JP2012186979A - Automatic operation control apparatus, automatic operation control method and automatic operation control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive automatic operation control apparatus that does not become uncontrollable even if part of data necessary for operation control of generators is missing.SOLUTION: The automatic operation control apparatus includes: data acquisition means 112 for acquiring generation data g11, g12 of generators 11, 12 in a power station P1, power flow data C1 out of the power station and distribution data F1 supplied from the power station to loads; operation control means 113 for controlling the operation of each generator in accordance with the generation data, power flow data and distribution data acquired by the data acquisition means; and missing data calculation means 114 for, if there is missing data in the generation data, power flow data or distribution data, calculating the missing data from the remaining data of the corresponding type of data. The operation control means controls the operation of each generator according to the existing data and the missing data calculated by the missing data calculation means.

Description

  The present invention relates to an automatic operation control method for a generator that automatically controls operation of a generator installed in a power plant, and in particular, automatic operation even when a part of data necessary for automatic operation is missing. The present invention relates to an automatic operation control device, an automatic operation control method, and an automatic operation control program.

A generator that generates electric power is installed at the power plant, and an automatic operation control device that automatically controls the operation of the generator is used for the purpose of improving the efficiency of power generation and reducing labor costs. The automatic operation control device controls various operations of the generator such as starting of the generator, output adjustment and stopping during operation.
Here, the output of the generator is adjusted so that the amount of power used by the consumer (load) matches the amount of power generation. In order to maintain the generator output appropriately, the power plant has a watt-hour meter (power generation meter) that measures the output of the generator and a watt-hour meter that measures the amount of power distributed to the load ( Distribution meter) is installed. Based on the data obtained from these measuring instruments, the automatic operation control device manages the operating state of each generator and adjusts its output.
However, if any of the data required to control the generator is missing due to a failure of one of the measuring instruments or the disconnection of the data line connecting the measuring instrument and the control device The automatic operation control device cannot determine in what state the generator should be operated and falls into control. As a result, there is a problem that the automatic operation control device stops its operation and manual recovery is required.
In order to avoid the above situation, Patent Document 1 describes an automatic measuring device including a plurality of measuring instruments capable of measuring the same measurement value. According to the present invention, even if one measuring instrument cannot output measurement data due to a failure, it is possible to obtain measurement data from another measuring instrument that does not fail, so that a situation in which measurement data is lost can be avoided. . Therefore, by installing this automatic measuring device, automatic driving by the automatic driving control device can be continued.

Japanese Patent Laid-Open No. 7-15774

However, in the invention of Patent Document 1, a plurality of measuring instruments are required to obtain one measurement data, so that there is a problem that equipment costs increase.
The present invention has been made in view of the above-described circumstances, and even if a part of data necessary for operation control of the generator is missing, the automatic operation control device is inexpensive and does not fall out of control. An object is to provide an automatic operation control method and an automatic operation control program.

In order to solve the above-mentioned problem, the invention described in claim 1 is the power generation amount data of each generator in the power plant, the power flow data flowing from the power plant, and the load supplied from the power plant. Data acquisition means for respectively acquiring the distribution amount data to be generated, and the operation control of each generator based on the power generation amount data, the power flow data, and the distribution amount data acquired by the data acquisition means. An automatic operation control device for a generator comprising the operation control means to perform, when there is missing data in each of the power generation amount data, the power flow rate data, or the power distribution amount data, Missing data calculation means for calculating the missing data using data that is not missing, and the operation control means includes the missing data and the missing data calculation means. Wherein the automatic driving control apparatus which performs the operation control of each generator based on the missing data determined Ri.
According to the first aspect of the present invention, missing data is obtained by calculation using data that is not missing among data used for operation control of the generator, and is used for automatic operation control.
The invention according to claim 2 is characterized in that the missing data calculation means uses the fact that the sum of the power flow and the amount of power distribution is the same as the total amount of power generated by each generator. The automatic operation control apparatus according to claim 1, wherein missing data is obtained.
According to the second aspect of the present invention, missing data is calculated by using a relationship established between the demand and supply of electric power for calculating missing data.

The invention according to claim 3 is another power plant that exists in a target power transmission network including the power plant, and includes total power generation amount data and power distribution amount data of another power plant different from the power plant. 3. The automatic operation control device according to claim 1, further comprising another power plant data acquisition unit configured to acquire data, wherein the missing data calculation unit further obtains the missing data using the other power plant data. .
In the invention of claim 3, when a part of the data of a certain power plant is missing, the missing data is obtained by using the data of another power plant in cooperation with this power plant.
The invention according to claim 4 is characterized in that the missing data calculation means uses the fact that the total amount of power generation and the total amount of power distribution of all power plants existing in the target power grid are the same. The automatic operation control apparatus according to claim 3, wherein missing data is obtained.
In the invention of claim 4, the missing data is calculated by utilizing the relationship established between the power demand and the supply for the missing data.

