JP2013177860A - Operation support device of power generation facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To visually check the state of equipment according to an operation schedule of a power generation facility.
[Solution]
The visualization control means 13 displays the state of combustion vibration of the combustor on the monitor 12 according to the state of change of the output of the gas turbine over time, and visually confirms the state of the combustor according to the operation schedule of the power generation equipment. It becomes possible.
[Selection] Figure 3

Description

  The present invention relates to an operation support apparatus for a power generation facility, which can check the status of equipment according to the power generation facility.

  A power generation facility constructed as a thermal power plant includes various components such as a gas turbine including a compressor, a combustor, and a turbine, and a heat exchanger. Depending on the construction purpose and operation method of the thermal power plant, the operating conditions may differ even if the same power generation equipment is provided, and the influence between equipment differs depending on the difference in the components and the fuel composition of the combustor. ing. Furthermore, the influence on the equipment varies depending on the seasons with different atmospheric temperatures and the construction sites of thermal power plants.

  At thermal power plants, the operation of equipment has been stopped by periodic inspections of power generation facilities, etc., and restarted after inspections have been completed. Although the adjustment operation of the device is performed at the time of re-operation, the operation range with a margin for the device capability is confirmed based on the specification of the device. In addition to the specifications of the equipment, by taking into account the characteristics of each power generation facility and past operation data, it is possible to perform operations that make the most of the capabilities of the equipment.

  Under such circumstances, as a technique for clarifying an index of device reliability, a technique for analyzing and examining information relating to a failure state that occurs is known (see Patent Document 1). The technology of Patent Document 1 can create data suitable for statistical processing from a large number of data, but requires complicated arithmetic processing, so that prediction and avoidance of problems that occur and the status of equipment can be confirmed. It is not.

  If it becomes possible to visually check the status of the equipment according to the operation schedule of the power generation equipment, the equipment specifications and the characteristics of each power generation equipment and past operation data are taken into account. Adjustments that make the most of the ability can be made and efficient operation can be performed.

JP 2007-2673 A

  This invention is made | formed in view of the said condition, and it aims at providing the driving assistance device of the power generation equipment which can confirm the condition of an apparatus visually according to the driving schedule of a power generation equipment.

  In order to achieve the above object, an operation support apparatus for a power generation facility according to claim 1 of the present invention displays a schedule of output of the power generation facility and displays time-dependent information of device parameters in accordance with the schedule of output. Means for storing state information of the device based on time-dependent information of the parameters of the device, and means for displaying the state information of the device stored in the storage means according to the time-based information of the parameters of the device And a visualization control means for displaying on the screen.

  In the present invention according to claim 1, since the status information of the device is displayed on the display means according to the time-lapse information of the parameters of the device by the visualization control means, the status information of the equipment can be displayed according to the output schedule. it can. Thereby, according to the driving | operation schedule of power generation equipment, it becomes possible to confirm the condition of an apparatus visually.

  The output schedule of the power generation facility can correspond to an operation schedule for gradually changing the load state to the rated load state, or an operation schedule for suddenly increasing or decreasing the load state.

  A power generation facility operation support apparatus according to a second aspect of the present invention is the power generation facility operation support apparatus according to the first aspect, wherein the power generation facility combusts the compressed fluid and fuel from the compressor. And a gas turbine for obtaining power by expanding the combustion gas from the combustor, wherein the device is the combustor, and further, the air flow rate of the combustor from the time-lapse information stored in the storage means A calculation means for calculating a fuel flow rate and a flame temperature; and the combustor based on the time information stored in the storage means, the state information of the combustor calculated by the calculation means, and the past time information. Analyzing means for analyzing an operating state of the power generation facility, wherein the visualization control means causes the display means to display information obtained by at least one of the calculation means and the analysis means. And butterflies.

  According to the second aspect of the present invention, the state of the combustor parameters and the past state of the combustor parameters can be displayed on the display means and visually confirmed according to the operation schedule.

  According to a third aspect of the present invention, there is provided the operation support apparatus for power generation equipment according to the second aspect, wherein the analysis means stores state information of the combustor stored in the storage means. From a function of analyzing and predicting the operating state and aging characteristics of the combustor and the power generation equipment according to the output schedule of the power generation equipment, and according to the schedule, the aging characteristics of the state information of the combustor It is characterized by displaying in advance.

