JPH04236127A - Operation management system for power station group - Google Patents

Abstract

PURPOSE:To reduce the generating cost and improve the operation control of the group of a plurality of power stations by collectively controlling the operation of each power station from one centralized operation management device through digital high-speed transmission lines. CONSTITUTION:Each input-output device 2 is connected to a plurality of power stations 1 having the same function. Then each data management device 3 is connected to each input-output device 2 so that process signals can be collected and control signals can be transmitted from and to each power station 1. In addition, each data management device 3 is connected to a centralized operation management device 4 so that the operation of each power station 1 can be controlled on the basis of process or control signals from each power station 1 and power generation demands through a digital high-speed transmission line 5. Therefore, the generating cost can be reduced and the operation control and operation management can be improved, since the power output control and abnormality are not coped with individually by each power station.

Description

[Detailed description of the invention]

0001

[Industrial Field of Application] The present invention is directed to controlling the operation of each power plant, such as a plurality of nuclear power plants installed in remote locations and nearby locations, using a centralized operation management device via a digital high-speed transmission line. The present invention relates to an operation management system for a group of power plants that controls the operation of each power plant based on process signals, control signals, and power generation demand from the power plants.

0002

BACKGROUND OF THE INVENTION Conventional nuclear power plants have individual central operating control systems. This central operation control system is used because each power plant has different functions, outputs, etc. Therefore, the status monitoring and operation control of the power plants in each nuclear power plant are performed independently.

[0003] In other words, improving the functions of a power plant, such as increasing its rated output, requires corresponding technical support, and each new large-scale power plant is based on the development of these technologies. There is. In addition, as operation control becomes more complex and requires highly specialized knowledge and driving skills,
Each power plant (also referred to as a power generating unit) is designed with an individually adapted and independent central operating control system.

[0004] Similarly, as power plants become larger, more specialized knowledge and complex operating skills are required for operation management. However, various operation support systems have already been proposed to solve these problems associated with the increase in the size of power plants.

[0005] On the other hand, recent new large-scale power plants aim at building power plants with, for example, simplified nuclear reactors that have inherent safety.

[0006] Operation control of each nuclear power plant using a nuclear reactor and a large amount of process signals can be performed by using a line capable of high-speed transmission and a computer system with high-speed data processing ability. It becomes possible to solve problems that exist in the operation management of

[0007]

[Problems to be Solved by the Invention] However, each power plant, such as the plurality of nuclear power plants mentioned above, is equipped with an independent central operation control system, and this central operation control system Based on differences in output, etc.
Because the status monitoring and operation control of the power generation plants at each nuclear power plant are performed independently, the operation control becomes complex and requires a high level of specialized knowledge and operation skills. Not only does each power plant require a central operation control device and a large number of specialized operating personnel, but control of power generation output and response to abnormalities must be performed at each power plant. It is difficult to improve control.

The present invention has been made in view of the above-mentioned circumstances, and the operation control of a plurality of power plants in remote locations and nearby locations is performed by one centralized operation management device via a digital high-speed transmission line. The operation of each power plant is controlled collectively based on process signals, control signals, and power generation demand from each power plant, reducing power generation costs without controlling power output or responding to abnormalities at each power plant. The purpose of the present invention is to provide an operation management system for a group of power plants that is designed to improve power generation and operation control.

[0009]

[Means for Solving the Problems] The present invention connects each input/output device to a plurality of power plants having the same function, and connects each data management device to each input/output device to receive process signals from each of the power plants. A central operation management device is connected to each data management device to collect and transmit control signals, and a central operation management device is connected to each data management device to collect and control data from each power plant based on process signals and control signals from each power plant and power generation demand via a digital high-speed transmission line. It is connected to control the operation of the

0010

[Operation] The present invention transmits process signals and control signals from each power plant through each input/output device connected to a plurality of power plants to each data management device, and also allows each data management device to transmit process signals and control signals from each power plant to each data management device. The collection of process signals and control signals are transmitted to a centralized operation management device via a digital high-speed transmission line, and this centralized operation management device compares and calculates the process signals and control signals from each of the power plants mentioned above. In addition to diagnosing the condition of each power plant, the operation of each of the above power plants is controlled based on the power generation demand, reducing power generation costs and eliminating the need to control power output and respond to abnormalities individually at each power plant. This is designed to improve operational control and management.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to illustrated embodiments.

[0012] In FIG. 1, reference numeral 1 denotes a power plant group consisting of power plants 1a, 1b, 1c, 1d, and 1e, such as a plurality of nuclear power plants installed in remote locations and nearby locations. So, each power plant 1a, 1b, 1c, 1d, 1e
are power plants that have the same function and the same operation (same output), and these power plants 1a, 1b, 1c, 1d,
1e includes each input/output device 2a, 2b, 2c, 2d, 2e.
are connected to each other. In addition, each input/output device 2a
, 2b, 2c, 2d, 2e, each data management device 3a
, 3b, 3c, 3d, and 3e are the respective power plants 1a, 1b,
The data management devices 3a, 3b, 3c, 3d, and 3e are connected to collect process signals and transmit control signals from the data management devices 3a, 3b, 3c, 3d, and 3e. The power plants 1a, 1b, 1c, 1d, and 1e are operated based on process signals and control signals and power generation demand (power generation demand) from the power plants 1a, 1b, 1c, 1d, and 1e via the line 5. connected to control. Further, the centralized operation management device 4 has a function of a group master controller in order to simultaneously monitor and control the power plants 1a, 1b, 1c, 1d, and 1e, and controls one power plant group 1. It is designed to be controlled side-by-side based on requests.