According to the fifth aspect of the present invention, the data acquisition means is configured such that each power generation amount data of each generator in the power plant, power flow data flowing from the power plant, and power distribution amount supplied from the power plant to the load Each of the data and the missing data calculation means, when there is missing data in each of the power generation amount data, the power flow data, or the distribution amount data, the data is not missing. The step of calculating the missing data using data, and the operation control means control the operation of each generator based on the non-missing data and the missing data calculated by the missing data calculation means. And a method for controlling automatic operation of the generator.
The invention of claim 5 is an automatic operation control method corresponding to the apparatus of claim 1, and has the same operation as that of claim 1.
According to the sixth aspect of the present invention, the other power plant data acquisition means exists in the target power transmission network including the power plant, and each total power generation amount data and each power distribution of another power plant different from the power plant. 6. The generator automatic operation control method according to claim 5, further comprising a step of acquiring other power plant data including quantity data, wherein the missing data calculation means further obtains the missing data using the other power plant data. It is characterized by.
The invention of claim 6 is an automatic operation control method corresponding to the apparatus of claim 3, and has the same operation as that of claim 3.

The invention according to claim 7 is characterized by an automatic operation control program for causing a computer to execute the automatic operation control method for a generator according to claim 5 or 6.
The seventh aspect of the invention is an automatic operation control program corresponding to the method of the fifth and sixth aspects, and has the same operation as that of the first and third aspects.

  According to the present invention, even if missing data exists in the power generation amount data, the tidal flow data, and the distribution amount data necessary for controlling the generator, the missing data is calculated by the missing data calculation means. Since the generator operation control can be performed using the missing data, the automatic operation control device does not fall out of control. Moreover, since it is not necessary to install a preliminary measuring instrument, an inexpensive automatic operation control device can be obtained.

It is a schematic diagram which shows the power plant provided with the automatic driving | operation control apparatus which concerns on this invention. It is a functional block diagram of the automatic driving | operation control apparatus which concerns on this invention. It is the flowchart which showed the process by the automatic driving | operation control apparatus of this invention.

[First embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a schematic diagram showing a power plant equipped with an automatic operation control apparatus according to the present invention. FIG. 2 is a functional block diagram of the automatic operation control apparatus according to the present invention. FIG. 3 is a flowchart showing processing by the automatic operation control apparatus of the present invention. The automatic operation control apparatus according to the present embodiment includes a missing data calculation unit that calculates missing data from data that is not missing when data necessary for operation control of the generator is missing. It is characterized in that the obtained data is used instead. Note that the automatic operation control apparatus according to the present embodiment uses only data of one power plant when calculating missing data, and does not use data of other power plants.

The power plant P1 is a generator 11 and 12 that generates power, a distribution line 13 that transmits the power generated by the power generators 11 and 12 to a load, and a link line connected to the other power plants P2 and P3. Power transmission line 14 and an automatic operation control device 110 according to the present embodiment.
Although two power generators 11 and 12 are installed in this power plant P1, there may be one power generator or three or more power generators. The power generation format, power generation capacity, etc. of the generators 11 and 12 are not particularly limited. Any generator that can be controlled by the automatic operation control device 110 may be used. The outputs (power generation amounts) of the generators 11 and 12 are measured by power generation amount measuring instruments (not shown) such as watt hour meters and ammeters, respectively, and the measurement signals are automatically operated as power generation amount data g11 and g12. Has been sent to the device 110.
The distribution line 13 is an electric line that distributes both the electric power used at the load inside the power plant P1 and the electric power transmitted to the consumer outside the power plant P1 and used at the load of each consumer. . The power transmitted from the distribution line 13 is measured by a distribution meter (not shown) such as a watt hour meter or ammeter, and the measurement signal is transmitted to the automatic operation control device 110 as distribution amount data F1. .

The power transmission line 14 sends electricity from the power plant P1 when power shortage occurs at the power plant P2 or P3, and conversely from the other power plants P2, P3 when power shortage occurs at the power plant P1. It is a power line for power interchange that is used when electricity is sent. In addition, the transmission line 14 is an electric line that is linked to a power transmission network of another electric power company that does not include the power station P1 in addition to the case where the electric power line P1 is connected to the other power station as shown in the figure. It may be.
There is a power flow in the transmission line 14. This power flow is measured by a tidal flow measuring instrument (not shown) such as a watt hour meter or an ammeter, and the measurement signal is transmitted to the automatic operation control device 110 as tidal flow data C1. The power flow is calculated with the direction going out from the power plant P1 as positive and the direction flowing into the power plant P1 as negative.

