CN113946789A - Method for calculating waste incineration amount of four-furnace three-machine waste incineration power plant in real time - Google Patents
Method for calculating waste incineration amount of four-furnace three-machine waste incineration power plant in real time Download PDFInfo
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Abstract
The invention discloses a method for calculating the garbage incineration amount of a four-furnace three-machine garbage incineration power plant in real time, which starts the current round of real-time calculation by taking the current time t as a reference, collects design data and historical data, determines operation condition parameters, real-time calculation parameters and verification calculation parameters, acquires the data from a real-time database, sequentially judges whether an incinerator, a waste heat boiler and a steam turbine generator are in steady-state operation or not, then comprehensively judges whether the four-furnace three-machine is in steady-state operation or not, performs data filtering treatment on the real-time data of the calculation parameters, calculates the real-time garbage incineration amount of a whole plant by using effective data after filtering treatment, performs data verification on the real-time garbage incineration amount of the whole plant by using the verification calculation parameters, calculates the real-time garbage incineration amount of each incinerator under the steady-state operation condition by using the real-time garbage incineration amount of the whole plant which is qualified through verification, finally writes the calculation result into the real-time database and finishes the current 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 waste incineration amount of a four-furnace three-machine waste incineration power plant in real time.
Background
The main fuel of the four-furnace three-machine large-scale waste incineration power plant is domestic waste, the garbage in the bin is lifted to the feeding hopper through the garbage grab bucket, and the garbage is continuously fed into the grate inlet through the feeding groove and finally enters the incinerator for combustion. The incineration waste is measured and weighed by a waste grab bucket weighing and metering device before entering the furnace, the existing measurement and weighing is the accumulative waste incineration amount, but an online calculation method of the real-time waste incineration amount is not reported.
The real-time waste incineration amount can assist in calculating other energy consumption indexes, and can help energy-saving professional technicians of enterprises to know the actual operation condition of the incinerator to perform transverse comparison, so that the real-time calculation of the waste incineration amount of the four-furnace three-machine large-scale waste incineration power plant is very important. The four-furnace three-machine garbage incinerator adopts a unique arrangement mode of 'four mechanical grate furnace type garbage incinerators + four waste heat boilers + three steam turbine generator units', garbage burns in the four incinerators and transfers heat to main steam of the four waste heat boilers and then collects the main steam to a main steam pipe to supply the three steam turbine generator units to generate electricity, and therefore the real-time garbage incineration amount is calculated by analyzing the historical relationship between the generated energy of the three steam turbine generator units and the garbage incineration amount of the four incinerators, and the real-time garbage incineration amount is relatively accurate.
Disclosure of Invention
In order to overcome the technical problems, the invention provides a method for calculating the garbage incineration amount of a four-furnace three-machine garbage incineration power plant in real time, which is convenient for technicians to know the real-time garbage incineration treatment conditions of three incinerators in real time.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for calculating the garbage incineration amount of a four-furnace three-machine garbage incineration power plant in real time comprises the following steps;
1) start the current round of real-time calculation
Defining the current time t as reference time, and starting the current round of real-time calculation;
2) collecting design data and historical data
Collecting design data and historical data aiming at a four-furnace three-machine waste incineration power plant;
3) determining operating condition parameters, real-time calculation parameters and verification calculation parameters
Dividing the real-time parameters into three types, namely operating condition parameters, real-time calculation parameters and checking calculation parameters, wherein the operating condition parameters are used for judging whether the incinerator, the waste heat boiler and the steam turbine generator are in steady operation or not, the real-time calculation parameters are used for calculating the real-time waste incineration amount, the checking calculation parameters are used for checking the calculated real-time waste incineration amount, and the real-time data of all the real-time parameters are obtained from a real-time database;
4) judging whether the incinerator is in steady operation
Obtaining the operating condition parameters of the incinerator in the step 2) from a real-time database at tHistoryHistorical data over time (where tHistoryDefined as time period t-6min to t-1s) and defines three incinerator boundary conditions:
incinerator boundary conditions one: incinerator operating state SFMAll of the historical data of (1);
incinerator boundary conditions two: primary air flow F of grateFMThe historical data of (2) is all larger than 5000Nm3/h, and the data fluctuation range does not exceed +/-50% of the arithmetic mean value of the historical data;
