Integrated Intelligent Energy

Research on maintenance technologies of 9E gassteam combined cycle peakshaving unit at stop and standby periods

SU Baoxing;YAO Yong

2012, 34(S1): 1-7.

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The research situation of the maintenance technologies of 9E gassteam combined cycle peakshaving unit at stop and standby periods and existing problems were introduced. According to the anticorrosion mechanism, the maintenance method suitable for a company unit under complex and changeable stop and standby states was found by experiment. The implementation of the method shows that the method is rational and effective and has good applicability, and better economic benefit and social effect were obtained.

Application of probability analysis method in analysis and previous control of the dangerous points of foundation

HOU Xingheng;XU Zhengrong

2012, 34(S1): 8-10.

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The concept of probability analysis and common application program of the probability analysis method were introduced. The ideas to apply the probability analysis method in identification and analysis of dangerous points of the foundation were analyzed. The matters needing attention in applying the probability analysis method in enterprise safety management were pointed out.

Optimization of purging time of gas turbine

HUA Yudong;JIN Peijun;XU Zhengrong

2012, 34(S1): 11-12.

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According to the requirements of quick starting of the peak shaving power plant and the requirement of fire protection and explosion prevention for the gasfired unit, combining with the practical situation of the unit, some technical data, such as the practical space volume occupied by the gas turbine and the heat recovery boiler, the air flow for purging of the gas turbine at the purging rotate speed, the purging air replacement ratio and so on, were analyzed. The time needed for gas turbine purging was reconfirmed. According to the final calculation result, the gas turbine purging time was shortened from 15min to 10min. The starting time of the unit was shortened, and the startup speed of the peak shaving power plant was improved.
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Analysis on conditions of scaleenlarging development of Shanghai Fengxian Gas Turbine Power Generation Company Limited

QUE Yawei

2012, 34(S1): 13-15.

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Taking Shanghai Fengxian Gas Turbine Power Generation Company Limited as example, the external situations of the area where the company locates were introduced, which include the electric power development, the energy supply, the heat requirement and so on. The advantageous conditions of the company itself for scaleenlarging development were analyzed. The precontrol measures of existing risk were described, and a viewpoint was put forward as below, and a viewpoint is proposed as following , first, the feasibility study of project should be carried out in time, and then, the effort on the approval and development of project should be made by creating the appropriate condition.

Research on automatic generation control strategy for 9E combined cycle power plant

CHEN Yonggang

2012, 34(S1): 16-18.

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The automatic generation control (AGC) scheme for 9E combined cycle unit was designed and researched. The AGC control indicators were put forward. The main strategy and control method to realize AGC load control were determined clearly. A complete overall solution was finalized and verified by production practice.

Improvement of reliability of auxiliary power system of a power plant

HOU Xingheng;XIAO Feng

2012, 34(S1): 19-20.

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Rational configuration of the auxiliary power system of a power plant is the basis for ensuring the safe and stable operation of the units. Aiming at the potential safety hazard existing in the public and water processing power distribution system of a power plant, the reformation scheme was proposed. The reliability of the reformed power supply system was improved greatly. The scheme can be used as reference for handling with similar problems.

Analysis on reasons of lower efficiency of highpressure cylinder of domestic importedtype 300MW steam turbine

WU Qiang;HUA Yudong

2012, 34(S1): 21-25.

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Combining with the practical operation of the 300MW unit of a coalfired power plant, the reasons of lower efficiency of highpressure cylinder in domestic importedtype 300MW steam turbine and typical problems influencing on the unit efficiency were analyzed. A targeted technical improvement scheme was proposed. After the implementation of the improvement scheme, the favorable economic benefit and social effect were obtained.
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Analysis on operation condition characteristics of chemical water system of heat recover boiler in gassteam combined cycle unit

YAO Yong;HUANG Xingde;ZHU Qing;FEI Jianying

2012, 34(S1): 26-29.

