JP2002323922A - Power plant maintenance support system - Google Patents

Abstract

(57) [Summary] [Problem] A maintenance support system for a power generation facility capable of quantitatively calculating a device replacement time and a power generation cost and using the calculation result to determine a device replacement time in relation to the power generation cost. I will provide a. SOLUTION: One or more power generation facilities 5, a power generation company 1 having the same, and a service center 2 are connected to a communication network 4.
The service center 2 periodically acquires plant data from various devices constituting one or more power generation facilities 5 through the communication network 4 and obtains plant data from various devices constituting the power generation facilities 5. Based on the data, when the performance deterioration of the equipment diagnosed as the performance deterioration of the various equipment is detected, the power generation equipment including the increase in the power generation cost of the power generation equipment caused by the performance deterioration of the equipment and the replacement cost of the equipment. Is calculated quantitatively, and the equipment maintenance information including the calculation result is notified to the power generation company 1 having the equipment through the communication network 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a maintenance support system for a power generation facility, and more particularly, to a service center which connects various devices constituting the power generation facility to a service center, and the service center constantly reduces the performance of various devices. The present invention relates to a power generation facility maintenance support system that monitors and detects, when a performance degradation of a certain device is detected, device maintenance information indicating various advantages and disadvantages based on the performance degradation of the device to a power generation company that owns the device.

[0002]

2. Description of the Related Art Generally, power generation equipment is composed of a combination of various devices, and some of these devices have deteriorated performance due to aging or failure. In particular, the gas turbine, which is one of the main devices among the various devices that make up the power generation facility, causes an increase in the fuel flow required to generate power when its performance is reduced for any reason. Increases fuel costs, resulting in increased power generation costs,
Eventually, the business situation of the power generation company will be adversely affected. From such a point, it is one of important tasks of the power generation company to constantly monitor the performance of various devices constituting the power generation equipment such as the gas turbine.

As a method of measuring the performance of a gas turbine, there is a method of calculating the power generation cost by calculating the fuel cost consumed per unit power generation. According to this method, by observing the transition of the power generation cost of the gas turbine, it is possible to intuitively grasp the increase in the power generation cost caused by the performance deterioration of the gas turbine. Power generation companies usually record daily power generation and the amount of fuel consumed in a driving logbook. For this reason,
In order to determine the power generation cost, it is necessary to calculate the total fuel cost using the amount of fuel consumed and the acquisition price of the fuel, and to calculate the total fuel cost by dividing the calculated total fuel cost by the daily power generation amount. it can.

[0004] The power generation cost of the power generation equipment is almost constant in a steady state. However, if the power generation cost changes over time or the performance of any device deteriorates for some reason, the power generation cost will be reduced. Tends to increase. When the power generation cost increases beyond an allowable range, the operation of the power generation equipment is stopped, and repair work such as replacement of a device that has changed over time or a device that has deteriorated in performance is performed. The determination as to whether or not to perform this repair work is made by the repair section of the power generation company in many cases because the operation of the power generation equipment is stopped.

[0005]

The power generation cost of the power generation equipment is not only increased due to troubles occurring on the equipment side such as aging of the equipment and deterioration of the performance of the equipment, but also changes in the properties of the fuel used or the surrounding environment. , For example, changes in external conditions such as temperature changes, pressure fluctuations, and humidity changes. For this reason, when the power generation cost of the power generation equipment increases, the power generation company may determine whether the increase is due to factors that have occurred on the equipment side, such as aging or performance degradation, or changes in the fuel properties, It is necessary to determine whether the change is due to a change in external conditions such as a change in environment. At the same time, the power generation company should not carry out repair work when equipment aging or slight deterioration of equipment performance appears, taking into account the fact that the shutdown of power generation equipment will cause a large economic loss. When it is not realistic and the degree of aging or performance degradation of the equipment has been determined, it must be determined whether to perform the repair work. In addition, even when the power generation company carries out the repair work, the content of the repair, for example, whether the device should be replaced with a new device of the same type, or a device with higher efficiency than the device It is also necessary to carefully judge whether it is better to do so.

