CN102541036B - Intelligent fire coal scheduling system for thermal power plant - Google Patents
Intelligent fire coal scheduling system for thermal power plant Download PDFInfo
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Abstract
The invention provides an intelligent fire coal scheduling system for a thermal power plant. The system comprises an on-line coal inventory unit, a material piling and taking machine unit, a coal conveying unit, a coal bin unit and a system server, wherein the system server comprises an intelligent material piling calculation module, an intelligent coal distributing and feeding calculation module, and a material taking decision module; the intelligent material piling calculation module determines the optimal coal piling position to guide the material piling and taking machine unit to complete coal piling; the intelligent coal distributing and feeding calculation module is used for receiving coal inventory information of the on-line coal inventory unit and the real-time state of a boiler unit, determining a coal distribution scheme according to the coal inventory information and the real-time state of the boiler unit and further determining a coal feeding scheme according to boiler characteristics and the coal distribution scheme; and the material taking decision module determines a material taking path according to the coal inventory information and the coal feeding scheme to guide the material piling and taking machine unit and the coal conveying unit to cooperatively complete material taking. The fire coal of the thermal power plant is subjected to full-life cycle management and intelligent scheduling, and the boiler unit is ensured to have high safety, economy and environment friendliness under the condition of co-combustion.
Description
Technical field
The invention belongs to the production scheduling technical field of fuel-burning power plant, be specifically related to a kind of Intelligent fire coal scheduling system for thermal power plant and control method.
Background technology
China is the country take coal as main energy sources, and coal resources occupy consequence in Chinese primary energy structure.In China Power industry consists of, occupy the proportion more than 80% take fire coal as main thermoelectricity, and in significant period of time, the variation that this structure can essence.Yet the coal resources in China skewness, the coal washing rate is low, and price volalility is larger, and communications and transportation pressure is large, and coal market supply conditions growing tension so that many power plant can't use the design coal of boiler, is mixed burning and can only adopt multiple coal to carry out fire coal.
For power plant, the enforcement that fire coal is mixed burning is a system works, will relate to all many-sides such as the purchasing coal, deposit coal of Power Plant Fuel, defeated coal, coal blending, upper coal, burning, whole many equipment and the systems such as comprising coal yard, coal handling system, pulverized coal preparation system, boiler, out of stock, dedusting and desulphurization system in the flow process of burning of mixing.And mixing under the condition of burning, boiler is in fact a kind of non-design coal fired state, if the not science of burning scheme of mixing of choosing, may cause safety in operation to descend, boiler efficiency reduces and pollutant emission increases, simultaneously, if to the monitoring of the coal of fire coal with manage lack of standardization, the situation that mistaken coal occurs, also may cause above these problems, therefore, power plant soot is mixed the science of burning work and is implemented, need on the one hand correct choosing to mix the burning scheme, need to carry out to fire coal management and the scheduling of standard on the one hand.
In the published patented technology of the art, the patent that the patent No. is called " fuel entry and exit factory unattended system of thermal power plant " for " 200920152024.3 " name provides the automated management system of Power Plant Fuel, but only the turnover of coal yard is managed; The patent No. be called for " 200910040520.4 " name " a kind of method of mixing and burning sludge by pulverized coal furnace " technology introduction a kind of coal and mud mix the method for burning, do not relate to Optimal Decision-making and the management layer determining and burn of mixed-fuel burning proportion.
Summary of the invention
The object of the present invention is to provide a kind of Intelligent fire coal scheduling system for thermal power plant, this system can carry out to power plant soot management and the intelligent dispatch of Life cycle, guarantees that the boiler unit possesses higher security, economy and the feature of environmental protection mixing under the burning condition.
