JP2011123650A - Energy saving evaluation plant simulator and energy saving evaluation method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To evaluate various operation patterns from the viewpoint of energy saving by calculating a value of an index for evaluating the energy saving, in the various operation patterns and various kinds of plant conditions. <P>SOLUTION: This energy saving evaluation plant simulator 10 includes: a simulator operation means 11 receiving a simulation execution request; a simulation means simulating the control or monitoring of a plant that is an energy saving evaluation target; an energy saving arithmetic part 24 evaluating a plant operation situation of a simulation target from an energy saving aspect based on energy saving parameters about the plant of the simulation target; and a display operation means 13 presenting a simulation/evaluation result to a user. The energy saving arithmetic part 24 includes: an energy saving parameter calculation part 35 obtaining a value of each energy saving parameter from a process amount obtained from the simulation means; and an energy saving parameter integration part 36 integrating each calculated energy saving parameter value for a prescribed time in each energy saving parameter. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention is an index (emission reduction of fuel, power generation cost, CO _2, etc.) that can evaluate a predetermined energy saving (energy saving is an abbreviation for energy saving and the same shall apply hereinafter) under various operation patterns and various plant conditions. The present invention relates to an energy-saving evaluation plant simulation apparatus and an energy-saving evaluation method that can calculate a value of an amount and the like.

  The operation to operate the plant properly cannot be acquired in a short period of time, and it is necessary to train the operation of the plant. Under such circumstances, a plant simulator device (plant simulation device) that simulates the actual plant operation has been developed and used mainly for the purpose of training the start-up and stop operations of the plant and the methods for dealing with plant accidents. ing. As an example of a plant simulator device, there is one described in Patent Document 1, for example.

On the other hand, in recent years, energy saving and CO ₂ emission reduction have become major issues due to global warming problems, and efforts are being made in various industrial fields. Regarding the operation of the plant, it can be said that it is preferable to reduce the environmental load with energy saving as much as possible because it consumes a lot of energy and discharges gas such as CO ₂ .

JP 2002-202809 A

However, in the conventional plant simulator apparatus described in the above-mentioned Patent Document 1 or the like, only verification / simulation is performed by a simulator apparatus of a plant (for example, a model of a plant of a thermal power plant), and energy saving ( For example, no consideration is given to the reduction of fuel, power generation cost, CO _{2 and the} like.

In recent years when energy conservation and CO ₂ emission reduction have become major issues due to global warming problems and the like, even if the same demands are satisfied, it is required to save energy as much as possible. In other words, as for the operation of the plant, it is natural to balance supply and demand, and even if the same supply and demand are balanced, it is required to operate in such a way as to save energy and reduce the environmental load as much as possible. .

In view of the above-described problems, the present invention is provided with indexes that can evaluate energy saving (reduction of fuel, power generation cost, CO _2, etc.), and the values of these indexes are set in various operation patterns and various plant conditions. An object of the present invention is to provide an energy saving evaluation plant simulation apparatus and an energy saving evaluation method that can be calculated.

  In order to solve the above-described problems, an energy-saving evaluation plant simulation apparatus according to the present invention performs simulator operation means for receiving an input operation when executing plant control and monitoring simulation, and controls and monitors a plant that evaluates energy saving. Simulation means for simulating, energy saving evaluation means for evaluating the operation state of the plant to be simulated based on preset energy saving parameters, from the energy saving aspect, results of simulation by the simulation means, and evaluation by the energy saving evaluation means Storage means for associating and storing identification information corresponding to each operation pattern to be simulated, plant conditions and energy saving parameters in the operation pattern, and simulation Display operation means for presenting the result of simulation by the stage and the result of evaluation by the energy saving evaluation means, and the energy saving evaluation means is based on mathematical formula information that defines the relationship between the process amount of the plant and the energy saving parameters. An energy saving parameter calculation unit for obtaining each energy saving parameter from a process amount obtained as a result of simulation by the simulation means, and an energy saving parameter integration unit for integrating the energy saving parameter calculated by the energy saving parameter calculation unit for each energy saving parameter for a predetermined time And.

  In order to solve the above-described problems, an energy saving evaluation method according to the present invention simulates simulator operation means that accepts an input operation when executing simulation of plant control and monitoring, and control and monitoring of a plant that evaluates energy saving. A simulation unit, an energy saving evaluation unit that evaluates an operation state of a plant to be simulated based on a preset energy saving parameter, and a display operation unit that presents a result of simulation and evaluation performed by the simulator calculation unit The energy-saving evaluation plant simulation device is used to evaluate the operation state of the simulated plant, and the energy-saving evaluation means calculates the relationship between the simulated plant process amount and the energy-saving parameter. A step of obtaining each energy saving parameter from a process amount obtained as a result of simulation of the simulation means based on mathematical expression information to be determined; and a step of integrating the obtained energy saving parameter for each energy saving parameter for a predetermined time by the energy saving evaluation means And the step of displaying the integration result for each obtained energy saving parameter on the display operation means.

According to the present invention, an index capable of evaluating energy saving such as fuel consumption, power generation cost, CO ₂ generation amount (emission amount), thermal efficiency, loss, etc. is prepared, and the energy saving prepared in various operation patterns and various plant conditions is provided. Since the value of the index that can be evaluated can be calculated, it is possible to examine what operation pattern saves energy.

