JP2749443B2 - How to create a planned distribution system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Industrial Field of the Invention The present invention relates to a power distribution system that creates a system state at a scheduled operation time for preparing a system operation procedure for a planned construction or the like. It relates to a method for creating strains.

B. Summary of the Invention The present invention relates to a method for creating a scheduled power distribution system, which simulates an operation procedure of an event directly related to and chained to an event such as construction, and performs a system operation of an event for which an operation procedure is to be created. By creating a planned system only for the range, the amount of information processing can be reduced.

C. Prior Art The monitoring and control system of the power distribution system is designed to improve the operation rate of the system equipment and the reliability of the power supply by making the operation state of the system components and equipment appropriate.

FIG. 2 shows a schematic configuration diagram of the system. Distribution line switches (including circuit breakers) S1 to S10 and linked switches T1, T2
In the system in which the distribution line division and the distribution lines are linked to each other to supply power to the customer side, the current / voltage information of the distribution line and the switching information of the switches S1 to S10, T1, T2 are transmitted and received by the transmission / reception device T.
R, and conversely, switch operation information is transmitted to the operation device of each switch.

The information received by the transmitting / receiving device TR is the SC
Is processed by the monitoring and control device main body SC to display the state of the power distribution system, and is displayed on the display command table CN. In this display command table CN, various commands from monitoring personnel are
It is given to the SC and sent as a switch operation command from the transmission / reception device TR together with the display control.

These monitoring and control systems, in addition to monitoring and control functions, create the future system status (planned system) of the distribution system,
A function is provided for creating a system operation procedure associated with an event (hereinafter, referred to as a subject) such as a construction work or a maintenance work planned based on the system state.

In order to create such a planned system, conventionally, based on information indicating the current system state, the operation is now scheduled to start by the scheduled operation start time of the subject for which the operation procedure is to be created. By changing the system status according to the content of each operation in the time series in the created subject (referred to as simulated execution), the future system status of the entire system is obtained.

D. Problems to be Solved by the Invention According to the conventional scheduled system creation method, as the size of the distribution system targeted by the monitoring and control system increases, not only does the amount of information to be processed increase, but also within a certain period of time. In addition, the number of subjects to be implemented has also increased, and there has been a problem that the processing amount has increased more and more.

An object of the present invention is to provide a method for reducing the amount of information processing for creating scheduled system information.

E. Means for Solving the Problems In order to achieve the above object, the present invention creates a future system state of the distribution system, and based on this system state, the system associated with events such as planned construction and maintenance work. In preparing the operation procedure, a direct related event having a system operation start time before the system operation end time for the event and having a system operation range at least partially sharing the system operation range by the event; A chain event linked to a related event is called, and only the system operation procedure associated with these events is simulated in chronological order until the system operation start time of the event to create a future system state of the distribution system in the system operation range. .

F. Action The system operation scope of one subject for the distribution system is almost always limited to the area regardless of the system scale targeted by the monitoring and control system. On the other hand, the approximate operation range can be estimated empirically. Due to these facts, it is not necessary to create a planned system for the entire system, but only for the system operation range expected from the subject.

Therefore, in the present invention, when creating a planned system, simulated execution is performed only on the subject directly related to the subject and the subject of the chain, and the simulated execution of the subject that is not related to the expected range of the system operation based on the subject is omitted. By doing so, the processing time for creating the scheduled system is reduced and the amount of information processing is reduced.

G. Embodiment In the configuration of FIG. 2, the monitoring control device main body SC searches the system operation range for the subject planned for the target system. Here, the system operation range of the subject is not limited to the switch whose state such as “ON” or “OFF” is changed by the operation, but also a state change section when the charging / power failure state is changed by the opening / closing operation. And a section that guarantees that the charging / power failure state changes, and further includes a switch that changes its state according to the change in the charging / power failure state. In addition, when the charging / power outage state does not change, a section that guarantees that the charging / power outage state does not change is included.

For example, the system operation range when handling distribution lines as a unit is as follows.

(1) Loop closing operation The system operation range of the switch closing operation in a state where both ends of the switch are charged is all the distribution lines belonging to both side sections of the switch.

(2) Loop opening operation The system operation range of the switch opening operation in the state where power is present at both ends of the switch and behind it is the switch in the “ON” state on both sides of the switch. All the distribution lines belonging to the section connected to.

(3) Power transmission operation The system operation range of the switch closing operation when one end of the switch is charged and the other end is blackout is the distribution line belonging to the section on the charging side and the section to be charged by the operation. All.

(4) Stop operation The system operation range of the switch opening operation in a state where the power is present behind one end of the switch and the power is not present behind the other end is “on” in both sections of the switch. With the state switch,
All distribution lines belonging to sections directly and indirectly connected.

