Pub Date : 2023-03-23DOI: 10.1109/AEEES56888.2023.10114164
Peng Xia, Haitao Chen, Bo Yuan, Jinfang Zhang, Cong Wu, Yichun Gong
With the development and promotion of technologies such as electric hydrogen generation and electric heat generation, terminal energy such as electricity-heat hydrogen shows a significant coupling development trend. In order to scientifically plan the supply structure of primary energy under the carbon neutral vision, it is urgent to consider the coupling transformation path of power generation, electricity-heat, electricity-hydrogen and other types of energy. First of all, based on the optimization principle of traditional energy and power planning models, the idea of energy and power optimization path toward dual carbon goal considering electricity-heat-hydrogen-carbon coupling is proposed. Then, the primary and secondary processing and conversion link models of terminal kerosene gas are established, and the fossil energy conversion link models of terminal heat and hydrogen are established. On this basis, the goal is to optimize the economy. An energy and power optimization planning model considering electricity-heat-hydrogen-carbon coupling is established, and a method is proposed. Finally, taking the path toward carbon peaking carbon neutrality goals of China’s energy power as an example, simulation analysis is carried out to verify the effectiveness of the proposed method.
{"title":"Study on Optimization Method of Energy and Power Path toward Dual Carbon Goal Considering Electricity-Heat-Hydrogen-Carbon Coupling","authors":"Peng Xia, Haitao Chen, Bo Yuan, Jinfang Zhang, Cong Wu, Yichun Gong","doi":"10.1109/AEEES56888.2023.10114164","DOIUrl":"https://doi.org/10.1109/AEEES56888.2023.10114164","url":null,"abstract":"With the development and promotion of technologies such as electric hydrogen generation and electric heat generation, terminal energy such as electricity-heat hydrogen shows a significant coupling development trend. In order to scientifically plan the supply structure of primary energy under the carbon neutral vision, it is urgent to consider the coupling transformation path of power generation, electricity-heat, electricity-hydrogen and other types of energy. First of all, based on the optimization principle of traditional energy and power planning models, the idea of energy and power optimization path toward dual carbon goal considering electricity-heat-hydrogen-carbon coupling is proposed. Then, the primary and secondary processing and conversion link models of terminal kerosene gas are established, and the fossil energy conversion link models of terminal heat and hydrogen are established. On this basis, the goal is to optimize the economy. An energy and power optimization planning model considering electricity-heat-hydrogen-carbon coupling is established, and a method is proposed. Finally, taking the path toward carbon peaking carbon neutrality goals of China’s energy power as an example, simulation analysis is carried out to verify the effectiveness of the proposed method.","PeriodicalId":272114,"journal":{"name":"2023 5th Asia Energy and Electrical Engineering Symposium (AEEES)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121558416","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}
Building isolated power grids with high penetration of renewable energy is an effective way to promote the development and utilization of renewable energy. For an isolated power grid, due to the high penetration of renewable energy, the system inertia is low, and frequency instability is prone to occur after the power grid is disturbed. Grid forming control strategy mimics the inertia response characteristics of synchronous machines, it can increase the equivalent inertia of systems and have the ability to actively support the system frequency. However, if renewable energy is always operated under a grid forming mode, it may increase the time for system frequency to unter stable condition. Accordingly, a grid forming and grid following sequence switching control strategy is proposed in this paper, which dynamically switches the two control strategies through different stages of the system frequency response for reducing the maximum frequency deviation and stabilization time of the system. This strategy acts on the system frequency inertia response and primary frequency regulation stage, and adjusts the frequency through control characteristics of the renewable energy grid-connected converters without additional power regulation instructions. The validity of the control strategy proposed in this paper is verified by building a simulation model of an practical isolated power grid in PSCAD/EMTDC.
