. Subsynchronous oscillation has a bad influence on the secure operation of power system. It has become one of the major factors restricting consumption of renewable energy. In order to suppress the occurrence of subsynchronous oscillation, the mathematical model of direct-drive permanent magnet synchronous generator (PMSG) is established, and then its impedance formula is derived. Based on impedance analysis, a quantitative risk assessment index for subsynchronous oscillation is proposed. On this basis, according to the sensitivity of control system's parameters to the quantitative risk assessment index, a preventive control measure to suppress the occurrence of subsynchronous oscillation is proposed. The feasibility of proposed control measure is verified.
{"title":"Research on Quantitative Risk Assessment and Prevention and Control Measure of Subsynchronous Oscillation","authors":"Song-hua He, Feng Luo, Yingjie Chen, Naishuang Li, Weilun Ni","doi":"10.1109/ACFPE56003.2022.9952175","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952175","url":null,"abstract":"With the wide access of wind power and other renewable energy, subsynchronous oscillation accidents have occurred many times in power grid. Subsynchronous oscillation has a bad influence on the secure operation of power system. It has become one of the major factors restricting consumption of renewable energy. In order to suppress the occurrence of subsynchronous oscillation, the mathematical model of direct-drive permanent magnet synchronous generator (PMSG) is established, and then its impedance formula is derived. Based on impedance analysis, a quantitative risk assessment index for subsynchronous oscillation is proposed. On this basis, according to the sensitivity of control system's parameters to the quantitative risk assessment index, a preventive control measure to suppress the occurrence of subsynchronous oscillation is proposed. The feasibility of proposed control measure is verified.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123457890","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/ACFPE56003.2022.9952213
Zhenyi Wang, Hua Ye, Bin Hu, Tianrui Xu, Ming Qu, Xinran He, Tao Ding
As the penetration of renewable energy sources (RESs) in the grid increases, the requirements for Automatic Generation Control (AGC) frequency regulation and reserve services should also be adjusted. RESs have great potential to provide auxiliary services, however, RESs also face the problem of revenue trade-off between participation in the electricity energy market and the auxiliary frequency regulation service market. Opportunity cost can help decision-makers make a reasonable allocation of resources and maximize the theoretical benefits. In this context, an opportunity cost calculation model for RESs in delivering AGC service is provided in this paper. The calculation process of the opportunity cost for RESs to provide AGC auxiliary services is proposed in this paper. To analysis the opportunity cost of the RES plants providing frequency adjustment service, the modified IEEE 6-bus system with two thermal power plants, two wind power plants, and one photovoltaic power plant, is adopted in this paper. Firstly, the clearing results of the electric market in the system is adopted. Then, the opportunity cost of the RESs with AGC is calculated. Finally, by comparing the opportunity cost per unit of capacity of frequency adjustment service and the AGC compensation price in the North Grid of China and the Northwest Grid of China, the optimal decision of AGC participation factor $a$ can be obtained. Case studies reveal that the marginal opportunity cost of AGC capacity for RESs increase with the growth of the AGC capacity. As a result, total revenue of the RESs reaches the maximum value at an appropriate ratio of AGC capacity, and this ratio is the optimal decision.
{"title":"Opportunity cost analysis of renewable energy participation in AGC frequency regulation","authors":"Zhenyi Wang, Hua Ye, Bin Hu, Tianrui Xu, Ming Qu, Xinran He, Tao Ding","doi":"10.1109/ACFPE56003.2022.9952213","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952213","url":null,"abstract":"As the penetration of renewable energy sources (RESs) in the grid increases, the requirements for Automatic Generation Control (AGC) frequency regulation and reserve services should also be adjusted. RESs have great potential to provide auxiliary services, however, RESs also face the problem of revenue trade-off between participation in the electricity energy market and the auxiliary frequency regulation service market. Opportunity cost can help decision-makers make a reasonable allocation of resources and maximize the theoretical benefits. In this context, an opportunity cost calculation model for RESs in delivering AGC service is provided in this paper. The calculation process of the opportunity cost for RESs to provide AGC auxiliary services is proposed in this paper. To analysis the opportunity cost of the RES plants providing frequency adjustment service, the modified IEEE 6-bus system with two thermal power plants, two wind power plants, and one photovoltaic power plant, is adopted in this paper. Firstly, the clearing results of the electric market in the system is adopted. Then, the opportunity cost of the RESs with AGC is calculated. Finally, by comparing the opportunity cost per unit of capacity of frequency adjustment service and the AGC compensation price in the North Grid of China and the Northwest Grid of China, the optimal decision of AGC participation factor $a$ can be obtained. Case studies reveal that the marginal opportunity cost of AGC capacity for RESs increase with the growth of the AGC capacity. As a result, total revenue of the RESs reaches the maximum value at an appropriate ratio of AGC capacity, and this ratio is the optimal decision.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121872122","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/ACFPE56003.2022.9952314
Min Wu, Xiaogang Li, Xinhang Shen, B. Zou
Under the framework of the two-level market, the provincial market has perfect transaction market such as forward contract and spot market, but There is only forward contract market for inter provincial power transactions Shanghai and Zhejiang Province in East China face the risk that the regulation range of the generator in the province is less than the load variation range due to the high proportion of power supply from outside the province. In order to mitigate this kind of risk, this paper proposes a kind of pumped storage transaction, which uses the transaction of pumped storage right to realize the mutual support of the adjustable capacity of the generating units in each province. Based on the analysis of the use right cost of pumped storage units under the day ahead market condition, this paper gives the principle of market transaction and the basic market rules. The significance of the proposed method is explained by using market data.