The automatic operation control device 110 is a device that controls the operating state of the generators 11 and 12, from a computer equipped with a well-known CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory) and the like. Can be configured. The automatic operation control device 110 is based on the data acquired by the data acquisition unit 112 and the data acquisition unit 112 for acquiring the power generation amount data g11 and g12, the tidal flow data C1, and the distribution amount data F1 from the respective measuring instruments. If there is missing data in the data acquired by the operation control means 113 for controlling the operation of each of the generators 11 and 12 and the data acquisition means 112, the power generation amount data g11 and g12, the tidal flow data C1, and A missing data calculation means 114 for calculating missing data by using data that is not missing in the distribution amount data F1, and a data input / output means 111 for exchanging data with each measuring instrument and generator. ing. The data acquisition unit 112, the operation control unit 113, and the missing data calculation unit 114 constitute a calculation unit 115.
The automatic operation control device 110 is a device that controls various operations of the generators 11 and 12 such as generator activation, output adjustment and operation stop, and mechanically controls the operation of the generators 11 and 12.

The data input / output unit 111 accepts data necessary for automatic operation of the generators 11 and 12 from the power generation amount measuring device, the distribution amount measuring device, and the tidal flow rate measuring device, and is operated for each of the generators 11 and 12. It is an interface for outputting operation control signals such as a start command and a stop command from the control means 113.
The data acquisition means 112 not only acquires the power generation amount data g11, g12, the tidal flow data C1, and the power distribution amount data F1, but also whether or not there is any omission in data necessary for operation control of the generators 11 and 12. Determine whether. Note that data loss includes both data missing measurement where the amount of power cannot be measured due to failure of measuring instruments, and data cannot be acquired due to disconnection of data line connecting measuring instruments and automatic operation control device 110. Including.
When there is no missing data, the data acquisition unit 112 transmits the acquired data to the operation control unit 113. When there is missing data, data that is not missing is transmitted to the operation control means 113, and data necessary for calculating missing data is sent to the missing data calculation means 114 to calculate missing data. To order. Furthermore, a warning that data is missing is issued to the control room (not shown) of the power plant P1. In addition, in order to respond | correspond to this, the electric power used in a consumer is changing sequentially, The data from each measuring device are acquired for every predetermined time.

The missing data calculation unit 114 is a characteristic configuration of the present invention, calculates missing data from non-missing data received from the data acquisition unit 112, and transmits it to the operation control unit 113.
Here, when generating electricity, it is necessary to control the output of the generator so as to maintain the power supply-demand relationship for maintaining the frequency and other reasons. Specifically, between the total power generation amount G1, power flow C1 and power distribution amount F1 of the power plant P1, always,
G1 = C1 + F1 (1)
The relationship is established. Note that G1 = g11 + g12. That is, the sum of the power flow and the amount of power distribution is the same as the total amount of power generated by each generator. Therefore, when one of the power generation amount data g11 and g12, the tidal flow data C1, and the distribution amount data F1 is missing, the missing data can be obtained using the remaining three data that are not missing.
A specific example will be described in the case where the power generation amount data g11 is missing.
Power generation amount data g12 = 3000kw
Tidal flow data C1 = 1000kw
Power distribution data F1 = 6000kw
In this case, g11 = C1 + F1-g12 = 4000 kW can be obtained.

The operation control unit 113 uses the data that is not missing among the power generation amount data g11 and g12, the tidal flow data C1, and the power distribution amount data F1 and the missing data calculated by the missing data calculation unit 114 to generate the generator 11. , 12 are calculated, and a generator control signal is transmitted to each of the generators 11 and 12. For example, when there are a plurality of generators, control such as preferentially operating a generator with high power generation efficiency is performed.
The generator control signal is transmitted to the generators 11 and 12 via the data input / output means 111.
The automatic operation control apparatus 110 has been described on the assumption that the entire power plant P1 is in the power plant P1, but only the data input / output means 111 is arranged in the power plant as in the power plants P2 and P3 in FIG. The unit 115 may be arranged in a central control room at a remote location of the power plant.
Further, in this specification, the power plant is a concept including a factory having a private power generation device (generator) and general consumers, and the present invention can be applied to an automatic operation control device for controlling the operation of these power generators. It is.