A kind of Intelligent fire coal scheduling system for thermal power plant is included in drum coal unit, stacker-reclaimer unit, defeated coal unit, coal bunker unit and system server;
Described drum coal instrument and the dish coal controller of being included in drum coal unit, described dish coal controller receives the dish coal instruction of described system server, under described dish coal instruction effect, be controlled at the work of described drum coal instrument, and calculate the coal piling total amount according to described coal piling position, coal and coal piling shape in drum coal instrument feedback, described coal piling position, coal and coal piling total amount are passed to described system server;
Described stacker-reclaimer unit comprises stacker-reclaimer and stacker-reclaimer controller, described stacker-reclaimer controller receives the windrow instruction of described system server, the instruction of described heap feeding carries best coal piling positional information, the described stacker-reclaimer of control is finished new optimum position stacking to coal under described heap feeding instruction effect, and the coal piling positional information of reality is fed back to described system server; Described stacker-reclaimer controller also receives the feeding instruction of described system server, described feeding instruction carries feeding approach information, under described feeding instruction effect, cooperate with described defeated coal unit and finish the feeding operation, and feeding position and the feeding amount of reality fed back to described system server;
Described defeated coal unit comprises coal conveyer belt, coal plough, coal plough state sensor and coal conveying device, described coal conveyer belt is connected between the travelling belt and coal bunker of described stacker-reclaimer unit, and described coal plough is installed between described coal conveyer belt end and the coal bunker; Described stacker-reclaimer unit receives the feeding instruction of described system server, coal is sent arrived the coal conveyer belt end, and coal plough turns to the working position under the defeated coal instruction control of system server, finish to the coal bunker coal;
Described coal bunker unit comprises a plurality of coal bunkers, feeder and coal level meter, and a feeder is laid in the below of each coal bunker, and a coal level meter is installed in the top of each coal bunker; Described feeder is used for to the boiler coal supply, and described coal level meter is surveyed the coal position height in the coal bunker, if the coal position highly reaches alarming value, then sends warning message to coal plough and stops coal;
Described system server comprises intelligent windrow computing module, intelligent coal blending and upper coal computing module, feeding decision-making module;
Described intelligent windrow computing module is used in the instruction of drum coal unit transmission dish coal, is received in coal piling position, coal and the coal piling total amount of drum coal unit, determines that according to coal piling position and coal piling total amount thereof current coal piling operates optional idle coal piling position; According to carrying out the best coal piling position that windrow makes a strategic decision to choose coal when come coal coal, optional idle coal piling position and predetermined windrow rule, and the windrow instruction that will comprise best coal piling positional information sends the stacker-reclaimer unit to;
Described intelligent coal blending and upper coal computing module are used for being received in the coal of drum coal unit and the real-time status of boiler unit, determine Coal Blending Schemes according to the real-time status of coal and boiler unit, and then determine upper coal scheme according to boiler characteristics and Coal Blending Schemes;
Described feeding decision-making module, be used for receiving described coal piling position in drum coal unit, coal and coal piling total amount, and the upper coal scheme of described intelligent coal blending and upper coal computing module, determine the feeding approach according to described coal piling position, coal, coal piling total amount and upper coal scheme, and stacker-reclaimer unit and defeated coal unit are passed in the feeding instruction that will carry feeding approach information; The feeding decision-making module also is used for receiving the actual feeding position of described stacker-reclaimer unit feedback and feeding amount with the coal information of depositing of real time modifying coal yard, thereby guarantees to deposit real-time and the integrality of coal information;
Further, described windrow rule comprises the close rule of ature of coal, evenly stacks rule and taboo heap rule, and the close rule of described ature of coal is the close stacking of the close coal of ature of coal; The coal piling amount that described even stacking rule is different coal yards is as far as possible identical; Described taboo heap rule is forbidden coal piling for certain interval of coal yard or coal yard.
Further, the specific implementation of described intelligent coal blending and upper coal computing module is: according to the current real time execution parameter of depositing coal coal and boiler of all coal yards, analyze the coupled characteristic between coal and the boiler, take boiler to the adaptability of ature of coal as boundary condition, calculate satisfactory Coal Blending Schemes, Coal Blending Schemes comprises mixed coal and adds the storehouse ratio, adds the quantity that the storehouse ratio refers to coal bunker that coal adds; Then select the optimum coal mixture scheme scheme take boiler safety, burning highly effective rate and low pollutant emission as the target optimizing; After the optimum coal mixture scheme scheme is determined, determine according to boiler characteristics which coal bunker is upper coal scheme be about to enter on any coal.
