CN104090560B - Device monitoring power supply integrated environment evaluation indexes - Google Patents

Device monitoring power supply integrated environment evaluation indexes Download PDF

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Publication number
CN104090560B
CN104090560B CN201410341547.8A CN201410341547A CN104090560B CN 104090560 B CN104090560 B CN 104090560B CN 201410341547 A CN201410341547 A CN 201410341547A CN 104090560 B CN104090560 B CN 104090560B
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China
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power plant
steam
integrated environment
environment evaluation
value
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CN201410341547.8A
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Chinese (zh)
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CN104090560A (en
Inventor
杜宝龙
张耀
刘振宏
张强
杜天乐
裴志亮
杨飞
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内蒙古云谷电力科技股份有限公司
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Priority to CN201410188324.2 priority
Priority to CN2014101883242 priority
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Priority to CN201410341547.8A priority patent/CN104090560B/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

Abstract

The invention provides a device monitoring power supply integrated environment evaluation indexes. The device comprises a central controller, a display unit, a remote sensor unit, a transmission system and an alarm system. The remote sensor unit senses operating parameters of components of a thermal power plant. The transmission system converts measured values obtained through sensing into standard electrical signals and uploads the electrical signals to the central controller. The central controller conducts computing processing on the uploaded parameter electrical signals, carries out evaluation on the overall integrated environment evaluation indexes of the thermal power plant, judges whether the integrated environment evaluation indexes of the thermal power plant reach the standard or not, and transmits an alarm signal to the alarm system if the integrated environment evaluation indexes of the thermal power plant exceed predetermined values. An alarm is triggered, and abnormal components and abnormal parameters of the abnormal components are displayed on the display unit.