Until now, when replacing any equipment of the power generation equipment, the person in charge of the repair department of the power generation company sets the time to perform the replacement, selects new equipment to be replaced, etc. In many cases, it is not determined in consideration of the power generation cost of the power generation equipment. For this reason, it cannot be guaranteed that the power generation cost of the power generation equipment will necessarily be reduced by replacing the equipment.
From this point, there has been a demand for the development of a method capable of making a decision based on a quantitative index between the time of replacement of equipment and the power generation cost.

The present invention has been made in view of such technical background, and an object of the present invention is to quantitatively calculate a replacement time of a device and a power generation cost, and use the calculation result to determine a replacement time of the device. It is an object of the present invention to provide a power generation facility maintenance support system that can determine the power generation cost in relation to the power generation cost.

[0008]

In order to achieve the above object, a maintenance support system for a power generation facility according to the present invention comprises a service center common to one or more power generation facilities and a power generation company having the power generation facilities. Are connected and arranged via a communication network, and the service center periodically acquires plant data from each of various devices constituting one or more power generation facilities through the communication network, and performs various types of operations constituting one or more power generation facilities. Based on the plant data obtained from the equipment, when the performance deterioration of the equipment is diagnosed and the performance deterioration of the equipment is detected, the increase in the power generation cost of the power generation equipment caused by the performance deterioration of the equipment and the replacement of the equipment Quantitatively calculate the increase in the power generation cost of the power generation equipment including the cost, and store the equipment maintenance information including the calculation result in the communication network. And means for notifying the generation company holding the equipment through.

According to the above means, the service center has one
When constantly acquiring plant data from each of the various devices constituting one or more power generation facilities, diagnosing performance degradation of various devices using the acquired plant data, and detecting a performance degradation of the device based on the diagnosis result, The increase in power generation cost due to a decrease in the performance of the device and the increase in power generation cost when the device is replaced are quantitatively calculated, and device maintenance information including the calculation result is notified to the power generation company that owns the device. Therefore, the power generation company can objectively determine the replacement time of the equipment from the received equipment maintenance information in relation to the power generation cost, and can replace the equipment at the most suitable replacement time.

The equipment maintenance information in the means is
The information includes the change information related to the number of operating days of the power generation equipment, including the replacement cost of the equipment whose performance has deteriorated and the reduction cost due to the replacement of the equipment.

With such a configuration, the power generation company can perceive the replacement time of the equipment to be replaced at a very early stage, so that the replacement power generation equipment can be ordered for new equipment or the power generation equipment can be shut down. Can be executed with sufficient time.

Further, the equipment maintenance information in the above means includes replacement cost information for each manufacturer when replacing the equipment with a deteriorated equipment.

[0013] With this configuration, the power generation company can select the cost of the equipment to be replaced under advantageous conditions while considering the performance of the new equipment and the like.

[0014] In the communication network of the above means, one or more sales companies that sell various kinds of equipment constituting the power generation facilities are connected and arranged, and the power generation company has the performance deterioration of its own company with respect to the selected sales company. The order of the equipment is made through a communication network.

[0015] With this configuration, the power generation company can directly order new equipment through the sales company selected by itself, and thus can obtain equipment to be replaced without much trouble. .

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of a power generation equipment maintenance support system according to an embodiment of the present invention, showing a main part configuration thereof.

As shown in FIG. 1, the maintenance support system for a power generation facility according to this embodiment includes at least a power generation facility 5.
And a repair section 6, a service center 2 for providing equipment maintenance information to the power company 1, and a power generation facility 5
And a communication network 4 such as the Internet. In this case, the power generation facility 5 and the repair section 6, the service center 2, and the equipment maker 3 of the power generation company 1
Are interconnected through a communication network 4 respectively. Note that FIG. 1 illustrates a case where there is one power generation company 1 and one device maker 3.
One or more power generation companies 1 and one or more equipment manufacturers 3 are interconnected through a communication network 4.

Next, FIG. 2 is a block diagram showing a main configuration of the service center 2 shown in FIG. In FIG. 2, the same components as those shown in FIG. 1 are denoted by the same reference numerals.

