Pub Date : 2022-07-28DOI: 10.1109/ICPET55165.2022.9918472
Dongrong Jiang, Junjie Zhang, Wentao Zhang, Chao Yang, Y. Jia
The frequency range of forced oscillation is wide distributed due to various types of disturbances, thus the evaluation of generator damping under different forced oscillation is crucial for the stable operation of modern power system. This paper is intended to explore the damping characteristics of generator under forced oscillation with different oscillation frequencies. Firstly, the energy dissipation of the generator was analyzed based on the oscillating energy flow method. Secondly, the energy dissipation of generator components such as excitation control system, governor control system and other windings of the generator was further investigated. Finally, three scenarios considering internal or external disturbance locations were tested in the dual-machine system to explore the energy dissipation variation of each generator component at different frequencies. Simulation results show that the generator with disturbance inside may provide positive damping at a certain frequency, however, the energy emitted by the source device is much larger than other non-source device, which can be used as an indication for the precise location of oscillation source.
{"title":"Generator Damping Evaluation Considering Different Forced Oscillation Sources","authors":"Dongrong Jiang, Junjie Zhang, Wentao Zhang, Chao Yang, Y. Jia","doi":"10.1109/ICPET55165.2022.9918472","DOIUrl":"https://doi.org/10.1109/ICPET55165.2022.9918472","url":null,"abstract":"The frequency range of forced oscillation is wide distributed due to various types of disturbances, thus the evaluation of generator damping under different forced oscillation is crucial for the stable operation of modern power system. This paper is intended to explore the damping characteristics of generator under forced oscillation with different oscillation frequencies. Firstly, the energy dissipation of the generator was analyzed based on the oscillating energy flow method. Secondly, the energy dissipation of generator components such as excitation control system, governor control system and other windings of the generator was further investigated. Finally, three scenarios considering internal or external disturbance locations were tested in the dual-machine system to explore the energy dissipation variation of each generator component at different frequencies. Simulation results show that the generator with disturbance inside may provide positive damping at a certain frequency, however, the energy emitted by the source device is much larger than other non-source device, which can be used as an indication for the precise location of oscillation source.","PeriodicalId":355634,"journal":{"name":"2022 4th International Conference on Power and Energy Technology (ICPET)","volume":"95 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126959925","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 : 2022-07-28DOI: 10.1109/ICPET55165.2022.9918272
Fang Liu, Min Li, Gang Wu, Ruiguang Ma, Tianwen Zheng
With the increase of the proportion of new energy in the power system, the quantitative evaluation of their effect on power and electricity balance gains more and more attention. Due to the uncertainty and intermittence of the output power, it is difficult for the pure wind-solar hybrid system to satisfy the load demand perfectly. As for the mismatch between the load demand and the output power of new energy, the energy storage is necessary. In order to analyze the effect of pure wind-solar-storage hybrid on power balance, this paper firstly analyzes the daily fluctuation and seasonal characteristics of the output of new energy. It is found that the output confidence can be recognized as a key factor for evaluating the effect of wind plants and photovoltaic power stations on ensuring the power supply. Then, a capacity configuration method of pure wind-solar-storage hybrid system in micro-grid is proposed. Case analysis verifies the validity of the proposed method. By considering the output confidence, the proposed method is helpful for evaluating the effect of new energy on power balance quantitatively.
