Pdf upqc for power quality improvement in dg integrated smart. 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. Explore power quality with free download of seminar report and ppt in pdf and doc format. In the modern smart grid, the diversity of loads and the demands for highly ef. Power quality requirements for the smart grid design.
Please, submit a pdf version of the abstract including a cover letter with. A microgrid is a weak electrical grid which can be easily subject to disturbances. Simultaneous microgrid voltage and current harmonics compensation using. Power quality conditioner for microgrid ieee conference publication.
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. Power conditioning systems for renewables, storage, and. As one of the major enabling technologies of smart grid, power electronics will play an important role in power quality control. Nov 02, 2017 learn more at this feature is not available right now. Smart grid, its power quality and electromagnetic compatibility. In a smart grid the role of a power quality conditioner is to. Electric power quality an overview sciencedirect topics. Traditional applications teleprotection and supervisory control and data acquisition scada applications have been employed for power grid management.
Power conditioners that contribute to smartgrid eeweb community. Power quality conditioner upqc in gridconnected micro grids is introduced in order to reduce harmonics in. With precision twice that of existing energy standards, the ion9000 redefines the standard for accuracy. The smart grid includes several components that help utilities better deliver quality power to your home. The micro grids and the utility grid expose to their inner disturbance such as harmonics, unbalances and other power quality noises. Some of the key factors of implementing a good platform and sound power quality plan include.
As far as weak distribution systems are concerned this behavior leads to power quality. Experimental evaluation of a control system based on a dual. Smart grid capable kuhl is the first room air conditioner that can tie into a power companys smart grid. Power quality control in smart distribution grids using power. 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. Power quality has become the principal concern for the realization of a smart grid 3. The grid connection of dg is performed basically with three technologies. 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. 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. American reinvestment and recovery act smart grid investment grant idaho power companys ipc smart grid program represents the integration of three systems. Hamed mohsenianrad communications and control in smart grid texas tech university 8 according to the u. 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. Upqc for power quality improvement in dg integrated smart grid. 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.
International transactions on electrical energy systems, 2017. 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. New technologies allow power companies to adjust electrical loads of residential users based on their specific needs this is called a smart grid. Electric power quality, or simply power quality, involves voltage, frequency, and waveform. Review of facts technologies and applications for power. In this paper, a power quality pq conditioner for microgrid is presented.
The problems that may arise the power quality audit pqa, is a. Due to the controllable feature of the load, various changes occur with respect to the voltage values and harmonics. Discover schneider electric range of products in power quality improvement. 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. 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. Power quality is also a complex subject requiring specific terminology in order to properly describe situations and issues. Smart grid technologies utilize electrical metering and monitoring equipment. This low voltage condition can cause problems with electric equipment in that house. Analysis of the features of a upqc to improve power. In addition, information accumulated from bidirectional interactions on the grid enhances its design by improving reliability, flexibility and power quality. 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.
Power qualty conditioners ac power electrical grid. The matlab is an analoguedigital simulator which estimates voltage and current in a circuit under a. 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. Power quality improvement of smart microgrids using ems. 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. Smart grid applications the requirements of smart grid applications drive the design and architecture of an integrated smart grid communication network. Distribution system planning in the smart grid era julio romero aguero 62 in my view benefits of the smart grid. Power quality is necessary for electrical systems to operate in their intended manner without any deterioration of performance. Power quality problems harmonics, resonances, flickers, etc. 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.
This paper discusses power and especially voltage quality issues in the smart grid. Special issue on power quality in smart grids ieee pes. The power conditioners correct voltage sags while maintaining uptime and productivity. Overview of power quality analysis and control technology for. The study of power quality, and ways to control it, is a. 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. Pdf overview of power quality analysis and control. Analysis of the upqc features to improve the smart grid. Smart grid topic 2 smart grid department of electrical. A study of the power quality constrained optimization of smart microgrids with nonlinear loads for. Grid codes force distributed generators to take responsibility for maintaining power quality and availability of the grid. The active power conditioner apc presented in this paper acts as an interface between renewable energy sources and the ac bus of. A presentation on power quality conditioners submitted by. Renewable energy resources such as wind and solar pv behave intermittently.
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. The components of the smart grid include renewable sources and controllable loads. How does the smart grid help improve power quality. Output format is usually i2c or spi and thus requires. 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. 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.
One of the advancements envisioned in smart grid is power quality control. A computer simulation derived study of photovoltaic cells modules, utilizing matlab, is demonstrated. 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. Power quality improvement in microgrid using active power. Communication network architecture and design principles for. Abstractthis paper presents a threephase three leg active power conditioner to improve power quality in micro grids based on renewable energy.