(5) Opening / closing operation during power failure, setting operation The system operation range of the switch operation (setting operation) where the switch on / off operation and the switch on / off state does not change when both switch sections are blackout The operating range is the distribution line to which the switch belongs. Note that a switch (coupling switch) connected between different distribution lines belongs to both distribution lines here.

From the system operation range determined as described above, the system operation range of the subject for which the operation procedure has already been created is obtained. On the other hand, a systematic operation range for a subject for which an operation procedure is to be created has not yet been created, and in this creation, an operation planner first estimates a systematic operation range for the subject and specifies the system operation range along with the scheduled start and end times of the operation.

The supervisory control device main unit SC calls the directly related subject and the linked subject for the system operation range that is expected to be specified. Here, the directly related subject is a subject that has a system operation monitoring time before the scheduled operation end time of the subject (A) to be created and shares at least a part of the system operation range according to the subject (A). When (B) exists,
The subject (B) becomes a subject directly related to the subject (A). Also, the subject (B) is referred to as a directly related subject of the subject (A). In addition, as in the case of the directly related subject (B) with respect to the subject (A), the chained subject is changed to the subject (C) when the directly related subject (C) exists for the subject (B). ).

Note that the directly related subject of the chained subject is also the chained subject.

The supervisory control device main unit SC calls the directly related subject and the chain subject, simulates only the system operation procedure associated with these subjects in chronological order, and creates a planned system of the system operation range.

The above-described creation method will be specifically described with reference to FIG.

FIG. 1 is a part of the system diagram of FIG. 2, and the respective symbols are as follows.

▲: Segmented switch in “ON” state △: Segmented switch in “OFF” state □: Linked switch in “OFF” state Also, the line segment indicates the section of the distribution line, and the segmented switches S1 to S6 are timed. It shall have a closing function and a reverse lock function.

FIG. 1 (a) shows the current state of the distribution system. From this state, when creating a planned system for creating an operation procedure for the subject A that allows the distribution line F3 to be included in the system operation range, the subject B is set in Table 1 below. And the distribution lines F2 and F3 are the system operation scope, and the subject C is shown in Table 2 below.
And the distribution lines F1 and F2 are system operation ranges.

The apparatus main body SC creates a scheduled system of the subject A only by simulating the subject B and C in chronological order.

First, the system state of the simulation execution of the subject C is as shown in FIG. 1 (b), and when the linked switch T1 is turned on, the sectional switch S4 is turned on.
Is in the reverse lock state. Next, the system status of the simulation execution of the subject B is as shown in FIG.
Since the sectional switch S4 is in the reverse lock state during the closing operation, the timed closing function does not operate and remains in the "OFF" state, and the operation during the power failure occurs when the next linking switch T2 is closed and opened.

Next, a case in which only the directly related subject B of the subject A is simulated will be described.

The system state after the simulation of the subject B is as shown in FIG. 1 (d). When the sectional switch S3 is turned on, the sectional switch S4 is turned on after a certain time period by the timed closing function. When the link switch T2 is turned on, the sectional switch S6 enters the reverse power transmission lock state.

That is, in the simulation execution of only the directly related subject, the expected system operation range (F3 in this case) does not become the actually planned system state. Therefore, in the present invention, a system operation procedure is created and a planned system is obtained by simulating execution including the chain subject which is the directly related subject.

H. Effects of the Invention As described above, according to the present invention, the execution of the planned system is simulated only for the subject directly related to the subject and the subject of the chain, and the expected range of the system operation based on the subject is related to the subject. Since the simulated execution of a subject having no subject is omitted, there is an effect that the processing time for creating the planned system can be reduced and the amount of information processing can be reduced.

[Brief description of the drawings]

FIG. 1 is a system state diagram of scheduled system creation showing one embodiment of the present invention, and FIG. 2 is a schematic configuration diagram of a monitoring control system. S1 ~ S10… Segmented switch, T1, T2… Linked switch, F1, FZ2, F3
… Distribution line, SC monitoring and control device body.

Continued on the front page (72) Inventor Naoshi Kutsumi 1 Toshiba-cho, Fuchu-shi, Tokyo Inside the Toshiba Fuchu Plant Co., Ltd. (72) Katsumi Sekido 2-1-1-17 Osaki, Shinagawa-ku, Tokyo Inside Meidensha Corporation (56 References JP-A-60-98829 (JP, A) JP-A-1-152927 (JP, A) JP-A-2-51327 (JP, A)

Claims (1)

(57) [Claims] A system operation procedure for an event such as a planned construction or maintenance work is created based on the system state based on the system state. A directly related event having a system operation start time before the time and having a system operation range at least partially shared with a system operation range by the event, and a chain event chained to the directly related event are called, and these events are called. A planned distribution system creation method for a distribution system, wherein only the associated system operation procedure is simulated in chronological order to create a future system state in the system operation range.