{"title":"A Grid Forming/Following Sequence Switching Control Strategy for Supporting Frequency Stability of Isolated Power Grids","authors":"Weijie Qiu, Qiang Yang, Tingbang Yang, Xinkun Ma, Xiaobing Xiao, Hujun Shi, Yuanliang Zhao, Shuai Liang","doi":"10.1109/AEEES56888.2023.10114155","DOIUrl":"https://doi.org/10.1109/AEEES56888.2023.10114155","url":null,"abstract":"Building isolated power grids with high penetration of renewable energy is an effective way to promote the development and utilization of renewable energy. For an isolated power grid, due to the high penetration of renewable energy, the system inertia is low, and frequency instability is prone to occur after the power grid is disturbed. Grid forming control strategy mimics the inertia response characteristics of synchronous machines, it can increase the equivalent inertia of systems and have the ability to actively support the system frequency. However, if renewable energy is always operated under a grid forming mode, it may increase the time for system frequency to unter stable condition. Accordingly, a grid forming and grid following sequence switching control strategy is proposed in this paper, which dynamically switches the two control strategies through different stages of the system frequency response for reducing the maximum frequency deviation and stabilization time of the system. This strategy acts on the system frequency inertia response and primary frequency regulation stage, and adjusts the frequency through control characteristics of the renewable energy grid-connected converters without additional power regulation instructions. The validity of the control strategy proposed in this paper is verified by building a simulation model of an practical isolated power grid in PSCAD/EMTDC.","PeriodicalId":272114,"journal":{"name":"2023 5th Asia Energy and Electrical Engineering Symposium (AEEES)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121070780","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 : 2023-03-23DOI: 10.1109/AEEES56888.2023.10114171
Shuyi Zhang, Qiuwei Wu, Jian Chen, Houwang Zhang, Bo Pan
The uncertainty of wind power and demand brings challenges to the secure and economic operation of integrated energy system (IES). In order to effectively deal with the uncertainty, this paper proposes an intra-day multi-time-scale hierarchical rolling scheduling strategy based on model predictive control for IES. First, the mathematical model of the IES is constructed. Then, source-demand uncertainty model is established through fuzzy chance constraints. Finally, according to the response characteristics of heat, gas and electricity, intra-day multi-time-scale hierarchical optimization strategy of integrated energy system is proposed to handle prediction errors layer by layer. The simulation results show that the proposed scheduling model takes into account risks and costs by reasonably selecting confidence level, and smooths fluctuations of different systems by using multi-time-scale.
{"title":"Intra-day Multi-time-scale Hierarchical Rolling Scheduling of Integrated Energy System Considering Uncertainty","authors":"Shuyi Zhang, Qiuwei Wu, Jian Chen, Houwang Zhang, Bo Pan","doi":"10.1109/AEEES56888.2023.10114171","DOIUrl":"https://doi.org/10.1109/AEEES56888.2023.10114171","url":null,"abstract":"The uncertainty of wind power and demand brings challenges to the secure and economic operation of integrated energy system (IES). In order to effectively deal with the uncertainty, this paper proposes an intra-day multi-time-scale hierarchical rolling scheduling strategy based on model predictive control for IES. First, the mathematical model of the IES is constructed. Then, source-demand uncertainty model is established through fuzzy chance constraints. Finally, according to the response characteristics of heat, gas and electricity, intra-day multi-time-scale hierarchical optimization strategy of integrated energy system is proposed to handle prediction errors layer by layer. The simulation results show that the proposed scheduling model takes into account risks and costs by reasonably selecting confidence level, and smooths fluctuations of different systems by using multi-time-scale.","PeriodicalId":272114,"journal":{"name":"2023 5th Asia Energy and Electrical Engineering Symposium (AEEES)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122561437","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 : 2023-03-23DOI: 10.1109/AEEES56888.2023.10114280
D. An, Xiao Hui Liu, Jing-feng Sun
The quasi-static assumption is used when studying the iced conductor galloping problem. The steady-state aerodynamic coefficient obtained from the wind tunnel test is used for the iced conductor galloping analysis. The quasi-static assumption is not fully applicable because the aerodynamic force of the conductor changes with the speed of the conductor. Therefore, it is necessary to conduct a dynamic wind tunnel test to obtain the dynamic aerodynamic coefficient of the iced conductor, analyze its dynamic aerodynamic characteristics, compare the difference between the dynamic aerodynamic force and the static aerodynamic force, and discuss the applicability of the static assumption. In order to verify the applicability of the quasi-static hypothesis (QST), a MATLAB program was written based on the quasi-static theory, and the conversion of static aerodynamic coefficients to dynamic aerodynamic coefficients was realized. The dynamic aerodynamic coefficients obtained in the two cases are compared. The results show that the dynamic aerodynamic coefficients based on the quasi-static theory (QST) are numerically different from the wind tunnel test results, but the curve changes of the two are the same, proving that the quasi-static hypothesis has certain applicability.