As shown in FIG. 2, the service center 2 includes a control unit 20, a firewall 21, a process value receiving unit 22, a process value database 23,
From the equipment model database 24, the material information database 25, the efficiency diagnosis unit 26, the life diagnosis unit 27, the design information database 28, the equipment maintenance information transmission unit 29, the cost evaluation unit 30, and the remodeling information database 31 Has become. In this case, the control unit 20 controls the overall operation of the service center 2.

The control unit 20 is connected to a firewall 21, a process value reception unit 22, a process value database 23, an efficiency diagnosis unit 26, a life diagnosis unit 27, and a cost evaluation unit 30, respectively. Firewall 21
Are connected to the process value receiving unit 22 and the equipment maintenance information transmitting unit 29, respectively, and are selectively connected to the communication network 4 not shown in FIG. The process value database 23 is connected to the efficiency diagnosis unit 26 and the life diagnosis unit 27, respectively. The equipment model database 24 is connected to an efficiency diagnosis unit 26, and the material information database 25 is connected to a life diagnosis unit 27. The efficiency diagnosis unit 26 is connected to the design information database 28 and the cost evaluation unit 30, respectively. The life diagnosis unit 27 includes a design information database 28
And the cost evaluation unit 30. The equipment maintenance information transmission unit 29 is connected to the cost evaluation unit 30, and the cost evaluation unit 30 is connected to the remodeling information database 31.

Next, FIG. 3 is a block diagram showing a main configuration of the power generation equipment 5 shown in FIG. In FIG. 3, the same components as those shown in FIG. 1 are denoted by the same reference numerals.

As shown in FIG. 3, the power generation equipment 5 includes a first control device (control device 1) 51, a second control device (control device 2) 52, a first sensor (sensor 1) 53, Second
A sensor (sensor 2) 54, a process value calculation unit 55,
It comprises a process value transmitting section 56 and a firewall 57. In this case, the first control device 51, the second control device 52, the first sensor 53, the second sensor 54,
The component 50 composed of the process value calculation unit 55 is originally
This is a component part 50 included in the power generation equipment 5, in which a process value transmitting unit 56 and a firewall 57 are newly added.

The process value calculating section 55 includes a first control device 51, a second control device 52, and a first sensor 53.
, The second sensor 54, and the process value transmitting unit 56. The firewall 57 is connected to the process value transmitting unit 56 and is selectively connected to the communication network 4 not shown in FIG. Note that the firewall 57 is provided to prevent unauthorized access to the power generation facility 5 from outside since the power generation facility 5 is connected to the communication network 4 such as the Internet, and a dedicated line is used as the communication network 4. In this case, it is not necessary to install the firewall 57.

The operation of the power generation facility maintenance support system having the above configuration will be described with reference to FIGS.

The power generation company 1 has a power generation facility 5 owned by itself.
Request to the service center 2 for the monitoring work. At this time, the service center 2 transmits, to one or more power generation facilities 5 owned by the power generation company 1, the process values obtained in each part of the power generation facility 5 through the communication network 4 to the service center 2. Specifically, a process value transmitting unit 56 and a firewall 57 are additionally arranged. In this case, the power generation equipment 5 calculates a control signal for controlling each component of the power generation equipment 5 based on the detection values detected by the process value calculation unit 55 with the first sensor 53 and the second sensor 54, and the calculated control The signals control the operating state of each component of the power generation equipment 5 through the first control device 51 and the second control device 52, and store all process values necessary for the operation of each component in an internal memory (not shown in FIG. 3). ). The process value transmission unit 56 captures these process values through the process value calculation unit 55 and transmits the process values to the communication network 4 through the firewall 57 at the transmission timing. At the time of transmitting the process value, the time information and the ID for specifying the power generation facility 5 together with the process value
Send The service center 2 sends the first sensor 53 to the process value calculation unit 55 when necessary.
When requesting the detection value (sensor information) detected by the second sensor 54, the process value transmitting unit 56 transmits the sensor information to the communication network 4 in the same manner as the above-described processing.