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Some difficult problems exist in operation condition control of chemical water system of head recover boiler in gassteam combined cycle unit, which include that the cation conductivity of the steam exceeds the standard, the steam in the steam drum contains water, it is more difficult to control the quality of water and steam during startup stage and so on. Starting from the target of ensuring the healthy and safety of the unit equipments, by the thermochemical test and the evaluation in depth, the safe and effective standard of operation condition control of the chemical water system and the flexible monitoring system were established.
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Analysis on reason of flameout rotating speed rising of 9E gas turbine and countermeasures

WANG Huanhuan;LI Honglian

2012, 34(S1): 30-32.

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Aiming at the problem of flameout rotating speed rising of 9E gas turbine, the shutdown history data of the gas turbine were analyzed. The shutdown procedure and the characteristic parameters of the function modules of Mark V control system were studied. By online test and dynamic modification repeatedly, the parameters matched with the current status of the gas turbine were found out finally, and the gas turbine can be stopped at normal flameout rotating speed. Due to the solving of this problem, the reliability of the Mark V control system for the gas turbine was improved and the safe and stable operation of the unit was ensured.

Analysis on optimization of quick start of 9E combined cycle generating unit

ZHAO Han

2012, 34(S1): 33-35.

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Taking the 9E gassteam combined cycle power generating unit of Shanghai Fengxian Gas Turbine Power Generation Company Limited as example, the optimization method on quick start of the unit was introduced. The energysaving effect of the optimized unit was analyzed. The result in this paper provides reference for handling with similar problems.

Analysis on measurement error of grid energy meter under low load condition

XIAO Feng

2012, 34(S1): 36-37.

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The problem of metering error in realload examination, which is too big to measure accurately, was investigated. The improvement measures were proposed, which can be used as reference for similar power plants to improve the measurement method of their grid energy meters.
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Application of cloud computing in informatization of electric power industry and prospect

JIN Tao

2012, 34(S1): 38-41.

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The features of development history of electric power industry informatization were introduced，and the pointcut for combining of cloud computing platform with informatization was described. Combining with the example of application project of virtual office system, which is being popularized, the practical application of the concept of cloud computing was described. The obvious advantages of the cloud computing applied in electric power production were analyzed. The application prospect of the cloud computing in electric power industry was discussed.

Analysis on construction scheme of digitalized factory for distributed energy stations

BAO Xiaojun

2012, 34(S1): 42-43.

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The necessity and the feasibility of construction of digitalized factory for distributed energy stations were introduced. The integrated solution for factory management and control integration, in which the central task is asset management and the guiding idea is the equipment management in entire life cycle, was researched and discussed. Aiming at the features of the distributed energy stations, the application range of the field bus technology was divided and compared with the planning and construction of control system and informatization system of conventional power plant, which provides reference for similar power stations in informatization construction.

Improvement of protection of 9E gas turbine Mark V control system by double configuration

LI Honglian;WANG Huanhuan

2012, 34(S1): 44-46.

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The nonredundant protection items in the Mark V control system of the PG9171E gas turbine were analyzed. A concrete improvement scheme was proposed, and the double configuration of the protection items was realized. The operation stability of the whole unit was improved. The result of this paper can be used as reference for similar units in protection improvement by double configuration.

Analysis on reason of fracture of coupler bolt between gas turbine and gas compressor

QIAN Cheng

2012, 34(S1): 47-49.

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An accidental shutdown occurred in operation of the S109FA gas turbine of a power plant. By inspection, it was found that the coupler bolt between the gas turbine and the gas compressor fractured. According to analysis, the reason of the bolt fracture was determined as below, there was slight scratch on the bolt surface formed in transportation and installation processes, the element Cadmium gathered in the scratch area and caused the metal became brittle; and in operation, the too large vibration caused the crack extended and the bolt fractured at last.

Analysis on improvement scheme of configuration of current transformer and protection for smallcapacity transformer in 220kV system

WU Zhenghua;WANG Dongjue

2012, 34(S1): 50-51.

