Pub Date : 2019-05-01DOI: 10.1109/AEIT-HVDC.2019.8740544
L. Michi, G. Donnini, C. Giordano, F. Scavo, E. G. Luciano, B. Aluisio, C. Vergine, M. Pompili, S. Lauria, L. Calcara, A. L'Abbate
High Voltage Direct Current (HVDC) technology will play a more central role in the future grid development than it had in the past due to the technological developments, the increasing use of renewable energy resources and the more ambitious European goals. These evolutions introduce new challenges in power transmission planning and have an impact on the choices of technology and the geographical location of interconnection projects. This paper will give a brief introduction on the benefits that HVDC can provide to the power system, focusing on their penetration in the European system, before dealing with a more detailed description of key HVDC projects in the Italian network.
{"title":"New HVDC technology in Pan-European power system planning","authors":"L. Michi, G. Donnini, C. Giordano, F. Scavo, E. G. Luciano, B. Aluisio, C. Vergine, M. Pompili, S. Lauria, L. Calcara, A. L'Abbate","doi":"10.1109/AEIT-HVDC.2019.8740544","DOIUrl":"https://doi.org/10.1109/AEIT-HVDC.2019.8740544","url":null,"abstract":"High Voltage Direct Current (HVDC) technology will play a more central role in the future grid development than it had in the past due to the technological developments, the increasing use of renewable energy resources and the more ambitious European goals. These evolutions introduce new challenges in power transmission planning and have an impact on the choices of technology and the geographical location of interconnection projects. This paper will give a brief introduction on the benefits that HVDC can provide to the power system, focusing on their penetration in the European system, before dealing with a more detailed description of key HVDC projects in the Italian network.","PeriodicalId":186931,"journal":{"name":"2019 AEIT HVDC International Conference (AEIT HVDC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134512394","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 : 2019-05-01DOI: 10.1109/AEIT-HVDC.2019.8740372
L. Michi, E. Carlini, T. B. Scirocco, G. Bruno, L. Caciolli, M. Cortese, G. Ramundo, M. Okuda, T. Murao
This paper describes the protection system of MON.ITA HVDC Link in all its parts, which has been designed taking into account the different configuration possibilities. AC protection relays, including AC connections, filters and transformers 400/205/205 kV and DC protection relays are presented with a functional description of the entire protection system. Regarding DC part, the protections of AC/DC conversion system, DC Cables and Common Neutral system are reviewed. General protection criteria, adopted schemes to manage main critical events and operating sequences to stop AC/DC conversion, depending on the severity of the fault, are explained.
{"title":"MON.ITA HVDC Link AC & DC Protection System","authors":"L. Michi, E. Carlini, T. B. Scirocco, G. Bruno, L. Caciolli, M. Cortese, G. Ramundo, M. Okuda, T. Murao","doi":"10.1109/AEIT-HVDC.2019.8740372","DOIUrl":"https://doi.org/10.1109/AEIT-HVDC.2019.8740372","url":null,"abstract":"This paper describes the protection system of MON.ITA HVDC Link in all its parts, which has been designed taking into account the different configuration possibilities. AC protection relays, including AC connections, filters and transformers 400/205/205 kV and DC protection relays are presented with a functional description of the entire protection system. Regarding DC part, the protections of AC/DC conversion system, DC Cables and Common Neutral system are reviewed. General protection criteria, adopted schemes to manage main critical events and operating sequences to stop AC/DC conversion, depending on the severity of the fault, are explained.","PeriodicalId":186931,"journal":{"name":"2019 AEIT HVDC International Conference (AEIT HVDC)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115440484","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 : 2019-05-01DOI: 10.1109/AEIT-HVDC.2019.8740646
C. Pisani, G. Bruno, H. Saad, P. Rault, B. Clerc
Voltage Source Converter (VSC) is a promising technology in High Voltage Direct Current (HVDC) transmission also due to its so called black start up capability. Black start capability consists in the ability of the HVDC system to restore back the power to an Alternating Current (AC) grid which experienced a black out without particular constraints on short-circuit power that should be ensured. Restoration process with VSC-HVDC presents some differences and new challenges with respect to traditional restoration strategies which have to be carefully investigated. In light of this need, the paper deals with a functional validation of a real VSC-HVDC control system in black start operating using a real time (RT) simulator and replicas of the INELFE HVDC control system.
