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- Abstract：In order to meet the needs of the power gridsecond FM regional,power unit to receive the AGC instruction will follow the grid frequency changes frequently,the magnitude and direction of change has very strong randomness,many thermal power units have electric load response time and adjust the rate exceed the standard problem of insufficient in AGC mode. Based on the analysis of the operation characteristics of the regional power grid AGC,the paper points out the main points of the AGC control scheme,and puts forward the variable load feedforward control strategy with adaptive ability. After several times of static test and dynamic simulation of variable load test,the control strategy is successfully applied to the CPI Anhui Pingwei Power Plant 2×1050MW ultra supercritical thermal power units,the practice proves that the AGC control strategy has strong adaptive capacity,improve the thermal power unit load response ability.Keywords：AGC;randomness;magnitude;direction;adaptive;coal feed-forward20|41|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：NO_x control is the difficulty of the ultra low emission retrofit in “W” Type flame boiler. On the basis of model analysis on 2×600MW “W” type flame boiler,the project time-limit,construction scheme,investment,energy and material consumption,running cost and operational reliability have been deeply calculated and discussed,and the results can be used for further reference.Keywords：“W” type flame boiler;ultra low emission;De-NOx;techno-economic comparison12|10|0<HTML><DownloadPDF> <Meta-XML>Updated：2026-05-15
- Abstract：For coal-fired power plant of coal spontaneous combustion tendency and features,Through the experimental study,three kinds of lignite,three kinds of bituminous coal,three kinds of anthracite have selected to research the coal heating rate characteristics for temperature oxidation,the field experimental results showed that lignite has the largest temperature oxidation heating rate,while anthracite has minimal. And the scene to carry out the study of coal storage test, the experimental results also showed that with the increase of laboratory lignite storage time,the coal average particle size decreases for the decreasing of large particles and increasing of small particles. The coal temperature early warming faster,late rising slowly,coal calorific value decreased.Keywords：coal-fired power plants;coal;spontaneous combustion tendency;field testing study;temperature increasing rate4|31|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：The inspection of reheater attemperator is an important part of routine maintenance of gas turbine.This article described the water inlet pipe of desuperheater weld crack phenomenon found in the routine maintenance of 6 gas turbine,and analyzed the reason of desuperheater weld cracking and fracture. On one of the gas turbine desuperheater,the inlet pipe and the heat exchanger casing structure were improved. After more than 2 years of operation,it's currently running in good condition.Keywords：mechanical atomizing desuperheater;hybrid attemperator;fatigue failure;1;2 communicating pipe of the reheater;cracking1|31|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：The protective properties of the oxide layer of TP347H high temperature superheater tube were analyzed in this study. The formation and exfoliation mechanism of the oxide layer was researched. The microstructure of the oxide layer of TP347H high temperature superheater tube was observed by scanning electron microscope(SEM) and the morphological features of it was also analyzed. The concentrations of alloy elements in the section of internal tube were quantitatively analyzed using energy dispersive system(EDS). The results showed that:The formation mechanism of oxide layer were mainly steam oxidation mechanism and oxygen oxidation mechanism. When the pipe had enough content Cr,to ensure the normal internal and external diffusion conditions,and the Fe-Cr spinel was formed,even the protective layer of Cr2O3 was formed. The oxide skin damage and exfoliation is mainly due to the oxygen oxidation mechanism. When the steam environment containing excess oxygen,dissolved oxygen as oxidant and it happened oxygen reaction with Fe-Cr spinel and Cr2O3 chromium layer. That destroy the structure and composition of Fe-Cr spinel,Cr2O3 chromium layer,so that the oxide layer loss of protective effect. The formation and exfoliation of oxide scale is mainly based on the mechanism of steam oxidation,the mechanism of oxygen oxidation and the mechanism of oxygen oxidation. The three mechanisms explain the whole process of the formation,growth and exfoliation of oxide skin.Keywords：TP347H steel;high temperature superheater tube;oxide layer;steam oxidation;oxygen oxidation;oxygen peroxidation;mechanism study2|30|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Analysis of the current wind fan change the present situation of the box,proposed to improve the technical measures,to form a new type of intelligent box changes, the overhead lines into line to replace the failed cable,the main oil drop tank is completely