The development of gas bubbles is normal and nearly unavoidable in power transformer operation. Bubbles are the result of different stresses such as thermal, electric, and vibration that may lead to insulation failure in oil transformers. Recent studies emphasised on the dynamic effects of bubbles under different non-electric fields in engineering. However, additional investigations are desirable on the behaviours and mechanisms of bubbles under combined stresses of mechanical vibration and electric field. The present study investigates numerically the dynamic behaviours of a monodisperse bubble swelling in an oil transformer exposed to vibrations and an electric field. An established two-dimensional model was used to solve the Navier-Stokes, vibrational and electric field equations. The level-set approach was adopted to track the trajectory and shape of the soaring bubble. The influence of the electric field, vibration frequency, amplitude, and bubble size on air bubble motion and deformation sifted. The outcomes reveal that the bubble size, electric field, and vibration amplitude influence dynamic bubble characteristics. The electric field revealed its contribution to the bubble deformation rising from the initial point. The bubble rising rate showed a dependence on bubble size and vibration parameters.
{"title":"Migration Dynamics of Gas Bubble Excited by External AC Electric and Mechanical Vibration Stresses","authors":"Niyomugabo Emmanuel Ladislas, Qingmin Li, Q. Liu, Yunpeng Li, Wu Jie, Huang Weimin","doi":"10.1109/ICPES56491.2022.10073076","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10073076","url":null,"abstract":"The development of gas bubbles is normal and nearly unavoidable in power transformer operation. Bubbles are the result of different stresses such as thermal, electric, and vibration that may lead to insulation failure in oil transformers. Recent studies emphasised on the dynamic effects of bubbles under different non-electric fields in engineering. However, additional investigations are desirable on the behaviours and mechanisms of bubbles under combined stresses of mechanical vibration and electric field. The present study investigates numerically the dynamic behaviours of a monodisperse bubble swelling in an oil transformer exposed to vibrations and an electric field. An established two-dimensional model was used to solve the Navier-Stokes, vibrational and electric field equations. The level-set approach was adopted to track the trajectory and shape of the soaring bubble. The influence of the electric field, vibration frequency, amplitude, and bubble size on air bubble motion and deformation sifted. The outcomes reveal that the bubble size, electric field, and vibration amplitude influence dynamic bubble characteristics. The electric field revealed its contribution to the bubble deformation rising from the initial point. The bubble rising rate showed a dependence on bubble size and vibration parameters.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"220 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123241307","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 : 2022-12-23DOI: 10.1109/ICPES56491.2022.10073131
Changhao He, Rui Qin, Baojun Xu, Yuyin Zhan, Haifeng Li
Distributed generation (DG) will bring various problems to the relay protection and automation of distribution network, which may also lead to serious consequences of the ungrounded transformer neutral point overvoltage. This paper analyzes the mechanism of power frequency overvoltage at the ungrounded transformer neutral point under single-phase grounding fault. Based on it, this paper studies the influence of DG on neutral point overvoltage after 110kV line fault in detail. Considering that there are rotational DGs and inverter-interfaced DGs (IIDGs) under different control modes, test results show that PQ-controlled DG makes the transformer neutral point voltage exceeds its rated value easiest, and it also has the greatest insulation threat to neutral point overvoltage.