  According to the third aspect of the present invention, the operating state of the power generation facility and the aging characteristics of the combustor can be displayed on the display means and visually confirmed according to the operation schedule.

  According to a fourth aspect of the present invention, there is provided the power generation facility operation support apparatus according to the third aspect, wherein the analysis means includes the combustor and the power generation facility that have been analyzed and predicted. It has the function of comparing the operating state and aging characteristics and the past operating state and aging characteristics of the combustor and the power generation equipment, and the comparison results are used to analyze and predict the operating state and aging characteristics of the combustor and the power generation equipment. It is characterized by being reflected in.

  In the present invention according to claim 4, the operating state of the combustor and the power generation equipment and the past state of the aging characteristics can be compared and reflected in the analysis / prediction.

  In the power generation facility operation support apparatus of the present invention, the compared analysis / prediction results are fed back to the analysis means. In addition, the analysis means predicts the characteristics of the combustor, such as pressure fluctuation, and calculates the combustor parameters so that safe operation is performed when the predicted characteristics, such as the pressure fluctuation value, exceed a threshold. It is possible to provide a function of avoiding the pressure fluctuation value of the vessel from exceeding the threshold value.

  According to a fifth aspect of the present invention, there is provided the operation support apparatus for power generation equipment according to the present invention, wherein the time-dependent information of the parameters of the combustor is the power generation equipment operation support apparatus according to any one of claims 2 to 4. The secondary air is supplied from other than the burner section.

  In this invention which concerns on Claim 5, the state of the combustor based on the introduction state of the secondary air supplied from other than a burner part can be displayed.

  A power generation facility operation support apparatus according to a sixth aspect of the present invention is the power generation facility operation support apparatus according to any one of the second to fourth aspects, wherein the combustor includes a plurality of burners. The time-lapse information of the parameters of the combustor includes the introduction state of the fuel supplied from the first burner mainly for flame holding and the introduction of the fuel supplied from the second burner that controls the main combustion of the combustor. State, introduction state of the fuel supplied from the third burner mainly aimed at reheating, introduction state of the fuel supplied from the fourth burner mainly aimed at suppressing combustion vibration, the first burner and the second burner Alternatively, it includes any state of introducing air into the third or fourth burner.

  In the present invention according to claim 6, a first burner (referred to as a pre-burner, a pilot burner, etc.), a second burner (referred to as a main burner, etc.), and additional cooking and suppression of combustion vibrations are the main purposes. The state of the combustor based on the state of introduction of fuel supplied from the third burner, the fourth burner, and the state of introduction of air into each burner can be displayed.

  According to a seventh aspect of the present invention, there is provided a power generation facility operation support apparatus according to the present invention, wherein the state information is the combustor for the load of the gas turbine. It contains the information of the fluctuation of pressure.

  In this invention which concerns on Claim 7, the information of the fluctuation | variation of the pressure of the combustor with respect to the load of a gas turbine, ie, the information of the combustion vibration according to the output of a power generation facility, can be displayed.

  According to an eighth aspect of the present invention, there is provided the operation support apparatus for a power generation facility according to the present invention, wherein the information on the fluctuation in the pressure of the combustor relative to the load of the gas turbine is a pressure The variation frequency is divided into frequency bands of a plurality of regions.

  In the present invention according to claim 8, pressure fluctuations (vibrations) can be displayed as combustion vibrations in a state of being divided into a plurality of frequency bands.

  The power generation facility operation support apparatus according to the present invention can visually check the state of the device according to the operation schedule of the power generation facility.

It is a schematic system diagram of the power generation equipment to which the driving support device of the present invention is applied. It is sectional drawing of a gas turbine system. It is a functional block block diagram of a driving assistance device. FIG. 5 is a relationship diagram between a pressure fluctuation frequency and a pressure fluctuation value. It is a graph showing the operation schedule of a gas turbine. It is a graph showing the operation schedule of a gas turbine. It is a graph showing the operation schedule of a gas turbine. It is a graph showing the operation schedule of a gas turbine. It is a graph showing the relationship between the load of a gas turbine and the pressure fluctuation of a combustor. It is a graph showing the intensity distribution of pressure. It is a graph showing the relationship between the load of a gas turbine and the pressure fluctuation of a combustor. It is a graph showing the relationship between the load of a gas turbine and the pressure fluctuation of a combustor. It is a graph showing the relationship between the load of a gas turbine and the pressure fluctuation of a combustor. It is a graph showing the relationship between a fluctuation | variation frequency band and the load of a gas turbine. It is a graph showing the condition of the pressure fluctuation of a combustor. It is a conceptual diagram of the arrangement | positioning condition of a combustor. It is a graph showing the intensity distribution of pressure.

