bluuebunny/crossref_metadata_2025_split huggingface dataset:
Coal blending optimization model for reducing pollutant emission costs based on Support Vector Machine
Authors: Zhao Yue , Wang Guilin , Hu Qingbo , Zhou Yigang 
Published: August 2019

Abstract
Factors such as the pollutant formation, pollution emission punishment and pollutant control devices are considered to optimize the coal blending method for a 300 MW boiler unit. The support vector machine (SVM) is used to establish the pollutant formation prediction model for the coal–fired boiler. Moreover, the model built above is trained and verified based on the actual operation data. Then the genetic algorithm is applied to optimize the coal blending method with the coal price to achieve the lowest operation cost. It can be concluded from the results that the precision of the prediction model is relatively high and the ammonia consumption, NOx emission punishment, CaCO3 consumption and desulfurization water consumption have all decreased after optimization, which means both the desulfurization cost and denitration cost are reduced.
System for startup of partial nitritation - ANAMMOX - denitrification (PNAD) reaction
Authors: Li Ming , Wang Yuefeng , Qin Zhe , Tian Zaifeng , Luan Yongqing , Lu Da 
Published: August 2019

Abstract
A partial nitritation-anaerobic ammonium oxidation (ANAMMOX)-denitrification (PNAD) process was activated to provide the basis and experience for engineering. A stirred up-flow reactor with surface continuous oxygen-limited aeration was used to realize partial nitritation by controlling the dissolved oxygen (DO) (0.4-0.5mg/l) of the reactor. In this study, an ASBR reactor was inoculated with ANAMMOX activated sludge with denitrification properties. After 98 days of activity recovery, the total nitrogen removal rate reached 90%. The reactor was run to the 194th day, with the total nitrogen removal efficiency reaching 95% after increasing influent nitrogen concentration on the 99th day, and the two reactors were combined in series. Up to the 212th day, the influent NH4
+-N was 253.51mg / (l·d), and the effluent NH4
+-N, NO2
−-N and NO3
−-N concentration were 1.67 mg / (l·d), 1.18 mg / (l·d) and 5.68mg / (l·d) respectively. In addition the activated sludge of two reactors was also identified by 16S rRNA
Operation optimization of SCR system based on denitration efficiency prediction model
Authors: Wang Guilin , Zhou Yigang , Zhao Yue , Wang Sen 
Published: August 2019

Abstract
In this paper, models for NOx emission prediction and denitration costs are built with support vector machine. The effects of the factors such as SCR inlet NOx content, unit load, oxygen content of exhaust gas, ammonia injection rate, air distribution condition, and coal type on NOx reduction are discussed. The denitration costs under different working conditions are calculated. The ammonia injection rate is optimized with genetic algorithm. It can be shown that the actual ammonia injection rate is 1%-3.5% lower than the optimal value.
Improvement of the air-sea flux parameterization scheme in the ocean circulation model
Authors: Liu Jingdong , Shi Jian , Zhang Wenjing , Feng Guanyan 
Published: August 2019

Abstract
COARE (Coupled Ocean-Atmosphere Response Experiment) algorithm is the more advanced algorithm, calculating the air-sea flux. COARE 3.0 is the latest version. In this paper, the COARE 3.0 bulk sea-air flux parameterization scheme is introduced into the SBPOM model. Compared the simulated sea surface temperature (SST) of the SBPOM ocean model with COARE 3.0 and without COARE 3.0 in the areas near equator, and analysed the reasons for the differences in the simulated SST. The results showed that the COARE 3.0 bulk air-sea flux parameterization scheme is good in the SBPOM ocean model. The simulation accuracy of the SBPOM ocean model in the areas near equator has been improved after the COARE 3.0 bulk sea-air flux parameterization scheme was introduced, and the simulation error of most areas was within 1°C, which was mainly due to the accuracy of the calculation of momentum flux improved by COARE 3.0 bulk sea-air flux parameterization scheme.
Arsenic pollution status and repair technology: an overview
Authors: Bo Yan , yang Wei 
Published: August 2019

