CN113793073A - Method for calculating real-time waste incineration amount of large-scale waste incineration power plant - Google Patents
Method for calculating real-time waste incineration amount of large-scale waste incineration power plant Download PDFInfo
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Abstract
The invention discloses a method for calculating the real-time garbage burning quantity of a large-scale garbage burning power plant, which comprises the steps of collecting basic design data, determining real-time parameters, obtaining data from a real-time database, starting the current time t as a reference, starting the current round of real-time calculation, judging whether an incinerator and a waste heat boiler are in steady-state operation or not, judging whether a steam turbine is in steady-state operation or not, comprehensively judging whether three five furnaces are in steady-state operation or not, filtering the real-time data of the calculated parameters, calculating the real-time garbage burning quantity of the whole plant by using effective data after filtering, performing data verification on the real-time garbage burning quantity of the whole plant by using the accumulated burning quantity of verification parameters, performing real-time garbage burning quantity of each incinerator under the steady-state operation condition by using the real-time garbage burning quantity of the whole plant qualified through verification, finally writing the calculation result into the real-time database and finishing the round of calculation, and entering the next round of real-time calculation.
Description
Technical Field
The invention belongs to the technical field of the power industry, and particularly relates to a method for calculating the real-time waste incineration amount of a large-scale waste incineration power plant.
Background
The large-scale waste incineration power plant adopts the technology of 'mechanical grate type waste incinerator, waste heat boiler and steam turbine generator unit', a waste grab bucket weighing and metering device is generally introduced into a DCS control system, the working amount of the waste incineration accumulated on duty and the working amount of the waste incineration accumulated on long time are regularly calculated based on device signal feedback, but the waste real-time incineration amount similar to the real-time coal feeding amount of a thermal power unit is lacked, and players of the waste real-time incineration amount in a real-time monitoring and analyzing system play a very important role, so that the waste real-time incineration amount of the large-scale waste incineration power plant is necessarily calculated on line.
At present, for the amount of waste incineration, a waste incineration meter weighing system designed by converting irregular signal values such as torque and rotating speed of a hoisting frequency converter into weight data through an algorithm is reported in documents, such as "waste incineration power plant waste incineration meter weighing system, modern industrial economy and informatization, 2019 (09)", and a grab bucket crane weighing system special for a waste incineration power plant based on a column type pressure sensor and a data wireless transmission technology is also reported in documents, such as "waste grab bucket bridge crane weighing system, chinese machinery, 2014 (10)". However, no report is found on an online calculation method for the real-time waste incineration amount of a large waste incineration power plant.
By calculating the real-time waste incineration amount of the large-scale waste incineration power plant and calculating other energy consumption indexes in real time based on the real-time waste incineration amount, the system can help regional companies or group technicians to realize transverse comparison of indexes among projects of the same type, and is more beneficial to the construction of systems such as a real-time supervision system and an economic index on-line analysis system.
Disclosure of Invention
In order to overcome the technical problems, the invention provides a method for calculating the real-time waste incineration amount of a large-scale waste incineration power plant, which is based on the method, realizes real-time calculation through on-line programming and stores data in real time, not only can provide on-line monitoring of the operation condition of a waste incinerator for enterprise technicians, but also is convenient for the enterprise managers to calculate other energy consumption indexes in real time based on the real-time waste incineration amount and carry out comparative analysis of the indexes.
