Browsing Journal Articles (EN) by Title
Now showing items 28-47 of 60
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Measurements and Analysis of Large-Scale Path Loss Model at 14 and 22 GHz in Indoor Corridor
(IEEE, 2018-04)Fifth generation wireless communications will exploit the enormous chunk of bandwidth available at millimeter-wave frequency bands. Accordingly, an accurate and simple path loss model is critical for indoor environments, ... -
Modeling and Energy Management Strategy in a Grid Connected Solar PV System
(Scientific & Academic Publishing, 2021-09)Electric power is substantially an important resource in the modern world. With the increase in demand for electric energy, there is a need to search for alternative energy sources because conventional resources are being ... -
Modelling and loading limits for kenya coast power network using continuation power flow
(2016)Shore to ship power connection for docked ship has recently been applied as one way of limiting pollution in ports. This paper studies the effect that a shore to ship connection at the port of Mombasa would have on the ... -
Multiobjective optimal power flow for static voltage stability margin improvement
(Elsevier, 2021-12)Worldwide, utilities are aiming to increase the stability of modern power systems during system disturbances. Optimizing generation scheduling can improve system security in contingency and stressed conditions while lowering ... -
A neuro fuzzy model of an induction motor for voltage stability analysis using continuation load flow
(2011)This paper uses the concept of the continuation power flow analysis used in voltage stability analysis.It uses the continuation load flow to plot the PV (pressure-volume) curves of an induction motor load. A neuro-fuzzy ... -
Neuro-Fuzzy Control Technique in Hybrid Power Filter for Power Quality Improvement in a Three-Phase Three-Wire Power System
(2015-11-18)Hybrid power filters have proven to play a vital role in harmonic elimination as well as reactive power compensation in power systems concentrated with highly nonlinear loads which has in the last decade increased due ... -
Novel Modeling of a Fast DC Breaker for a VSC-HVDC Transmission System Protection
(2017-11)The inability to quickly isolate the faulty sections of the direct current (DC) network damages the converters and the transmission system. Further delay in fault interruption can be escalated to the generation system thus ... -
Online Campaign in Kenya: Implementing the Facebook Campaign in the 2013 General Elections
(2015-07)The study investigated the implementation of the Facebook campaign in general elections in Kenya. The study utilized the mixed methods sequential explanatory design. Quantitative data was drawn, followed by qualitative ... -
Optimal Battery Sizing of a Grid-connected Residential Photovoltaic System for Cost Minimization using PSO Algorithm
(2019)This paper proposes a new optimization technique that uses Particle Swarm Optimization (PSO) in residential grid connected photovoltaic systems. The optimization technique targets the sizing of the battery storage system. ... -
Optimal location of TCSC and its use in congestion management
(2015)Over the last two decades, electricity demand has increased substantially while the expansion of generation and transmission network has been limited due to environmental and/or economic constraints of building new ... -
Optimal siting and sizing of single SPV system in radial distribution network for loss reduction based on maximum power saving technique
(2016)This paper presents the optimal placement of aSPV (Solar Photovoltaic) system in thedistribution system using the backward and forward sweep method based on the analytical maximum power saving technique for the maximum ... -
Optimal Switching Sequence using a Metaheuristic Algorithm for Feeder Reconfiguration
(International Research Publication House, 2018)Electrical energy is continuously lost due to resistance in the power system networks. Distribution system experience enormous power losses as compared to the rest of the network. Solutions that reduce distribution power ... -
Optimal under frequency load shedding using CUCKOO search wirh levy flight algorith for frequency stability improvement.
(2015)Frequency stability in a power system is very important as it determines the synchronous speed of electrical machines. Therefore it should remain within acceptable limits even when the system is disturbed. In order to ... -
Optimal under-voltage load shedding using cuckoo search with levy flight algorithm for voltage stability improvement
(2015)Voltage stability has become a serious threat of modern power system operation nowadays. To tackle this problem properly, load shedding is a countermeasure taken as a last resort. However, its consequences might result in ... -
Performance Study of Path Loss Models at 14, 18, and 22 GHz in an Indoor Corridor Environment for Wireless Communications
(2021-03)The critical rule to achieve extremely high peaks of data transmission is the availability of a tremendous amount of bandwidth. The super high frequency (SHF) and the millimeter-wave (mmWave) frequency bands are the ... -
Placement of fact devices fo voltage profile improvement and loss reduction
(2015)Abstract— Flexible Alternating Current Transmission System (FACTS) devices are solid state converters that have the capability of controlling various electrical parameters such as reactance, power angle and ... -
Power output maximization of a PMSG based standalone wind energy conversion system using fuzzy logic
(2016)This paper proposes a Fuzzy Logic Controller for Maximum Power Point Tracking of a case study wind energy conversion system (WECS).The system consists of a standalone fixed pitch, variable speed wind turbine directly coupled ... -
Power system transient stability enhancement with application of SSSC and IPFC facts devices
(2015)The complexity due to massive growth of power systems has to increased demand of electrical energy giving rise to numerous stability challenges. In these situations, Flexible Alternating Current Transmission System (FACTS) ... -
Print Media Managers’ Perception of Integration of New Media by Newspapers in Kenya
(2019-01)The study examined print media managers’ perception of adoption of new media in newsrooms in Kenya. Integrating new media in print media houses can be traced back to 2009. However, few studies have examined the managers’ ... -
Reactive Power-Voltage-Based Voltage Instability Sensitivity Indices for Power Grid With Increasing Renewable Energy Penetration
(2020-05)In this work, a reactive power-voltage (QV)-based framework to evaluate the voltage instability sensitivities of power system buses to increase in renewable energy (RE) penetration has been developed using two sensitivity ...