  An outline of the power generation facility and the operation support apparatus for the power generation facility will be described with reference to FIG.

  1 is a schematic system of power generation equipment to which the operation support apparatus of the present invention is applied, FIG. 2 is a cross-sectional view of a gas turbine system, FIG. 3 is a functional block configuration of the operation support apparatus, and FIG. The relationship between frequency and pressure fluctuation value is shown.

  As shown in FIG. 1, a turbine facility 1 of a power generation facility includes a compressor 2 and a gas turbine 3, and compressed air HAir and fuel gas f compressed by the compressor 2 are sent to a combustor 4. In the combustor 4, the fuel gas f is combusted, the combustion gas E is sent to the gas turbine 3 and expanded, and power is generated by the generator G.

  The exhaust gas from the gas turbine 3 is recovered by the exhaust heat recovery boiler 5, purified by the exhaust gas processing device, and then discharged from the chimney 6 to the atmosphere. The exhaust heat recovery boiler 5 is supplied with condensate FW obtained by condensing the exhaust steam ST of the steam turbine 7 in the condenser 8, and the exhaust heat recovery boiler 5 generates steam by the exhaust gas of the gas turbine 3. The steam generated in the exhaust heat recovery boiler 5 is expanded by a steam turbine to obtain power generation power.

  As shown in FIG. 2 (a), a combustor 4 is provided between the outlet of the compressor 2 of the turbine equipment 1 and the inlet of the gas turbine 3, and the combustor 4 includes a fluid isolated from the atmosphere. A passage and a combustion chamber are provided. At least one combustor 4 is provided in the circumferential direction of the turbine facility 1 according to the scale of the facility (for example, 12). The combustor 4 is provided with detection means for detecting pressure, and the pressure during combustion is measured over time and stored. And the fluctuation | variation of a pressure is evaluated as a pressure fluctuation value of a combustor for every frequency.

  As shown in FIG. 2B, the combustor 4 includes a burner 51 although a detailed description is omitted. The burner 51 includes, for example, a first burner mainly intended for flame holding, a second burner responsible for main combustion of the combustor, a third burner mainly intended for reheating, and suppression of combustion vibration A fourth burner for the main purpose is provided.

  In the figure, reference numeral 52 denotes a first burner nozzle that supplies fuel to the first burner. The fuel f1 is supplied from the first burner nozzle 52 to perform first combustion such as diffusion combustion having high flame holding properties. In the figure, reference numeral 53 denotes a second burner nozzle that supplies fuel to the second burner. The fuel f2 is supplied from the second burner nozzle 53 to perform main combustion by premixed combustion.

  The combustor 4 includes a third burner nozzle that supplies fuel to the third burner, and supplies fuel from the third burner nozzle to perform additional cooking combustion. In addition, a fourth burner nozzle that supplies fuel to the fourth burner is provided, and fuel is supplied from the fourth burner nozzle to perform combustion mainly for suppressing combustion vibration. For this reason, the combustor 4 has a structure having special functions other than flame holding and main combustion.

  Further, the combustor 4 has a structure in which the fuel-air ratio in the combustion region is adjusted by controlling the amount of secondary air introduced, and the combustion is adjusted to the optimum combustion according to the gas turbine output, fuel composition, and the like. .

  As parameters of the combustor 4, the supply ratio of the fuel to the first burner nozzle 52 (the ratio of the fuel f1 supplied to the first burner out of the fuel supplied to the combustor 4: f1rate) and the amount of secondary air introduced, The supply ratio of air to the first, second, third and fourth burners, the spray amount of water, steam or gas turbine exhaust gas to the combustor 4 for reducing nitrogen oxide (NOx), etc. . By adjusting f1rate appropriately, the flame holding property is adjusted and the amount of nitrogen oxide (NOx) discharged is suppressed. Further, NOx emission is suppressed by spraying water, water vapor or gas turbine exhaust gas. The adjustment of f1rate and the control of the amount of introduced secondary air are adjusted according to the load (output) of the gas turbine 3 (time-lapse information).