Schematic which showed the apparatus structural example of the energy-saving evaluation plant simulation apparatus which concerns on embodiment of this invention. Explanatory drawing which showed the process step of the energy-saving parameter calculation processing procedure which the energy-saving evaluation plant simulation apparatus which concerns on embodiment of this invention performs. Explanatory drawing which showed the concept of the data format of the plant operation record recorded by the energy-saving evaluation plant simulation apparatus which concerns on embodiment of this invention. Explanatory drawing which showed the concept of the data format of the energy-saving pattern log | history recorded by the energy-saving evaluation plant simulation apparatus which concerns on embodiment of this invention. Explanatory drawing which showed the process step of the loss calculation process procedure which the energy-saving evaluation plant simulation apparatus which concerns on embodiment of this invention performs. Explanatory drawing which showed the processing step of the energy-saving driving | operation evaluation comparison arithmetic processing procedure which the energy-saving evaluation plant simulation apparatus which concerns on embodiment of this invention performs. Explanatory drawing which showed the process step of the reproduction | regeneration driving | operation data switching process procedure which the energy-saving evaluation plant simulation apparatus which concerns on embodiment of this invention performs. Explanatory drawing which showed the process step of the cost calculation processing procedure which the energy-saving evaluation plant simulation apparatus which concerns on embodiment of this invention performs.

  Hereinafter, embodiments of an energy saving evaluation plant simulation device and an energy saving evaluation plant simulation method according to embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic diagram illustrating a configuration example of an energy saving evaluation plant simulation device (hereinafter referred to as “energy saving evaluation plant simulation device”) 10 according to an embodiment of the present invention.

  The energy-saving evaluation plant simulation apparatus 10 shown in FIG. 1 is, for example, a computer (hardware) and a program (hereinafter referred to as “energy-saving evaluation”) that causes the computer to function as means described later or cause the computer to execute a processing procedure described later. The function is realized by cooperating with "Plant Simulated PG" and the program is abbreviated as PG.

  That is, in the example of the energy-saving evaluation plant simulation device 10 shown in FIG. 1, a computer that executes the energy-saving evaluation plant simulation PG and exhibits the functions described above and a device that constitutes an input / output interface (man-machine interface) Is connected so as to be able to exchange information, thereby realizing a function as a plant simulation device capable of energy saving evaluation.

The following description is an example in which the plant simulated by the energy-saving evaluation plant simulation apparatus 10 shown in FIG. 1 is a coal-fired thermal power plant, for example, and the energy-saving parameter is, for example, CO ₂ emissions (however, However, this does not apply to the points that are described by setting up separate cases).

  As shown in FIG. 1, an energy-saving evaluation plant simulation device 10 includes a simulator operation unit 11 that receives an input operation of a user who wants to execute simulation for simulating plant control and monitoring, and a plant to be evaluated for energy-saving evaluation. A simulator computing unit 12 that simulates and evaluates the simulated operating state of the plant from the viewpoint of energy saving, and an energy saving parameter display operating unit 13 that presents a result of simulation and evaluation by the simulator computing unit 12 to the user are provided.

  The simulation operation means 11 is provided with control switches and instruments collectively, and has a control panel 15 for controlling and monitoring the plant simulated by the energy-saving evaluation plant simulator 10 and a monitor screen. And an interactive display device 16 capable of operating the energy-saving evaluation plant simulation device 10 through.

  In addition to simulation means for simulating plant control and monitoring, the simulator calculation means 12 includes energy saving evaluation means for evaluating the operation of a plant that is a simulation target in terms of energy saving based on a preset index for evaluating energy saving. In addition, it is configured.

  More specifically, the simulator computing unit 12 includes a simulator input / output unit 21 serving as an input / output interface with the simulator operating unit 11, and a control system computing unit that performs computation of a control system of a plant to be simulated. 22, a dynamic characteristic calculation unit 23 for calculating the dynamic characteristic in the plant, an energy saving calculation unit 24 for calculating an energy saving parameter according to the operation result of the plant to be simulated, and an electron used in the calculation of the energy saving parameter And a recording unit 25 for recording and storing data.

  The simulator input / output unit 21 of the simulator calculation unit 12 receives the operation content input to the simulator operation unit 11 and transmits the received operation content to the control system calculation unit 22. Further, the simulator input / output unit 21 transmits the calculation result in the control system calculation unit 22 to the simulator operation means 11.

  The control system calculation unit 22 has a function of calculating a control system in a plant to be simulated. The control system calculation unit 22 includes an energy-saving reproduction data switching unit 31 that selects one operation pattern to be reproduced from a plurality of accumulated operation patterns and reproduces the selected operation pattern. The operation pattern to be regenerated can be switched as appropriate to calculate the control system in the plant to be simulated.

  That is, the energy saving reproduction data switching unit 31 has a function of specifying an operation pattern based on a selection command input from the simulation operation unit 11 via the simulator input / output unit 21 and one operation specified from a plurality of operation patterns. The function of reproducing the pattern is provided, and the operation pattern to be reproduced can be switched in accordance with the input selection command.

  The dynamic characteristic calculation unit 23 has a function of calculating, for example, a process amount such as temperature, pressure, potential, and rotation speed during plant operation as a dynamic characteristic in the plant to be simulated. The quantity is calculated. The calculation result of the dynamic characteristic calculation unit 23 of the plant to be simulated is sent to the energy saving calculation unit 24.

  The energy saving calculation unit 24 corresponds to an energy saving evaluation unit, and includes an energy saving parameter calculation unit 35, an energy saving parameter integration unit 36, a loss calculation unit 37, an energy saving operation evaluation value comparison unit 38, and an evaluation value switching unit 39. And an energy saving parameter conversion unit 40. The recording unit 25 is a storage unit having a storage area that records and stores (saves) information in a state that can be read by the energy saving operation unit 24. In this storage area, a plant operation record 45, and an energy saving operation record are stored. 46, an energy saving parameter history 47, a loss calculation result history 48, and an energy saving evaluation parameter 49 are recorded and stored.

