Integrated Intelligent Energy

Analysis on national energy efficiency strategy of New Zealand

FAN Jie 1，CHEN Quan 2

2014, 36(6): 1-3.

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Abstract:The national energy structure features of the New Zealand were analyzed. Starting from the angles of the energy efficiency improvement, the pollutant emission reducing and the environment protection, it was put forward that under premises of ensuring economy development and pollutant emission reducing, to increase utilization of renewable energy sources is effective way for reduction of consumption of fossil energy sources and improvement of energy utilization efficiency.

Schemes analysis of building installation in the natural gas distributed energy station

YU Xiuyan

2014, 36(6): 4-7.

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Abstract:Give example as distributed energy station in Huadian Industrial Park project, designing ideas of forbuilding distributed energy station installation schemes were analyzed. Pass through calculation, analysis and reasonable allocation of distributed energy station equipment, an optimized scheme was concluded that the energy station can realize highest efficiency and achieve maximum return at minimum investment, as well as meet the requirements of normal operation.

Study on the corrosion behaviour of welded titanium plate in simulated condensate of chimney in fossil power plants

SUN Deli 1，ZHOU Min 2，LIU Chunbo 2，BIAN Haibing 2

2014, 36(6): 8-13.

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Abstract:Among the anticorrosion methods of the chimney in fossil power plants, it is the titanium that acts the best, although some local corrosion occured in some instances. In this paper, several welding parameters were selected to improve the welding performance of titanium and enhance the anticorrosion effect. Through the comparison of the corrosion behaviour of specimens near the weld seam, an optimized welding parameter was proposed.

Analysis on reasons of wagon derailment accident inside wagon tipper and solutions

ZHENG Weibo

2014, 36(6): 14-16.

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Abstract:The performance parameters, the main structures and the unload process flow of the wagon tipper were introduced. The reasons of three wagon derailment accidents inside the wagon tipper of Huadian Guigang Power Generation Company Limited were analyzed. Some effective measures were adopted，and similar accident was eradicated completely.

Analysis and supervision of stator hoisting equipment press under overload construction

ZHU Chen

2014, 36(6): 17-19.

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Abstract:Based on theoretical calculation, the stator hoisting equipment stress in a coal fired power plant was monitored during the process of overload construction by resistance strain gauge method; then the test data derived were compared and contrasted with lifting equipment safety data, so as to ensure the security of major stressed areas and guarantee safe and stable overload construction of hoisting equipment.

Hydrogen supply plan selection of nuclear power stations

LI Lianghao,LI Yanlong,LIU Bingwei

2014, 36(6): 20-21.

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Abstract:nuclear power plant requires enormous hydrogen element, consumes large amounts of hydrogen, and has high demand on the reliability of hydrogen supply system. Currently the hydrogen supply system of domestic nuclear power plants adopt two type of schemes in general: hydrogen production and hydrogen purchase. Give example as third generation 2×1250MW nuclear power unit, in a nuclear power plant as case study subject, the researchers conducted a thorough comparative analysis on technical and economic factors and finally defined a technologically reliable, economically reasonable model of hydrogen supply system for nuclear power plants.

Analysis on reason of abnormal voltage fluctuation in output transmission line of Yangcheng Power Plant

SUI Jiayin 1, LIANG Zhifeng 2

2014, 36(6): 22-25.

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Abstract:In the output transmission system of the Yangcheng Power Plant, the line voltage fluctuated in 0.3 to 1.5Hz with uniform amplitude. It was found by research and analysis that the reasons of the abnormal line voltage fluctuation are high content of 47 time and 49 time harmonics in the system, insufficient sampling points of the synchronous phasor measurement unit (PMU) and the poor adaptation of PMU. The software program of PMU was upgraded, and the abnormal line voltage fluctuation was eliminated. The effectiveness of the improvement measure was verified by theoretical simulation and site practice. The result in this paper provides reference for practical power system operation and monitoring and analysis on abnormal fluctuation of the PMU curve.

Essential designing elements in belt conveyor installation and commissioning

WEI Gongxun, LIU Tianjun, WANG Libo

2014, 36(6): 26-27.

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Abstract:The operation mechanism of hydraulic coupler were introduced. The influences of various hydraulic coupler parameters on belt conveyor performances, the parameters including transmission power, braking torque and brake closing time, strain and initial position of strained drum on the effect of belt conveyor working condition were analyzed. Based on these, it further elaborated designing few factors in the process of belt conveyor installation and commissioning were discussed.

Hoisting of 179t generator stator in technical innovation project of Datang Shaanxi Lueyang Power Plant

WU Qianping

2014, 36(6): 28-29.