  As shown in FIG. 3, the integrated control room 11 for operating the power generation facility is provided with a monitor 12 as a display means. The monitor 12 displays the load (output) schedule of the gas turbine 3 and f1rate, which is the time-lapse information of the parameters of the combustor 4, and the time-lapse information of the introduction amount of the secondary air according to the schedule.

  On the other hand, the combustor 4 is provided with detection means for detecting the pressure during the flow of the combustion gas, and the pressure during combustion (combustion vibration) is measured over time. The pressure fluctuation is evaluated as a pressure fluctuation value of the combustor 4 for each frequency. FIG. 4 shows the relationship between the pressure fluctuation frequency and the pressure fluctuation value. As shown in FIG. 4, the frequency of the pressure fluctuation is divided into, for example, a region of 11 frequency bands from region (frequency band) A to region K.

  The information shown in FIG. 4 is accumulated (stored) in the storage unit 14 (FIG. 3) as information on the state of the combustor 4 (equipment state information). The storage means 14 stores all state information such as the temperature information of the combustor 4 in addition to the pressure information during combustion.

  As shown in FIG. 3, the calculation unit 15 calculates the air flow rate, the fuel flow rate, and the flame temperature of the combustor 4 from the time-lapse information stored in the storage unit 14. Analyzing means 16 is provided for analyzing the operating state of the power generation equipment including the combustor 4 based on the time-dependent information stored in the storage means 14, the state information of the combustor 4 calculated by the calculating means 15, and the past time-lapse information. ing.

  Although details will be described later, pressure (vibration) and temperature information of the combustor 4 is arbitrarily selected by the visualization control means 13, that is, information obtained by at least one of the calculation means 15 and the analysis means 16 is selected. The information of the state of the combustor 4 is displayed on the monitor 12 together with the schedule of the load (output) of the gas turbine 3.

  Further, the analysis unit 16 analyzes and predicts the operation state and aging characteristics of the combustor 4 and the power generation facility according to the schedule of the output of the power generation facility from the state information of the combustor 4 stored in the storage unit 14. A function 17 is provided, and the aged characteristic of the state information of the combustor 4 is displayed in advance according to the schedule. For this reason, according to the operation schedule, the operation state of the power generation facility and the aging characteristics of the combustor 4 can be displayed on the monitor 12 and visually confirmed.

  Further, the analysis means 16 has a comparison function for comparing the operation state and aging characteristics of the combustor 4 and the power generation equipment analyzed and predicted by the analysis prediction function 17 with the past operation state and aging characteristics of the combustor 4 and the power generation equipment. The comparison result is reflected in the analysis / prediction of the operating state and aging characteristics of the combustor 4 and the power generation equipment. For this reason, the operating state of the combustor 4 and the power generation equipment and the past state of the aging characteristics can be compared and reflected in the analysis / prediction.

  In the power generation facility operation support apparatus described above, the compared analysis / prediction results are fed back to the analysis means 16. The analysis means 16 also predicts the characteristics of the combustor 4 such as pressure fluctuations, and calculates the parameters of the combustor 4 so as to perform safe operation when the predicted characteristics such as pressure fluctuation values exceed a threshold value. In addition, it is possible to provide a function of avoiding the pressure fluctuation value of the combustor 4 from exceeding the threshold value.

  An example of how to display the state of the combustor 4 in accordance with the load schedule of the gas turbine 3 will be described with reference to FIGS.

  FIG. 5 shows a state in which the temperature state of the combustor corresponding to the operation schedule for gradually setting the load of the gas turbine to the rated load state is displayed.

