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Energy Engineering 2023年第10期120卷 2287-2306页

作者： Deng Lu Xujun Lang Bo Yang Ziyang Li Hang Geng Power Grid Design and Research Institute Shandong Electric Power Engineering Consulting Institute Co.Ltd.Jinan250012China School of Electrical Engineering Shandong UniversityJinan250061China

The four-circuit parallel line on the same tower effectively solves the problems faced by the line reconstruction and construction under the condition of the increasing shortage of transmission *** the conductor and phase sequence arrangement of multiple transmission lines is conducive to improving electromagnetic and electrostatic coupling caused by electromagnetic *** paper uses the ATP-EMTP simulation software to build a 500 kV multi-circuit transmission line on the same *** stimulates the induced voltage and current values of different line lengths,tower spacing,vertical and horizontal spacing between different circuits,phase sequence arrangement,and nominal tower ***,use the BP neural network optimized by a genetic algorithm to predict the induced voltage and current under the unknown conductor and phase sequence ***,based on multi-objective particle swarm algorithm to construct the optimization model of conductor arrangement scheme of overhead transmission line,combined with electromagnetic environment control index,determine the optimal conductor arrangement scheme by the size of particle fitness function,a significant reduction in induced voltages and currents between transmission lines and the four-circuit conductor layout scheme meeting the requirements of the electromagnetic environment is obtained,which provides a reference for the tower design of the transmission station project.

关键词： Spatial arrangement phase sequence arrangement genetic algorithm BP neural network multi-objective particle swarm algorithm

Understanding the influencing factors and evolving trends of the Yellow River Water-Sediment Regulation System from a system perspective

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Frontiers of Engineering Management 2024年第3期11卷 528-541页

作者： Zhiwei CAO Yuansheng ZHANG Huanfa CHEN Chaoqun LI Yuan LUO Yellow River Engineering consulting Co ltd Zhengzhou 450000China North China University of Water Resources and Electric Power ZhengzhouChina University College London LondonUK

Understanding the influencing factors and the evolving trends of the Water-Sediment Regulation System(WSRS)is vital for the protection and management of the Yellow *** studies on WSRS have been limited in focus and have not fully addressed the complete engineering control system of the *** study takes a holistic view,treating sediment management in the Yellow River as a dynamic and ever-evolving complex *** merges concepts from system science,information theory,and dissipative structure with practical efforts in sediment engineering *** key findings of this study are as follows:between 1990 and 2019,the average Yellow River Sediment Regulation Index(YSRI)was 55.99,with the lowest being 50.26 in 1990 and the highest being 61.48 in 2019;the result indicates that the WSRS activity decreased,yet it fluctuated,gradually approaching the critical threshold of a dissipative structure.

关键词： Yellow River Water-Sediment Regulation System Yellow River Sediment Regulation Index system perspective sustainable management.

Study on the adaptability of block-rock embankment in permafrost regions

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Research in Cold and Arid Regions 2017年第4期9卷 412-419页

作者： YuChi Liu ZhiGang Song No.1 Middle School Jilin Taiyuan Design Institute China Railway Engineering Consulting Group Co. Ltd.

As an effective solution for protecting the underlying permafrost and preventing roadway damages, the block-rock embankment(BRE) has been widely used on the Qinghai–Tibet Railway, Qinghai–Tibet Highway, and Ching–Hong Road;and it will be promoted for other roadways in the future. To evaluate the adaptability of BRE, the catastrophe-progression method was adopted for the evaluation. By analyzing the factors affecting the stability of BRE and utilizing engineering experience, we were able to establish the mathematical model and divide the adaptability of BRE into five grades. After the verifying analysis of 28 practical engineering examples, the evaluation results are broadly in line with practical application effects. Therefore, the adaptability of BRE can be evaluated and predicted more accurately with this evaluation model.

关键词： permafrost regions block-rock embankment adaptability catastrophe-progression method evaluation index system

Wireless Communication Networks' Planning in Underdeveloped Countries

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International Journal of Plant Engineering and Management 2012年第4期17卷 238-254页

作者： XU Rui Shanghai Posts and Telecommunications Designing consulting Institute Co.ltd

The planning of wireless communication networks in underdeveloped countries is studied for landline telephone, fixed broadband wireless access and PLMN systems via investigation and discussion of the LDC networks＇ characteristic, technology selection, deployment consideration, network configuring, civil work evaluation and investment estimation. An example is embedded all through providing a general

关键词： LDCs' network planning wireless local loop broadband wireless access public land mobilenetwork

Difficult Time Passed with A Good Market Prospect Coming in the Future--Review in 2012 and Prospect in 2013 of Chinese Passenger Car Replacement Tire Retail Market

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中国橡胶 2013年第8期29卷 15-18页

作者： Liu Xuening GfK Market consulting (China) Co. Ltd.

In 2012,the tire market went through a difficult year under severe environment at home and *** European debt crisis,slow economic growth in the world,active regulation onreal estate market at home,large pressure on ec... 详细信息

关键词： Difficult Time Passed with A Good Market Prospect Coming in the Future Review in 2012 and Prospect in 2013 of Chinese Passenger Car Replacement Tire Retail Market

Optimal Location and Sizing ofMulti-Resource Distributed Generator Based onMulti-Objective Artificial Bee Colony Algorithm

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Energy Engineering 2024年第2期121卷 499-521页

作者： Qiangfei Cao Huilai Wang Zijia Hui Lingyun Chen Economic and Technological Research Institute State Grid Shanxi Electric Power Co.Ltd.Xi’an710075China Central Southern China Electric Power Design Institute Co. Ltd.China Power Engineering Consulting GroupWuhan430074China