{"title":"Study on Dynamic Aerodynamic Coefficients Based on Wind Tunnel Test","authors":"D. An, Xiao Hui Liu, Jing-feng Sun","doi":"10.1109/AEEES56888.2023.10114280","DOIUrl":"https://doi.org/10.1109/AEEES56888.2023.10114280","url":null,"abstract":"The quasi-static assumption is used when studying the iced conductor galloping problem. The steady-state aerodynamic coefficient obtained from the wind tunnel test is used for the iced conductor galloping analysis. The quasi-static assumption is not fully applicable because the aerodynamic force of the conductor changes with the speed of the conductor. Therefore, it is necessary to conduct a dynamic wind tunnel test to obtain the dynamic aerodynamic coefficient of the iced conductor, analyze its dynamic aerodynamic characteristics, compare the difference between the dynamic aerodynamic force and the static aerodynamic force, and discuss the applicability of the static assumption. In order to verify the applicability of the quasi-static hypothesis (QST), a MATLAB program was written based on the quasi-static theory, and the conversion of static aerodynamic coefficients to dynamic aerodynamic coefficients was realized. The dynamic aerodynamic coefficients obtained in the two cases are compared. The results show that the dynamic aerodynamic coefficients based on the quasi-static theory (QST) are numerically different from the wind tunnel test results, but the curve changes of the two are the same, proving that the quasi-static hypothesis has certain applicability.","PeriodicalId":272114,"journal":{"name":"2023 5th Asia Energy and Electrical Engineering Symposium (AEEES)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122864940","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 : 2023-03-23DOI: 10.1109/AEEES56888.2023.10114268
Yichen Luo, Xiao Xu, Pan Li, Junyong Liu, Weihao Hu
The propagation of outage rumors will cause changes in load demand and increase the risk of the power grid operation. Due to the lack of considering the correlation between outage rumor propagation and load demand changes in the existing references, this paper proposes an outage rumor propagation model using the susceptible infected removed (SIR) model. Based on the SIR model, the number of infected individuals and load demand changes after suffering rumors can be obtained. Also, the influence of rumor propagation on the power grid operation is investigated. This paper studies the influence of rumor propagation on load demand by setting high, medium, and low three infection rate and recovery rate scenarios in different individuals. In addition, the optimal results of the power system operation are found based on the reptile search algorithm method in this work. The results can provide important basic information for future operational optimization of the complex power grid.
{"title":"Operational Optimization of a Power Grid Considering Power Outage Rumors","authors":"Yichen Luo, Xiao Xu, Pan Li, Junyong Liu, Weihao Hu","doi":"10.1109/AEEES56888.2023.10114268","DOIUrl":"https://doi.org/10.1109/AEEES56888.2023.10114268","url":null,"abstract":"The propagation of outage rumors will cause changes in load demand and increase the risk of the power grid operation. Due to the lack of considering the correlation between outage rumor propagation and load demand changes in the existing references, this paper proposes an outage rumor propagation model using the susceptible infected removed (SIR) model. Based on the SIR model, the number of infected individuals and load demand changes after suffering rumors can be obtained. Also, the influence of rumor propagation on the power grid operation is investigated. This paper studies the influence of rumor propagation on load demand by setting high, medium, and low three infection rate and recovery rate scenarios in different individuals. In addition, the optimal results of the power system operation are found based on the reptile search algorithm method in this work. The results can provide important basic information for future operational optimization of the complex power grid.","PeriodicalId":272114,"journal":{"name":"2023 5th Asia Energy and Electrical Engineering Symposium (AEEES)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124013674","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}
The current carrying capacity of the equipment can be reduced by heating of disconnector, which can influence safe and stable operation of the power system. The traditional thermal fault analysis of disconnector only takes a simple analysis of contact resistance measurement, deep micro analysis has not been analyzed. Based on macro analysis, this paper systematically studied the causes of heat generation of the disconnector through scientific and technological means such as morphology, metallography, and energy spectrum. Macroscopically, the increase of contact resistance on the disconnector’s surface results in the thermal fault. On the other hand, the surface of the disconnector has corrosion and dimples so that the grain boundary is weakened. And the oxidation resistance is decreased because of many carbides are dispersed. Based on the analysis process, the paper puts forward the cause analysis scheme and preventive measures for the heating fault of 110-220 kV disconnector.