incinerator boundary conditions three: incinerator furnace temperature TIMThe historical data is all more than 750 ℃, and the data fluctuation range does not exceed +/-20% of the arithmetic mean value of the historical data;
when the three boundary conditions of the No. M incinerator are simultaneously met, the incinerator is determined to be in steady-state operation, if at least one incinerator is in steady-state operation, the whole incinerator is determined to be in steady-state operation, and the next step of calculation can be continued; otherwise, the whole incinerator is considered to be in unstable state operation, the calculation at the current time t is skipped, and the next round of calculation is carried out;
5) judging whether the exhaust-heat boiler operates in a steady state or not
Obtaining the operating condition parameters of the waste heat boiler in the step 2) from a real-time database at tHistoryHistorical data over time (where tHistoryDefined as a time period from t-6min to t-1s), and defining three boundary conditions of the waste heat boiler:
boundary conditions of the waste heat boiler are as follows: intermediate layer temperature T of first vertical flue of waste heat boilerBMThe historical data is all more than 700 ℃, and the data fluctuation range does not exceed +/-50% of the arithmetic mean value of the historical data;
and (2) boundary conditions of the waste heat boiler are as follows: opening VO of main steam electric gate valve of waste heat boilerB MThe historical data is all larger than 5%, and the data fluctuation range does not exceed +/-20% of the arithmetic mean value of the historical data;
boundary conditions of the waste heat boiler are as follows: economizer inlet feed water pressure PBMThe historical data of (2) is all larger than 3.0MPa, and the data fluctuation range does not exceed +/-50% of the arithmetic mean value of the historical data;
when the three boundary conditions of the waste heat boiler No. M are simultaneously met and the corresponding incinerator is in steady-state operation according to the step 4), the waste heat boiler No. M is considered to be in steady-state operation, if at least one waste heat boiler and the corresponding incinerator are in steady-state operation, the whole waste heat boiler is considered to be in steady-state operation, and the next step of calculation can be continued; otherwise, the whole waste heat boiler is considered to be in unstable state operation, the calculation at the current time t is skipped, and the next round of calculation is carried out;
6) judging whether the turbonator operates in a steady state or not
Obtaining the operating condition parameters of the turbonator in the step 2) from a real-time database at tHistoryHistorical data over time (where,tHistorydefined as the time period from t-6min to t-1s), and defining the boundary conditions of three turbonators:
boundary conditions of the turbonator are as follows: steam turbine operating state STNAll of the historical data of (1);
and boundary conditions of the steam turbine generator are as follows: front temperature T of main valveTNThe historical data is all more than 350 ℃, and the data fluctuation range does not exceed +/-20% of the arithmetic mean value of the historical data;
and boundary conditions of the turbonator are as follows: main valve front pressure PTNThe historical data of (2) is all larger than 3.0MPa, and the data fluctuation range does not exceed +/-50% of the arithmetic mean value of the historical data;
when the three boundary conditions of the No. N steam turbine generator are simultaneously met, the No. N steam turbine generator is considered to be in steady-state operation, if at least one steam turbine generator is in steady-state operation, the whole steam turbine generator is considered to be in steady-state operation, and then the next step of calculation can be continued; otherwise, the turbonator is considered to be in unsteady state operation, the calculation at the current time t is skipped, and the next round of calculation is carried out;
7) comprehensively judging whether four furnaces and three machines are in steady-state operation
If the incinerator, the waste heat boiler and the steam turbine generator are judged to be in steady-state operation according to the steps 4), 5) and 6), the four furnaces and the three turbines are considered to be in steady-state operation, and then the calculation of the next step can be continued; otherwise, the four furnaces and the three machines are considered to be in unsteady state operation, the calculation at the current time t is skipped, and the next round of calculation is carried out;
8) real-time computed parametric data filtering
If the four furnaces and the three machines are judged to be in steady-state operation according to the step 7), acquiring real-time data X (t) of the real-time 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 real-time calculation of parameters at tHistoryArbitrary data in time period, m is parameter at tHistoryStatistical amount of data over a period of time;
if the real-time data X (t) meets the formula (1), the real-time data X (t) is regarded as reliable data, and the next calculation is continued; otherwise, the data is considered as unreliable data, the data does not participate in the real-time calculation of the current round, and the next round of calculation is started;
9) calculating real-time garbage incineration amount of whole plant
If the four furnaces and the three machines are in steady-state operation according to the step 7), and the real-time calculation parameter of the active power of the generator at the current t moment is determined to be reliable data according to the step 8), calculating the whole-plant real-time waste incineration quantity LJ at the current t moment according to the formula (2)Plant(t)：