The energy saving parameter calculation unit 35 of the energy saving calculation unit 24 includes, for example, process amounts such as temperature, pressure, potential, and rotation speed, and energy saving parameters such as fuel consumption, CO ₂ generation amount (discharge amount), thermal efficiency, loss, and the like. And has a function of obtaining a value for an energy saving parameter (hereinafter referred to as “energy saving parameter value”) based on a process amount obtained as a calculation result.

The energy saving parameter calculation unit 35 receives the dynamic characteristic calculation result in the plant to be simulated from the dynamic characteristic calculation unit 23, and based on the process amount as the dynamic characteristic calculation result, the CO ₂ generation amount (discharge amount), the thermal efficiency, Energy saving parameter values for the set energy saving parameters such as fuel consumption can be calculated. The calculation result of the energy saving parameter is sent to the energy saving parameter integrating unit 36.

  Based on the energy saving parameter value calculated by the energy saving parameter calculation unit 35, the energy saving parameter integration unit 36 integrates each energy saving parameter value in a predetermined time such as from the start to the stop of the plant. Then, the integrated result of the energy saving parameter is stored in the recording unit 25 as the energy saving parameter history 47 together with the ID as the operation pattern identification information corresponding to the individual operation pattern to be simulated and the plant condition when a series of operations are performed.

  The loss calculation unit 37 has a function of calculating a loss due to occurrence of a state different from a steady state (hereinafter referred to as “abnormal time”) such as start-stop when an accident occurs. Here, the loss refers to a physical quantity (for example, heat quantity or power generation quantity) that could not be generated due to an abnormality such as an accident. If the amount of heat (kJ) that could not be generated due to an accident or the like is described as an example, how much the amount of generated heat is reduced compared to the steady state is a loss, and the loss calculation unit 37 determines the amount of generated heat. The amount of decrease is calculated as a loss. Then, the calculation result is stored in the recording unit 25 as a loss calculation result history 48 and is output to the energy saving parameter display operation unit 13.

  The energy-saving operation evaluation value comparison unit 38 has a function of comparing the energy-saving parameter that is currently executing the simulation with the energy-saving parameter that has been executed in the past for the same energy-saving parameter to be compared.

Energy saving driving evaluation value comparing unit 38, evaluation value of the energy-saving parameters during past simulation to be compared party designated by the user (e.g., CO ₂ emissions when energy saving parameter to be compared to the amount of produced CO ₂₎ While extracting by referring to the energy saving parameter history 47, the current simulation is executed, and the evaluation value of the CO ₂ generation amount that is the energy saving parameter to be compared from the energy saving parameter recorded in the recording unit 25 (of the energy saving parameter integrating unit 36 Output value). Then, the energy saving operation evaluation value comparison unit 38 compares the two acquired energy saving parameter evaluation values.

Moreover, the energy-saving operation evaluation value comparison unit 38 is the most energy-saving with respect to the comparison target parameter among the simulations executed in the past (when the comparison target parameter is the CO ₂ generation amount, the CO ₂ generation amount is the minimum). If the result of the comparison shows that the result of the comparison is that the operation pattern currently being executed for the CO ₂ generation amount to be compared is smaller (energy saving), the energy saving operation evaluation value comparison The unit 38 stores this operation pattern in the recording unit 25 as the energy saving operation record 46 that minimizes the amount of CO ₂ generated.

  The energy saving operation evaluation value comparison unit 38 is configured to be able to be compared with the past simulation execution result designated by the user. However, the past simulation result to be compared is the energy saving parameter to be compared. It can also be set in advance or afterwards so as to obtain a simulation result when energy saving is most excellent.

  In addition, when the energy-saving operation evaluation value comparison unit 38 receives a command to change to a new comparison target from the evaluation value switching unit 39, based on the command, for the parameter that is a new comparison target, The above-described processing is executed. In other words, if the driving pattern currently being executed and the history of the most energy-saving (higher evaluation) in the past are extracted and compared, and the driving pattern currently being executed is more highly evaluated The energy saving operation evaluation value comparison unit 38 stores the operation pattern in the recording unit 25 as the energy saving operation record 46 having the highest evaluation for the parameter.

  In addition, since it is necessary to compare the energy saving parameter history 47 among those having the same purpose regarding the state transition of the plant, the energy saving comparison category is designated when performing the simulation operation, and the data in the same category A comparison shall be made.

  The evaluation value switching unit 39 recognizes the request for changing the comparison target to be evaluated for the energy saving operation by the energy saving operation evaluation value comparison unit 38 and the comparison target performed by the energy saving operation evaluation value comparison unit 38. And a function of transmitting a command for changing to a new comparison target based on the change request to the energy saving operation evaluation value comparison unit 38.

  In other words, the evaluation value switching unit 39 specifies one energy saving parameter selected as the energy saving parameter used when the energy saving operation evaluation value comparison unit 38 compares the energy saving operation from a plurality of preset energy saving parameters. The energy saving parameter is switched so that the energy saving operation evaluation value comparison unit 38 compares the energy saving operation according to the specified energy saving parameter. When the evaluation value switching unit 39 receives a request for changing from the comparison target currently performed by the energy saving operation evaluation value comparison unit 38 to a new comparison target, the evaluation value switching unit 39 evaluates the new energy saving operation based on the request. The command to change to is transmitted to the energy saving operation evaluation value comparison unit 38.

