Browsing by Author "Muriithi, Christopher M."
Now showing items 41-60 of 85
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A neuro fuzzy model of an induction motor for voltage stability analysis using continuation load flow
Ngoo, L.M.; Muriithi, Christopher M.; Nyakoe, G.N; Njoroge, S.N (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 ... -
New approach for design shunt active power filter for power quality improvement in a three phase three wire system
Bett, N.K.; Muriithi, Christopher M.; Hingarine, P. (2020)Use of power electronic-based load has increased in the resent decade. These loads draw non-sinusoidal currents and voltages from the utility supply generating harmful harmonics. Injection of harmonic currents and voltages ... -
Novel Modeling of a Fast DC Breaker for a VSC-HVDC Transmission System Protection
Muriuki, J.; Nyakoe, G.; Muriithi, Christopher M.; Ngoo, L (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 ... -
Opportunities and challenges for smart grid communications
Kamau, Lincoln; Kibet, Philip; Muriithi, Christopher M. (2010)The current power grid is in the verge of being improved. Recent technological advances have made possible the creation of a new and improved grid known as the smart grid. Smart grid allows for better interaction between ... -
Optimal Battery Location for Minimizing the Total Cost of Generation in a Power System
Karanja, J. M.; Hinga, P. K.; Ngoo, L. M.; Muriithi, Christopher M. (2020)Wind is one of the major and fast growing source of green energy in the world. However, it’s naturally variable and this reduces its percentage penetration in a power system because of costs associated with balancing ... -
Optimal Battery Sizing of a Grid-connected Residential Photovoltaic System for Cost Minimization using PSO Algorithm
Nibaruta, R.; Muriithi, Christopher M.; Ngoo, L (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
Muisyo, I.N; Kaberere, K.K; Muriithi, Christopher M. (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 Placement of FACTS devices using voltage Stability Indices
Mutegi, A. M.; Kihato, Peter K.; Muriithi, Christopher M.; Saulo, M. J. (2016)Power System Voltage stability remains a major challenge for power utilities across the world. This research uses static load flow methods namely the voltage stability indices to come up with an optimal placement of FACTS ... -
Optimal siting and sizing of single SPV system in radial distribution network for loss reduction based on maximum power saving technique
Madjissembaye, N.; Thiaw, L.; Muriithi, Christopher M.; Wekesa, C.W (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 Sizing and Placement of Solar Photovoltaic based DGs in the IEEE 9 bus system using Particle Swarm Optimization Algorithm
Orenge, R.; Muriithi, Christopher M.; Nyakoe, G. (2018)Solar energy is one of the most commonly exploited renewable resource globally. Integration of power from solar to the main grid can either bring positive or negative impact which normally depends on their size and location. ... -
Optimal Switching Sequence using a Metaheuristic Algorithm for Feeder Reconfiguration
Juma, S. A.; Muriithi, Christopher M.; Ngoo, L. M. (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.
Mwaniki, C.; Muriithi, Christopher M.; Abungu, N.O.; Nyakoe, G.N. (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
Mwaniki, C.; Muriithi, Christopher M.; Abungu, N.O.; Nyakoe, G.N (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 review of the VSC-HVDC based controllers
Muriuki, J. K.; Muriithi, Christopher M.; Ngoo, L. M.; Nyakoe, G.N. (2016)The Voltage Source Converters, High Voltage Direct Current (VSC-HVDC) system is the most preferred alternative technology for transmission and distribution of electrical power due to its intrinsic distinctiveness in ... -
Placement of fact devices fo voltage profile improvement and loss reduction
Sutter, J.; Nderu, J.; Muriithi, Christopher M. (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 factory load flow sensitivity analysis of an induction motor load model
Kinyua, J.M,; Muriithi, Christopher M.; Murage, D. K. (2010)Power factory Load flow sensitivity is a method used to obtain certain relationship between dependent and independent variables using differential relationship among physical measure in systems. Voltage sensitivity analysis ... -
Power system transient stability enhancement with application of SSSC and IPFC facts devices
Sutter, J.R; Nderu, J.N; Muriithi, Christopher M. (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) ... -
Profit based unit commitment in deregulated electricity markets using a hybrid lagrangian relaxation - particle swarm optimization approach
Bikeri, Adline K.; Muriithi, Christopher M.; Kihato, Peter K. (2017)In deregulated electricity markets, individual generation companies (GENCOs) carry out independent unit commitment based on predicted energy and revenue prices. The GENCOs unit commitment strategies are developed with the ... -
Profit based unit commitment in deregulated electricity markets using a hybrid lagrangian Relaxation - particle swarm optimization approach
Bikeri, Adline K.; Muriithi, Christopher M.; Kihato, Peter K. (2017)Abstract—In deregulated electricity markets, individual generation companies (GENCOs) carry out independent unit commitment based on predicted energy and revenue prices. The GENCOs unit com-moment strategies are developed ... -
Profit based unit commitment using evolutionary particle swarm optimization
Bikeri, Adline K.; Kihato, Peter K.; Muriithi, Christopher M. (2015)The profit based unit commitment (PBUC) problem determines an optimal unit commitment schedule for a generation company (GENCO) participating in a deregulated environment with the aim of maximizing its profit. This is ...