{"title":"A Capacity Configuration Method of Pure Wind-Solar-storage Hybrid System in Micro-grid Considering Output Confidence","authors":"Fang Liu, Min Li, Gang Wu, Ruiguang Ma, Tianwen Zheng","doi":"10.1109/ICPET55165.2022.9918272","DOIUrl":"https://doi.org/10.1109/ICPET55165.2022.9918272","url":null,"abstract":"With the increase of the proportion of new energy in the power system, the quantitative evaluation of their effect on power and electricity balance gains more and more attention. Due to the uncertainty and intermittence of the output power, it is difficult for the pure wind-solar hybrid system to satisfy the load demand perfectly. As for the mismatch between the load demand and the output power of new energy, the energy storage is necessary. In order to analyze the effect of pure wind-solar-storage hybrid on power balance, this paper firstly analyzes the daily fluctuation and seasonal characteristics of the output of new energy. It is found that the output confidence can be recognized as a key factor for evaluating the effect of wind plants and photovoltaic power stations on ensuring the power supply. Then, a capacity configuration method of pure wind-solar-storage hybrid system in micro-grid is proposed. Case analysis verifies the validity of the proposed method. By considering the output confidence, the proposed method is helpful for evaluating the effect of new energy on power balance quantitatively.","PeriodicalId":355634,"journal":{"name":"2022 4th International Conference on Power and Energy Technology (ICPET)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125694388","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 : 2022-07-28DOI: 10.1109/ICPET55165.2022.9918348
T. Zheng, Gang Liu, Wei Cheng, Pingzhao Hu, Y. Wang
Source-load scheduling is based on multi-energy-load forecasting. The integrated energy system mainly includes three types of energy: electricity, cooling and heating. Studying the correlation among electricity, cooling and heating may improve the accuracy of multi-energy-load forecasting. This paper considers the correlation of three energy sources, fully analyzes the correlation, and applies the correlation of the three in the forecasting model. This paper proposes a CL-MDT (CNN-LSTM-Multi-Decoder-Transformer) model for multi-energy-load forecasting. The model is based on the Transformer, and the Multi-Head Attention part in the Encoder is replaced by a 2dimensional 3*3 CNN (Convolutional Neural Network) feature extraction module for feature extraction of data. And a 1dimensional CNN feature extraction module and LSTM structure are added to the Decoder. The structure of single Encoder and multiple Decoders is used in this paper to realize the application of the correlation of the three in the forecasting model. Finally, the model is tested on public datasets and the forecasting results of CL-MDT are compared with that of LSTM model for multi-energy-load joint forecasting. The results show that the CL-MDT model proposed in this paper has better forecasting accuracy.
{"title":"A CL-MDT Method of Multi-energy Load Forecasting in Integrated Energy System","authors":"T. Zheng, Gang Liu, Wei Cheng, Pingzhao Hu, Y. Wang","doi":"10.1109/ICPET55165.2022.9918348","DOIUrl":"https://doi.org/10.1109/ICPET55165.2022.9918348","url":null,"abstract":"Source-load scheduling is based on multi-energy-load forecasting. The integrated energy system mainly includes three types of energy: electricity, cooling and heating. Studying the correlation among electricity, cooling and heating may improve the accuracy of multi-energy-load forecasting. This paper considers the correlation of three energy sources, fully analyzes the correlation, and applies the correlation of the three in the forecasting model. This paper proposes a CL-MDT (CNN-LSTM-Multi-Decoder-Transformer) model for multi-energy-load forecasting. The model is based on the Transformer, and the Multi-Head Attention part in the Encoder is replaced by a 2dimensional 3*3 CNN (Convolutional Neural Network) feature extraction module for feature extraction of data. And a 1dimensional CNN feature extraction module and LSTM structure are added to the Decoder. The structure of single Encoder and multiple Decoders is used in this paper to realize the application of the correlation of the three in the forecasting model. Finally, the model is tested on public datasets and the forecasting results of CL-MDT are compared with that of LSTM model for multi-energy-load joint forecasting. The results show that the CL-MDT model proposed in this paper has better forecasting accuracy.","PeriodicalId":355634,"journal":{"name":"2022 4th International Conference on Power and Energy Technology (ICPET)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126743272","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 : 2022-07-28DOI: 10.1109/ICPET55165.2022.9918359
Wang Mengjiao, Tan Zhenhao, Zhao Bo, Hu Yunfeng
Aiming at extracting fault features of wind turbine bearing vibration signals, a bearing fault diagnosis method is proposed that based on multi-domain features extraction and deep modeling. Firstly, the multi-domain features of the wind turbine bearing vibration signal are extracted, including time-domain features, frequency-domain features, and time-frequency domain features after Ensemble Empirical Mode Decomposition (EEMD) decomposition. Secondly, the Random Forest (RF) is used to reduce the data dimension of the multi-domain feature set, delete the features irrelevant to the classification, and improve the accuracy of fault diagnosis. Finally, a wind turbine fault diagnosis model is established based on DBN, and the model is verified with the CWRU data set and the actual operation data of Jiangxi wind farm. The experimental results show that the fault classification accuracy of the proposed model is above 94.4%, which is higher than the comparison method. The superiority of this method in the extraction of wind turbine bearing fault information is confirmed.
