JP2749442B2 - Distribution system control system - Google Patents

Description

The present invention relates to a distribution system control system for controlling a distribution system.

B. Summary of the Invention The present invention is connected to a distribution system including a switch for connecting or disconnecting a distribution line and a line connecting these switches,
Storage means for storing state information indicating the state of the line and the switch, and accident line information indicating whether or not the line is an accident line, and using the information stored in the storage means to perform the switching operation In the distribution system control system that controls the distribution equipment and performs the accident restoration operation of the distribution system, the accident line information of the line that is the object of the accident restoration operation and the state information of the line that is also the object of the accident restoration operation Reading from the storage means, power transmission state determining means for determining the power transmission state of the distribution line based on the state information read by the information reading means, and the accident line read by the information reading means. A fault line determining means for determining whether or not the fault recovery operation includes a fault line based on the information, and a power transmission state determined by the power transmission state determining means described in a descriptive expression. Display means for displaying the accident line is included in the screen when the accident line determination means determines that the accident recovery line is included in the target of the accident recovery operation. As a result, the restoration status of the distribution system can be displayed on the screen in a descriptive expression, and the operator can grasp the restoration status of the accident at a glance by looking at this display.

C. Prior Art In recent years, a distribution system control system has been introduced to automate the operation of the distribution system. The distribution system control system generally refers to a system configured by switches installed in various parts of a distribution line and a control system that monitors and controls them, but in a narrow sense, only the control system is referred to as a distribution system control system. . Here, the control system is referred to as a distribution system control system.

FIG. 8 is a block diagram of a conventional power system provided with this type of distribution system control system. This power system includes a distribution system control system 1, a higher system 2, a higher system 3, and a distribution system 4. Upper system 3
Is a distribution station, a substation, and a transmission power system above distribution line CB, and distribution station 31 is shown in the figure as an example. The distribution system 4 is a group of distribution lines after the distribution line rising line 5 and is connected to the higher system 3 by this line. As an automatic switch for connecting or disconnecting the distribution line 41 of the distribution system 4,
A main line switch 42 with a remote control function, a link switch 43, and the like are provided.

The distribution system control system 1 and the upper system 2, and the upper system 2 and the upper system 3 are connected by communication lines 6 and 7, respectively. The switch of the distribution system 4 and the distribution station 31 are connected by a communication line or a group of distribution line transport equipment (not shown).

The automatic switches such as the main line switch 42 and the link switch 43 are automatically operated on site in accordance with the change of charging / discharging of both sides of the track,
The upper system 2 and the upper system 3 are relayed with the distribution system control system 1 to transmit and receive monitoring control information, thereby being remotely operated.

By the way, when the distribution system operation is classified by purpose, it can be classified into an accident recovery operation, a scheduled stop operation, a load switching operation, an emergency stop operation, and the like. The most important of these operations is the accident recovery operation. Due to the necessity of the operation, when the power distribution is stopped artificially, it is possible to control in advance so as to reduce the power outage time and the power outage range. But,
Such control is impossible if a power failure occurs due to an accident. Long-term, widespread blackouts of distribution lines without notice have a tremendous impact on local economic activity or social life. Therefore, a so-called accident restoration operation for quickly restoring a power failure due to an accident is extremely important for the distribution system control system.

In order to perform an accident recovery operation, it is first necessary to correctly understand the accident status, such as the time of the accident, the location of the accident, the cause of the accident, and the status of the upper system restoration operation. The power outage of the distribution system due to the accident is caused by an accident occurring in the distribution line 41 itself or a power outage of the higher system 3 due to the accident, which spreads. Specifically, the former is, for example, a distribution line accident, and the latter is a bank accident, a power supply accident, or the like.

These accidents are detected by local automatic equipment monitoring and controlling the upper system and the upper system 2, and an accident recovery operation is first performed in the upper system 3. For example, re-closing by a re-closing relay, re-closing, or system switching by remote operation of the host system 2 is performed. The operation of restoring the distribution system 4 starts after these operations are completed. Until this time, the upper system 2 collects information from the equipment group of the upper system 3 including the distribution station 31, edits the accident information into a message format as needed, and transmits it to the distribution system control system 1.
Usually, for one accident, the status of the occurrence of the accident is notified by the accident message of the first report, and the status of the recovery operation in the upper system 3 and the status of the occurrence of the re-accident are notified by the accident messages of the second and third reports. Further, the host system 2 always collects the status of the device group of the host system 3 and transmits it by SV / TM information.

