JP2807338B2 - 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 connects to a power system composed of a distribution system equipped with a switch for connecting or disconnecting a distribution line and a higher system connected to the distribution system, and generates power in the higher system or the distribution system. An accident message containing multiple accident information related to the accident that was received from the upper system that monitors and controls the upper system, and the upper system sends out the accident that is sent by the upper system in the distribution system control system that controls the switch of the distribution system based on this accident message. A storage means having a plurality of storage areas for storing accident information extracted from messages, an information search means for searching each accident information stored in the storage means using the extracted accident information as a key, and searching for a related one; When the information search means finds relevant accident information,
The extracted accident information is stored in the same storage area as the accident information stored in the storage means found by the information search means. On the other hand, if the information search means cannot find the relevant information, the extraction is performed. Storage control means for storing the retrieved accident information in a storage area different from the retrieved accident information stored in the storage means, and based on the accident information stored in the storage area of the storage means. By providing recovery control means for controlling the switches in the distribution system and performing recovery operations, multiple accidents occur at the same time. Information can be managed appropriately, and the end point of the higher-level system's accident recovery operation can be grasped for each accident, and the distribution system can be properly timed for each accident. It is possible to carry out an accident recovery operation.

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 arranged in various parts of a distribution line and a control system for monitoring and controlling them, but in a narrow sense, only the control system is referred to as a system control system. . Here, the control system is referred to as a distribution system control system.

FIG. 3 is a block diagram of a conventional power system provided with such a distribution system control system. This power system is composed of a higher system 3 and a distribution system 4, and a higher system 2 and a distribution system control system 1 are connected to each other. The upper system 3 is a distribution substation, a substation, and a transmission power system of distribution line CB or higher, and a distribution substation 31 is shown as an example in the figure. The distribution system 4 is a distribution line group after the distribution line rising line 5 and is connected to the upper system 3 by this cable. 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 and a link switch 43 are provided.
Etc. are provided.

The distribution system control system 1 and the above 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 distribution line is artificially stopped, it is possible to control in advance to reduce the power outage time and the power outage range. However, such control is not possible when 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 at which the accident occurred, the location where the accident occurred, the type of 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. The upper system 2 constantly collects the status of the equipment group of the upper system 3 and transmits the collected information to the remote monitoring control information ("failure / failure necessary for the higher system to monitor and control each remote distribution station, etc." The information is edited as abnormality information SV: Supervisory and measurement information TM: Telemeter "(hereinafter referred to as SV / TM information) such as voltage and current, and transmitted to the distribution system control system.
The distribution system control system 1 recognizes the accident situation based on the information.

D. Problems to be Solved by the Invention When the distribution system control system recognizes an accident situation based on an accident message from a higher-level system, no particular problem occurs when only one accident occurs within a certain time. In other words, an accident message or SV related to one accident
-Only TM information is transmitted in chronological order according to the progress of the accident. The distribution system control system only needs to pay attention to the accident from the first reception of the information on the accident to the reception of the termination information of the higher-level accident recovery operation. It is easy to grasp the start time of the accident recovery operation.

However, in reality, the number of accidents that occur within a certain time period is not limited to one, and several accidents occur within a short time, and accident messages and SV / TM information are often transmitted randomly. . In such a case, the distribution system control system must be able to manage the accident information, and be able to accurately grasp the timing of the accident recovery operation in the distribution system for each individual accident.

SUMMARY OF THE INVENTION An object of the present invention is to satisfy such a demand, perform a proper management of accident information even when a plurality of accidents occur at the same time, and execute an accident recovery operation of the distribution system for each accident at an appropriate timing. It is to provide a control system.

E. Means for Solving the Problems The distribution system control system of the present invention monitors and controls a distribution system provided with a switch for connecting or disconnecting a distribution line, a higher system connected thereto, and this higher system. Connected to the power system configured by the host system, received from the host system an accident message including a plurality of accident situations related to the accident that occurred in the host system or the distribution system, based on the accident message, the switch based on the accident message In the power distribution system control system to be controlled, information extraction means for extracting the accident information from the accident message, storage means having a plurality of storage areas for storing the accident information extracted by the information extraction means, and the information extraction means Searches for each accident information stored in the storage means using the accident information extracted by When the information retrieval means finds related accident information, the accident information extracted by the information extraction means is stored in the storage means found by the information retrieval means. When the information retrieval means cannot find a relevant one,
Storage control means for storing the accident information extracted by the information extraction means in a storage area different from the accident information stored in the storage means searched by the information search means; and storage in the storage area of the storage means Recovery control means for controlling the switch based on the performed accident information and performing an accident recovery operation.

