The primary objective of this work is to develop and demonstrate a steady-state stochastic simulation method to estimate the PV hosting capacity of a given distribution, based on the ANSI voltage regulation standard. The work discusses the key factors that determine the voltage rise due to distributed PV. Load demand analysis is done to determine statistically representative minimum daylight load demand for PV analysis. And lastly, the steady-state, stochastic simulation method is discussed and implemented to estimate the PV hosting capacity for small-scale and large-scale PV Deployments. / text

The main point of this work is to describe complex solution of web-hosting server based on free software. This should provide main services such a post or www server. The work describes instalation of Unix(GNU/Linux) operating system. In addition are described individual services, evolved conrete implementations and also is spoken their installation and configuration. Though this text describe implementation of concrete application, some part of thist text contains generally information about installation, configuration and securing of linux servers.

This study aims to examine the hosting capacity (the maximum amount of distributed generation possible to add to a current grid) of Mälarenergi’s distribution networks. The three areas examined are a rural network, a modern suburban grid and an older suburban grid. The networks are modelled in PowerWorld Simulator with data mainly from Mälarenergi’s NIS (Network Information System). The basic models include calculated minimum loads based on load profiles, combined with 0 kW, 2 kW, 4kW or 5 kW installed photovoltaics (PV) systems at each consumer. The compensating models are based on the previous ones but with reduced transformer voltages to lower the risk of grid over-voltages. A high load case is also examined to make sure there are no under-voltages for these models. The results show that the rural network is strong enough to handle the biggest available PV system at 5 kW, if the transformer voltage is lowered from 1.03 p.u. to 1.005 p.u. The modern suburban grid can host 4 kW solar panels together with a lowered voltage level of 1.005 p.u. The larger package of 5 kW leads to overloading at the transformer when used. The older suburban grid has the largest issues with both overvoltages and overloading and can only handle 2 kW distributed generation with a voltage reduction to 1.005 p.u. The models are fairly sensitive because of assumed transfomer parameters and, in the case of the modern suburban grid, some lines being removed due to limitations in the software. Regardless, the results are robust enough that they can be considered correct.

The study examines the potential for extensive connection of photovoltaic (PV) production in the Swedish rural power grid, considering the case distribution grid (10kV) of Herrljunga Elektriska. Hourly PV production is calculated using radiation and temperature data together with information regarding building roofs in the studied area. Furthermore, hourly customer load data is aggregated, enabling detailed power flow simulations of the grid resulting in hourly voltages and currents for all nodes during 2014. Three cases with varying PV production are studied, using different thresholds for minimum annual radiation. Thus, roofs with lower annual radiation are excluded from the simulations, limiting PV production. The three cases considers annual radiation greater than 0 kWh/m2 , 700 kWh/m2 and 1000 kWh/m2. Simulations show that the distribution grid in Herrljunga maintains acceptable performance with respect to voltages and currents for the 1000 kWh/m2,year case, yielding an annual production of 30 % of consumption. The hosting capacity, which is an estimate of the amount of PV that can be connected to the grid, is therefore 30 %. In order to further examine grid limitations, weak parts of the grid are identified. These are situated in the peripheral parts of the grid, which is in accordance with earlier studies of intermittent power production in distribution grids. Additionally, low voltage grids in connection to these weaker parts of the distribution grid are simulated, showing no further limitations for hosting capacity.

No description available.

Thesis (M.A.)--Miami University, Dept. of Geography, 2006. / Title from first page of PDF document. Includes bibliographical references (p. 92-102).

