Pub Date : 2006-10-01DOI: 10.1109/ICPST.2006.321888
Li Cheng, Liao Xiangyang, Sun Gai-ping, Wei Tao
One-cycle control is a nonlinear modulation and control technique presented in 1991. It has been widely used in various kinds of inverters and active power filters because it possesses the distinguishing feature of higher control precision, better dynamic follow performance and simpler control circuit. In this paper, one cycle control technique is applied to the control process of DVC. A new control scheme for DVC by using one- cycle control is proposed. First, based on the analysis of power circuit, the control principle is in detail introduced. And then, the corresponding one-cycle control model for the proposed DVC is built up. Finally, the control model for single-phase DVC is simulated using Matlab based on theoretical analysis and given the control model. Both theory analysis and simulation results show that the new control scheme for DVC are correct and effectual.
{"title":"Study on Dynamic Voltage Conditioner with One-Cycle Control","authors":"Li Cheng, Liao Xiangyang, Sun Gai-ping, Wei Tao","doi":"10.1109/ICPST.2006.321888","DOIUrl":"https://doi.org/10.1109/ICPST.2006.321888","url":null,"abstract":"One-cycle control is a nonlinear modulation and control technique presented in 1991. It has been widely used in various kinds of inverters and active power filters because it possesses the distinguishing feature of higher control precision, better dynamic follow performance and simpler control circuit. In this paper, one cycle control technique is applied to the control process of DVC. A new control scheme for DVC by using one- cycle control is proposed. First, based on the analysis of power circuit, the control principle is in detail introduced. And then, the corresponding one-cycle control model for the proposed DVC is built up. Finally, the control model for single-phase DVC is simulated using Matlab based on theoretical analysis and given the control model. Both theory analysis and simulation results show that the new control scheme for DVC are correct and effectual.","PeriodicalId":181574,"journal":{"name":"2006 International Conference on Power System Technology","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127486931","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 : 2006-10-01DOI: 10.1109/ICPST.2006.321449
G. Tan, Jianze Wang, Rutian Wang, Yanchao Ji
A new three-switch buck-boost inverter suitable for distributed generation (DG) applications is presented. The operation principle is analyzed in detail and the mathematics model is founded based on input-output power balance principle. SPWM control method is employed to optimize the inverter performance. Compared to the conventional double-stage inverter, the proposed converter is structurally simple with only three power switches and can accommodate an AC voltage either larger or lower than the DC voltage in a single power stage. The new inverter circuit topology provides the main switches for turn-on at zero current switching (ZCS) to achieve a low switching loss by a series-resonant tank. Furthermore, an enhanced version of the inverter is also proposed to reduce the ripple voltage on the DC bus. Simulation and experimental results are given to verify the validity and effectiveness of the proposed inverter.
{"title":"A New SPWM Controlled Three-Switch Buck-Boost Inverter for Distributed Generation Applications","authors":"G. Tan, Jianze Wang, Rutian Wang, Yanchao Ji","doi":"10.1109/ICPST.2006.321449","DOIUrl":"https://doi.org/10.1109/ICPST.2006.321449","url":null,"abstract":"A new three-switch buck-boost inverter suitable for distributed generation (DG) applications is presented. The operation principle is analyzed in detail and the mathematics model is founded based on input-output power balance principle. SPWM control method is employed to optimize the inverter performance. Compared to the conventional double-stage inverter, the proposed converter is structurally simple with only three power switches and can accommodate an AC voltage either larger or lower than the DC voltage in a single power stage. The new inverter circuit topology provides the main switches for turn-on at zero current switching (ZCS) to achieve a low switching loss by a series-resonant tank. Furthermore, an enhanced version of the inverter is also proposed to reduce the ripple voltage on the DC bus. Simulation and experimental results are given to verify the validity and effectiveness of the proposed inverter.","PeriodicalId":181574,"journal":{"name":"2006 International Conference on Power System Technology","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130163036","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 : 2006-10-01DOI: 10.1109/ICPST.2006.321406
Huaizhi Liu, Yang Bai, Ming Liang, Huibin Chen, Xuwei Ren
The failure caused by the cable joint seriously threatens the safe running of distribution power grids. In this article, we have proposed a supervising system using wireless communication technique in order to realize a real-time monitoring and pre-warning of cable joint in distribution power grids. In this paper, we mainly introduce the framework of the system, principles as well as the software designing.