The distribution system control system receives the accident message from the host system and extracts the accident information, and receives the SV / TM information and the section of the distribution line separated by the switch
And the state information of the switch. This information is managed, and based on this information, the progress of the accident recovery operation of the upper system is grasped, the timing of the accident recovery operation of the distribution system is accurately grasped, and the restoration target in the distribution system is correctly recognized. And perform the accident recovery operation.

At this time, if the interruption line on which the interchange operation is performed as the accident recovery operation is an accident interruption line, it is necessary to first remove the cause of the accident. For this reason, the distribution system control system determines whether the line is an accidental stop line or a sound stop line based on the accident information on the reclosing condition included in the accident message. As a result, if it is a healthy stop line, the operator immediately performs the interchange operation, and if it is an accident stop line, the local worker first removes the cause of the accident, and then executes the interchange operation.

D. Problems to be Solved by the Invention By the way, when performing the accident recovery operation as described above, the operator of the system must perform the operation accurately and respond promptly if any problems occur. It is necessary to keep track of the restoration status, that is, the charging, power outage, and the presence or absence of an accidental track to be restored. In addition, when the recovery operation ends and the operation switches to the failback operation,
The operator notifies the system of the end of the recovery operation. Generally, the restoration operation is completed when all the tracks to be restored are charged, and the operator recognizes this and declares the completion of the restoration operation to the system.

The above-described recovery status can be grasped by looking at a distribution line diagram displayed on a graphic display device that is becoming standard equipment in recent years. In this distribution line diagram, power distribution facilities such as tracks and switches are graphically represented on a street map, and states such as charge / stop, on / off, presence / absence of an accident, and the like are displayed by colors and symbols. However, it is difficult for this distribution line map to show the restoration status for each accident. In addition, operators who are unfamiliar with track diagrams are not good at grasping the restoration status from map information.

An object of the present invention is to provide a distribution system control system that solves such a problem and enables an operator to grasp at a glance the restoration status of the distribution system.

E. Means for Solving the Problems To solve the above problems, the distribution system control system of the present invention is connected to a distribution system including a switch for connecting or disconnecting a distribution line and a line connecting the switches. First storage means for storing, for each accident that has occurred in the power distribution system, information indicating a line and a switch to be subjected to the accident recovery operation; state information indicating states of the line and the switch; Second storage means for storing accident line information indicating whether or not the track is an accident line, and controlling the switch using the information stored in the first and second storage means. In the distribution system control system for performing the accident restoration operation of the distribution system, the accident line information indicating whether the accident restoration operation target line stored in the first storage means is an accident line,
Information reading means for reading the state information of the accident recovery operation target line stored in the first storage means from the second storage means, and the distribution based on the state information read by the information reading means. Power transmission state determining means for determining the power transmission state of the electric wire; and fault line determining means for determining whether or not the fault recovery operation includes a fault line based on the fault line information read by the information reading means. The power transmission state determined by the power transmission state determination means is displayed on the screen in a descriptive expression, and the accident line is included when the accident line determination means determines that the accident recovery operation includes the accident line. And a display means for displaying the information in a descriptive expression on the screen.

F. Action The information reading means reads out the accident line information of the line which is the object of the accident recovery operation based on the information stored in the first storage means and the information stored in the first storage means. Is read out from the second storage means on the basis of the information on the state of the railroad subject to the accident recovery operation. The power transmission state determining means determines the power transmission state of the distribution line based on the state information read by the information reading means, and the fault line determining means performs a fault recovery operation based on the fault line information read by the information reading means. It is determined whether or not the target includes an accident track. And
The display means displays the power transmission state determined by the power transmission state determination means on the screen in a descriptive expression, and includes the fault line when the fault line determination means determines that the fault recovery operation includes the fault line. Is displayed on the screen in a descriptive expression. This display allows the operator of the system to grasp at a glance the recovery status of the accident.

