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Programa de resposta à demanda baseado em preços aplicado a consumidores de baixa tensãoFerraz, Bibiana Maitê Petry January 2016 (has links)
O incremento nos padrões de consumo de energia elétrica e o fácil acesso a diversas tecnologias eletroeletrônicas têm contribuído para a superação anual dos índices de consumo de eletricidade. Tendo em vista que esse insumo ainda não é economicamente armazenável em larga escala, se faz necessário manter o equilíbrio em tempo real entre a oferta/demanda mais perdas. Entretanto, a maioria dos consumidores brasileiros atendidos em baixa tensão paga tarifas baseadas nos custos médios, os quais ocultam os efeitos da alta concentração de consumo de eletricidade em determinados horários do dia. Nesse contexto, o presente estudo analisa o impacto que Programas de Resposta à Demanda (PRD), baseado em tarifas com diferenciação horária, exercem sobre o desempenho dos sistemas de distribuição. A metodologia proposta utiliza o conceito de elasticidade-preço da demanda de energia elétrica, por meio de uma abordagem matricial e permite representar diferentes tipos de consumidores. A partir de uma análise de sensibilidade dos estudos de casos, verificou-se a influência dos parâmetros que compõem as equações do PRD proposto. Para avaliar o desempenho do modelo, foram feitos estudos numéricos usando uma versão modificada do sistema teste IEEE de 34 nós. A análise de sensibilidade entre os estudos de caso apresentou uma avaliação do percentual de adesão dos consumidores, bem como o comportamento das perdas ativas mensais e do perfil de tensão. Os resultados obtidos no presente estudo evidenciam a validade da abordagem proposta, a partir de uma formulação simplificada, além de demonstrar a potencial aplicabilidade a casos reais. / Power consumption behavior increase and easy access to electroelectronics technologies had contributed to annual power consumption rates surpass. As there is not yet an economically sustainable way to store electric power it is necessary to maintain the balance between offer and power demand (considering losses). Brazilian customers majority supplied in low voltage are charged by its mean power consumption masking peak consumption in certain periods of the day. Within this reality the present work analysis the impact of Demand Response Programs (DRP) using Time-Of-Use tariff (TOU) over the power distribution system’s performance. The proposed methodology applies the concept of Price Elasticity demand and uses the representation of different consumers’ types in a matrix approach. The DRP parameters’ variation impact was checked using a sensitivity analysis. In order to evaluate the performance of the proposed model numerical studies were done using the IEEE 34 modified node test feeder. A sensitivity analysis among the case studies presents the customers adherence percentage and the monthly active power losses and voltage profile. The methodology's results besides supporting the proposal approach from a simplified formulation show the potential use on real cases.
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Programa de resposta à demanda baseado em preços aplicado a consumidores de baixa tensãoFerraz, Bibiana Maitê Petry January 2016 (has links)
O incremento nos padrões de consumo de energia elétrica e o fácil acesso a diversas tecnologias eletroeletrônicas têm contribuído para a superação anual dos índices de consumo de eletricidade. Tendo em vista que esse insumo ainda não é economicamente armazenável em larga escala, se faz necessário manter o equilíbrio em tempo real entre a oferta/demanda mais perdas. Entretanto, a maioria dos consumidores brasileiros atendidos em baixa tensão paga tarifas baseadas nos custos médios, os quais ocultam os efeitos da alta concentração de consumo de eletricidade em determinados horários do dia. Nesse contexto, o presente estudo analisa o impacto que Programas de Resposta à Demanda (PRD), baseado em tarifas com diferenciação horária, exercem sobre o desempenho dos sistemas de distribuição. A metodologia proposta utiliza o conceito de elasticidade-preço da demanda de energia elétrica, por meio de uma abordagem matricial e permite representar diferentes tipos de consumidores. A partir de uma análise de sensibilidade dos estudos de casos, verificou-se a influência dos parâmetros que compõem as equações do PRD proposto. Para avaliar o desempenho do modelo, foram feitos estudos numéricos usando uma versão modificada do sistema teste IEEE de 34 nós. A análise de sensibilidade entre os estudos de caso apresentou uma avaliação do percentual de adesão dos consumidores, bem como o comportamento das perdas ativas mensais e do perfil de tensão. Os resultados obtidos no presente estudo evidenciam a validade da abordagem proposta, a partir de uma formulação simplificada, além de demonstrar a potencial aplicabilidade a casos reais. / Power consumption behavior increase and easy access to electroelectronics technologies had contributed to annual power consumption rates surpass. As there is not yet an economically sustainable way to store electric power it is necessary to maintain the balance between offer and power demand (considering losses). Brazilian customers majority supplied in low voltage are charged by its mean power consumption masking peak consumption in certain periods of the day. Within this reality the present work analysis the impact of Demand Response Programs (DRP) using Time-Of-Use tariff (TOU) over the power distribution system’s performance. The proposed methodology applies the concept of Price Elasticity demand and uses the representation of different consumers’ types in a matrix approach. The DRP parameters’ variation impact was checked using a sensitivity analysis. In order to evaluate the performance of the proposed model numerical studies were done using the IEEE 34 modified node test feeder. A sensitivity analysis among the case studies presents the customers adherence percentage and the monthly active power losses and voltage profile. The methodology's results besides supporting the proposal approach from a simplified formulation show the potential use on real cases.
