Paula Kayano - Academia.edu (original) (raw)
Papers by Paula Kayano
IEEE Latin America Transactions, Jun 1, 2012
ABSTRACT
CITENEL 2003 : Anais, 2003
2004 IEEE/PES Transmision and Distribution Conference and Exposition: Latin America (IEEE Cat. No. 04EX956)
This work presents a methodology for estimating the maximum power that can be extracted from dist... more This work presents a methodology for estimating the maximum power that can be extracted from distribution substation transformers based on (i) estimated values of future load, (ii) current temperature values measured at various locations within the transformer, and (iii) transformer reliability requirements. The final goal of the methodology is to provide P sensible means of controlling transformer overloads, especially at peak times during the daily load curve. The methodology has been implemented as a software tool running on computers in the Distribution System Control Center. The sofhvare makes use of real-time data acquired directly from the local loading control subsystem installed in two major distribution substations within the CPFL (Companhia Paulistra de Forqa e Luz) system.
2014 IEEE PES Transmission & Distribution Conference and Exposition - Latin America (PES T&D-LA), 2014
This exploratory paper introduces T&ERTTA, a new methodological approach for technical & ... more This exploratory paper introduces T&ERTTA, a new methodological approach for technical & economical power transformer assessment in digitalized substations, providing improved life cycle management, integrating Utility Maintenance, Planning and Operation areas. The integrated asset management is achieved via a smart real time function that relates transformer true available life to its planned life and its amortization profile. Based on new smart substation CASF concept, which provides friendly usage of substation detailed operation and maintenance (O&M) real time data base, the methodology calculates real daily loss of technical transformer life, based on solid insulation degradation and other key substation/transformer data, computing its life much more accurately than standardized life loss analysis based on temperature. By means of correlating it with the expectation of planned technical life and transformer amortization period, T&ERTTA allows optimal safe daily dispatch, according to dynamic - or more flexible - planning criteria for system operation and/or expansion, including modularization of the substation assets revenue, investments postponement, and MW investment assertiveness, helping Utility strategic decision-maker in critical processes.
18th International Conference and Exhibition on Electricity Distribution (CIRED 2005), 2005
2004 IEEE/PES Transmision and Distribution Conference and Exposition: Latin America (IEEE Cat. No. 04EX956)
Traditionally, transformer maintenance is done based on time, while circuit breaker maintenance i... more Traditionally, transformer maintenance is done based on time, while circuit breaker maintenance is based on the number of maneuvers performed. A real-time monitoring system aims to allow the maintenance to be based on the equipment's actual conditions. Real-time monitoring brings additional benefits, such as: better equipment usage, better maintenance planning, reduction of emergency impediments due to failures, and equipment life cycle management improvements. The real-time monitoring system that was designed has functionalities that assist in the diagnosis of the main equipment installed at a substation: transformers and circuit breakers.
2013 IEEE PES Conference on Innovative Smart Grid Technologies (ISGT Latin America), 2013
ABSTRACT
2018 IEEE 9th Power, Instrumentation and Measurement Meeting (EPIM)
2015 IEEE PES Innovative Smart Grid Technologies Latin America (ISGT LATAM), 2015
International Journal of Electronics and Electrical Engineering
Recognizing that to survive in 21 th century, utilities must take advantages of smart platforms, ... more Recognizing that to survive in 21 th century, utilities must take advantages of smart platforms, IEC has provided a homogeneous IT landscape based on CIM/XLM standardized data format for source data. It allows utilities to vitally combine their large number of autonomous IT systems, with great potential for optimizing their core processes. But this landscape itself will not be enough, unless utility actually and smartly connects IEDs and systems at that surviving critical level. This article presents an approach that tries to make easier the utility improve core processes, based on substation "smartizing", by means of creating in smart substations, key-value operating and functional data, information and knowledge, in a continuous upstream add-value process, making them suited to each IED, System and decision maker at every utility level. "Smartizing" architecture is fully IEC compliant. The approach is being applied in a 25 MVA distribution substation in Brazil, in a 10 GW demand peak utility group.