{"title":"Wind Turbine Bearing Fault Diagnosis Method Based on Multi-domain Feature Extraction","authors":"Wang Mengjiao, Tan Zhenhao, Zhao Bo, Hu Yunfeng","doi":"10.1109/ICPET55165.2022.9918359","DOIUrl":"https://doi.org/10.1109/ICPET55165.2022.9918359","url":null,"abstract":"Aiming at extracting fault features of wind turbine bearing vibration signals, a bearing fault diagnosis method is proposed that based on multi-domain features extraction and deep modeling. Firstly, the multi-domain features of the wind turbine bearing vibration signal are extracted, including time-domain features, frequency-domain features, and time-frequency domain features after Ensemble Empirical Mode Decomposition (EEMD) decomposition. Secondly, the Random Forest (RF) is used to reduce the data dimension of the multi-domain feature set, delete the features irrelevant to the classification, and improve the accuracy of fault diagnosis. Finally, a wind turbine fault diagnosis model is established based on DBN, and the model is verified with the CWRU data set and the actual operation data of Jiangxi wind farm. The experimental results show that the fault classification accuracy of the proposed model is above 94.4%, which is higher than the comparison method. The superiority of this method in the extraction of wind turbine bearing fault information is confirmed.","PeriodicalId":355634,"journal":{"name":"2022 4th International Conference on Power and Energy Technology (ICPET)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126514933","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 : 2022-07-28DOI: 10.1109/ICPET55165.2022.9918423
Qibin Zhou, Jingjie Ye, Yanyong Mao, Zhen Yang
Transient electromagnetic field will endanger the safety and normal operation of personnel and equipment inside the an ultra high-rise building when lightning strikes at it. The electromagnetic field method is more efficient to analyze the electromagnetic environment of lightning strike at large and complex buildings. By adopting the finite element method (FEM) in the frequency domain, the electromagnetic field method is used to evaluate the magnetic field in a building and validated by comparing with experiment results. With this method, a simplified model of the 488.9m ultra high-rise building, Chengdu Zhonghai Tower, is established and the magnetic field distribution inside this building is evaluated and analyzed. The simulation results are valuable for optimizing the installation of sensitive equipment in this building and can also give guidelines for improving the design of the lightning protection system (LPS) of ultra high-rise buildings.
{"title":"Numerical Study on Transient Magnetic Field inside Ultra High-Rise Building during Lightning Stroke","authors":"Qibin Zhou, Jingjie Ye, Yanyong Mao, Zhen Yang","doi":"10.1109/ICPET55165.2022.9918423","DOIUrl":"https://doi.org/10.1109/ICPET55165.2022.9918423","url":null,"abstract":"Transient electromagnetic field will endanger the safety and normal operation of personnel and equipment inside the an ultra high-rise building when lightning strikes at it. The electromagnetic field method is more efficient to analyze the electromagnetic environment of lightning strike at large and complex buildings. By adopting the finite element method (FEM) in the frequency domain, the electromagnetic field method is used to evaluate the magnetic field in a building and validated by comparing with experiment results. With this method, a simplified model of the 488.9m ultra high-rise building, Chengdu Zhonghai Tower, is established and the magnetic field distribution inside this building is evaluated and analyzed. The simulation results are valuable for optimizing the installation of sensitive equipment in this building and can also give guidelines for improving the design of the lightning protection system (LPS) of ultra high-rise buildings.","PeriodicalId":355634,"journal":{"name":"2022 4th International Conference on Power and Energy Technology (ICPET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129173256","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 : 2022-07-28DOI: 10.1109/ICPET55165.2022.9918309
Fuhong Cui, Baoge Zhang
As the penetration of the distributed energy source in the grid is becoming higher and higher. However, power electronic converters in micro-grid seriously harm the stability of power system, due to the lack of necessary inertia and damping. To deal with the problem, Virtual synchronous machine (VSG) control is applied to simulate the inertia and damping of synchronous generator (SG), However, constant moment of inertia and damping coefficient cannot ensure the power and frequency regulation performance, and cannot make the system frequency and power response stability and rapid when the disturbance occurs. Therefore, the paper proposes a VSG rotational inertia and damping coefficient adaptive control strategy to improve the rapidity and stability of the power system. Firstly, the working principle of VSG is introduced, Secondly, Based on VSG control, a cooperative adaptive control strategy of inertia and damping coefficient is proposed, The stability analysis under the change of corresponding parameters is given; Finally, the simulation results of VSG under fixed and adaptive control are compared by MATLAB/Simulink simulation, Testify the effectiveness of the proposed control strategy.