  The energy saving parameter conversion unit 40 converts all of the energy saving parameter history 47 from the energy saving evaluation parameter 49 received from the energy saving evaluation parameter 49 (labor cost, unit price of fuel, unit price of electric power purchase, etc.) into a cost amount, and evaluates the energy saving operation. While handing over data to the value comparison unit 38, the evaluation standard of the energy saving operation evaluation value comparison unit 38 is changed to a cost amount, and comparison of the delivered data is promoted.

  The plant operation record 45 stored in the recording unit 25 stores, for example, operation contents received by the simulator operation means 11 such as opening / closing of valves as an operation pattern. The plant operation record 45 is assigned an ID corresponding to each operation pattern to be simulated, and is stored so that each simulated operation pattern can be identified.

The energy saving operation record 46 stores the operation record having the highest evaluation, that is, the operation content in the simulator operation means 11 as a result of comparing the evaluation values selected by the energy saving operation evaluation value comparison unit 38 among the plant operation records 45. It is a thing. For example, the evaluation comparison subject to parameters of energy saving operation is in the case of CO ₂ generation amount, the amount of produced CO ₂ is determined to highest evaluation operation records the operation pattern which is minimized, is stored as energy-saving operation records 46 . The energy saving operation record 46 is stored for each evaluation value that can be selected by the energy saving operation evaluation value comparison unit 38.

  The energy saving parameter history 47 is stored together with the calculation results of the individual energy saving parameters calculated by the energy saving parameter integrating unit 36 and IDs corresponding to the individual operation patterns that simulate the simulated plant conditions. That is, the energy saving parameter history 47 is stored in the recording unit 25 in association with the identification information corresponding to each simulated operation pattern, the plant condition and the energy saving parameter in the operation pattern.

  The loss calculation result history 48 is obtained by saving the loss calculation result of the loss calculation unit 37 by the loss calculation unit 37. For the loss calculation result history 48, the calculation result of the calculation result loss calculation unit 37 of the loss calculation unit 37 is stored together with the time when the abnormality occurred and the time when the abnormality was resolved. It is also possible to assign an identification number associated with an abnormality that has occurred during data storage and store it together with this.

  The energy saving evaluation parameter 49 is a parameter used when the energy saving parameter conversion unit 40 performs conversion for evaluating the energy saving parameter, and records, for example, labor cost, fuel unit price, power unit price, and the like. That is, it is a parameter for evaluating the driving method from a direction different from the energy saving parameter.

  The energy saving parameter display operation means 13 is stored in the information sent from the simulator computing means 12 and the plant operation record 45, energy saving operation record 46, energy saving parameter history 47, loss calculation result history 48 and energy saving evaluation parameter 49. A function for displaying information on the monitor, a function for editing data such as changing or deleting the plant operation record 45, the energy saving operation record 46, the energy saving parameter history 47, the loss calculation result history 48, and the energy saving evaluation parameter 49, and data And a parameter display / dialogue device 51 having functions for searching and printing. The parameter display / dialogue device 51 can be shared with the dialogue display device 16 of the simulator operating means 11.

  In addition, the structure of the energy-saving evaluation plant simulation apparatus 10 shown by FIG. 1 is an example, and is not necessarily limited to the structure shown by FIG. In the implementation stage, the constituent elements may be modified and embodied without departing from the spirit of the invention.

  For example, in the energy saving evaluation plant simulation apparatus 10 shown in FIG. 1, the control system calculation unit 22 includes the energy saving reproduction data switching unit 31, but the energy saving reproduction data switching unit 31 is independent of the control system calculation unit 22. You may comprise as. In addition, it is possible to adopt a configuration that does not implement a part of the processing procedure described later, and to delete a configuration that is used in the processing procedure that is not implemented. Furthermore, the energy-saving evaluation plant simulation apparatus 10 can be configured by adding a known and common technique at the time of filing not shown in FIG.

  Next, an operation of the energy saving evaluation plant simulation device 10 and a plant energy saving evaluation method using the energy saving evaluation plant simulation device 10 will be described.

<Calculation of energy saving parameters>
FIG. 2 is an explanatory diagram showing processing steps of an energy saving parameter calculation processing procedure as an energy saving evaluation method performed by the energy saving evaluation plant simulator 10. Note that components and processing steps not directly related to the energy saving parameter calculation processing procedure shown in FIG. 2 are omitted.

  The energy saving evaluation plant simulation apparatus 10 can evaluate whether or not the conditions of the plant to be simulated are effective from the viewpoint of energy saving, by the simulator calculating means 12 calculating energy saving parameters. The energy saving parameter calculation result by the simulator calculating means 12 is output from the simulator calculating means 12 to the energy saving parameter display operating means 13 and presented to the user.

  In the energy saving parameter calculation processing procedure shown in FIG. 2, when the user sets various plant conditions from the interactive display device 16 of the simulator operating means 11, the setting step is accepted and processing steps are started.

  First, in the energy saving parameter calculation processing procedure, the simulator operation means 11 corresponds to the operation contents of the control panel 15 and the dialog display device 16 including the setting of various plant conditions inputted by the user's operation of the control panel 15 and the dialog display device 16. A command to transmit is transmitted to the simulator computing means 12 (step S1). When the simulator calculating means 12 receives a command from the simulator operating means 11, it calculates the state of the plant to be simulated based on the received command. That is, a simulation operation of a plant to be simulated is performed (steps S2 and S3).