Description

A kind of equipment of monitoring power supply integrated environment evaluation index
Technical field
The present invention relates to a kind of equipment of monitoring power supply integrated environment evaluation index, belong to steam power plant certainly Autocontrol system.
Background technology
It is known that problem of environmental pollution has become as the major issue of restriction China economic development, In the energy-consuming of China, consumption of coal accounting is very high, and particularly, China is to be with coal generating Main country, annual coal for power generation accounts for the half of China's annual coal total amount.Coal-burning power plant is producing While electric energy, also result in the dirts such as flue dust, sulfur dioxide, carbon dioxide, nitrogen oxides and waste water A large amount of discharges of dye thing.At present, coal-burning power plant often runs warp using net coal consumption rate as examination power plant The final index of Ji property, and net coal consumption rate does not have consideration power plant and runs to the dirt caused by environment Dye, do not account for yet water resource use value the problems such as.With China's power plant for energy conservation Mitigation options Carry out and power system is separated the factory and network, the progressively enforcement of measure of surfing the Net at a competitive price, if still with traditional confession Electric coa consumption rate as performance assessment criteria, or as optimal power plant operation and rate for incorporation into the power network quotation according to According to, not only do not meet reality, nor be beneficial to the improvement of environment and the improvement of pollutant, so should This seeks a kind of equipment of monitoring steam power plant environmental economy index, and dynamically to adjust thermoelectricity with this The operation of factory, thus accomplish that saving energy, lowering energy consumption and reducing pollutants discharge reduce pollution.
Content of the invention
The expense of steam power plant's electrical energy production is divided into energy cost, non-energy expense and environmental hazard Expense three part.Steam power plant produces electric energy and will consume fuel and water resource, here it is during thermoelectric power produces Energy cost part;In order that steam power plant is normal running it is necessary to have the depreciation of factory building and equipment, dimension Repair, manage and the wage of personnel, bonus, welfare etc., here it is so-called non-energy expense;Thermoelectricity Waste water, waste gas and waste residue can be had in producing to discharge, constitute environmental pollution expense.
Mainly consider energy cost part and the environmental pollution cost components of steam power plant in the present invention, And this two expenses are analyzed from the operational factor of steam power plant draw, evaluated.Invention is main Scheme is as follows:
Scheme one:
A kind of equipment of monitoring power supply integrated environment evaluation index, including:Central controller, display Unit, distance sensor unit, pick-up Transmission system and warning system;Wherein distance sensor list The operational factor of each part of sensing steam power plant of unit, pick-up Transmission system will sense the measured value conversion coming Upload to central controller for standard electric signal, central controller is to the parameter telecommunications transmitting on these Number carry out calculating process, and full factory of steam power plant integrated environment evaluation index is made with evaluation, judge heat Whether power plant's integrated environment evaluation index is up to standard, if steam power plant's integrated environment evaluation index exceeds in advance Definite value then sends alarm signal to warning system, and siren triggers, and shows on the display unit Go out exceptional part and its anomaly parameter, the wherein calculating of central controller and logical process mainly includes:
The first step:Based on steam turbine internal power Wi, the absolute internal efficiency η of steam turbinei, boiler thermal effect Rate ηb, pipeline efficiency etap, steam turbine mechanical efficiency ηmWith generator efficiency ηg, calculate full factory heat Efficiency etacp, wherein:
W i = Σ j = 1 z D j Δ h j + D c Δ h c
In formula:WiFor steam turbine internal power, KJ/h;Dj、DcBe respectively regenerative steam flows at different levels, The solidifying throughput of exhaust condenser, kg/h;Δhj、ΔhcIt is respectively the streams that draw gas at different levels, condensing stream exists Actual enthalpy drop in steam turbine, Kj/kg;Z is regenerative steam series;
η i = W i Q 0
In formula:Q0For the heat consumption of steam turbine, KJ/h;
ηcpbηpηiηmηg
In formula:ηbFor boiler thermal output, ηpFor pipeline efficiency, ηmFor steam turbine mechanical efficiency, ηgFor Generator efficiency;
Second step:Full factory coal consumption amount B is calculated based on plant thermal efficiency, and is calculated according to stock coal price The energy cost C of fuel1
B = 3600 P e η cp Q net , ar
In formula:PeFor the electrical power of Turbo-generator Set, kW;QNet, arLow for steam power plant's coal Position caloric value, kJ/kg;
3rd step:The row of the flue dust, sulfur dioxide and nitrogen oxides of on-line real time monitoring smoke evacuation tail gas To one's heart's content condition, determines the major pollutants content of smoke evacuation tail gas, and containing according to these major pollutants Amount and charges for disposing pollutants collecting standard calculate charges for disposing pollutants C2
4th step:Determine integrated environment evaluation index D of steam power plant with following formula:
D = C 1 + C 2 P e ;
5th step:Judge the environmental economy implementations that steam power plant runs, make a reservation for when D value is more than first During value, judge during now steam power plant operates in beyond design and operation expense, be in uneconomical and not The state of environmental protection;
