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- Abstract：Performance tests of WESP were conducted in this work.The multi-pollutant synergistic removal perfor-mance of WESP was analyzed according to the performance test.The results show that the collection efficiency of WESP was above 85%,and the synergistic removal efficien-cy of PM2.5,SO3,Hg was reached above 84%,71% and 64%.PM emission concentration was lower than 5mg/m3,which achieved the environmental protection standard emission lim-its.The direction for the development of multi-pollutant con-trol technology was provided by WESP for advanced syner-gistic removal performance of PM2.5,SO3,Hg.Keywords：wet electrostatic precipitator;collection efficiency;performance test;PM2.55|19|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Experiments were performed to investigate the problems of the existing combustion system and the SN-CR system of a CFB boiler before the ultra-low pollutants emission reconstruction,and made the plan.The practice of the project has proved that CFB boiler can meet the re-quirement of NOx ultra-low emission under the high or middle load after the reconstruction.But under the low load, especially the actual coal quality seriously deviated from the designed coal quality when there is still a large risk.Keywords：CFB;circulating fluidized bed;low-nitro? gen combustion;SNCR;ultra-low emission6|35|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：The system is coal-based online intelligent detection system for the current coal-fired power plant based on the analysis of the coal into the boiler.The sys-tem can guide the boiler combustion adjustment and optimi-zation,thus effectively ensuring the power plant boiler safe and efficient operation.Keywords：LIBS;coal as fired;quantitative sam? pling;automatic continuous sample preparation;intelli? gent online detection system3|46|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：In allusion to a 660MW supercritical boiler after the transformation of low NOx swirl burner, through the variable conditions (different oxygen, different air distri-bution mode, the secondary air opening, the central air opening, different air swirl intensity of the tertiary air and the quartic air, etc.), the NOx emission characteristics and burner economy were measured.The test results showed that there are oxygen, the operation of air distribution of different layers burner and burner adjustment has certain in-fluence on the emission of NOx.The Operation suggestions were given:1) the oxygen should be controlled at about 2.3%, the environmental protection and economic of boiler could get balance; 2) the air distribution of different layers of burner should adopt as tower form, i.e.the upper burn-er throttle opening 40%, middle opening 60%, the lower opening 80%; 3) the burner adjustment should following this settings:the central air burner and secondary air holds a small opening, tertiary air vane angle of 30 degrees, quar-tic air vane angle of 45 degrees.Keywords：LNASB burner;low NOx Combustion;NOx emission;combustion regulation3|25|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Aiming at the problems of high bed temper-ature and large concentration of NOx emission in a 200MW circulating fluidized bed boiler,the boiler is studied in this paper:the experimental analysis is carried out re-spectively from adjustment of fluidizing air volume, running oxygen rate, ratio of up and down secondary air and bed pressure.The experimental results show that with the in-crease of fluidizing air, the bed temperature and NOx emis-sion increased significantly;With the increase of running oxy-gen,bed temperature decreased significantly, NOx emissions increased significantly;Properly reducing the bed pressure and closing the opening of the lower secondary air register can effectively reduce the bed temperature and inhibit the formation of NOx.Through a variety of combustion adjust-ment means, the NOx emission concentration under three loads can be controlled below 240mg/m3.Keywords：CFB;bed temperature;reducing atmo? sphere;Nox0|47|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Large-scale thermal power project construc-tion needs to go through several procedures, such as the feasibility study, preliminary design, construction design, con-struction commissioning and operation optimization.This pa-per mainly focuses on the following aspects:electronic de-sign optimization steps, design optimization measures, hot spot and difficulties of optimization.Compare the reliability, flexibility, advancement, practicality, economic condition un-der the constraints of regulations.Thus, the cost of the proj-ect will be deduced and the company will get the maxi-mum profit by design optimization.Keywords：large-scale thermal power project construc? tion;design optimization;electrical4|34|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：This paper studies the commutation test con-ditions for the determination of Cl- and SO42- in valve cool-ing medium.The test determined by ion chromatography.Using the gradient elution mode to replace traditional iso-cratic elution mode, which obtain good separating effect and quantitative accuracy in chromatographic component.Test procedure is simple, in addition, it Solves the problem in measuring Cl- and SO42- in aqueous