  More specifically, the operation information transmitted to the simulator calculation unit 12 via the simulator input / output unit 21 is input to the control system calculation unit 22 of the simulator calculation unit 12, and the control system calculation unit 22 receives the input simulator operation. A control system calculation corresponding to the operation information from the means 11 and the plant dynamic characteristic calculation result in the dynamic characteristic calculation unit 23 is performed (step S2). On the other hand, as shown in FIG. 1, the calculation result of the control system calculation unit 22 is transmitted to the dynamic characteristic calculation unit 23, and the dynamic characteristic calculation of the plant to be simulated in consideration of the calculation result of the control system calculation unit 22. Is performed (step S3).

  Subsequently, when the dynamic characteristic calculation unit 23 calculates the dynamic characteristic of the plant, the calculation result is transmitted from the dynamic characteristic calculation unit 23 to the energy saving calculation unit 24. In the energy saving calculation unit 24, the energy saving parameter calculation unit 35 calculates each energy saving parameter for each energy saving parameter set in advance as an evaluation comparison target of energy saving operation (step S4), and the energy saving parameter integration unit 36 calculates the energy saving. Each parameter is integrated to calculate an integrated value of each energy saving parameter, that is, an evaluation value (step S5).

  When the energy saving calculation unit 24 calculates the evaluation value of each energy saving parameter (steps S4 and S5), the energy saving calculation unit 24 uses the ID as operation pattern identification information corresponding to each operation pattern that simulates the evaluation value of each energy saving parameter. And it records in the energy-saving parameter log | history 47 with the various plant conditions used at the time of calculation (step S6). And when there exists a request | requirement from a user, the energy-saving calculating part 24 outputs the calculated evaluation value of each energy-saving parameter to the energy-saving parameter display operation means 13 (step S7).

  Each energy saving parameter registered and accumulated in the energy saving parameter history 47 can be searched from the energy saving parameter display operation means 13 using the ID and plant conditions as keys, and can be displayed or printed as necessary.

  On the other hand, the control system calculation part 22 records the operation content (history) at the time of calculating the evaluation value of each energy-saving parameter as an operation pattern, and uses the recorded data as a plant operation record 45 together with an ID corresponding to each operation pattern. Save (step S8). The plant operation record 45 can also be displayed on the energy saving parameter display operation means 13 when there is a request for display or the like from the user (step S9).

  Subsequently, when the simulated operation of the plant is completed, the recording and storing of the plant operation record 45 and the energy saving parameter history 47 of the simulated operation are completed, and the energy saving parameter calculation processing procedure is completed.

  In the energy saving parameter calculation processing procedure shown in FIG. 2, the evaluation value of each energy saving parameter calculated by the energy saving calculation unit 24 is performed after recording and storing the energy saving parameter history 47 (step S6). After step S7, step S7 may be executed simultaneously with or before step S6. In each calculation processing procedure other than those shown in FIG. 2, the calculation result may be displayed on the energy saving parameter display operation unit 13 at the same time or before the calculation result is recorded and stored.

  Data contents of the plant operation record 45 and the energy saving parameter history 47 stored in the recording unit 25 will be described.

  FIG. 3 is an explanatory diagram showing the concept of the data format of the plant operation record 45, and FIG. 4 is an explanatory diagram showing the concept of the data format of the energy saving pattern history 47.

  As shown in FIG. 3, the plant operation record 45 is given an ID corresponding to each operation pattern to be simulated every time a simulation operation is performed, and information indicating the time and operation content for each simulation operation is used as operation information. To be recorded. Further, as shown in FIG. 4, the energy saving pattern history 47 is assigned an ID corresponding to each operation pattern to be simulated every time a simulated operation is performed, and the plant conditions and energy saving parameters during the simulated operation are set for each simulated operation. To be recorded. Therefore, the plant conditions and energy saving parameters registered and accumulated in the plant operation record 45 and the energy saving parameter history 47 can be searched from the energy saving parameter display operation means 13 using the ID and plant conditions as keys.

<Calculation of loss due to occurrence of abnormal condition>
FIG. 5 is an explanatory diagram showing processing steps of a loss calculation processing procedure as an energy saving evaluation method performed by the energy saving evaluation plant simulation apparatus 10. Note that components and processing steps that are not directly related to the loss calculation processing procedure shown in FIG. 5 are omitted.

  In the loss calculation processing procedure shown in FIG. 5, the user inputs a loss calculation processing procedure execution start request from the dialog display device 16 of the simulator operating means 11, and the loss calculation processing procedure execution start request is received from the dialog display device 16. When sent to the simulator calculation means 12 via the input / output unit 21, the loss calculation processing procedure is started.

  As shown in FIG. 5, after receiving a process execution start request (step S11), the loss calculation unit 37 receives information on the fuel consumption (kg / h) stored in the energy saving parameter history 47 (step S12). Calculate the difference between fuel consumption during normal operation and abnormal operation △ Fuel consumption (kg / h), and multiply this calculation result with fuel calorific value (kJ / kg) to calculate the heat loss (kJ). Calculate (step S13). More specifically, the loss calculation unit 37 stores mathematical formula information of the following formulas (1) and (2), and finally calculates the heat loss (kJ).

[Equation 1]
△ Fuel consumption (kg / h) = Normal fuel consumption (kg / h)-Abnormal fuel consumption (kg / h) ... (1)
Heat loss (kJ) = △ Fuel consumption (kg / h) x Fuel heating value (KJ / kg) ... (2)

  The timing at which the loss calculation unit 37 starts calculating the amount of heat loss can be performed at an arbitrary timing set in advance by the user. A processing start request based on the user's operation may be received from the simulator operating means 11 to start the loss calculation processing procedure, or at the same time as the energy saving parameter calculation processing procedure is started, the heat loss calculation processing in real time (loss calculation processing procedure) May be continued. Further, for example, the heat loss calculation process may be executed at predetermined intervals such as every 10 minutes.