In the formula (2), M designates an incinerator or a waste heat boiler and takes values of 1, 2, 3 and 4, and N designates a turbonator and takes values of 1, 2 and 3;
10) checking real-time garbage incineration amount of whole plant
According to the step 7), judging that the four furnaces and the three machines are in steady-state operation, acquiring three historical data with the numerical values of the checking calculation parameter accumulated incineration amount of the 4 incinerators determined in the step 2) before the current time t from a real-time database, and calculating real-time garbage incineration amount checking data LJ of the whole plant according to the formula (3)Check1(t)：
In the formula (3), t-3、t-2、t-1Respectively representing historical moments corresponding to three historical data with non-repeated numerical values before the current t moment;
then, calculating real-time garbage incineration amount check data LJ of the whole plant according to the formula (4)Check2(t)：
Then, carrying out data verification on the real-time garbage incineration amount of the whole plant according to the formula (5):
calculating the real-time garbage incineration amount of the whole plant and simultaneously satisfying (5.1) and (5.2) in the formula (5), if the verification is qualified, continuing the real-time calculation of the whole plant; if the calculated real-time garbage incineration amount of the whole plant does not meet the formula (5), checking the garbage to be unqualified, not outputting a result, terminating the calculation of the current round, and entering the next round of calculation;
11) calculating the real-time garbage burning amount of each incinerator
According to the step 4) and the step 5), if the boundary condition of the No. M incinerator and the boundary condition of the No. M waste heat boiler are simultaneously met, judging that the No. M incinerator and the waste heat boiler are in steady-state operation;
determining the main steam flow SF of the waste heat boiler at the M th waste heat boiler at the current t moment according to the step 2)BMWhen the data is reliable, the real-time waste incineration amount LJ of the No. M incinerator is calculated according to the formula (6)FM(t)：
Finally, calculating to obtain the real-time waste incineration amount of each steady-state operation incinerator;
12) writing the data into the real-time database and finishing the real-time calculation of the current round
Finally, writing the verified real-time garbage burning amount of the whole plant and the real-time garbage burning amount of each steady-state operation incinerator calculated in the step 11) into a real-time database, finishing the real-time calculation of the round, and entering the next round of calculation (at the moment of t +1 s);
the collected design data and historical data collected in step 2) are shown in the following table:
the four-furnace three-machine operation condition parameters, the real-time calculation parameters and the verification calculation parameters determined in the step 3) are respectively as follows;
the operating condition parameters, symbols, units and attributions of the four-furnace three-machine are shown in the following table;
the real-time calculation parameters, symbols, units and attributions of the four furnaces and the three machines are shown in the following table;
the checking calculation parameters, symbols, units and attributions of the four furnaces and the three machines are shown in the following table;
| parameter name | Parameter symbol | Unit of parameter | Parameter attribution |
| Operating state of incinerator | SFM | 0/1 | Incinerator |
| Accumulating the garbage disposal amount | LJFM | t | Incinerator |
The invention has the beneficial effects that:
the invention provides an online method for real-time calculation of the waste incineration amount of the four-furnace three-machine household waste incineration power plant, can accurately calculate the real-time waste incineration amount of each incinerator, and has guiding significance for online comparison and analysis of energy consumption indexes.
Drawings
FIG. 1 is a schematic diagram of the real-time computing process of the present invention.
FIG. 2 is a schematic diagram of a real-time waste incineration curve according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples.
1) Start the current round of real-time calculation
Defining the current time t as the reference time, and starting the current round of real-time calculation.
2) Collecting design data and historical data
For a four-furnace three-machine waste incineration power plant, design data and historical data are collected and summarized as shown in the following table:
wherein, for the four furnaces and three machines of this scheme, M marks the incinerator or the exhaust-heat boiler, the value is 1, 2, 3, 4, N marks the turbo generator, the value is 1, 2, 3, the scheme is the same as below.
3) Determining operating condition parameters, real-time calculation parameters and verification calculation parameters
The real-time parameters are divided into three types, namely operation condition parameters, real-time calculation parameters and verification calculation parameters, wherein the operation condition parameters are used for judging whether the incinerator, the waste heat boiler and the steam turbine generator are in steady operation or not, the real-time calculation parameters are used for calculating the real-time waste incineration amount, and the verification calculation parameters are used for verifying the calculated real-time waste incineration amount. Real-time data of all real-time parameters are obtained from a real-time database.