{"title":"Research of State Monitoring and Pre-warning System of Cable Joint in Distribution power grids","authors":"Huaizhi Liu, Yang Bai, Ming Liang, Huibin Chen, Xuwei Ren","doi":"10.1109/ICPST.2006.321406","DOIUrl":"https://doi.org/10.1109/ICPST.2006.321406","url":null,"abstract":"The failure caused by the cable joint seriously threatens the safe running of distribution power grids. In this article, we have proposed a supervising system using wireless communication technique in order to realize a real-time monitoring and pre-warning of cable joint in distribution power grids. In this paper, we mainly introduce the framework of the system, principles as well as the software designing.","PeriodicalId":181574,"journal":{"name":"2006 International Conference on Power System Technology","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128960178","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 : 2006-10-01DOI: 10.1109/ICPST.2006.321905
Yan Li, C. Mao, Bu-han Zhang, Jie Zeng
Voltage sags have become one of the major power quality concerns in recent years. To decide the suitability of mitigation methods, knowledge is needed about the expected number of sags as a function of special characteristics; this knowledge can be obtained through voltage sag analysis software, which is developed in the paper based on the method of fault position. The software has many functions; a detailed voltage sag study for a practical industrial distribution network by using it has been done in this paper. In order to assess the degree of fault position influence on voltage sags of the power system, an index named fault position sag coefficient (FPSC) is defined in the paper. This coefficient can be calculated out based on the results of voltage sag analysis software. The dangerous fault positions which cause serious voltage sags can be determined.
{"title":"Voltage Sag Study for a Practical Industrial Distribution Network","authors":"Yan Li, C. Mao, Bu-han Zhang, Jie Zeng","doi":"10.1109/ICPST.2006.321905","DOIUrl":"https://doi.org/10.1109/ICPST.2006.321905","url":null,"abstract":"Voltage sags have become one of the major power quality concerns in recent years. To decide the suitability of mitigation methods, knowledge is needed about the expected number of sags as a function of special characteristics; this knowledge can be obtained through voltage sag analysis software, which is developed in the paper based on the method of fault position. The software has many functions; a detailed voltage sag study for a practical industrial distribution network by using it has been done in this paper. In order to assess the degree of fault position influence on voltage sags of the power system, an index named fault position sag coefficient (FPSC) is defined in the paper. This coefficient can be calculated out based on the results of voltage sag analysis software. The dangerous fault positions which cause serious voltage sags can be determined.","PeriodicalId":181574,"journal":{"name":"2006 International Conference on Power System Technology","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130573000","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 : 2006-10-01DOI: 10.1109/ICPST.2006.321935
E. Hreinsson
Supply adequacy represents the systems ability to meet demand on an extended time scale in view of the inherent fluctuation and uncertainty in demand and supply, the non- storability of power and the lead time inherent in capacity additions. With auction based short term spot markets, spot prices should theoretically provide the correct economic signals for ensuring supply adequacy and the optimal expansion of generation. Increasing demand and therefore increasing imbalance between supply and demand should result in spot- prices increases. This in turn should create incentives for investors to construct new plants. Furthermore, the spot market revenues should be able to cover investment and operations costs optimally. Unfortunately it has been quite problematic in many cases to implement the above paradigm in practice. While it may be conceptually correct as a part of applying economic theory to electricity pricing, its actual implementation has been difficult. Problems, in particular, have appeared and may appear in power systems with significant share of hydro-power resources and in small-scale power systems. The mitigation of such problems is discussed and the possible associated methodology. For instance, it is well known that electricity spot prices in hydro-based power systems are highly volatile. Therefore they do not give clear and simple economic signals for new generation. Spot price volatility depends heavily on hydrological conditions. Hydropower systems generally have a range of different sizes of reservoirs and highly variable natural inflow. The reservoir sizes may range from large multi- year storage capacity reservoirs to small intra-day storage ponds. With ample inflow of water under "wet" hydro conditions and with almost full reservoirs, spot prices may be very low or almost zero for extended periods, even several years. On the other hand, with low inflow and low reservoir contents these prices may then increase sharply even for a few months reflecting dry hydro conditions. This volatility is superimposed on the daily and seasonal load fluctuations and gradually increasing demand which should ideally provide the price incentive for capacity expansion. In other words, the hydrological "noise" disturbs the correct and meaningful price signals. Several methods have been proposed and are in use in liberalized hydro-based electricity markets to ensure supply adequacy. Explicit capacity remuneration methods or capacity requirements (obligations) imposed by a regulating authority represent additional mechanisms in liberalized hydro-based electricity markets to ensure supply adequacy. In some countries, these methods are coupled with the use of auctions, thus forming the backbone to induce the supply adequacy and long-run efficiency for end-users. In addition, small-scale power systems must rely also on special arrangements to avoid a strong interference on the market of new capacity additions. In many cases, it is still difficult to r
