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INTELLIGENT SCADA FOR LOAD CONTROL
Get PDFThis paper presents the use of intelligent system with Supervisory control and data acquisition system (SCADA) Software and hardware components platform like PLC considered as the main contents of this project. SCADA software enables us to monitor, record data whenever required from the hardware installed and gives the status of the main power system components like motors, relays, panels, feeders, furnaces, etc. Feature of the design intends load control, distribution and history readings. A small hardware model shows the conveyer application which interface with SCADA and PLC. The application implemented on ladder logic simulation with KGL_WE simulator and SCADA helps to shows real time information about the system
REAL TIME PRICING BASED POWER SCHEDULING FOR DOMESTIC LOAD IN SMART GRID
Get PDFThe concept of shaping domestic and commercial loads can be an effective way of controlling the load profile of a distribution company. Flat energy rates don’t provide incentives to customers to use power as would be optimal from a utility point of view. Price of energy should be fluctuating according to peak or off peak load condition. Smart meters can offer solution to this by allowing sophisticated measurement of consumption and using real time pricing (RTP) signals sent by utility. The consumer can minimize their expenses on energy by adjusting their intelligent appliances operation. Home Energy Controllers (HEC) control appliances at domestic and commercial consumer’s premises to save energy, reduce cost, increase reliability, efficiency and transparency. In this paper different automated meter reading (AMR) technologies and architecture of smart meter are discussed. Appliance scheduling approach is realized here with help of MATLAB simulation to keep the peak power demand for the homes below target value and reduce the cost of energ
ENERGY CONSERVATION THROUGH ENERGY EFFICIENT TECHNOLOGIES AT THERMAL POWER PLANT
Get PDFEnergy audit and conservation is the burning issue nowadays due to the tremendous scarcity of electricity across the county. It is specifically quantifies as optimum use of electricity available. Normally it is extended to all the sectors viz, Industrial, commercial, residential as well as agriculture. Energy efficiency is a technique which needs to be adopted seriously and religiously for effective energy conservation. Energy saved by efficient use of energy of any electrically operated device not only leads to monetary saving but is extra energy generated for the use elsewhere. Indian power sector is caught between the pressure of adding new generating capacities to match the rapid growing demand of power to achieve economic and social development and the environmental challenges which is why our per capita power consumption is still 778 KWh only. Therefore by implementing Energy conservation in thermal power plant we try to recover the losses which go waste. By energy management, one can draw a line between the avoidable and un-avoidable losses and plan to minimize the same. So measurement Energy is a must within a plant. This paper describes basic understanding and awareness about energy conservation around the thermal power plant and also explains the energy saving measures at thermal power plant so as to minimize the auxiliary power consumption
MINIATURE IMPROVED CARRY SELECT ADDER WITH ADVANCE FEATURES AND POWER REQUIREMENTS
Get PDFIn most of the data processing processors to perform arithmetic functions Carry Select Adder (CSLA) is used as this is one of the fastest adders. In order to increase the overall efficiency of the processor we can reduce the area and power consumption of the CSLA of processors. Based on this premise we can modify the regular SQRT CSLA architecture as 8-, 16-, 32-, and 64-b square-root CSLA (SQRT CSLA) architecture. The proposed design has reduced area and power as compared with the regular SQRT CSLA with only a slight increase in the delay. This work evaluates the performance of the proposed designs in terms of delay, area, power. The results analysis shows that the proposed CSLA structure is better than the regular SQRT CSLA
IMPACT OF STATIC VAR COMPENSATORS ON POWER SYSTEM: A CASE STUDY
Get PDFWith increase in load, any transmission, distribution and generating model suffers from disturbances. These disturbances effect the overall stability of the system. Criterias like voltage profile, power flows, losses tell us about the state of the system under study. Load flow analysis of the system under study is capable of providing the insight of the system. The Emergence of FACTS device is really a step forward for the flexible control or Power System Operations. FACTS is the name given to the application of the power electronics devices to control power flows and other quantities in the power system. But when it comes to implementation stage, optimizing the location becomes a great concern because of the high cost involved with FACTS devices especially converter like SVC, STATCOM etc. Static Var Compensator (SVC) is a power quality device, which employs power electronics to control the reactive power flow of the system where it is connected. It is able to provide fast-acting reactive power compensation on electrical systems. SVC is one of the methods and can be applied to obtain a system with least losses, increased power flow and healthy voltage profile. Number, location and size of SVC are the main concerns and they can be optimized to a great extent by Genetic Algorithm (GA) or any other method. Use of SVC in a system has shown considerable increase in voltage profile and power flows while decrease in losses
LOSS REDUCTION IN RDS USING DG BY ENHANCED LOSS INDEX FACTORS