Further, the feeding approach in the described feeding decision-making module take the reclaimer total kilometres the shortest or nearby feeding determine as criterion.
Further, described system comprises that also operation optimizes module, is used for the real-time status according to boiler, is optimized take boiler safety, high-level efficiency, low emission as the coal-supplying amount of target to each feeder.
Further, described system comprises that also intelligence purchases the coal recommending module, is used for analyzing the coal-fired storage of coal yard and distribution of coal sorts, and according to the price situation of current coal market, analysis-by-synthesis provides the optimum coal of buying.
Come the stowed location of coal by rational selection, control pilling up time and Real Time Monitoring coal yard guarantee that coal yard deposits the security of coal, prevent spontaneous combustion, reduce the calorific value loss; By Optimized Coal Blending, ensure that boiler is to the needs of coal ature of coal and the security of boiler operatiopn; By intelligent selection feeding position, guarantee the economy of coal yard feeding, and the security of stacker-reclaimer; By coal scheme in the rational arrangement, and Real Time Monitoring enters the stove coal, in conjunction with the burning optimization algorithm, guarantees higher burning efficiency and lower pollutant emission.
The invention provides a kind of conduction factory fire coal that is used in reference to and mix the intelligent dispatching system of burning, for the power plant soot scheduling provides conductive suggestion, specifically comprise windrow, coal blending, upper coal and the feeding of power plant.By to the integrated scheduling of fire coal with follow the tracks of comprehensively, guarantee that the boiler unit possesses higher security, economy and the feature of environmental protection mixing under the burning condition.The technology of the present invention effect is embodied in:
1) with computing machine the links in the power plant soot scheduling process is carried out the intellectuality decision-making, replace loaded down with trivial details manual decision's flow process, reduce the decision-making time, increase work efficiency;
2) will pile the feeding decision-making and link to each other with the stacker-reclaimer controller, can make up unified heap feeding operating platform;
3) coal yard coal and coal quality control combine with the boiler demand, by rational coal mixing combustion, guarantee the boiler stable and high effective operation in complicated coal condition, mix burning by optimization simultaneously, ensure security and economy that coal yard is deposited coal;
4) monitoring of coal bunker coal is included in the coal-fired scheduling process, can be grasped more accurately into stove coal information, for burning optimization provides reliable basis;
5) intelligent coal blending is calculated based on a large amount of theoretical researches, considers security, economy and the feature of environmental protection.
Description of drawings
Fig. 1 is system architecture synoptic diagram of the present invention;
Fig. 2 is windrow decision-making module synoptic diagram
Embodiment
Describe in detail below in conjunction with drawings and Examples.
As shown in Figure 1, native system structure framework is divided into three layers: orlop is hardware device level, comprises the existing equipment of power plant and the equipment and the sensor that increase as required, specifically is included in drum coal unit, stacker-reclaimer unit, defeated coal unit and coal bunker unit; The second layer is the information interaction layer, comprise the dish coal information that is transmitted to server by dish coal instrument, the heap feeding information that stacker-reclaimer transmits to server, windrow decision-making and feeding decision-making that the coal position information that the coal bunker unit transmits to defeated coal unit and server are assigned to stacker-reclaimer, upper coal scheme and feeding decision-making that server transmits to defeated coal unit; The 3rd layer is to calculate decision-making level, comprises intelligent windrow computing module, intelligent coal blending and upper coal computing module, feeding decision-making module.Calculating decision-making level and information interaction layer operates on the system server.
Native system comprises: in drum coal unit, stacker-reclaimer unit, defeated coal unit, coal bunker unit and system server.
Be included in drum coal instrument and dish coal controller in drum coal unit.The dish coal instruction of dish coal controller receiving system server, under dish coal instruction effect, be controlled at the work of drum coal instrument, and calculate the coal piling total amount according to coal piling position, coal and the coal piling shape in drum coal instrument feedback, and system server is passed in coal piling position and coal piling total amount thereof.The coal piling position refers to the coal piling interval of the coal yard of current coal piling operational correspondence.