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Programa de resposta à demanda baseado em preços aplicado a consumidores de baixa tensãoFerraz, Bibiana Maitê Petry January 2016 (has links)
O incremento nos padrões de consumo de energia elétrica e o fácil acesso a diversas tecnologias eletroeletrônicas têm contribuído para a superação anual dos índices de consumo de eletricidade. Tendo em vista que esse insumo ainda não é economicamente armazenável em larga escala, se faz necessário manter o equilíbrio em tempo real entre a oferta/demanda mais perdas. Entretanto, a maioria dos consumidores brasileiros atendidos em baixa tensão paga tarifas baseadas nos custos médios, os quais ocultam os efeitos da alta concentração de consumo de eletricidade em determinados horários do dia. Nesse contexto, o presente estudo analisa o impacto que Programas de Resposta à Demanda (PRD), baseado em tarifas com diferenciação horária, exercem sobre o desempenho dos sistemas de distribuição. A metodologia proposta utiliza o conceito de elasticidade-preço da demanda de energia elétrica, por meio de uma abordagem matricial e permite representar diferentes tipos de consumidores. A partir de uma análise de sensibilidade dos estudos de casos, verificou-se a influência dos parâmetros que compõem as equações do PRD proposto. Para avaliar o desempenho do modelo, foram feitos estudos numéricos usando uma versão modificada do sistema teste IEEE de 34 nós. A análise de sensibilidade entre os estudos de caso apresentou uma avaliação do percentual de adesão dos consumidores, bem como o comportamento das perdas ativas mensais e do perfil de tensão. Os resultados obtidos no presente estudo evidenciam a validade da abordagem proposta, a partir de uma formulação simplificada, além de demonstrar a potencial aplicabilidade a casos reais. / Power consumption behavior increase and easy access to electroelectronics technologies had contributed to annual power consumption rates surpass. As there is not yet an economically sustainable way to store electric power it is necessary to maintain the balance between offer and power demand (considering losses). Brazilian customers majority supplied in low voltage are charged by its mean power consumption masking peak consumption in certain periods of the day. Within this reality the present work analysis the impact of Demand Response Programs (DRP) using Time-Of-Use tariff (TOU) over the power distribution system’s performance. The proposed methodology applies the concept of Price Elasticity demand and uses the representation of different consumers’ types in a matrix approach. The DRP parameters’ variation impact was checked using a sensitivity analysis. In order to evaluate the performance of the proposed model numerical studies were done using the IEEE 34 modified node test feeder. A sensitivity analysis among the case studies presents the customers adherence percentage and the monthly active power losses and voltage profile. The methodology's results besides supporting the proposal approach from a simplified formulation show the potential use on real cases.