{"title":"Analysis of Thermal Faults for 110-220 kV Disconnector in Substations under New Power System","authors":"Xuqiang Gong, Dapeng Ma, Yizhong Chen, Sijun Li, Weiyan Zhao","doi":"10.1109/AEEES56888.2023.10114216","DOIUrl":"https://doi.org/10.1109/AEEES56888.2023.10114216","url":null,"abstract":"The current carrying capacity of the equipment can be reduced by heating of disconnector, which can influence safe and stable operation of the power system. The traditional thermal fault analysis of disconnector only takes a simple analysis of contact resistance measurement, deep micro analysis has not been analyzed. Based on macro analysis, this paper systematically studied the causes of heat generation of the disconnector through scientific and technological means such as morphology, metallography, and energy spectrum. Macroscopically, the increase of contact resistance on the disconnector’s surface results in the thermal fault. On the other hand, the surface of the disconnector has corrosion and dimples so that the grain boundary is weakened. And the oxidation resistance is decreased because of many carbides are dispersed. Based on the analysis process, the paper puts forward the cause analysis scheme and preventive measures for the heating fault of 110-220 kV disconnector.","PeriodicalId":272114,"journal":{"name":"2023 5th Asia Energy and Electrical Engineering Symposium (AEEES)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126222861","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 : 2023-03-23DOI: 10.1109/AEEES56888.2023.10114071
Li Yong, Zhu Lei, Xu Ziqiang, Xiao Yusong, Ji Xuebiao
Oil-immersed transformer is one of the most important pieces of equipment in the power grid. Ensuring the safe and stable operation of transformer is of great significance to the power system reliability. Dissolved gas analysis is an effective method to detect defects and potential faults of oil-immersed transformers, making accurate prediction for dissolved gases in transformer oilcan give foundation to transformer early warning and predictive maintenance, but the non-stationary and nonlinear variation of dissolved gas concentration limits the accuracy of common prediction methods. Artificial intelligence is an effective means for prediction. In order to improve the accuracy of prediction, this paper proposed a prediction model of dissolved gas in transformer, which combines EMD (empirical mode decomposition) and BiGRU (bidirectional gate recurring unit). EMD is selected to stabilize the concentration series of dissolved gas, and BiRGU is used to predict the sub-sequence components. Finally, the prediction results are obtained by superposition and reconstruction. Compared with traditional models, this method effectively reduces the influence of the nonstationarity of the original data, and obviously improves the prediction accuracy, which is helpful to prolong the service life of equipment and improve the reliability of power grid.