{"title":"Adaptive Control Strategy for Moment of Inertia and Damping Coefficient of Virtual Synchronous Generator","authors":"Fuhong Cui, Baoge Zhang","doi":"10.1109/ICPET55165.2022.9918309","DOIUrl":"https://doi.org/10.1109/ICPET55165.2022.9918309","url":null,"abstract":"As the penetration of the distributed energy source in the grid is becoming higher and higher. However, power electronic converters in micro-grid seriously harm the stability of power system, due to the lack of necessary inertia and damping. To deal with the problem, Virtual synchronous machine (VSG) control is applied to simulate the inertia and damping of synchronous generator (SG), However, constant moment of inertia and damping coefficient cannot ensure the power and frequency regulation performance, and cannot make the system frequency and power response stability and rapid when the disturbance occurs. Therefore, the paper proposes a VSG rotational inertia and damping coefficient adaptive control strategy to improve the rapidity and stability of the power system. Firstly, the working principle of VSG is introduced, Secondly, Based on VSG control, a cooperative adaptive control strategy of inertia and damping coefficient is proposed, The stability analysis under the change of corresponding parameters is given; Finally, the simulation results of VSG under fixed and adaptive control are compared by MATLAB/Simulink simulation, Testify the effectiveness of the proposed control strategy.","PeriodicalId":355634,"journal":{"name":"2022 4th International Conference on Power and Energy Technology (ICPET)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133577649","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 : 2022-07-28DOI: 10.1109/ICPET55165.2022.9918315
Rui Wang, Xiaoxia Li
Levied CO2 emission tax on power plants is an effective way to realize China’s emission reduction targets, but it also will push up the price level and cause negative feedback on real economy. Introducing tax rebate mechanism is a good way to solve the problem above. Based on the concept aboved, and considering the oligopoly market structure at generation side, an optimization model for emission tax of power plants considering tax rebates and it’s embedded equilibrium model for power market was established in this paper. An example showed that the optimization model for emission tax of power plants proposed in this paper can conducive to the realization of energy-saving emission reduction targets and hold down power price level. The optimization model for emission tax proposed in this paper has practical significance.