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A scalable business model for mass customization of broadband services in the emerging Africa market / Dawid Pieter de WetDe Wet, Dawid Pieter January 2012 (has links)
Africa’s rapid adoption of the mobile phone is quickly closing the digital divide in voice services. But, just as one divide is closing, another one is widening. Consumers almost everywhere are demanding
more services and higher Internet access data rates. In the developing world the knowledge gained
through access to information is creating unprecedented opportunities and is having a dramatic
impact on the way people live and work. Africa, however, has been largely left behind in the shift to
broadband. Increasing the availability and affordability of broadband services is thus high on the
agenda for policy makers in Africa, though it will require major efforts from both government and the
private sector.
Fundamental to the all efforts to close the “digital divide” is the need to provide a ubiquitous and
affordable access network that will enable distribution of broadband services to anywhere, and
anytime throughout Africa. While many kinds of broadband services are being offered to the African
population, the currently available services have failed to reach the majority of Africans living in rural
areas. This poses a very pertinent question that justifies further investigations: why have the existing
broadband services failed to satisfy Africa’s need for a ubiquitous digital communication service. The
lack of penetration of the existing services makes it clear that a different technology and service
offering is needed, a service offering that is affordable to the large consumer market segment and
which can complement the mobile and ADSL broadband networks to provide services to all of Africa
on a cost effective basis.
This research work investigates the current business and technology domains and develops new
knowledge and the insights that are required firstly to understand why existing broadband services
are failing to reach rural Africa and secondly to understand what criteria must be satisfied to deliver
broadband access services to the mass consumer Africa market. The research work focuses on the
interrelationships between markets, technology and business of the consumer broadband market
and defines new thinking as reference to provide guidance to the future development of more
suitable broadband offerings for the rural African market.
The study centres around three principal areas of knowledge contribution.
Analysis of the primary factors impacting the delivery of broadband services
Firstly the study addresses the current market dynamics and technology realities to determine two
critical aspects: 1) Can the mass market afford broadband services or will it remain the privilege of
the higher income groups? And, 2) Can existing mobile broadband , ADSL and satellite access services
meet the demands to service the mass market or is an alternative technology option required?
Through analytical review the study determined that there is a large, and growing, middle class
market that can afford broadband access services. This market sector is quantified in terms of
consumer income levels and demographic user data. The study formulates the commercial and
service criteria applicable to a broadband access service on servicing this target market.
The study further investigates the availability, affordability and market penetration of the current
mobile and ADSL broadband services and found that the available service options cannot effectively
meet the current and future demand. The limitation in meeting the current market demand leads to
a large under serviced consumer market in Africa. The study proposes a unique approach to quantify
the specific under-serviced gap, which will not be met by currently available broadband technologies.
The technology comparative study provides new insight into the limitations of mobile 3G broadband
services and why this technology will not be able to meet the future demand for consumer
broadband services in Africa. The technology study furthermore quantifies the advantages of using
satellite technology to implement a mass consumer broadband service in Africa. The study proves
that the ubiquitous nature and rapid deployment capabilities of satellite access networks provides
distinct benefits when deploying a mass consumer network which makes satellite the technology of
choice for consumer broadband services. We then continue to assess the ability of existing satellite
broadband offerings to satisfy the needs of African end-users, and find that those offerings have
been optimized for the needs and affordability levels of customers from the develop world. The
result is that satellite broadband services aimed at the African end-user is primarily used by
corporate and institutional customers, with little penetration of the consumer market. This finding
provides the motivation for developing a business model that can leverage available technology to
effectively service the African consumer market.
Innovation of new concepts to support a viable broadband business strategy
The mobile prepay model as well as the DStv pay-TV subscription services have demonstrated the
need for a specific business innovation to ensure successful market adoption of new technologies.
Both these industries have demonstrated that innovative approaches in the commercialization of
technology solutions are critical to ensure the mass adoption thereof. The second section of the
study therefore focuses on the innovations that are required to overcome the obstacles as identified
in section 1 in order to arrive at a business strategy and business model that will prove to be viable in
the delivery of broadband services to the rural African consumer market.
The first challenge is the selection of the most appropriate technology platforms and the
architectural design of the delivery systems to effectively service the mass consumer market. In
order to adapt the business models employed by existing satellite broadband service providers the
study defines the following two specific business innovation concepts that contribute to a new
business paradigm for mass market broadband access services:
1) Through applied billing model innovation the study defines a new billing structure for
broadband services and set a completely new paradigm for users to influence the cost of the
service. The new billing model provides end-user the capability to adapt their broadband
usage patterns to meet their budget constraints.