  For example, when a pipe leak accident is simulated, the flow rate of steam flowing through the pipe decreases, but when the trainee performs a recovery operation such as switching to a spare system, the overall steam flow rate is restored to the original normal value. When training is performed to return, the loss calculation unit 37 constantly monitors the monitoring parameter as the steam flow rate, starts loss calculation at a timing that deviates from a preset threshold value, and returns to the threshold value again. Automatically calculate loss.

  The loss calculation unit 37 can also calculate a loss required for plant stoppage (disconnection) and start-up (parallel) in addition to the loss calculation from the occurrence of an accident to the return. The travel cycle of the loss calculation unit 37 is a travel cycle corresponding to the mesh of data accumulated by the energy saving parameter accumulation unit 36. For example, when the energy saving parameter integration unit 36 stores the integration result in the energy saving parameter history 47 at a cycle of 1 minute, the travel cycle of the loss calculation unit 37 is also 1 minute.

  Since the fuel consumption is calculated by the flow rate per unit time, when using it at the time of calculating the loss, convert it to a value that matches the driving cycle. For example, when the unit of fuel consumption is kg / h and saved in the energy saving parameter history 47 at a cycle of 1 minute, the value is 1/60 of the fuel consumption (kg / h) in accordance with the driving cycle. That is, the loss is calculated using the fuel consumption per minute (kg / min).

  When the loss calculation unit 37 performs the loss calculation, the loss calculation result is subsequently stored as the loss calculation result history 48 (step S14). Moreover, the loss calculation part 37 outputs the information of a loss calculation result to the energy-saving parameter display operation means 13 (step S15). Then, the energy saving parameter display operation means 13 displays the received loss calculation result.

  Since the energy saving parameter history 47 is managed and saved after the training, the energy saving parameter history 47 designates an arbitrary time zone from the energy saving parameter history 47 saved during a certain training (for example, 20:12 to 21:45). ), It is possible to calculate the loss retroactively.

<Comparison and switching of energy-saving operation evaluation values>
FIG. 6 is an explanatory diagram showing processing steps of an energy saving operation evaluation comparison calculation processing procedure as an energy saving evaluation method performed by the energy saving evaluation plant simulation apparatus 10. Note that components and processing steps that are not directly related in the energy saving operation evaluation comparison calculation processing procedure shown in FIG. 6 are omitted.

  In the energy saving operation evaluation comparison calculation processing procedure shown in FIG. 6, the user inputs an execution start request for the energy saving operation evaluation calculation processing procedure from the dialogue display device 16 of the simulator operating means 11, and the energy saving operation evaluation calculation processing is executed from the dialogue display device 16. When a procedure execution start request is sent to the simulator calculation means 12 via the simulator input / output unit 21, the energy saving operation evaluation calculation processing procedure is started.

As shown in FIG. 6, after receiving the processing execution start request (step S < _b > 21), for example, the energy saving operation evaluation value comparison unit 38 selects the CO ₂ generation amount as an evaluation criterion for comparing evaluation values. If the amount of CO ₂ produced during the simulation as an evaluation criterion for comparing the evaluation value from energy-saving parameter history 47, in the same energy-saving comparing category, the evaluation value of the energy saving parameters most CO ₂ generation amount of was small in the past Take out and compare (step S22).

As a result of the comparison in step S22, if the amount of CO ₂ generated during the simulation is smaller, the operation pattern data at that time is saved from the plant operation record 45 to the energy saving operation record 46 (step S23). The contents of the operation pattern data stored in the energy saving operation record 46 can be displayed and confirmed on the parameter display / interaction device 51 (step S24). If the amount of CO ₂ generated during the simulation is larger, the operation pattern at that time is stored in the plant operation record 45. This point is as described with reference to FIG.

Moreover, the energy-saving evaluation plant simulation apparatus 10 can switch an evaluation value to be compared, that is, an evaluation criterion to be compared, in executing the energy-saving operation evaluation comparison calculation processing procedure. For example, the energy-saving operation evaluation value comparison unit 38 performs the evaluation while fixing to one evaluation standard (CO ₂ generation amount), but by further including the evaluation value switching unit 39, the evaluation value switching unit 39 can be changed from one evaluation standard to another. Comparison of energy-saving operation evaluation values set as evaluation standards is possible.

  The set contents are transmitted to the evaluation value switching unit 39, and the evaluation value switching unit 39 changes the evaluation criteria of the energy saving operation evaluation value comparison unit 38 (step S31) and is newly set from the energy saving parameter history 47. The history of energy-saving parameters during simulation corresponding to the evaluated evaluation criteria and the history of the energy-saving parameters with the highest evaluation regarding the evaluation criteria in the past in the same energy-saving comparison category are extracted (step S32), and the energy-saving operation evaluation This is transmitted to the value comparison unit 38 (step S33), and the comparison by the energy saving operation evaluation value comparison unit 38 is urged.

  The energy saving operation evaluation value comparison unit 38 saves the operation pattern at that time from the plant operation record 45 to the energy saving operation record 46 when the energy saving parameter history during the execution of the simulation is higher for the changed evaluation criteria ( Step S23). The contents of the operation pattern data stored in the energy saving operation record 46 can be displayed and confirmed on the parameter display / interaction device 51 (step S24).

<Switching operation data to be regenerated>
FIG. 7 is an explanatory diagram showing processing steps of a regeneration operation data switching processing procedure as an energy saving evaluation method performed by the energy saving evaluation plant simulator 10. In the regenerative operation data switching processing procedure shown in FIG. 7, the components and processing steps not directly related to the processing procedure are omitted.