Abstract
The article focuses on the status quo of drinking water, groundwater and soil arsenic pollution at home and abroad, and expounds the harm of chronic arsenic poisoning and acute arsenic poisoning on human skin, respiratory system and nervous system. The leaching technology, solidification stabilization technology, physical repair technology and its effects of arsenic-contaminated soil remediation were introduced selectively, and the nanotechnology repair arsenic pollution was briefly introduced.
Environmental Assessment Model Based on the Back Propagation Neural Network
Authors: Zhou Dengli 
Published: August 2019

Abstract
With the continuous development of economy and society, the problem of environmental pollution is becoming more and more serious. However, people’s demand for a better environment is increasing. Under this background, it becomes particularly important to effectively evaluate the quality of the environment. So we use the Back Propagation Neural Network(BPNN) to establish a weight model. The model mainly includes Driving force, Pressure, Status, Influences, Response indicators and has strong practicability. Subsequently, we examined the impact of land development projects on the environment and conducted an analysis of land development projects taking into account environmental costs. Finally, we use our model to evaluate the Three North Shelter Forest project. Through the evaluation, we can find that the project has greatly improved the local ecological environment, making it a great project. To sum up, the model we have established can effectively evaluate the quality of ecological balance and has certain practical guiding significance.
Environmental Greening And Tree Health Maintenance Based on Color Histogram
Authors: Xie Junlin , Wang Ruiping , Ma Shanpeng , Han Xu , Yu Qirui , Yang Huijun , Wang Xin 
Published: August 2019

Abstract
Due to man-made damage, plant diseases and insect pests, environmental greening, ecological environment and other reasons, ancient and famous trees have been severely damaged. The protection of ancient trees requires diagnosis of their health and biological and chemical treatment measures. Aiming at the inconvenience, high cost and low degree of automation of manual methods for health diagnosis of ancient trees, the solution and overall architecture of a tree health diagnosis system based on OpenCV and genetic algorithm are analyzed and designed. Firstly, the leaf image mode is trained, and the color histogram is used to distinguish the leaf density and color difference between different individuals, and the fitting index is used to obtain more accurate diagnostic classification standards. Then, the matching value is calculated by genetic algorithm training through the H average value in HSVHSV and the H average value of healthy ancient trees in the histogram to obtain the matching grade. Then, the tree image is read, artificial segmentation is carried out to obtain the quasi-healthy crown score, weighted summation is carried out to obtain the leaf score, and the health grade is separated according to the ratio. Finally, the two are weighted to obtain the final health grade. The experimental results show that the system can accurately and effectively distinguish different leaf health grades according to the difference of leaf color and density, and provide quantitative data for health diagnosis research of ancient and famous trees.
A Novel Modified Electromagnetism-like Algorithm for Solving Constrained Optimization Problem
Authors: Cao Wenming , Fang Jianwen , Huang Gan 
Published: August 2019

Abstract
The original Electromagnetism-like mechanism (EM) is a meta-heuristic algorithm utilizing an attraction-repulsion mechanism (called as force F) to move sample points towards optimality in global optimization problems. To solve the potential problem of stagnation happening in the original algorithm, new searching procedures were proposed in modified algorithm to determine the next search direction and step length of points in the paper. Compared to the original algorithm, tri-factors of the best historical visited positions of each point, best point and total force F were considered in the improved searching procedures. Moreover, the feasibility and dominance (FAD) rules were incorporated to extend the proposed algorithm to solve constrained optimization problem. Finally, Preliminary experiments verified the effectiveness of the proposed algorithm.
Analysis and Treatment of Shutdown Due to Bearing Vibration Towards Ultra-supercritical 660MW Turbine
Authors: Li Wanjun , Li Xiaoxia , Niu Qingliang , Huang Tianqi , Zhang Deke , Dong Yang 
Published: August 2019