Recent technological developments have led to significant changes in the power grid. Increasing consumption, widespread adoption of Distributed Energy Resources (DER), installation of smart meters, these are some of the many factors that characterize the changing distribution network. These transformations taking place at the edge of the grid call for improved planning and operation practices. In this context, this thesis aims to improve the grid edge functionality by putting forth a method to address the problem of high demand during peak period by identifying customer groups for participation in demand response programs, which can lead to significant peak shaving for the utility. A possible demand response strategy for peak shaving makes use of Photovoltaic (PV) and Battery energy storage system (BESS). In the process, this work also examines the approach to computation of hosting capacity (HC) for small PV and quantifies the difference obtained in HC when a detailed Low voltage (LV) network is available and included in HC studies. Most PV hosting studies assess the impact on system feeders with aggregated LV loads. However, as more residential customers adopt rooftop solar, the need to include secondary network models in the analysis is studied by performing a comparative study of hosting capacity for a feeder with varying loading information available. / Master of Science / Today, with significant technological advancements, as we proceed towards a modern grid, a mere change in physical infrastructure will not be enough. With the changes in kinds of equipment installed on the grid, a wave of transformation has also begun to flow in the planning and operation practices for a smarter grid. Today, the edge of the grid where the customer is interfaced to the power system has become extremely complex. Customers can use rooftop solar PV to generate their own electricity, they are more informed about their consumption behavior due to installation of smart meters and also have options to integrate other technology like battery energy storage system and electric vehicles. Like with any good technology, adoption of these advancements in the system brings with itself a greater need for reform in operation and planning of the system. For instance, increasing installation of rooftop solar at the customer end calls for review of existing methods that determine the maximum level of PV deployment possible in the network without violating the operating conditions. So, in this work, a comparative study is done to review the PV hosting capacity of a network with varying levels of information available. And the importance of utilities to have secondary network models available is emphasized. With PV deployed in the system, enhanced demand response strategies can be formulated by utilities to tackle high demand during peak period. In a bid to identify customers for participation in such programs, in this work, a computationally efficient strategy is developed to identify customers with high demand during peak period, who can be incentivized to participate in demand response programs. With this, a significant peak shaving can be achieved by the utility, and in turn stress on the distribution network is reduced during peak hours.

No description available.

Este trabalho relata a experiência de avaliação do processo de acolhimento em saúde mental na cidade de São Paulo-SP. Baseou-se em entrevistas com os trabalhadores do CAPS adulto e de duas UBS uma com equipe de saúde mental e outra sem essa equipe. O objetivo foi entender o estabelecimento do acolhimento nestes serviços, considerando a percepção dos trabalhadores e identificando o vínculo e a articulação da rede neste processo. Utilizou-se como abordagem metodológica a hermenêutica filosófica gadameriana, para identificar que elementos participantes do processo de acolhimento poderiam ser destacados a partir da pergunta primaz: como é o serviço de saúde mental? Procedeu-se à análise das narrativas e a partir delas se estabeleceu três linhas de argumentação: vínculo, acolhimento, e articulação da rede. Os resultados surgiram em forma de quatro categorias: sensação de ausência; mistura de modelos; primazia em tecnologias duras; e ineficiência quanto à integralidade. Estes achados foram confrontados com outro serviço de saúde: o PSF; e apenas a categoria ausência não pode ser conferida / This paper reports the evaluation experience of hosting process in mental health care in São Paulo-SP. Based on interviews with workers in the adult CAPS and two UBS - with a mental health team and one without this team. The goal was to understand the establishment of hosting into these services, considering the perception of employees and identifying the link and network connection in this process. Was used as a methodological approach to philosophical hermeneutics of Gadamer, to identify which inner elements of the hosting process could be detached from the primate question: how is the mental health service? Proceeded to the analysis of narratives from them and were established three lines of argumentation: link, hosting, and the network connection. The results came in the form of four categories: feeling of lack, mix of models; precedence in hard technologies, and inefficient as to integrality. These findings were compared with other health service: the PSF, and only the category lack could not be checked

Hui, Pik Hung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2009. / Includes bibliographical references (leaves 23-27). / Abstract also in Chinese. / ABSTRACT --- p.I / 摘要 --- p.II / ACKNOWLEDGMENT --- p.Ill / TABLE OF CONTENTS --- p.IV / LIST OF FIGURES AND TABLES --- p.V / Chapter 1. --- INTRODUCTION --- p.1 / Chapter 2. --- THE INSTITUTIONAL BACKGROUND --- p.4 / Chapter 2.1 . --- EVOLVEMENT OF MODERN SUMMER OLYMPIC GAMES --- p.4 / Chapter 2.2. --- THE OLYMPIC MOVEMENT AND ORGANIZATION STRUCTURE --- p.5 / Chapter 2.3. --- BIDDING FOR THE GAMES --- p.7 / Chapter 2.4. --- FINANCING THE OLYMPIC GAMES --- p.8 / Chapter 3. --- WILL OLYMPICS GENERATE ECONOMIC GROWTH? --- p.10 / Chapter 3.1. --- DATA AND MODEL --- p.10 / Chapter 3.2. --- ESTIMATION RESULTS --- p.13 / Chapter 3.3. --- MODEL EXTENSION --- p.16 / Chapter 4. --- HOW TO WIN THE OLYMPICS --- p.18 / Chapter 4.1. --- MODEL AND DATA --- p.19 / Chapter 4.2. --- ESTIMATION RESULTS --- p.20 / Chapter 5. --- CONCLUSION --- p.21 / Chapter 6. --- REFERENCES --- p.23 / Chapter 7. --- APPENDIX --- p.55