The operating condition parameters, symbols, units and attributions of the four-furnace three-machine are shown in the following table.
The real-time calculation parameters, symbols, units and attributions of the four furnaces and the three machines are shown in the following table.
| Parameter name | Parameter symbol | Unit of parameter | Parameter attribution |
| Operating state of incinerator | SFM | 0/1 | Incinerator |
| Main steam flow of waste heat boiler | SFBM | t/h | Waste heat boiler |
| Active power | EGN | Megawatt | Steam turbine generator |
The parameters, symbols, units and attributions of the calibration calculation of the four furnaces and the three machines are shown in the following table.
| Parameter name | Parameter symbol | Unit of parameter | Parameter attribution |
| Operating state of incinerator | SFM | 0/1 | Incinerator |
| Accumulating the garbage disposal amount | LJFM | t | Incinerator |
4) Judging whether the incinerator is in steady operation
Obtaining the operating condition parameters of the incinerator in the step 2) from a real-time database at tHistoryHistorical data over time (where tHistoryDefined as time period t-6min to t-1s) and defines three incinerator boundary conditions:
incinerator boundary conditions one: incinerator operating state SFMAll of the historical data of (1);
incinerator boundary conditions two: primary air flow F of grateFMThe historical data of (2) is all larger than 5000Nm3/h, and the data fluctuation range does not exceed +/-50% of the arithmetic mean value of the historical data;
incinerator boundary conditions three: incinerator furnace temperature IFMAll of the historical data of (1) is greater than 750 ℃, and the data fluctuation range does not exceed +/-20% of the arithmetic mean of the historical data.
When the above three boundary conditions of the incinerator No. M are satisfied simultaneously, the incinerator is considered to be in steady-state operation. If at least one incinerator is in steady-state operation, the whole incinerator is considered to be in steady-state operation, and the next step of calculation can be continued; otherwise, the whole incinerator is considered to be in unsteady state operation, the calculation at the current time t is skipped, and the next round of calculation is carried out.
5) Judging whether the exhaust-heat boiler operates in a steady state or not
Obtaining the operating condition parameters of the waste heat boiler in the step 2) from a real-time database at tHistoryHistorical data over time (where tHistoryDefined as a time period from t-6min to t-1s), and defining three boundary conditions of the waste heat boiler:
boundary of waste heat boilerThe first condition is as follows: intermediate layer temperature T of first vertical flue of waste heat boilerBMThe historical data is all more than 700 ℃, and the data fluctuation range does not exceed +/-50% of the arithmetic mean value of the historical data;
and (2) boundary conditions of the waste heat boiler are as follows: opening VO of main steam electric gate valve of waste heat boilerB MThe historical data is all larger than 5%, and the data fluctuation range does not exceed +/-20% of the arithmetic mean value of the historical data;
boundary conditions of the waste heat boiler are as follows: economizer inlet feed water pressure PBMThe historical data of (2) are all larger than 3.0MPa, and the data fluctuation range does not exceed +/-50% of the arithmetic mean value of the historical data.
And (4) when the three boundary conditions of the No. M waste heat boiler are simultaneously met and the corresponding incinerator is in steady-state operation according to the step 4), determining that the No. M waste heat boiler is in steady-state operation. If at least one waste heat boiler and the corresponding incinerator are in steady-state operation, the whole waste heat boiler is considered to be in steady-state operation, and then the next step of calculation can be continued; otherwise, the whole waste heat boiler is considered to be in unstable state operation, the calculation at the current time t is skipped, and the next round of calculation is carried out.
6) Judging whether the turbonator operates in a steady state or not
Obtaining the operating condition parameters of the turbonator in the step 2) from a real-time database at tHistoryHistorical data over time (where tHistoryDefined as the time period from t-6min to t-1s), and defining the boundary conditions of three turbonators:
boundary conditions of the turbonator are as follows: steam turbine operating state STNAll of the historical data of (1);
and boundary conditions of the steam turbine generator are as follows: front temperature T of main valveTNThe historical data is all more than 350 ℃, and the data fluctuation range does not exceed +/-20% of the arithmetic mean value of the historical data;
and boundary conditions of the turbonator are as follows: main valve front pressure PTNThe historical data of (2) are all larger than 3.0MPa, and the data fluctuation range does not exceed +/-50% of the arithmetic mean value of the historical data.