In order to achieve the purpose, the invention adopts the technical scheme that:
the method for calculating the real-time waste incineration amount of the large-scale waste incineration power plant comprises the following steps;
1) collecting base design data
Collecting basic design data for a large-scale waste incineration power plant;
2) determining relevant real-time parameters
All real-time parameters acquire data from a real-time database, are classified according to an incinerator, an exhaust-heat boiler and a turbonator, and are classified according to condition parameters, calculation parameters and verification parameters, wherein the condition parameters are used for judging whether the incinerator, the exhaust-heat boiler or the turbonator is in steady-state operation, the calculation parameters are used for calculating the real-time garbage incineration amount, and the verification parameters are used for verifying the calculated real-time garbage incineration amount;
3) start the current round of real-time calculation
Starting the current round of real-time calculation by taking the current time t as reference time;
4) judging whether the incinerator and the waste heat boiler operate in a stable state or not
Acquiring historical data of the condition parameters of the incinerator, the waste heat boiler and the steam turbine generator in the step 2) in delta t time (wherein delta t is defined as a time period of t-300 s-t-1 s), defining 5 boundary conditions of the incinerator and the waste heat boiler, and if at least one boundary condition is completely met, considering that the incinerator and the waste heat boiler are in a steady-state operation condition, and continuing to calculate in the next step; otherwise, the 5 incinerators and the waste heat boiler are all considered to be in the unsteady state operation condition, the calculation of the current t moment is skipped, and the calculation is carried out at the next t +1s moment (namely, the next round is carried out);
5) judging whether the turbonator operates in a steady state or not
Acquiring historical data of the condition parameters of the turbonator in the step 2) in delta t time from a real-time database (wherein delta t is defined as a time period of t-300 s-t-1 s), defining 3 turbonator boundary conditions, and if at least one boundary condition is completely met, determining that the turbonator is in a steady-state operation condition, and continuing to calculate in the next step; otherwise, considering that all the 3 turbonators are in the unsteady state operation condition, skipping the calculation at the current time t, and entering the calculation at the next time t +1s (namely entering the next round);
6) judging whether the five furnaces and the three machines run stably
If the incinerator and the waste heat boiler are judged to be in steady-state operation according to the step 4), and the turbonator is judged to be in steady-state operation according to the step 5), the five furnaces and the three furnaces are considered to be in steady-state operation conditions, and then the next step of calculation can be continued; otherwise, the five furnaces and the three machines are considered to be in an unsteady state operation condition, the calculation of the current t moment is skipped, and the calculation is carried out at the next t +1s moment (namely, the next round is carried out);
7) data filtering process
If the five furnaces and the three machines are judged to be in the steady-state operation condition according to the step 6), acquiring real-time data X (t) of the calculation parameters in the step 2) at the current t moment from a real-time database, and cleaning the data according to a method of the formula (1):
in the formula (1), XiFor calculating arbitrary data of the parameter in the time period of delta t, m is the parameter in the time period of delta tThe statistical number of data within a segment;
if the real-time data X (t) meets the formula (1), the real-time data X (t) is regarded as effective data, and the next calculation is continued; otherwise, the data is considered as invalid data, the data does not participate in the real-time calculation of the current round, and the next round of calculation is started;
8) calculating real-time incineration quantity of garbage of whole plant
If the five furnaces and the three turbines are in the steady-state operation condition according to the step 6), and the real-time data of the active power of at least one of the three turbonators at the current t moment is determined to be effective data according to the step 5), calculating the real-time incineration quantity Q of the whole plant garbage at the current t moment according to the formula (2)Plant(t) and continuing the current round of real-time calculation:
in the formula (2), k denotes an incinerator No. 1-5 and a waste heat boiler, and j denotes a turbonator No. 1-3;
9) checking real-time incineration quantity of garbage of whole plant
According to the step 6), judging whether the five-furnace three-machine is in a steady-state operation condition, acquiring two historical data of the 5 verification parameters of the incinerator and the waste heat boiler determined in the step 2) and the verification parameter accumulated incineration amount before the current time t from a real-time database, and calculating the basic verification data Total of the real-time incineration amount of the garbage in the whole plant according to the formula (3)Check(t)：
In the formula (3), t-2、t-1Respectively representing historical moments corresponding to two pieces of historical data with non-repeated numerical values before the current t moment;