2) To successfully deliver a technology service to an emerging market requires a very specific
organisational structure that effectively integrates knowledge, capability and funding while
minimizing risk and uncertainty. The study proposes a new symbiotic organisational structure
that elegantly combines capability and knowledge while minimizing funding requirements to
ensure the acceptable market development risk.
Development of a business model simulator for satellite broadband service delivery
The deployment of a new type of satellite broadband service to rural Africa on an experimental basis
is too expensive to be conducted for research purposes. A more practical approach that is also
widely used in other domains of engineering is to construct a simulated model of the system being
studied. The third knowledge contribution area of the study therefore focuses on constructing a
mathematical model of the expected behavior of a business operation that provides satellite based
broadband services to the African market. This simulator can be applied to quantitatively analyze
various existing or proposed new business strategies. The business model simulation integrates all
the business, market, technology and commercial relationships that impacts on the expected
behavior of such an operation and provides a quantified model of expected business behavior based
on the underlying dynamics of the satellite broadband industry.
The development and validation of the business model simulator represents a unique contribution to
this industry as no results of a similar model that represents the operations of a satellite broadband
access service provider has been published before. The model empowers Service Providers and
industry stakeholders to analyze different business strategies and to quantify the impact of various
business decisions. In general it can be stated that this research work adds knowledge and insight to
the field of applied business strategy as applicable to providing advanced technology-based services
for emerging markets.
The final outcome of this research study is the business model simulator. It integrates various market
and business elements as well as satellite network engineering practises into an integrated financial
cost modelling, business scenario planning and engineering network design tool. Through this
integration of known disciplines the study provides an additional extension to the field of satellite
business engineering. / PhD (Electronic Engineering), North-West University, Potchefstroom Campus, 2013
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A scalable business model for mass customization of broadband services in the emerging Africa market / Dawid Pieter de WetDe Wet, Dawid Pieter January 2012 (has links)
Africa’s rapid adoption of the mobile phone is quickly closing the digital divide in voice services. But, just as one divide is closing, another one is widening. Consumers almost everywhere are demanding
more services and higher Internet access data rates. In the developing world the knowledge gained
through access to information is creating unprecedented opportunities and is having a dramatic
impact on the way people live and work. Africa, however, has been largely left behind in the shift to
broadband. Increasing the availability and affordability of broadband services is thus high on the
agenda for policy makers in Africa, though it will require major efforts from both government and the
private sector.
Fundamental to the all efforts to close the “digital divide” is the need to provide a ubiquitous and
affordable access network that will enable distribution of broadband services to anywhere, and
anytime throughout Africa. While many kinds of broadband services are being offered to the African
population, the currently available services have failed to reach the majority of Africans living in rural
areas. This poses a very pertinent question that justifies further investigations: why have the existing
broadband services failed to satisfy Africa’s need for a ubiquitous digital communication service. The
lack of penetration of the existing services makes it clear that a different technology and service
offering is needed, a service offering that is affordable to the large consumer market segment and
which can complement the mobile and ADSL broadband networks to provide services to all of Africa
on a cost effective basis.
This research work investigates the current business and technology domains and develops new
knowledge and the insights that are required firstly to understand why existing broadband services
are failing to reach rural Africa and secondly to understand what criteria must be satisfied to deliver
broadband access services to the mass consumer Africa market. The research work focuses on the
interrelationships between markets, technology and business of the consumer broadband market
and defines new thinking as reference to provide guidance to the future development of more
suitable broadband offerings for the rural African market.
The study centres around three principal areas of knowledge contribution.
Analysis of the primary factors impacting the delivery of broadband services
Firstly the study addresses the current market dynamics and technology realities to determine two
critical aspects: 1) Can the mass market afford broadband services or will it remain the privilege of
the higher income groups? And, 2) Can existing mobile broadband , ADSL and satellite access services
meet the demands to service the mass market or is an alternative technology option required?
