Priye Kenneth Ainah | Niger Delta University (original) (raw)

Papers by Priye Kenneth Ainah

Energy and Power Engineering

International Journal of Scientific and Research Publications (IJSRP)

2021 Conference on Information Communications Technology and Society (ICTAS), 2021

Noise handling is a critical aspect of image processing, which can significantly affect the accur... more Noise handling is a critical aspect of image processing, which can significantly affect the accuracy of classification and recognition algorithms. In this paper, we propose a technique for improved noise handling in sparse input feature maps where the noise signal is also sparse. The signal-noise relationship is formulated as an optimization problem which is solved by a genetic algorithm. The genetic algorithm is applied to optimize the setting of a non-convexity parameter which yields a more accurate image sparse matrix. The resulting feature map is then classified using a densely connected convolutional network (DenseNet). Lung computed tomography images were used for the experiments. The proposed approach achieves better performance when the classification results are compared with a case in which the input signal has not been denoised using the proposed approach.

Research Journal of Applied Sciences, Engineering and Technology, 2013

The study analyses the use of photovoltaic standalone AC system employing a battery and an invert... more The study analyses the use of photovoltaic standalone AC system employing a battery and an inverter, which will supply continuous electricity in rural communities of Bayelsa State. It showcases the enormous potential of solar radiation in Bayelsa State and the benefit of taping it to solve the growing energy demand of rural communities. The analysis looks at the need to power a building load demand in Akassa community of Brass Local Government Area (BLGA) of Bayelsa State in order to solve the increasing energy demand of the community. The technology is based on a Photovoltaic (PV) system, a battery and an inverter to solve the building load demand for 24 h. This enormous potential of solar radiation estimated, can be explored with the use of photovoltaic modules to address the problem of inadequate rural communities' electrification of Bayelsa state.

International Journal of Scientific and Engineering Research

Due to the decline in power of photo voltaic module as a result of changes in irradiation which a... more Due to the decline in power of photo voltaic module as a result of changes in irradiation which affect the photo-voltaic module performance, the design and implementation of DC-DC boost converter operating in continuous conduction mode with a Maximum power point tracker using a Micro controller connecting a 555 timer circuit to generate Pulse Width Modulation (PWM) signal to established a constant output voltage was proposed. The system is a close loop system and continuously measure samples of current and voltage fromoutput of photo-voltaic module and reference voltage at the load (lead base light, 24 V) to obtain instantaneous power. Base on this, the 555 timer circuit (pulse generator) constantly takes in DC voltage through a current source to control the duty cycle of the DC-DC boost converter. Also PSIM and Pspice software were used to simulate DC-DC boost converter and compare simulation results with the practical operation of the design system.

The problem of quality power, challenges of generation, transmission and distribution of electric... more The problem of quality power, challenges of generation, transmission and distribution of electrical energy to its end users has resulted in incessant black out in Nigeria. This challenges and problems have driven the electricity industry into a reformation process to solve this menace by privatizing the industry which has led to the introduction of the independent power producers scheme (IPPs). In this paper a solution of integrating IPP into the grid in the form of distribution generation (DG) was analyzed to curb the challenges and problems facing the industry in Nigeria. It looked at the potential benefits of distribution generation (DG) that is, the application of renewable (photovoltaic and solar thermal) and sustainable energy (gas fired micro-turbine) of few KW to 50MW into the distribution network of the Nigerian grid to solve the problem and challenges of the industry. KEYWORDS: Distribution generation (DG), independent power producer (IPP), renewable energy, distribution n...

International Journal of Scientific and Engineering Research

The paper presents a simple method for estimating hourly solar radiation on an incline south faci... more The paper presents a simple method for estimating hourly solar radiation on an incline south facing surface. The method used is the Duffie and Beckman approach for estimating hourly solar radiation on an incline surface using some climatic data in Port Harcourt city, Nigeria. The key climatic data used are latitude, declination and clear index. The results show enormous potential of solar radiation from sunrise to sunset per day in the city. For the estimated days, December showcases highest radiation with lowest in June and if it is utilized for energy, it will reduce carbon dioxide (CO2) level in the city.

The paper is aimed at the performance analysis and examination of t he behavior of photovoltaic m... more The paper is aimed at the performance analysis and examination of t he behavior of photovoltaic module based on the mode of configuration and the effect of changes in irradiance on the module. The connections studied are single, series and parallel. Different irradiations were used for the experiments. The analysis of these connection were done through the careful examinations of the electrical parameters such as the maximum operating voltage (V MPP), maximum operating current (I MP P), maximum operating power on the characteristic curves that is, the I-V and P –V curves. The electrical parameters, V MPP and I MPP were used to analyze the maximum operating power (P MPP) of each connection. The report showed that the manner in which modules were connected to form strings affects electricity generation and the strength of the light incident on a photovoltaic module influences electricity generation.