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The current transformer for the smallcapacity transformer in a 220kV system was configured improperly. When the fault occurred, the current transformer saturated seriously, which led the protection refused to trip or tripped incorrectly and caused the fault enlargement. In order to ensure the reliability of the protection, the current transformer and the protection configuration must be improved. Aiming at the difficulties in the improvement, the improvement scheme of the current transformer and the improvement scheme of the protection configuration were proposed. The implementation of the improvement schemes can increase the reliability of the protection greatly.
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Optimization of cooling system for turbine shell and exhaust frame of 9E gas turbine

JIN Peijun;WANG Huanhuan

2012, 34(S1): 52-55.

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Two cooling fans with 50% capacity for the turbine shell and exhaust frame were designed originally for the 9E gas turbine of Shanghai Fengxian Gas Turbine Power Generation Company Limited. If the frame cooling fans malfunctioned during operation of the gas turbine and caused the cooling air flow lose or decrease suddenly, then the heat conditions of the exhaust frame and the cylinder of the unit will vary, and the service life of the components in the thermal pass will be affected greatly. The cooling system for turbine shell and exhaust frame of the gas turbine and the Mark V control system were studied in depth. An optimization scheme, which is to add a domestic fan with 50% capacity, was adopted, and the hidden trouble of the system was removed.

Selection of grounding material for power plants

LI Shiwei

2012, 34(S1): 56-57.

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The traditional grounding material of domestic power plants mostly is sherardized flat steel, and the pure copper and copper plating steels are widely used as grounding material abroad. The sherardized flat steel and the copper plating round steel were compared in several aspects, such as the heat stability, the corrosion resistance, the grounding effect and the technology economy. The advantage of the copper plating round steel used in grounding grid was pointed out.

Analysis on configuration scheme of fault recorder for smallcapacity generatortransformer set

WU Zhenghua

2012, 34(S1): 58-59.

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In a power generation company, the dedicated fault recorder was not configured for the smallcapacity generatortransformer set, and this does not accord with the rule of the file DL/T 553—1994, ‘The technical criteria for transient fault recording in 220～500kV power system’. Therefore, several improvement plans were put forward. Various improvement plans were analyzed and compared with each other from many aspects, such as the analog variable connected into the fault recorder, the installation sites, the number of the fault recorders, the access positions of the analog variables and the length of the secondary cable. The best improvement plan was recommended and implemented.

Establishment and development of power generation enterprise standardization under new mode

SUN Lijun;LU Zhongwei

2012, 34(S1): 60-61.

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Aiming at the newbuilt new type power generation enterprises, which are simple and excellent, the way to effectively develop the enterprise standardization and to establish the enterprise standardization system was analyzed, and new ideas for developing enterprise standardization were proposed. The results in this paper provide reference for similar new type power generation enterprises in development of enterprise standardization.

Improvement measures of fixed assets management for gas turbine power plant

WU Xuan;LU Zhongwei

2012, 34(S1): 62-63.

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Some problems existed in a gas turbine power plant, which include that the value management is out of touch with the physical object management, the management mode is extensive, the straightlinemethod depreciation is used to account the depreciation of the fixed assets, but this method can not really reflect the wastage of the fixed assets. Aiming at abovementioned problems, three improvement measures of fixed assets management were proposed to improve the asset management level of the gas turbine power plant.
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Safety management of the outsourcing project of power generation enterprise under new management mode

YAO Yong

2012, 34(S1): 64-65.

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Along with the continuously rising of the labor cost, more and more newbuilt power generation enterprises outsource their business services other than the management functions. The experiences of an enterprise on safety management of outsourcing business service were analyzed and summarized. The problems existing in the safety management of the outsourcing projects were pointed out, and some control measures were proposed, which provide reference for similar power generation enterprises in safety management of their outsourcing projects.
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Problems existing in capital construction financial management of power generation enterprise and countermeasures

WANG Xiaoyan;WU Yao

2012, 34(S1): 66-69.

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For a power generation enterprise, to enhance the capital construction financial management can ensure and supervise rational utilization of the capital construction fund, prevent loss and squander, control the cost of the capital construction project and increase the investment benefit of the enterprise. The current situation of the main links of the capital construction financial management of a power generation enterprise, such as the fund raising, the project settlement, the materials management and the final account for completed project, and the problems existing in these links were analyzed. Some suggestions were put forward, which provide reference for relevant enterprises.
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Analysis on human resource management of Shanghai Fengxian Gas Turbine Power Generation Company Limited

WU Xiaoxian

2012, 34(S1): 70-71.