  As shown in FIG. 5, the load of the gas turbine 3 (thick solid line) is set to be higher step by step with the passage of time, and the operation of each device is adjusted to finally reach the rated load. When the load of the gas turbine 3 is increased, the fuel ratio f1rate (thin solid line) to the combustion portion having a higher flame holding property of the first burner is lowered under the condition that the load is constant at each gas turbine load. The ratio of the premixed combustion fuel from the second burner that controls the main combustion is increased, or the ratio of the diffusion combustion fuel from the first burner is increased by increasing the f1 rate ratio. Similarly, the amount of secondary air is increased (dotted line) to increase the amount of air on the outlet side of the combustor 4.

  While increasing the gas turbine load according to the schedule indicated by the thick solid line in FIG. 5, f1rate is adjusted under the condition of being constant at each gas turbine load, and the state of the gas turbine at each f1rate is confirmed. Similarly, the amount of secondary air is adjusted, and the state of the gas turbine at each secondary air supply rate is confirmed. In order to confirm the tolerance in the adjustment range and the state of the gas turbine, the temperature state of the combustor 4 corresponding to the operation schedule is displayed.

  The temperature of the combustor 4 includes, for example, the combustion gas temperature Tp of the flame holding section that is the first burner, the combustion gas temperature Tm of the second burner section that controls the main combustion, and the combustion gas temperature Tb at the outlet of the combustor 4. Is displayed. The display can be displayed at an arbitrary place such as a schedule transition indicated by a thick solid line. By confirming the temperature state of the combustor 4, it is possible to visually confirm the marginal state of adjustment of f1rate and to visually confirm the state change due to the adjustment of the secondary air amount.

  For example, during a test operation after completion of periodic inspection, based on the temperature conditions of each part of the combustor 4, there are margins for adjusting f1rate (fuel distribution status, etc.), margins for supplying secondary air, etc. By confirming (such as the open / closed state of the air supply passage), adjustment and operation can be performed with maximum margin based on these data. As a result, the combustor 4, the compressor 2, the gas turbine 3, etc. can be used in consideration of the specifications of the combustor 4, the influence of the actual operation of the power generation equipment (the influence of the season, etc.), and past operation data. It is possible to perform adjustment operation that makes the best use of the ability.

  Moreover, since the data of the adjustment operation of combustion is displayed on the monitor 12, the test operation related to the temperature condition of the combustor 4 can be performed by printing out the screen data of the monitor 12 at the required time to a printout or a file. A printed out document can be used as the report.

  6 and 7 show a state in which the pressure state of the combustor 4 (the state of each frequency band of pressure fluctuation) according to the operation schedule for gradually setting the load of the gas turbine 3 to the rated load state is shown. FIG. 6 shows a partial load situation, and FIG. 7 shows a rated load situation.

  Similar to the situation of the schedule shown in FIG. 5, f1rate is adjusted while increasing the gas turbine load according to the schedule shown by the thick solid line, and the state change due to the adjustment of f1rate is confirmed. Similarly, the amount of secondary air is adjusted, and the state of the gas turbine 3 at each secondary air supply rate is confirmed. In order to confirm the state of margin for adjustment, the pressure state of the combustor 4 corresponding to the operation schedule is displayed. In particular, FIG. 6 and FIG. 7 show examples of situations in frequency band A, frequency band B, and frequency band C.

  As shown in FIG. 6, the state of the pressure fluctuation in each frequency band is specifically displayed in accordance with the state of adjustment of f1rate in the partial load operation region and the state of supply of secondary air. Moreover, as shown in FIG. 7, the state in each frequency band of the pressure fluctuation is specifically displayed in accordance with the state of adjusting the f1 rate in the operating range of the rated load and the state of supplying the secondary air. It should be noted that the situation shown in FIGS. 6 and 7 can be shown by one display.

  By checking the state of the pressure fluctuation of the combustor 4 in each frequency band, it is possible to visually check the margin of adjustment of the f1rate according to the combustion vibration of the combustor 4 and supply each secondary air. The state of the gas turbine 3 in the ratio can be visually confirmed.

  For example, during a test operation after completion of periodic inspection, based on the state of combustion vibration of the combustor 4, the f1 rate adjustment allowance state (fuel distribution state, etc.) and the secondary air supply allowance state are determined. By checking, it is possible to make adjustments and operations with maximum margin based on these data. As a result, the combustor 4, the compressor 2, the gas turbine 3, etc. can be used in consideration of the specifications of the combustor 4, the influence of the actual operation of the power generation equipment (the influence of the season, etc.), and past operation data. It is possible to perform adjustment operation that makes the best use of the ability.