TURKISH JOURNAL OF PHYSICS, 2013

Due to the increased use of solar energy resources globally, the study of the available solar res... more Due to the increased use of solar energy resources globally, the study of the available solar resources is essential for systems that use solar energy. This paper uses the Duffie and Beckhman method for estimating the best possible tilt angle for solar radiation using some climatic data such as declination, latitude, and clear index for photovoltaic and solar thermal systems application in the city of Yenagoa. This research was conducted with different tilt angle ranging from 15 • to 65 • tilt and it was shown that the best tilt angle for solar energy system application for Yenagoa falls in the range of 15 • to 45 • tilt.

Proceedings of the 19th IFAC World Congress, 2014

High penetration of Photovoltaic distributed generators (PV-DG) on the low voltage (LV) grid is a... more High penetration of Photovoltaic distributed generators (PV-DG) on the low voltage (LV) grid is as a result of the deregulation of the electricity market and increasing environmental issues related to global warming arising from the use of fossil fuel power plants. The penetration of PV systems on LV grid is seen as a viable option to fossil fuel power plants and it is gaining popularity globally. The PV technology is in a period of rapid expansion and is increasingly becoming important in the electricity market due to their ability to carry out stand-alone power, grid support and greenhouse gases reduction. However, the proliferation of PV on LV grid has raised concern to distribution network operators (DNO) due to the negative impact of high penetration level of PV. The negative impact are protection issues, increased losses, transformer and cable rating issues, sudden voltage rise and reverse power flow which has affected the behavior of the traditional LV grid. The negative impact of high PV penetration has affected the operation of on load tap changers (OLTC) and automatic voltage regulation; therefore, there is a need to incorporate communication with PV and voltage control devices to curtail the voltage rise issues. This paper discusses the issue of sudden voltage rise and reverse power flow resulting from high penetration of PV on LV grid and also the need for a smarter grid.

Electric Power Components and Systems, 2004

ABSTRACT Interests in seeking accurate and reliable parameters for identification methods of indu... more ABSTRACT Interests in seeking accurate and reliable parameters for identification methods of induction machines constitute major modeling concerns for performance prediction and assessment. This article presents an optimization, technique-based, parameters identification for the machine steady-state operation. This method is based on a genetic algorithm incorporating a new adaptive scheme for a computing time reduction. It aims to accurately identify the parameters by solving a nonlinear curve fitting problem. Finally, the obtained machine performances of the adaptive genetic algorithm method are compared with both reference and near-least-square-error estimator using experimental variable load measurements.

Energy and Power Engineering, 2020

The ability of power system to survive the transition from preloading state to the gradual increa... more The ability of power system to survive the transition from preloading state to the gradual increase in load and thereafter reach an acceptable operational condition is an indication of transient stability of the system. The study analyzed load shedding scheme through the use of empirical measurement tools and load-flow simulation techniques. It was geared towards determining effective load shedding strategies to reduce unnecessary overload in order to achieve dynamic stability of the electric power network in the Export Free Trade Zone, Calabar, Nigeria. From the tests and the measurements taken, it was observed that the real and reactive powers from the generator and the mechanical power from the turbine engine were stable when the load shedding controller was switched on, as compared to when it was off. The engine speed, the bus-bar frequency and the output voltage of the generator stabilized within a shorter time (about 8 seconds) when the controller was switched on than when it was on the off condition. Also, there were noticeable fluctuations in the speed of the remaining two generators. It became stable at about 12 seconds after the loss. The variations were 0.3 per cent of the nominal speed value. The excitation voltage fluctuated from 1.2 (pu) to 4.5 (pu) when the bus voltage dipped as a result of additional load. It then came down and stabilized at 1.8 (pu) after few swings. This confirmed that the stability of power system is much enhanced when load shedding controllers are effectively configured on the network.

Due to the high cost of tariff of the public grid system, the maintenance and running cost of the... more Due to the high cost of tariff of the public grid system, the maintenance and running cost of the isolated generators, it was necessary to look at an alternative source of providing hot water supply for domestic and other applications. The enormous potential of solar radiation in Nigeria is a viable option for the use of photo voltaic and solar thermal systems to convert the solar energy to solve our growing energy needs. The paper therefore, is aimed at analyzing and designing a solar thermal system for an average domestic building hot water requirement for a family of five using the parameters of an evacuator tube solar collector in Yenagoa city, Nigeria. From the analysis, the hot water requirement for the building load was estimated at 30 litres for rainy and 20 litres for dry season. Due to the high solar intensity the load was increased to 50 litres to maintain the average temperature. The assumed constant temperature of the main water supply was 18°C and 22°C (rainy and dry s...