A control flow of the automatic operation control device 110 described above will be described with reference to FIG.
First, the data acquisition means 112 acquires the power generation amount data g11 and g12 measured by the power generation amount measuring instrument, the tidal flow data C1 measured by the tidal current use measuring instrument, and the distribution amount data F1 measured by the power distribution measuring instrument ( Step S1).
Next, the data acquisition unit 112 determines whether there is missing data in the power generation amount data g11, g12, the tidal flow data C1, and the distribution amount data F1 (step S2). If there is missing data (Yes in step S2), the missing data is transmitted to the operation control means 113 and the missing data calculation means 114, and the missing data is calculated with respect to the missing data calculation means 114. Command (step S3). If there is no missing data (No in step S2), each data is transmitted to the operation control means 113 (step S4), and the process proceeds to step S6.
The missing data calculation means 114 calculates missing data from the non-missing data received from the data acquisition means 112 (step S5).

If there is no missing data, the operation control means 113 determines that there is missing data based on the power generation amount data g11, g12, the tidal flow data C1, and the distribution amount data F1 received from the data acquisition means 112. Based on the missing data among these data and the missing data calculated by the missing data calculation means 114, an appropriate generator operating state is obtained and a generator control signal is transmitted via the data input / output means 111. Then, the operation of the generator is controlled (step S6).
The automatic operation control method implemented by the automatic operation control device has been described above, but the automatic operation control method can also be implemented as a computer-executable program.
As described above, according to the present embodiment, even if missing data is present in the power generation amount data, the tidal flow data, and the distribution amount data necessary for controlling the generator, the missing data calculation means calculates the missing data. Thus, since the operation control of the generator can be performed using the calculated data, the automatic operation control device does not fall out of control. Moreover, since it is not necessary to install a preliminary measuring instrument, an inexpensive automatic operation control device can be obtained.

[Second Embodiment]
A second embodiment of the present invention will be described with reference to FIG. The automatic operation control device according to the present embodiment is characterized in that when calculating missing data, data of another power plant is used.
The power plants P2 and P3 are power plants in a power transmission network (target power transmission network) including the power plant P1, and are linked by power transmission lines 14, 24, and 34, respectively. Since the power plants P2 and P3 have substantially the same configuration as the power plant P1, detailed description thereof is omitted, but the power plant P2 includes generators 21 and 22, a distribution line 23, and a power transmission line 24. The power plant P3 includes generators 31 and 32, a distribution line 33, and a power transmission line 34. Each power generation amount, distribution amount, and tidal flow are measured by a measuring instrument (not shown) in the same manner as the power plant P1.
In the power plants P2 and P3, only the data input / output units 121 and 131 of the automatic operation control device are arranged, respectively. It transmits with respect to the data input / output means 111 (other power plant data acquisition means) of the automatic operation control apparatus 110 installed in the power plant P1. The automatic operation control device 110 obtains an appropriate operation state of the generators 21, 22, 31, 32 based on each transmitted data and transmits it as an operation control signal from the data input / output means 111. The operation of 22, 31, 32 is controlled.

By the way, in 1st embodiment, since the missing data was calculated using only the data of one power plant, when two or more data are missing, there is a possibility that the automatic operation control device may become uncontrollable. There was a problem. In the present embodiment, the power generation amount data g21 and g22, the tidal flow data C2 and the distribution amount data F2 of the power plant P2 acquired by the data acquisition unit 112, the power generation amount data g31 and g32 of the power plant P1, and the tidal flow data. The missing data is calculated using C3 and the distribution amount data F3.
Here, even if there are a plurality of power plants, the power is always generated so that the demand and supply of power coincide with each other. Specifically, between the total power generation amount G1, G2, G3 of each power plant and the power distribution amounts F1, F2, F3 of each power plant,
G1 + G2 + G3 = F1 + F2 + F3 Equation (2)
There is a relationship. That is, the total amount of power generated by all power plants in the target power grid and the total amount of power distribution are the same amount. Of course, there is a relationship of Gn = Cn + Fn shown as Equation (1) among the total power generation amount Gn, the tidal flow rate Cn, and the power distribution amount Fn of each power plant Pn (n = 1, 2, 3). Therefore, when one of the power generation amount data g11, g12 and the power distribution amount data F1 of the power plant P1 and the tidal flow data C1 are missing, the remaining data not missing and the other data Missing data can be obtained using the data of the power plants P2 and P3.

