scholarly journals Research on simulation and test analysis of hydraulic transient process in Jinping II Hydropower Station

2021 ◽  
Vol 248 ◽  
pp. 02068
Author(s):  
Cao Chun-jian ◽  
Fang Jie ◽  
Chen Shun-yi ◽  
Huang Jing-qian
Keyword(s):  
Power Generation ◽  
Simulation Model ◽  
Water Diversion ◽  
Hydropower Station ◽  
Generation System ◽  
Hydraulic Transient ◽  
Test Conditions ◽  
Jinping Ii Hydropower Station ◽  
Power Generation System ◽  
Large Water

The paper takes Jinping II Hydropower Station (8 × 600MW) as an example based on the internal mechanism and operating characteristics of the system, the complete simulation model of the super-long and large water diversion and power generation system has been completed finally.Besides, the method of parameter calibration and correction for the main elements of the system is proposed.By the simulation model, two typical hydraulic transient process test conditions are simulated, here the involved test conditions are as following: double load rejection and primary frequency regulation.At the same time, the calculated results are compared with the test results. The results show that the proposed simulation model can describe the dynamic response characteristic of the super-long and large water diversion and power generation system accurately.

Study on Stable Section Area of Surge Tank of Asymmetric Water Diversion and Power Generation System

2013 ◽  
Vol 753-755 ◽  
pp. 1519-1525
Author(s):  
Wen Bin Liu ◽  
Qiu Sen You ◽  
Xu Lai
Keyword(s):  
Power Generation ◽  
Critical Condition ◽  
Branch Pipe ◽  
Great Influence ◽  
Water Diversion ◽  
Computational Formula ◽  
Surge Tank ◽  
Generation System ◽  
Section Area ◽  
Power Generation System

Due to the emergence of new asymmetric Water diversion and power generation system, the traditional computational formula for Thoma stable section area has been unable to meet the design requirement. The discriminant formula for stable section of surge tank is obtained in this paper by theoretical derivation. There is a great influence on the stable area of surge tank because of the head loss between surge tank and branch pipe. Based on the definition of k-degree symmetric diversion system, the critical condition of Water diversion and power generation system is obtained. The hydraulic parameters of k-degree symmetric Water diversion and power generation system can be optimized through the critical condition formula.

Modeling of Arbitrary Power Level PV Array Based on Circuit Equivalent Mechanism

2012 ◽  
Vol 424-425 ◽  
pp. 586-591
Author(s):  
Zhang Quan Wang ◽  
You Rong Chen ◽  
Yue Ruan
Keyword(s):  
Power Generation ◽  
Solar Cell ◽  
Simulation Model ◽  
Power Level ◽  
Generation System ◽  
Arbitrary Power ◽  
Pv Array ◽  
Power Generation System ◽  
Output Characteristics ◽  
Pv Power Generation

According to the equivalent circuit of single solar cell and the V-I equation of PV cell based on physical mechanism, a simulation model of single solar cell is established. According to this model and structure feature of PV array, the Thevenin circuit equivalent transform theory is used. The control relationship between single solar cell and PV array is given. Then a simple modeling method for arbitrary power level PV array is proposed. To verify the model effectiveness, a Pspice simulation model is established. Output characteristics of the model and its feasibility in PV power generation system are simulated. Simulation results show that the output characteristics of simulation model are in good consistency with actual PV array, and the model can be effectively applied in simulation of PV power generation system. The modeling method is simple and can be used for simulation on some control algorithms of PV power generation system

Study on Automatic Control Method of Photovoltaic Power Systems

2014 ◽  
Vol 1070-1072 ◽  
pp. 52-55
Author(s):  
Hua Long Zhang ◽  
Er Hong Zhang
Keyword(s):  
Power Generation ◽  
Simulation Model ◽  
Maximum Power Point Tracking ◽  
Generation System ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Photovoltaic Power ◽  
Power Generation System ◽  
Power Point

Maximum power point tracking (MPPT) algorithm directly affect the conversion efficiency of photovoltaic power generation system independent of energy, the thesis of common strengths and weaknesses of the MPPT algorithm to summarize, the traditional method of perturbation and observation maximum power point tracking algorithm is improved and build a simulation model, the simulation model are direct and network controllers and input grid and grid-independent photovoltaic power generation system model of network simulation, and network time from both the grid conditions, and the impact of current network waveforms and grid voltage waveform analyzed. Simulation results observed with the conventional perturbation method were compared and analyzed to verify the effectiveness of the improved method.

Development of a City Type Compact Wind Power Generation System

2005 ◽  
Vol 125 (11) ◽  
pp. 1016-1021 ◽  
Author(s):  
Yoshihisa Sato ◽  
Naotsugu Yoshida ◽  
Ryuichi Shimada
Keyword(s):  
Power Generation ◽  
Wind Power ◽  
Wind Power Generation ◽  
Generation System ◽  
Power Generation System
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