Abstract
During the normal operation of an ultra-supercritical 660MW steam turbine in a power plant, the temperature of low-pressure shaft seal steam inlet gradually increases, and the vibration of steam turbine bearing suddenly increases, leading to the steam turbine shutdown. The diagnosis and troubleshooting of major vibration faults of steam turbine bearing are carried out, and the causes of faults are accurately analysed through collecting field data, checking maintenance records and disassembling inspection of relevant equipment. Taking corresponding effective measures to eliminate the potential equipment safety hazard.
Abnormal shutdown analysis and treatment of sub-critical 300MW unit due to low EH oil pressure
Authors: Li Wanjun , Li Xiaoxia , Niu Qingliang , Huang Tianqi 
Published: August 2019

Abstract
When the sub-critical 300MW steam turbine generator set of a power plant operates normally, the pressure of EH oil system gradually decreases when the B EH oil pump operates, then switching to A EH oil pump, the pressure of EH oil system rises and then gradually decreases to the protection action, and the unit shutdown. Through on-site inspection and inspection of maintenance records, it was found that the EH oil particles seriously exceeded the standard. The leakage fault of the absorbent in the regenerated filter element of the external oil filter was diagnosed and investigated. After replacing the EH oil pump inlet and outlet filters, the inlet filter of the main valve and the regulating valve oil motor control block, the EH oil system was flushed with a large flow of EH oil and replaced with a new EH oil, and other effective measures were taken to eliminate the potential safety hazards in equipment operation.
Shutdown analysis and treatment of 150MW steam extraction heating unit due to low oil fuel level
Authors: Li Wanjun , Li Xiaoxia , Niu Qingliang , Huang Tianqi 
Published: August 2019

Abstract
When the 150MW steam turbine generator set of a power plant operates normally, the pressure of EH oil system gradually decreases and the fuel level drops in the tank, then switching to standby EH oil pump, the pressure of EH oil system continues to drop to the protection action, and the unit shutdown. Through on-site inspection and inspection of maintenance records, it was found that there was serious oil leakage at the oil outlet of mobile oil filter and the oil outlet pipe of EH oil cooling pump. The cause of the fault was analyzed accurately. Effective measures such as changing the connection mode between mobile oil filter and EH oilto eliminate the potential safety hazards in equipment operation.
Analysis and treatment of shutdown due to high condenser pressure towards ultra-supercritical 660MW turbine
Authors: Li Wanjun , Li Xiaoxia 
Published: August 2019

Abstract
During the normal operation of an ultra-supercritical 660MW steam turbine in a power plant, the pressure of condenser gradually increases, then reduced electrical load, condenser pressure continued to rise to the protection action, the unit shutdown. Through on-site inspection and inspection of the operation curve, it was found that after the water level of the collecting water tank of the boiler’s starting hydrophobic system was zero, the B hydrophobic pump was still closed and the outlet electric door was not closed. The fault of the B hydrophobic pump’s trip relay was diagnosed and investigated, and the cause of the fault was accurately analyzed. After replacing the tripping relay and adding the tripping logic of the drain pump, the unit can be restarted and run normally.
Discussion on Flexibilization Reconstruction Plan of a 300MW Unit’s Pulverizing System in Northeast China
Authors: Xue Fangming , Su Jingcheng , Sun Yiqing , Liu Xiuru 
Published: August 2019

Abstract
In order to cope with the problem of renewable energy consumption, power plants in Northeast China need to carry out corresponding flexibility transformation to improve the peak peaking capacity of the unit. Among them, the transformation of the milling system is a key and difficult point in the whole process of transformation. This paper analyzes the possible problems caused by the transformation and proposes solutions by analyzing the 30% TRL milling system.
Study on analysis of acid number of transformer oil by temperature titration
Authors: Chen Suhong , Zhu Yi , Jia Yuling , Yun Yuxin , Han Zhijun , Feng Gao , Zhang Lei , Pang Xiangkun 
Published: August 2019

Abstract
Important test methods for acid number of oil products were introduced, and their characters, difference and selection Principle were described. And the temperature titration method was used to determine the acid number of transformer oil. Meanwhile, several major factors that may affect the outcome were discussed.
Slag Cooler Waste Heat Supply System and Energy Saving Analysis
Authors: Zhu Lingkai , Shang Panfeng , Zheng Wei , Guo Ying , Han Yue , Guo Junshan , Ding Junqi , Lao Jinxu , Zhang Yanpeng , Liu Jun 
Published: August 2019