In the service center 2, the process value receiving unit 12 receives various process values and sensor information transmitted from the process value transmitting unit 56 through the communication network 4 via the firewall 57. The process value receiving unit 12 transmits the received process data such as the process value and the sensor information to the process value database 2 through the control unit 20.
3 is stored.

FIG. 4 is an explanatory diagram showing an example of the contents of the process data stored in the process value database 23.

As shown in FIG. 4, the process data is managed by a process number, for example, PID001 to PID003, for each power generation facility (power generation unit) 5. The process number is composed of an ID for identifying the process data, and is taken together with the process data when the service center 2 periodically obtains the process data from the power generation facility 5. In the example shown in FIG. 4, process data is fetched at one-second intervals, as can be seen from the time data stored in the database.

Subsequently, the efficiency diagnosis unit 2 of the service center 2
The efficiency diagnosis processing of the equipment constituting the power generation equipment, which is executed in step 6, will be described.

The efficiency diagnosing unit 26 refers to the design information database 28 and investigates the types of various devices constituting the power generation facility 5.

FIG. 5 is an explanatory diagram showing an example of design information data stored in the design information database 23.

As shown in FIG. 5, the design information data includes, for each of the various types of equipment constituting the power generation equipment 5, the manufacturer of the equipment and the model of the equipment, and the manufacturer of the parts of the equipment and the manufacturer. For example, in the case of the power generation equipment (power generation unit) 1 of the power plant A, the gas turbine adopts a GT001 product of the company A, and the components constituting the gas turbine are composed of combustion parts. It is shown that the compressor uses a product of model B of CB003, the turbine uses a product of model TB001 of A, and the compressor uses a product of CP001 of A.

The efficiency diagnosing unit 26 acquires device model data for calculating the device efficiency from the device model database 24.

FIG. 6 is an explanatory diagram showing an example of device model data stored in the device model database 24.

As shown in FIG. 6, the device model data is composed of a device model represented for each part and model, and its substance is a program that can be operated on a computer. The device model data is accompanied by a process number of a process value serving as an input / output specification of a program for each device model.

The efficiency diagnosing unit 26 operates a program in accordance with input / output specifications attached to the acquired device model data.

Next, a description will be given of how the efficiency diagnosis section 26 performs the efficiency diagnosis using the acquired device model data.

FIG. 7 is a schematic configuration diagram showing a gas turbine constituted by various devices.

As shown in FIG. 7, the gas turbine
Mainly composed of compressor, combustor, turbine,
Air, combustion gas or fuel flows between the devices. For example, when the compressor, combustor, and turbine models stored in the device model database 24 are combined, the performance of each model can be calculated to calculate the performance of the entire gas turbine. For example, process data acquired from the power generation facility 5, that is, measured values such as fuel, shaft rotation speed, flow rate of intake air, temperature and properties of fuel (nitrogen concentration and methane concentration when the fuel is liquefied natural gas) are corresponded. When the input value is set to the device model, it is possible to calculate (estimate) the electrical output, the exhaust gas temperature, and the like that are originally output under the set conditions. In this case, it is assumed that each device model is operating normally, and the electric output, the exhaust gas temperature, and the like are calculated (estimated). For this reason, if a deviation occurs between the calculated (estimated) value obtained by the device model and the measured value measured using the actual device of the device model, the device (real device) is not in a normal operation state. Can be determined.

Next, FIG. 8 is a characteristic diagram showing an example of a change state between the estimated value and the measured value of the electric output in the device model data.

In FIG. 8, the horizontal axis represents time, and the vertical axis represents electric output.

As shown in FIG. 8, at the initial stage, the estimated value of the electric output and the measured value are almost the same, but the deviation between the estimated value and the measured value increases over time. Become. This means that performance deteriorates due to deterioration of one or more of the components constituting the gas turbine, and an electrical output as designed cannot be obtained. In the example shown in FIG. 8, the state when the performance of the entire gas turbine is calculated is shown. However, the performance of each component such as a compressor, a combustor, and a turbine can also be calculated. When the performance of each component is obtained in this way,
Since the parts whose performance is degraded can be specified, it is effective for grasping the cause of the failure.