{"title":"Supply Adequacy Issues in Renewable Energy and Hydro-Based Power Systems","authors":"E. Hreinsson","doi":"10.1109/ICPST.2006.321935","DOIUrl":"https://doi.org/10.1109/ICPST.2006.321935","url":null,"abstract":"Supply adequacy represents the systems ability to meet demand on an extended time scale in view of the inherent fluctuation and uncertainty in demand and supply, the non- storability of power and the lead time inherent in capacity additions. With auction based short term spot markets, spot prices should theoretically provide the correct economic signals for ensuring supply adequacy and the optimal expansion of generation. Increasing demand and therefore increasing imbalance between supply and demand should result in spot- prices increases. This in turn should create incentives for investors to construct new plants. Furthermore, the spot market revenues should be able to cover investment and operations costs optimally. Unfortunately it has been quite problematic in many cases to implement the above paradigm in practice. While it may be conceptually correct as a part of applying economic theory to electricity pricing, its actual implementation has been difficult. Problems, in particular, have appeared and may appear in power systems with significant share of hydro-power resources and in small-scale power systems. The mitigation of such problems is discussed and the possible associated methodology. For instance, it is well known that electricity spot prices in hydro-based power systems are highly volatile. Therefore they do not give clear and simple economic signals for new generation. Spot price volatility depends heavily on hydrological conditions. Hydropower systems generally have a range of different sizes of reservoirs and highly variable natural inflow. The reservoir sizes may range from large multi- year storage capacity reservoirs to small intra-day storage ponds. With ample inflow of water under \"wet\" hydro conditions and with almost full reservoirs, spot prices may be very low or almost zero for extended periods, even several years. On the other hand, with low inflow and low reservoir contents these prices may then increase sharply even for a few months reflecting dry hydro conditions. This volatility is superimposed on the daily and seasonal load fluctuations and gradually increasing demand which should ideally provide the price incentive for capacity expansion. In other words, the hydrological \"noise\" disturbs the correct and meaningful price signals. Several methods have been proposed and are in use in liberalized hydro-based electricity markets to ensure supply adequacy. Explicit capacity remuneration methods or capacity requirements (obligations) imposed by a regulating authority represent additional mechanisms in liberalized hydro-based electricity markets to ensure supply adequacy. In some countries, these methods are coupled with the use of auctions, thus forming the backbone to induce the supply adequacy and long-run efficiency for end-users. In addition, small-scale power systems must rely also on special arrangements to avoid a strong interference on the market of new capacity additions. In many cases, it is still difficult to r","PeriodicalId":181574,"journal":{"name":"2006 International Conference on Power System Technology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130729370","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 : 2006-10-01DOI: 10.1109/ICPST.2006.321686
A. Gubina, Xu Xiangyang, Sun Zhengmin
Reduction of greenhouse gas emission levels in China is of great importance, because of their significant growth. Development of renewable energy sources is a key to the sustainable development of China while pursuing the low GHG emissions goals. In the paper, we present an overview of the development in the renewable energy sources (RES) in the Western Region of China (WRC). We analyze the abundant renewable energy resources in WRC with different energy specifications. We focus on China's WRC as the most important region for development of renewable energy in the future years. Due to its diversity in RES sources and different RES support initiatives, Western Region could serve as a testing ground for wider application of a uniform RES support policy in China. We analyze two cases of Chinese experience with RES support policy based on Tibet and Sichuan provinces located in West Region of China. We identify various barriers and success factors to promote RES development in WRC. We also review the current policy mechanisms, especially investment- or generation- based price-driven and capacity-driven mechanisms, ranging from investment incentives for the development of renewable energy projects, feed-in tariffs, production tax incentives, tendering systems, and quota obligations based on tradable green certificates. Based on European Union experience, we propose policy measures to stimulate RES development in WRC and present some instruments for its implementation.