{"title":"Functional validation of a real VSC HVDC control system in black start operation","authors":"C. Pisani, G. Bruno, H. Saad, P. Rault, B. Clerc","doi":"10.1109/AEIT-HVDC.2019.8740646","DOIUrl":"https://doi.org/10.1109/AEIT-HVDC.2019.8740646","url":null,"abstract":"Voltage Source Converter (VSC) is a promising technology in High Voltage Direct Current (HVDC) transmission also due to its so called black start up capability. Black start capability consists in the ability of the HVDC system to restore back the power to an Alternating Current (AC) grid which experienced a black out without particular constraints on short-circuit power that should be ensured. Restoration process with VSC-HVDC presents some differences and new challenges with respect to traditional restoration strategies which have to be carefully investigated. In light of this need, the paper deals with a functional validation of a real VSC-HVDC control system in black start operating using a real time (RT) simulator and replicas of the INELFE HVDC control system.","PeriodicalId":186931,"journal":{"name":"2019 AEIT HVDC International Conference (AEIT HVDC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131531624","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 : 2019-05-01DOI: 10.1109/AEIT-HVDC.2019.8740638
M. Giuntoli, S. Schmitt, V. Biagini, M. Subasic, G. Gutermuth, A. Krontiris
This paper presents a novel method to optimize the placement of a given number of HVDC links. An optimization criterion, based on the minimization of branch loading, is proposed as a valid alternative to other criteria widely used in the literature. To take into account the uncertainty given by the grid operating conditions, i.e. by load demand and generator dispatching, a double stage stochastic optimization is proposed. The validity of the proposed approach is demonstrated by different analysis performed on the IEEE39 test grid. Results show effectiveness of the method in improving grid security. Indirectly a more economic grid operation is achieved and interesting findings related to the use of the HVDC links in various grid operating conditions are drawn.
{"title":"Placement of HVDC links for reduction of network congestions","authors":"M. Giuntoli, S. Schmitt, V. Biagini, M. Subasic, G. Gutermuth, A. Krontiris","doi":"10.1109/AEIT-HVDC.2019.8740638","DOIUrl":"https://doi.org/10.1109/AEIT-HVDC.2019.8740638","url":null,"abstract":"This paper presents a novel method to optimize the placement of a given number of HVDC links. An optimization criterion, based on the minimization of branch loading, is proposed as a valid alternative to other criteria widely used in the literature. To take into account the uncertainty given by the grid operating conditions, i.e. by load demand and generator dispatching, a double stage stochastic optimization is proposed. The validity of the proposed approach is demonstrated by different analysis performed on the IEEE39 test grid. Results show effectiveness of the method in improving grid security. Indirectly a more economic grid operation is achieved and interesting findings related to the use of the HVDC links in various grid operating conditions are drawn.","PeriodicalId":186931,"journal":{"name":"2019 AEIT HVDC International Conference (AEIT HVDC)","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123167086","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 : 2019-05-01DOI: 10.1109/AEIT-HVDC.2019.8740651
A. Battaglia, L. Buono, R. De Zan, E. Di Bartolomeo, M. Marzinotto, F. Palone, M. Pazienza, F. Pede, L. Michi, E. Carlini, T. B. Scirocco, G. Bruno, R. Gnudi, G. Pecoraro, C. Pisani
The SA.CO.I 2 HVDC link, connecting Sardinia, Corsica and Italian mainland, was the first multi-terminal scheme to enter in operation in Europe; after 30 year of operation it is still the only multi-terminal link in ENTOSE network. In order to face the new challenges of renewable energy integration, Terna and EDF are going to refurbish and upgrade the existing link. Low short circuit power and inertia, as well as fast recovery after dc-line fault are some of the main issues to be overcome. The paper deals with the preliminary studies on Sa.Co.I 3 project, aimed at identifying the required link performances and technological solutions.
{"title":"Analysis of the plant and operational requirements for the design of a flexible and new generation LCC HVDC system: the Sa.Co.I 3 technology case","authors":"A. Battaglia, L. Buono, R. De Zan, E. Di Bartolomeo, M. Marzinotto, F. Palone, M. Pazienza, F. Pede, L. Michi, E. Carlini, T. B. Scirocco, G. Bruno, R. Gnudi, G. Pecoraro, C. Pisani","doi":"10.1109/AEIT-HVDC.2019.8740651","DOIUrl":"https://doi.org/10.1109/AEIT-HVDC.2019.8740651","url":null,"abstract":"The SA.CO.I 2 HVDC link, connecting Sardinia, Corsica and Italian mainland, was the first multi-terminal scheme to enter in operation in Europe; after 30 year of operation it is still the only multi-terminal link in ENTOSE network. In order to face the new challenges of renewable energy integration, Terna and EDF are going to refurbish and upgrade the existing link. Low short circuit power and inertia, as well as fast recovery after dc-line fault are some of the main issues to be overcome. The paper deals with the preliminary studies on Sa.Co.I 3 project, aimed at identifying the required link performances and technological solutions.","PeriodicalId":186931,"journal":{"name":"2019 AEIT HVDC International Conference (AEIT HVDC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132855790","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 : 2019-05-01DOI: 10.1109/AEIT-HVDC.2019.8740521
S. Barsali, M. Ceraolo, P. Pelacchi, D. Poli
This paper shows how a VSC-HVDC system can be profitably used as a black start unit to restart a thermal power plant, as well as to help it to follow the constrained power ramping up to its technical minimum. A frequency vs real power and voltage vs reactive power droop control is proposed for the receiving end converter of the link, including a Local Frequency Integrator function which enables the system to be easily reconnected with other units.