The efficiency diagnosis unit 26 converts the performance calculated by the equipment model into a power generation cost, and compares the conversion result with the power generation cost obtained from the actually measured plant data.

FIG. 9 is a characteristic diagram showing an example of a change state of the power generation cost analyzed by the efficiency diagnosis unit 26.

In FIG. 9, the horizontal axis is the electric output in%, and the vertical axis is the power generation cost. The power generation cost is defined as a fuel cost necessary to obtain an electric output of a unit power generation amount, and is obtained at regular time intervals (for example, every one hour).

The “evaluation based on actually measured values” in one characteristic curve represented by an X mark in FIG.
3 means the power generation cost obtained by using the values of the electric output and the fuel flow rate and the fuel price obtained in advance. In this case, the power generation cost can be obtained by multiplying the fuel flow rate by the fuel price and dividing the multiplication result by the electric output. On the other hand, “evaluation with an estimated value by an equipment model” in another characteristic curve represented by a black circle in FIG. 9 uses an actually measured value as a fuel flow rate and an estimated value from the equipment model as an electric output. Power generation cost When the power generation costs obtained by the two evaluation methods are plotted for each load, the two characteristic curves substantially match if the performance of the device is obtained as designed.
The example illustrated in FIG. 9 illustrates a case where the power generation cost increases due to a decrease in the performance of the device.

As described above, the efficiency diagnosis unit 26 calculates the power generation cost using the actually measured process value based on the process value obtained online through the communication network 4, and assumes that the device model is in a normal state. To evaluate the power generation cost using the estimated value obtained from the equipment model.
Then, data representing the power generation cost calculated by the efficiency diagnosis unit 26 is supplied to the cost evaluation unit 30.

The cost evaluation unit 30 monitors the deviation between the power generation cost obtained from the actually measured process value and the power generation cost obtained using the estimated value based on the device model, that is, monitors the increase in the power generation cost. As the performance of any device decreases, the power generation cost increases, and when the increase exceeds a certain value, the service center 2 determines that the device needs to be replaced, and Evaluate the cost of replacement. The cost evaluation at this time is performed based on the remodeling information data stored in the remodeling information database 31.

FIG. 10 is an explanatory diagram showing an example of the remodeling information data stored in the remodeling information database 31.

As shown in FIG. 10, the remodeling information data includes the maker / model, price, replacement work cost, performance specification (design value), the maker / model of the device before remodeling, and remodeling work for each device or part. It consists of expenses. In this case, the replacement work cost is a work cost required for replacing a certain device or component with a device or component of the same type. On the other hand, the remodeling work cost is a work cost required when a certain device or part is replaced with a different type of device or part. When replacing equipment or components of a different type, the peripheral equipment such as piping may need to be remodeled, so that the operation cost is often higher than the replacement of the same type. Further, when replacing with a different type of device or part, the remodeling operation cost is different depending on the type of the previous device or part.

When evaluating the effect of replacing equipment from the viewpoint of cost, in addition to the effect of reducing the power generation cost due to the use of highly efficient equipment or parts, the loss of the initial cost required for replacing equipment or parts is also taken into consideration. There is a need to. Based on the above points, the cost evaluation unit 30 calculates the cost effect by the following equation.

[0053]

(Equation 1) In this case, the replacement cost is the sum of the purchase cost of the equipment and the operation cost associated with the installation, that is, the initial payment cost. On the other hand, the cost effect due to the improvement of the performance of the device is expressed as a function of the number of operating days because the cost effect appears as the device is used. Specifically, it is calculated by multiplying the power generation cost reduction, the actual value of the power generation per day obtained from the past process values, and the number of operating days.

In order to calculate the decrease in power generation cost, when replacing a device or part of the same type, the deviation of the power generation cost between the actually measured value and the estimated value evaluated by the efficiency diagnosing unit 26 may be obtained. When replacing the device or part, the information of the performance specification stored in the remodeling information database 31 is referred to. For example, in the case of a gas turbine, the difference between the power generation cost data and the power generation cost obtained from the actually measured value is obtained. The performance specification data stored in the remodeling information database 31 is data obtained online when the same type of equipment or parts is delivered at another power generation facility 5 of the power generation company contracted with the service center 2. Use If there is no record of delivery of equipment or parts of the same type, the decision will be made with reference to the specification information provided by the manufacturer.