F. Action When an accident occurs in the upper system or the distribution system, the above system detects this and sends an accident message to the distribution system control system. Upon receiving this, the distribution system control system sends it to the information extracting means. The information extraction means receives this and extracts accident information. The information search means searches the accident information in the storage means by using the extracted accident information as a key, and searches for related information.

When the information retrieval means finds a relevant one, the storage control means stores the accident information extracted by the information extraction means in the same storage area as the accident information read from the storage means for comparison. On the other hand, when the information search means cannot find a relevant one, the storage control means stores the accident information extracted by the information extraction means in a storage area different from the accident information already stored in the storage means. Let it.

The recovery control unit controls the switch of the distribution system based on the accident information stored in the storage area of the storage unit, and performs an accident recovery operation.

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 composed of a higher system 103 and a distribution system 104, and a higher system 102 and a distribution system control system are connected to each other. The distribution system control system 101 and the upper system 102, and the upper system 102 and the upper system 103 are connected by communication lines 106 and 107, respectively, and the upper system 103 and the distribution system 104 are connected to a distribution line rising line.
Connected by 105.

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 station, a substation, and a transmission power system of distribution line CB and higher,
The figure shows the distribution station 131 as an example. The distribution system 104 is a distribution line group after the distribution line rising line 105. The distribution line 141 of the distribution system 104 is provided with, for example, a main line switch 142 and a link switch 143 as automatic switches for connecting or disconnecting the distribution line 141. 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 switch 142 and the link switch 143 are remotely operated by the distribution system control system 101 to be turned on or off. These switches and the distribution system control system 101 transmit and receive monitoring control information via the upper system 102 and the upper system 103.

The host system 102 monitors and controls the host system 103 through the communication line 107. The host system 102 constantly collects the state of the device group of the host system 103 and transmits the collected state to the power distribution system control system 101 via the communication line 106 using SV / TM information. Further, when an accident occurs in the upper system 103 or the distribution system 104, it is detected and an accident recovery operation is performed. At the same time, information on the accident is edited into a message format and transmitted to the distribution system control system 101 as an accident message.

In the above-mentioned system 103 or the distribution system 104, when a bank accident, a power supply accident, a distribution line accident, or the like occurs, these are detected by a local automatic device or an upper system 102 that monitors and controls the upper system 103, and first, 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. After these operations are completed, the recovery operation of the distribution system 104
Started by one. 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.

The host system 102 usually notifies the accident occurrence status of one accident by the accident message of the first report, and reports the recovery operation status and the re-occurrence occurrence status of the host system 103 to the second and the second.
Notify by the third accident message. Specifically, the first
In the accident message of the report, the date and time of the accident, the accident-related equipment, the equipment status of the related upper system 103, and other information,
The date and time of the accident, the equipment related to the accident, the status of the recovery operation, and other information are reported in the second and third accident messages. The distribution system control system 101 manages the accident information based on these accident messages, grasps the 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 memory 111 has a plurality of storage areas for storing accident information sent from the host system 102 for each accident. The information search unit 113 is a memory control unit 112 described later.
Retrieves the accident information read from the memory 111 by using the accident information from the information extracting unit 114 described later as a key, and searches for related information.

The memory control unit 112 stores the accident information extracted by the information extraction unit 114 in the same storage area as the accident information read from the memory 111 for comparison when the information search unit 113 finds one related to the accident information. Add and memorize. On the other hand, when the information search unit 113 cannot find a relevant one, 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. Remember.

The information extraction unit 114 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-order system 103, the status of the recovery operation, and the like from the accident messages of the first to third reports sent from the upper system 102. Is output to the information retrieval unit 113.

The recovery control unit 115, based on the accident information read from the memory 111 by the memory control unit 112, the main switch 1 of the distribution system 104
By operating the switch 42 and the link switch 143, the accident of the distribution system 104 is recovered. Monitoring and control information for operating these switches is output to the communication line 106, and the host system 102 and host system
Relay 103 and send it to the switch.

Next, the operation of the distribution system control system 101 will be described.
Assuming that the first accident has occurred in the upper system 103, the system 102 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 search unit 113 receives these, and searches for the accident information read from the memory 111 through the memory control unit 112 using these as a key. In this case, the accident information related to the received accident information is stored in the memory 111.
Has not been stored yet, the information search unit 113 determines that there is nothing related. At this time, the memory control unit 112 receives all the accident information extracted by the information extracting unit 114 from the information retrieving unit 113, and uses them as information on newly occurring accidents in the storage area of the memory 111 reserved for the accident. Write to.