The stacker-reclaimer unit comprises stacker-reclaimer and stacker-reclaimer controller.The windrow instruction of stacker-reclaimer controller receiving system server, the instruction of heap feeding carries best coal piling positional information, the control stacker-reclaimer is finished new optimum position stacking to coal under heap feeding instruction effect, and the coal piling positional information of reality is fed back to server; The stacker-reclaimer controller is the feeding instruction of receiving system server also, and the feeding instruction carries feeding approach information, and the stacker-reclaimer controller cooperates with defeated coal unit and finishes the feeding operation, and feeding position and the feeding amount of reality fed back to system server.
Defeated coal unit comprises coal conveyer belt, coal plough, coal plough state sensor and coal conveying device.Coal conveyer belt is connected between the travelling belt and coal bunker of stacker-reclaimer unit, is is generally connected and composed by the multichannel belt.Coal plough is installed between last road belt and the coal bunker.The stacker-reclaimer unit receives the feeding instruction, coal is sent arrived last road coal conveyer belt, and coal plough turns to the working position under the defeated coal instruction control of system server, finish to the coal bunker coal.
The coal bunker unit comprises a plurality of coal bunkers, feeder and coal level meter, and a feeder is laid in the below of each coal bunker, and a coal level meter is installed in the top of each coal bunker.Feeder is used for to the boiler coal supply.When coal conveyer belt during to the coal bunker coal, coal level meter is surveyed the coal position height in the coal bunker, if the coal position highly reaches alarming value, then sends warning message to coal plough and stops coal.
System server comprises intelligent windrow computing module, intelligent coal blending and upper coal computing module, feeding decision-making module.
Intelligence windrow computing module is received in coal piling position, coal and the coal piling total amount thereof of drum coal unit in the instruction of drum coal unit transmission dish coal, determines that according to coal piling position and coal piling total amount thereof current coal piling operates optional idle coal piling position; According to carrying out the windrow decision-making when the coal coal of coming, optional coal piling position and windrow rule, choose the best coal piling position of coal, and the windrow instruction that will comprise best coal piling positional information sends the stacker-reclaimer unit to.The windrow rule generally includes the close rule of ature of coal, evenly stacking rule, prohibits heap rule etc.The close rule of ature of coal is: the close stacking of the coal that ature of coal is close; Evenly stacking rule is: the coal piling amount of different coal yards is as far as possible identical; Prohibit the heap rule and forbid coal piling for certain interval of certain coal yard or certain coal yard.Use to prohibit successively heap rule, the close rule of ature of coal and evenly stack rule optional idle coal piling position is filtered, finally determine best coal piling position.
Intelligence coal blending and upper coal computing module calculate Coal Blending Schemes and the upper coal mode of boiler the best according to the real-time status of boiler unit.The computing method of intelligence coal blending and upper coal computing module are: the current real time execution parameter of depositing coal situation and boiler that reads first all coal yards, analyze the coupled characteristic between all coals of coal yard and the boiler, take boiler to the adaptability of ature of coal as boundary condition, calculate satisfactory Coal Blending Schemes, Coal Blending Schemes comprises mixed coal and adds the storehouse ratio, adds the quantity that the storehouse ratio refers to coal bunker that coal adds.All Coal Blending Schemes consist of the decision domain of intelligent coal blending and upper coal computing module, then select best Coal Blending Schemes take boiler safety, burning highly effective rate and low pollutant emission as target in the decision domain optimizing, optimizing algorithm can adopt non-dominated Sorting multi-objective genetic algorithm with elitism strategy, simulated annealing etc.After the optimum coal mixture scheme scheme is determined, determine according to boiler characteristics which coal bunker is upper coal scheme be about to enter on any coal, and send upper coal scheme to the feeding decision-making module.
The feeding decision-making module is received in coal piling position, coal and the coal piling total amount thereof of drum coal unit, and the upper coal scheme of intelligent coal blending and upper coal computing module; Determine the feeding approach according to above-mentioned information, the feeding approach can the reclaimer total kilometres the shortest or nearby feeding be that criterion is determined.To carry at last the feeding instruction of feeding approach and pass to stacker-reclaimer unit and defeated coal unit, finish coal blending and upper coal by stacker-reclaimer and defeated coal unit.The decision-making of upper coal and feeding decision-making module also receive the feeding position of reality of stacker-reclaimer unit feedback and feeding amount with the coal information of depositing of real time modifying coal yard, thereby real-time and the integrality of coal information are deposited in assurance.