{"title":"Design of inter provincial pumped storage trading market in Yangtze River Delta region of China","authors":"Min Wu, Xiaogang Li, Xinhang Shen, B. Zou","doi":"10.1109/ACFPE56003.2022.9952314","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952314","url":null,"abstract":"Under the framework of the two-level market, the provincial market has perfect transaction market such as forward contract and spot market, but There is only forward contract market for inter provincial power transactions Shanghai and Zhejiang Province in East China face the risk that the regulation range of the generator in the province is less than the load variation range due to the high proportion of power supply from outside the province. In order to mitigate this kind of risk, this paper proposes a kind of pumped storage transaction, which uses the transaction of pumped storage right to realize the mutual support of the adjustable capacity of the generating units in each province. Based on the analysis of the use right cost of pumped storage units under the day ahead market condition, this paper gives the principle of market transaction and the basic market rules. The significance of the proposed method is explained by using market data.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129442216","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/ACFPE56003.2022.9952235
Qiang Chen, Wenbin Hao, Peng Zeng
Aiming at the planning problem caused by microgrid access to the distribution network, an optimization planning method for a distribution network integrated with microgrids based on an improved minimum spanning tree (MST) algorithm is proposed to improve the reliability and economy of the distribution network. Firstly, we analyzed the microgrid's internal characteristics, and the microgrid's external equivalent model was obtained. Based on this, the substation location and load zoning problem in the planning stage I is optimally solved based on the minimum load moment principle. In planning stage II, a multi-objective grid planning model is developed on the basis of the first stage, taking into account the economy and power supply reliability. The model is optimally solved based on the improved MST algorithm. The results of the distribution network planning without and with microgrids are compared, and the impact of the inclusion of microgrids on the line investment, network losses, and supply reliability of the distribution network is analyzed. The example analysis results indicate that the inclusion of microgrids can effectively reduce the substation's construction investment, improve the substation's power supply level, and improve the economy and reliability of the grid planning scheme. It provides a reference value for subsequent planners to do proper planning.
{"title":"Research on Optimal Planning of Distribution Network with Multi-microgrids Based on the Improved Minimum Spanning Tree Algorithm","authors":"Qiang Chen, Wenbin Hao, Peng Zeng","doi":"10.1109/ACFPE56003.2022.9952235","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952235","url":null,"abstract":"Aiming at the planning problem caused by microgrid access to the distribution network, an optimization planning method for a distribution network integrated with microgrids based on an improved minimum spanning tree (MST) algorithm is proposed to improve the reliability and economy of the distribution network. Firstly, we analyzed the microgrid's internal characteristics, and the microgrid's external equivalent model was obtained. Based on this, the substation location and load zoning problem in the planning stage I is optimally solved based on the minimum load moment principle. In planning stage II, a multi-objective grid planning model is developed on the basis of the first stage, taking into account the economy and power supply reliability. The model is optimally solved based on the improved MST algorithm. The results of the distribution network planning without and with microgrids are compared, and the impact of the inclusion of microgrids on the line investment, network losses, and supply reliability of the distribution network is analyzed. The example analysis results indicate that the inclusion of microgrids can effectively reduce the substation's construction investment, improve the substation's power supply level, and improve the economy and reliability of the grid planning scheme. It provides a reference value for subsequent planners to do proper planning.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129457518","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/ACFPE56003.2022.9952345
Jianhua Li, Haoting Qin, Yunxia Wu, Su Zhang, Hao Fu, Tianzhi Li, Yue Hu
The inter provincial and intra provincial transaction clearing model in the dual track system of planning and market is the key core of the construction of the national unified power market. Complementarity of Sichuan and Chongqing in power is analyzed in time scale. Based on the complementary characteristics of source and load and the constraint of inter provincial communication channel, considering the available transmission capacity of transmission lines in the inter provincial planned electricity quantity, the power supply and demand matching model of dynamic transformation between the generator and the user is established. As the market factors, the dynamic adjustment mechanism of market transmission price under the win-win cooperation mode of power generation, transmission and utilization is discussed in this paper. Furthermore, the clearing model of inter provincial power market transaction is proposed with taking into account the interests of generation, transmission and consumption. The transaction method of regional integrated electricity market is obtained in the dual track system of planning and market. Finally, through the simulation of an example, this method is effectively adapted to the dual track market mode, the utilization rate of inter provincial communication channels is improved, and the optimal allocation of power resources is realized.
