When GIS during manufacturing, transportation, installation, and operation, metal particles will inevitably be generated due to mechanical friction. The existence of metal particles poses a huge threat to the insulation performance of GIS. The previous research on free metal particles in GIS mainly focused on the force analysis of the two-dimensional radial plane particle movement, ignoring the influence of the spacer on the axial movement of the particles. In this paper, by establishing a three-dimensional simulation model with spacers, the influence of spacers on particle axial electric field distribution is studied. Based on the analysis of the force of two-dimensional radial plane particles, the influence of axial electric field on particle movement is further studied. The results show that the direction of the electric field on the concave side of the spacer is directed from the spacer to one end of the pipeline, and the particles are subjected to the axial electric field force directed to the spacer. The particles are finally mainly concentrated near the spacer. The actual GIS experiment platform was taken to verify the simulation calculation results.
{"title":"Influence of Spacer on the Movement Law of Free Metal Particles in GIS","authors":"Jingtan Ma, Ke Zhao, Hongtao Li, Yujie Li, Yongfei Liu, Hanyan Xiao","doi":"10.1109/REPE52765.2021.9616981","DOIUrl":"https://doi.org/10.1109/REPE52765.2021.9616981","url":null,"abstract":"When GIS during manufacturing, transportation, installation, and operation, metal particles will inevitably be generated due to mechanical friction. The existence of metal particles poses a huge threat to the insulation performance of GIS. The previous research on free metal particles in GIS mainly focused on the force analysis of the two-dimensional radial plane particle movement, ignoring the influence of the spacer on the axial movement of the particles. In this paper, by establishing a three-dimensional simulation model with spacers, the influence of spacers on particle axial electric field distribution is studied. Based on the analysis of the force of two-dimensional radial plane particles, the influence of axial electric field on particle movement is further studied. The results show that the direction of the electric field on the concave side of the spacer is directed from the spacer to one end of the pipeline, and the particles are subjected to the axial electric field force directed to the spacer. The particles are finally mainly concentrated near the spacer. The actual GIS experiment platform was taken to verify the simulation calculation results.","PeriodicalId":136285,"journal":{"name":"2021 IEEE 4th International Conference on Renewable Energy and Power Engineering (REPE)","volume":"369 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133364558","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 : 2021-10-09DOI: 10.1109/REPE52765.2021.9617109
Saeedreza Jadidi, H. Badihi, Youmin Zhang
Smart microgrids are the basic components of the next-generation power grid known as smart grid. To achieve a more cost-effective functionality and enhance the reliability of smart microgrids, innovative techniques for cyber-attack detection and cyber-resilient control need to be addressed. For this purpose, this paper considers various distributed generation resources, including wind, solar and battery, as a hybrid renewable microgrid. A novel model-based cyber-attack detection and diagnosis scheme based on fuzzy modeling and identification approach is presented for the PV system at microgrid level. Also, an integrated cyber-resilient controller for the DC/DC pulse-width modulation (PWM) converter is proposed to mitigate the impacts of cyber-attacks. Finally, simulations are performed in MATLAB/Simulink environment to demonstrate the effectiveness of the proposed approaches.
{"title":"Active Cyber-Resilient Control for a PV System at Microgrid Level","authors":"Saeedreza Jadidi, H. Badihi, Youmin Zhang","doi":"10.1109/REPE52765.2021.9617109","DOIUrl":"https://doi.org/10.1109/REPE52765.2021.9617109","url":null,"abstract":"Smart microgrids are the basic components of the next-generation power grid known as smart grid. To achieve a more cost-effective functionality and enhance the reliability of smart microgrids, innovative techniques for cyber-attack detection and cyber-resilient control need to be addressed. For this purpose, this paper considers various distributed generation resources, including wind, solar and battery, as a hybrid renewable microgrid. A novel model-based cyber-attack detection and diagnosis scheme based on fuzzy modeling and identification approach is presented for the PV system at microgrid level. Also, an integrated cyber-resilient controller for the DC/DC pulse-width modulation (PWM) converter is proposed to mitigate the impacts of cyber-attacks. Finally, simulations are performed in MATLAB/Simulink environment to demonstrate the effectiveness of the proposed approaches.","PeriodicalId":136285,"journal":{"name":"2021 IEEE 4th International Conference on Renewable Energy and Power Engineering (REPE)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133069380","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 : 2021-10-09DOI: 10.1109/REPE52765.2021.9617027
Xuejiaoluo
The flue gas flow field at the inlet of the bag filter of a coal-fired once-through boiler of a 1,000 MW ultra-supercritical variable pressure operation is uneven. The high temperature of the local flue gas will trigger the start of the water spray desuperheater system, which will easily lead to water vapour condensation and block the bag. The flow field of the flue at the inlet of the dust collector was tested, and on this basis, a numerical simulation was carried out, and finally, a baffle installation plan was designed. The flow field test results after the implementation of the baffle modification show that the uniformity of the inlet flue gas temperature and flue gas velocity distribution of the bag filter has been significantly improved.
