JP7259376B2 - REMOTE MONITORING CONTROL SYSTEM AND REMOTE MONITORING CONTROL METHOD - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring control system installed in a substation or the like, which is suitable for performing a display test during periodic inspection of each electric power device in the electrical station.

2. Description of the Related Art In recent years, remote monitoring and control systems have become popular in order to remotely control the operation of power equipment (for example, circuit breakers, disconnectors, and relay devices) in electrical stations such as power plants, substations, and switching stations.

FIG. 6 shows an example of a remote control system 1 that transmits control signals for exchanging data between the main power supply control center 10 and power devices 70, 71, and 75 of the power station 20 and for monitoring and controlling the power devices 70, 71, and 75. It is a block diagram shown.

A control device is installed in the main power supply control center 10, and each electrical station 20 has a remote monitoring and control device (hereinafter referred to as "ITC") 30 connected to the main power supply control center 10 via a network. are installed, and a plurality of electric stations 20, 20, . . .

In addition to the ITC 30, the power station 20 also has a centralized control device (hereinafter referred to as "OPC") 31 for monitoring the states of the power devices 70, 71, and 75 in the power station 20. , and the ITC 30 via a network SLAN. A hierarchy in which the ITC 30 and the OPC 31 are connected is generally called a station level.

There is a hierarchy called a bay level as a hierarchy below the station level, and in this bay level, for example, data processing / relay equipment (hereinafter referred to as "500 kV VDC U ) 40 and a data processing/relay unit (hereinafter referred to as “220 kV DCU”) 45 for processing/relaying data with equipment 75 of 220 kV or less is installed.

These 500kVDCU 40 and 220kVDCU 45 are connected via a network BLAN as a bay level, which is the same hierarchy, and each of the 500kVDCU 40 and 220kVDCU 45 is also connected to a network SLAN for connection with the station level, which is a higher hierarchy. there is

Below the bay level, there is a hierarchy called a process level. In this process level, I/O distributed control units (hereinafter referred to as BCUs) 50, 51 connected to the power devices 70, 71, 75 are connected. , 55 are installed, and each of the BCUs 50, 51, 55 is connected to a higher-level bay-level network BLAN.

The DCUs 40, 45-BCUs 50, 51, 55 connected to the network at each level function as management facilities 60, and these management facilities 60 have a first management facility 60A and a second management facility 60B, The ITC 30 and the OPC 31 are selectively connected to the two control facilities 60A, 60B, and each power equipment 70, 71, 75 is also selectively connected to the two control facilities 60A, 60B. Each power device 70, 71, 75 is connected to the ITC 30 and the OPC 31 via two systems of transmission lines (two management facilities 60A, 60B).

The reason why two transmission lines are provided is that one transmission line functions as a regular system and the other as a standby system. That is, normally, data is exchanged between the ITC and OPC and each of the power devices 70, 71, and 75 on the normal transmission line, and if an accident occurs on the normal transmission line, the standby transmission line is immediately switched. It can be switched and used as an emergency. In the figure, "A" after the reference numeral indicates "regular system", and "B" indicates "standby system".

JP 2009-95197 A

By the way, in the remote monitoring and control system as described above, once every several months or several years, a periodic inspection of each power device in a power station is performed. data display), and for this purpose, the power equipment to be tested and inspected must be disconnected from the remote monitoring and control system, that is, the connection cables connecting the BCU and each power equipment must be disconnected. I didn't.

Then, a personal computer for maintenance is connected to the power equipment disconnected from the remote monitoring and control system, and the power equipment is inspected.

By the way, if the test/inspection is performed without disconnecting the power equipment to be tested/inspected from the remote monitoring and control system, the signal for the test/inspection of the power equipment will be transmitted to the main power supply control center, and remote monitoring and control will not be possible. The disconnection work was necessary because the system as a whole would mistakenly assume that an abnormality or failure had occurred.

As a result, the work of disconnecting the connection cable is troublesome and time consuming, and the physical disconnection work is prone to human error. Furthermore, after the test/inspection is completed, the disconnected connection cable must be connected, which requires labor and time, and also poses the risk of human error.

Therefore, in order to solve the above problems, the present invention cuts off the standby system transmission line from other normal system transmission lines and uses it as a transmission line for transmitting data for inspection of power equipment, thereby reducing the labor and time required for inspection work. It is an object of the present invention to provide a remote monitoring control system and a remote monitoring control method.