{"title":"Influence of Distributed Generation on Power Frequency Overvoltage Characteristics of Transformer Neutral Point","authors":"Changhao He, Rui Qin, Baojun Xu, Yuyin Zhan, Haifeng Li","doi":"10.1109/ICPES56491.2022.10073131","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10073131","url":null,"abstract":"Distributed generation (DG) will bring various problems to the relay protection and automation of distribution network, which may also lead to serious consequences of the ungrounded transformer neutral point overvoltage. This paper analyzes the mechanism of power frequency overvoltage at the ungrounded transformer neutral point under single-phase grounding fault. Based on it, this paper studies the influence of DG on neutral point overvoltage after 110kV line fault in detail. Considering that there are rotational DGs and inverter-interfaced DGs (IIDGs) under different control modes, test results show that PQ-controlled DG makes the transformer neutral point voltage exceeds its rated value easiest, and it also has the greatest insulation threat to neutral point overvoltage.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129695436","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 : 2022-12-23DOI: 10.1109/ICPES56491.2022.10072947
Qinxing Tian, Jiandong Duan, F. Liu
With the large-scale grid connection of wind power with strong uncertainty, the output of power generation side is uncontrollable, which affects the reliable operation of power system and reduces the social benefits of renewable energy generation. In order to effectively reduce the adverse impact of wind power consumption on power grid, an optimal dispatching model of electricity-gas integrated energy system (EGIES) considering the uncertainty of wind power output is established. Firstly, based on the mathematical model of power grid, natural gas network and coupling equipment, the economic dispatch of integrated energy system (IES) is studied. In addition, the conditional value at risk (CVaR) theory is used to describe the risk loss faced by wind power uncertainty, and the risk loss function evaluated by CVaR theory is introduced into the objective function. Finally, taking IEEE33-24 as an example, it is verified that introducing CVaR into IES scheduling model can effectively reduce the running cost of the system and improve the running security. At the same time, the simulation results also show the influence of the change of confidence level and risk coefficient on IES.
{"title":"Optimal Scheduling of Electricity-Gas Integrated Energy System Based on Conditional Value at Risk Theory","authors":"Qinxing Tian, Jiandong Duan, F. Liu","doi":"10.1109/ICPES56491.2022.10072947","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10072947","url":null,"abstract":"With the large-scale grid connection of wind power with strong uncertainty, the output of power generation side is uncontrollable, which affects the reliable operation of power system and reduces the social benefits of renewable energy generation. In order to effectively reduce the adverse impact of wind power consumption on power grid, an optimal dispatching model of electricity-gas integrated energy system (EGIES) considering the uncertainty of wind power output is established. Firstly, based on the mathematical model of power grid, natural gas network and coupling equipment, the economic dispatch of integrated energy system (IES) is studied. In addition, the conditional value at risk (CVaR) theory is used to describe the risk loss faced by wind power uncertainty, and the risk loss function evaluated by CVaR theory is introduced into the objective function. Finally, taking IEEE33-24 as an example, it is verified that introducing CVaR into IES scheduling model can effectively reduce the running cost of the system and improve the running security. At the same time, the simulation results also show the influence of the change of confidence level and risk coefficient on IES.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"7 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127931966","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 : 2022-12-23DOI: 10.1109/ICPES56491.2022.10072883
Y. Zhang, Jian Chen, Leiqi Zhang, Qiliang Wu
The connection of high penetration of distributed renewable energy sources, e.g. photovoltaic (PV), will bring great challenges to the voltage control of active distribution network (ADN). To better solve the problem of voltage violation caused by massive connection of PV, this paper explores the voltage regulation potential of power to hydrogen (P2H) devices and proposes a coordinated voltage control strategy of ADN with P2H. Firstly, the models of PV, on-load tap changer (OLTC), capacitor bank (CB), energy storage systems (ESS) and other traditional equipment in ADN are established. Secondly, P2H is modeled with consideration of start-stop constraints, output constraints, power constraints, etc. Finally, a voltage coordination control strategy of ADN with P2H is proposed considering both the voltage control effect and regulation cost. The proposed strategy is tested on the improved IEEE33 distribution network, and the simulation results verify its effectiveness in reducing voltage deviation and regulating cost.