G. Embodiment Next, an embodiment of the present invention will be described. FIG. 1 is a block diagram of an electric power system including the distribution system control system according to the present embodiment. This power system is a distribution system control system
The system includes a host system 101, a host system 102, a host system 103, and a power distribution system 104. Distribution system control system 1
01 and the host system 102, and the host system 102 and the host system 103 are connected by communication lines 106 and 107, respectively.
The upper system 103 and the distribution system 104 are connected by a distribution line rising line N0.

Hereinafter, the upper system 103, the distribution system 104, and the upper system 102 will be described first, and then the distribution system control system 101 will be described in detail. The upper system 103 is a distribution substation, a substation, and a transmission power system of the distribution line CB or higher, and a distribution substation 131 is shown as an example in the figure. The distribution system 104 is a distribution line group after the distribution line rising line N0. Distribution system 10
Main lines switches S4 and S5 and a link switch S6 are provided as automatic switches for connecting or disconnecting the four lines N1, N2 and N3. These switches and the distribution station 131 are connected by a communication line or a group of distribution line transport equipment (not shown). The main switches S4 and S5 and the linked switch S6 are remotely operated by the distribution system control system 101 to be turned on or off. These switches and distribution system control systems
101 transmits and receives monitoring control information by relaying the host system 102 and the host system 103.

The host system 102 monitors and controls the host system 103 through the communication line 107. The host system 102 always collects the state change of the device group of the host system 103 and transmits it to the power distribution system control system 101 via the communication line 106 using SV / TM information.

When a bank accident, power supply accident, distribution line accident, or the like occurs in the upper system 103 or the distribution system 104, these are detected by local automatic equipment or the upper system 102 that monitors and controls the upper system 103, and first, in the upper system 103, For example, an accident recovery operation such as a reclosing by a reclosing relay, a reclosing, or a system switching by a remote operation of the host system 102 is performed. The accident recovery operation of the distribution system 104 is started after these operations are completed. Until this time, the upper system 102 collects information from the equipment group of the upper system 103 including the distribution station 131, edits the accident information into a message format as needed, and transmits it to the distribution system control system 101. Note that the SV • TM information is edited and transmitted immediately when the state changes, but the accident message is transmitted with a slight delay compared to the SV • TM information to edit after waiting a certain time for the state change.

The host system 102 usually notifies the status of the occurrence of an accident with an accident message of the first report for one accident, and reports the status of the recovery operation and the occurrence of a re-accident in the host system 3 in the accident messages of the second and third reports. To notify. Specifically, the accident message of the first report conveys the date and time of the accident, the accident-related equipment, the equipment status of the related upper system 103, and other information. The accident message of the second and third reports reports the date and time of the accident and the accident. Communicate related equipment, restoration operation status, and other information. The distribution system control system 101 manages accident information based on these accident messages, and grasps an accident recovery state of the upper system 103. And after the accident recovery operation of the upper system 103 is completed,
Perform an accident recovery operation of the distribution system 104.

Next, the distribution system control system 101 will be described in detail. The distribution system control system 101 includes an accident information management unit 110,
It comprises a state information management unit 120, an accident line determination unit 130, a restoration status display unit 150, and a restoration control unit 115.

First, the accident information management unit 110 will be described. Memory 1
11 is the accident information sent from the host system 102,
The information search unit 113 has a plurality of storage areas for storing data separately for each accident.
Each accident information read from 111 and the information extraction unit 1 described later
The accident information from 14 is compared, and the presence or absence of the relationship is determined.

When the information search unit 113 finds related accident information, the memory control unit 112 adds the accident information extracted by the information extraction unit 114 to the same storage area of the memory 111 as the accident information and stores the same. On the other hand, when the information search unit 113 cannot find the relevant accident information, the memory control unit 112 stores the accident information extracted by the information extraction unit 114 in a storage area different from the accident information already stored in the memory 111. To memorize. The memory control unit 112 has a function related to the memory control unit 123 of the state information management unit 120, which will be described later.