6th step:Check boiler, pipe network and pump, superheater or reheater, steam turbine item by item, send out The operation ginseng of the projects such as motor, condenser or heat exchanger, economizer, tail gas treatment device and tail gas Number, by tabling look-up design load with corresponding parameter or history reference value is compared, if these are transported There is no there is more than the preset percentage value beyond design load or history reference value in line parameter, keep Steam power plant normally runs;If there is the operational parameter value of at least one in these parameters beyond setting More than the preset percentage value of evaluation or history reference value, then relevant parameter and associated components Status display sends alarm signal in display unit and to alarm, reminds staff to note phase Close the state of part.
7th step:After maintenance, system initially enters next circulation from the first step again.
Scheme two:
Monitor the equipment of power supply integrated environment evaluation index according to scheme 1, described integrated environment is commented The preset percentage value of the design load of valency index D and each parameter or history reference value can be according to difference Regional laws and regulations regulation be adjusted arrange, if strictly can be above-mentioned to environmental requirement It is lower that numerical value is arranged, if loosely can be the height of above-mentioned numerical value setting a bit to drop to environmental requirement The sensitivity of low system.
Scheme three:
The equipment of integrated environment evaluation index of being powered according to the monitoring of scheme 1, follows entering the next one Before ring, in the memory of central controller, record maintenance part adds up maintenance number of times and puts on record conduct One of parameter of alarm indication.
Scheme four:
The equipment of integrated environment evaluation index of being powered according to the monitoring of scheme 1, maintenance therein includes Maintenance during on-bne repair and overhaul.
Scheme five
The equipment of integrated environment evaluation index of being powered according to the monitoring of scheme 1, wherein can be to environment The deviation range of the preset percentage value of the design load of evaluation index D and each parameter or history value is carried out Artificial setting, for example, be set to 10%, 15% etc..
Additionally, at present, thermal power plant's exhaust emission mainly imposes sulfur dioxide (SO2), nitrogen oxides (NOx) and 3 charges for disposing pollutants of flue dust.Ash flushing water pollution main collection suspension (SS), chemistry need Oxygen amount (COD) and 3 charges for disposing pollutants of total arsenic.Charges for disposing pollutants are with according to the species discharging pollutants, quantity Calculated with pollutional equivalent and impose, according to The Ministry of Finance of the People's Republic of China, MOF and State Environmental Protection Administration Formulate《Collection of drainage dues standard and computational methods》Carry out pollutant expense calculating, and various Every equivalents expenses standard of pollutant can be according to the regulation of local laws and regulations before system startup Central controller is inputted by way of parameter setting.
The equivalents of pollution charges use=this pollutant of certain pollutant × every equivalents expenses standard.
Mainly consider the equivalents of air pollution emission thing in the present invention, if necessary or possible If the major pollutants of water pollution can also be accounted for scope.
Brief description
Fig. 1 is typical geothermal Power Station crew qiting figure;
Tu2Shi steam power plant system cost balance chart;
Tu3Shi steam power plant actual motion expense evaluates control system figure;
Tu4Shi steam power plant actual motion expense is evaluated and is run block diagram.
Specific embodiment
For making the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with the accompanying drawings The embodiment of the present invention is described in further detail.Here, the illustrative examples of the present invention and its Illustrate for explaining the present invention, but not as a limitation of the invention.
The present embodiment be a kind of equipment of monitoring steam power plant integrated environment evaluation index it should be pointed out that It is that the present embodiment is steam power plant's integrated environment to be powered as in the present invention a kind of tool of integrated environment Body embodiment.
Fig. 1 represents the steam power plant 1 including some turbine section, and they are directed to different pressure design. These turbine section are arranged on common axle 5 in series.
In order to run, water heats in steam boiler 7 and passes through live steam superheater 9 generation steam. Superheated steam introduces high-pressure turbine section 13 as working steam by pipeline, and steam there expands. After expanding in high-pressure turbine section 13, some vapor introduces middle mistake by the first cross over pipe 14 Hot device 15, there reheats, and is then introduced in double-flow middle-pressure steam turbine section 17.Steam exists Here reexpand, until regulation, now relatively low stress level.
Then, it expand into the steam of lower pressure levels in middle-pressure steam turbine section 17, by connecting The second cross over pipe 21 to be introduced into be equally in double-flow low-pressure turbine section 25.
Drive the generator 29 producing electric current by public axle 5.Low pressure is left after expanding and cooling down The steam of turbine section 25 flows in condenser 31, and it is there by passing to ring around by heat Border and condense, and collect as the water of liquid.By condensate pump 33, by water intermediate storage In feed-tank 37, then pass through feed pump 39 and preheater 35 supplies steam boiler 7 again.Its Middle preheater 35 can be economizer, recycle through the exhaust ventilation that boiler flows out and exhaust-gas treatment sets Discharge from chimney 71 after standby.
After expansion stages, extraction steam pipe 41, after high-pressure turbine section 13 expansion stages, is exactly pressed Flow technique, before intermediate superheater 15, is connected with high-pressure turbine section 13.By this extraction steam pipe 41 is the steam after expansion high-pressure turbine section 13 required for system extracts for the customer 49.