then, determining a data verification interval of the real-time incineration quantity of the garbage in the whole plant as follows: [ -50% TotalCheck(t)，+50％TotalCheck(t)]Using the check interval to burn the whole plant garbage at the current time t calculated in the step 6) in real timeBurning rate QPlant(t) carrying out data verification, and if the verification is qualified, continuing the real-time calculation of the current round; if the verification is not qualified, the result is not output, the calculation of the current round is terminated, and the next round of calculation is carried out;
10) calculating the real-time incineration quantity of the garbage in each incinerator
In the boundary conditions of the 5 incinerators and the waste heat boiler in the step 4), if the boundary conditions of the k-th incinerator and the waste heat boiler are met, judging that the k-th incinerator and the waste heat boiler are in a steady-state operation condition, and determining the main steam flow MS of the k-th waste heat boiler at the current t moment according to the step 5)IkWhen the data is valid data, calculating the real-time incineration quantity Q of the k incinerator garbage according to the formula (4)Ik(t)：
In the formula (4), k denotes an incinerator No. 1-5 and a waste heat boiler, and j denotes a turbonator No. 1-3;
11) writing the data into the real-time database and finishing the real-time calculation of the current round
And finally, writing the verified real-time incineration amount of the garbage of the whole plant and the real-time incineration amount of the garbage of each incinerator under the steady-state operation condition calculated in the step 10) into a real-time database, finishing the real-time calculation of the current round, and entering the next round of calculation (at the moment of t +1 s).
The design data collected in step 1) are shown in the following table:
the real-time parameters of the 5 incinerators and the waste heat boiler in the step 2) are shown in the following table:
the real-time parameters of the 3 turbonators in the step 2) are shown in the following table:
the boundary conditions of the incinerator and the waste heat boiler in the step 4) in steady-state operation are defined as shown in the following table:
and acquiring historical data of the condition parameters of the incinerator and the waste heat boiler in the step 2) in delta t time from a real-time database (wherein delta t is defined as a time period t-300 s-t-1 s).
The definition of the boundary condition of the step 5) when the turbonator is in steady-state operation is shown in the following table:
and acquiring historical data of the condition parameters of the turbonator in the step 2) in the time delta t from a real-time database (wherein delta t is defined as a time period t-300 s-t-1 s).
The invention has the beneficial effects that:
the invention provides an online method for calculating the real-time garbage incineration amount of a large garbage incineration power generation project, can accurately calculate the real-time garbage incineration amount of each incinerator, and has guiding significance for online comparison and analysis of energy consumption indexes of the garbage incineration power generation project.
Drawings
FIG. 1 is a schematic diagram of the real-time computing process of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples.
1) Collecting base design data
For large-scale waste incineration power plants, basic design data were collected and summarized as shown in the following table:
2) determining relevant real-time parameters
All real-time parameters acquire data from a real-time database, are classified according to an incinerator, a waste heat boiler and a turbonator, and are classified into the following types: the system comprises condition parameters, calculation parameters and verification parameters, wherein the condition parameters are used for judging whether the incinerator, the waste heat boiler or the steam turbine generator is in steady-state operation or not, the calculation parameters are used for calculating the real-time waste incineration amount, and the verification parameters are used for verifying the calculated real-time waste incineration amount.
The real-time parameters of the 5 incinerators and the waste heat boiler are shown in the following table.
The real-time parameters of the 3 turbonators are shown in the following table.
3) Start the current round of real-time calculation
And starting the current round of real-time calculation by taking the current time t as reference time.
4) Judging whether the incinerator and the waste heat boiler operate in a stable state or not
Acquiring historical data of the condition parameters of the incinerator and the waste heat boiler in the step 2) in delta t time from a real-time database (wherein delta t is defined as a time period t-300 s-t-1 s), and defining boundary conditions according to the following table.
If at least one boundary condition content in the boundary conditions of the 5 incinerators and the waste heat boiler is completely met, the incinerators and the waste heat boiler are considered to be in a steady-state operation condition, and the calculation of the next step can be continued; otherwise, the 5 incinerators and the waste heat boiler are all considered to be in the unsteady state operation condition, the calculation of the current time t is skipped, and the calculation is carried out at the next time t +1s (namely, the next round is carried out).