{"title":"Analysis and Support Policy Recommendation of Renewable Energy Sources in Western China","authors":"A. Gubina, Xu Xiangyang, Sun Zhengmin","doi":"10.1109/ICPST.2006.321686","DOIUrl":"https://doi.org/10.1109/ICPST.2006.321686","url":null,"abstract":"Reduction of greenhouse gas emission levels in China is of great importance, because of their significant growth. Development of renewable energy sources is a key to the sustainable development of China while pursuing the low GHG emissions goals. In the paper, we present an overview of the development in the renewable energy sources (RES) in the Western Region of China (WRC). We analyze the abundant renewable energy resources in WRC with different energy specifications. We focus on China's WRC as the most important region for development of renewable energy in the future years. Due to its diversity in RES sources and different RES support initiatives, Western Region could serve as a testing ground for wider application of a uniform RES support policy in China. We analyze two cases of Chinese experience with RES support policy based on Tibet and Sichuan provinces located in West Region of China. We identify various barriers and success factors to promote RES development in WRC. We also review the current policy mechanisms, especially investment- or generation- based price-driven and capacity-driven mechanisms, ranging from investment incentives for the development of renewable energy projects, feed-in tariffs, production tax incentives, tendering systems, and quota obligations based on tradable green certificates. Based on European Union experience, we propose policy measures to stimulate RES development in WRC and present some instruments for its implementation.","PeriodicalId":181574,"journal":{"name":"2006 International Conference on Power System Technology","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132483386","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 : 2006-10-01DOI: 10.1109/ICPST.2006.321927
M. Ramold, G. Idarraga, J. Jager
This paper presents an analysis of a 500 kV bulk power transmission system and the dimensioning of proper shunt reactors to be applied under steady state and transient aspects in particular. Therefore, the behavior of single-pole auto-reclosing under line-to-ground fault conditions is analyzed. Hence is described the necessity and influence of factors such as phase and neutral reactors, capacitive and inductive couplings on the extinction of secondary arc. Those are investigated in order to justify the feasibility of single-pole auto-reclosing. A practical example of the system is developed with respect to an investigation of the impact of neutral reactors. The considerations have been firstly done analytically and verified subsequently based on transient simulations using ATP/EMTP.
{"title":"Transient shunt reactor dimensioning for bulk power transmission systems during normal and faulty network conditions","authors":"M. Ramold, G. Idarraga, J. Jager","doi":"10.1109/ICPST.2006.321927","DOIUrl":"https://doi.org/10.1109/ICPST.2006.321927","url":null,"abstract":"This paper presents an analysis of a 500 kV bulk power transmission system and the dimensioning of proper shunt reactors to be applied under steady state and transient aspects in particular. Therefore, the behavior of single-pole auto-reclosing under line-to-ground fault conditions is analyzed. Hence is described the necessity and influence of factors such as phase and neutral reactors, capacitive and inductive couplings on the extinction of secondary arc. Those are investigated in order to justify the feasibility of single-pole auto-reclosing. A practical example of the system is developed with respect to an investigation of the impact of neutral reactors. The considerations have been firstly done analytically and verified subsequently based on transient simulations using ATP/EMTP.","PeriodicalId":181574,"journal":{"name":"2006 International Conference on Power System Technology","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131013061","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 : 2006-10-01DOI: 10.1109/ICPST.2006.321733
Hu Haifeng, Zhao Jinhu, Cao Yang, Han Tao, Song Xin, Lin Yaping
The background and existing problems about data exchanging among multi-systems in the control center are introduced. The best way of data exchanging among systems are setting up a common information data platform system (CIDPS) CIDPS, which is located in the II and III sections, ensures the data to be shared by the multi-subsystems in the control center. Two methods of realizing CIDPS are DATA-PROXY and DATA-ENTITY. After discussing, the conclusion is come to that the DATA-ENTITY CIDPS method is preferred for the dispatching automation systems. Standard IEC 61970 is the theoretical base of CIDPS and it is the interactive technology standard among CIDPS and other system. A distributed object technology is the technology guarantee of CIDPS. The power model of CIDPS is built according to CIM Standard. CIDPS offers CIS interfaces for other systems accessing data. The sub-system can get the various power system models, parameters or real-time data by GDA or HSDA interfaces, and for a graphics centric method, SVG (scalable vector graphics) is a good candidate for the exchange format. Lastly, an application of CIDPS named OPEN3000 is presented particularly.