And when the three boundary conditions of the No. N steam turbine generator are simultaneously met, the No. N steam turbine generator is considered to be in steady-state operation. If at least one turbonator is in steady-state operation, the whole turbonator is considered to be in steady-state operation, and the calculation of the next step can be continued; otherwise, the turbonator is considered to be in unsteady state operation, the calculation at the current time t is skipped, and the next round of calculation is carried out.
7) Comprehensively judging whether four furnaces and three machines are in steady-state operation
If the incinerator, the waste heat boiler and the steam turbine generator are judged to be in steady-state operation according to the steps 4), 5) and 6), the four furnaces and the three turbines are considered to be in steady-state operation, and then the calculation of the next step can be continued; otherwise, the four furnaces and the three machines are considered to be in unsteady state operation, the calculation at the current time t is skipped, and the next round of calculation is carried out.
8) Real-time computed parametric data filtering
If the four furnaces and the three machines are judged to be in steady-state operation according to the step 7), acquiring real-time data X (t) of the real-time 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 real-time calculation of parameters at tHistoryArbitrary data in time period, m is parameter at tHistoryStatistical amount of data over a period of time.
If the real-time data X (t) meets the formula (1), the real-time data X (t) is regarded as reliable data, and the next calculation is continued; otherwise, the data is considered as unreliable data, the data does not participate in the real-time calculation of the current round, and the next round of calculation is started.
9) Calculating real-time garbage incineration amount of whole plant
If the four furnaces and the three machines are in steady-state operation according to the step 7), and when the real-time calculation parameter active power of at least one turbonator at the current time t is determined to be reliable data according to the step 8), calculating the whole-plant real-time waste incineration quantity LJ at the current time t according to the formula (2)Plant(t)：
In the formula (2), M identifies the incinerator or the waste heat boiler and takes values of 1, 2, 3 and 4, and N identifies the turbonator and takes values of 1, 2 and 3. Wherein, the first day of the month is calculated by the formula (2.1), and the rest is calculated by the formula (2.2).
10) Checking real-time garbage incineration amount of whole plant
According to the step 7), judging that the four furnaces and the three machines are in steady-state operation, acquiring three historical data with the numerical values of the checking calculation parameter accumulated incineration amount of the 4 incinerators determined in the step 2) before the current time t from a real-time database, and calculating real-time garbage incineration amount checking data LJ of the whole plant according to the formula (3)Check1(t)：
In the formula (3), t-3、t-2、t-1The history time points corresponding to three pieces of history data whose numerical values are not repeated before the current time point t are respectively shown.
Then, calculating real-time garbage incineration amount check data LJ of the whole plant according to the formula (4)Check2(t)：
Then, carrying out data verification on the real-time garbage incineration amount of the whole plant according to the formula (5):
calculating the real-time garbage incineration amount of the whole plant and simultaneously satisfying (5.1) and (5.2) in the formula (5), if the verification is qualified, continuing the real-time calculation of the whole plant; if the real-time garbage incineration amount of the whole plant does not satisfy the formula (5), checking is unqualified, a result is not output, the calculation of the current round is terminated, and the next round of calculation is carried out.
11) Calculating the real-time garbage burning amount of each incinerator
According to the step 4) and the step 5), the boundary condition of the No. M incinerator and the boundary condition of the No. M waste heat boiler are simultaneously met, and the No. M incinerator and the No. M waste heat boiler are judged to be in steady-state operation.
Determining the main steam flow SF of the waste heat boiler at the M th waste heat boiler at the current t moment according to the step 8)BMWhen the data is reliable, the real-time waste incineration amount LJ of the No. M incinerator is calculated according to the formula (6)FM(t)：
And finally, calculating in real time to obtain the waste incineration amount of each steady-state operation incinerator.
12) 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 garbage incineration amount of the whole plant and the real-time garbage incineration amount of each steady-state operation incinerator calculated in the step 11) into a real-time database, finishing the real-time calculation of the round, and entering the next round of calculation (at the moment of t +1 s).