  In addition, since the data of the combustion adjustment operation is displayed on the monitor 12, the screen data of the monitor 12 at the required time is printed out or output to a file, so that a test related to the state of combustion vibration of the combustor 4 is performed. Printed documents can be used as driving reports.

  FIG. 8 shows the change over time in the gas turbine load and the exhaust gas temperature (Tex) when the load of the gas turbine 3 is suddenly increased and decreased, and the change in the pressure fluctuation of the combustor 4 at any time (in each frequency band). The state of the pressure change state change) is shown over time.

  When the load of the gas turbine 3 is rapidly increased and decreased, the load of the gas turbine 3 changes as indicated by the solid line in the figure, and the exhaust gas temperature is indicated by the dotted line in accordance with the fluctuation of the load of the gas turbine 3. To change. The state of each frequency band of the pressure fluctuation of the combustor 4 is specifically displayed according to the fluctuation of the load of the gas turbine 3.

  In the case of pressure fluctuation values and graphs (Fig. 4), by displaying matters to which special attention should be paid to changes in the pressure fluctuation state and state of the combustor 4 during operation in which the load of the gas turbine 3 is rapidly changed. Compared to the above, it is possible to easily confirm and grasp the change of the situation visually.

  A specific method for expressing the state of pressure fluctuation of the combustor 4 will be described based on FIGS. 9 and 10.

  FIG. 9 shows the relationship between the output of the gas turbine 3 and the maximum value of the pressure fluctuation of the combustor 4 using the frequency band as a parameter. In FIG. 9, for example, the frequency is divided into a frequency band region A to a region K region (see FIG. 4), and the maximum pressure fluctuation values in the regions A, B, C, G, and H are plotted. FIG. 10 shows an isobaric diagram of the maximum value of the pressure fluctuation of the combustor 4 in the frequency band region A to region I with respect to the output of the gas turbine 3.

  As shown in FIG. 9, the region B (solid line Δ mark), region C (solid line □ mark), region G (solid line ■ mark), region H ( The maximum pressure fluctuation value at the solid line ▼) is displayed according to the load of the gas turbine 3.

  Further, as shown in FIG. 10, the equal pressure distribution of the maximum pressure fluctuation value is displayed in shades (colored) according to the division from the frequency band region A to region I. For example, it can be visually observed that strong combustion vibration is generated in the frequency band of a dark color range in accordance with the load increase of the gas turbine 3.

  With the characteristics of FIGS. 9 and 10, it is possible to grasp the state of pressure fluctuation for each frequency band region according to the load of the gas turbine 3. The grasped situation is displayed according to the driving schedule as shown in FIGS. 6 to 8, for example. 9 and 10 are displayed on the monitor 12 as they are.

  The characteristics shown in FIGS. 9 and 10 are recorded in the storage means 14 as past data for each season, every month, etc., and as reference data based on initial performance at the time of manufacture of the device. Data necessary for monitoring and comparison during normal operation is selected by the visualization control means 13.

  An example of data representing the state of pressure fluctuation (combustion vibration) and a display example of the combustor 4 will be described with reference to FIGS. The facility can be operated while easily grasping the state of combustion vibration displayed on the basis of these data.

  11 to 13 show the state of the maximum value of the pressure fluctuation when the state of adjustment of the ratio f1rate of the fuel supplied to the first burner and the state of introduction of the secondary air are changed according to the load of the gas turbine 3. 11 shows a case where the frequency band of the pressure fluctuation frequency of the combustor 4 is in the region A, FIG. 12 shows a case where the frequency band of the frequency of the pressure fluctuation of the combustor 4 is the region C, and FIG. This is a case where the frequency band of the pressure fluctuation frequency 4 is the region E.

  In the graph of the figure, □ indicates a reference state, ○ indicates a state where f1rate is lowered, Δ indicates a state where f1rate is increased, and ◇ indicates a state where the amount of secondary air introduced is increased. As shown in FIGS. 11 to 13, by adjusting the f1 rate and adjusting the amount of secondary air introduced, changes in pressure fluctuations (changes in combustion vibrations) for each frequency band (regions A, C, and E). ) Can be grasped according to the load of the gas turbine 3. For example, in the frequency band of region E, by introducing secondary air, the load of the gas turbine 3 can be increased while suppressing pressure fluctuation.