Extraction steam pipe 41 import expander 43 in, expander thus be connected with high-pressure turbine section 13. Expander 43 is designed as single expansion turbine 44, and the second generator 45 is attached thereto.Extract Steam do work for total system inside expansion turbine 44, perfect condition expand into customer 49 Desired level (pressure, temperature).Replace generator it is also possible to arranging or connecting the machinery being suitable for Can customer.
Will be direct further through industrial steam pipe 47 for the factory steam after expanding from expansion turbine 44 Introduce customer 49.It is for example designed as fuel treating equipment or is designed as flue gas processing device.Single Only expansion turbine 44 is used in back pressure operation.In this case, in the final state expanding Point directly corresponds to required factory steam pressure, therefore expansion turbine 44 ideally as far as possible Customer 49 for connecting provides the pressure and temperature level needing.
Additionally, optionally the heat supply of steam power plant is reclaimed not only from the condensation in exhaust steam in steam turbine Heat is it is also possible to change from drawing gas or directly entering from the steam of boiler extraction in steam turbine intergrade Hot device is with to heat supply network heat supply.Only condense to heat supply network heat supply from exhaust steam in the example depicted in fig. 1.
Tu2Shi steam power plant system cost balance chart.As can be seen from the figure the expense of Hazards in Power Plant The fuel that input is predominantly used for fuel cost inputs 201 expenses and for steam power plant's day-to-day operation Operating cost 202, the capital cost of output can be divided into heat to export 204 expenses, electric energy output 205 expenses and blowdown export 206 expenses.Certainly here, described input and output are from energy stream Angle considering, and substantially, fuel input expense, operating cost, blowdown output expense are all Need outwards to pay expense realization, these projects are negative incomes, be cost-effectivenes expenditure;And heat is defeated Go out expense and electric energy exports the launch that expense is that steam power plant powers with heat supply network heat supply gained to electrical network Return property income, accrued for just taking in.
Tu3Shi steam power plant actual motion expense evaluates control system schematic diagram.Central controller 303 Receive from boiler 7, pipe network and pump, superheater 9, steam turbine 13,17,25, generator 29, The sensor of condenser 31, economizer 35, tail gas treatment device 49, tail gas etc. is examined to these parts Survey the parameter of gained, central controller is processed to these parameters, and calculates the reality of steam power plant Border operating cost, is then compared with actual motion expense and design and operation expense, when actual fortune When the numerical value of row expense is higher than the 5% of design and operation expense, to the parameter of all parts one by one than To and judge, find out poor efficiency or damage part, and corresponding component and corresponding parameter are shown On display unit 205, send alarm signal to siren 304, siren is reported to the police, remind work Overhauled as personnel and safeguarded.
Additionally, central controller accepts the input of external stability parameter, such as design data parameter record Enter other settings 302 of the data setting of 301 and such as ature of coal parameter etc..
Tu4Shi steam power plant actual motion expense is evaluated and is run block diagram, first on central controller In-put design parameter and Initialize installation 401 is carried out to system, then in the control of central controller Under, distal sensor measurement parameter 402 is read in collection from each part:Including coal-supplying amount, bed drain purge, Deslagging temperature, boiler feed temperature, main steam enthalpy, reheated steam enthalpy, extraction temperature, pressure of drawing gas Power, exhaust enthalpy of turbine, heat exchanger heat exchange amount, condenser heat exchange amount, each pipeline pressure and crushing, Generator speed, generator power, exhaust temperature, tail gas humidity, tail gas contain amount of sulfur dioxide, Tail gas nitrogen-containing oxide amount, tail gas fume amount etc.;After having gathered above-mentioned data, central controller Steam power plant's energy cost and steam power plant's environmental costs 403 are calculated based on data;Calculate steam power plant again Actual motion expense 404, and the comprehensive ring of steam power plant is calculated according to the actual motion expense of steam power plant Border evaluation index;Compare steam power plant's actual motion expense using actual integrated environment evaluation index With design and operation expense 405;Actual motion expense and design and operation expense is judged in the 406th step Whether departure degree, see actual motion expense more than the 5% of design and operation expense;If actual motion Expense is greater than the 5% of design and operation expense, carries out operation exception situation judgement;In the 407th step Check the parameter of steam power plant's all parts, parameter and the corresponding design parameter of described all parts Compare, see whether actual parameter deviates from design parameter more than 5%;In the 408th step, find out Anomaly parameter, is shown in relevant parameter in display unit and sends alarm signal to alarm;? In 409th step, online or maintenance down or replacing extremely or damage part;Otherwise keep steam power plant Run.
It is understood that those skilled in the art can be carried out to the departure degree of above-mentioned index Change setting, for example, can be 5% or 10%, 15% etc., these settings can be in step Complete in Initialize installation in 401.
Although an embodiment of the present invention has been shown and described, for the ordinary skill people of this area It is possible to understand that without departing from the principles and spirit of the present invention can be real to these for member Apply example and carry out multiple changes, modification, replacement and modification, the scope of the present invention is by claims And its be equal to limit.