5) Judging whether the turbonator operates in a steady state or not
Acquiring historical data of the condition parameters of the turbonator in the step 2) in delta t time from a real-time database (wherein delta t is defined as a time period from t-300s to t-1s), and defining boundary conditions according to the following table.
If at least one boundary condition content in the boundary conditions of the 3 turbonators is completely met, the turbonator is considered to be in a steady-state operation condition, and then the calculation of the next step can be continued; otherwise, all the 3 turbonators are considered to be in the unsteady state operation condition, the calculation of the current t moment is skipped, and the calculation is carried out at the next t +1s moment (namely, the next round is carried out).
6) Judging whether the five furnaces and the three machines run stably
If the incinerator and the waste heat boiler are judged to be in steady-state operation according to the step 4), and the turbonator is judged to be in steady-state operation according to the step 5), the five furnaces and the three furnaces are considered to be in steady-state operation conditions, and then the next step of calculation can be continued; otherwise, the five furnaces and the three machines are considered to be in an unsteady state operation condition, the calculation of the current time t is skipped, and the calculation is carried out at the next time t +1s (namely, the next round is carried out).
7) Data filtering process
If the five furnaces and the three machines are judged to be in the steady-state operation condition according to the step 6), acquiring real-time data X (t) of the calculation parameters in the step 2) at the current t moment from a real-time database, and cleaning the data according to a method of the formula (1):
in the formula (1), XiTo calculate any data for the parameter over the Δ t period, m is the statistical number of data for the parameter over the Δ t period.
If the real-time data X (t) meets the formula (1), the real-time data X (t) is regarded as effective data, and the next calculation is continued; otherwise, the data is considered as invalid data, and the data does not participate in the real-time calculation of the current round and enters the next round of calculation.
8) Calculating real-time incineration quantity of garbage of whole plant
If the five-furnace three-machine is in the steady-state operation condition according to the step 6), and when the real-time data of the main steam flow of at least one of the five incinerators and the waste heat boilers at the current t moment is determined to be effective data according to the step 5), calculating the real-time garbage incineration quantity Q of the whole plant at the current t moment according to the formula (2)Plant(t) and continuing the current round of real-time calculation:
in the formula (2), j denotes the incinerator No. 1-5 and the waste heat boiler.
9) Checking real-time incineration quantity of garbage of whole plant
According to the step 6), judging whether the five-furnace three-machine is in a steady-state operation condition, acquiring two historical data of the 5 verification parameters of the incinerator and the waste heat boiler determined in the step 2) and the verification parameter accumulated incineration amount before the current time t from a real-time database, and calculating the basic verification data Total of the real-time incineration amount of the garbage in the whole plant according to the formula (3)Check(t)：
In the formula (3), t-2、t-1Respectively representing the historical time corresponding to two historical data with non-repeated numerical values before the current time t.
Then, determining a data verification interval of the real-time incineration quantity of the garbage in the whole plant as follows: [ -50% TotalCheck(t)，+50％TotalCheck(t)]Using the check interval to calculate the real-time incineration quantity Q of the whole plant garbage at the current time t calculated in the step 6)Plant(t) carrying out data verification, and if the verification is qualified, continuing the real-time calculation of the current round; if the verification is not qualified, the result is not output, the calculation of the current round is terminated, and the next round of calculation is carried out;
10) calculating the real-time incineration quantity of the garbage in each incinerator
In the boundary conditions of the 5 incinerators and the waste heat boiler in the step 4), if the boundary conditions of the k-th incinerator and the waste heat boiler are met, judging that the k-th incinerator and the waste heat boiler are in a steady-state operation condition, and determining the main steam flow MS of the k-th waste heat boiler at the current t moment according to the step 5)IkWhen the data is valid data, calculating the real-time incineration quantity Q of the k incinerator garbage according to the formula (4)Ik(t)：
In the formula (4), k denotes the incinerator and exhaust-heat boiler No. 1-5, and j denotes the turbonator No. 1-3.