The information extraction unit 114 receives the first to third accident messages sent from the upper system 102, and extracts accident information such as the date and time of occurrence of the accident, the accident-related equipment, the equipment state of the associated higher system 103, and the recovery operation status. And outputs it to the information search unit 113.

Next, the operation of the accident information management unit 110 will be described. If the first accident occurs in the upper system 103, the upper system 1
02 detects this, and sends the accident message of the first report to the distribution system control system 101. Upon receipt of the information, the information extraction unit 114 extracts accident information such as the date and time of occurrence of the accident, accident-related equipment, and the like. The information retrieval unit 113 receives these, and compares the date and time of occurrence of the accident and the accident-related equipment with each accident information read from the memory 111 through the memory control unit 112. In this case, since the accident information related to the received accident information is not yet stored in the memory 111, the information search unit 113
Determines that the information is irrelevant. Memory control unit 112
At this time, all the accident information extracted by the information extracting unit 114 is received from the information retrieving unit 113, and is written into the storage area of the memory 111 reserved for the accident as information of a newly occurring accident.

When another accident occurs in the upper system 103, the upper system 102 similarly detects this and sends an accident message of the first report to the distribution system control system 101. Upon receipt of the information, the information extraction unit 114 extracts accident information such as the date and time of occurrence of the accident, accident-related equipment, and the like. The information retrieval unit 113 receives this, and compares the date and time of occurrence of the accident and the accident-related equipment with the accident information read from the memory 111 through the memory control unit 112. In this case, since the accident information of the first accident is stored in the memory 111, the accident information is given to the information search unit 113. Since these are different accidents and are not related, the information search unit 113 determines that the accident information is irrelevant. Therefore, the memory control unit 112 receives the accident information extracted by the information extraction unit 114 from the information search unit 113, and secures and stores a new storage area in the memory 111 as information on another accident that has newly occurred. .

Next, the upper-level system 102
When an informational accident message is transmitted, the information extracting unit 114 receives this message and extracts accident information such as the date and time of occurrence of the accident and accident-related equipment. The information retrieval unit 113 includes the extracted accident occurrence date and time and accident-related equipment, and the memory control unit 112.
Is compared with the accident information read from the memory 111. Since the accident information of the first accident is stored in the memory 111, when the accident information is given to the information retrieving unit 113, the information retrieving unit 113 associates the date and time of the accident of these two accidents and the accident-related equipment. It is determined. Since it is determined that the accident information is related, the memory control unit 112 uses the other accident information extracted from the accident message as the first accident information in the storage area for the first accident already secured in the memory 111. Add and write. The same processing is performed when the host system sends the third accident message of the first accident, and the accident information is additionally written in the same storage area.

When the host system 102 outputs the accident information of the second report of the second accident, the accident date and time of the accident information and the accident-related equipment are stored in the storage area reserved for the second accident. Since the accident information is related to the read accident information, the accident information is additionally written in the memory 111 in the storage area reserved for the second accident.

On the other hand, if another accident has occurred, the date and time of the accident and the accident-related equipment in the accident information are not related to any accident information already stored in the memory 111. The information is stored in another storage area.

FIG. 2 conceptually shows how the accident information extracted from the accident message is stored in the memory 111. The accident information of the first report of the first accident is stored in an accident information fail A which is a storage area reserved for that purpose (a), while the accident information of the first report of the next accident is stored in another storage area. (B). In addition, the accident information of the second and third reports of the second occurrence of the accident is related by the above-mentioned determination of the presence or absence of the relation of the accident information, and is added to the accident information file B (c).

Next, the state information management unit 120 will be described. Memory 1
Reference numeral 21 stores state information indicating the states of the lines and switches constituting the distribution lines of the distribution system 104. On the other hand, the memory 122 stores the line that had been transmitting power before the power failure due to the accident and the switch that is on, that is, the power transmission equipment before the power failure. The memory 122 secures a storage area for each distribution line and stores the information separately.