Claims (3)
1. A method for calculating the waste incineration amount of a four-furnace three-machine waste incineration power plant in real time is characterized by comprising the following steps;
1) start the current round of real-time calculation
Defining the current time t as reference time, and starting the current round of real-time calculation;
2) collecting design data and historical data
Collecting design data and historical data aiming at a four-furnace three-machine waste incineration power plant;
3) determining operating condition parameters, real-time calculation parameters and verification calculation parameters
Dividing the real-time parameters into three types, namely operating condition parameters, real-time calculation parameters and checking calculation parameters, wherein the operating condition parameters are used for judging whether the incinerator, the waste heat boiler and the steam turbine generator are in steady operation or not, the real-time calculation parameters are used for calculating the real-time waste incineration amount, the checking calculation parameters are used for checking the calculated real-time waste incineration amount, and the real-time data of all the real-time parameters are obtained from a real-time database;
4) judging whether the incinerator is in steady operation
Obtaining the operating condition parameters of the incinerator in the step 2) from a real-time database at tHistoryHistorical data over time (where tHistoryDefined as time period t-6min to t-1s) and defines three incinerator boundary conditions:
incinerator boundary conditions one: incinerator operating state SFMAll of the historical data of (1);
incinerator boundary conditions two: primary air flow F of grateFMThe historical data of (2) is all larger than 5000Nm3/h, and the data fluctuation range does not exceed +/-50% of the arithmetic mean value of the historical data;
incinerator boundary conditions three: incinerator furnace temperature IFMThe historical data is all more than 750 ℃, and the data fluctuation range does not exceed +/-20% of the arithmetic mean value of the historical data;
when the three boundary conditions of the No. M incinerator are simultaneously met, the incinerator is determined to be in steady-state operation, if at least one incinerator is in steady-state operation, the whole incinerator is determined to be in steady-state operation, and the next step of calculation can be continued; otherwise, the whole incinerator is considered to be in unstable state operation, the calculation at the current time t is skipped, and the next round of calculation is carried out;
5) judging whether the exhaust-heat boiler operates in a steady state or not
Obtaining the operating condition parameters of the waste heat boiler in the step 2) from a real-time database at tHistoryHistorical data over time (where tHistoryDefined as a time period from t-6min to t-1s), and defining three boundary conditions of the waste heat boiler:
boundary conditions of the waste heat boiler are as follows: intermediate layer temperature T of first vertical flue of waste heat boilerBMThe historical data is all more than 700 ℃, and the data fluctuation range does not exceed +/-50% of the arithmetic mean value of the historical data;
and (2) boundary conditions of the waste heat boiler are as follows: opening VO of main steam electric gate valve of waste heat boilerBMThe historical data is all larger than 5%, and the data fluctuation range does not exceed +/-20% of the arithmetic mean value of the historical data;
boundary conditions of the waste heat boiler are as follows: economizer inlet feed water pressure PBMThe historical data of (2) is all larger than 3.0MPa, and the data fluctuation range does not exceed +/-50% of the arithmetic mean value of the historical data;
when the three boundary conditions of the waste heat boiler No. M are simultaneously met and the corresponding incinerator is in steady-state operation according to the step 4), the waste heat boiler No. M is considered to be in steady-state operation, if at least one waste heat boiler and the corresponding incinerator are in steady-state operation, the whole waste heat boiler is considered to be in steady-state operation, and the next step of calculation can be continued; otherwise, the whole waste heat boiler is considered to be in unstable state operation, the calculation at the current time t is skipped, and the next round of calculation is carried out;
6) judging whether the turbonator operates in a steady state or not
Obtaining the operating condition parameters of the turbonator in the step 2) from a real-time database at tHistoryHistorical data over time (where tHistoryDefined as the time period from t-6min to t-1s), and defining the boundary conditions of three turbonators:
boundary conditions of the turbonator are as follows: steam turbine operating state STNAll of the historical data of (1);
and boundary conditions of the steam turbine generator are as follows: front temperature T of main valveTNThe historical data is all more than 350 ℃, and the data fluctuation range does not exceed +/-20% of the arithmetic mean value of the historical data;
and boundary conditions of the turbonator are as follows: main valve front pressure PTNThe historical data of (2) is all larger than 3.0MPa, and the data fluctuation range does not exceed +/-50% of the arithmetic mean value of the historical data;
when the three boundary conditions of the No. N steam turbine generator are simultaneously met, the No. N steam turbine generator is considered to be in steady-state operation, if at least one steam turbine generator is in steady-state operation, the whole steam turbine generator is considered to be in steady-state operation, and then the next step of calculation can be continued; otherwise, the turbonator is considered to be in unsteady state operation, the calculation at the current time t is skipped, and the next round of calculation is carried out;
