Power conditioners that contribute to smartgrid eeweb community. Voltage and current, but maybe not true power networked smart grid sensors. The impact on the network depends on the technology used 14, although in general, dg can impact positively or negatively on the power quality in the following aspects. As far as weak distribution systems are concerned this behavior leads to power quality. Photovoltaic cell as power quality conditioner for grid connected system mr. Distribution system planning in the smart grid era julio romero aguero 62 in my view benefits of the smart grid. Review of facts technologies and applications for power quality in smart grids with renewable energy systems. Upqc for power quality improvement in dg integrated smart grid. Nov 02, 2017 learn more at this feature is not available right now. Smart grid plan for the public utility commission of oregon. Power conditioner to improve power quality in microgrids based on renewable energy. The paper analyses the factors responsible for power quality problems in the wind energy conversion system connected to grid and proper control schemes for power quality improvement. For example, if every house in a neighborhood is running their air conditioning, voltage at the last house in the neighborhood circuit could be ator even below114 volts. A microgrid is a weak electrical grid which can be easily subject to disturbances.
Please, submit a pdf version of the abstract including a cover letter with. An adequate power quality guarantees the necessary compatibility between all equipments connected to grids. A classical uqpc is constituted by two power conditioners, connected in series and shunted with the power grid, and sharing a common dclink. The problems that may arise the power quality audit pqa, is a. Power quality is necessary for electrical systems to operate in their intended manner without any deterioration of performance. Analysis of power quality improvement in smart grids.
Power quality events could be categorized as follows. A power conditioner is a device intended to improve the quality of the power that is delivered to. The application of a unified power quality conditioner upqc to overcome the grid integration problems of the fsig is investigated. The study of power quality, and ways to control it, is a. An example was designed using etap software, starting from a real electric distribution system in order to build a general image of corresponding pq issues. With actual information on voltage, utilities can use smart grid technology to optimize the voltage for every customer they servesettings are based on actual customer voltages rather than engineering estimates, which enables a more efficient and accurate supply of power. One of the advancements envisioned in smart grid is power quality control.
Pdf upqc for power quality improvement in dg integrated smart. A new unified power quality conditioner for grid integration of pv system and power quality improvement feature distribution system prakash vodapalli department of eee, tallapadmavathi college of engineering, warangal dt. In addition to rerouting electricity, the smart grid would be able to fill in the gaps of these alternative energy power sources. Communication network architecture and design principles for. American reinvestment and recovery act smart grid investment grant idaho power companys ipc smart grid program represents the integration of three systems. Power quality control in smart distribution grids using power electronic converters. This subject is continuing to change with technology advancements in the smart utility grid and the further use of electronic equipment or smart devices in power distribution systems. Experimental evaluation of a control system based on a dual. Power quality control in smart distribution grids using power. This low voltage condition can cause problems with electric equipment in that house. Therefore, power quality pq issues with respect to smart grids become a major topic is explained.
Consequently, it is noted that the results are significant in the analysis of power quality in a smart grid scenario, as the smart meter offers low cost and high accuracy in both detecting an. A computer simulation derived study of photovoltaic cells modules, utilizing matlab, is demonstrated. Two different types of ev batteries chargers were considered. In a smart grid the role of a power quality conditioner is to. Analysis of the features of a upqc to improve power. The aim of smart grid is to make existing infrastructure more robust, reliable and efficient by using intelligent tools and technologies, encourage active demand side participation, enable better access to electricity, ensuring sustainability of supply through renewable. This paper discusses power and especially voltage quality issues in the smart grid. Power quality conditioner upqc in gridconnected micro grids is introduced in order to reduce harmonics in. The smart grid includes several components that help utilities better deliver quality power to your home. Smart grid topic 2 smart grid department of electrical. Output format is usually i2c or spi and thus requires. Power quality improvement of smart microgrids using ems. Due to the controllable feature of the load, various changes occur with respect to the voltage values and harmonics.
A study of the power quality constrained optimization of smart microgrids with nonlinear loads for. The components of the smart grid include renewable sources and controllable loads. A grid is a network that brings electricity from power stations to consumers. The first reason is the more active consumer participation in the power sector, and the other one is the introduction of renewables, having a great impact on voltage variation because its intermittency. Smart grid technologies utilize electrical metering and monitoring equipment. The main inverter which is associated with distribution generation dg and. Upqc unified power quality conditioner, active conditioners, power quality, smart grids, pq theory 1 introduction the effective research in the area of semiconductor technologies in recent decades allowed the refinement and development of faster power semiconductors with lower operating losses. In a smart grid scenario of operation, a upqc will be fundamental for compensating power quality problems, also contributing to improving the e ciency of the electrical grids from a global perspective. Electric power quality, or simply power quality, involves voltage, frequency, and waveform.