Claims (1)

1. the equipment of a kind of monitoring steam power plant integrated environment evaluation index, including:Central controller, display are single Unit, distance sensor unit, pick-up Transmission system and warning system;Wherein distance sensor unit senses thermoelectricity The operational factor of each part of factory, the measured value that sensing comes is transformed to standard electric signal and uploads to by pick-up Transmission system Central controller, central controller carries out calculating process to the parameter electric signal transmitting on these, and to steam power plant Full factory integrated environment evaluation index makes evaluation, judges whether steam power plant's integrated environment evaluation index is up to standard, if Steam power plant's integrated environment evaluation index exceeds predetermined value and then sends alarm signal to warning system, and siren triggers, And show abnormality part and its anomaly parameter on the display unit, wherein the calculating of central controller and logic Process main inclusion:
The first step:Based on steam turbine internal power Wi, the absolute internal efficiency η of steam turbinei, boiler thermal output ηb、 Pipeline efficiency etap, steam turbine mechanical efficiency ηmWith generator efficiency ηg, calculate plant thermal efficiency ηcp, wherein:
W i = Σ j = 1 z D j Δh j + D c Δh c
In formula:WiFor steam turbine internal power, KJ/h;Dj、DcIt is respectively regenerative steam flows at different levels, exhaust The solidifying throughput of condenser, kg/h;Δhj、ΔhcIt is respectively the streams that draw gas at different levels, condensing stream in steam turbine Actual enthalpy drop, Kj/kg;Z is regenerative steam series;
η i = W i Q 0
In formula:Q0For the heat consumption of steam turbine, KJ/h;
ηcpbηpηiηmηg
In formula:ηbFor boiler thermal output, ηpFor pipeline efficiency, ηmFor steam turbine mechanical efficiency, ηgFor generating electricity Engine efficiency;
Second step:Full factory coal consumption amount B is calculated based on plant thermal efficiency, and fuel is calculated according to stock coal price Energy cost C1
B = 3600 P e η c p Q n e t , a r
In formula:PeFor the electrical power of Turbo-generator Set, kW;Qnet,arFor the low heat valve of steam power plant's coal, kJ/kg;
3rd step:The emission behaviour of the flue dust, sulfur dioxide and nitrogen oxides of on-line real time monitoring smoke evacuation tail gas, Determine the major pollutants content of smoke evacuation tail gas, and the content according to these major pollutants and charges for disposing pollutants are levied Receive criterion calculation charges for disposing pollutants C2
4th step:Determine integrated environment evaluation index D of steam power plant with following formula:
Wherein C1Represent energy cost, C2Represent charges for disposing pollutants to use;
5th step:Judge the environmental economy implementations that steam power plant runs, when D value is more than first predetermined value, sentence During now steam power plant operates in beyond design and operation expense calmly, it is in uneconomical and not environmentally state;
6th step:Check boiler, pipe network and pump, superheater or reheater, steam turbine, generator, cold item by item Condenser or the operational factor of heat exchanger, economizer, tail gas treatment device and tail gas, by tabling look-up and corresponding parameter Design load or history reference value be compared, if not existing beyond design load in these operational factors or going through More than the preset percentage value of history reference value, steam power plant is kept normally to run;If existed at least in these parameters The operational parameter value of one beyond the preset percentage value of design load or history reference value more than, then corresponding The status display of parameter and associated components sends alarm signal in display unit and to siren, reminds work people Member notes the state of associated components;
7th step:After maintenance, system initially enters next circulation from the first step again.
CN201410341547.8A 2014-05-06 2014-07-16 Device monitoring power supply integrated environment evaluation indexes CN104090560B (en)

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CN105715318B (en) * 2016-04-12 2017-04-26 浙江大学 Comprehensive waste heat utilization evaluation method on basis of industrial steam turbine and comprehensive waste heat utilization device
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Inventor after: Pei Zhiliang

Inventor after: Yang Fei

Inventor before: Li Qinqin

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