Abstract
In view of the drawbacks of the traditional scheme of recovering residual heat from slag cooler to condensate water system, this paper proposes a new scheme for the utilization of residual heat from slag cooler of circulating fluidized bed heating units. During heating period, a return water from heat network is drawn from the main return water pipeline of heat network as the cooling water source of slag cooler. The residual heat of slag cooler is directly used for heating, and the residual heat of slag cooler will be recovered to condensate water system in non-heating period, in order to realize the free switching between the two schemes, valves are installed in the pipeline. The energy-saving effects of the two schemes are analyzed, and the results show that the new scheme is more energy-saving.
Research on Power Behavior Analysis Based on Clustering
Authors: Li Xunjia , Zhang Tao 
Published: August 2019

Abstract
This research is based on data clustering to analyze power users’ electricity consumption behavior, and analyzes the load curve to obtain the users’ electricity consumption characteristics and classify users according to the characteristics of electricity consumption behavior. It is of far-reaching significance to the power industry and socio-economic development. This paper introduces the principle and flow of the main clustering algorithm K-means, fuzzy clustering and neural network clustering algorithm. The data preprocessing method is given. The clustering algorithm and the optimal clustering number are determined by defining the clustering volatility and clustering accuracy index. Then the power consumption behavior of the user is analyzed through the load curves and characteristic parameters obtained through clustering.
Transformer winding hot spot temperature prediction based on ε -fuzzy tree
Authors: Zhang Yue , Shan Lianfei , Yu Jianming , Lv Hongwei 
Published: August 2019

Abstract
Transformer hot spot temperature is closely related to its operating life, which plays a key role in transformer thermal fault prevention and operational status monitoring. In order to effectively improve the prediction accuracy of the transformer winding hot spot temperature, a method based on ε-fuzzy tree (ε-FT) for predicting winding hot spot temperature is proposed. Taking the 220kV transformer of a substation as the research object, the input and output characteristic variables are extracted through the analysis of relevant mechanisms, which is applied to establish ε-FT model of the transformer winding hot spot temperature, and the proposed method is compared with the other methods. Subsequently, the noise and outliers are added to the modeling data to verify the robustness of the proposed method. The results show that the method can accurately predict the hot spot temperature and resist the bad data in the modeled samples, which has strong generalization ability and robustness.
Effect of Pb-Te-Si-O glasses on Ag thick-film contact in crystalline silicon solar cells
Authors: Qin Jun , Zhang Weijun , Yang Jinchao , Du Guangbao , Cai Xinan 
Published: August 2019

Abstract
In the paper, the influences of Pb-Te-Si-O (PTSO) glasses on Ag thick-film contact in crystalline silicon solar cells were investigated. Thermal properties of PTSO glasses and the dissolution process of Ag were studied. The formation of a new low-softening-temperature glassy-phase, induced by the crystallization of PTSO-1 glass, accelerated the dissolution of Ag at lower temperature. When silver paste was sintered, high-viscosity PTS-1 glass could flow to the surface of the cell and etch SiNx ARC layer at relative high temperature and the time for etching through SiNx ARC layer was shorter. Viscosity-temperature properties of PTSO glass has played a great role in the microstructures of contact finger and Ag/Si interface and have a great effect on the quality of Ag/Si contact and electrical properties of cells by affecting the sintering process of Ag, the etching behavior of interfacial glass with SiNx and Si, and the size and size distribution of Ag crystallites grown into the Si emitter at the position of inverted-pyramid etching pits.
Optimization of Distribution Network Construction Based on GIS System
Authors: Tian Qin , Wan Zixin , Zou Yunpeng , Hang Chenghao 
Published: August 2019