光伏(PV)等分布式可再生能源的高渗透率并网，将给有源配电网(ADN)的电压控制带来巨大挑战。为了更好地解决光伏大规模接入带来的电压违和问题，本文探讨了P2H (power To hydrogen)器件的电压调节潜力，提出了ADN与P2H的协同电压控制策略。首先，建立了ADN中PV、有载分接开关(OLTC)、电容器组(CB)、储能系统(ESS)等传统设备的模型;其次，建立了考虑启停约束、输出约束、功率约束等因素的P2H模型;最后，综合考虑电压控制效果和调节成本，提出了一种带P2H的ADN电压协调控制策略。在改进的IEEE33配电网上进行了测试，仿真结果验证了该策略在降低电压偏差和调节成本方面的有效性。
{"title":"Coordinated Voltage Control Strategy of Active Distribution Networks with Consideration of Power to Hydrogen","authors":"Y. Zhang, Jian Chen, Leiqi Zhang, Qiliang Wu","doi":"10.1109/ICPES56491.2022.10072883","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10072883","url":null,"abstract":"The connection of high penetration of distributed renewable energy sources, e.g. photovoltaic (PV), will bring great challenges to the voltage control of active distribution network (ADN). To better solve the problem of voltage violation caused by massive connection of PV, this paper explores the voltage regulation potential of power to hydrogen (P2H) devices and proposes a coordinated voltage control strategy of ADN with P2H. Firstly, the models of PV, on-load tap changer (OLTC), capacitor bank (CB), energy storage systems (ESS) and other traditional equipment in ADN are established. Secondly, P2H is modeled with consideration of start-stop constraints, output constraints, power constraints, etc. Finally, a voltage coordination control strategy of ADN with P2H is proposed considering both the voltage control effect and regulation cost. The proposed strategy is tested on the improved IEEE33 distribution network, and the simulation results verify its effectiveness in reducing voltage deviation and regulating cost.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128536838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
With the large-scale application of microgrid technology in the power system, a large number of single microgrid independent operation mode is not conducive to improving the economic benefits of microgrid, but will also harm the safe operation of the power system. Therefore, in this paper, a coalition-game-theory-based local energy transaction strategy is developed to solve the above problems. Firstly, the traditional model of microgrid in grid-connected mode and the coalitional transaction model are analyzed and established. Moreover, a typical matching method and the Shapley value are applied to calculate and allocate the utility of each valid coalition. And the optimal partition in the network is found by using coalition merge and split operations, a coalition-game-theory-based local energy transaction algorithm is proposed. Compared with the traditional operation mode, the simulation results show that the power transaction scheduling algorithm can effectively promote the cooperative transaction between microgrid, reduce the energy transmission loss, improve the individual utility of microgrid, and help maintain the coalition stability.
{"title":"A Local Energy Transaction Strategy for Networked Microgrids Under Coalitional Game Theory","authors":"Yanbin He, Qian Yu, Zengxin Cao, Yuncheng Chen, Ziyin Shen, Kai Zhang","doi":"10.1109/ICPES56491.2022.10073417","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10073417","url":null,"abstract":"With the large-scale application of microgrid technology in the power system, a large number of single microgrid independent operation mode is not conducive to improving the economic benefits of microgrid, but will also harm the safe operation of the power system. Therefore, in this paper, a coalition-game-theory-based local energy transaction strategy is developed to solve the above problems. Firstly, the traditional model of microgrid in grid-connected mode and the coalitional transaction model are analyzed and established. Moreover, a typical matching method and the Shapley value are applied to calculate and allocate the utility of each valid coalition. And the optimal partition in the network is found by using coalition merge and split operations, a coalition-game-theory-based local energy transaction algorithm is proposed. Compared with the traditional operation mode, the simulation results show that the power transaction scheduling algorithm can effectively promote the cooperative transaction between microgrid, reduce the energy transmission loss, improve the individual utility of microgrid, and help maintain the coalition stability.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121027945","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 : 2022-12-23DOI: 10.1109/ICPES56491.2022.10073339
Sun Yifan, Wang Lin, Y. Cenyu, Zhu Ye, Jin Yi, Dong Weijie
Due to the driven of green development and continuous innovation in information technology, Chinese industrial park is striving to achieve “zero emission” of pollutants through various measures such as waste exchange, recycling, integrated energy utilization, cleaner and smart production, etc. For zero-carbon operation of energy utilization in industrial park, this paper studies the optimal configuration of hybrid energy storage system (ESS) in integrated energy utilization. Firstly, the energy flowing model is analyzed to adapt to the zero-carbon development. Then, considering uncertainties of renewable resources and load, three objectives with various constraints are constructed from investment cost, peak-load shifting and annual carbon emission. Also, the improved non-dominated sorting genetic algorithm (NSGA) is employed to solve it. Simulations on IEEE 33 bus with different green energy demonstrate that the constructed optimization models can achieve the balance of the investment and environmental protection. The proposed improved solving method may raise the convergence of solving nonlinear multiobjective under constrained condition.