isolated,equipped with the intelligent monitoring device,implement the fan box intelligent management,improve the safety and economic behavior of the wind farm.Keywords：intelligent;transformer;application analysis2|36|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：The output performance of wind turbine directly affects benefit of wind farms. Using the data of SCADA system of wind turbines,the output performance analysis mainly includes power generation analysis,power curve analysis,reliability analysis based on MTBF and MTTR,etc. By analyzing a wind farm in Yunnan,we can find out wind turbines with poor performance and make corresponding qualitative analysis. Furthermore,direction and reference suggestions for the followed system performance analysis can be provided.Keywords：wind farm;wind turbine;output performance;power curve;MTBF;MTTR18|34|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Based on the discussion of the reliability of the steam turbine shaft seal under different operation modes,the steam supply system is optimized to ensure the safe and stable operation of the unit.Keywords：combined cycle;operation mode;shaft seal;reliability1|28|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Photovoltaic backsheet is an encapsulating material for photovoltaic modules. Backsheets protect photovoltaic cells from the harm of the environment,such as the moisture,the ultraviolet ray or the wind. After summarizing common test items for photovoltaic backsheet materials. This paper investigated an effective way of performance test and evaluating method for photovoltaic backsheet materials in engineering application. Basing on the results of investigation,an actual case analysis was presented.Keywords：photovoltaic backsheet materials;performance test;case analysis2|30|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Coal mill is an important auxiliary equipment in power generation. The servo life of roller setsdirectly affects the economy. After usingnew technology of repairing the roller sets servo life can be adjusted up to 15000 hours and obtained remark able economic benefits.Keywords：coal mil;wear;roller sets;metal cermet;stacked welding1|27|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：NO.2 unit of one power plant is a 300 MW subcritical unit.The boiler adopts the single-furnace、tangential circle combustion method and the storage steel mill system. During the overhaul period, the coarse powder separators corresponding to the A/B/C mills have been reconstructed.changed from The original dual-axis coarse powder separator to dynamic separator. After the transformation,the fineness and uniformity of pulverized coal have been greatly improved,which is beneficial to the ignition and combustion of pulverized coal.Keywords：milling system;mill output;mill fineness;uniformity;dynamic separators2|24|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：First,this paper briefly introduced the status of heat recovery from flue gas,and the value of heat recovery from flue gas to energy conservation and emission reduction in China. Then, it introduced the methods of heat recovery of flue gas from combined gas and steam cycle waste heat recovery boiler and the influence of heat recovery equipment on waste heat recovery boiler. Finally,the waste heat recovery efficiency of a 390 MW F-class gas turbine was compared and analyzed,the result showed that by recovering the waste heat of flue gas from combined gas and steam cycle waste heat recovery boiler,considerable economic benefits can be obtained on the basis of guaranteeing the safety of the equipment.Keywords：waste heat recovery boiler;waste heat utilization;economic analysis7|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Through the installation of online cleaning robot instead of the original use of rubber ball cleaning system,the on-line cleaning of condenser cooling pipe is realized. Experiments have proved that on line cleaning technology, improved the cleanliness of condenser,turbine back pressure reduced,finally achieve the purpose of reducing coal consumption. And provide some reference for the economic operation of the unit.Keywords：condenser;robot;cleanliness factor;exhaust pressure;coal consumption2|8|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：With the deepening of China's new power system reform, the power industry competition will be fully liberalized; the current power market structure will undergo profound changes. Based on the analysis of the new power system reform and the main features, this paper discusses the impact of the reform of the new power system on the power generation enterprises, and reformes the new challenges arising from the operation mode and operation and management of the electric power enterprises under the traditional economic system. Electricity market demand,change management concept of production, response to new power system reform response.Keywords：power system reform;power generation group;state-owned enterprise reform;power transaction10|6|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Based on the information technology,the collecting and organizing dam safety related