{"title":"Optimization Clearing Model of Regional Integrated Electricity Market Transaction in the Dual Track System of Planning and Market","authors":"Jianhua Li, Haoting Qin, Yunxia Wu, Su Zhang, Hao Fu, Tianzhi Li, Yue Hu","doi":"10.1109/ACFPE56003.2022.9952345","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952345","url":null,"abstract":"The inter provincial and intra provincial transaction clearing model in the dual track system of planning and market is the key core of the construction of the national unified power market. Complementarity of Sichuan and Chongqing in power is analyzed in time scale. Based on the complementary characteristics of source and load and the constraint of inter provincial communication channel, considering the available transmission capacity of transmission lines in the inter provincial planned electricity quantity, the power supply and demand matching model of dynamic transformation between the generator and the user is established. As the market factors, the dynamic adjustment mechanism of market transmission price under the win-win cooperation mode of power generation, transmission and utilization is discussed in this paper. Furthermore, the clearing model of inter provincial power market transaction is proposed with taking into account the interests of generation, transmission and consumption. The transaction method of regional integrated electricity market is obtained in the dual track system of planning and market. Finally, through the simulation of an example, this method is effectively adapted to the dual track market mode, the utilization rate of inter provincial communication channels is improved, and the optimal allocation of power resources is realized.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114221011","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/ACFPE56003.2022.9952282
Xiang Ren, Tianxiao Huang, Guangming Xin, Xiaofei Wang, Lu Zhang, Miao Liu
There are electronic controlled power sources on both sides of the transmission line, which connects the renewable energy sources (RES) station and the modular multilevel converter high-voltage DC (MMC-HVDC) converter station. The control strategy affects the fault characteristics of the short-circuit current, making it amplitude-limited and phase-angle-controlled. The sensitivity performance of the original line differential protection decreases, and the adaptability of the protection needs to be further studied. Aiming at this problem, the fault characteristics of short-circuit current fed from the RES station and the MMC-HVDC converter station are both analyzed. And a differential protection method based on dynamic time warping is proposed. The distance matrix is constructed by calculating the Euclidean distance of the currents. Then calculate the shortest cumulative distance which is used to characterize the waveform similarity of the current and construct protection criteria based on waveform similarity. Through simulation and calculation, the effectiveness of the proposed protection method is verified, showing that the protection algorithm can sensitively identify internal and external faults.