  In the regenerative operation data switching processing procedure shown in FIG. 7, the user inputs a regenerative operation data switching processing procedure execution start request from the interactive display device 16 of the simulator operating means 11, and the state selection command is input to the simulator input / output from the interactive display device 16. When sent to the energy saving reproduction data switching unit 31 via the unit 21, the reproduction operation data switching processing procedure is started.

  As shown in FIG. 7, in the regeneration operation data switching processing procedure, after receiving the process execution start request (step S <b> 41), based on the state selection command received by the energy saving regeneration data switching unit 31, the plant operation record 45 and An operation pattern (operation state) that matches the selection command is extracted from the plurality of operation patterns stored in the energy saving operation record 46 (step S42), and the reproduction data is switched (step S43). When the energy saving reproduction data switching unit 31 switches reproduction data, that is, when an operation pattern that matches the selection command is selected, the control system calculation unit 22 performs simulated operation while switching various operation states according to the selected operation pattern. Is reproduced.

<Cost calculation>
FIG. 8 is an explanatory diagram showing processing steps of a cost calculation processing procedure as an energy saving evaluation method performed by the energy saving evaluation plant simulation apparatus 10. Note that components and processing steps not directly related to the cost calculation processing procedure shown in FIG. 8 are omitted.

  In the cost calculation processing procedure shown in FIG. 8, when a user inputs a cost calculation processing procedure start request from the dialogue display device 16 of the simulator operation means 11, the input is received and the simulator calculation means 12 starts the cost calculation processing procedure. .

  As shown in FIG. 8, in the cost calculation processing procedure, after accepting a process execution start request (step S51), the energy saving parameter conversion unit 40 stores the energy saving evaluation parameter (personnel cost, fuel unit price) stored in the energy saving evaluation parameter 49. , Power unit price, etc.) are read (step S52). Then, the energy saving parameter conversion unit 40 converts all of the data of the energy saving parameter history 47 into cost (amount) using the energy saving evaluation parameter received from the energy saving evaluation parameter 49 (step S53).

  When the conversion in step S53 is completed, the energy saving parameter conversion unit 40 delivers the data after cost conversion to the energy saving operation evaluation value comparison unit 38, and changes the evaluation standard of the energy saving operation evaluation value comparison unit 38 to the cost amount. The comparison of the delivered data is prompted (step S54). The following processing steps are the same as steps S22 to S24 in the processing procedure shown in FIG. 6 except that the evaluation criterion is a monetary amount.

  That is, the energy-saving operation evaluation value comparison unit 38 compares the data regarding the cost (step S22), and when the energy-saving parameter history during the simulation execution has a higher evaluation result (cost advantage), The operation pattern data is saved from the plant operation record 45 to the energy saving operation record 46 (step S23). The contents of the operation pattern data stored in the energy saving operation record 46 can be displayed and confirmed on the parameter display / interaction device 51 (step S24).

It is possible to evaluate not only energy-saving parameters but also operation methods that apply other evaluation criteria such as cost. This is because an objective evaluation can be made. For example, when an operation method (operation content and plant conditions) that minimizes CO ₂ emissions is found, and when the operation method is adopted, labor costs are approximately doubled compared to other operation methods. This is because the operation method is not necessarily an operation method that can be practically adopted by the user, and the evaluation result obtained by the energy-saving evaluation plant simulation apparatus 10 and the energy-saving evaluation method may become famous.

  As described above, since the energy-saving evaluation plant simulation device 10 can execute the cost calculation processing procedure, the plant operation method obtained by the energy-saving evaluation plant simulation device 10 is excellent in terms of energy saving but inferior in terms of cost. Judgment can be made and a more rational evaluation can be made.

As described above, according to the energy-saving evaluation plant simulation device 10 and the energy-saving evaluation method performed by the energy-saving evaluation plant simulation device 10, it is possible to calculate not only a simple plant simulation but also energy-saving parameters such as CO ₂ emission amount. Moreover, since the energy-saving parameter under various conditions can be calculated by operating (operating) the energy-saving evaluation plant simulation device 10 while changing the operation content and the plant conditions, the operation pattern for realizing further energy saving. Can be considered.

  Furthermore, since the loss calculation processing procedure can be executed, the heat loss amount is visually displayed in real time for the operation performed by the trainee who is the user, and the heat loss amount is calculated for the operation performed by the trainee. It is possible to carry out training to make it small.

In addition, if one energy saving parameter (for example, CO ₂ emission amount) is selected in advance from a plurality of energy saving parameters, while trying various operation patterns, more energy saving (based on the selected energy saving parameter ( the operation pattern of CO ₂ emissions is low) and it is determined, in each case, can be automatically saved. Therefore, the most energy-saving (low CO ₂ emission) operation pattern among the operation patterns tested is automatically saved. By applying this operation pattern to an actual plant, even in the actual plant Therefore, it is possible to realize the operation of a plant that is more energy saving (low CO ₂ emission amount).

Furthermore, by preparing a plurality of evaluation criteria that can be used as judgment materials for energy-saving operation and selecting them appropriately, not only one energy-saving parameter (for example, CO ₂ emissions) but also various evaluation criteria (for example, fuel consumption) , Thermal efficiency, loss, etc.), the most energy-saving operation pattern can be automatically saved each time, and by applying this operation pattern to the actual plant, more energy-saving operation can be realized even in the actual plant it can.