And finally, calculating the real-time incineration amount of the garbage of each incinerator under the steady-state operation condition.
11) Writing the data into the real-time database and finishing the real-time calculation of the current round
And finally, writing the verified real-time incineration amount of the garbage of the whole plant and the real-time incineration amount of the garbage of each incinerator under the steady-state operation condition calculated in the step 10) into a real-time database, finishing the real-time calculation of the current round, and entering the next round of calculation (at the moment of t +1 s).
Claims (6)
1. The method for calculating the real-time waste incineration amount of the large-scale waste incineration power plant is characterized by comprising the following steps of;
1) collecting base design data
Collecting design data for a large-scale waste incineration power plant;
2) determining relevant real-time parameters
All real-time parameters acquire data from a real-time database, are classified according to an incinerator, an exhaust-heat boiler and a turbonator, and are classified according to condition parameters, calculation parameters and verification parameters, wherein the condition parameters are used for judging whether the incinerator, the exhaust-heat boiler or the turbonator is in steady-state operation, the calculation parameters are used for calculating the real-time garbage incineration amount, and the verification parameters are used for verifying the calculated real-time garbage incineration amount;
3) start the current round of real-time calculation
Starting the current round of real-time calculation by taking the current time t as reference time;
4) judging whether the incinerator and the waste heat boiler operate in a stable state or not
Acquiring historical data of the condition parameters of the incinerator, the waste heat boiler and the steam turbine generator in the step 2) in delta t time (wherein delta t is defined as a time period of t-300 s-t-1 s), defining 5 boundary conditions of the incinerator and the waste heat boiler, and if at least one boundary condition is completely met, considering that the incinerator and the waste heat boiler are in a steady-state operation condition, and continuing to calculate in the next step; otherwise, the 5 incinerators and the waste heat boiler are all considered to be in the unsteady state operation condition, the calculation of the current t moment is skipped, and the calculation is carried out at the next t +1s moment (namely, the next round is carried out);
5) judging whether the turbonator operates in a steady state or not
Acquiring historical data of the condition parameters of the turbonator in the step 2) in delta t time from a real-time database (wherein delta t is defined as a time period of t-300 s-t-1 s), defining 3 turbonator boundary conditions, and if at least one boundary condition is completely met, determining that the turbonator is in a steady-state operation condition, and continuing to calculate in the next step; otherwise, considering that all the 3 turbonators are in the unsteady state operation condition, skipping the calculation at the current time t, and entering the calculation at the next time t +1s (namely entering the next round);
6) judging whether the five furnaces and the three machines run stably
If the incinerator and the waste heat boiler are judged to be in steady-state operation according to the step 4), and the turbonator is judged to be in steady-state operation according to the step 5), the five furnaces and the three furnaces are considered to be in steady-state operation conditions, and then the next step of calculation can be continued; otherwise, the five furnaces and the three machines are considered to be in an unsteady state operation condition, the calculation of the current t moment is skipped, and the calculation is carried out at the next t +1s moment (namely, the next round is carried out);
7) data filtering process
If the five furnaces and the three machines are judged to be in the steady-state operation condition according to the step 6), acquiring real-time data X (t) of the calculation parameters in the step 2) at the current t moment from a real-time database, and cleaning the data according to a method of the formula (1):
in the formula (1), XiIn order to calculate any data of the parameter in the delta t time period, m is the statistical quantity of the data of the parameter in the delta t time period;
if the real-time data X (t) meets the formula (1), the real-time data X (t) is regarded as effective data, and the next calculation is continued; otherwise, the data is considered as invalid data, the data does not participate in the real-time calculation of the current round, and the next round of calculation is started;
8) calculating real-time incineration quantity of garbage of whole plant