{"title":"Optimization Model for CO2 Emission Tax of Power Plants Considering Tax Rebates under the Target of Carbon Emission Reduction","authors":"Rui Wang, Xiaoxia Li","doi":"10.1109/ICPET55165.2022.9918315","DOIUrl":"https://doi.org/10.1109/ICPET55165.2022.9918315","url":null,"abstract":"Levied CO2 emission tax on power plants is an effective way to realize China’s emission reduction targets, but it also will push up the price level and cause negative feedback on real economy. Introducing tax rebate mechanism is a good way to solve the problem above. Based on the concept aboved, and considering the oligopoly market structure at generation side, an optimization model for emission tax of power plants considering tax rebates and it’s embedded equilibrium model for power market was established in this paper. An example showed that the optimization model for emission tax of power plants proposed in this paper can conducive to the realization of energy-saving emission reduction targets and hold down power price level. The optimization model for emission tax proposed in this paper has practical significance.","PeriodicalId":355634,"journal":{"name":"2022 4th International Conference on Power and Energy Technology (ICPET)","volume":"186 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133684214","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 : 2022-07-28DOI: 10.1109/ICPET55165.2022.9918366
Dong Yin, Wen-bin Yu, Qiying Li, Xiangguo Liu, Bin Wan, Xiao Liu, Liang Ran
Transient overvoltage of power grid threatens the high voltage insulation and safe operation of power equipment. At present, there is no effective measure of transient overvoltage. In this paper, a transient overvoltage optical monitoring method based on capacitor voltage transformer (CVT) is proposed. A capacitor C3for transient measuring is connected to the low voltage end of capacitive voltage divider of conventional CVT. Optical voltage sensor (OVS) is used to measure transient overvoltage. A CVT prototype with transient overvoltage measurement function is developed, and lightning impulse voltage tests are carried out. The test results show that the prototype can meet the requirements of transient overvoltage measurement, and the effectiveness of the proposed scheme is verified. The optical voltage measuring module is used to measure and analyze the transient voltage at the ground point caused by the transient ground potential rise found in the test process, which has certain guiding significance for the design and selection of grounding conductors at the ground points and electromagnetic compatibility design of secondary equipment connected with the primary equipment.
{"title":"Experimental Study on Transient Overvoltage Measurement Based on Capacitive Voltage Transformer","authors":"Dong Yin, Wen-bin Yu, Qiying Li, Xiangguo Liu, Bin Wan, Xiao Liu, Liang Ran","doi":"10.1109/ICPET55165.2022.9918366","DOIUrl":"https://doi.org/10.1109/ICPET55165.2022.9918366","url":null,"abstract":"Transient overvoltage of power grid threatens the high voltage insulation and safe operation of power equipment. At present, there is no effective measure of transient overvoltage. In this paper, a transient overvoltage optical monitoring method based on capacitor voltage transformer (CVT) is proposed. A capacitor C3for transient measuring is connected to the low voltage end of capacitive voltage divider of conventional CVT. Optical voltage sensor (OVS) is used to measure transient overvoltage. A CVT prototype with transient overvoltage measurement function is developed, and lightning impulse voltage tests are carried out. The test results show that the prototype can meet the requirements of transient overvoltage measurement, and the effectiveness of the proposed scheme is verified. The optical voltage measuring module is used to measure and analyze the transient voltage at the ground point caused by the transient ground potential rise found in the test process, which has certain guiding significance for the design and selection of grounding conductors at the ground points and electromagnetic compatibility design of secondary equipment connected with the primary equipment.","PeriodicalId":355634,"journal":{"name":"2022 4th International Conference on Power and Energy Technology (ICPET)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131079332","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 : 2022-07-28DOI: 10.1109/ICPET55165.2022.9918228
Yufang Liu, Di Huang, Cheng Huang, Jiaqi Xu, Taotao Li, Shixi Ma
The design of the transaction mechanism is one of the key points in the construction of the power market. This paper presents an energy trading method based on VCG auction mechanism for multi-type prosumer market. Firstly, the basic theory of VCG auction mechanism is introduced. Then, the mechanism of VCG market framework is designed. For the multi-type markets, an auxiliary parameter is used to establish the augmented Lagrangian model. The objective function of the model is transformed into several sub-problems, and the alternating direction multiplier method (ADMM) is used to solve the multi-block problem. In the real-time market phase, the stochastic nature of renewable power generation and fixed load is considered for real-time transactions with the power grid. Finally, the simulation results show that the proposed market transaction mechanism is economically beneficial to prosumers and the power grid, has high computational efficiency, and is beneficial to the sustainable development of the prosumer market.