{"title":"Prediction Model of Dissolved Gas in Transformer Oil Based on EMD and BiGRU","authors":"Li Yong, Zhu Lei, Xu Ziqiang, Xiao Yusong, Ji Xuebiao","doi":"10.1109/AEEES56888.2023.10114071","DOIUrl":"https://doi.org/10.1109/AEEES56888.2023.10114071","url":null,"abstract":"Oil-immersed transformer is one of the most important pieces of equipment in the power grid. Ensuring the safe and stable operation of transformer is of great significance to the power system reliability. Dissolved gas analysis is an effective method to detect defects and potential faults of oil-immersed transformers, making accurate prediction for dissolved gases in transformer oilcan give foundation to transformer early warning and predictive maintenance, but the non-stationary and nonlinear variation of dissolved gas concentration limits the accuracy of common prediction methods. Artificial intelligence is an effective means for prediction. In order to improve the accuracy of prediction, this paper proposed a prediction model of dissolved gas in transformer, which combines EMD (empirical mode decomposition) and BiGRU (bidirectional gate recurring unit). EMD is selected to stabilize the concentration series of dissolved gas, and BiRGU is used to predict the sub-sequence components. Finally, the prediction results are obtained by superposition and reconstruction. Compared with traditional models, this method effectively reduces the influence of the nonstationarity of the original data, and obviously improves the prediction accuracy, which is helpful to prolong the service life of equipment and improve the reliability of power grid.","PeriodicalId":272114,"journal":{"name":"2023 5th Asia Energy and Electrical Engineering Symposium (AEEES)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126396183","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 : 2023-03-23DOI: 10.1109/AEEES56888.2023.10114224
Jian Gao, Xiang Gu, Hong Wang, Ganghong Zhang
This paper designs and proposes a secure operation and maintenance system based on Z password algorithm for the security requirements of electric Internet of Things, identity authentication and session key negotiation of handheld operation and maintenance terminal devices in wireless environment. The design idea of deep fusion of user key and algorithm is different from the traditional block cipher design which emphasizes the standardization of algorithm and secret key. The variable password logic of fusion of key and algorithm ensures the different logical structure of password algorithm among different users. Different logic not only refers to different password parameters used, but also different hierarchical structures, different operations, different components, and different data flows, so as to ensure that all users adopt different password algorithms, which can be called "one person one secret + one time one secret", which greatly improves the security of the system. The design considers the safety requirements such as instance safety, system safety and distance safety, and realizes the safety operation and maintenance and software realization in the aspect of power intelligent terminal, so as to facilitate the management and update.
{"title":"Research on Power Distribution Operation and Maintenance Security Technology Based on Z Algorithm","authors":"Jian Gao, Xiang Gu, Hong Wang, Ganghong Zhang","doi":"10.1109/AEEES56888.2023.10114224","DOIUrl":"https://doi.org/10.1109/AEEES56888.2023.10114224","url":null,"abstract":"This paper designs and proposes a secure operation and maintenance system based on Z password algorithm for the security requirements of electric Internet of Things, identity authentication and session key negotiation of handheld operation and maintenance terminal devices in wireless environment. The design idea of deep fusion of user key and algorithm is different from the traditional block cipher design which emphasizes the standardization of algorithm and secret key. The variable password logic of fusion of key and algorithm ensures the different logical structure of password algorithm among different users. Different logic not only refers to different password parameters used, but also different hierarchical structures, different operations, different components, and different data flows, so as to ensure that all users adopt different password algorithms, which can be called \"one person one secret + one time one secret\", which greatly improves the security of the system. The design considers the safety requirements such as instance safety, system safety and distance safety, and realizes the safety operation and maintenance and software realization in the aspect of power intelligent terminal, so as to facilitate the management and update.","PeriodicalId":272114,"journal":{"name":"2023 5th Asia Energy and Electrical Engineering Symposium (AEEES)","volume":"261 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129811529","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 : 2023-03-23DOI: 10.1109/AEEES56888.2023.10114145
Yanzhang Liu, Ning Chen, Ling-zhi Zhu, Lei Zhang
With the increasing proportion of power electronic equipment, the inertia of power system continues to decrease, and the stability of synchronous power grid based on rotor operation equation has changed greatly. For the systems with renewable energy connected to weakly-synchronized sending-end DC power grid, due to overvoltage, oscillation and other problems, the operation risks of power grid are increased. At present, the existing monitoring methods are not able to obtain the in-depth information of grid connection adaptability and support capacity. A new grid adaptability evaluation method considering the SCADA data is proposed. According to the application scenarios, a multi-level architecture is designed, which carries out evaluation index calculation at the station-level for high real-time requirements, and transfers the results to superior-level for comprehensive analysis. The method can be popularized and applied to the grid operation monitoring of renewable energy, which may plays an important role in improving the stability of weakly-synchronized sending-end DC power grid.