  The situation shown in FIGS. 11 to 13 is recorded in the storage means 14 as past data for each season, every month, etc., and as reference data based on initial performance at the time of manufacturing the device, and during test operation after periodic inspection. The necessary data is selected by the visualization control means 13 for monitoring and comparison during normal operation. Moreover, the data of the situation of FIGS. 11 to 13 can be displayed on the monitor 12 as necessary.

  FIG. 14 shows the state of the frequency value when the pressure fluctuation value becomes maximum according to the load of the gas turbine 3, FIG. 14 (a) is the region H, FIG. 14 (b) is the region G, FIG. 14C shows the situation of the region D.

  The frequency situation shown in FIG. 14 has a different tendency in each frequency band, and the influence on each other's area can be confirmed. For example, in the region H of FIG. 14A, the dominant frequency tends to decrease according to the gas turbine load, and in the region G of FIG. 14B, it tends to increase. Moreover, the mutual influence of a frequency band can also be confirmed. For example, the frequency value of the region G sandwiched between the region H and the region D of the frequency band approaches the region D of the frequency band at a low load of the gas turbine, and changes to the region H of the frequency band as the gas turbine load increases. You can see how it changes as you approach.

  The situation of FIG. 14 is recorded in the storage means 14 as past data for each season, every month, etc., and as reference data based on initial performance at the time of manufacturing the device, and during test operation after regular inspection and normal operation Necessary data is selected by the visualization control means 13 for time monitoring and comparison. Further, the status data of FIG. 14 can be displayed on the monitor 12 as necessary.

  FIG. 15 shows the combustor numbers indicating the maximum values of the combustion vibrations of the 12 combustors 4 with respect to the load of the gas turbine 3. That is, region A (solid line ◯), region B (solid line △), region C (solid line □), region D (solid line ▽), region E (solid line ●), which are the frequency bands of combustion vibration, In F (solid line ▲), region G (solid line ■ mark), region H (solid line ▼ mark) and region I (solid line ◇ mark) It is shown.

  Based on the information in FIG. 15, the interrelationship of the combustor 4 having the maximum pressure fluctuation value in each frequency band can be grasped according to the output of the gas turbine.

  16 shows the concept of the arrangement state of the combustor 4, that is, the concept of the arrangement state of the combustor 4 as viewed from the axial direction of FIG. 2, and FIG. The combustor numbers indicating the maximum value of the pressure fluctuation of the combustor 4 are divided into four groups and shown in a map form on the gas turbine load-frequency band diagram.

  Based on the information in FIG. 17, the group of combustor numbers indicating the maximum pressure fluctuation value can be grasped by shading (color coding) according to the division from the frequency band region A to region I. For example, depending on the load of the gas turbine 3, it can be visually observed that strong combustion vibrations in the frequency bands of the regions D and G are generated in the darker combustor group.

  The situation shown in FIGS. 15 and 17 is recorded in the storage means 14 as past data for each season, every month, etc., and as reference data based on initial performance at the time of manufacture of the device, and during test operation after periodic inspection. The necessary data is selected by the visualization control means 13 for monitoring and comparison during normal operation. Further, the status data of FIG. 14 can be displayed on the monitor 12 as necessary.

  The power generation facility operation support device described above is related to the operation of the gas turbine power plant, and visualizes and displays the actual plant state in which pressure fluctuations typified by combustion vibration are amplified by various factors, thereby displaying the plant. It is intended to support driving. In particular, by recording plant abnormalities and malfunctions over time and displaying them together with aging characteristics, it is possible to detect and grasp malfunctions and the like early during normal operation and take countermeasures. In addition, since the accuracy of the parts repair plan at the next periodic inspection can be improved, the periodic inspection period can be shortened and the repair cost can be reduced, and the plant operating rate can be increased, resulting in cost reduction effects. Is big. Moreover, it is applicable not only to a gas turbine power plant but also to monitoring of a steam power plant, a nuclear power plant, a gas turbine engine, an automobile engine, etc., and can handle general equipment with pressure fluctuations.