{"title":"Energy Trading for Multi-type Prosumer in Context of Electricity-Carbon Coupled Market","authors":"Yufang Liu, Di Huang, Cheng Huang, Jiaqi Xu, Taotao Li, Shixi Ma","doi":"10.1109/ICPET55165.2022.9918228","DOIUrl":"https://doi.org/10.1109/ICPET55165.2022.9918228","url":null,"abstract":"The design of the transaction mechanism is one of the key points in the construction of the power market. This paper presents an energy trading method based on VCG auction mechanism for multi-type prosumer market. Firstly, the basic theory of VCG auction mechanism is introduced. Then, the mechanism of VCG market framework is designed. For the multi-type markets, an auxiliary parameter is used to establish the augmented Lagrangian model. The objective function of the model is transformed into several sub-problems, and the alternating direction multiplier method (ADMM) is used to solve the multi-block problem. In the real-time market phase, the stochastic nature of renewable power generation and fixed load is considered for real-time transactions with the power grid. Finally, the simulation results show that the proposed market transaction mechanism is economically beneficial to prosumers and the power grid, has high computational efficiency, and is beneficial to the sustainable development of the prosumer market.","PeriodicalId":355634,"journal":{"name":"2022 4th International Conference on Power and Energy Technology (ICPET)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131186741","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 : 2022-07-28DOI: 10.1109/ICPET55165.2022.9918464
Jie Wu, Rongsen Luo, Man Zhang, Yumin Peng, Shi Jing, Qixing Huang
Due to the insulation fails caused by complex factors, such as the manufacture factors, transportation and complicated working environment, inter-turn short circuit fault is one of the frequent failures of shunt reactor, at the early stage of whom, its current is not high enough to trigger the protection equipment. However, the current in the shorted turn is very high, which causes serious copper loss, resulting in high temperature rise. In severe case, it will cause fire accident and explosion. Thus, it’s important to design a sensitive and reliable method to detect the inter-turn short circuit fault at its early stage. In this paper, a method based on the power loss factor (PLF) considering both the activate power and equivalent resistance of reactor, is proposed to detect the inter-turn short circuit fault of an air-core shunt reactor considering the effect of insulation resistance. Taking a BKDCL−20000/35 dry-type air-core shunt reactor as an example, the inter-turn short circuit faults occur at different axial heights and coil layers are investigated. The electrical parameters, including equivalent resistance, equivalent inductance, active power, reactive power etc. are presented and comparison is implemented between the normal condition and failure conditions. The current and active power of the shorted turn is calculated and analyzed, which are used to explain the parameters variation of the reactor when inter-turn short circuit fault occurs. Finally, PLF under various working conditions is computed and presented, which provide an alternative to monitor the inter-turn short circuit fault.
{"title":"A New Method to Detect the Inter-Turn Short Circuit Fault of Dry-Type Air-Core Shunt Reactor","authors":"Jie Wu, Rongsen Luo, Man Zhang, Yumin Peng, Shi Jing, Qixing Huang","doi":"10.1109/ICPET55165.2022.9918464","DOIUrl":"https://doi.org/10.1109/ICPET55165.2022.9918464","url":null,"abstract":"Due to the insulation fails caused by complex factors, such as the manufacture factors, transportation and complicated working environment, inter-turn short circuit fault is one of the frequent failures of shunt reactor, at the early stage of whom, its current is not high enough to trigger the protection equipment. However, the current in the shorted turn is very high, which causes serious copper loss, resulting in high temperature rise. In severe case, it will cause fire accident and explosion. Thus, it’s important to design a sensitive and reliable method to detect the inter-turn short circuit fault at its early stage. In this paper, a method based on the power loss factor (PLF) considering both the activate power and equivalent resistance of reactor, is proposed to detect the inter-turn short circuit fault of an air-core shunt reactor considering the effect of insulation resistance. Taking a BKDCL−20000/35 dry-type air-core shunt reactor as an example, the inter-turn short circuit faults occur at different axial heights and coil layers are investigated. The electrical parameters, including equivalent resistance, equivalent inductance, active power, reactive power etc. are presented and comparison is implemented between the normal condition and failure conditions. The current and active power of the shorted turn is calculated and analyzed, which are used to explain the parameters variation of the reactor when inter-turn short circuit fault occurs. Finally, PLF under various working conditions is computed and presented, which provide an alternative to monitor the inter-turn short circuit fault.","PeriodicalId":355634,"journal":{"name":"2022 4th International Conference on Power and Energy Technology (ICPET)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134333532","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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