On the Way to Integrate Increasing Shares of Variable Renewables in China: Activating Nearby Accommodation Potential under New Provincial Renewable Portfolio Standard

More than 1.2 billion kW wind and solar power generation will be integrated in China by 2030. The new provincial renewable portfolio standard, officially implemented in 2020, establishes an efficient bridge between rapid capacity growth and limited accommodation capability. A data-driven prospect analysis framework was proposed to evaluate the activated potential under two kinds of nearby accommodation approaches and to explore the completion prospect of this new obligated quota from provincial levels. Empirical results illustrate diverse prospects across regions. Particularly, it is hard for two kinds of provinces to complete their obligated quotas merely via the single nearby accommodation approach: The first one is close to renewable energy resources but lacks flexible peak regulation capability in Northeast and Northwest China, and the other is close to the nationwide load center but lacks nearby integration from renewables in Southeast, North, and Middle China. Therefore, the pathway for the former is to activate more provincial accommodation potential either via releasing system flexibility or by substituting generation right, and the pathway for the latter is to introduce trans-regional or trans-provincial accommodation and import more renewable energy power.

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Perfomance evaluation of a direct injection engine using different blends of soybean (Glycine max) methyl biodiesel

Engenharia Agrícola ◽

10.1590/s0100-69162011000500009 ◽

2011 ◽

Vol 31 (5) ◽

pp. 916-922 ◽

Cited By ~ 4

Author(s):

Gustavo H. Nietiedt ◽

José F. Schlosser ◽

Alexandre Russini ◽

Ulisses G. Frantz ◽

Rodrigo L. Ribas

Keyword(s):

Renewable Energy ◽

Glycine Max ◽

Fuel Consumption ◽

Eddy Current ◽

Diesel Fuel ◽

Direct Injection ◽

Engine Performance ◽

The Other ◽

Energy Resources ◽

Renewable Energy Resources

Diesel fuel is used widely in Brazil and worldwide. On the other hand, the growing environmental awareness leads to a greater demand for renewable energy resources. Thus, this study aimed to evaluate the use of different blends of soybean (Glycine max) methyl biodiesel and diesel in an ignition compression engine with direct injection fuel. The tests were performed on an electric eddy current dynamometer, using the blends B10, B50 and B100, with 10; 50 e 100% of biodiesel, respectively, in comparison to the commercial diesel B5, with 5% of biodiesel added to the fossil diesel. The engine performance was analyzed trough the tractor power take off (PTO) for each fuel, and the best results obtained for the power and the specific fuel consumption, respectively, were: B5 (44.62 kW; 234.87 g kW-1 h-1); B10 (44.73 kW; 233.78 g kW-1 h-1); B50 (44.11 kW; 250.40 g kW-1 h-1) e B100 (43.40 kW; 263.63 g kW-1 h-1). The best performance occurred with the use of B5 and B10 fuel, without significant differences between these blends. The B100 fuel showed significant differences compared to the other fuels.

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Renewable Energy Resources for Better Economics and Sustainable Living in Rural and Desert Areas

Journal of Business and Economics ◽

10.15341/jbe(2155-7950)/12.10.2019/004 ◽

2019 ◽

Vol 10 (12) ◽

pp. 1165-1171

Author(s):

Karl Gatterer ◽

◽

Salah Arafa ◽

Keyword(s):

Renewable Energy ◽

Poverty Reduction ◽

Energy Resources ◽

Green Economy ◽

Renewable Energy Resources ◽

Economic Activities ◽

Energy Materials ◽

Sustainable Living ◽

Sustainable Community Development ◽

Access To Knowledge

Reliable and affordable energy is the key for the socio-economic development in rural and desert communities worldwide. While energy can be used for consumption purposes such as Lighting, Access to Information, Comfort and Entertainment, productive use of renewable energy is the key enabler for SMEs and Economy to grow. The paper examines the complex interactions among Energy, Materials, Water, Food, Building, Employment and Environment. It also discusses the implementation of renewable energy technologies to overcome some of barriers faced by rural villages and desert communities. It shows some of the special applications and approaches used over the past few decades in energy conversion, consumption and conservation to achieve poverty reduction, social justice and sustainable development. Field experiences in Basaisa projects, Egypt showed that open free dialogues with all stakeholders, site-specific education and training, appropriate local financing systems and access to knowledge are key-elements and essential factors for achieving green economy and sustainable community development. The coming decade will see a continued expansion of knowledge about renewable energy resources and its useful applications as systems friendly to the environment and as tools for economic activities, sustainable living and growth in rural and desert communities.