{"title":"Development of a Grid Adaptability Evaluation Method for Systems with Renewable Energy Connected to Weakly-Synchronized Sending-End DC Power Grid","authors":"Yanzhang Liu, Ning Chen, Ling-zhi Zhu, Lei Zhang","doi":"10.1109/AEEES56888.2023.10114145","DOIUrl":"https://doi.org/10.1109/AEEES56888.2023.10114145","url":null,"abstract":"With the increasing proportion of power electronic equipment, the inertia of power system continues to decrease, and the stability of synchronous power grid based on rotor operation equation has changed greatly. For the systems with renewable energy connected to weakly-synchronized sending-end DC power grid, due to overvoltage, oscillation and other problems, the operation risks of power grid are increased. At present, the existing monitoring methods are not able to obtain the in-depth information of grid connection adaptability and support capacity. A new grid adaptability evaluation method considering the SCADA data is proposed. According to the application scenarios, a multi-level architecture is designed, which carries out evaluation index calculation at the station-level for high real-time requirements, and transfers the results to superior-level for comprehensive analysis. The method can be popularized and applied to the grid operation monitoring of renewable energy, which may plays an important role in improving the stability of weakly-synchronized sending-end DC power grid.","PeriodicalId":272114,"journal":{"name":"2023 5th Asia Energy and Electrical Engineering Symposium (AEEES)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129426430","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 continuous development of new-type power systems, all kinds of innovative technologies have come into being. However, due to the scattered development of various technologies and the lack of co-ordinated planning, it makes some of the innovative technologies ignore the optimisation of investment in order to achieve the expected construction goals. Therefore, in order to guide grid enterprises and promote technology application and planning, the construction conditions of innovative technologies for new power systems are analysed and a three-dimensional spatial three-dimensional evaluation system is established, taking into account the spatial and temporal resources required for technology construction. The continuous interval ordered weighted average operator is used to improve the subjective and objective comprehensive assignment method, reducing the subjectivity of the evaluation and improving the compatibility of the evaluation system. Finally, the fuzzy comprehensive evaluation method is used to determine the affiliation degree of each index, and then the evaluation level of the new energy network innovation technology is obtained. The results show that the proposed method can identify the adaptability of innovative technologies to different time and space and the suitability of different time and space for a certain technology application in both directions.
{"title":"A Multidimensional Adaptive Assessment Model for Innovative Technologies in New-Type Power System","authors":"Wei Fan, Dongming Liu, Zhe Yang, Yu Liu, Cheng Yang, Qingbin Zeng","doi":"10.1109/AEEES56888.2023.10114295","DOIUrl":"https://doi.org/10.1109/AEEES56888.2023.10114295","url":null,"abstract":"With the continuous development of new-type power systems, all kinds of innovative technologies have come into being. However, due to the scattered development of various technologies and the lack of co-ordinated planning, it makes some of the innovative technologies ignore the optimisation of investment in order to achieve the expected construction goals. Therefore, in order to guide grid enterprises and promote technology application and planning, the construction conditions of innovative technologies for new power systems are analysed and a three-dimensional spatial three-dimensional evaluation system is established, taking into account the spatial and temporal resources required for technology construction. The continuous interval ordered weighted average operator is used to improve the subjective and objective comprehensive assignment method, reducing the subjectivity of the evaluation and improving the compatibility of the evaluation system. Finally, the fuzzy comprehensive evaluation method is used to determine the affiliation degree of each index, and then the evaluation level of the new energy network innovation technology is obtained. The results show that the proposed method can identify the adaptability of innovative technologies to different time and space and the suitability of different time and space for a certain technology application in both directions.","PeriodicalId":272114,"journal":{"name":"2023 5th Asia Energy and Electrical Engineering Symposium (AEEES)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129561127","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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