Pub Date : 2005-11-21DOI: 10.1109/CIGRE.2005.1532740
V. Nechataev, G. Krost, J. Vanzetta, M. Rogge
A tool was developed supporting transmission system operators (TSO) fast and in non-discriminatory manner in redistributing active power generation in cases of sudden and unexpected overload of lines or transformers. Despite of scrutinized generation schedules such situations might happen in cases of system failure or large uncertain (e.g., wind) power production. The system is based on SCADA information and delivers concrete and well measured suggestions to the operator, indicating the generation of which generators should be adjusted in order to remove the occurred overload, see principle sketch fig. 1, and is able to optionally account for generation displacement cost, too. It was developed in close cooperation of a university and a TSO in Germany and successfully verified on the basis of real bulk power system data
{"title":"Analysis system for real time management of congestions in bulk transmission systems","authors":"V. Nechataev, G. Krost, J. Vanzetta, M. Rogge","doi":"10.1109/CIGRE.2005.1532740","DOIUrl":"https://doi.org/10.1109/CIGRE.2005.1532740","url":null,"abstract":"A tool was developed supporting transmission system operators (TSO) fast and in non-discriminatory manner in redistributing active power generation in cases of sudden and unexpected overload of lines or transformers. Despite of scrutinized generation schedules such situations might happen in cases of system failure or large uncertain (e.g., wind) power production. The system is based on SCADA information and delivers concrete and well measured suggestions to the operator, indicating the generation of which generators should be adjusted in order to remove the occurred overload, see principle sketch fig. 1, and is able to optionally account for generation displacement cost, too. It was developed in close cooperation of a university and a TSO in Germany and successfully verified on the basis of real bulk power system data","PeriodicalId":414346,"journal":{"name":"International Symposium CIGRE/IEEE PES, 2005.","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122450946","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 : 2005-11-21DOI: 10.1109/CIGRE.2005.1532759
W. Mielczarski, G. Anders
Introduction of the electricity markets has brought into attention the need to prepare the day ahead generation schedules required for the dispatch of the electric power system. The schedules have to ensure secure operation of the power system taking into account the capacity of the transmission lines and the possibility of congestion that may appear when the schedules are implemented. The preparation of the schedules requires information on the network operating conditions including network constraints. Such conditions and constraints are verified using various software packages for power flow simulation. However, the information obtained from such simulation is difficult to implement directly into optimization software for commitment and dispatch of generating units and loads. There is a need for the determination of a simple way of communication between network operators and market participants in order to remove the network congestion in the prepared schedules. One of the most effective ways is to transfer the network conditions into nodal constraints. Several categories of the nodal constraints, if adequately defined, can be applied to remove network congestion by the generating unit schedules. The paper presents a method of congestion management during the process of unit commitment and dispatch using a binary linear approach taking into account the nodal constraints. The following topics are discussed in the paper: nodal constraints as a way of communication of network operating conditions; use of the nodal constraints in commitment & dispatch of generating units as the tool for the congestion management; the binary linear programming commitment & dispatch method for the determination of schedules of generating units. The paper presents a practical experience with managing congestion in the Polish balancing market that has been operating successfully since 2001
{"title":"Congestion management by commitment & dispatch in the balancing market","authors":"W. Mielczarski, G. Anders","doi":"10.1109/CIGRE.2005.1532759","DOIUrl":"https://doi.org/10.1109/CIGRE.2005.1532759","url":null,"abstract":"Introduction of the electricity markets has brought into attention the need to prepare the day ahead generation schedules required for the dispatch of the electric power system. The schedules have to ensure secure operation of the power system taking into account the capacity of the transmission lines and the possibility of congestion that may appear when the schedules are implemented. The preparation of the schedules requires information on the network operating conditions including network constraints. Such conditions and constraints are verified using various software packages for power flow simulation. However, the information obtained from such simulation is difficult to implement directly into optimization software for commitment and dispatch of generating units and loads. There is a need for the determination of a simple way of communication between network operators and market participants in order to remove the network congestion in the prepared schedules. One of the most effective ways is to transfer the network conditions into nodal constraints. Several categories of the nodal constraints, if adequately defined, can be applied to remove network congestion by the generating unit schedules. The paper presents a method of congestion management during the process of unit commitment and dispatch using a binary linear approach taking into account the nodal constraints. The following topics are discussed in the paper: nodal constraints as a way of communication of network operating conditions; use of the nodal constraints in commitment & dispatch of generating units as the tool for the congestion management; the binary linear programming commitment & dispatch method for the determination of schedules of generating units. The paper presents a practical experience with managing congestion in the Polish balancing market that has been operating successfully since 2001","PeriodicalId":414346,"journal":{"name":"International Symposium CIGRE/IEEE PES, 2005.","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123945621","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 : 2005-11-21DOI: 10.1109/CIGRE.2005.1532749