  Further, according to the energy saving evaluation plant simulation device 10 and the energy saving evaluation method performed by the energy saving evaluation plant simulation device 10, the energy saving evaluation plant simulation device 10 has a plurality of operation states (plant operation records 45 (energy saving operation records of n simulation operations). 46) and energy saving parameter history 47) are stored as information, so that switching of operating states that cannot be achieved by a conventional plant simulator apparatus or the like having only parameter history for one operating state. And reproduction can be realized. That is, it is possible to select and switch data to be reproduced from a plurality of energy saving operation states that are recorded, evaluated, and stored in advance.

  In addition, for various operation patterns stored in the energy-saving parameter history 47, other evaluation criteria that do not depend on the energy-saving parameter of cost (amount) using energy-saving evaluation parameters (personnel cost, fuel cost, unit price of electric power, etc.) are adopted. By being able to do so, not only can a comparison be made on a common soil, but also a more versatile evaluation is possible. In addition, it is possible to automatically save the best operation pattern from the viewpoint of cost amount from simulation results with more operation patterns each time, so by applying the saved operation pattern to the actual plant, the amount can be reduced. Minimized operation can be achieved.

  Note that the present invention is not limited to the above-described embodiment as it is, and may be embodied by modifying constituent elements without departing from the scope of the invention in the implementation stage. Further, each component can be implemented by deleting some components from all the components of the energy-saving evaluation plant simulation apparatus 10 shown in FIG. 1 or by appropriately combining components that are well-known and commonly used techniques at the time of this application. Various inventions may be formed by appropriately combining a plurality of constituent elements disclosed in the embodiments.

For example, in a case where the energy saving parameter is specialized to a single energy saving parameter such as CO ₂ emission amount, a configuration that does not include the evaluation value switching unit 39 from the energy saving evaluation plant simulation device 10 shown in FIG. .

DESCRIPTION OF SYMBOLS 10 Energy-saving evaluation plant simulation apparatus 11 Simulator operation means 12 Simulator calculation means 13 Energy-saving parameter display operation means 15 Control panel 16 Dialogue display apparatus 21 Simulator input / output part 22 Control system calculation part 23 Dynamic characteristic calculation part 24 Energy-saving calculation part 25 Recording part 31 Energy saving regeneration data switching section 35 Energy saving parameter calculation section 36 Energy saving parameter integration section 37 Loss calculation section 38 Energy saving operation evaluation value comparison section 39 Evaluation value switching section 40 Energy saving parameter conversion section 45 Plant operation record 46 Energy saving operation record 47 Energy saving parameter history 48 Loss Calculation result history 49 Energy saving evaluation parameter 51 Parameter display / dialogue device

Claims (5)

Simulator operating means for receiving input operations when executing plant control and monitoring simulations;
Simulation means for simulating plant control and monitoring for evaluating energy savings,
An energy saving evaluation means for evaluating the operation status of the plant to be simulated based on energy saving parameters set in advance from the energy saving aspect;
A storage means for storing the simulation result of the simulation means and the result of the evaluation of the energy saving evaluation means in association with the identification information corresponding to each operation pattern to be simulated, the plant condition and the energy saving parameter in the operation pattern, and
A display operation means for presenting a result of simulation performed by the simulation means and a result evaluated by the energy saving evaluation means;
The energy saving evaluation means includes an energy saving parameter calculation unit that obtains each energy saving parameter from the process quantity obtained as a result of simulation by the simulation means, based on mathematical formula information that defines a relationship between a plant process quantity and the energy saving parameter; ,
An energy saving parameter integrating unit that integrates the energy saving parameter calculated by the energy saving parameter calculating unit for each energy saving parameter for a predetermined time;
An energy-saving evaluation plant simulation device comprising: 2. The energy saving evaluation plant simulation apparatus according to claim 1, wherein the energy saving evaluation unit includes a loss calculation unit that calculates a physical quantity that could not be generated at the time of abnormality as a loss. Energy saving regeneration data switching means for specifying one operation pattern from a plurality of reproducible operation patterns based on the selection command input from the simulation operation means and switching the operation pattern to be reproduced to the specified operation pattern is provided. The energy-saving evaluation plant simulation device according to claim 1 or 2. The energy saving evaluation unit executes a current simulation and executes a past simulation selected as a comparison partner with reference to the evaluation value of the energy saving parameter to be compared with the energy saving parameter recorded in the storage unit and the storage unit It is used when the energy-saving operation evaluation value comparison unit that compares the two evaluation values acquired and the energy-saving operation evaluation value comparison unit that obtains the evaluation value of the parameter to be compared that is saved at times is compared. An evaluation value switching unit that switches the energy-saving parameter to one energy-saving parameter specified based on an input operation received by the simulator operating means from a plurality of energy-saving parameters set in advance. Item 4. The energy-saving evaluation plant simulation device according to any one of Items 1 to 3. Simulator operation means for accepting input operations when executing simulation of plant control and monitoring, simulation means for simulating plant control and monitoring for evaluating energy saving, and simulation targets based on preset energy saving parameters An energy saving evaluation means for evaluating the operation status of the plant being operated and a display operation means for presenting the result of simulation and evaluation by the simulator computing means, and using the energy saving evaluation plant simulation device, Is a way to evaluate,
The energy saving evaluation means obtains each energy saving parameter from the process quantity obtained as a result of simulation of the simulation means based on mathematical formula information defining the relationship between the simulated plant process quantity and the energy saving parameter;
The energy saving evaluation means integrates the obtained energy saving parameters for each predetermined time energy saving parameters;
The energy saving evaluation means displays the integration result for each obtained energy saving parameter on the display operation means,
An energy saving evaluation method characterized by comprising:

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