information for all the dams of the power generation group are realized by information construction. Further, deep analysis is carried out for data analysis,data mining and forewarning information. Finally achieved the dam safety integrated management of the power generation group.Keywords：information construction;dam safety;integrated management;data analysis;forewarning information0|8|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：This paper first draws a comparison of Japanese electric power systems before and after the disastrous East Japan earthquake. Then an introduction is given to the measures of electric power liberalization that Japanese administration has exercised up till now. Meanwhile, this paper clarifies the problems existing in the current Japanese electric power systems. Also a study is made on the changes in Japanese electric power industry and electricity market that the East Japan earthquake and Fukushima nuclear accident have brought about. Based on the above, the relevant incentives and initiatives for reforming Japanese electric power systems are discussed mainly from the perspective of energy economics. In the end,some suggestions are provided for Chinese electric power system reformation.Keywords：east Japan earthquake;electric power system;reform incentives;reform initiatives4|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
Engineering Practice and Discussion on Its Problem of Atmospheric Hot Waterboiler Heat Supply System
Abstract：Based on a combination of theoretical basis as well as the engineering practice of hot water boiler heat supply system,this thesis presents a method of determining the installation height of expansion tanks for the boiler,a method of determining water temperature,as well as a method of selecting pump head and the compact drawing of the boiler equipment layout. In addition,this thesis presents empirical values of heating system design.Keywords：atmospheric hot water boiler;expansion tank;outlet water temperature;vaporization;pump head;perfusion height;saturation pressure1|6|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15- Abstract：The calculation method of the heating loss of piping network, the selection of the key parameters and the data source are introduced in detail in this paper. According to the annual meteorological data and the annual load prediction,combined with the actual situation of a project in Shanghai,the design condition and the annual heating loss are calculated, the results show that:the heating loss of cooling pipe network in design condition is about 0.2% of cooling capacity;the annual cooling loss accounted for about 0.8% of the cooling capacity;and the proportion of heating loss of the cooling pipe network is small,and much smaller than the heating loss of the heating pipe network.Keywords：district energy system;piping network;heating loss;buried depth;soil temperature;land surface temperature1|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Air conditioning and ventilation system design for the super high-rise building of Nanjing youth Olympic center is introduced. Design ideas and measures of heating and cooling source,water system zoning for air conditioning,ventilation and smoke control systems for the main areas are focused on. Large temperature difference,heat recovery and all fresh air supply using in this building are briefly introduced.Keywords：super high-rise building;heating and cooling source;water system zoning;ventilation;smoke control systems6|8|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：HVAC design of super high-rise buildings is the research object,analysis on the Key Points and special Difficulties in Air conditioning design parameters chosen,cooling and heating system design, air-conditioning system,fire control system,MEP height control, in order to provide reference for the similar HVAC design of super high-rises building.Keywords：超高层建筑;空调设计参数;冷;热源设置;风系统;消防系统;机电层高1|6|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Present air conditioning and ventilation system design for joint factory building. Expound the method and application of post air conditioning and hybrid ventilation in this project, available as a reference for similar design.Keywords：joint factory building;post air conditioning;hybrid ventilation;energy-saving0|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：This paper introduces the cold and heat source of the air conditioning system for a bank data center in Shanghai,the heat recovery chillers combined with 3000m~3 air-conditioning cold water emergency tank can provide heat source in winter and chilled water storage in summer,which reduces air-conditioning operation cost of the office area effectively.Keywords：chilled water storage;heat recovery;date center1|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Introduced a comprehensive office building of the central air conditioning system design features and experience, the practice can be the same type of office building design and construction to provide some reference and experience.Keywords：ice-storage air conditioning;DSM;VAV;PLC control7|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