{"title":"Optimal Configuration of Hybrid Energy Storage System Catered for Low-Carbon Smart Industrial Park","authors":"Sun Yifan, Wang Lin, Y. Cenyu, Zhu Ye, Jin Yi, Dong Weijie","doi":"10.1109/ICPES56491.2022.10073339","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10073339","url":null,"abstract":"Due to the driven of green development and continuous innovation in information technology, Chinese industrial park is striving to achieve “zero emission” of pollutants through various measures such as waste exchange, recycling, integrated energy utilization, cleaner and smart production, etc. For zero-carbon operation of energy utilization in industrial park, this paper studies the optimal configuration of hybrid energy storage system (ESS) in integrated energy utilization. Firstly, the energy flowing model is analyzed to adapt to the zero-carbon development. Then, considering uncertainties of renewable resources and load, three objectives with various constraints are constructed from investment cost, peak-load shifting and annual carbon emission. Also, the improved non-dominated sorting genetic algorithm (NSGA) is employed to solve it. Simulations on IEEE 33 bus with different green energy demonstrate that the constructed optimization models can achieve the balance of the investment and environmental protection. The proposed improved solving method may raise the convergence of solving nonlinear multiobjective under constrained condition.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116521411","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 : 2022-12-23DOI: 10.1109/ICPES56491.2022.10072503
Lin Li, Chun Yang, Hui Xu, Quanehun Yan, Shuwei Zhou, Hongyu Yang
In the power system integrated with offshore wind farm, energy storage is utilized for active power balance and voltage stability. This paper proposes a coordinated voltage control method for offshore wind farm with three types of reactive power sources. The detailed mathematical model of offshore wind farm with SVG and energy storage is established. By means of reactive power requirement calculation of point of interconnection (POI), the proposed method can compensate reactive power with comprehensive utilization of reactive power sources containing offshore wind farm, static var generator (SVG) system and energy storage. The compensation priority of each reactive power source is determined according to voltage variation conditions, and the reactive power support capability of the wind farm is improved by de-loading control. Based on real offshore wind farm in Jiangsu Province, the effectiveness of proposed voltage control method is verified in PSCAD.
{"title":"Coordinated Voltage Control for Offshore Wind Farm Equipped with SVG and Energy Storage","authors":"Lin Li, Chun Yang, Hui Xu, Quanehun Yan, Shuwei Zhou, Hongyu Yang","doi":"10.1109/ICPES56491.2022.10072503","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10072503","url":null,"abstract":"In the power system integrated with offshore wind farm, energy storage is utilized for active power balance and voltage stability. This paper proposes a coordinated voltage control method for offshore wind farm with three types of reactive power sources. The detailed mathematical model of offshore wind farm with SVG and energy storage is established. By means of reactive power requirement calculation of point of interconnection (POI), the proposed method can compensate reactive power with comprehensive utilization of reactive power sources containing offshore wind farm, static var generator (SVG) system and energy storage. The compensation priority of each reactive power source is determined according to voltage variation conditions, and the reactive power support capability of the wind farm is improved by de-loading control. Based on real offshore wind farm in Jiangsu Province, the effectiveness of proposed voltage control method is verified in PSCAD.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126498202","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 : 2022-12-23DOI: 10.1109/ICPES56491.2022.10073194
Song Cheng, Jing Ren, Xinze Zhou, Min Gao, Meilun Guo, Peng Kou
Nowadays, the accurate prediction of wind power has been a topical and challenging issue. Due to the random and intermittent nature of wind power, traditional models are not sufficient to achieve accurate prediction. Therefore, this paper proposed a wind power probabilistic prediction model considering multiple meteorological factors based on Gaussian process regression (GPR). First, suitable meteorological factors are selected based on correlation analysis between historical meteorological factors and wind power data. Then, GPR model with suitable meteorological factors and historical wind power data as input is used to make probabilistic prediction. The simulation results and error analysis show that the model proposed in this paper is feasible and can effectively improve wind power prediction accuracy.