In order to solve the above problems, the invention of claim 1 provides an ITC connected to a main power supply control center, an OPC for monitoring each power device in the power station, a first management facility, and a second management system. and equipment, wherein the ITC and OPC are selectively connected to the first management equipment and the second management equipment, and the power equipment is connected to the first management equipment and the second management equipment. It is selectively connected to the management facility, and when the power equipment is inspected, the power equipment to be inspected is automatically connected to the second management equipment, and the second management equipment is connected to the on-site monitoring control device. It is characterized in that it is automatically connected only to

According to this invention, when inspecting the power equipment, the power equipment to be inspected is automatically connected to the second management equipment, and the second management equipment is automatically connected only to the OPC.

The invention of claim 2 comprises an ITC connected to a main power supply control center, an OPC for monitoring each power device in the power station, a first management facility, and a second management facility, wherein the ITC and OPC are selectively connected to the first management facility and the second management facility, and the power equipment is selectively connected to the first management facility and the second management facility. When inspecting the power equipment, the power equipment to be inspected is connected to a second management facility, and is connected only to the second management equipment and the on-site monitoring and control device. .

According to the inventions of claims 1 and 2, when inspecting the power equipment, the power equipment to be inspected is connected to the second management facility, and is connected only to the second management facility and the OPC. , For power equipment subject to inspection, data can be uploaded and displayed on the OPC via the second management facility as a standby system, and for other power equipment not subject to inspection, regular use Through the first management facility as a system, while being remotely monitored and controlled by the main power supply control center through the ITC, data can also be uploaded and displayed on the OPC. Work such as disconnection and connection of the connection cable becomes unnecessary, the work time can be shortened accordingly, and the risk of human error can be avoided.

This figure shows an embodiment of the present invention together with FIGS. FIG. 4 is a configuration diagram for explaining the flow of data when collecting data from 500 kV equipment; FIG. 3 is a configuration diagram for explaining the flow of commands from a main power supply control center to 500 kV equipment and 220 kV or less equipment; It is a flowchart figure which shows the procedure for inspecting 220 kV or less apparatus. FIG. 4 is a configuration diagram for explaining the flow of data when inspecting equipment of 220 kV or less; FIG. 3 is a configuration diagram for explaining the flow of data when inspecting equipment of 220 kV or less in the related art;

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the illustrated embodiments.

(Embodiment)
1 to 5 show a remote control and monitoring system 1 according to this embodiment. FIG. 1 is a block diagram showing the outline of the whole, and FIG. FIG. 3 is a configuration diagram for explaining the flow, and FIG. 3 is a configuration diagram for explaining the flow of commands from the main power supply control center to 500 kV equipment and 220 kV or less equipment.

The configuration of the remote control monitoring system 1 according to this embodiment is the same as that of the remote control monitoring system 1 of FIG. 6 in which the background art has been explained, and thus the same reference numerals are used to omit detailed description.

In particular, the difference between FIG. 1 and FIG. 6 is that each facility, for example, "DCU" and "BCU" are marked with voltage classes "500 kV" and "220 kV/110 kV" in FIG. However, in FIG. 6, the voltage class is omitted. 2 to 4 and 6 are intended to explain the flow of data (information). differ.

Each facility, ITC, OPC, DCU, and BCU is provided with a hard switch or soft switch for connection and disconnection with other facilities, other power equipment, each network, etc., and the status of each facility is It can be switched.

First, the flow of collecting data (on/off state, measurement information, etc.) of each electric power device, for example, the 500 kV device 70 will be described (see FIG. 2). The transmission line used here is the first management facility 60A, which is a regular system.

Also, the data flow of the 500 kV equipment 70 is indicated by a thick line, and the direction of data flow is indicated by an arrow. Expressions for data and information flow, which will be described below, are also noted.

The above data of the 500 kV equipment 70 is raised to the bay level BLAN-A via the BCU 50A (common system) at the process level, and further to the station level SLAN-A via the 500 kV DCU 40A (common system). After that, it is sent to the main power supply control center 10 through the network line through the ITC-A.

As a result, the main power supply control center 10 can monitor and control based on the data of the 500 kV equipment 70 .

In addition, since the data of the 500 kV equipment 70 uploaded to the station level SLAN-A is also uploaded to the OPC-1 and displayed on the monitor, even the local management department can check the status of the 500 kV equipment 70. can.

In this embodiment, the data of the 500 kV equipment 70 is not sent to the BCU 50B, but the data from the standby BCU 50B (standby system) to the bay level BLAN-B to the 500 kV DCU 40B (standby system) It can also be selectively connected so as not to go to a higher hierarchy.

Next, the flow of command information from the main power supply control center 10 to each power device, for example, the 500 kV device 70 and the 220 kV or less device 75 will be described (see FIG. 3). The transmission line used here is the first management facility 60A, which is a regular system.

After collecting the data of each power device 70, 71, 75, a command is issued to each power device 70, 71 after considering other information.