{"title":"Numerical Simulation and Optimization of Flue Gas Flow Field at the Inlet of Bag Filter in a 1000 MW Power Station Boiler","authors":"Xuejiaoluo","doi":"10.1109/REPE52765.2021.9617027","DOIUrl":"https://doi.org/10.1109/REPE52765.2021.9617027","url":null,"abstract":"The flue gas flow field at the inlet of the bag filter of a coal-fired once-through boiler of a 1,000 MW ultra-supercritical variable pressure operation is uneven. The high temperature of the local flue gas will trigger the start of the water spray desuperheater system, which will easily lead to water vapour condensation and block the bag. The flow field of the flue at the inlet of the dust collector was tested, and on this basis, a numerical simulation was carried out, and finally, a baffle installation plan was designed. The flow field test results after the implementation of the baffle modification show that the uniformity of the inlet flue gas temperature and flue gas velocity distribution of the bag filter has been significantly improved.","PeriodicalId":136285,"journal":{"name":"2021 IEEE 4th International Conference on Renewable Energy and Power Engineering (REPE)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133308721","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 : 2021-10-09DOI: 10.1109/REPE52765.2021.9617065
Pengfei Zhang, Shunchao Wang, Zhao He, Tuo Zhou, Hua Ye, Ning Zhang
In order to adapt the intermittency and volatility of renewable energy in power system, it is necessary to improve the frequency regulation ability of the existing large-scale coal-fired power units, which is significant to system stability and flexibility. Flexible energy facilities, such as high-voltage electrode boiler, can be integrated into coal-fired power units to participate in frequency regulation service. One of the key issues of the integrated scheme is how to dispatch high-voltage electrode boiler properly. To achieve it, this paper proposes an optimal economic scheduling approach for electrode boilers based on two-stage stochastic programming. Statistical characteristics of the AGC signal, the auxiliary service market rules and performances of different units are fully considered in the process. We finally determine the optimal operating base point and output of the electrode boiler in frequency regulation. Compared with the stochastic simulation using Monte Carlo approach, this approach is much less computationally heavy and easier to implement. A power plant case shows that the reasonable scheduling of the highvoltage electrode boiler using the proposed approach can realize the complementary advantages of different units, thereby efficiently improving the regulation performance and revenue.
{"title":"Optimal Economic Dispatching Approach of High-Voltage Electrode Boiler Combined with Coal-Fired Power Units to Participate in Frequency Regulation Service Based on Two-Stage Stochastic Programming","authors":"Pengfei Zhang, Shunchao Wang, Zhao He, Tuo Zhou, Hua Ye, Ning Zhang","doi":"10.1109/REPE52765.2021.9617065","DOIUrl":"https://doi.org/10.1109/REPE52765.2021.9617065","url":null,"abstract":"In order to adapt the intermittency and volatility of renewable energy in power system, it is necessary to improve the frequency regulation ability of the existing large-scale coal-fired power units, which is significant to system stability and flexibility. Flexible energy facilities, such as high-voltage electrode boiler, can be integrated into coal-fired power units to participate in frequency regulation service. One of the key issues of the integrated scheme is how to dispatch high-voltage electrode boiler properly. To achieve it, this paper proposes an optimal economic scheduling approach for electrode boilers based on two-stage stochastic programming. Statistical characteristics of the AGC signal, the auxiliary service market rules and performances of different units are fully considered in the process. We finally determine the optimal operating base point and output of the electrode boiler in frequency regulation. Compared with the stochastic simulation using Monte Carlo approach, this approach is much less computationally heavy and easier to implement. A power plant case shows that the reasonable scheduling of the highvoltage electrode boiler using the proposed approach can realize the complementary advantages of different units, thereby efficiently improving the regulation performance and revenue.","PeriodicalId":136285,"journal":{"name":"2021 IEEE 4th International Conference on Renewable Energy and Power Engineering (REPE)","volume":"84 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134162858","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 : 2021-10-09DOI: 10.1109/REPE52765.2021.9617082
Hang Li, Kai Yuan, Yi Song, Chongbo Sun, Kai Hou
Due to the close interaction between different types of energy system, the accident in one system may spread to others, which will affect the operation of RIES. As a result, The event tree analysis (ETA) is adopted to describe how the initial accident propagates among systems step by step. Then, A probabilistic energy flow calculation method considering the uncertainties including source-load fluctuation and component unavailability rate can be developed. A test system with 119 nodes is investigated to verify the effectiveness of the proposed method.