Digital signal processing (DSP) is gaining popularity in the field of computer and Electrical eng... more Digital signal processing (DSP) is gaining popularity in the field of computer and Electrical engineering, and has applications in areas such as renewable energy, Electronics and communications. This paper presents the hardware application of dq-PI current controller and DSP TMS320F28335 for generating the PWM switching signal for a three phase voltage source inverter (VSI) using MatLab/Simulink and Code Composer StudioTM version five (CCS V5). The system was first simulated in Matlab/Simulink environment using the dq-PI current controller to generate the logic pattern for the VSI and the result analyzed. The testing and implementation of the dq-PI current controller and DSP TMS320F28335 using SPWM technique for the VSI was presented and result validated. The research is important because the implementation is simple and can be used to investigate the performance of active filters for grid integrated VSI.

This paper describes an advanced design systems (ADS) approach of stepped impedance microstrip lo... more This paper describes an advanced design systems (ADS) approach of stepped impedance microstrip low pass filter design for maximally flat or Butterworth responses. The cut-off frequency is 4 GHz with source and load impedances of 50 Ω. The insertion loss at passband is 0.5 dB and stopband is 20 dB. In this filter design, an order N = 7 was chosen for maximally flat (Butterworth) filter prototype. Substrate properties such as relative dielectric constant ∈r = 4.2, loss tangent tanδ = 0.02, height of dielectric material h = 2.0 mm and conductor thickness of 0.01 mm were used in calculation of the length and width of the transmission line. Design of lumped circuit for microwave filter prototype scaled in frequency and impedances is discussed. Equivalent transmission line was obtained by converting lumped circuit into certain lengths and characteristic impedances. ADS simulation software was used to plot maximally flat filter characteristics. The plots show variation of incident wave S(1...

Electricity is the life blood of every Nation's technological and economic growth. This growth an... more Electricity is the life blood of every Nation's technological and economic growth. This growth and development is tied to reliable electricity supply, and any country whose power supply is epileptic, have a greater risk of unemployment. The poor state of electricity supply in Nigeria is alarming and it has affected the wellbeing and security of life and properties of many citizens. The power crises in Nigeria is due to the lack of transmission infrastructure and poor coordination of the transmission system. This paper highlight the challenges of the Nigerian power transmission system and the benefits of smart grid (SG) technology to solve the challenges and problems of the transmission system so as to meet the increasing demand for electrical energy.

As energy demand all over the world continues to grow there is also an ever increasing intent by ... more As energy demand all over the world continues to grow there is also an ever increasing intent by some utility customers to bypass their energy meters, an act referred to as energy theft; this contributes to the ATC&C (Aggregate Technical Commercial & Collection) losses experienced by distribution utilities, a situation that is worrisome and is responsible for the huge low return on investment to DISCOs (Distribution Companies) in Nigeria. This paper focuses on improving the functionalities of energy metring devices by upgrading them from just being STS (System Transfer Specific) one-way communication to AMI (Advanced Metering Infrastructure) two-way communication smart devices. The meter has added functionalities of real time tamper report and user consumption request via SMS. This is made possible with the introduction of micro switches to the chassis of the meter, conduit housing the entry cables and the dedicated report request button. This is implemented to trigger a connected PIC micro-controller in event of a change in any of their digital states as monitored by the micro-controller and instructions in software code using the C programming language. This product in practise will increase distribution utility company's investment on return as customers will be cautious not to engage in energy theft (Tampering of Meter installation).

Several methods have been used to estimate the parameters of induction machines. The basic method... more Several methods have been used to estimate the parameters of induction machines. The basic method is the standard no-load and block rotor test. Although accurate results are obtained using this method; however, performing the locked rotor test is difficult, requiring full control of the voltage by using appropriate instrument to mechanically secure the rotor in the locked condition. Therefore, in this paper, a method requiring only a no-load test to extract the parameters of the induction machine is presented. The proposed method is based on the modification of the third impedance calculation of the IEEE standard 112. To validate the proposed method, parameters of a standard 7.5kW induction machine are estimated. Based on the experimental results, the maximum recorded error in the parameter estimation is less than-2.881% when compared to the reference parameters obtained from the conventional no-load and blocked rotor test.

Energy and Power Engineering

International Journal of Scientific and Research Publications (IJSRP)

2021 Conference on Information Communications Technology and Society (ICTAS), 2021

Research Journal of Applied Sciences, Engineering and Technology, 2013

International Journal of Scientific and Engineering Research

TURKISH JOURNAL OF PHYSICS, 2013

Proceedings of the 19th IFAC World Congress, 2014

Electric Power Components and Systems, 2004

Energy and Power Engineering, 2020