Equation 1 for calculating the cost effect is a relative value as compared with a case where a device whose performance has deteriorated is continuously used without being replaced. That is, if the calculated value of the equation 1 becomes positive, it means that the cost effect by replacing the device can be obtained. When the equipment is replaced, the cost effectiveness is negative because of the initial payment costs associated with the equipment replacement. However, the value of the cost effect turns positive as the power generation facility 5 replaced with a highly efficient device is operated.

FIG. 11 is a characteristic diagram showing an example of a case where the value of the cost effect changes from negative to positive.

In FIG. 11, the horizontal axis is the number of days expressed in days, and the vertical axis is the cost effect.

As shown in FIG. 11, the cost effect is negative for the first time when the equipment is replaced, but becomes zero on the Nth day after the replacement of the equipment, and thereafter the cost effect becomes positive. , Which represents the expected value of the number of operating days that can be profitable after replacing the equipment. This is represented by the following equation.

[0059]

(Equation 2) Some devices have their life set based on the elapsed operation time. Equipment that has reached the end of its life is likely to cause damage such as cracks, thereby causing a major accident. Therefore, immediately discard the equipment and replace it with a new one. If the service life is shorter than the profitable operation days calculated by Equation 2,
Judge that it is better not to exchange in terms of cost effectiveness.

For example, in the case of a gas turbine, the life is evaluated based on an index called an equivalent operation time. The equivalent operation time is calculated by the following equation.

[0061]

(Equation 3) For equipment exposed to high temperatures, such as gas turbines, two types of damage patterns occur, called creep damage and thermal fatigue damage. Creep damage simply progresses in proportion to the elapsed operating time, whereas thermal fatigue damage progresses in proportion to the number of load changes at which stress changes occur. The equivalent operation time is defined as the total of the actual operation time and a value obtained by multiplying the number of load changes by a conversion coefficient to convert the operation time into consideration, in order to consider the deterioration of the equipment due to the two damage patterns. When the equivalent operation time reaches a predefined reference time, it is determined that the life has expired.

From the equivalent operation time and the reference time for replacement, an expected value of the number of operable days is obtained by the following equation.

[0063]

(Equation 4) However, the equivalent operation time here is the average value of the equivalent operation time of each day obtained from the past process values.

In the characteristics shown in FIG. 11, M is the number of days that can be operated. Since the value of the cost effect is positive at the time of the number of operating days M, it can be seen that if the device is used until the reference time is reached, the cost effect can be sufficiently obtained by replacing the device.

The service center 2 monitors the performance of various types of equipment with respect to the power generation equipment 5 of the power generation company 1 contracted for the monitoring operation, and when it detects a decrease in the performance of those equipments,
Power generation company 1 for equipment or parts requiring replacement
Notify. This notification is transmitted as electronic device maintenance information from the device maintenance information transmission unit 29 to the power generation company 1 through the firewall 21 and the communication network 4. In the power generation company 1, the content of the equipment maintenance information provided from the service center 2 is confirmed on the terminal screen of the repair section 6 connected to the communication network 4.

FIG. 12 is an explanatory diagram showing an example when the display contents of the equipment maintenance information are displayed on the terminal screen of the repair section 6.

At this time, the content displayed on the terminal screen of the repair section 6 relates to the display content obtained by combining the content shown in FIG. It displays equipment maintenance information related to costs. By looking at the display screen of the equipment maintenance information provided by the service center 2, the power generation company 1 confirms the degradation state of the equipment in its own power generation equipment 5, and examines whether or not to replace the equipment. I do.

The service center 2 provides equipment maintenance information on replacement of equipment.

FIG. 13 is an explanatory diagram showing an example when the display contents of the equipment maintenance information relating to the replacement of the equipment are displayed on the terminal screen of the repair section 6.