{"title":"Use of VSC-HVDC links for power system restoration","authors":"S. Barsali, M. Ceraolo, P. Pelacchi, D. Poli","doi":"10.1109/AEIT-HVDC.2019.8740521","DOIUrl":"https://doi.org/10.1109/AEIT-HVDC.2019.8740521","url":null,"abstract":"This paper shows how a VSC-HVDC system can be profitably used as a black start unit to restart a thermal power plant, as well as to help it to follow the constrained power ramping up to its technical minimum. A frequency vs real power and voltage vs reactive power droop control is proposed for the receiving end converter of the link, including a Local Frequency Integrator function which enables the system to be easily reconnected with other units.","PeriodicalId":186931,"journal":{"name":"2019 AEIT HVDC International Conference (AEIT HVDC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114829543","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 : 2019-05-01DOI: 10.1109/AEIT-HVDC.2019.8740369
C. Saldaña, G. Calzolari
In order to interconnect the power systems of Uruguay and Brazil with different frequencies, a new 500 MW HVDC back-to-back (HVDC BtB) frequency converter station was built. A complete model of this HVDC BtB has been developed by the authors with ATP (Alternative Transients Program) for conducting power system electromagnetic transient (EMT) simulations. In relation to the work carried out, this paper presents the following issues: the main technical characteristics of the HVDC BtB, the Static Characteristic under normal and abnormal operating conditions and control loops associated, bridge converter and thyristor firing scheme modelling, power converter transformers modelling, temporary over/under voltage control, initialization of the back-to-back model, application and removal of balanced three-phase fault at both rectifier and inverter sides, single phase fault with successful auto-reclosure at Uruguay side. In order to evaluate the ATP model the simulation results were compared against PSCAD and RTDS results given by the manufacturer.
{"title":"Modelling of the 500 MW Back-to-Back Converter Station between Uruguay and Brazil in ATP","authors":"C. Saldaña, G. Calzolari","doi":"10.1109/AEIT-HVDC.2019.8740369","DOIUrl":"https://doi.org/10.1109/AEIT-HVDC.2019.8740369","url":null,"abstract":"In order to interconnect the power systems of Uruguay and Brazil with different frequencies, a new 500 MW HVDC back-to-back (HVDC BtB) frequency converter station was built. A complete model of this HVDC BtB has been developed by the authors with ATP (Alternative Transients Program) for conducting power system electromagnetic transient (EMT) simulations. In relation to the work carried out, this paper presents the following issues: the main technical characteristics of the HVDC BtB, the Static Characteristic under normal and abnormal operating conditions and control loops associated, bridge converter and thyristor firing scheme modelling, power converter transformers modelling, temporary over/under voltage control, initialization of the back-to-back model, application and removal of balanced three-phase fault at both rectifier and inverter sides, single phase fault with successful auto-reclosure at Uruguay side. In order to evaluate the ATP model the simulation results were compared against PSCAD and RTDS results given by the manufacturer.","PeriodicalId":186931,"journal":{"name":"2019 AEIT HVDC International Conference (AEIT HVDC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127643197","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 : 2019-05-01DOI: 10.1109/AEIT-HVDC.2019.8740447
L. Coronado, C. Longás, R. Rivas, S. Sanz, J. Bola, P. Junco, G. Perez
In October 2015 a new HVDC-VSC interconnection between France and Spain was commissioned in the Eastern Pyrenees, becoming the first Europe's DC underground cable embedded within a synchronous and meshed AC network. Given this particularity, the new interconnection required special operation features, which guaranteed an improvement in system security and a commercial transfer capacity increase from 1.400 to up to 2.800111This has enabled the French-Spanish interconnection to reach higher values of Available Transmission Capacity in some hours MW. This paper will summarize the most important characteristics of the HVDC link, an overview of the implemented smart control system and the most relevant items in real time operational experience faced by REE during these years in service.
{"title":"INELFE: main description and operational experience over three years in service","authors":"L. Coronado, C. Longás, R. Rivas, S. Sanz, J. Bola, P. Junco, G. Perez","doi":"10.1109/AEIT-HVDC.2019.8740447","DOIUrl":"https://doi.org/10.1109/AEIT-HVDC.2019.8740447","url":null,"abstract":"In October 2015 a new HVDC-VSC interconnection between France and Spain was commissioned in the Eastern Pyrenees, becoming the first Europe's DC underground cable embedded within a synchronous and meshed AC network. Given this particularity, the new interconnection required special operation features, which guaranteed an improvement in system security and a commercial transfer capacity increase from 1.400 to up to 2.800111This has enabled the French-Spanish interconnection to reach higher values of Available Transmission Capacity in some hours MW. This paper will summarize the most important characteristics of the HVDC link, an overview of the implemented smart control system and the most relevant items in real time operational experience faced by REE during these years in service.","PeriodicalId":186931,"journal":{"name":"2019 AEIT HVDC International Conference (AEIT HVDC)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114990805","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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