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Abstract:In the technical innovation project of Datang Shanxi Lueyang Power Plant, in order to ensure the 179t generator stator hoisting to be completed successfully, based on comparison, the hoisting scheme was determined. The temporary facilities adopted in the scheme were introduced. The difficulties and innovation points of the scheme were analyzed. The strength check result was given. The scheme was adopted, and the stator hoisting was completed safely and successfully.

Analysis on reformation of merging of induced draft fan and booster fan for 600MW thermal power unit

LI Haihao, ZHAO Pengfei, ZHANG Defu, LI Xiaoting

2014, 36(6): 30-32.

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Abstract:Taking two 600MW coalfired power units of Huaneng Tongchuan Zhaojin Power Plant project phase I as example, the technical reformation scheme of “merging induced draft fan and booster fan” was analyzed. The economical efficiency and the auxiliary power rate of the units after reformation were compared with those indexes of the units before reformation. After the reformation, the induced draft fan operates stably, and the expected reformation goal was achieved.

Application of metrical information collecting circuit with antiinterference function in manufacturing of cement balance weight

WEI Shuman

2014, 36(6): 33-34.

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Abstract:A metrical information collecting circuit with antiinterference function used in cement balance weight manufacturing was introduced. Using the circuit, the metrical common interference signal and electromagnetic interference signal can be prevented, the signal transmission way can be simplified, the error of the metrical signal can be avoided, and the accurate transmission of the metrical signals was ensured. So the technical difficulty in metering and control of cement balance weight manufacturing for the ship lift of Three Gorges project was solved, and the technical level of the balance weight manufacturing was raised.

Development and application of unit startup flow chart of Lanxi Power Generation Company

XIANG Wenjie

2014, 36(6): 35-37.

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Abstract:The abnormal situation occurred in startup process of supercritical coalfired unit of Zhejiang Zheneng Lanxi Power Generation Company Limited was analyzed, and the unit startup flow chart was developed purposefully. The composition of the unit startup flow chart was introduced. The unit startup flow chart was used to normalize and guide the unit startup process, and it was ensured that the unit can be started successfully.

Application of integrated membrane water treatment technology in Wuqing Distributed Energy Station

YAN Caixia

2014, 36(6): 38-39.

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Abstract:The working principle of the integrated membrane water treatment technology was introduced. The process flow and equipment arrangement of the integrated membrane water treatment technology were expounded. Taking Tianjin Huadian Wuqing Gas Fired Distributed Energy Station as example, the feasibility to use the integrated membrane water treatment technology to treat the circulating water blowdown water of the distributed energy station was analyzed. After the integrated membrane water treatment technology was put into use, the water was saved, and the pollutant emission was reduced. The ion exchange equipment of the traditional water treatment process was replaced, and the technical difficulty in waste water reuse was overcome.

Antifreezing reformation of Heller type indirect aircooling system and economy analysis

LI Jingang, LI Yazhong, GUO Hongbo, WANG Guozhen

2014, 36(6): 40-44.

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Abstract:The operation situation of the indirect aircooling system was introduced. The working principle of the aircooling radiator and the main reasons of freeze damage of the radiators were analyzed. The method and target of reformation were proposed. The circulating water input and output ways of the cooler of the indirect aircooling system were changed. The connection mode of the air emptying pipes of the cooling column waterfeeding chamber and the microcirculation system of air loop pipes were improved. The performance test result of improved system shows that the winter freezeproofing performance and the annual economic efficiency of the system were improved significantly.

Analysis on application of field bus technology in 660MW supercritical unit

ZHANG Zhanqiang

2014, 36(6): 45-47.

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Abstract:The field bus technology becomes the foundation of construction of digitalized and intelligentized power plant. A novel bus control system, in which the FF field bus protocol and the profibus protocol were integrated, was introduced. The application principle and the network structure of the novel field bus technology were analyzed. The experiences of engineering application were summarized. The results in this paper provide reference for popularization and application of the field bus technology in power plants.

Recycle of ash sluicing water and circulating water blowdown water of power plant

WANG Qiang

2014, 36(6): 48-51.

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Abstract:In a power plant project phase I, the ash sluicing water of ash yard and the circulating water blowdown water were recovered. The two kinds of waste water were mixed and treated by coagulation, clarification and filtration processes. Then, a part of the water is used as ash sluicing water and for mixed purposes in plant area, and the another part of the water treated further by ultra-filtration process and the reverse osmosis integrated membrane deep treatment process, and then was used for water make up of the boiler. The process flow, the matters needing attention in design, the debugging process and the operation of the recycling system were introduced. After the system was put into operation, the quality of the pretreatment and aftertreatment output water was stable and can satisfy the requirement of inlet water quality of the boiler make up water treatment system.