As optimization, native system can also comprise: module is optimized in operation, according to the real-time status of boiler, be optimized take boiler safety, high-level efficiency, low emission as the coal-supplying amount operational factor of target to each feeder, and it is for reference that Optimal Decision-making is presented to the operations staff of power plant; Intelligence is purchased the coal recommending module, when the coal-fired storage in the coal yard was lower than safety value, system server started intelligence and purchases the coal recommending module, the storage of automatic analysis coal yard fire coal and ature of coal situation, and according to the price situation of current coal market, analysis-by-synthesis provides the optimum coal of buying.
Native system is implemented and that fire coal is carried out the intelligent scheduling process is as follows in thermal power plant:
1) when new collier or train are arranged to the port, operate in the data-interface program of drum coal instrument on the dish coal controller, coal yard is coiled coal, and will coil the coal result data and pass to system server, system server starts intelligent windrow computing module after receiving dish coal result;
2) intelligent windrow computing module determines that according to taking coal piling position and coal piling total amount thereof current coal piling operates optional idle coal piling position; According to carrying out the windrow decision-making when the coal coal of coming, optional coal piling position and windrow rule, choose the best coal piling position of coal, and the windrow instruction that will comprise best coal piling positional information sends the stacker-reclaimer unit to, the coal piling operation is finished in the stacker-reclaimer unit;
3) on the needs during coal, system server starts intelligent coal blending and upper coal computing module, calculate Coal Blending Schemes and the upper coal scheme of boiler the best according to the real-time status of boiler unit, upper coal scheme is passed to upper coal decision-making and feeding decision-making module, choose best upper coal decision-making and feeding decision-making according to the principle of optimality of user preset;
4) upper coal decision-making and feeding decision-making module are received in the dish coal result of drum coal unit and the upper coal scheme of intelligent coal blending and upper coal calculating mould, determine the feeding approach, to carry at last the feeding instruction of feeding approach and pass to stacker-reclaimer unit and defeated coal unit, finish coal blending and upper coal by stacker-reclaimer and defeated coal unit;
5) if also comprising intelligence, system purchases the coal recommending module, can also carry out following step so: when the coal-fired storage in the coal yard is lower than safety value, system server starts intelligence and purchases the coal recommending module, the storage of automatic analysis coal yard fire coal and ature of coal situation, and according to the price situation of current coal market, analysis-by-synthesis provides the optimum coal of buying.
Claims (6)
1. an Intelligent fire coal scheduling system for thermal power plant is included in drum coal unit, stacker-reclaimer unit, defeated coal unit, coal bunker unit and system server;
Described drum coal instrument and the dish coal controller of being included in drum coal unit, described dish coal controller receives the dish coal instruction of described system server, under described dish coal instruction effect, be controlled at the work of described drum coal instrument, and calculate the coal piling total amount according to described coal piling position, coal and coal piling shape in drum coal instrument feedback, described coal piling position, coal and coal piling total amount are passed to described system server;
Described stacker-reclaimer unit comprises stacker-reclaimer and stacker-reclaimer controller, described stacker-reclaimer controller receives the windrow instruction of described system server, described windrow instruction carries best coal piling positional information, the described stacker-reclaimer of control is finished new optimum position stacking to coal under described windrow instruction effect, and the coal piling positional information of reality is fed back to described system server; Described stacker-reclaimer controller also receives the feeding instruction of described system server, described feeding instruction carries feeding approach information, under described feeding instruction effect, cooperate with described defeated coal unit and finish the feeding operation, and feeding position and the feeding amount of reality fed back to described system server;
Described defeated coal unit comprises coal conveyer belt, coal plough, coal plough state sensor and coal conveying device, described coal conveyer belt is connected between the travelling belt and coal bunker of described stacker-reclaimer unit, and described coal plough is installed between described coal conveyer belt end and the coal bunker; Described stacker-reclaimer unit receives the feeding instruction of described system server, coal is sent arrived the coal conveyer belt end, and coal plough turns to the working position under the defeated coal instruction control of system server, finish to the coal bunker coal;