{"title":"GPR-Based Wind Power Probabilistic Prediction Model Considering Multiple Meteorological Factors","authors":"Song Cheng, Jing Ren, Xinze Zhou, Min Gao, Meilun Guo, Peng Kou","doi":"10.1109/ICPES56491.2022.10073194","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10073194","url":null,"abstract":"Nowadays, the accurate prediction of wind power has been a topical and challenging issue. Due to the random and intermittent nature of wind power, traditional models are not sufficient to achieve accurate prediction. Therefore, this paper proposed a wind power probabilistic prediction model considering multiple meteorological factors based on Gaussian process regression (GPR). First, suitable meteorological factors are selected based on correlation analysis between historical meteorological factors and wind power data. Then, GPR model with suitable meteorological factors and historical wind power data as input is used to make probabilistic prediction. The simulation results and error analysis show that the model proposed in this paper is feasible and can effectively improve wind power prediction accuracy.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122260366","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 : 2022-12-23DOI: 10.1109/ICPES56491.2022.10073413
H. Ran, Li Bing, Wang Jinyang, Huang Siyong, Lu Yihang, Li Xianghao, Yang Ling, Wang Zhidong
With the digitalization, informatization and intelligent development of the power grid, the data transmission quality requirements of electrical equipment are getting higher and higher. Intelligent cable technology of distribution network based on innovative sensor technology is gradually emerging and developing. Temperature data is a vital indicator of the operating conditions of the cable, and communication “pollution” such as data missing, errors and omissions will be generated during the transmission and communication process. This paper proposes a data cleaning method for the abnormal temperature data of intelligent cable that considers the characteristics of the temperature rise of the cable. Based on the characteristics, the interpolation method is used to complete the missing data, and then through the consistency comparison of the temperature and current fitting curves, the processed temperature data is supplied to the operation and maintenance platform after passing through the filter circuit to ensure the accuracy of the data.
{"title":"An Intelligent Cable Core Temperature Abnormal Data Cleaning Method Considering Current-Carrying Temperature Rise Characteristics","authors":"H. Ran, Li Bing, Wang Jinyang, Huang Siyong, Lu Yihang, Li Xianghao, Yang Ling, Wang Zhidong","doi":"10.1109/ICPES56491.2022.10073413","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10073413","url":null,"abstract":"With the digitalization, informatization and intelligent development of the power grid, the data transmission quality requirements of electrical equipment are getting higher and higher. Intelligent cable technology of distribution network based on innovative sensor technology is gradually emerging and developing. Temperature data is a vital indicator of the operating conditions of the cable, and communication “pollution” such as data missing, errors and omissions will be generated during the transmission and communication process. This paper proposes a data cleaning method for the abnormal temperature data of intelligent cable that considers the characteristics of the temperature rise of the cable. Based on the characteristics, the interpolation method is used to complete the missing data, and then through the consistency comparison of the temperature and current fitting curves, the processed temperature data is supplied to the operation and maintenance platform after passing through the filter circuit to ensure the accuracy of the data.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"121 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128492002","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 : 2022-12-23DOI: 10.1109/ICPES56491.2022.10072418
Kaimao Zhou, Zhangjie Liu, Jiawei Li, M. Su
It is well known that constant power loads(CPLs) will lead to system instability due to their negative impedance characteristics. This paper studies the stability of the DC microgrid with multi-converters and CPLs. It is proved that the heterogeneity between the DC-DC converters can overcome the instability of CPLs. Specifically, if the natural frequencies of converters are not all the same, i.e., the converters are heterogeneous, the system without stabilization measures may be stable. Moreover, simulations are performed using MATLAB to verify the effectiveness of the proposed theorem.
{"title":"Stability Analysis in The Stabilization-Free DC Microgrids with CPLs","authors":"Kaimao Zhou, Zhangjie Liu, Jiawei Li, M. Su","doi":"10.1109/ICPES56491.2022.10072418","DOIUrl":"https://doi.org/10.1109/ICPES56491.2022.10072418","url":null,"abstract":"It is well known that constant power loads(CPLs) will lead to system instability due to their negative impedance characteristics. This paper studies the stability of the DC microgrid with multi-converters and CPLs. It is proved that the heterogeneity between the DC-DC converters can overcome the instability of CPLs. Specifically, if the natural frequencies of converters are not all the same, i.e., the converters are heterogeneous, the system without stabilization measures may be stable. Moreover, simulations are performed using MATLAB to verify the effectiveness of the proposed theorem.","PeriodicalId":425438,"journal":{"name":"2022 12th International Conference on Power and Energy Systems (ICPES)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125107743","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：