Through analytical review the study determined that there is a large, and growing, middle class
market that can afford broadband access services. This market sector is quantified in terms of
consumer income levels and demographic user data. The study formulates the commercial and
service criteria applicable to a broadband access service on servicing this target market.
The study further investigates the availability, affordability and market penetration of the current
mobile and ADSL broadband services and found that the available service options cannot effectively
meet the current and future demand. The limitation in meeting the current market demand leads to
a large under serviced consumer market in Africa. The study proposes a unique approach to quantify
the specific under-serviced gap, which will not be met by currently available broadband technologies.
The technology comparative study provides new insight into the limitations of mobile 3G broadband
services and why this technology will not be able to meet the future demand for consumer
broadband services in Africa. The technology study furthermore quantifies the advantages of using
satellite technology to implement a mass consumer broadband service in Africa. The study proves
that the ubiquitous nature and rapid deployment capabilities of satellite access networks provides
distinct benefits when deploying a mass consumer network which makes satellite the technology of
choice for consumer broadband services. We then continue to assess the ability of existing satellite
broadband offerings to satisfy the needs of African end-users, and find that those offerings have
been optimized for the needs and affordability levels of customers from the develop world. The
result is that satellite broadband services aimed at the African end-user is primarily used by
corporate and institutional customers, with little penetration of the consumer market. This finding
provides the motivation for developing a business model that can leverage available technology to
effectively service the African consumer market.
Innovation of new concepts to support a viable broadband business strategy
The mobile prepay model as well as the DStv pay-TV subscription services have demonstrated the
need for a specific business innovation to ensure successful market adoption of new technologies.
Both these industries have demonstrated that innovative approaches in the commercialization of
technology solutions are critical to ensure the mass adoption thereof. The second section of the
study therefore focuses on the innovations that are required to overcome the obstacles as identified
in section 1 in order to arrive at a business strategy and business model that will prove to be viable in
the delivery of broadband services to the rural African consumer market.
The first challenge is the selection of the most appropriate technology platforms and the
architectural design of the delivery systems to effectively service the mass consumer market. In
order to adapt the business models employed by existing satellite broadband service providers the
study defines the following two specific business innovation concepts that contribute to a new
business paradigm for mass market broadband access services:
1) Through applied billing model innovation the study defines a new billing structure for
broadband services and set a completely new paradigm for users to influence the cost of the
service. The new billing model provides end-user the capability to adapt their broadband
usage patterns to meet their budget constraints.
2) To successfully deliver a technology service to an emerging market requires a very specific
organisational structure that effectively integrates knowledge, capability and funding while
minimizing risk and uncertainty. The study proposes a new symbiotic organisational structure
that elegantly combines capability and knowledge while minimizing funding requirements to
ensure the acceptable market development risk.
Development of a business model simulator for satellite broadband service delivery
The deployment of a new type of satellite broadband service to rural Africa on an experimental basis
is too expensive to be conducted for research purposes. A more practical approach that is also
widely used in other domains of engineering is to construct a simulated model of the system being
studied. The third knowledge contribution area of the study therefore focuses on constructing a
mathematical model of the expected behavior of a business operation that provides satellite based
broadband services to the African market. This simulator can be applied to quantitatively analyze
various existing or proposed new business strategies. The business model simulation integrates all
the business, market, technology and commercial relationships that impacts on the expected
behavior of such an operation and provides a quantified model of expected business behavior based
on the underlying dynamics of the satellite broadband industry.
The development and validation of the business model simulator represents a unique contribution to
this industry as no results of a similar model that represents the operations of a satellite broadband
access service provider has been published before. The model empowers Service Providers and
industry stakeholders to analyze different business strategies and to quantify the impact of various
business decisions. In general it can be stated that this research work adds knowledge and insight to
the field of applied business strategy as applicable to providing advanced technology-based services
for emerging markets.
The final outcome of this research study is the business model simulator. It integrates various market
and business elements as well as satellite network engineering practises into an integrated financial
cost modelling, business scenario planning and engineering network design tool. Through this
integration of known disciplines the study provides an additional extension to the field of satellite
business engineering. / PhD (Electronic Engineering), North-West University, Potchefstroom Campus, 2013
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