  INDUSTRIAL APPLICABILITY The present invention can be used in the industrial field of power generation facility operation support devices.

DESCRIPTION OF SYMBOLS 1 Turbine equipment 2 Compressor 3 Gas turbine 4 Combustor 5 Exhaust heat recovery boiler 6 Chimney 7 Steam turbine 8 Condenser 11 Integrated control room 12 Monitor 13 Visualization control means 14 Storage means 15 Calculation means 16 Analysis means 17 Analysis prediction function 18 Comparison function 51 Burner 52 First burner nozzle 53 Second burner nozzle
HAir Compressed air f Total fuel supplied to gas turbine combustor f1 Fuel supplied to first burner (referred to as preburner, pilot burner, etc.) f2 Fuel supplied to second burner (referred to as main burner etc.) f1rate Combustion The ratio of f1 in the fuel supplied to the combustor Tex Gas turbine exhaust gas temperature Tp Combustion temperature of the first burner (referred to as preburner, pilot burner, etc.) Tm Main burner part (mainly the second burner part) of the gas turbine combustor Combustion temperature of the burner section (called the main burner) Tb Outlet gas temperature of the gas turbine combustor E Combustion gas discharged from the combustor

Claims (8)

Display means for displaying the output schedule of the power generation facility, and displaying the time-dependent information of the parameters of the device according to the output schedule;
Storage means for storing status information of the device based on time-dependent information of the parameters of the device;
A power generation facility operation support apparatus, comprising: visualization control means for causing the display means to display status information of the equipment stored in the storage means in accordance with time-dependent information of the parameters of the equipment. In the power generation equipment operation support device according to claim 1,
The power generation facility is:
A combustor that combusts the compressed fluid and fuel from the compressor, and a gas turbine that obtains power by expanding the combustion gas from the combustor,
The device is the combustor;
Furthermore,
Calculating means for calculating the air flow rate, fuel flow rate and flame temperature of the combustor from the time-lapse information stored in the storage means;
Analysis means for analyzing the operating state of the power generation equipment including the combustor based on the time-lapse information stored in the storage means, state information of the combustor calculated by the calculation means, and past time-lapse information. Prepared,
The visualization control means includes
The information obtained by at least one of the said calculation means and the said analysis means is displayed on the said display means. The driving | operation assistance apparatus of the power generation equipment characterized by the above-mentioned. In the power generation equipment operation support device according to claim 2,
The analysis means includes
A function of analyzing and predicting the operating state and aging characteristics of the combustor and the power generation facility according to the output schedule of the power generation facility from the state information of the combustor stored in the storage means,
According to the schedule, an aged characteristic of state information of the combustor is displayed in advance. In the power generation equipment operation support device according to claim 3,
The analysis means includes
The operation state of the combustor and the power generation equipment that has been analyzed and predicted, the aging characteristics, and the past operation state of the combustor and the power generation equipment, a function that compares the aging characteristics,
The comparison result is reflected in the analysis and prediction of the operating state and aging characteristics of the combustor and the power generation facility. In the driving assistance device of the power generation facility according to any one of claims 2 to 4,
The time-lapse information of the combustor parameters is
An operation support apparatus for power generation equipment, characterized in that secondary air supplied from other than the burner section is introduced. In the driving assistance device of the power generation facility according to any one of claims 2 to 4,
The combustor has a plurality of burners;
The time-lapse information of the combustor parameters is
The introduction state of the fuel supplied from the first burner for the main purpose of flame holding, the introduction state of the fuel supplied from the second burner for controlling the main combustion of the combustor, and the third purpose for the purpose of replenishment The introduction state of the fuel supplied from the burner, the introduction state of the fuel supplied from the fourth burner whose main purpose is to suppress the combustion vibration, the air to the first burner and the second, third or fourth burner An operation support device for a power generation facility characterized by including any of the introduced states. In the operation support apparatus of the power generation facility according to claim 5 or claim 6,
The state information is
Information on fluctuations in pressure of the combustor with respect to the load of the gas turbine is included. The operation support apparatus for a power generation facility according to claim 7,
The information of the fluctuation of the pressure of the combustor with respect to the load of the gas turbine is
An operation support device for a power generation facility, characterized in that the frequency of pressure fluctuation is divided into a plurality of frequency bands.

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