scholarly journals Study and Practice of Large Heating Units Deeply Involved in Peak-Load Regulation Capacity of Power Network

Smart Grid ◽  
2014 ◽  
Vol 04 (01) ◽  
pp. 26-30
Author(s):  
春光 田
Keyword(s):  
Peak Load ◽  
Power Network ◽  
Load Regulation ◽  
Large Heating

Fault diagnosis method of peak-load-regulation steam turbine based on improved PCA-HKNN artificial neural network

2021 ◽  
pp. 1748006X2110105
Author(s):  
Yifan Wu ◽  
Wei Li ◽  
Deren Sheng ◽  
Jianhong Chen ◽  
Zitao Yu
Keyword(s):  
Neural Network ◽  
Fault Diagnosis ◽  
Steam Turbine ◽  
Power Plants ◽  
Peak Load ◽  
Clean Energy ◽  
Steam Turbines ◽  
Peak Shaving ◽  
Diagnosis Method ◽  
Load Regulation

Clean energy is now developing rapidly, especially in the United States, China, the Britain and the European Union. To ensure the stability of power production and consumption, and to give higher priority to clean energy, it is essential for large power plants to implement peak shaving operation, which means that even the 1000 MW steam turbines in large plants will undertake peak shaving tasks for a long period of time. However, with the peak load regulation, the steam turbines operating in low capacity may be much more likely to cause faults. In this paper, aiming at peak load shaving, a fault diagnosis method of steam turbine vibration has been presented. The major models, namely hierarchy-KNN model on the basis of improved principal component analysis (Improved PCA-HKNN) has been discussed in detail. Additionally, a new fault diagnosis method has been proposed. By applying the PCA improved by information entropy, the vibration and thermal original data are decomposed and classified into a finite number of characteristic parameters and factor matrices. For the peak shaving power plants, the peak load shaving state involving their methods of operation and results of vibration would be elaborated further. Combined with the data and the operation state, the HKNN model is established to carry out the fault diagnosis. Finally, the efficiency and reliability of the improved PCA-HKNN model is discussed. It’s indicated that compared with the traditional method, especially handling the large data, this model enhances the convergence speed and the anti-interference ability of the neural network, reduces the training time and diagnosis time by more than 50%, improving the reliability of the diagnosis from 76% to 97%.

scholarly journals Optimization of Minimum Power Output for Combined Heat and Power Units Considering Peak Load Regulation Ability

2017 ◽  
Vol 09 (04) ◽  
pp. 452-463
Author(s):  
Cong Liu ◽  
Deyue Men ◽  
Dan Xu ◽  
Qiang Ding ◽  
Guodong Huang ◽  
...  
Keyword(s):  
Power Output ◽  
Peak Load ◽  
Combined Heat And Power ◽  
Minimum Power ◽  
Load Regulation

scholarly journals Research and Application of New Condensing Extraction Backpressure heating technology of 330 MW unit

2020 ◽  
Vol 143 ◽  
pp. 02047
Author(s):  
Shufang Tang ◽  
Guoan Tang ◽  
Xiaohong He ◽  
Lijun Zheng ◽  
Cong Yu ◽  
...  
Keyword(s):  
Power System ◽  
Economic Benefit ◽  
Peak Load ◽  
Combined Heat And Power ◽  
Heating Capacity ◽  
Load Regulation ◽  
Generation Power ◽  
Heating Technology

This paper introduces the retrofit scheme of the New Condensing Extraction Backpressure heating technology, and the technology is recommend for use by comparing and analysing the combined heat and power system based on a 330MW unit retrofit. After improvement, the heating capacity has been Obvious improved, the generation power has been greatly reduced and the capacity of peak load regulation has been significantly improved, which can not only realize the thermoelectric decoupling, but also obtain the remarkable economic benefit.

scholarly journals Equivalent Peak Load Regulation of Nuclear Power Plant Considering Benefits of Different Power Generation Groups

2018 ◽  
Vol 152 ◽  
pp. 227-232 ◽  
Author(s):  
Feixiang Peng ◽  
Wei Zhou ◽  
Xin Sui ◽  
Shubo Hu ◽  
Hui Sun ◽  
...  
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Peak Load ◽  
Load Regulation

scholarly journals Analysis on the Problem of Blocking of the Storage Pump Caused by Peak Load Regulation of the Unit

2020 ◽  
Vol 514 ◽  
pp. 042058
Author(s):  
Ke Liu ◽  
Haichao Wang ◽  
Jinglong Liu ◽  
Fuxing Cui ◽  
Chuanjun Duan ◽  
...  
Keyword(s):  
Peak Load ◽  
Load Regulation

Research on Combined Peak Load Regulation with Hydropower, Thermal Power and Nuclear Power Plants

2014 ◽  
Vol 986-987 ◽  
pp. 465-469 ◽  
Author(s):  
Gang Wang ◽  
Xiao Dong Ma ◽  
Chao Wang ◽  
Peng Ye
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Power Grid ◽  
Thermal Power ◽  
Operation Mode ◽  
Peak Load ◽  
Generating Capacity ◽  
Load Regulation ◽  
Set Up ◽  
Research Show

Base on Nuclear Power Plant (NPP) participating in peak load regulation of power grid, this paper studies the operation mode of hydropower, thermal power and NPP in Combined Peak Load Regulation. The optimization model for Peaking depth of NPP was set up. The case based on actual power grid were calculated and analyzed, results of the research show that in combined peak load regulation of hydropower, thermal power and NPP, a reasonable peaking depth of NPP will effectively alleviate the peaking pressure of power grid, avoid start-stop of thermal power and abandoned water of hydropower, while ensuring the hydroelectric generating capacity in the low load periods, and ensure thermal power output smooth, it further reduce the operating costs, verify the effectiveness of the model.

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