ANALYSIS OF FOREST FIRE SURVEILLANCE & PREWARNING APPLICATION SYSTEM BASED ON POWER GRID GIS

2014 ◽  
Vol 1 (1) ◽  
pp. 23-28
Author(s):  
Jing Zhou ◽  
Yongqin Luo ◽  
Zhenyu Li ◽  
Chaoqun Kang
2014 ◽  
Vol 986-987 ◽  
pp. 660-663
Author(s):  
Yun Peng Zhao ◽  
Hai Bo Jiang ◽  
Zheng Qing Cheng

Aiming at small islands location limits and the established power grid characteristics, the paper analyses some practical problems to be dealt with when renewable resource is utilized. Combined with the characteristics of small islands, the paper puts forward the new mode without energy storage devices, and designs a renewable resource application system driven directly by photovoltaic devices, emphatically analyses the key technology of no energy storage mode. The new mode effectively resolves the battle neck problem of traditional off-net mode.


2019 ◽  
Vol 136 ◽  
pp. 01037
Author(s):  
Xinmin Yu ◽  
Tianrong Zhong ◽  
Xianri Wang ◽  
Kejian Nie ◽  
Jinglei Lv

Intelligent integration has been basically achieved in transmission line design in developed countries, while the current management design level in this field in China is backward and inefficient. According to the characteristics of the pilot transmission line project, it is necessary to build a transmission line 3D design application system based on the grid GIS cloud platform with the advantages of webgl cross platform and without installing plug-ins, to assist in the application of transmission line 3D design, and to develop the interface with professional line 3D design software, so as to realize the smooth operation of GIS elevation and image information and other information such as line selection and capital collection. Experiments prove that the construction of transmission line three-dimensional design application system based on grid GIS cloud platform provides a set of simple, fast, convenient and intelligent and efficient three-dimensional design support for planners and designers. It is an effective means for modern power enterprises to improve management design level and work efficiency, and has great significance in economic and social benefits.


2009 ◽  
Author(s):  
David Close ◽  
Kari Babski-Reeves ◽  
Nick Younan ◽  
Noel Schulz

2020 ◽  
pp. 57-65
Author(s):  
Eusébio Conceiçã ◽  
João Gomes ◽  
Maria Manuela Lúcio ◽  
Jorge Raposo ◽  
Domingos Xavier Viegas ◽  
...  

This paper refers to a numerical study of the hypo-thermal behaviour of a pine tree in a forest fire environment. The pine tree thermal response numerical model is based on energy balance integral equations for the tree elements and mass balance integral equation for the water in the tree. The simulation performed considers the heat conduction through the tree elements, heat exchanges by convection between the external tree surfaces and the environment, heat exchanges by radiation between the flame and the external tree surfaces and water heat loss by evaporation from the tree to the environment. The virtual three-dimensional tree model has a height of 7.5 m and is constituted by 8863 cylindrical elements representative of its trunks, branches and leaves. The fire front has 10 m long and a 2 m high. The study was conducted taking into account that the pine tree is located 5, 10 or 15 m from the fire front. For these three analyzed distances, the numerical results obtained regarding to the distribution of the view factors, mean radiant temperature and surface temperatures of the pine tree are presented. As main conclusion, it can be stated that the values of the view factor, MRT and surface temperatures of the pine tree decrease with increasing distance from the pine tree in front of fire.


Author(s):  
S. D. AMBROSE ◽  
P. SCHLESINGER ◽  
T. A. STONE
Keyword(s):  

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