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 search unit 113 receives this, and searches for the accident information read from the memory 111 through the memory control unit 112 using the information as a key. 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 retrieval unit 113. Since these are different accidents and are not related, the information search unit 113 determines that there is no related one. 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 retrieving unit 113 retrieves the accident information read from the memory 111 through the memory control unit 112 using the extracted accident occurrence date and time and the accident-related equipment as keys. 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 and the accident-related equipment of these two accidents. It is determined. The memory control unit 112 stores the accident information extracted from the accident message of the second report determined to be related to the accident information as the first accident related information for the first accident already secured in the memory 111. Write in addition to the area.
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 the accident information file 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 becomes “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).

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 recovery operation of the upper system 103 is written as the accident information, the accident recovery operation corresponding to the storage area is started. That is, the monitoring control information is
2 and the higher system 103 are relayed and sent to the distribution system 104, for example, to the main line switch 142 or the link switch 143, and these are operated to restore the distribution system 104.

As described above, the distribution system control system 101 manages accident information on a plurality of accidents that have occurred in the upper system 103 or the distribution system 104 for each accident that has occurred, and grasps the progress of the accident recovery operation in the upper system 103. I do. Then, the end point of the accident recovery operation of the upper system 103 is taken for each accident, and the accident recovery operation of the power distribution system 104 is performed at an appropriate timing for each accident.

H. Effects of the Invention As described above, the distribution system control system of the present invention includes a storage unit for storing accident information extracted from an accident message transmitted from a higher-level system, and a storage unit for storing the extracted accident information as a key. The information retrieval means for searching for the accident information that has been searched for, and searching for the relevant information, and when the information searching means finds the relevant information, the extracted accident information is stored in the storage means found by the information searching means. When the related information is not found by the information searching means, the extracted accident information is stored in the same storage area as the stored accident information. Storage control means for storing data in a storage area different from the storage area.

Therefore, even if a plurality of accidents occur at the same time and the accident information relating to these accidents is transmitted at random, it is possible to appropriately manage the accident information for each accident.

In addition, since there is provided recovery control means for controlling the switch of the distribution system based on the accident information stored in the storage area of the storage means and performing an accident recovery operation, the accident recovery operation of the upper system is performed. The end point of the operation can be considered for each accident, and the accident recovery operation of the distribution system can be performed at the appropriate timing for each accident.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electric power system including a distribution system control system according to an 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 block diagram showing a power system including a conventional distribution system control system. 101: Distribution system control system, 106: Communication line, 111:
... Memory, 112 ... Memory control unit, 113 ... Information search unit,
114: Information extraction unit, 115: Recovery control unit.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Eiji Hirai, 1 Toshiba-cho, Fuchu-shi, Tokyo Inside the Toshiba Fuchu Factory Co., Ltd. (72) Masaki Shoji 2-1-1, Osaki, Shinagawa-ku, Tokyo Meidensha Co., Ltd. (56) References JP-A-57-71228 (JP, A) JP-A-63-316621 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) H02J 3/00-5 / 00

Claims (3)

(57) [Claims] The present invention relates to a power distribution system having a switch for connecting or disconnecting a distribution line and an electric power system constituted by a higher system connected thereto, and relating to an accident occurring in the higher system or the distribution system. An accident message including a plurality of accident information is received from the system for monitoring and controlling the upper system, and the distribution system control system for controlling the switch based on the accident message extracts the accident information from the accident message. Information extraction means, storage means having a plurality of storage areas for storing the accident information extracted by the information extraction means, and each of the information stored in the storage means using the accident information extracted by the information extraction means as a key. An information search means for searching for accident information and searching for related information; and when the information search means finds relevant accident information. ,
It is possible to store the accident information extracted by the information extraction means in the same storage area as the accident information stored in the storage means found by the information search means, and to find the one related to the information search means. A storage control unit that stores the accident information extracted by the information extraction unit in a storage area different from the accident information stored in the storage unit searched by the information search unit; A power distribution system control system, comprising: recovery control means for controlling the switch based on the accident information stored in the storage area and performing an accident recovery operation. 2. The accident message according to claim 1, wherein the accident message includes information on the date and time when the accident occurred.
2. The distribution system control system according to 1. 3. The distribution system control system according to claim 1, wherein the accident message includes information on related equipment as accident information.