S. Dragojlovic, O. Milenkovic
Information is most important thing now in 21st century. The many power utility company do not use information system for technical problems. This company work as before ten or fifty years. Only way for progress is insert information system into power utility system information system go into power utility company first as billing system. Next step is accounting, information system for accounting is very important for working any system. The financial sector of power system contains alls billing system, accounting and customer information service. The first segment of technical sector of power system where we implemented information system is SCADA. Next step is implementation of information system into network asset management and on end is GIS. We explain in this paper how are includes programs of many difference producer and connect into unique information system
{"title":"Integration of SCADA in the information system","authors":"S. Dragojlovic, O. Milenkovic","doi":"10.1109/CIGRE.2005.1532749","DOIUrl":"https://doi.org/10.1109/CIGRE.2005.1532749","url":null,"abstract":"Information is most important thing now in 21st century. The many power utility company do not use information system for technical problems. This company work as before ten or fifty years. Only way for progress is insert information system into power utility system information system go into power utility company first as billing system. Next step is accounting, information system for accounting is very important for working any system. The financial sector of power system contains alls billing system, accounting and customer information service. The first segment of technical sector of power system where we implemented information system is SCADA. Next step is implementation of information system into network asset management and on end is GIS. We explain in this paper how are includes programs of many difference producer and connect into unique information system","PeriodicalId":414346,"journal":{"name":"International Symposium CIGRE/IEEE PES, 2005.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124142475","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 : 2005-11-21DOI: 10.1109/CIGRE.2005.1532762
A. Grobovoy, Y. Grishin, I. Kolosok
Progress in the UCTE-IPS/UPS electricity transmission system study causes the posing a question concerned the principles that could be used for coordination of so-called system protection schemes (SPS) for the impending interconnection. Multitude of ways to coordinate SPS is known but it is difficult to select some of them in the UCTE-IPS/UPS case. There is quantity of well known strategies for on-line dynamic security assessment (DSA) as well as large amount of approaches to SPS development in the power systems. At the same time, different practice of the use of SPS in the UCTE power system and the IPS/UPS can become an impediment to progress in unanimous strategy of SPS coordination. Peculiarities of deregulation in power systems produce supplementary obstacles. It is better to debate this topic before developing SPS coordinating structure for the UCTE-IPS/UPS. Two possible strategies for coordination of SPS in the UCTE-IPS/UPS interconnection are suggested. The structures of two modern Russian SPS complexes are proposed for consideration as probable prototypes for SPS complexes in the UCTE-IPS/UPS project. One of the approaches to power system state estimation that has to be fulfilled by SPS complexes and systems is briefly discussed. The suggestion that the general principles of DSA and the UCTE-IPS/UPS emergency control have to be tested at the European and Russian control centers is formulated. As possible places for such tests in Russia the Zeya and Bureya HPP's SPS complexes are shown
{"title":"Practicability of SPS coordination in market environment for impending UCTE-IPS/UPS interconnection","authors":"A. Grobovoy, Y. Grishin, I. Kolosok","doi":"10.1109/CIGRE.2005.1532762","DOIUrl":"https://doi.org/10.1109/CIGRE.2005.1532762","url":null,"abstract":"Progress in the UCTE-IPS/UPS electricity transmission system study causes the posing a question concerned the principles that could be used for coordination of so-called system protection schemes (SPS) for the impending interconnection. Multitude of ways to coordinate SPS is known but it is difficult to select some of them in the UCTE-IPS/UPS case. There is quantity of well known strategies for on-line dynamic security assessment (DSA) as well as large amount of approaches to SPS development in the power systems. At the same time, different practice of the use of SPS in the UCTE power system and the IPS/UPS can become an impediment to progress in unanimous strategy of SPS coordination. Peculiarities of deregulation in power systems produce supplementary obstacles. It is better to debate this topic before developing SPS coordinating structure for the UCTE-IPS/UPS. Two possible strategies for coordination of SPS in the UCTE-IPS/UPS interconnection are suggested. The structures of two modern Russian SPS complexes are proposed for consideration as probable prototypes for SPS complexes in the UCTE-IPS/UPS project. One of the approaches to power system state estimation that has to be fulfilled by SPS complexes and systems is briefly discussed. The suggestion that the general principles of DSA and the UCTE-IPS/UPS emergency control have to be tested at the European and Russian control centers is formulated. As possible places for such tests in Russia the Zeya and Bureya HPP's SPS complexes are shown","PeriodicalId":414346,"journal":{"name":"International Symposium CIGRE/IEEE PES, 2005.","volume":"2019 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114310541","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 : 2005-11-21DOI: 10.1109/CIGRE.2005.1532738