At this time, the contents displayed on the terminal screen of the repair section 6 provide some candidates for countermeasures, such as when replacing the equipment with the same type of equipment or when replacing the equipment with a new type of equipment with modification. It provides information on cost and performance (power generation cost) for each candidate.

Further, the service center 2 provides equipment maintenance information indicating the cost effect of replacing the equipment.

FIG. 14 is an explanatory diagram showing an example when the display contents of the equipment maintenance information indicating the cost effect of the replacement of the equipment are displayed on the terminal screen of the repair section 6.

At this time, the contents displayed on the terminal screen of the repair section 6 relate to the display contents according to the contents shown in FIG. 11, and the equipment maintenance information indicating the cost effect analyzed in the service center 2 is displayed. It is what is displayed. By looking at the display screen of the equipment maintenance information provided by the service center 2, the power generation company 1 quantitatively confirms the relationship between the number of days until profit is obtained and the life of the equipment when the equipment is replaced. Thus, effective information for selecting a device to be replaced can be obtained.

In addition, the service center 2 provides equipment maintenance information for ordering equipment.

FIG. 15 is an explanatory diagram showing an example when the display contents of the equipment maintenance information for ordering the equipment are displayed on the terminal screen of the repair section 6.

At this time, the contents displayed on the terminal screen of the repair section 6 show the price, the work cost, the total amount, and the order column for each manufacturer / model. When the order column corresponding to the manufacturer / model to be selected is selected by clicking, the device maintenance information of the selected content is transferred to the device manufacturer 3 shown in FIG. 1 through the communication network 4, and the device manufacturer 3 transfers the transferred device maintenance information. Receive an order for the device based on the information. After that, the equipment maker 3 delivers the ordered equipment to the power generation company 1 and performs equipment installation work including modification of the power generation equipment 5 and the like.

In this case, the provision of the equipment maintenance information
The power generation company 1 pays the service center 2 a service fee corresponding to the provision of the equipment maintenance information by the service center 2. In addition, the equipment maker 3 pays the service center 2 an appropriate brokerage fee for the service center 2 broker.

As described above, according to the power generation equipment maintenance support system of the present embodiment, when a service contract is made between the power company 1 and the service center 2, the service center 2 The plant data is constantly acquired from the power generation facility 5, a decrease in the performance of any of the various devices constituting the power generation facility 5 is detected based on the plant data, and the result is used as various equipment maintenance information. The power company 1 can provide the company 1 with proper judgment of the replacement time of the device whose performance has deteriorated by looking at the provided device maintenance information.

[0079]

As described above, according to the first aspect of the present invention, the service center constantly obtains plant data from each of the various devices constituting one or more power generation facilities, and transmits the obtained plant data. Diagnosis of the performance degradation of various devices using the diagnostic results, and when the performance degradation of the device is detected based on the diagnosis result, quantitatively determine the increase in the power generation cost due to the performance degradation of the device and the increase in the power generation cost when the device is replaced. The equipment maintenance information including the calculation result is notified to the power generation company that owns the equipment, so the power generation company objectively associates the replacement time of the equipment with the power generation cost based on the received equipment maintenance information. It is possible to decide
There is an effect that the device can be replaced at the most suitable replacement time.

According to the second aspect of the present invention, the power generation company can perceive the replacement time of the equipment to be replaced at a considerably early point, so that the power generation company can order new equipment or stop the operation. There is an effect that work such as arranging alternative power generation equipment for the equipment can be executed with a sufficient time.

According to the third aspect of the present invention,
There is an effect that the power generation company can select the cost of the equipment to be replaced under advantageous conditions while considering the performance of the new equipment and the like.

According to the fourth aspect of the present invention, the power generation company can directly order a new device through the sales company selected by itself, so that the device to be replaced can be replaced without much trouble. There is an effect that it can be acquired.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a maintenance support system for a power generation facility according to the present invention, showing a main part configuration thereof.

FIG. 2 is a block diagram showing a main configuration of a service center 2 shown in FIG.

FIG. 3 is a block diagram showing a configuration of a main part of the power generation equipment shown in FIG.

FIG. 4 is an explanatory diagram showing an example of the content of process data stored in a process value database.