The operation of the present invention will be explained below.

Therefore, the process signals and control signals from each power plant 1a, 1b, 1c, 1d, 1e having each input/output device 2a, 2b, 2c, 2d, 2e connected to the power plant group 1 are now Data management devices 3a, 3b, 3c, 3d,
3e, and each data management device 3a, 3b.
, 3c, 3d, 3e, each of the above power plants 1a, 1b, 1c,
The collection of process signals and control signals from 1d and 1e are transmitted to the centralized operation management device 4 via the digital high-speed transmission line 5. The centralized operation management device 4 diagnoses the status of the power plant group 1 by comparing and calculating the process signals and control signals from each of the power plants 1a, 1b, 1c, 1d, and 1e, and also diagnoses the state of the power plant group 1 based on the power generation demand. Each of the above power plants 1a, 1b
, 1c, 1d, and 1e, thereby reducing power generation costs and improving operational control without having to control power generation output and respond to abnormalities individually for each power plant.

In particular, the present invention provides operational control of power plant group 1;
For example, as a general rule, starting, stopping, and output adjustment are performed uniformly, and as a result, each power plant 1a, 1b,
The aim is to simplify the operation control and management of the power plant groups 1c, 1d, and 1e.

Next, the operation control action of the present invention shown in FIGS. 2 and 3 will be explained.

FIG. 2 shows a plurality of (5) power plants 1a, 1
b, 1c, 1d, and 1e operate each power plant 1 under unified control.
It shows how each output of a, 1b, 1c, 1d, and 1e is controlled.

Here, the centralized operation management device 4 connects the digital high-speed transmission line 5,
Operation control is achieved by transmitting data to the power plants 1a, 1b, 1c, 1d, 1e via the data management devices 3a, 3b, 3c, 3d, 3e and the input/output devices 2a, 2b, 2c, 2d, 2e. and operation management.

The specific operation control action of the present invention shown in FIG. 3 shows a state when an abnormal operation occurs in a part of the power plant group 1 (power plant 1c).

That is, since the power plant group 1 has the same function and the same output, each of the power plants 1a,
By mutual comparison of parameters among 1b, 1c, 1d, and 1e, for example, an abnormality in the power plant 1c can be quickly discovered, and at the same time, an alarm can be reported from the central operation management device 4 to the operator, and the power plant 1c can be immediately detected. Stop operation or reduce output. Further, even when restarting or increasing output, status diagnosis and operation control can be easily performed while performing comparison calculations with other power plants 1a, 1b, 1c, . . . .

[0021] Here, the reactor water level of a nuclear power plant is used as a specific example as a parameter to be compared; however,
In addition to this, it goes without saying that a large number of parameters, such as the combustion state of the fuel rods, are mutually compared within the centralized operation management system 4.

[0022] In this way, each of the above-mentioned power plants 1a,
Conventionally, abnormalities in 1b, 1c, 1d, and 1e have been determined by means such as model comparison means or standard driving standards that are set in advance and comparisons made based on these driving standards. Since all of the above power plants 1 have the same functions and the same output, there is no need to set model comparison means or standard operating standards in advance, and each of the above power plants 1a, 1b, By mutually comparing the parameters 1c, 1d, and 1e, for example, an abnormality in the power plant 1c can be easily and quickly discovered.

[0023]

As described above, according to the present invention, each input/output device is connected to a plurality of power plants having the same function, and each data management device is connected to each input/output device from each of the power plants. A central operation management device is connected to each data management device to collect process signals and transmit control signals, and a central operation management device is connected to each data management device based on the process signals and control signals from each power plant and the power generation demand through a digital high-speed transmission line. Since each power plant is connected to control its operation, it is possible to reduce power generation costs and improve operational control without having to control power generation output and respond to abnormalities individually at each power plant. Not only is this possible, but it also has excellent effects such as improving safety, reliability, and economic efficiency by simplifying the operation control system and operation management of the power plant group.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an operation management system for a power plant group according to the present invention.

FIG. 2 is a block diagram for explaining the operation of the power plant group operation management system of the present invention.

FIG. 3 is a block diagram for explaining the operation of the power plant group operation management system of the present invention.

[Explanation of symbols]

1 Power plant group 1a Power plant 2a Input/output device 3a Data management device 4 Centralized operation management device 5 Digital high-speed transmission line

Claims (1)

[Claims] Claim 1: A plurality of power plants having the same function, each input/output device connected to each power plant, and collection of process signals and transmission of control signals from each power plant to each input/output device. Each data management device is connected to each data management device to control the operation of each of the power plants based on process signals, control signals, and power generation demand from each of the power plants via digital high-speed transmission lines. What is claimed is: 1. An operation management system for a group of power plants, characterized in that it is equipped with a centralized operation management device connected in a manner similar to the above.