Total Power Generation Capacity Research Articles

An effectiveness evaluation method for debris flow control engineering for cascading hydropower stations along the Jinsha River, China

Four large hydropower stations are located along the Jinsha River, in an area that has the highest frequency of large damaging debris flows in China. The total power generation capacity of the dams is >42 million kilowatts. Through field investigation, laboratory analysis, model calculation, and statistical analysis, we studied the debris flows occurring in the gullies near the Baihetan hydropower station to determine the characteristics of their dynamic parameters and the effectiveness of existing debris flow control measures. The dynamic parameters of debris flows vary significantly because of the different characteristics of the fluvial basins and their longitudinal slope gradients. Evaluation results showed that the existing debris flow control measures in the Aizi and Dazhai gullies should be able to withstand events with 100-year recurrence period. The debris flow risk in these gullies is therefore low in the present situation. It is important to note that these control measures would also be adequate for events with 500-year recurrence period; therefore, the debris flow risk would remain low in the theoretical future situations. We propose an evaluation method of the effectiveness of debris flow engineering control based on an analysis of the engineering measurements' effectiveness. The research results can be implemented to improve the design of the Baihetan hydropower station. More importantly, the results can be applied for the development of evaluation methods of the effectiveness of other similar and significant projects in China and elsewhere.

Research on simulation technology of power system operation and dispatch control based on trend tracking

Over the past decade, Chinese energy structure and power system technology have undergone tremendous changes. First, the proportion of new energy in power generation capacity is increasing, and the permeability of some areas has reached 30% - 50% of the total power generation capacity; second, the characteristic of power electronics in power system is becoming more and more obvious. The impact of these two aspects on the power system is that the power fluctuation of the power grid is intensified, and the power flow is flexible and changeable, which brings new challenges to the operation scheduling and simulation technology of the power system. Therefore, based on Power System Analysis Synthesis Program (PSASP) electromechanical transient simulation program, this paper studies and proposes a power grid regulation and control analysis method, it can help the dispatchers and operators to improve the dispatching plan and the accuracy of various kinds of anticipated faults. This method seeks to simulate the power flow fluctuation of the real power grid approximately. The validity of the proposed method is verified by the simulation calculation of some year national interconnection data.

Prospecting of renewable energy technologies for the Emirate of Abu Dhabi: a techno-economic analysis

This manuscript aims to provide a roadmap to support Abu Dhabi's target to ensuring renewable energy (RE) sources accounting for at least 7% of the Emirate's total power generation capacity by 2020. On the basis of official power generation forecasts, a target of 1.4 GW was set to reach this target. Out of nine commercially available RE technologies assessed, five were found to be viable options, with three of them - wind power, concentrated solar power (CSP) and solar photovoltaic power - individually able to reach or surpass the 1.4 GW target. However, based on the complex techno-economic analysis undertaken in this study, in order to achieve the 1.4 GW RE target, the recommended mix of RE sources is 10% wind offshore, 30% wind onshore, 35% solar photovoltaic, 5% concentrated solar with storage and 20% waste to energy. Waste to energy addresses Abu Dhabi's goal diverting waste from landfills by 85% by 2030.

Co-Benefit Research on IGCC Technology Used in the Power Plant

China has mainly power generation capacity of coal-fired power plants. Coal-fired power plants account for about 80% of total power generation capacity in total annually. It will inevitably lead to a large amount of pollutant emissions, therefore, IGCC technology is particularly important to promote. This paper intends to analysize the environmental benefit and economic benefit of the IGCC technology used in the power plant based on the developed methodology. The purpose is to understand the advantages of IGCC technology for energy conservation and emissions reduction in the electric power industry to provide better technical references.

Indian power sector during the plan period: Strategy and gaps

This paper divides strategy of developing of Indian power sector into three distinct phases: General phase 1951–1969, Intensive phase 1969–1991, Reform phase 1992–2005. We observe that in the total energy mix, share of thermal power has expanded from 55.18 to 71.26 percent from (General phase, 1951–1969) to (Reform phase, 1992–2005). Further, we calculate the trends in the installed capacity built during these phases using simple econometric Semi-Log Model. Results show that during the General phase, total power generation capacity increased at 10.09 percent CAGR in spite of concentration on non- conventional energy generation sources, further, it rose only at 7.00 percent CAGR during the Intensive phase. The slippage in the power generation capacity occurred during the Intensive phase can be attributed to several impediments. However, during the Reform phase, installed capacity of electricity generation increased at 15.34 percent CAGR over the earlier phases. This is because of the implementation of economic and power sector reforms since1991 in India.

The Performance of Indian Power Sector for Pre and Post-Reforms Period

This paper analyses pre and post-reform performance of Indian power sector. The averages of the physical indicators of two periods have been compared and tested for differences if any, using independent t test. We find that average consumption rate of electricity used for agricultural, domestic and commercial purposes have improved. However, the electricity used for industrial sector has shown a declining trend during the reform period. Other important findings emerge from the study are: average transmission and distribution losses increased during the reform period much faster than the pre-reform period; the energy generation mix remains dominated by thermal power; the share of private sector into total power generation capacity has improved marginally by 2.5 per cent; the share of hydro power has declined from 29.50 to 16.52 per cent; and energy generation by nuclear source remains the same during the reform period.

Energy potential through agricultural biomass using geographical information system—A case study of Punjab

Agricultural biomass has immense potential for power production in an Indian state like Punjab. A judicious use of biomass energy could potentially play an important role in mitigating environmental impacts of non-renewable energy sources particularly global warming and acid rain. But the availability of agricultural biomass is spatially scattered. The spatial distribution of this resource and the associate costs of collection and transportation are major bottlenecks for the success of biomass energy conversion facilities. Biomass, being scattered and loose, has huge collection and transportation costs, which can be reduced by properly planning and locating the biomass collection centers for biomass-based power plants. Before planning the collection centers, it is necessary to evaluate the biomass, energy and collection cost of biomass in the field. In this paper, an attempt has been made to evaluate the spatial potential of biomass with geographical information system (GIS) and a mathematical model for collection of biomass in the field has been developed. The total amount of unused agricultural biomass is about 13.73 Mt year −1 . The total power generation capacity from unused biomass is approximately 900 MW. The collection cost in the field up to the carrier unit is US$3.90 t −1 .

Second PV line for Shell Solar in Germany

Shell Solar Deutschland GmbH has opened a second PV cell manufacturing line at its factory in Gelsenkirchen, Germany. The new line will produce more than six million solar cells a year with a total power generation capacity of 15 MW, more than doubling the output of the factory. In total the factory will produce 25 MW per year, the equivalent of the power consumption of about 6000 West European households. Visit www.re-focus.net for the latest renewable energy industry news

102 ガスエンジンを中心とした熱効率向上に向けた取り組み(FM-1 ガスタービン以外の熱機関の性能向上(1))

Although the situation of cogeneration in Japan has become quite important nowadays, the ratio of its capacity to the total power generation capacity of electric companies is about 2%, which is by far smaller than those in northern European countries. The main reason is the difference of climate. In northern European countries, they have cool climate, which results in sufficient needs for the hot water supply by cogeneration facilities. In contrast, Japanese climate has a hot and humid summer with few need for hot water supply. To disseminate cogeneration further under these circumstances, we must make much of the power generation efficiency as well as the temperature of exhaust heat and NOx reduction. This paper describes the recent efforts of increasing the thermal efficiency of gas engines commonly used in cogeneration facilities.