7) comprehensively judging whether four furnaces and three machines are in steady-state operation
If the incinerator, the waste heat boiler and the steam turbine generator are judged to be in steady-state operation according to the steps 4), 5) and 6), the four furnaces and the three turbines are considered to be in steady-state operation, and then the calculation of the next step can be continued; otherwise, the four furnaces and the three machines are considered to be in unsteady state operation, the calculation at the current time t is skipped, and the next round of calculation is carried out;
8) real-time computed parametric data filtering
If the four furnaces and the three machines are judged to be in steady-state operation according to the step 7), acquiring real-time data X (t) of the real-time 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 real-time calculation of parameters at tHistoryArbitrary data in time period, m is parameter at tHistoryStatistical amount of data over a period of time;
if the real-time data X (t) meets the formula (1), the real-time data X (t) is regarded as reliable data, and the next calculation is continued; otherwise, the data is considered as unreliable data, the data does not participate in the real-time calculation of the current round, and the next round of calculation is started;
9) calculating real-time garbage incineration amount of whole plant
If the four furnaces and the three machines are in steady-state operation according to the step 7), and when the real-time calculation parameter active power of at least one turbonator at the current time t is determined to be reliable data according to the step 8), calculating the whole-plant real-time waste incineration quantity LJ at the current time t according to the formula (2)Plant(t)：
In the formula (2), M designates an incinerator or a waste heat boiler and takes values of 1, 2, 3 and 4, and N designates a turbonator and takes values of 1, 2 and 3; wherein, the first day of the first month is calculated by the formula (2.1), and the rest time is calculated by the formula (2.2);
10) checking real-time garbage incineration amount of whole plant
According to the step 7), judging that the four furnaces and the three machines are in steady-state operation, acquiring three historical data with the numerical values of the checking calculation parameter accumulated incineration amount of the 4 incinerators determined in the step 2) before the current time t from a real-time database, and calculating real-time garbage incineration amount checking data LJ of the whole plant according to the formula (3)Check1(t)：
In the formula (3), t-3、t-2、t-1Respectively representing historical moments corresponding to three historical data with non-repeated numerical values before the current t moment;
then, calculating real-time garbage incineration amount check data LJ of the whole plant according to the formula (4)Check2(t)：
Then, carrying out data verification on the real-time garbage incineration amount of the whole plant according to the formula (5):
calculating the real-time garbage incineration amount of the whole plant and simultaneously satisfying (5.1) and (5.2) in the formula (5), if the verification is qualified, continuing the real-time calculation of the whole plant; if the calculated real-time garbage incineration amount of the whole plant does not meet the formula (5), checking the garbage to be unqualified, not outputting a result, terminating the calculation of the current round, and entering the next round of calculation;
11) calculating the real-time garbage burning amount of each incinerator
According to the step 4) and the step 5), if the boundary condition of the No. M incinerator and the boundary condition of the No. M waste heat boiler are simultaneously met, judging that the No. M incinerator and the waste heat boiler are in steady-state operation;
determining the main steam flow SF of the waste heat boiler at the M th waste heat boiler at the current t moment according to the step 2)BMWhen the data is reliable, the real-time waste incineration amount LJ of the No. M incinerator is calculated according to the formula (6)FM(t)：
Finally, calculating in real time to obtain the waste incineration amount of each incinerator in steady state operation;
12) 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 garbage incineration amount of the whole plant and the real-time garbage incineration amount of each steady-state operation incinerator calculated in the step 11) into a real-time database, finishing the real-time calculation of the round, and entering the next round of calculation (at the moment of t +1 s).
2. The method for calculating the waste incineration capacity of the four-furnace three-machine waste incineration power plant according to the claim 1, wherein the collected design data and the historical data collected in the step 2) are shown in the following table:
3. the method for calculating the waste incineration amount of the four-furnace three-machine waste incineration power plant according to the claim 1, wherein the four-furnace three-machine operation condition parameters, the real-time calculation parameters and the check calculation parameters determined in the step 3) are respectively as follows;
the operating condition parameters, symbols, units and attributions of the four-furnace three-machine are shown in the following table;
the real-time calculation parameters, symbols, units and attributions of the four furnaces and the three machines are shown in the following table;
the checking calculation parameters, symbols, units and attributions of the four furnaces and the three machines are shown in the following table;
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