S.S. Pedersen, B. Mo
CIGRE Study committee C5 established a task force called risk management for world markets in 2003. This paper presents the work of the task force and in addition focuses on congestion management as an element in a risk management strategy. The paper is based on results from a survey on risk management. Congestions and outages are major uncertainties for the electric power industry together uncertainties related to the competitive electricity market. Risk management organisation and methods seems to focus on production and trading. The use of financial instruments is an element in a risk management strategy which includes congestion risks. Major uncertainties in the short and long term besides market price are regulatory risks. A challenge for the total risk management of the electricity business is to include the handling of risks related to the regulated business
{"title":"Risks and risk management for competitive electricity markets, report from CIGRE TF C5-2.02","authors":"S.S. Pedersen, B. Mo","doi":"10.1109/CIGRE.2005.1532738","DOIUrl":"https://doi.org/10.1109/CIGRE.2005.1532738","url":null,"abstract":"CIGRE Study committee C5 established a task force called risk management for world markets in 2003. This paper presents the work of the task force and in addition focuses on congestion management as an element in a risk management strategy. The paper is based on results from a survey on risk management. Congestions and outages are major uncertainties for the electric power industry together uncertainties related to the competitive electricity market. Risk management organisation and methods seems to focus on production and trading. The use of financial instruments is an element in a risk management strategy which includes congestion risks. Major uncertainties in the short and long term besides market price are regulatory risks. A challenge for the total risk management of the electricity business is to include the handling of risks related to the regulated business","PeriodicalId":414346,"journal":{"name":"International Symposium CIGRE/IEEE PES, 2005.","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128583348","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 : 2005-11-21DOI: 10.1109/CIGRE.2005.1532742
Q. Heidari
In this paper at first requirements of competition market and market power potentials are discussed in order to point out some key issues to be investigated more carefully by the policy makers and power market managers. Then power market of Iran is studied. The structure of this market, the role of regulator and market manager, as well as the market players are introduced. This paper concludes with some lessons from power market of Iran and some points for its performance enhancement. These could be beneficial for Iran, as well as developing countries that are establishing or modifying their own power market
{"title":"Competition market in power industry, a microeconomic aspect, the case of Iran","authors":"Q. Heidari","doi":"10.1109/CIGRE.2005.1532742","DOIUrl":"https://doi.org/10.1109/CIGRE.2005.1532742","url":null,"abstract":"In this paper at first requirements of competition market and market power potentials are discussed in order to point out some key issues to be investigated more carefully by the policy makers and power market managers. Then power market of Iran is studied. The structure of this market, the role of regulator and market manager, as well as the market players are introduced. This paper concludes with some lessons from power market of Iran and some points for its performance enhancement. These could be beneficial for Iran, as well as developing countries that are establishing or modifying their own power market","PeriodicalId":414346,"journal":{"name":"International Symposium CIGRE/IEEE PES, 2005.","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128584191","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 : 2005-11-21DOI: 10.1109/CIGRE.2005.1532733
Guang Li, Chen-Ching Liu, J. Lawarree, M. Gallanti, Andrea Venturini
Since the deregulation of the electricity power industry, many methods and techniques have been developed to forecast the electricity prices in the competitive environment. This paper classifies and compares different techniques in the literature of electricity price forecasting. The information is summarized based on the technical objectives, scope, time horizon, input data and the level of accuracy. The methods and techniques for electricity price forecasting are categorized into equilibrium analysis, simulation methods, time series, econometric methods, intelligent systems, and volatility analysis
{"title":"State-of-the-art of electricity price forecasting","authors":"Guang Li, Chen-Ching Liu, J. Lawarree, M. Gallanti, Andrea Venturini","doi":"10.1109/CIGRE.2005.1532733","DOIUrl":"https://doi.org/10.1109/CIGRE.2005.1532733","url":null,"abstract":"Since the deregulation of the electricity power industry, many methods and techniques have been developed to forecast the electricity prices in the competitive environment. This paper classifies and compares different techniques in the literature of electricity price forecasting. The information is summarized based on the technical objectives, scope, time horizon, input data and the level of accuracy. The methods and techniques for electricity price forecasting are categorized into equilibrium analysis, simulation methods, time series, econometric methods, intelligent systems, and volatility analysis","PeriodicalId":414346,"journal":{"name":"International Symposium CIGRE/IEEE PES, 2005.","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130650356","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 : 2005-11-21DOI: 10.1109/CIGRE.2005.1532719
K. Purchała, M. Shinkai, F. Regairaz
This paper is based on the survey conducted by the Working Group C5-4 on congestion management. First it describes various market conditions and institutional arrangements in the 18 countries participating in the survey. Then, internal and cross-border congestion management in these countries are presented. The interaction with the electricity market is discussed, considering allocation of transmission capacity, market schedule, congestion management tools and payment for the costs incurred. The survey shows that there is a tendency towards the use of market-based methods. Coordinated market-based measures seem to be the most effective. For the time being however, few systems have experiences with it