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Management of Renewable Energy Resources in India

International Journal of Scientific Research ◽

10.15373/22778179/nov2013/40 ◽

2012 ◽

Vol 2 (11) ◽

pp. 121-124

Author(s):

Savitha C Savitha C ◽

◽

Dr. S. Mahendrakumar Dr. S. Mahendrakumar

Keyword(s):

Renewable Energy ◽

Energy Resources ◽

Renewable Energy Resources

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THE ANALYSIS OF OPERATION MODES OF ENERGY STORES IN AUTONOMOUS HYBRID POWER PLANTS WITH RENEWABLE ENERGY RESOURCES

Alternative Energy and Ecology (ISJAEE) ◽

10.15518/isjaee.2018.13-15.055-067 ◽

2018 ◽

pp. 55-67

Author(s):

S. G. Obukhov ◽

I. A. Plotnikov ◽

V. G. Masolov

Keyword(s):

Renewable Energy ◽

Power Systems ◽

Low Frequency ◽

Rechargeable Batteries ◽

Energy Resources ◽

Renewable Energy Resources ◽

Hybrid Power ◽

Operation Modes ◽

Energy Stores ◽

Energy Store

The paper presents the results of the comparative analysis of operation modes of an autonomous hybrid power complex with/without the energy store. We offere the technique which defines the power characteristics of the main components of a hybrid power complex: the consumers of the electric power, wind power and photo-electric installations (the last ones have been constructed). The paper establishes that, in order to compensate the seasonal fluctuations of power in autonomous power systems with renewable energy resources, the accumulative devices are required, with a capacity of tens of MWh including devices that are capable to provide energy storage with duration about half a year. This allows abandoning the storage devices for smoothing the seasonal fluctuations in the energy balance.The analysis of operation modes of energy stores has shown that for a stock and delivery of energy on time intervals, lasting several hours, the accumulative devices with rather high values of charging and digit power aren't required. It allows using the lead-acid rechargeable batteries of the deep category for smoothing the daily peaks of surplus and a capacity shortage. Moreover, the analysis of operation modes of energy stores as a part of the hybrid complexes has demonstrated that in charging/digit currents of the energy store the low-frequency and high-frequency pulsations of big amplitude caused by changes of size of output power of the renewable power installations and loading are inevitable. If low-frequency pulsations (the period of tens of minutes) can partially be damped due to the restriction of size of the maximum charging current of rechargeable batteries, then it is essentially impossible to eliminate high-frequency pulsations (the period of tens of seconds) in the power systems with the only store of energy. The paper finds out that the combined energy store having characteristics of the accumulator in the modes of receiving and delivery of power on daily time intervals, and at the same time having properties of the supercondenser in the modes of reception and return of impulses of power on second intervals of time is best suited to requirements of the autonomous power complexes with renewable energy resources.

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Use of data science in the renewable energy resources

Zbornik radova pisanih za 5. Međunarodnu konferenciju o obnovljivim izvorima električne energije ◽

10.24094/mkoiee.017.5.1.263 ◽

2017 ◽

Author(s):

Predrag Stolić ◽

◽

Danijela Milošević ◽

Zoran Stević ◽

◽

...

Keyword(s):

Renewable Energy ◽

Data Science ◽

Energy Resources ◽

Renewable Energy Resources ◽

Use Of Data

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Assessment of bioenergy development potential in agricultural enterprises

Regional Economy ◽

10.36818/1562-0905-2020-1-18 ◽

2020 ◽

pp. 165-171

Author(s):

Iryna Hryhoruk

Keyword(s):

Renewable Energy ◽

Large Scale ◽

Agricultural Waste ◽

General Structure ◽

Geographical Location ◽

Economic Assessment ◽

Energy Resources ◽

Industrial Complex ◽

Renewable Energy Resources ◽

Energy Potential

Exhaustion of traditional energy resources, their uneven geographical location, and catastrophic changes in the environment necessitate the transition to renewable energy resources. Moreover, Ukraine's economy is critically dependent on energy exports, and in some cases, the dependence is not only economic but also political, which in itself poses a threat to national security. One of the ways to solve this problem is the large-scale introduction and use of renewable energy resources, bioenergy in particular. The article summarizes and offers methods for assessing the energy potential of agriculture. In our country, a significant amount of biomass is produced every year, which remains unused. A significant part is disposed of due to incineration, which significantly harms the environment and does not allow earning additional funds. It is investigated that the bioenergy potential of agriculture depends on the geographical distribution and varies in each region of Ukraine. Studies have shown that as of 2019 the smallest share in the total amount of conventional fuel that can be obtained from agricultural waste and products suitable for energy production accounts for Zakarpattya region - 172.5 thousand tons. (0.5% of the total) and Chernivtsi region - 291.3 thousand tons. (0.9%). Poltava region has the greatest potential - 2652.2 thousand tons. (7.8%) and Vinnytsia - 2623.7 thousand tons. (7.7%). It should be noted that the use of the energy potential of biomass in Ukraine can be called unsatisfactory. The share of biomass in the provision of primary energy consumption is very small. For bioenergy to occupy its niche in the general structure of the agro-industrial complex, it is necessary to develop mechanisms for its stimulation. In addition, an effective strategy for the development of the bioenergy sector of agriculture is needed. The article considers the general energy potential of agriculture, its indicative structure. The analysis is also made in terms of areas. In addition, an economic assessment of the possible use of existing potential is identified.

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