If the five furnaces and the three turbines are in the steady-state operation condition according to the step 6), and the real-time data of the active power of at least one of the three turbonators at the current t moment is determined to be effective data according to the step 5), calculating the real-time incineration quantity Q of the whole plant garbage at the current t moment according to the formula (2)Plant(t) and continuing the current round of real-time calculation:
in the formula (2), k denotes an incinerator No. 1-5 and a waste heat boiler, and j denotes a turbonator No. 1-3;
9) checking real-time incineration quantity of garbage of whole plant
According to the step 6), judging whether the five-furnace three-machine is in a steady-state operation condition, acquiring two historical data of the 5 verification parameters of the incinerator and the waste heat boiler determined in the step 2) and the verification parameter accumulated incineration amount before the current time t from a real-time database, and calculating the basic verification data Total of the real-time incineration amount of the garbage in the whole plant according to the formula (3)Check(t)：
In the formula (3), t-2、t-1Respectively representing historical moments corresponding to two pieces of historical data with non-repeated numerical values before the current t moment;
then, determining a data verification interval of the real-time incineration quantity of the garbage in the whole plant as follows: [ -50% TotalCheck(t)，+50％TotalCheck(t)]Using the check interval to calculate the real-time incineration quantity Q of the whole plant garbage at the current time t calculated in the step 6)Plant(t) carrying out data verification, and if the verification is qualified, continuing the real-time calculation of the current round; if it is verifiedIf not, not outputting the result, terminating the calculation of the current round, and entering the next round of calculation;
10) calculating the real-time incineration quantity of the garbage in each incinerator
In the boundary conditions of the 5 incinerators and the waste heat boiler in the step 4), if the boundary conditions of the k-th incinerator and the waste heat boiler are met, judging that the k-th incinerator and the waste heat boiler are in a steady-state operation condition, and determining the main steam flow MS of the k-th waste heat boiler at the current t moment according to the step 5)IkWhen the data is valid data, calculating the real-time incineration quantity Q of the k incinerator garbage according to the formula (4)Ik(t)：
In the formula (4), k denotes an incinerator No. 1-5 and a waste heat boiler, and j denotes a turbonator No. 1-3;
11) writing the data into the real-time database and finishing the real-time calculation of the current round
And finally, writing the verified real-time incineration amount of the garbage of the whole plant and the real-time incineration amount of the garbage of each incinerator under the steady-state operation condition calculated in the step 10) into a real-time database, finishing the real-time calculation of the current round, and entering the next round of calculation (at the moment of t +1 s).
2. The method for calculating the real-time waste incineration amount of the large-scale waste incineration power plant according to the claim 1, characterized by comprising the following steps; the design data collected in step 1) are shown in the following table:
3. the method for calculating the real-time waste incineration amount of a large-scale waste incineration power plant according to claim 1, wherein the real-time parameters of the 5 incinerators and the waste heat boiler in the step 2) are shown in the following table:
4. the method for calculating the real-time waste incineration amount of the large-scale waste incineration power plant according to the claim 1, wherein the real-time parameters of the 3 steam turbine generators in the step 2) are shown in the following table:
5. the method for calculating the real-time garbage incineration amount of a large-scale garbage incineration power plant according to claim 1, wherein the boundary conditions of the incinerator + waste heat boiler in the step 4) in steady-state operation are defined as shown in the following table:
and acquiring historical data of the condition parameters of the incinerator and the waste heat boiler in the step 2) in delta t time from a real-time database (wherein delta t is defined as a time period t-300 s-t-1 s).
6. The method for calculating the real-time waste incineration amount of the large-scale waste incineration power plant according to the claim 1, wherein the boundary conditions of the step 5) that the steam turbine generator is in steady-state operation are defined as shown in the following table:
and acquiring historical data of the condition parameters of the turbonator in the step 2) in the time delta t from a real-time database (wherein delta t is defined as a time period t-300 s-t-1 s).
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