The state estimating unit 124 receives the SV / TM information transmitted from the host system 102 and detects a state change (for example, ON / OFF of the CB and presence / absence of the bank secondary voltage) related to charging / discharging of the distribution line. Then, the state change of the line and the switch is estimated, and the resulting state information on the state of the line and the switch is output to the memory control unit 123 described later. When the state change detected for a certain distribution line is a power failure, the state estimating unit 124 notifies the memory control unit 123 of the fact. That is, the state estimating unit 124 functions as a power failure determination unit.

The memory control unit 123 receives the state information from the state estimating unit 124 and writes the state information into the memory 121. When a notification of a power failure is received from the state estimating unit 124, the power transmission facility of the distribution line immediately before the power failure is read from the memory 121, and the storage area secured for each distribution line of the memory 122 as information on the power transmission facility before the power failure. Write to.

The memory control unit 123 is also connected to the memory control unit 112, reads out the contents stored in the memory 122 as necessary, and outputs the read out contents to the memory control unit 112. That is, the memory control unit 112, when the information search unit 113 determines that the accident information is irrelevant and writes the accident information of the newly-occurred accident to the memory 111, the information of the power transmission equipment before the power outage of the distribution line that has failed due to the accident A request is made to the memory control unit 123. At this time, the memory control unit 112 functions as distribution line identification means, identifies the power distribution line that has lost power based on the accident information written in the memory 111, and
Notify 3. Receiving this, the memory control unit 123 reads out the information of the power transmission equipment before the power failure of the power distribution line from the corresponding storage area of the memory 122 and sends it to the memory control unit 112. The memory control unit 112 receives this, and stores it as recovery target information together with accident information relating to the storage area of the memory 111 reserved for the accident. As described above, since the accident message is transmitted from the host system 102 slightly later than the SV / TM information, the memory control unit 112 can receive the information of the power transmission equipment before the power failure already written in the memory 122.

At this time, the memory control unit 112 and the memory control unit 123 function as a memory control unit that reads information of the power transmission facilities before the power failure from the memory 122 and writes the information into a predetermined storage area of the memory 111.

Next, the operation of the state information management unit 120 will be described. The host system 102 constantly collects information from the device group of the host system 103, edits the SV / TM information, and transmits it to the distribution system control system 101. The state estimating unit 124 receives this, and detects a state change related to charging and stopping of the distribution line. Then, the state change of the line and the switch is estimated, and information on the resulting state of the line and the switch is output to the memory control unit 123. At this time, if the detected state change is a power failure state change, it notifies the memory control unit 123 of the change.

The memory control unit 123 receives the information on the state of the distribution line and the switch from the state estimation unit 124 and writes them into the memory 121. In addition, when receiving a notification of a power outage change from the state estimating unit 124, the information of the power transmission equipment before the power outage of the power outage distribution line is read out from the memory 121, and these are stored in the memory 122 in the storage area secured for each distribution line. Write to.
As a result, in the memory 122, information on the power transmission facilities before the power failure of the distribution line in which the power failure has occurred is stored for each distribution line.

On the other hand, the memory control unit 112 determines that the information search unit 113 has no relation to the accident information extracted by the information extraction unit 114 and the accident information stored in the memory 111.
When writing the accident information of a newly generated accident into the memory 111, the memory control unit 123 is notified of the information of the transmission line before the interruption of the distribution line that has been interrupted due to the accident and requests the information to the memory control unit 123. Receiving this, the memory control unit 123 reads out the requested information on the power transmission equipment before the power failure since it is already stored in the memory 122, and sends it to the memory control unit 112. The memory control unit 112 receives this, and stores it in the storage area of the memory 111 reserved for the accident together with other accident information as information to be restored.

FIG. 3 conceptually shows how the information extracted from the SVTM information is written to the memories 121 and 122 and further written to a predetermined storage area of the memory 111.
The state information on the line and the switch estimated from the SV / TM information is first written into the memory 121. Then, in the event of a power outage change, the power transmission equipment before the power outage of the distribution line that has lost power is read out from the memory 121, and for example, the equipment NOs of the lines N0, N1, N3, and the equipment NOs of the switches S4, S5, S6 are stored in the memory. 122 distribution lines F
Write to the storage area secured for each of _{1 to} Fn. These pieces of information are read by a request from the memory control unit 112, and are stored in a corresponding accident storage area, accident information file A.
It is written together with other accident information extracted from the accident message.