Get PDFDistributed generation (DG) units reduce electric power losses and hence improve reliability and voltage profile. Determination of appropriate size and location of DG is important to maximize overall system efficiency. In this paper, loss index factor method has been presented to determine the appropriate size and proper allocation of DG in a distribution network. Results obtained from this method have been compared with using the repeated load flow method
TOTAL HARMONIC DISTORTION REDUCTION BY USING SSSC WITH AND WITHOUT BVSI
Get PDFThis electronic document is a “live” template. The various In present a new Static Synchronous Series Compensator (SSSC) for the control of active power flow on a transmission line is proposed and its effectiveness is investigated. The new SSSC is based on injecting a voltage in a given line to counter or augment the voltage &Power produced by the inductive reactance of the line. The resulting compensator, therefore, emulates the control of transmission line reactance and thus, it assists in control by the power transmission capacity. The voltage to be injected in a line is produced by a Binary Voltage Source Inverter (BVSI). BVSI is an attractive recently proposed Voltage Source Inverter. Its output contains very little harmonics and it utilizes very few dc sources unlike conventional multi-level VSIs. The % phase output of the BVSI is synchronized to the line frequency and its phase is arranged to be in or out of phase with the Line reactance drop. The proposed BVSI-SSSC is realized by using three binary proportioned dc sources, which may be appropriately dimensioned capacitors. The resulting output of a BVSI-SSSC is a 15-step ac voltage waveform. The BVSI- SSSC has a sophisticated set of coordinated controlled which ensure: BVSI frequency is in synchronism with the system frequency, firing pulses are regulated for inverter valves to ensure minimum harmonic content, the selection of Modulation Index and arrangement regulates an appropriate phase relationship to create the desired change in the power flow, and adjustment of firing angles to ensure that the capacitors creating dc binary proportioned sources maintain desired charge on them. Armillary controls may be added to create positive system damping through active power control, and voltage dependent controllers may be added to limit over and under voltage (charging) of capacitors during fault conditions
COMPLETED LBP BASED TEXTURE ANALYSIS IN MAMMOGRAM
Get PDFBreast cancer is a frequent cancer diseases and it is the leading cause of cancer death among women in most of the occidental countries. Mammography is one among the key tool to identify the location and size of tumor in the breast. Texture analysis plays an important role in detecting the disease patterns in mammogram and to identify the masses as normal or abnormal. The local binary pattern descriptor provides an illumination invariant and rotation invariant approach for the texture analysis. However the LBP consider only the sign parameters. So it may lose some textural information. This can be overcome by considering the sign, magnitude and centre gray level values. Here a new approach for the Texture analysis in mammogram using completed LBP is presented. Although different methods have been proposed most of them suffer from large number of false positives. In contrast this method uses textural properties to reduce the number of false positives
PREEMPTIVE PRIORITY SCHEDULING WITH AGING TECHNIQUE FOR EFFECTIVE DISASTER MANAGEMENT IN CLOUD
Get PDFCloud computing has intern the attention of today’s leading IT industries offering huge potential for more flexible, readily scalable and cost effective IT operation. There is a significant anticipation for emergent innovation and expanded capabilities of a cloud-based environment as the cloud services are still in the infant stage. With all technology innovation, the biggest gain will be realized when the Cloud services are efficiently utilized. One of the prime contributions of Cloud is its capacity to handle a huge amount of data for either processing or storing. The inadequacy of this model is that it is prone to disaster. Some of the popular scheduling techniques applied by the researchers and leading IT industries are Round Robin, Preemptive scheduling etc. This research focuses on a novel approach for disaster management through efficient scheduling mechanism.This paper presents a Priority Preemptive scheduling (PPS) with aging of the low priority jobs in Cloud for disaster management. The implementation results show that the jobs at any instance of time are provided with the resources and henceforth preventing them to enter the starvation, which is one of the prime causes for disaster
SIMULINK/MODELSIM CO-SIMULATION AND FPGA REALIZATION OF SPWM CONTROLLER FOR THREE PHASE MULTILEVEL INVERTER
Get PDFIn this project a design of application-based adaptable level three-phase diode clamped multilevel voltage source inverter is proposed. The inverter is designed in a fussy manner, that different levels of the inverter can be designed and simulated in a single circuit. Using select input he level switching of inverter is done. A Mat lab/Simulink model of the proposed design is modeled and simulated, with the gating signals generated using FPGA. A Phase opposition disposition sinusoidal PWM (PODSPWM) algorithm is used for generation of gating signals. The harmonic analysis of the output voltage waveform for each levels of inverter is done separately and using proposed model, verified the result. A comparison of total harmonic distortion of different levels of inverter is done. The t o t a l harmonic distortion is very low for higher level inverter. The FPGA implementation of gating signals for the proposed model is done using Xilinx Spartan 3 XCS400PQ208