International transactions on electrical energy systems, 2017. Eaton s power conditioners provide exceptional system reliability through ultimate power protection against sags, surges, swells, spikes and electrical noise. Overview of power quality analysis and control technology for the smart grid an luo1, qianming xu1, fujun ma1, yandong chen1 abstract with the wide application of nonlinear loads and the largescale access of distributed energy generations. Some of the key factors of implementing a good platform and sound power quality plan include. Analysis of the upqc features to improve the smart grid. Power quality the quality of electrical power supply is a set of parameters which describe the process of electric power delivery to the user under normal operating conditions, determine the continuity of supply short and long supply interruption. Power quality the quality of electrical power supply is a set of parameters which describe the process of electric power delivery to the user under normal operating conditions, determine the continuity of supply short and long supply interruptions and characterize the supply voltage magnitude, asymmetry, frequency. A presentation on power quality conditioners submitted by. Gis helps you answer questions and solve problems related to smart grid implementation. The quality of electrical power supply is a set of parameters which describe the process of electric power delivery to the user under normal operating conditions, determine the continuity of supply short and long supply interruptions and characterize the supply voltage magnitude. The active power conditioner apc presented in this paper acts as an interface between renewable energy sources and the ac bus of.
Power quality has become the principal concern for the realization of a smart grid 3. Overview of power quality analysis and control technology. Nov 02, 2016 under the guidance of oe, inl works with industry, universities and government stakeholders to provide a testing environment which reduces the risks and enables real world validation and verification of new ideas, devices and systems including new smart grid devices, distribution automation, communication systems, renewable energy, and grid. In this paper, a power quality pq conditioner for microgrid is presented. This book highlights the new emerging challenges of power quality due to the penetration of largescale renewable energy generation technologies, the advances in nonlinear loads, the increased electricity demands in the deregulated market, and the recent requirements. Good power quality can be defined as a steady supply voltage that stays within the prescribed range, steady a. Aug 16, 2018 power quality,voltage sag,voltage swell,brownout,resonance,active filter. The matlab is an analoguedigital simulator which estimates voltage and current in a circuit under a.
Power qualty conditioners ac power electrical grid. These tools allow for twoway communication between utility companies and customers and enable data transference. It is observed that the bulk of consumption for office complexes at any point in time when there is adequate power supply without the use of smart grid comes from the air conditioners followed by. Power quality improvement in lv smart grid by using the. Upqc for power quality improvement in dg integrated smart. A general analysis was addressed, in order to identify the current stateofthe art of smart grid and harmonic filters and their influence on power quality. Smart grid capable kuhl is the first room air conditioner that can tie into a power companys smart grid. Smart meters are advanced electric meters that provide both you and your utility with more information about the power delivered to your home. Smart grid is efficient, reliable and intelligent two way electricity and information delivery system from source to sink. Unified power quality conditioner for improving power. How does the smart grid help improve power quality. To better isolate the device from their respective noises power quality conditioner is recommended between each micro.
The smart grid can be seen as an alternative energy source, certainly a change from the current way of doing things. As one of the major enabling technologies of smart grid, power electronics will play an important role in power quality control. Power quality requirements for the smart grid design. Smart grid applications the requirements of smart grid applications drive the design and architecture of an integrated smart grid communication network. A certified power quality instrument pqi, it resolves power quality issues faster with patented disturbance tracking technology, and provides unique modularity designed to adapt to your changing energy needs, now and far into the future. In the modern smart grid, the diversity of loads and the demands for highly ef. Explore power quality with free download of seminar report and ppt in pdf and doc format. Power quality conditioner upqc in gridconnected micro grids is introduced in order to reduce. In addition, information accumulated from bidirectional interactions on the grid enhances its design by improving reliability, flexibility and power quality.
It is considered the current consumed, according to a typical electric consumption profile, and the voltage degradation for a large number of houses. Simultaneous microgrid voltage and current harmonics compensation using. Review of facts technologies and applications for power. Overview of power quality analysis and control technology for the smart grid an luo1, qianming xu1, fujun ma1, yandong chen1 abstract with the wide application of nonlinear loads and the largescale access of distributed energy generations based on power electronics equipments, power quality problems in the distribution network are increasingly. Smart grid a smart grid is an electricity network that can intelligently integrate the behavior and actions of all users connected to it generators, consumers and those that do both in order to. Power quality conditioner for microgrid ieee conference publication. New technologies allow power companies to adjust electrical loads of residential users based on their specific needs this is called a smart grid. Impact of electric vehicles on power quality in a smart. Power quality control in smart distribution grids using. Pdf on apr 1, 2010, math bollen and others published power quality aspects of smart grids find. Power quality, or more specifically, a power quality disturbance, is generally defined as any change in power voltage, current, or frequency that interferes with the normal operation of electrical equipment. The wind driven, fixedspeed induction generator fsig on its own fails to fulfil these requirements of grid integration.
