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Management of Peak Loads in an Emerging Electricity Market

Energy Engineering 2022年第6期119卷 2637-2654页

作者： Edwin N.Mbinkar Derek Ajesam Asoh Jerome Ndam Mungwe Livinus Songyuh Emmanuel Lamfu Laboratoire de Génie Electrique Mécatronique et Traitement du SignalENSPYUniversitéde YaoundéIYaoundeCameroun Department of Electrical and Electronic Engineering National Higher Polytechnic Institute(NAHPI)University of BamendaBamendaCameroon Department of Electrical and Power Engineering Higher Technical Teacher Training College(HTTTC)University of BamendaBamendaCameroon mekin hydroelectric development corporation MeyomessalaCameroon ENEO Cameroun S.A. DoualaCameroon

An electricity market is a trading platform provided by the actors in the electricity sector to sell and buy electricity while maintaining the stability of the transmission network and minimizing energy *** management of electrical energy for rational use consists of all the operations that the consumers can carry out in order to minimize their electricity bill,while the producers optimize their benefits and the transmission *** reduction of active and reactive power consumption and the smoothing of daily and yearly load profiles are the main objectives in this *** developed countries already have properly functioning electricity markets,but developing countries are still in their infancy of deregulated electricity *** major tools used in smoothing the load profiles include decentralized generation,energy storage and demand response.A load power smoothing control strategy is proposed to smooth the load power fluctuations of the distribution *** required power change is determined by evaluating the power fluctuation rate of the load,and then the required power change is allocated to some generators or to some stored ***,the consumers are made to curtail their power *** ideas proposed in this work provide important opportunities for energy policy makers and *** ideas would only be feasible if there exists real-time communication among the actors in the electricity *** results indicate that as much as 1100 Megawatt-hours of energy can be stored for smoothing the load profile,when applied to the Southern Interconnected Grid of the Cameroon power system;and that Time of Use(TOU)pricing could be used instead of rotating blackouts in case of energy shortage.

关键词： Peak load electricity markets decentralized generation energy storage demand response

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Dispersion features of pollutants in a compound channel with vegetated floodplains

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Journal of Hydrodynamics 2022年第6期34卷 1095-1105页

作者： Yan-fang Zhao Jing-jing Fan Wei-jie Wang Han-qing Zhao Fei Dong Zhen Han Shi-yan Wang School of Water Conservancy and hydroelectric Power Hebei University of EngineeringHandan056038China State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin China Institute of Water Resources and Hydropower ResearchBeijing100038China China Three Gorges corporation Wuhan430010China National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety Nanjing210024China

The planting of the vegetation on the floodplain helps the ecological restoration,which is the main form of the river’s ecological ***,the current research of the river dynamics focuses on the water movement under a compound channel with the vegetated *** simulated vegetation species are selected in this paper for the flume simulation experiments of the floodplain vegetation,and the compound channel is divided into three subregions in the transverse *** Navier-Stokes equation and the eddy viscosity theory are applied to obtain the transverse distribution of the depth-averaged velocity and the results agree well with the experimental *** paper proposes a new method based on the analytical solution of the flow velocity distribution to calculate the average flow velocity in each *** results can effectively simulate the average flow velocity of the measured *** description of the pollutant transport processes in a moving stream requires a refined determination of the dispersion coefficients in the compound *** process of the pollutant concentrations in each zone and the reasons for their occurrence are elucidated on the basis of the experimental ***,the measured values of the longitudinal dispersion coefficients are obtained by the“routing procedure,”and a two-zone model of the pollutant dispersion is constructed on the basis of the hydrodynamic *** prediction method for the longitudinal dispersion coefficients is also *** the predicted and measured section average flow velocities to the two-zone model to predict the longitudinal dispersion coefficient,and the average relative errors are only 4.17%,7.15%,*** result indicates that the two-zone model can effectively predict the longitudinal dispersion *** calculation methods for the longitudinal dispersion coefficients from—various studies are *** results reveal that the p

关键词： Compound channel floodplain vegetation velocity distribution pollutant transport dispersion coefficient

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hydroelectric Power Plant Consultation Process and Public Participation: A Real Tool for Sustainable development

Hydroelectric Power Plant Consultation Process and Public Pa...

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联合国水电与可持续发展研讨会

作者： Antonio Fonseca dos Santos M Sc Colorado State University USA Brascan Brasil Corporation Environmental Manager

This paper presents the consultation process and public participation in the construction of Salto Caxias hydroelectric Power Plant, in southern Brazil, and details how the actions taken during these processes helped to implement with success the resettlement of approximately 900 families of rural works, that had to give up their land allowing the formation of the reservoir, and the economical development plan designed for the region at that time, called PROCAXIAS, that is currently being carried out creating jobs, helping to recover the economy of the region somehow stagnant since the early 1980’s.

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Ichthyofaunic Inventory and Fish Landings of Lom Pangar Hydropower Dam Reservoir in the Eastern Region of Cameroon

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Open Journal of Marine Science 2020年第4期10卷 245-259页

作者： Achille Njomoue Pandong Bruno Thierry Nyatchouba Nsangue Ekmon Mbangue N’Souvi Kodjo Maurice Vanlie Kontchou Asser Yoke Léopold Tcham Dieudonné Essola Micah Adekunle David Laboratory E3M National High Polytechnic School of Douala University of Douala Douala Cameroon College of Marine Science Shanghai Ocean University Shanghai China College of Economics and Management Shanghai Ocean University Shanghai China Netherlands development Organisation SNV Yaounde Cameroon College of Fisheries and Life Science Shanghai Ocean University Shanghai China

The Lom Pangar hydroelectric dam project located in the eastern region of Cameroon was implemented by Electricity development corporation (EDC). The impoundment of the Lom Pangar dam created a large reservoir with an area ~590 km2 and a useful storage capacity ~6 billion m3. Thereby, this impoundment has created favourable conditions for the proliferation of fishery resources. However, a fisheries assessment study based on fishing activities is essential to attain reliable information for implementing a management plan to achieve rational and sustainable exploitation. This study was carried out on the ichtyofaunic inventory and the assessment of fish landings in Lom Pangar hydroelectric dam reservoir from April 2016 to September 30, 2016. Three main groups of fishing gear have been identified, among which gillnets, traps and longlines occupy major fishing activities. Indeed, the spatial and landing sites surveies were conducted on species composition, size composition, and quantities of fish landed during the study period. Moreover, 37 species of fish divided into 16 families were found in seven different selected fish landing sites. Carp (Cyprinus carpio) was the major fish species abundantly caught by these fishing gears which accounted for 81.60% of the total catch, and the least species was sardine (Sardinella aurita). A total of 623,229 Kg of fish were landed which were dominated by those of the Wami landing site with 480,773 Kg representing 76.96% of the total landed catches. The smallest species caught was the white carp (7 cm) while the longest one was the catfish (71 cm). In addition, the species of fish in the breeding season are carp, catfish, viper fish and red tail.

关键词： Artisanal Fishing Gears Ictyofaunal Inventory Lom Pangar Hydropower Dam

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