IEEE Latin America Transactions
ABSTRACT
IEEE Latin America Transactions, Jun 1, 2012
ABSTRACT
CITENEL 2003 : Anais, 2003
2004 IEEE/PES Transmision and Distribution Conference and Exposition: Latin America (IEEE Cat. No. 04EX956)
This work presents a methodology for estimating the maximum power that can be extracted from dist... more This work presents a methodology for estimating the maximum power that can be extracted from distribution substation transformers based on (i) estimated values of future load, (ii) current temperature values measured at various locations within the transformer, and (iii) transformer reliability requirements. The final goal of the methodology is to provide P sensible means of controlling transformer overloads, especially at peak times during the daily load curve. The methodology has been implemented as a software tool running on computers in the Distribution System Control Center. The sofhvare makes use of real-time data acquired directly from the local loading control subsystem installed in two major distribution substations within the CPFL (Companhia Paulistra de Forqa e Luz) system.
2014 IEEE PES Transmission & Distribution Conference and Exposition - Latin America (PES T&D-LA), 2014
This exploratory paper introduces T&ERTTA, a new methodological approach for technical & ... more This exploratory paper introduces T&ERTTA, a new methodological approach for technical & economical power transformer assessment in digitalized substations, providing improved life cycle management, integrating Utility Maintenance, Planning and Operation areas. The integrated asset management is achieved via a smart real time function that relates transformer true available life to its planned life and its amortization profile. Based on new smart substation CASF concept, which provides friendly usage of substation detailed operation and maintenance (O&M) real time data base, the methodology calculates real daily loss of technical transformer life, based on solid insulation degradation and other key substation/transformer data, computing its life much more accurately than standardized life loss analysis based on temperature. By means of correlating it with the expectation of planned technical life and transformer amortization period, T&ERTTA allows optimal safe daily dispatch, according to dynamic - or more flexible - planning criteria for system operation and/or expansion, including modularization of the substation assets revenue, investments postponement, and MW investment assertiveness, helping Utility strategic decision-maker in critical processes.
18th International Conference and Exhibition on Electricity Distribution (CIRED 2005), 2005
2004 IEEE/PES Transmision and Distribution Conference and Exposition: Latin America (IEEE Cat. No. 04EX956)
Traditionally, transformer maintenance is done based on time, while circuit breaker maintenance i... more Traditionally, transformer maintenance is done based on time, while circuit breaker maintenance is based on the number of maneuvers performed. A real-time monitoring system aims to allow the maintenance to be based on the equipment's actual conditions. Real-time monitoring brings additional benefits, such as: better equipment usage, better maintenance planning, reduction of emergency impediments due to failures, and equipment life cycle management improvements. The real-time monitoring system that was designed has functionalities that assist in the diagnosis of the main equipment installed at a substation: transformers and circuit breakers.
2013 IEEE PES Conference on Innovative Smart Grid Technologies (ISGT Latin America), 2013
ABSTRACT
2018 IEEE 9th Power, Instrumentation and Measurement Meeting (EPIM)
2015 IEEE PES Innovative Smart Grid Technologies Latin America (ISGT LATAM), 2015
International Journal of Electronics and Electrical Engineering
Recognizing that to survive in 21 th century, utilities must take advantages of smart platforms, ... more Recognizing that to survive in 21 th century, utilities must take advantages of smart platforms, IEC has provided a homogeneous IT landscape based on CIM/XLM standardized data format for source data. It allows utilities to vitally combine their large number of autonomous IT systems, with great potential for optimizing their core processes. But this landscape itself will not be enough, unless utility actually and smartly connects IEDs and systems at that surviving critical level. This article presents an approach that tries to make easier the utility improve core processes, based on substation "smartizing", by means of creating in smart substations, key-value operating and functional data, information and knowledge, in a continuous upstream add-value process, making them suited to each IED, System and decision maker at every utility level. "Smartizing" architecture is fully IEC compliant. The approach is being applied in a 25 MVA distribution substation in Brazil, in a 10 GW demand peak utility group.
IEEE Latin America Transactions
ABSTRACT