{"title":"Practices related to internal and cross-border congestion management","authors":"K. Purchała, M. Shinkai, F. Regairaz","doi":"10.1109/CIGRE.2005.1532719","DOIUrl":"https://doi.org/10.1109/CIGRE.2005.1532719","url":null,"abstract":"This paper is based on the survey conducted by the Working Group C5-4 on congestion management. First it describes various market conditions and institutional arrangements in the 18 countries participating in the survey. Then, internal and cross-border congestion management in these countries are presented. The interaction with the electricity market is discussed, considering allocation of transmission capacity, market schedule, congestion management tools and payment for the costs incurred. The survey shows that there is a tendency towards the use of market-based methods. Coordinated market-based measures seem to be the most effective. For the time being however, few systems have experiences with it","PeriodicalId":414346,"journal":{"name":"International Symposium CIGRE/IEEE PES, 2005.","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132519944","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 : 2005-11-21DOI: 10.1109/CIGRE.2005.1532750
T. Paukatong, J. Puangnak, T. Luewan
The Electricity Generating Authority of Thailand (EGAT) has developed an in-house supervisory control and data acquisition (SCADA) system for a decade. The primary purpose of the EGAT-SCADA system is to assist operators to supervise and control the electricity transmission system and additionally, to reduce technological dependency on foreign technology transferors. With this novel technology, all required information is available. The operators can perform quick responds and precise decision on the operation of the transmission control system. This paper describes the software design concept of three major applications, real-time database (RTDB) server, network color processing (NCP), and power system monitoring (PSM), including their relation in the system in order to bring data to a power network display
{"title":"From real-time data to a power network display: An EGAT-SCADA's conceptual design","authors":"T. Paukatong, J. Puangnak, T. Luewan","doi":"10.1109/CIGRE.2005.1532750","DOIUrl":"https://doi.org/10.1109/CIGRE.2005.1532750","url":null,"abstract":"The Electricity Generating Authority of Thailand (EGAT) has developed an in-house supervisory control and data acquisition (SCADA) system for a decade. The primary purpose of the EGAT-SCADA system is to assist operators to supervise and control the electricity transmission system and additionally, to reduce technological dependency on foreign technology transferors. With this novel technology, all required information is available. The operators can perform quick responds and precise decision on the operation of the transmission control system. This paper describes the software design concept of three major applications, real-time database (RTDB) server, network color processing (NCP), and power system monitoring (PSM), including their relation in the system in order to bring data to a power network display","PeriodicalId":414346,"journal":{"name":"International Symposium CIGRE/IEEE PES, 2005.","volume":"2006 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130900492","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 : 2005-11-21DOI: 10.1109/CIGRE.2005.1532725
J.O.F. Silva, P. Cuervo, J. C. Mateus
In this paper it is presented a new strategy designed with the purpose of achieving revenue adequacy in congested networks that use financial transmission rights - FTR markets. Normally, an independent system operator ISO is required to cover payments to FTR holders through congestion revenues. When this is not possible, there exists an unbalance or revenue inadequacy. Several approaches are used today to distribute or allocate this inadequacy like a pro-rata and future deficit compensation. Because of the disadvantages of these approaches, the method suggested in this paper is to apply the principle of equivalent bilateral exchanges - EBE to allocate transmission inadequacy costs. The advantage is the possibility of incorporating the concept of "pay as used" among agents. Several numerical tests show comparatively the presence of cross-subsidies produced by pro-rata approach and the advantages of using the suggested approach.
{"title":"Revenue adequacy procedure in congested networks through equivalent bilateral exchanges","authors":"J.O.F. Silva, P. Cuervo, J. C. Mateus","doi":"10.1109/CIGRE.2005.1532725","DOIUrl":"https://doi.org/10.1109/CIGRE.2005.1532725","url":null,"abstract":"In this paper it is presented a new strategy designed with the purpose of achieving revenue adequacy in congested networks that use financial transmission rights - FTR markets. Normally, an independent system operator ISO is required to cover payments to FTR holders through congestion revenues. When this is not possible, there exists an unbalance or revenue inadequacy. Several approaches are used today to distribute or allocate this inadequacy like a pro-rata and future deficit compensation. Because of the disadvantages of these approaches, the method suggested in this paper is to apply the principle of equivalent bilateral exchanges - EBE to allocate transmission inadequacy costs. The advantage is the possibility of incorporating the concept of \"pay as used\" among agents. Several numerical tests show comparatively the presence of cross-subsidies produced by pro-rata approach and the advantages of using the suggested approach.","PeriodicalId":414346,"journal":{"name":"International Symposium CIGRE/IEEE PES, 2005.","volume":"1976 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130156834","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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