Next, the accident line determination unit 130 will be described. The accident line determination unit 130 includes an information determination unit 132.
The information extracting unit 114 extracts various types of accident information from the received accident message. When the following three types of accident information are found, the information is output to the information determining unit 132.

(B) Information indicating a reclosing failure rising accident.

(B) Information indicating success in re-closing.

(C) Information indicating that there is no reclosing operation thereafter.

In the case of an accident other than a distribution line accident, that is, in the case of a higher system accident, it is not necessary to determine an accident stop line, so that the accident information is not output.

When the information determining unit 132 receives the information (a) from the information extracting unit 114, as illustrated in the distribution line diagram of FIG. 4 (a) as an example of the ground fault, the fault line is the rising line N0. When the information in (b) is received, the accident line is determined to be the load-side main line N1 (Fig. 4 (b)) of the switch S4 with the timed closing function locked out of the restoration targets, When the information of (c) is received, it is determined that the faulty track is all of the suspension lines N0 to N3 (FIG. 4 (c)) to be restored. After determining the accident track, the information determination unit 132 accesses data in the memory 121 through the memory control unit 123,
The accident line information indicating that the determined line is the accident line is written into the memory 121 as state information. (B)
It is necessary to know the switch locked by the dimension insertion function to identify the accident track when receiving the information of
Since this switch status information has already been written into the memory 121, the fault line is specified using this information.

Further, since the equipment to be recovered from the accident has already been written in the memory 111, it may be read through the memory control unit 123.

Next, the operation of the accident line determination unit 130 will be described. When a distribution line accident such as a ground fault or a short circuit is detected in the distribution system, first, a reclosing circuit and a reclosing circuit are performed by a reclosing relay or the like. If reclosing fails, the timed closing function of the mains switch, which was supplying power directly to the accident track before the accident, is locked. Re-closing is performed after this. However, if the rising line of the distribution line is an accident line, the circuit will not be closed again. During this time, the host system 102 collects the above-mentioned status change information, edits the information into SVTM information and an accident message, and transmits the edited information to the distribution system control system 101. The SV / TM information is processed by the state information management unit, and the accident information is processed by the accident information management unit 110, and the processing results are stored in the memories 122 and 111, respectively.

The information extracting unit 114 extracts the accident information (a) to (c) described above. Then, when these accident information are found, they are output to the information determination unit 132. Information judgment unit 132
When the information of (a) is received from the information extraction unit 114, the fault line is determined to be only the rising line, and when the information of (b) is received, the fault line has the timed input function of the recovery target. Judge as the load side main line of the locked switch,
When the information in (c) is received, it is determined that the faulty track is all the suspension lines to be loaded. And the memory control unit
The memory 121 is accessed through 123, and accident line information indicating that the determined line is an accident line is written into the memory 121 as state information. In this way, as shown in FIG. 3, for example, the accident line is determined based on the accident information in the accident information file A, and the obtained accident line information is stored in the memory 12.
Written to 1. The figure shows a case where a ground fault has occurred in the track N2 as an example.

The recovery control unit 115 communicates with the memory 11 through the memory control unit 112.
The accident information is read from 1 and monitored, and when the end information of the accident restoration operation of the upper system 103 is written as the accident information, the accident restoration operation corresponding to the content of the storage area is started. That is, the supervisory control information is relayed to the main system switching route or the link switch of the distribution system 104 via the upper system 102 and the higher system 103, and these are operated to restore the distribution system 104. At this time, the recovery control unit 115
The information of the equipment to be restored is read from the memory 111 through the memory control unit 112, and the accident line information is read from the memory 121 through the memory control unit 123. Then, based on this information, at the same time as correctly recognizing the restoration target, it is determined whether the line subject to the accident restoration operation is an accidental interruption line or a sound interruption line, and the interchange operation to the interruption line is performed. Implement properly.

Next, the recovery status display section 150 will be described. The recovery status display unit 150 includes a recovery status recognition unit 151 and a display unit 155.