{"title":"The Study of Data Exchange Technology Among Control Center Systems","authors":"Hu Haifeng, Zhao Jinhu, Cao Yang, Han Tao, Song Xin, Lin Yaping","doi":"10.1109/ICPST.2006.321733","DOIUrl":"https://doi.org/10.1109/ICPST.2006.321733","url":null,"abstract":"The background and existing problems about data exchanging among multi-systems in the control center are introduced. The best way of data exchanging among systems are setting up a common information data platform system (CIDPS) CIDPS, which is located in the II and III sections, ensures the data to be shared by the multi-subsystems in the control center. Two methods of realizing CIDPS are DATA-PROXY and DATA-ENTITY. After discussing, the conclusion is come to that the DATA-ENTITY CIDPS method is preferred for the dispatching automation systems. Standard IEC 61970 is the theoretical base of CIDPS and it is the interactive technology standard among CIDPS and other system. A distributed object technology is the technology guarantee of CIDPS. The power model of CIDPS is built according to CIM Standard. CIDPS offers CIS interfaces for other systems accessing data. The sub-system can get the various power system models, parameters or real-time data by GDA or HSDA interfaces, and for a graphics centric method, SVG (scalable vector graphics) is a good candidate for the exchange format. Lastly, an application of CIDPS named OPEN3000 is presented particularly.","PeriodicalId":181574,"journal":{"name":"2006 International Conference on Power System Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130286652","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 : 2006-10-01DOI: 10.1109/ICPST.2006.321912
Hu Zhao-guang, Tan Xian-dong
It is significant to establish national electric power supply and demand simulation system. This paper aims at studying the architecture of the simulation system from three respects: software structure, database platform and system functional module. Firstly, in the case of software structure, the simulation system is designed to be based on the mixed pattern of B/S (browser/server) and C/S (client/server), and its structure is a multilayer distributed structure, including presentation layer, Web service layer, application service layer and data service layer; secondly, the database platform of the simulation system is classified into business database, achievement database and multimedia database; thirdly, concerning system functional module, the system consists of five modules: current situation analysis of power supply and demand, forecast of power supply and demand, early warning the imbalance of power supply and demand, important relationship of power supply and demand, and policy simulation.
{"title":"Study on the Architecture of National Electric Power Supply and Demand Simulation System","authors":"Hu Zhao-guang, Tan Xian-dong","doi":"10.1109/ICPST.2006.321912","DOIUrl":"https://doi.org/10.1109/ICPST.2006.321912","url":null,"abstract":"It is significant to establish national electric power supply and demand simulation system. This paper aims at studying the architecture of the simulation system from three respects: software structure, database platform and system functional module. Firstly, in the case of software structure, the simulation system is designed to be based on the mixed pattern of B/S (browser/server) and C/S (client/server), and its structure is a multilayer distributed structure, including presentation layer, Web service layer, application service layer and data service layer; secondly, the database platform of the simulation system is classified into business database, achievement database and multimedia database; thirdly, concerning system functional module, the system consists of five modules: current situation analysis of power supply and demand, forecast of power supply and demand, early warning the imbalance of power supply and demand, important relationship of power supply and demand, and policy simulation.","PeriodicalId":181574,"journal":{"name":"2006 International Conference on Power System Technology","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128767007","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 : 2006-10-01DOI: 10.1109/ICPST.2006.321747
Zhu Yi-ying
This paper analyzes the different operation modes of the UHVDC system sharing earth electrode from the aspect of power system stable operation. Two UHVDC system rectifiers and inverters sharing earth electrode were studied respectively by electromagnetic transient analysis software EMTP-RV based on the main parameters of Xiang jiaba to Nan hui plusmn800 kV UHVDC transmission system. The influence on the normal operation of UHVDC system sharing earth electrode is simulated and analyzed. The merits and demerits of sharing earth electrode are summarized in detail. The feasible suggestions for the corresponding control and protection of UHVDC system sharing earth electrode are put forward.
{"title":"Study on Sharing Earth Electrode of UHVDC","authors":"Zhu Yi-ying","doi":"10.1109/ICPST.2006.321747","DOIUrl":"https://doi.org/10.1109/ICPST.2006.321747","url":null,"abstract":"This paper analyzes the different operation modes of the UHVDC system sharing earth electrode from the aspect of power system stable operation. Two UHVDC system rectifiers and inverters sharing earth electrode were studied respectively by electromagnetic transient analysis software EMTP-RV based on the main parameters of Xiang jiaba to Nan hui plusmn800 kV UHVDC transmission system. The influence on the normal operation of UHVDC system sharing earth electrode is simulated and analyzed. The merits and demerits of sharing earth electrode are summarized in detail. The feasible suggestions for the corresponding control and protection of UHVDC system sharing earth electrode are put forward.","PeriodicalId":181574,"journal":{"name":"2006 International Conference on Power System Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128827570","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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