solution in the con-verter valve cooling medium in glycol.To provide a reli-able basis for quality supervision for HVDC converter valve cooling medium,which effectively controls the corrosion in internal cooling water system.Keywords：converter valve;glycol;ion Chromatogra? phy;Cl-;SO42-2|34|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：The burst cause of a platen superheater tube of T91 steel in certain supercritical units was ana-lyzed by macroscopical morphology, chemical composition, hardness test,OM and SEM observation using the speci-mens exploded platen superheater tube.Results show a low hardness of the failed tube which is related to the micro-structure transformation.The metallographic structure of T91 steel is tempered martensite, while the metallographic struc-ture of the exploded tube doesn't show any martensite at all.The martensite lath is evolved into ferrite and coarsen carbides precipitated at grain boundry.The overheat opera-tion of superheater tube causes the microstructure degrada-tion and the decrease of mechanical properties, and finally causes the leakage of platen superheater tube under the condition of high temperature and pressure steam.Keywords：supercritical units;platen superheater tube;T91 steel;burst tube10|25|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Comprehensive analysis was carried on by means of macro analysis and chemical composition analysis, metallographic examination, mechanical properties testing to analysis the failure mechanism of 25Cr2MoVA locating bolts.The results show that morphology of the fracture was typical fatigue failure.the hardness of the fractured position was higher than requirements and the impact energy is well below the requirements.The microstructure is tempered.orga-nization has a certain direction,the ball is not complete.This is closely related to its improper heat treatment,it can not meet its operational performance requirementsKeywords：positioning;bolt;fatigue fracture3|37|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Ammonia slip is the key parameter of the SCR denitrification from coal-fired boiler flue gas.On the basis of a large sample sizes study on the application sta-tus of ammonia slip online monitoring of SCR denitrifica-tion from coal-fired boiler flue gas,application situation, ap-plication effect,typical problem were systematic summarized and analyzed, and some countermeasures were proposed, which can be used for further reference.Keywords：de-NOx;ammonia slip;online monitor? ing;application status9|26|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：There are nine 135MW grade pure condens-ing units and extraction-condensing units with high back pressure heating in the Shandong regional power grid.There are four types of retrofit schemes.In this paper, the characteristics and modification of four kinds of retrofit schemes listed.Through thermal performance test, the eco-nomic indexes after reformed are obtained and analyzed.For the unit reconstructed its LP cylinder current,its modi-fied LP cylinder efficiency is the highest.Because of influ-ence of heat load,circulating water flow and retrofit schemes,four units can not operate without extraction flow during heating period, resulting in lower power capability and higher heat consumption rate.Keywords：135MW grade;condensing steam tur? bine;circulating water heating;high backpressure retrofit;flow passage reform of LP cylinder13|37|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：This paper is aimed at coal-fired power sta-tion boilers with the problem of scrambling for air often oc-curred in the axial in-duced draft fan which is existing be-tween the fans connected in parallel operation, due to the factors such as system reform.Through the overall system analysis of the production site, optimizing the air preheater soot program,leveling ammonia injection grid, and other measures, reduce the resistance of the flue system,we have completely solved the "stubborn disease" in production.The successful experience and scientific practice has a good sig-nificance to generalization and reference.Keywords：Suction fan;Scrambling for air;Cause analysis;Treatment3|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：The paper established a finite element mod-eling of a 1000 MW unit.The model was used to study the vibration response characteristics of the shafts at both ends of the generator.The simulation results showed that the first-order imbalance of the generator first caused the in-phase vibration at the first-order critical speed of the generator when the two ends of the generator support simi-lar characteristics.When the difference in support character-istics between the two ends of the generator was large, the first-order unbalance of the generator provoked a large inphase vibration at the first-order critical speed of the gener-ator, and also provoked a large reverse component.Finally, the reliability of the conclusion was verified by combining the abnormal vibration diagnosis and processing cases of a generator.Keywords：汽轮发电机;支撑特性;振动;三支撑结构3|6|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：The electric control system of fan oil station of a power plant has two working power supply,equipped with CB ATSE device, the device adopts the working mode of "automatically transfer and restore ";In