A specific example will be described. When the tidal flow data C1 and the distribution data F1 are missing,
Total power generation G1 at power plant P1 = 7000kw
Total power generation amount G2 of power plant P2 = 6000 kW
Total power generation amount G3 = 5000kw at power plant P3
Distribution amount F2 of power plant P2 = 5000kw
Power distribution amount P3 of power plant P3 = 7000kw
Then,
Distribution amount F1 = G1 + G2 + G3-F2-F3 = 6000 kW
Tidal flow C1 = G1-F1 = 1000kw
It can be asked.
Alternatively, it may be obtained by using the tide flow rate C2 of the power plant P2 and the tide flow rate C3 of the power plant P3.

As described above, since there is a relationship of Cn = Gn−Fn at each power plant, from G1 + G2 + G3 = F1 + F2 + F3,
(G1-F1) + (G2-F2) + (G3-F3) = 0
Therefore, C1 + C2 + C3 = 0. Therefore,
Tidal flow C2 of power plant P2 = 1000 kW
Tidal flow C3 of power plant P3 = -2000kw
In this case, the tidal flow rate C1 = −C2−C3 = 1000 kW can be obtained.
Further, the distribution amount data F1 may be obtained from the relationship of F1 = G1-C1 using the calculated tidal flow data C1.
This embodiment and the first embodiment are the same as the first embodiment except for the data and calculation formula used when the missing data calculation unit 114 calculates missing data. Therefore, the description is omitted.

  As described above, according to the present embodiment, when calculating missing data, data of other power plants linked with the transmission line is used. Therefore, among the power generation amount data and distribution amount data of each generator, Even if a total of two data of one of these and the tidal flow data C1 are missing, this data can be calculated by the missing data calculation means, so that the automatic operation control device does not fall out of control. Moreover, since it is not necessary to install a preliminary measuring instrument, an inexpensive automatic operation control device can be obtained.

  P1, P2, P3 ... Power plant, 11, 12, 21, 22, 31, 32 ... Generator, 13, 23, 33 ... Distribution line, 14, 24, 34 ... Transmission line, 110, 120, 130 ... Automatic operation Control device 111, 121, 131 ... Data input / output means, 112 ... Data acquisition means, 113 ... Operation control means, 114 ... Missing data calculation means, 115 ... Calculation unit, G1, G2, G3 ... Total power generation amount, C1, C2, C3: Tidal flow (tidal flow data), F1, F2, F3: Power distribution (power distribution data), g11, g12, g21, g22, g31, g32 ... Power generation (power generation data)

Claims (7)

Data acquisition means for acquiring each power generation amount data of each generator in the power plant, power flow data flowing from the power plant, and power distribution data supplied to the load from the power plant;
Automatic operation control of a generator comprising: the power generation amount data acquired by the data acquisition means, the power flow rate data, and the operation control means for controlling the operation of each generator based on the power distribution amount data A device,
When there is missing data in each of the power generation amount data, the power flow data, or the distribution amount data, missing data calculation for calculating the missing data by using the missing data among the respective data With means,
The automatic operation control device, wherein the operation control means controls the operation of each generator based on the missing data and the missing data obtained by the missing data calculation means.   The missing data calculation means obtains the missing data by utilizing the sum of the power flow and the amount of power distribution and the total amount of power generated by each generator. The automatic operation control device according to claim 1. Other power plant data acquisition for acquiring other power plant data that is present in the target power grid including the power plant and that includes total power generation data and power distribution data of other power plants different from the power plant Further comprising means,
The automatic operation control device according to claim 1, wherein the missing data calculation means further determines the missing data using the other power plant data.   The missing data calculation means obtains the missing data by utilizing the fact that the total amount of power generation and the total amount of power distribution of all power plants existing in the target transmission network are the same amount. The automatic operation control device according to claim 3. A data acquisition means for acquiring each power generation amount data of each generator in the power plant, power flow data flowing from the power plant, and power distribution data supplied to the load from the power plant;
The missing data calculation means calculates the missing data by using the missing data among the data when there is missing data in the power generation amount data, the power flow data, or the distribution amount data. A step to obtain by
The operation control means includes a step of controlling the operation of each of the generators based on the non-missing data and the missing data obtained by the missing data calculating means. Operation control method. Other power plant data including other power plant data acquisition means existing in the target transmission network including the power plant, and including total power generation data and power distribution data of other power plants different from the power plant Further comprising the step of obtaining
6. The automatic operation control method for a generator according to claim 5, wherein the missing data calculation means further obtains the missing data using the other power plant data.   The automatic operation control program for making a computer perform the automatic operation control method of the generator of Claim 5 or 6.

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