The recovery status recognizing unit 151 further performs, as shown in FIG.
It includes an information reading unit 152, a power transmission state determining unit 153, and an accident line determining unit 154. The information reading unit 152
The data in the memory 111 is accessed through the memory control unit 112, and information indicating the line and the switch to be restored is read for each accident. As a result, the recovery target is recognized, and the state information and the accident line information regarding the recovery target are read from the memory 121 through the memory control unit 123.
When outputting the state information and the accident line information, the information reading unit 152 outputs the information together with accident identification information to indicate which accident the information corresponds to.

The power transmission state determination unit 153 determines the power transmission state of the distribution line based on the line state information read by the information reading unit 152. If all of the objects to be recovered from an accident have a power outage, all power outage information indicating this is output, and if some of the objects to be recovered are charging, some power transmission information is output, and the When all batteries are charged, all power transmission information is output.

FIG. 6 shows examples of these three types of power transmission states. In FIG. 6 (a), all the lines N0 to N2 are blackouts, and all the lines are in a blackout state. 6 (b) and 6 (c) show a part of the power transmission state. In FIG. 6 (b), the switch S6 is turned on.
Part of the line N2 is charged, while in (c), the switches S6 and S7 are turned on, and some of the lines N1 and N2 are charged. Also, the sixth
In FIG. 5D, the switches S6, S7, and CB are turned on, and the lines N0 to N2 are charged, so that the power is completely transmitted. In addition, in the figure, the switch painted out in black indicates that it is turned on. When outputting the above three types of information, the power transmission state determining unit 153 adds the corresponding accident identification information from the information reading unit 152 and outputs the information.

The accident line determination unit 154 receives the information read from the memory 121 by the information reading unit 152, and detects the accident line information included therein. Then, when the accident line information is detected, it is determined that the restoration target includes the accident line, and information indicating the fact is output to the display unit 155 together with the corresponding accident identification information similarly received from the information reading unit 152. I do. If no faulty track is detected, information indicating that no faulty track is included is output.

The display unit 155 is a power transmission state determination unit 153 and an accident line determination unit.
When the above information is received from 154, the recovery status is displayed on the screen in a descriptive expression based on the information. For example, if accident identification information indicating accident XX is received, and information indicating that the accident track is included in the restoration target is received, and partial transmission information is received, the screen shown in FIG. 7 is displayed. The accident name "accident XX" and the comment "partial power failure" and "accident track present" indicating the restoration status are displayed.

Next, the operation of the recovery status display unit 150 will be described. The information reading unit 152 stores the data in the memory 111 through the memory control unit 112.
And reads the information indicating the track and switch to be restored for each accident. As a result, the information reading unit 152 recognizes the recovery target, and reads out the state information and the accident line information on the recovery target from the memory 121 through the memory control unit 123. Then, the information reading unit 152 adds, to the state information and the accident line information, accident identification information for indicating which accident the information corresponds to, and outputs the information to the power transmission state judgment unit 153 and the accident line judgment unit 154. I do.

Upon receiving the line state information from the information reading unit 152, the power transmission state determination unit 153 determines three types of power transmission states based on the information, and outputs predetermined information to the display unit 155 according to the determination result. That is, when all the restoration targets of a certain accident are out of power, it is determined that all of them are out of power, and all the outage information indicating this is output. , When all of the restoration targets are out of power,
Output all power transmission information. When outputting the above three types of information, the power transmission state determining unit 153 adds the corresponding accident identification information from the information reading unit 152 and outputs the information.

On the other hand, the accident line determination unit 154
When the information read from 121 is received, fault line information included in the information is detected. Then, when the accident line information is detected, the information indicating that the restoration target includes the accident line is output to the display unit 155 together with the corresponding accident identification information received from the information reading unit 152. If no faulty track is detected, information indicating that no faulty track is included is output.

The display unit 155 is a power transmission state determination unit 153 and an accident line determination unit.
From 154, when the information indicating the charging / discharging status and the information indicating the presence / absence of the accident track are received together with the accident identification information, the restoration status is displayed on the screen in a descriptive expression based on the information. For example, if accident identification information indicating accident XX is received, and information indicating that the accident track is included in the restoration target and partial transmission information are received, a screen as shown in FIG. 7 is displayed. Then, the accident name "accident XX", the restoration status, "partial power failure", and the comment "accident track present" are displayed.