the process of power switching,the power supply interruption occurred.This paper had analyzed and discussed the problem,and put for-ward some improvement measures,hoped to provide refer-ence for other similar CB ATSE in thermal power plants.Keywords：automatic transfer switching equipment (ATSE);category I load;automatically transfer and non? automatically restore1|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：In order to ensure the reliability of elec-tric energy measurement and safety operation of power grid,it's necessary to monitor and analysis the error of high line loss,obtain the measurement error of metering device.This paper introduce the example on monitor and analysis of 35kV Te-tuan-guang I line measurement error,according the monitor data and result,analysis the reason for high line loss,give the factors influencing electric energy mea-surement device and the measures。Keywords：high line loss;error;monitor;analy?sis4|6|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：An accident of generator trip caused by over temperature of excitation transformer which run through the UNITROL 5000 excitation system had been in-troduced in this paper.According to the protection action and the recorded data, through the comprehensive inspec-tion, it is concluded that the fundamental cause of the acci-dent is the sampling distortion of the temperature measure-ment element in the excitation transformer, and the indirect reason is that the temperature protection configuration of the excitation transformer is not reasonable.Keywords：excitation transformer;over temperature;temperature protection1|8|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Frequency converter is widely used in indus-trial production because of its unique characteristics of pow-er regulation,speed regulation and remarkable energy sav-ing effect.This paper takes the selection of frequency con-verter in a polycrystalline silicon plant as an example.Based on analyzing the test data and field operation results and summing up experience,it comprehensively analyzed the selection principle and method which can be used as reference for the selection of frequency converter.Keywords：requency converter;industrial produc?tion;selection;apply8|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Technology supervision has been conducted at electric power generating enterprises on power generating equipment by means of equipment monitoring and data anal-ysis.So far, this kind of technology supervision merely falls into the sphere of technology management.This paper attempts to analyze the technology supervision from such economic perspectives as principal-agent relations, game playing, and cost-benefit analysis.Based on this analysis, some policy suggestions are proposed.Hopefully, such an economic analysis of technology supervision could be a step forward to rationalize and revitalize the technology su-pervision as conducted at electric power generating enterpris-es.Keywords：electric power generating enterprise;tech? nology supervision;principal-agent relations;game playing;cost-benefit analysis6|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：A direct return and reversed return chilled water system simulation network with bypass differential pressure control is established.By the method that shutting certain subcircuit, and computing hydraulic imbalance de-gree of other subcircuits, then the influence of the position of the differential pressure signal on the hydraulic stability of the system with on-off valves at the terminal is ana-lyzed.The result indicates that the farther away from the cold source, the worse the hydraulic stability of the system is as a whole, the closer the subcircuit to the position of pressure difference feedback signal,the better the stability, while the stronger the interference of the subcircuit is.So it's best to use the bypass loop as the signal taking posi-tion.When the pump frequency adjustment based on the temperature difference control is applied in the cold source side, the hydraulic stability of the pipe network significant-ly improved.Keywords：direct return;reversed return;bypass pressure difference control;hydraulic stability;position of differential pressure signal;temperature difference control1|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Introduction of the building current situation of air conditioning system, recheck the total cooling and heating load, focus on elaborate and compare different tech-nical configuration of heat and cold sources scheme.By comparison of engineering retrofit cost and operating cost,obtain the best retrofit scheme.Keywords：original equipment parameters;total cool? ing and heating load;operating cost;air conditioning heat and cold sources scheme6|9|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：This paper introduces ground source heat pump system design experience to combine the buried heat exchange piping for air condition system and solar water system into one,and investment & payback period of ground source heat pump system for this project is estimat-ed.The application of ground source heat pump is dis-cussed based on study of this case.Keywords：ground source heat pump;auxiliary heat source for solar water system;buried piping system5|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