Abstract
With the rapid development of China’s economy and science and technology, people’s daily life and scientific research work demand more and more electricity. The traditional distribution network structure and load can hardly meet the actual demand. Therefore, it is very necessary to construct a more stable distribution network system in accordance with the actual demand for electricity. This paper mainly introduces the application of GIS system in power distribution network planning and design, and realizes the optimization and upgrading of power distribution network in coordination with the geographic information of the construction site, so as to meet the increasing demand for electricity.
Research on Network Traffic Anomaly Detection of Source-Network-Load Industrial Control System Based on GRU-OCSVM
Authors: Huo Xuesong , Wu Kehe , Miao Weiwei , Wang Liming , He Hui , Su Dawei 
Published: August 2019

Abstract
With the large number of distributed generators and diverse loads connected to industrial control systems, there are more and more interactions among power supply, power grid and load. Any network link attack in the source network will affect the security of the industrial control system, resulting in economic loss of the industrial control system. Therefore, it is very important to study the network attacks against the source-network-load industrial control system. Aiming at the current insufficient situation of network traffic anomaly detection in the source-network-load industrial control system, this paper analysed the composition and flow characteristics of the source-network-load system, studied the scheme of network traffic anomaly detection of the source-network-load system, and proposed a network traffic anomaly detection algorithm based on GRU-OCSVM. The time characteristics of the traffic sequence were extracted by the GRU and input into OCSVM for traffic anomaly detection. Finally, the original network traffic of the source-network-load system was collected to construct anomaly detection data set for simulation experiment. The experimental results showed that the proposed method had high detection rate and low false positive rate, which can meet the needs of network traffic anomaly detection in the source-network-load system.
Study of China’s biomass power generation technology
Authors: Li Rui 
Published: August 2019

Abstract
With the rapid growth of the population and the continuous advancement of the times, the problem of energy shortage has become a problem that needs to be faced together in the world. To make use of new technologies to achieve rational use of energy has become a topic faced by researchers in various countries. Biomass power generation technology has been effective in mitigating such problems. Biomass power generation is one of the new energy generation technologies, with the advantages of low carbon emissions, environmental protection and sustainable development of new energy sources. Biomass power generation has attracted the attention of countries all over the world because of its good economic and social benefits. Based on this, this paper describes the concept and characteristics of biomass energy and the technologies that biomass energy is applied in power generation.
Design and Feasibility Analysis of Compressed Air Aquifer Energy Storage System
Authors: Zhu Mingyu 
Published: August 2019

Abstract
Compressed air energy storage system is developing rapidly as the most promising energy storage technology, and gas storage device is one of the main components of compressed air energy storage system. Aquifer compressed air energy storage can break the dependence of traditional compressed air energy storage on geological conditions such as large rock caves, and can realize large scale storage of compressed air. In this paper, the development and progress of compressed air energy storage in aquifer are summarized firstly. Then, taking 3.5 Mw energy storage scale as an example, the energy storage model of underground aquifer with buried depth of 800m in horizontal stratum is established by using numerical simulation method. The formation of the initial airbag after gas injection and the cycle times of the pressure system during the system cycle are analyzed. The experimental results show that after a complete cycle, the pressure change in the formation is small; as the cycle continues, the effective gas phase volume in the formation for the energy storage release cycle is slowly reduced.The aquifer has wide distribution and good sealing. It is feasible to store compressed air as a gas storage. The corresponding system design should be carried out according to the actual geological conditions.
Experimental Analysis of Low-rank Fuel Drying Characteristics
Authors: Qiao Lei , Wang Xiaoxiao , Sun Haijun , Fang Yuan , Ye Xiaoli 
Published: August 2019

Abstract
Drying technology of low rank coal, which is the leading technology of low rank coal thermal chemical processing, plays an important role for the efficient use of low rank coal. It has made clear the influence factors of low rank coal drying process and effect of related factors by studying low rank coal occurrence form of moisture and the drying mechanism. In the paper, it has carried on the experimental study in drying characteristic under the condition of fluidized drying in the tube furnace with YuZhou Long-flame coal as the research object, and obtained the correlation curve of the particle size, fluidization velocity, drying temperature, drying rate and the influence factors. At last, according to the experiment and the system economy, the drying process parameters are optimized: the drying temperature is 210 °C, the fluidization air velocity is 1.6 m/s, the drying time is 5 minutes.