FIG. 5 is an explanatory diagram showing an example of design information data stored in a design information database.

FIG. 6 is an explanatory diagram illustrating an example of device model data stored in a device model database.

FIG. 7 is a schematic configuration diagram illustrating a gas turbine including various devices.

FIG. 8 is a characteristic diagram showing an example of a change state between an estimated value of an electric output and an actually measured value in device model data.

FIG. 9 is a characteristic diagram illustrating an example of a change state of a power generation cost analyzed by an efficiency diagnosis unit.

FIG. 10 is an explanatory diagram showing an example of remodeling information data stored in a remodeling information database.

FIG. 11 is a characteristic diagram illustrating an example of a case where the value of the cost effect changes from negative to positive.

FIG. 12 is an explanatory diagram showing an example when display contents of equipment maintenance information are displayed on a terminal screen of a repair section.

FIG. 13 is an explanatory diagram showing an example when display contents of device maintenance information relating to device replacement are displayed on a terminal screen of the repair section.

FIG. 14 is an explanatory diagram illustrating an example of a case where display contents of device maintenance information indicating a cost effect of replacement of a device are displayed on a terminal screen of the repair section.

FIG. 15 is an explanatory diagram showing an example when display contents of device maintenance information for ordering a device are displayed on the terminal screen of the repair section.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power generation company 2 Service center 3 Equipment maker 4 Communication network (Internet) 5 Power generation equipment 6 Repair section 20 Control part 21 Firewall 22 Process value receiving part 23 Process value database 24 Equipment model database 25 Material information database 26 Efficiency diagnosis part 27 Life Diagnosis unit 28 Design information database 29 Equipment maintenance information transmission unit 30 Cost evaluation unit 31 Modification information database 51 First control device (Control device 1) 52 Second control device (Control device 2) 53 First sensor (Sensor 1) 54 First 2 sensor (sensor 2) 56 process value calculation unit 56 process value transmission unit 57 firewall

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Masao Furukawa 3-1-1 Kochi-cho, Hitachi-shi, Ibaraki Pref. Hitachi, Ltd. Thermal and Hydropower Division (72) Inventor Katsuhito Shimizu Omika-cho, Hitachi City, Ibaraki Prefecture 5-2-1, Hitachi, Ltd. Information Control Systems Division, Hitachi, Ltd. (72) Yasushi Hayasaka 502, Kandachi-cho, Tsuchiura-shi, Ibaraki F-term, Machinery Research Laboratory, Hitachi, Ltd. F-term (reference) 5H223 AA02 DD07 FF05

Claims (4)

[Claims] At least one power generation facility and a common service center with a power generation company having the power generation facility are connected and arranged via a communication network, and the service center connects the one or more power generation facilities. Obtain plant data from each of the various devices that make up through the communication network periodically, based on the plant data obtained from the various devices that make up the one or more power generation facilities,
When the performance degradation of the various equipment is diagnosed and the performance degradation of the equipment is detected, the power generation cost increase of the power generation facility including the power generation cost increase of the power generation facility caused by the performance degradation of the equipment and the replacement cost of the equipment. A maintenance support system for the power generation equipment, wherein the power generation equipment maintenance information is calculated quantitatively, and the equipment maintenance information including the calculation result is notified to the power generation company having the equipment through the communication network. 2. The apparatus according to claim 1, wherein the equipment maintenance information includes increase / decrease information relating to the number of operating days of the power generation equipment, which is the replacement cost of the equipment with reduced performance and the reduction cost due to the replacement of the equipment. A maintenance support system for the power generation equipment described in the above. 3. The apparatus according to claim 1, wherein the equipment maintenance information includes replacement cost information for each manufacturer when replacing the equipment with respect to the equipment whose performance has deteriorated.
2. A maintenance support system for a power generation facility according to item 1. 4. The communication network is connected and arranged with one or more sales companies that sell various kinds of equipment constituting a power generation facility, and the power generation company has reduced the performance owned by its own company with respect to the selected sales company. The maintenance support system for power generation equipment according to claim 1, wherein an order for equipment is made through the communication network.