Distribution generation(DG)technology based on a variety of renewable energy technologies has developed rapidly.A large number of multi-type DG are connected to the distribution network(DN),resulting in a decline in the stability of DN *** is urgent to find a method that can effectively connect multi-energy DG to ***(PV),wind power generation(WPG),fuel cell(FC),and micro gas turbine(MGT)are considered in this paper.A multi-objective optimization model was established based on the life cycle cost(LCC)of DG,voltage quality,voltage fluctuation,system network loss,power deviation of the tie-line,DG pollution emission index,and meteorological index weight of ***-objective artificial bee colony algorithm(MOABC)was used to determine the optimal location and capacity of the four kinds of DG access DN,and compared with the other three heuristic *** tests based on IEEE 33 test node and IEEE 69 test node show that in IEEE 33 test node,the total voltage deviation,voltage fluctuation,and system network loss of DN decreased by 49.67%,7.47%and 48.12%,respectively,compared with that without DG *** the IEEE 69 test node,the total voltage deviation,voltage fluctuation and system network loss of DN in the MOABC configuration scheme decreased by 54.98%,35.93%and 75.17%,respectively,compared with that without DG configuration,indicating that MOABC can reasonably plan the capacity and location of *** the maximum trade-off between DG economy and DN operation stability.

关键词： Distributed generation distribution network life cycle cost multi-objective artificial bee colony algorithm voltage stability

Carbon Neutrality,a Concept Everyone Should Know

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China Oil & Gas 2021年第1期28卷 28-31页

作者： Han Xiaoping China Energy Net consulting Co. Ltd.

Promoting carbon dioxide emissions peaking and carbon neutrality is a holistic work that requires the active participation of every level of government,every enterprise,and even every *** prerequisite for participation is that everyone should know about these concepts,which further requires the relational data on energy emissions to be made transparent.

关键词： dioxide neutral transparent

Thoughts on Pathways to Carbon Neutrality

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China Oil & Gas 2021年第1期28卷 32-36页

作者： Ran Ze China Energy Net consulting Co. Ltd.

A three-pronged approach is needed to achive carbon *** order to achieve the goal of carbon neutrality,measures can be taken in the following three ***,on the energy supply side,we shall speed up the transition from fossil energy to non-fossil energy;second,on the energy demand side,we shall take the initiative in demand-side management,optimizing energy uses,improving energy efficiency and reducing energy consumption;third,we should actively develop various carbon sequestration methods,including afforestation,carbon capture,carbon storage,and carbon utilization(CCUS)technologies as well as direct air capture(DAC)technology.

关键词： steps neutral measures

Pumpability of Manufactured Sand Self-compacting Concrete

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Journal of Wuhan University of Technology(Materials Science) 2023年第6期38卷 1382-1390页

作者： LI Huajian HUANG Fali TU Haifeng SUN Deyi WANG Zhen YI Zhonglai YANG Zhiqiang XIE Yongjiang Railway Engineering Research Institute China Academy of Railway Science Corporation LimitedBeijing 100081China School of Civil Engineering Beijing Jiaotong UniversityBeijing 100044China China Railway Engineering Design and consulting Group Co. Ltd Beijing 100055China

By the addition of superplasticizer and air entraining agent,manufactured sand selfcompacting concrete(MS SCC)with slump flow varying from 500 to 700 mm and air content varying from 2.0%to 9.0%were prepared and the pumpability of MS SCC was studied by a sliding pipe rheometer(Sliper).According to the Kaplan’s model,the initial pump pressure and the pump resistance of MS SCC were ***,rheological properties including the yield stress and the plastic viscosity of MS SCC were measured by a *** experimental results show that the increase of slump flow contributes to a higher pumpability and a proper air content,i e,6%is beneficial for the pumpability of MS *** to the existence of stone powder and stronger angularity of MS,the initial pump pressure of MS SCC is only about 60%-88%that of river sand(RS)SCC with the same slump flow and air content,indicating that MS SCC possesses a higher pumpability than RS SCC.

关键词： manufactured sand self-compacting concrete pumpability sliding pipe rheometer rheology

Efficient capture of aqueous humic acid using a functionalized stereoscopic porous activated carbon based on poly(acrylic acid)/food-waste hydrogel

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Journal of Environmental Sciences 2019年第3期31卷 104-114页

作者： Tao Zhou Xin Zhao Shuya Wu Lianghu Su Youcai Zhao The State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and Engineering Tongji University Shanghai Chengpei Enterprise Management consulting Co. Ltd. Nanjing Institute of Environmental Sciences Ministry of Environmental Protection Shanghai Institute of Pollution Control and Ecological Security

Stereoscopic porous carbons have shown good potential in humic acid(HA) removal. In this work, a novel stereoscopic porous activated carbon(SPAC) was designed and synthesized via the self-assembly of a hydrogel based on food waste during in-situ polymerization, vacuum drying, carbonization, and activation. Then, the SPAC was functionalized with 3-aminopropyltriethoxysilane(APTES) and the adsorption behavior of the modified SPAC(SPAC-NH_2) was studied systematically. The effects of pH, contact time, initial concentration of HA, and adsorbent dose were investigated, showing that optimal HA removal efficiency(>98.0%) could be achieved at an initial HA concentration of 100 mg/L. The experimental adsorption isotherm data was fitted to the Langmuir model with a maximum adsorption capacity of 156.0 mg HA/g SPAC-NH_2. Analysis of the mechanism indicated that the removal of HA was mainly realized through the amidization reaction between the \COOH groups of HA and the \NH_2 groups of APTES. All of the above results showed that SPAC-NH_2 powder is an efficient,eco-friendly, and reusable adsorbent which is suitable for the removal of HA from wastewater.

关键词： Stereoscopic porous activated carbon Humic acid Food waste 3-aminopropyltriethoxysilane Adsorption