{"title":"Probalistic Energy Flow Calculation Method based on Event Tree Analysis","authors":"Hang Li, Kai Yuan, Yi Song, Chongbo Sun, Kai Hou","doi":"10.1109/REPE52765.2021.9617082","DOIUrl":"https://doi.org/10.1109/REPE52765.2021.9617082","url":null,"abstract":"Due to the close interaction between different types of energy system, the accident in one system may spread to others, which will affect the operation of RIES. As a result, The event tree analysis (ETA) is adopted to describe how the initial accident propagates among systems step by step. Then, A probabilistic energy flow calculation method considering the uncertainties including source-load fluctuation and component unavailability rate can be developed. A test system with 119 nodes is investigated to verify the effectiveness of the proposed method.","PeriodicalId":136285,"journal":{"name":"2021 IEEE 4th International Conference on Renewable Energy and Power Engineering (REPE)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128582989","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 : 2021-10-09DOI: 10.1109/REPE52765.2021.9617093
Yuhan Liu, Changzheng Gao, Lei Zhu, Y. Guo, Mingrui Zhao
China has announced the dual carbon targets in 2020, to achieve carbon peak before 2030 and neutralization by 2060. Many studies have forecasted the structures of China's energy as well as pathways and measures. Considering the characteristics of electric power system and the electrification development, this study proposed an assessment strategy to analyze the applicability of pathways to electric carbon peak in a region. Taking a certain region for an example, this paper comes up with two scenarios, high imported power and high nuclear capacity, by using the optimization model. Then, it compares these two pathways through evaluating the economic efficiency, reliability and security of power system, and carbon targets. Though lower cost per kWh of high nuclear scenario, taking into account the power system reliability and total carbon emission level, a high receiving ratio of power is a better choice for this certain region.
{"title":"Study of Regional Pathway to Carbon Peak in Electric Power Section","authors":"Yuhan Liu, Changzheng Gao, Lei Zhu, Y. Guo, Mingrui Zhao","doi":"10.1109/REPE52765.2021.9617093","DOIUrl":"https://doi.org/10.1109/REPE52765.2021.9617093","url":null,"abstract":"China has announced the dual carbon targets in 2020, to achieve carbon peak before 2030 and neutralization by 2060. Many studies have forecasted the structures of China's energy as well as pathways and measures. Considering the characteristics of electric power system and the electrification development, this study proposed an assessment strategy to analyze the applicability of pathways to electric carbon peak in a region. Taking a certain region for an example, this paper comes up with two scenarios, high imported power and high nuclear capacity, by using the optimization model. Then, it compares these two pathways through evaluating the economic efficiency, reliability and security of power system, and carbon targets. Though lower cost per kWh of high nuclear scenario, taking into account the power system reliability and total carbon emission level, a high receiving ratio of power is a better choice for this certain region.","PeriodicalId":136285,"journal":{"name":"2021 IEEE 4th International Conference on Renewable Energy and Power Engineering (REPE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129158451","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 : 2021-10-09DOI: 10.1109/REPE52765.2021.9617025
Zhiping Cheng, Dongqiang Jia, Zhongwen Li, H. Zhang
Doubly-Fed Wind Power Generator (DFWPG) has an important application in the frequency response of wind power system. However, it is difficult to provide effective support for wind power system frequency regulation only by using DFWPG. To solve the problem, the energy storage system and the DFWPG are combined to involve in the frequency regulation of wind power system in this paper. The DFWPG is controlled by the virtual inertia frequency regulation and the pitch control. The output power of the energy storage system is adjusted by using the droop control. The simulation results show that the frequency stability can be effectively improved by introducing the wind-storage combined frequency regulation system.
{"title":"The Wind-Storage Joint Frequency for Wind Power System to Enhance System Stability","authors":"Zhiping Cheng, Dongqiang Jia, Zhongwen Li, H. Zhang","doi":"10.1109/REPE52765.2021.9617025","DOIUrl":"https://doi.org/10.1109/REPE52765.2021.9617025","url":null,"abstract":"Doubly-Fed Wind Power Generator (DFWPG) has an important application in the frequency response of wind power system. However, it is difficult to provide effective support for wind power system frequency regulation only by using DFWPG. To solve the problem, the energy storage system and the DFWPG are combined to involve in the frequency regulation of wind power system in this paper. The DFWPG is controlled by the virtual inertia frequency regulation and the pitch control. The output power of the energy storage system is adjusted by using the droop control. The simulation results show that the frequency stability can be effectively improved by introducing the wind-storage combined frequency regulation system.","PeriodicalId":136285,"journal":{"name":"2021 IEEE 4th International Conference on Renewable Energy and Power Engineering (REPE)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121875778","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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