{"title":"A New Differential Protection for Transmission Lines Connecting Renewable Energy Sources to MMC-HVDC Converter Stations Based on Dynamic Time Warping Algorithm","authors":"Xiang Ren, Tianxiao Huang, Guangming Xin, Xiaofei Wang, Lu Zhang, Miao Liu","doi":"10.1109/ACFPE56003.2022.9952282","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952282","url":null,"abstract":"There are electronic controlled power sources on both sides of the transmission line, which connects the renewable energy sources (RES) station and the modular multilevel converter high-voltage DC (MMC-HVDC) converter station. The control strategy affects the fault characteristics of the short-circuit current, making it amplitude-limited and phase-angle-controlled. The sensitivity performance of the original line differential protection decreases, and the adaptability of the protection needs to be further studied. Aiming at this problem, the fault characteristics of short-circuit current fed from the RES station and the MMC-HVDC converter station are both analyzed. And a differential protection method based on dynamic time warping is proposed. The distance matrix is constructed by calculating the Euclidean distance of the currents. Then calculate the shortest cumulative distance which is used to characterize the waveform similarity of the current and construct protection criteria based on waveform similarity. Through simulation and calculation, the effectiveness of the proposed protection method is verified, showing that the protection algorithm can sensitively identify internal and external faults.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134087312","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/ACFPE56003.2022.9952211
J. Zhou, Mukun Li, Liyang Du, Zihan Xi
In order to cure the crux of low accuracy of traditional PG transient stability prediction (PGTSP) methods, a PGTSP method based on improved Convolutional Neural Network(CNN) is proposed under big data. First, the theoretical framework of state assessment of Power Grid (PG) is constructed according to analysis of historical big data in PG. Based on data source, big data classification, big data cleaning and processing, PG status assessment is realized. Then, by selecting a variety of PG traits as the multi-input trait space of CNN model. By using multi-channel idea to independently analyze and fuse various features, a multi-channel multi-trait fusion CNN(MC-MF-FCNN) model is constructed and the accurate prediction of grid transient stability is achieved. Finally, the root mean square error(RMSE), false alarm rate, false alarm rate and accuracy rate of the proposed algorithm and the other two algorithms under the same conditions are compared and analyzed through simulation experiments. The results show that RMSE, false alarm rate and miss alarm rate of the proposed algorithm are the smallest and the accuracy is the highest. The highest accuracy rate within 9 cycles after the fault is 96.83 %, and the minimum RMSE, missed alarm rate and false alarm rate are 0.196, 2.15% and 1.32%, respectively. The performance is better than the other two comparison algorithms.
{"title":"Power Grid transient stability prediction method based on improved CNN under big data background","authors":"J. Zhou, Mukun Li, Liyang Du, Zihan Xi","doi":"10.1109/ACFPE56003.2022.9952211","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952211","url":null,"abstract":"In order to cure the crux of low accuracy of traditional PG transient stability prediction (PGTSP) methods, a PGTSP method based on improved Convolutional Neural Network(CNN) is proposed under big data. First, the theoretical framework of state assessment of Power Grid (PG) is constructed according to analysis of historical big data in PG. Based on data source, big data classification, big data cleaning and processing, PG status assessment is realized. Then, by selecting a variety of PG traits as the multi-input trait space of CNN model. By using multi-channel idea to independently analyze and fuse various features, a multi-channel multi-trait fusion CNN(MC-MF-FCNN) model is constructed and the accurate prediction of grid transient stability is achieved. Finally, the root mean square error(RMSE), false alarm rate, false alarm rate and accuracy rate of the proposed algorithm and the other two algorithms under the same conditions are compared and analyzed through simulation experiments. The results show that RMSE, false alarm rate and miss alarm rate of the proposed algorithm are the smallest and the accuracy is the highest. The highest accuracy rate within 9 cycles after the fault is 96.83 %, and the minimum RMSE, missed alarm rate and false alarm rate are 0.196, 2.15% and 1.32%, respectively. The performance is better than the other two comparison algorithms.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131251302","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/ACFPE56003.2022.9952234
Qi Mei, Fuping Wang, Qiang Zhang, Shu Shi, Yi Luo, Hanzheng Xie
In order to solve the problem of recovery of differential pressure energy in the process of natural gas production and improve its energy utilization rate, a user-side electricity network structure taking into account the differential pressure power generation device of natural gas is proposed, and an optimal scheduling model considering differential pressure power generation device, energy storage system and adjustable load coordination is constructed. Based on the proposed electricity network structure and optimal scheduling model, the model is programmed by Cplex mixed integer linear programming solver. Finally, taking the specific data of a natural gas production plant as the example parameter, the feasibility and economy of the optimal scheduling model are verified by simulation.
{"title":"Optimal scheduling of power consumption on the user side with natural gas differential pressure generation","authors":"Qi Mei, Fuping Wang, Qiang Zhang, Shu Shi, Yi Luo, Hanzheng Xie","doi":"10.1109/ACFPE56003.2022.9952234","DOIUrl":"https://doi.org/10.1109/ACFPE56003.2022.9952234","url":null,"abstract":"In order to solve the problem of recovery of differential pressure energy in the process of natural gas production and improve its energy utilization rate, a user-side electricity network structure taking into account the differential pressure power generation device of natural gas is proposed, and an optimal scheduling model considering differential pressure power generation device, energy storage system and adjustable load coordination is constructed. Based on the proposed electricity network structure and optimal scheduling model, the model is programmed by Cplex mixed integer linear programming solver. Finally, taking the specific data of a natural gas production plant as the example parameter, the feasibility and economy of the optimal scheduling model are verified by simulation.","PeriodicalId":198086,"journal":{"name":"2022 Asian Conference on Frontiers of Power and Energy (ACFPE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124275899","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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