Grid codes force distributed generators to take responsibility for maintaining power quality and availability of the grid. The introduction of variable renewables, responsive loads, storage and localized control into todays electrical grid requires conversion of electric power from one form to another ac tofrom dc andor conversion between different voltage levels, and requires conditioning the power quality needed by the subsystems being integrated. Unified power quality conditioner upqc the unified power quality conditioner upqc combines the shunt active power filter with the series active power filter, sharing the same dc link, in order to compensate both voltages and currents, so that the load voltages become sinusoidal and at nominal value. Utility operators will need gis to make the best decisions about key issues such as collecting data, managing smart meter and sensor installation, analyzing customer behavior, and incorporating renewable energy. Electric power quality an overview sciencedirect topics. Typical pq disturbances impact on power equipmentstandards instrumentation economic impact smart. Smart meters are advanced electric meters that provide both you and. Smart grid, its power quality and electromagnetic compatibility.
Renewable energy resources such as wind and solar pv behave intermittently. To establish standards and measurement methods, and test for smart grid and microgrid power conditioning systems needed to transition from todays low penetration of nondispatchable intermittent renewable energy sources to flexible grid operations that can actively adjust to varying grid conditions. For example, modern electrical networks can link wind and solar power with electric cars. This paper presented an extensive handy survey on renewable energy and its integration techniques with the smart power. The grid connection of dg is performed basically with three technologies. Hamed mohsenianrad communications and control in smart grid texas tech university 8 according to the u.
A micro grid is a weak electrical grid which can be easily subject to disturbances. Power quality has become the term used to describe a wide range of electrical power origin, monitoring and measurement. This operational capability also helps to protect the grid s power quality on holidays and other occasions when excess power is widely generated. A consequence of smart grid is a drastic increase in. Power quality is also a complex subject requiring specific terminology in order to properly describe situations and issues. Smart grid is increasingly seen as a means to facilitate climate friendly renewable energy sources renewables and to enable efficient use of electricity.
The quality of electrical power supply is a set of parameters which describe the process of electric power delivery to the user under normal operating conditions, determine the continuity of supply short and long supply interruptions and characterize the supply voltage magnitude, asymmetry. Pdf power quality aspects of smart grids researchgate. Analysis of the features of a upqc to improve power quality. Abstractthis paper presents a threephase three leg active power conditioner to improve power quality in micro grids based on renewable energy. Traditional applications teleprotection and supervisory control and data acquisition scada applications have been employed for power grid management. The research topic has been developed within the paradigm of the smart grid, and it is centred on the evs potential of establishing mutual ben efits to both the electric power system with res and. Power quality and emc in smart grid ieee conference.
Application of unified power quality conditioner in grid. Power quality conditioners a power conditioner also known as a line conditioner or power line conditioner is a device intended to improve the quality of power that is delivered to electrical load equipment. The micro grids and the utility grid expose to their inner disturbance such as harmonics, unbalances and other power quality noises. Power quality conditioners dvrs, coordinated tap changers. Power quality smart grid markets youll find our products and components in a wide array of applications and industries across the globe, on land, on water, and in the air. Voltage sag or voltage dip is the most disturbing power quality pq issue in. Power quality problems harmonics, resonances, flickers, etc. Reinventing the electric power system a 2012 reprint journal from pes. Special issue on power quality in smart grids ieee pes. Power quality improvement in microgrid using active power. Power quality and smart grid eddy so institute for national measurement standards national research council canada simposio metrologia queretaro, mexico october 29, 2010 slide 2 outline power quality. With precision twice that of existing energy standards, the ion9000 redefines the standard for accuracy. This article presents the high performance microcontrollers that helps the advancement of power conditioners that contribute to smart grid energy savings and storage. The acceptability of deviations from specified power ratings depends on the kind of use, the systems installed and their requirements.
Smart power grids are increasingly being recognized as a secure means. Part of a longterm economic strategy bruce hamilton smart grid. Smart grid, power quality, power system, harmonics, voltage quality, electromagnetic compatibility. The problem arising out of the wind turbine when connected to a grid system concerning the power quality measurements are active power, reactive power, voltage sag, voltage swell, flicker, harmonics, and electrical behaviour of switching operation. Upqc unified power quality conditioner, active conditioners, power quality, smart grids, pq theory 1 introduction the effective research in the area of semiconductor technologies in recent decades allowed the refinement and development of faster power. Smart grid generally refers to a class of technologies that people are using to bring utility electricity delivery systems into the 21st century, using computerbased remote control and automation. Power quality seminar report, ppt, pdf for electrical. Power conditioning systems for renewables, storage, and. Discover schneider electric range of products in power quality improvement. Overview of power quality analysis and control technology for. When smart communities are built, improved power conditioners will play important roles in the infrastructures of those communities.
Metering and power quality sensors sensors for smart buildings. Smart grid and power quality management ieee smart grid. Power quality improvement in microgrid using active power conditioner s. Unified power quality conditioner for improving power quality using ten switch inverter 1 s. Solarpower generators use power conditioners see block diagram in figure 1 to convert the dc power they produce to the ac power distributed to businesses and consumers via the grid. Pdf overview of power quality analysis and control. Power conditioners that contribute to smartgrid eeweb. An overview of smart power grid energy and power for all. The seven types of power problems schneider electric.
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