The objective of the paper is to develop a novel co-simulation analytic interface of aerodynamics, mechanism dynamics and control system dynamics for 2MW wind turbines. Therefore, three software, such as FAST, ADAMS, and MATLAB/ SIMULINK, are integrated into one interface to combine with aerodynamic,...

Based on the turbulence model, the volatility of real-time wind speed is discussed, which is composed of the average component and fluctuant component. By deriving the probability density function of fluctuant wind speed and investigating the probability density curve, we decompose the fluctuant wind...

In order to ensure the good fracturing effect of horizontal well in the Sulige gas field, block SuX of Sulige gas field was used as an example, the typical horizontal wells of different fracturing mode were selected. According to the different reservoir conditions, the fracturing mode of horizontal well...

The heat exchanger element H-type finned tube has a high enhancement of heat transfer and excellent self-cleaning property and has evident effect in the boiler renovation, especially in the field of flue gas waste heat recovery. In this paper, the heat transfer and resistance characteristics of H-type...

Substation Automation System (SAS) performance has been gained great improvements by implementing the high data rate process bus based on IEC 61850-9-2LE. However, these improvements need to be fully assessed within different circumstances before the scheme can be implemented to real SAS. This paper...

Daqinggou molybdenum deposit locates in daqinggou miaozi area luanchuan county, Henan province. It is considered to be a favorable metallogenic area because of the intense tectonic movement and frequent magmatic activities. This molybdenum deposit is a medium-sized deposit and the ore bodies are strictly...

It is unavoidable of the complex coexistence of gas, water and oil phase in the underground gas storage which is built after the late water flooding of the high water cut sandstone reservoir. This paper does experiments of setting and unsetting pressure of multicycle injection-production experiment using...

Using magnetically coupled resonators coils in a strongly coupled near field was suggested for wireless power transfer. A circuit model is presented along with a derivation of key system concepts such as frequency splitting, the maximum operating distance (critical coupling). Here, a simple circuit topological...

Tight gas, along with shale gas and coalbed methane, is known as top three unconventional gases. Tight gas development has strategically importance in the development of natural gas and energy structure adjustment in China. It should be considered in priority in the exploration and exploitation of unconventional...

The research paper is going to discuss about the development of the city gas supply system and the natural gas market in China and find out how does the development of city gas supply system and natural gas market can influence the environment of China. Nowadays, China is concerning the environmental...

In this paper, problems in coal handling system and practice of Chengjiao coal preparation plant is tested and analyzed in detail, and I have put forward solutions for problems in coal handling system. The best production program of Chengjiao coal preparation plant was chose through program comparing....

At present, there are many methods to improve the compensation performance of active power filter (APF). However, to improve the reliability of APF, dead-time between two IGBT switches in the same bridge must be set large enough to guarantee the IGBT operating safely, which will impact the output performance...

This paper applies case-based reasoning method to emergency decision-making research field, and mainly researches case representation and case retrieval method. At first, this paper analyzes character of coal mine emergency rescue work, and describes the coal mine accident case using frame representation....

As the stable operation in coal production is threaten by many kinds of safety accidents seriously, doing research on emergency knowledge in the field of coal mine safety production can provide several for emergency decision, which is of great importance. This paper designed and developed coal mine emergency...

PH gas field, which located in East China Offshore, has the characteristic: Prematurely Senile Appearance. That means it is currently in the middle period of development, but has many features of the later period of the gas field’s life. In order to compensate the reduction of gas production, the development...

With the capacity of integrated wind farm increasing, the reliability issues of power systems could not be ignored. This paper proposes an evaluation method for power system operation state based on elastic back-propagation neural network through the data of the phasor measurement unit. The effectiveness...

At present, the physical phenomenon of injection profile plays an important role to improve oil-driving efficiency and oil recovery. A mathematical method is studied and applied to solve related production problems based on Buckley–Leverett theory. In addition, some different injection profile is shown...

The performance In GaN/GaN multiple quantum wells solar cells on a patterned sapphire substrate (PSS) was investigated. Compare to the solar on a planar substrate, the In GaN/GaN multiple quantum wells (MQWs) solar cell grown on PSS exhibited a higher performance, with the conversion efficiency ( ) rising...

In order to decrease the damage of the explosive initiator under high-g loading, a PTFE tube was designed as energy absorber and used in the initiator. For this purpose, the split Hopkinson pressure bar was firstly performed to test the dynamic mechanical parameters of PTFE material, which were later...

Energy-loss analysis refers to analyzing influence of some parameters deviated from targeted working condition on unit thermal economy during unit operation [1–3]. Coal consumption analysis aiming at thermal power unit controllable parameter changes aims at determining influence extent of controllable...

With the uncertainty and variability of wind, Wind turbines interconnection will change the original structure of the system and influence the power flow, the network loss and voltage stability of power grid. Therefore, a fast, practical calculation methods of the grid with wind power are in urgent need...