The recovery status display unit 150 constantly performs such an operation, and since the content of the memory 121 is constantly updated in the state information management unit 120, the screen of the display unit 155 indicates the recovery status as described above. Descriptive expressions are displayed in real time. The operator can grasp the recovery status of each accident at a glance by this display.

H. Effects of the Invention The present invention is connected to a distribution system including a switch for connecting or disconnecting a distribution line, and a line connecting these switches,
Storage means for storing state information indicating the state of the line and the switch, and accident line information indicating whether or not the line is an accident line, and using the information stored in the storage means to perform the switching operation In the distribution system control system that controls the distribution equipment and performs the accident restoration operation of the distribution system, the accident line information of the line that is the object of the accident restoration operation and the state information of the line that is also the object of the accident restoration operation Reading from the storage means, power transmission state determining means for determining the power transmission state of the distribution line based on the state information read by the information reading means, and the accident line read by the information reading means. A fault line determining means for determining whether or not the fault recovery operation includes a fault line based on the information, and a power transmission state determined by the power transmission state determining means described in a descriptive expression. Display means for displaying the accident line is included in the screen when the accident line determination means determines that the accident recovery line is included in the target of the accident recovery operation. ing.

Therefore, the restoration status of the power distribution system can be displayed on the screen in a descriptive expression, and the operator can grasp the restoration status of each accident at a glance by seeing this display.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electric power system including a distribution system control system according to one embodiment of the present invention. FIG. 2 is a conceptual diagram for explaining how accident information is stored in the embodiment. FIG. 3 is a conceptual diagram for explaining how state information is stored in the embodiment, FIG. 4 is a line diagram showing a line determined to be an accident line in the embodiment, and FIG. FIG. 6 is a line diagram showing the power transmission status of the distribution line in the embodiment, FIG. 7 is a schematic diagram showing a display screen of a display unit in the embodiment, and FIG. It is a block diagram showing an electric power system provided with a distribution system control system. 101 ... distribution system control system, 106 ... communication line, 110 ... accident information management unit, 111, 121, 122 ... memory, 112, 123 ... memory control unit, 113 ... information search unit, 114 ... information extraction unit, 115 ...
Restoration control unit, 120: state information management unit, 124: state estimation unit,
130: Accident track determination unit, 132: Information determination unit, 150: Recovery status display unit, 151: Recovery status recognition unit, 152: Information reading unit, 15
3 ... power transmission state determination unit, 154 ... accident line determination unit, 155 ... display unit.

Continued on the front page (72) Inventor Naoshi Kutsumi 1 Toshiba-cho, Fuchu-shi, Tokyo Inside the Toshiba Fuchu Plant Co., Ltd. (72) Masaki Shoji 2-1-1-17 Osaki, Shinagawa-ku, Tokyo Inside Meidensha Co., Ltd.

Claims (1)

(57) [Claims] The present invention relates to a distribution system including a switch for connecting or disconnecting a distribution line and a line connecting the switch, and for each accident that occurs in the distribution system, an accident recovery operation is performed. First storage means for storing information indicating a certain line and a switch; and second storage for storing state information indicating the state of the line and the switch and accident line information indicating whether or not the line is an accident line. Storage means;
And a distribution system control system for controlling the switch using the information stored in the second storage means and performing an accident recovery operation of the distribution system, wherein the accident recovery stored in the first storage means is performed. Information reading for reading out the accident line information indicating whether the operation target line is an accident line and the state information of the accident recovery operation target line stored in the first storage unit from the second storage unit. Means, a power transmission state determining means for determining a power transmission state of the distribution line based on the state information read by the information reading means, and an accident recovery operation based on the fault line information read by the information reading means. Fault line determination means for determining whether or not the target includes an accident line; and the power transmission state determined by the power transmission state determination means is displayed on a screen in a descriptive expression. And a display means for displaying, in a descriptive expression on the screen, the fact that the accident line is included when it is determined that the accident line is included in the target of the recovery operation.