Preeti Kabra
@deccancollege ac in
Assistant Professor / Electrical & Electronics Engineering
Deccan College of Engineering & Technology
Mrs. Preeti Kabra received B.E. degree in Electrical, Electronics and Power from Government college of Engineering, Aurangabad (MH) in 2000 and MTech degree from Jawaharlal Nehru Technical University, Hyderabad (TS). Currently working as Assistant Professor in Deccan College of Engineering & Technology, Hyderabad and Research scholar of KLEF, Vijaywada (AP). Main area of interest is Power system Automation, smart grid, WAMS, Synchrophasor Technology etc.
EDUCATION
BE, Mtech (PhD)
RESEARCH, TEACHING, or OTHER INTERESTS
Engineering, Electrical and Electronic Engineering, Energy Engineering and Power Technology
Scopus Publications
Scholar Citations
Scholar h-index
Scopus Publications
Preeti Nitin Kabra, Suraparaju Venkata Naga Lakshmi Lalitha, and Sudha Rani Donepudi
Institute of Advanced Engineering and Science
<span lang="EN-US">Analysis of bad data in an IEEE 14 bus system with <a name="_Hlk121211016"></a>phasor measuring units (PMU) devices is carried out in this paper. The normal operating condition data achieved from the PMU in the bus system is compared to the data achieved during faults in the bus system. A principal component analysis (PCA) technique is proposed in this paper for distinguishing the difference between data transmission during normal and fault conditions. The PCA approach detects the dynamical magnitudes of the measurements taken and also determines the noise caused by the disturbances. The grid system is updated with unified power quality conditioner (UPQC) improvising the parameters of the system to mitigate the fault. The PMU devices use PCA technique for a comparative analysis of the measured components analyzing the performance of the system under different operating conditions. The simulation of these modules is carried out in Simulink environment of MATLAB software with PCA done concerning time.</span>
Preeti Kabra and D. Sudha Rani
Inderscience Publishers
Kabra Preeti and Donepudi Sudha Rani
Emerald
Purpose The earlier methods are more resilient to improvements such as load shift and path change. This results in problems such as a voltage drop and a high reactive flux. In addition, due to the delay, congestion or interruption of the transmission, the system cannot receive all phasor measurement unit (PMU) measurements at the relevant time as well as the presence of noise in the received data. Design/methodology/approach With the development of wide area measurement system technologies, it seems to be possible to track voltage stability online via time-stamped PMUs. As the voltage instability causes a voltage decomposition, voltage instability is one of the most important problems when monitoring the power supply. Findings This harmonic distortion significantly decreases the data quality in the grid. As a result, instability ascertainment based on PMU has been suggested as a method for detecting voltage instability in power systems monitored with PMU. In addition, a technique called instability amendment via load dropping has been proposed to keep the device from collapsing due to voltage failure. Originality/value To improve the power output, the power prominence melioration technique was developed. This proposed system has been implemented in MATLAB Simulink and compared with the recent researches.
Preeti Nitin Kabra and Sudha Rani Donepudi
Institute of Advanced Engineering and Science
The traditional static synchronous compensator (STATCOM) present in the power grid to compensate instability problem will not be not able to maintain stability of the system due to fluctuations in point of common coupling (PCC) voltage and frequency variation that may result in poor synchronization of the grid. The solution for this is the improvement in conventional STATCOM to virtual synchronous machine–static synchronous compensator (VSM-STATCOM). In this paper an interconnected IEEE-14 bus system is considered for analysis with VSM-STATCOM for improvement in voltage profile on weakest bus of the system. In order to find the weakest bus, load flow analysis is carried out on the bus system using Newton Rapson method. A VSM-STATCOM is connected at that weakest bus in synchronization to the grid injecting reactive power. For the analysis a fault is introduced on any of the line and voltage profile of the weakest bus is observed with and without VSM-STATCOM. The VSM-STATCOM is also compared to a conventional control STATCOM which has no inertia module. A comparative analysis is carrier out with parameters of voltage magnitude and frequency of the weak bus taken into consideration. The magnitude and frequency parameters of conventional STATCOM and VSM-STATCOM are measured using phasor measurement units. The model is designed using MATLAB Simulink power systems library block sets with graphical user interface (GUI) environment.
Shaik Mohammed Mukassir, Gulam Amer, Syed Mujtaba Mahdi Mudassir, and Preeti Kabra
IEEE
Power quality is an essential customer focused issue which needs to be addressed, avoiding malfunctioning of electrical equipments, linear and non-linear loads connected to the point of common coupling. The power quality at grid gets affected when we connect alternate dependant energy source, like wind energy system or any other renewable energy sources. The performance of wind turbine connected to electric grid affects the power quality and thereby it is determined on the basis of measurements and norms followed according to the guidelines given by International electro-technical Commission standard, IEC-61400. The concern issues of power quality which need to be addressed are-the active power, reactive power, variation of voltage, flicker, harmonics, power factor and electrical behavior of switching operation and these are measured according to national/international guidelines. This paper demonstrates the power quality problem due to installation of wind turbine with electric grid. The proposed scheme with best optimum results to resolve power quality problems are signify in this STATCOM control Scheme along with Battery energy storage system(BESS). In this proposed scheme Static-Compensator (STATCOM) is connected at point of common coupling(PCC) along with sinusoidal conventional energy source. This scheme also mitigate the issues of power quality when are due to non linear load, Adjustable Speed Drives (ASD), UPS system, and also improves the voltage profile along reduces Total Harmonic Distortion (THD). BESS system suppresses the issues which are caused by variation of wind power due to climatically changes in wind. The results are simulated using MATLAB/Simulink in power system block set.