This command information is sent from the main power supply control center 10 to the station level SLAN-1 through the ITC-A of the power station 20 via the network line, and is sent to the baition level BLAN-A via the 500 kVDCU 40A (common system). After that, it is transmitted to the 500 kV equipment 70 via the BCU 50A (common system) at the process level, and the 500 kV equipment 70 is controlled and managed according to the command information.

Also, the command information sent to the station level SLAN-1 is transmitted to the 220 kV or less equipment 75 through the 220 kV or less DCU 45A-BLAN-A via the BCU (common system) at the process level, and the 220 kV equipment 75 receives the command information Controlled and managed according to

Next, a procedure for inspecting a power device, for example, a device 75 of 220 kV or less will be described (see FIGS. 4 and 5).

First, it is necessary to separate the data (information) of the 220 kV or less equipment 75 to be inspected from the normal transmission line and place it on the standby transmission line. Other procedures are shown in steps 1 to 4 (see FIG. 4), and FIG. 5 shows a configuration diagram when a standby transmission line is established.

(Step 1)
The switch 43TS (soft switch) of the OPC 31 is switched to accept inspection test data (S1) (see FIG. 4). That is, it is connected to the station level network SLAN-2. As a result, the OPC 31 switches from the "normal" state to the "test" state (see FIG. 5).

(Step 2)
The hardware switch of the DCU 45B (standby system) is connected to the OPC 31 via the station level network SLAN-2 and is switched to connect to the bay level network BLAN-2 (step 2) (see FIG. 4). As a result, the DCU 45B switches from the "standby" state to the "test" state (see FIG. 5).

(Step 3)
The hardware switch 43-TLS of the BCU 55B in charge of the 220 kV or less equipment 75 to be inspected is switched to connect to the DCU 45B via the bay level network BLAN-2 and to the 220 kV or less equipment 75 to be inspected (step 3) (see Figure 4). As a result, the BCU 55B switches from the "standby" state to the "test" state (see FIG. 5).

(Step 4)
The hardware switch 43-28 of the OPC 31 is switched from "off" to "on" (step 4) (see FIG. 4). This displays the data (information) of the 220 kV or less equipment 75 to be inspected on the OPC 31 and sounds an alarm (see FIG. 5).

By performing the above steps 1 to 4, the transmission line of the standby system is changed to a transmission line of a special system called "test", and data (information ) can be displayed on the OPC 31.

Since the transmission line of this new system called "test" is established as a separate and independent system from the transmission line of the other normal system, the data (information) from the 220 kV or less equipment 75 to be inspected can be transferred to other systems. It does not flow to the normal transmission line, particularly the ITC 30 , and therefore does not go up to the main power supply control center 10 . Therefore, as the remote monitoring and control system 1, only the equipment 75 of 220 kV or less to be inspected is isolated, and the other electric power equipment 71 and 75 are remotely monitored and controlled as in the past, and the inspection at the electric station 20 is performed. Display tests (inspections) can be performed only on target electric power equipment. In addition, work such as disconnection and connection of the connection cable between the power equipment 75 to be inspected and the BCU 55 is not required, thereby shortening the work time and avoiding the risk of human error.

As described above, according to the remote monitoring and control system 1 according to this embodiment, the power equipment 75 to be inspected can be inspected only by switching various switches in each equipment without disconnecting the connection cable from the BCU 55 in charge of the equipment. , the power equipment can be separated from the normal transmission line.

1 remote control monitoring system 10 main power supply control center 20 electric station 30 ITC: remote monitoring control device 31 OPC: centralized control device 40 DCU: data processing/relay device 45 DCU
50 BCU: input/output distributed control unit 51 BCU
55 BCUs
60A First control facility 60B Second control facility 70 Power equipment 71 Power equipment 75 Power equipment

Claims (2)

Equipped with a remote monitoring control device connected to a main power supply control center, a local monitoring control device that monitors each power device in the power station, a first management facility, and a second management facility,
the remote monitoring and control device and the on-site monitoring and control device are selectively connected to the first management facility and the second management facility;
Also, the power equipment is selectively connected to the first management facility and the second management facility,
Remote monitoring characterized in that, when inspecting the power equipment, the power equipment to be inspected is automatically connected to a second management facility, and the second management equipment is automatically connected only to the on-site monitoring control device. control system. Equipped with a remote monitoring control device connected to a main power supply control center, a local monitoring control device that monitors each power device in the power station, a first management facility, and a second management facility,
the remote monitoring and control device and the on-site monitoring and control device are selectively connected to the first management facility and the second management facility;
Also, the power equipment is selectively connected to the first management facility and the second management facility,
A remote monitoring and control method, wherein, when inspecting the power equipment, the power equipment to be inspected is connected to a second management facility, and is connected only to the second management equipment and the on-site monitoring and control device.

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