• Review of HVDC Circuit Breakers Topologies 

  Muriuki, J. K.; Muriithi, Christopher M.; Ngoo, L.; Nyakoe, G. (2017-05)

  Voltage Source Converter-High Voltage Direct Current (VSC-HVDC) is the most efficient and reliable method for electrical power transmission over long distances. The greatest challenge with VSC-HVDC system is that short-circuit ...
• Application of Spritz Encryption in Smart Meters to Protect Consumer Data 

  Kiarie, L. K.; Langat, P. K.; Muriithi, Christopher M. (2019)

  The ongoing upgrade of the electrical power system into a more powerful system known as Smart Grid has both benefits and costs. Smart Grid relies on advanced communication and hence offers better services through improved ...
• The use of RC4 Encryption to Provide Privacy for Smart Meters 

  Kamau, L.; Langat, K.; Muriithi, Christopher M. (2018)

  The electrical power grid is undergoing improvements and is being transformed to the Smart Grid. Smart Grid uses two-way power and information flow to better monitor, plan and control the electrical power grid. Advanced ...
• GENCO Optimal Bidding Strategy and Profit Based Unit Commitment using Evolutionary Particle Swarm Optimization Illustrating the Effect of GENCO Market Power 

  Bikeri, A. K.; Muriithi, Christopher M.; Kihato, P. K. (Institute of Advanced Engineering and Science, 2018)

  In deregulated electricity markets, generation companies (GENCOs) make unit commitment (UC) decisions based on a profit maximization objective in what is termed profit based unit commitment (PBUC). PBUC is done for the ...
• 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 ...
• Voltage stability assessment and enhancement of power grid with increasing wind energy penetration 

  Adetokun, B. B.; Muriithi, Christopher M.; Ojo, J. O. (Elsevier, 2020)

  This paper presents the voltage stability assessment of power system with increasing wind energy penetration. The effects of increasing Doubly-Fed Induction Generator-based Wind Energy Conversion System (DFIG-WECS) penetration ...
• Energy Flow Strategy For A Small Scale Grid Tied Photovoltaic System Under Net Metering 

  Nibaruta, R.; Muriithi, Christopher M.; Ngoo, L (2019-10)

  Grid connected PV systems continue to attract investors and electricity customers all over the world. Due to interconnection with the utility grid, the system can glean some benefits such as selling PV electricity surplus ...
• Contribution of FACTS Devices to the Transient Stability Improvement of a Power System Integrated with a PMSG-Based Wind Turbine 

  Akpeke, N. E.; Muriithi, Christopher M.; Mwaniki, C. (2019)

  The increasing penetration of wind energy to the conventional power system due to the rapid growth of energy demand has led to the consideration of different wind turbine generator technologies. In fault conditions, the ...
• 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. ...
• Strengthening The Transient Stability Of A Power Grid Coupled With Wind Turbine Using Thyristor Controlled Series Capacitor 

  Akpeke, N. E.; Muriithi, Christopher M.; Mwaniki, C. (2019-10)

  The increase diffusion and circulation of wind energy to the conventional power system due to rapid growth of energy demand has led to consideration of different wind turbine generator technologies. It has been discovered ...
• 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 ...
• Dynamic Voltage Stability Analysis on Shore-to-Ship Power Connected System 

  Nyabuto, W.; Muriithi, Christopher M.; Kihato, P. (International Research Publication House, 2018)

  The shore to ship power connection is a technology that has been recommended as one of the ways that will help reduce emissions from marine vessels which have increased in number as a result of rapid growth in international ...
• Factors for Efficient Relationship between Contractors and Subcontractors in Project Implementation in Nairobi Kenya 

  Biketi, Felix Quentin; Kivaa, Titus; Munala, Gerryshom (The IJES, 2017)

  Construction is a complex and challenging activity owing to the technical advances, tighter regulations and need for effective management of resources for competitive edge. The projects under the industry involve many ...
• Investigation on Optimal Cutting Parameters in Turning AISI 8660 Steel Using Silicon (Sic) Whisker Reinforced Ceramic Tool 

  Wathigo, James Mwangi; Keraita, J.N.; Byiringiro, Jean B.; Muguthu, J.N. (IOSR Journals, 2017-08)

  This research was to investigate the effects of process parameter that is cutting speed, feed rate, depth of cut and machining time on the response variables in turning AISI 8660 material using whisker reinforced ceramic ...
• Voltage profile improvement using switched capacitors: case of single wire earth return distribution network 

  Nirere, M.S; Muriithi, Christopher M.; Wekesa, C. (2017)

  Most rural areas in Africa are characterized by scattered villages with a very low demand in electricity. Due to improper planning and lack of knowledge on low cost technologies, the cost of extending the grid to supply ...
• Development of a Wavelet-ANFIS based fault location system for underground power cables 

  Zawaira, H.S.; Nyakoe, G.N.; Muriithi, Christopher M. (2017)

  In the past decade, electricity demand has increased rapidly in metropolitan areas. All over the world, large scale underground power cable installations networks are replacing overhead transmission lines due to environmental ...
• Assessment of VSC-HVDC system for transient stability improvement of a power system with large wind power injection. 

  Muriuki, J.K.; Muriithi, Christopher M.; Ngoo, L.; Nyakoe, G.N. (2016)

  This paper analyzes Power System Transient Stability Improvement through a Voltage Source Converter High Voltage Direct Current (VSC-HVDC) system with Large Wind power injection. The modern large wind farms and other ...
• Wider range of tuning the proposed VSC-HVDC system for improved controller performance 

  Muriuki, J.; Muriithi, Christopher M.; Ngoo, L.; Nyakoe, G.N. (2016)

  Tuning of the Voltage Source Converters, High Voltage Direct Current (VSC-HVDC) controllers is a critical undertaking continuously carried out in power system operation to ensure system stability is kept under control ...
• 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 ...
• Power output maximization of a PMSG based standalone wind energy conversion system using fuzzy logic 

  Ndirangu, J.G; Nderu, J.N; Maina, C.M.; Muhia, A.M (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 ...

View more