Described coal bunker unit comprises a plurality of coal bunkers, feeder and coal level meter, and a feeder is laid in the below of each coal bunker, and a coal level meter is installed in the top of each coal bunker; Described feeder is used for to the boiler coal supply, and described coal level meter is surveyed the coal position height in the coal bunker, if the coal position highly reaches alarming value, then sends warning message to coal plough and stops coal;
Described system server comprises intelligent windrow computing module, intelligent coal blending and upper coal computing module, the decision-making of upper coal and feeding decision-making module;
Described intelligent windrow computing module is used in the instruction of drum coal unit transmission dish coal, is received in coal piling position, coal and the coal piling total amount of drum coal unit, determines that according to coal piling position and coal piling total amount thereof current coal piling operates optional idle coal piling position; According to carrying out the best coal piling position that windrow makes a strategic decision to choose coal when come coal coal, optional idle coal piling position and predetermined windrow rule, and the windrow instruction that will comprise best coal piling positional information sends the stacker-reclaimer unit to;
Described intelligent coal blending and upper coal computing module, be used for being received in the coal of drum coal unit and the real-time status of boiler unit, real-time status according to coal and boiler unit is determined Coal Blending Schemes, and then according to boiler characteristics and the definite upper coal scheme of Coal Blending Schemes, send upper coal scheme to the feeding decision-making module;
Described feeding decision-making module, be used for receiving described coal piling position in drum coal unit, coal and coal piling total amount, and the upper coal scheme of described intelligent coal blending and upper coal computing module, determine the feeding approach according to described coal piling position, coal, coal piling total amount and upper coal scheme, and stacker-reclaimer unit and defeated coal unit are passed in the feeding instruction that will carry feeding approach information; The decision-making of upper coal and feeding decision-making module also are used for receiving the actual feeding position of described stacker-reclaimer unit feedback and feeding amount with the coal information of depositing of real time modifying coal yard, thereby real-time and the integrality of coal information are deposited in assurance.
2. Intelligent fire coal scheduling system for thermal power plant according to claim 1 is characterized in that, described windrow rule comprises the close rule of ature of coal, evenly stacks rule and taboo heap rule, and the close rule of described ature of coal is the close stacking of the close coal of ature of coal; The coal piling amount that described even stacking rule is different coal yards is as far as possible identical; Described taboo heap rule is forbidden coal piling for certain interval of coal yard or coal yard.
3. Intelligent fire coal scheduling system for thermal power plant according to claim 1, it is characterized in that, the specific implementation of described intelligent coal blending and upper coal computing module is: according to the current real time execution parameter of depositing coal coal and boiler of all coal yards, analyze the coupled characteristic between coal and the boiler, take boiler to the adaptability of ature of coal as boundary condition, calculate satisfactory Coal Blending Schemes, Coal Blending Schemes comprises mixed coal and adds the storehouse ratio, adds the quantity that the storehouse ratio refers to coal bunker that coal adds; Then select the optimum coal mixture scheme scheme take boiler safety, burning highly effective rate and low pollutant emission as the target optimizing; After the optimum coal mixture scheme scheme is determined, determine according to boiler characteristics which coal bunker is upper coal scheme be about to enter on any coal.
4. Intelligent fire coal scheduling system for thermal power plant according to claim 1 is characterized in that, the feeding approach in described upper coal decision-making and the feeding decision-making module take the stacker-reclaimer total kilometres the shortest or nearby feeding as criterion definite.
5. Intelligent fire coal scheduling system for thermal power plant according to claim 1, it is characterized in that, described system comprises that also operation optimizes module, is used for the real-time status according to boiler, is optimized take boiler safety, high-level efficiency, low emission as the coal-supplying amount of target to each feeder.
6. Intelligent fire coal scheduling system for thermal power plant according to claim 1, it is characterized in that described system comprises that also intelligence purchases the coal recommending module, be used for analyzing the coal-fired storage of coal yard and distribution of coal sorts, and according to the price situation of current coal market, analysis-by-synthesis provides the optimum coal of buying.
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