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Taking Shanghai Fengxian Gas Turbine Power Generation Company Limited as example, the features of human resource management under the simplified, higheffective and flat enterprise management mode were analyzed. Combining with the practical situation of ‘heavy task for less staffs’, a management thought of human resource management optimization and innovation and synchronous development of talent and enterprise was proposed. The management thought was implemented and good effect was obtained.

Analysis on optimization of human resource management for distributed energy power stations

ZHANG Yaohua

2012, 34(S1): 72-74.

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The basic state of Shanghai Huadian Xinzhuang Distributed Energy Power Station was introduced based on the gas turbine LM6000. The purpose of the optimization of human resource management was expounded. The basic employment mode of distributed energy power station was analyzed. The concrete measures for optimization of human resource management were put forward.

Brief analysis on function of enterprise culture in enhancing enterprise cohesion

WU Xiaoxian

2012, 34(S1): 75-76.

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The enterprise culture is precious potential intangible asset of an enterprise. The enterprise culture can mobilize staff activity fully, embody the core value and competitiveness of an enterprise, promote sustainable development of the enterprise, improve the enterprise image, create distinctive enterprise atmosphere and enhance enterprise cohesion.

Reformation of continuous emission monitoring system for denitration flue gas of 660MW ultra supercritical unit

ZANG Xudong

2012, 34(S1): 77-80.

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The measurement principle and the system composition of the denitration flue gas continuous emission monitoring system (CEMS) were introduced. The features and applicable places of the direct inserting type analyzer and the extract type analyzer were analyzed. The common faults, the existing problems in operation and the maintenance characteristics of CEMS were expounded.

Comparison of traditional boiler makeup water treatment process with membrane method treatment process

YE Xiaowei;HUA Jingfang

2012, 34(S1): 81-82.

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The boiler makeup water system of a power plant is an important auxiliary system for safe operation of the power plant. The quality of makeup water influences on the stable and reliable operation of the unit directly. By analysis of practical example, the traditional process and the membrane method process of boiler water treatment system were compared with each other. The advantages of the membrane method process were summarized and concrete suggestions were given.

Comparison between gas distributed system heat supply scheme and separated gas boiler heat supply scheme

HUA Jingfang;YE Xiaowei

2012, 34(S1): 83-85.

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The gas distributed system centralized heat supply scheme and the gas boiler heat supply scheme were compared with each other. The energy efficiency, the environment protection performance, the economic efficiency and the development prospect of the two schemes were analyzed. According to the analysis, it was considered that in the reformation of substituting for middle and small coalfired heatsupply boilers by clean energy sources, it is more advantageous to select scheme of the gas distributed system centralized heat supply.

Research on technical scheme of biomass power generation project in Shanghai Chongming

XU Zhonghua

2012, 34(S1): 86-88.

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In order to realize the beginning of the biomass energy project in Shanghai, the Shanghai Branch of China Huadian Corporation plans to construct the agricultural wastes comprehensive processing and use center in the Chongming Country of Shanghai and to construct a biogas power generation project by use of the straw and the livestock excrement. The biomass energy resources of the Chongming Country and utilization situation were analyzed. The process flow of biogas preparation, the centralized biogas supply and the power generation was introduced, and the design schemes of various systems were described. After the completion of the project, the biological resources will be utilized effectively, and the environmental quality will be improved.

Research on arrangement mode of modules of fixed photovoltaic array

GU Juming

2012, 34(S1): 89-90.

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The arrangement mode of the basic units of the photovoltaic array (photovoltaic modules) was analyzed. The relationship of the geographic latitude with the interval between rows of the array, the optimum tilted angle of the array and the shadow coefficient was found by calculation. A conclusion was obtained that in selection of the modules arrangement mode of a photovoltaic array, must give certain priority to the scheme of vertical arrangement.

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