A power conditioner is a device intended to improve the quality of the power that is delivered to. 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. Therefore, power quality pq issues with respect to smart grids become a major topic is explained. Power conditioner to improve power quality in microgrids based on renewable energy. It is considered the current consumed, according to a typical electric consumption profile, and the voltage degradation for a large number of houses.
Review of facts technologies and applications for power quality in smart grids with renewable energy systems. Eaton s power conditioners provide exceptional system reliability through ultimate power protection against sags, surges, swells, spikes and electrical noise. 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. Finally, the coordinated control of harmonics and unbalances in micro grids is. Power quality events could be categorized as follows. Power quality conditioners dvrs, coordinated tap changers. To better isolate the device from their respective noises power quality conditioner is recommended between each micro. Upqc for power quality improvement in dg integrated smart. Pdf power quality aspects of smart grids researchgate. 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.
An adequate power quality guarantees the necessary compatibility between all equipments connected to grids. 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. The application of a unified power quality conditioner upqc to overcome the grid integration problems of the fsig is investigated. A classical uqpc is constituted by two power conditioners, connected in series and shunted with the power grid, and sharing a common dclink.
Voltage sag or voltage dip is the most disturbing power quality pq issue in. Voltage and current, but maybe not true power networked smart grid sensors. In addition to rerouting electricity, the smart grid would be able to fill in the gaps of these alternative energy power sources. Power conditioners that contribute to smartgrid eeweb.
The wind driven, fixedspeed induction generator fsig on its own fails to fulfil these requirements of grid integration. Overview of power quality analysis and control technology. Two different types of ev batteries chargers were considered. Smart meters are advanced electric meters that provide both you and your utility with more information about the power delivered to your home. The smart grid can be seen as an alternative energy source, certainly a change from the current way of doing things. 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.
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. 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. Pdf on apr 1, 2010, math bollen and others published power quality aspects of smart grids find. Impact of electric vehicles on power quality in a smart. This paper presented an extensive handy survey on renewable energy and its integration techniques with the smart power.
Smart grid is increasingly seen as a means to facilitate climate friendly renewable energy sources renewables and to enable efficient use of electricity. 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. Smart grid and power quality management ieee smart grid. Power quality conditioner upqc in gridconnected micro grids is introduced in order to reduce.
Smart grid is efficient, reliable and intelligent two way electricity and information delivery system from source to sink. Power quality control in smart distribution grids using. A grid is a network that brings electricity from power stations to consumers. Power quality seminar report, ppt, pdf for electrical. A micro grid is a weak electrical grid which can be easily subject to disturbances. 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. Gis helps you answer questions and solve problems related to smart grid implementation. 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. Unified power quality conditioner for improving power. A consequence of smart grid is a drastic increase in. Enhancing power quality in electrical distribution systems. 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. Photovoltaic cell as power quality conditioner for grid connected system mr. Power quality has become the term used to describe a wide range of electrical power origin, monitoring and measurement.
These tools allow for twoway communication between utility companies and customers and enable data transference. Aug 16, 2018 power quality,voltage sag,voltage swell,brownout,resonance,active filter. Reinventing the electric power system a 2012 reprint journal from pes. This operational capability also helps to protect the grid s power quality on holidays and other occasions when excess power is widely generated. Smart power grids are increasingly being recognized as a secure means. An overview of smart power grid energy and power for all.
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. Typical pq disturbances impact on power equipmentstandards instrumentation economic impact smart. Part of a longterm economic strategy bruce hamilton smart grid. 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. Application of unified power quality conditioner in grid. Power quality improvement in microgrid using active power conditioner s. 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. 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. The seven types of power problems schneider electric. Velumani 1 pg scholar, 2assistant professor, 3 pg scholar 1 department of electrical and electronics engineering, 1 sona college of technology, salem, tamilnadu, india. Metering and power quality sensors sensors for smart buildings. Smart grid plan for the public utility commission of oregon.
The main inverter which is associated with distribution generation dg and. Good power quality can be defined as a steady supply voltage that stays within the prescribed range, steady a. For example, modern electrical networks can link wind and solar power with electric cars. Power quality and emc in smart grid ieee conference. When smart communities are built, improved power conditioners will play important roles in the infrastructures of those communities. The acceptability of deviations from specified power ratings depends on the kind of use, the systems installed and their requirements. 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. 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. Smart meters are advanced electric meters that provide both you and. Smart grid, power quality, power system, harmonics, voltage quality, electromagnetic compatibility. This article presents the high performance microcontrollers that helps the advancement of power conditioners that contribute to smart grid energy savings and storage. 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.