Method of making up water for boiler during pipe sweeping with low cost

WU Zhiwei

2014, 36(6): 52-53.

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Abstract:A method of making up water for boiler during the boiler pipe sweeping period was introduced. In this process, the condensate pump, the lowpressure header and other devices are not needed to be put into operation, and only the condensate transfer pump or condensate make up pump shall be started to supply the water to scattered users and to make up water to deaerator. By the method, the water consumption of scattered condensate users was ensured, and the water make up requirement of the boiler during pipe sweeping period was satisfied. The auxiliary power was saved effectively, and the cost of boiler pipe sweeping was reduced.

Optimization and reformation of M701F gas turbine rotor cooling air system

YUAN Ye, HUANG Faan

2014, 36(6): 54-55.

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Abstract:In a power plant, it was found in unit maintenance that the first stage rotor blade of the M701F gas turbine was damaged seriously. The filter screen in inlet of the compressor was replaced, the turbine cooling air cooler system was reformed, and the operation mode was optimized. Then the rotor blade damage was alleviated effectively.

Application of contract energy management in thermal power enterprises

TENG Lihui

2014, 36(6): 56-58.

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Abstract:The contract energy management is a new energy conservation mechanism based on market operation. It can remedy energy user’s defect of insufficient fund for energysaving reformation and can transfer the risk of energysaving project. The conventional energysaving reformation technology of the thermal power enterprises was studied, and the features of energysaving reformation projects were analyzed. It was proposed that the contract energy management mode can be used in technical reformation project of thermal power enterprises. Combining with the influence of the thermal power enterprise life putting into operation on contract energy management mode, an investment mode of contract energy management used in thermal power enterprise was established, which can provides guidance for thermal power enterprises in energysaving investment.

Shortcircuit analysis for power projecttopower grid system connecting scheme without known power grid data

ZHAO Dawei, WEI Hongwei

2014, 36(6): 59-62.

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Abstract:In the oversea power projects undertaken by china enterprises, the situations of the local power system are unknown for the china enterprises sometimes. The shortcircuit characteristics of the projecttopower grid system connecting scheme was discussed and analyzed. According to the assumed condition and to actual condition, the shortcircuit calculations were carried out separately. The shortcircuit calculation results were analyzed and compared, and the deviation of the shortcircuit analysis was given.

Bring question to attention of evaporative condenser

WANG Hongna, QI Huaisheng, WANG Qingguang, LI Huanli

2014, 36(6): 63-64.

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Abstract:The application background of evaporative condenser was introduced. The heat transferring mechanism of the evaporative condenser was expounded. The actual application of the evaporative condenser shows advantages of the evaporative condenser in water and energy conservation eminently. Combining with the design experiences and industrial application examples of evaporative condenser, the matters needing attention in design of evaporative condenser were put forward.

Influence of burning Wucaiwan coal on operation of boilers No.3 and No.4 in Hongyanchi Power Plant

LI Peng

2014, 36(6): 65-68.

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Abstract:The technical parameters of boilers No.3 and No.4 of Huadian Xinjang Hongyanchi Power Plant and the designed coal quality for the boilers were introduced. The influence of burning Wucaiwan coal on operation of boilers No.3 and No.4 was analyzed. The principle and the basis of coal blending for the boilers No.3 and No.4 were proposed. The scientific and effective blending methods were adopted, which are helpful to prevent boiler slagging, to reduce power generation cost and to improve safe operation of the boilers.

Reformation of soot blower control system of desulphurization GGH in 600MW unit

YAO Xiujuan, ZHAO Lianli, LIU San, ZHU Yanzhong

2014, 36(6): 69-72.

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Abstract:The soot blower of desulphurization GGH in the 600MW unit of Huadian International Zouxian Power Plant is controlled by PLC, and the operators can not determine the device faults quickly. The local PLC and the position coder were eliminated, and according to the GGH soot blowing process flow block diagram, the new control logic was designed in DCS. Then the soot blower is controlled by DCS, which provides convenience for operators and thermotechnical personnel in operation, monitoring and maintenance of the system.

Technical and economical analysis of rotatable electrode electrostatic precipitator and electrostaticbag precipitator

WANG Lei

2014, 36(6): 73-76.

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Abstract:The structure and working principle of the rotatable electrode electrostatic precipitator and the electrostaticbag precipitator were described briefly. The technical performance and economic efficiency of the two kinds of dust remover were compared and analyzed. The design and type selection of the two kinds of dust remover and the reliability of work process and the factors influencing on dust collection efficiency were discussed, and the solving measures were proposed.

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