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Performance analysis for power generating system by using matrix method

Science China(Technological Sciences) 2011年第7期54卷 1689-1696页

作者： Kanji OSHIMA Yohji UCHIYAMA Department of Risk Engineering Graduate School of Systems and Information Engineering University of Tsukuba

We verified that the matrix method, a process analysis method used mainly for life cycle inventory analysis, has several advantages in the analysis of power systems, which have recently become more complex to enhance efficiency and to reduce C02 emissions. While designing a conceptual thermodynamic model of a complex power system, the matrix method provides a definite procedure and facilitates calculations, even if there is a recttrsive loop between the upstream and downstream processes. Similarly, in the case of partial modification to the constructed model, the matrix method can potentially reduce the time and effort required to calculate the thermodynamic balances, even if the constructed model is designed by others. In this study, we obtained mass flow and energy balances of example model power systems by the matrix method from the common thermodynamic conditions including temperatures and pressures which are set on the basis of an existing industrial steam power system. While analyzing the environmental impact of complex multiproduct power systems, such as carbon emissions, the matrix method can be used to easily derive the environmental impact of each final product. We could verify the efficacy of the matrix method in accurately deriving that of an example model power system.

关键词： power system matrix method efficiency environmental impact hybrid power generation conceptual design

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Electricity Price of hybrid power System and Decision Making of Renewable Energy Investment Capacity

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Journal of Systems Science and Information 2018年第3期9卷 193-213页

作者： Jiaping XIE Weisi ZHANG Yu XIA Ling LIANG Lingcheng KONG School of International Business Administration Shanghai University of Finance and Economics Tourism and Event Management School Shanghai University of International Business and Economics Business School East China University of Science and Technology

In the existing electricity market,the traditional power suppliers and renewable energy generators coexist in the power supply side. In the power supply side,renewable energy generators generate power by wind and other natural conditions,leading renewable energy output a certain randomness. However,the low marginal generating cost and the reduction of carbon emissions,and thus brings a certain advantage for renewable energy compared to alternative energy. Electricity,as a special commodity,stable and adequate power supply is a necessary guarantee for economic and social development. power shortage situation is not allowed in the power system,and the extra power needs to be handled for the purpose of safety. In this paper,the hybrid power generated by renewable energy generators and traditional energy generators is used as power supply,and then the electricity market sells hybrid power to electricity consumers,the hybrid power system determines the optimal daytimeprice,nighttime price,and the optimal installed capacity of the renewable energy suppliers. We find that the installed capacity of renewable energy increases first and then decreases with the increase of the price sensitivity coefficient of traditional energy supply. Electricity demand is negatively related to electricity price in the current period,and is positively related to price in the other period. The average price of day and night is only related to the total potential demand of day and night and the total generation probability of renewable energy. The price difference between daytime and nighttime is positively related to potential electricity demand,and negatively related to the sensitivity coefficient of electricity price.

关键词： hybrid power generation carbon emission reduction power handling cost electricity price installed capacity

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hybrid PV/Wind/Diesel Based Distributed generation for an Off-Grid Rural Village in Afghanistan

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Journal of Energy and power Engineering 2017年第2期11卷 85-94页

作者： Gul Ahmad Ludin Hidehito Matayoshi Mir Sayed Shah Danish Atsushi Yona Tomonobu Senjyu Department of Electrical and Electronics Engineering University of the Ryukyus Okinawa 903-0213 Japan

Afghanistan has a tremendous resource potential of renewable energy especially solar and the wind. Therefore, utilization of these resources has a special rule for the remote areas where access to the electrical grid or secure power supply is a dream for most of the people. This paper presents a feasibility and usefulness of hybrid power generation based on PV/wind/diesel generator for an off-grid rural village that feeds the load at a rate of average 7.9 kWh/day with 1.32 kW peak load. GsT （geospatial toolkit） is used to obtain the solar and wind data of the site. Windographer software is used to analyze the wind resource data of the site. HOMER Pro software package is used to select the suitable and reliable hybrid generation system and calculate the optimal capacities and costs of the components. Through the study, it is found that this state of the art adaptation could provide vast opportunities for off-grid rural communities such as in Afghanistan where enough high penetration of renewable energy is available.

关键词： Rural village electrification hybrid power generation solar wind diesel generator.

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