JPH04197039A - Forming method for scheduled systme of power distribution line - Google Patents

Abstract

PURPOSE:To alleviate information throughput by simulating the opreating procedure of the event directly relative to and chained to the event such as work, etc., and forming a scheduled system only in a system operating range of the event to be formed for the procedure. CONSTITUTION:If a scheduled system for forming an operating sequence of a case name A to be expected for a powr distribution line F3 in a system operating range is formed, a case name B is a directly relative case name having a system operating sequence and has power distribution lines F2, F3 in a system operating range, and a case name C is a directly relative case name of the name B having a system operating sequence and has power distribution lines F1, F2 in a system operating range. A mainframe SC forms a scheduled system of the name A by simulating to execute a time series sequence of only the names B, C.

Description

[Detailed Description of the Invention] A. Industrial Field of Application The present invention is directed to a power distribution system that creates a system status at a fixed time using an operator for creating system operation procedures accompanying planned construction work, etc. in a power distribution system. Regarding the method of creating a schedule system.

B0 Summary of the Invention The present invention is a method for creating a planned power distribution system, which simulates the operation procedure of an event that is directly related to and chained to an event such as construction work, and calculates the system operation range of the event for which the operation procedure is currently being created. By creating a schedule system only for the system, the amount of information processing can be reduced.

C5 Conventional technology A power distribution system monitoring and control system aims to improve the operation rate of system equipment and the reliability of power supply by optimizing the operating state of system component equipment and equipment.

FIG. 2 shows a schematic configuration diagram of the system. Distribution line segment switch (including circuit breaker) Sl-S10 and link switch T1
, T2, in which distribution line classifications and connections between the distribution lines are established and power is supplied to the consumer side, the current and voltage information of the distribution lines and the switches S1 to S10. The switching information of T1 and T2 is received by the transmitting/receiving device TR, and conversely, the operating information of the switches is transmitted to the operating device of each switch.

The information received by the transmitting/receiving device TR is sent to the supervisory control device main body S.
The information is collected at C, processed to display the power distribution system status by the supervisory control device main body SC, and displayed on the display command console CN. At this display command console CN, various commands from the supervisor are given to the main body SC, and together with display control, these commands are sent as switch operation commands from the transmitting/receiving device TR.

In addition to supervisory control functions, these supervisory control systems also have
The future state of the distribution system (planned system) is created, and events such as construction and maintenance work planned based on this system state (
It has a function to create system operation procedures associated with the subject (hereinafter referred to as subject).

In order to create such a scheduled system, conventionally, based on information representing the current system status, the operation is scheduled to start by the scheduled start time of the subject for which the operation procedure is to be created, and the operation procedure is The future system status of the entire system is obtained by changing the system status according to the content of the operator in chronological order for the subjects that have been created (referred to as simulated execution).

Problems to be solved by the D0 invention In the conventional schedule system creation method, as the scale of the power distribution system targeted by the monitoring and control system increases, not only does the amount of information to be processed increase, but also the amount of information to be processed increases. There was a problem in that the number of subjects to be processed increased and the amount of processing increased.

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

E1 Means for Solving Problems In order to achieve the above object, the present invention creates a future system state of the power distribution system, and plans construction work based on this system state.
When creating a system operation procedure accompanying an event such as maintenance work, a system operation range that has a system operation start time before the system operation end time for the event and that shares at least a part with the system operation range due to the event is defined. Call a directly related event that has a link, and a chain event that is linked to this directly related event,
Only the system operation procedures associated with these events are simulated in chronological order up to the system operation start time of the event to create the future system state of the power distribution system within the system operation range.

In most cases, the scope of system operation under one subject for an F2 effect distribution system is limited regionally, regardless of the scale of the system targeted by the monitoring and control system, and system operation planners must The approximate operating range can be estimated empirically. Based on these facts, it is not necessary to create a scheduled system for the entire system, and it is sufficient to create it only for the system operation range expected from the subject.

Therefore, in the present invention, when creating a scheduled system, simulate execution is performed only for subjects directly related to the subject and chain subjects, and simulation execution of subjects that are not related to the expected scope of system operation by the subject is omitted. By doing so, the processing time and information processing amount for creating the schedule system can be shortened.

G. Embodiment In the configuration shown in FIG. 2, the supervisory 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 switches whose states such as "on" and "off" are changed by the relevant operation, but also the state change section when the charging/power outage state changes due to the opening/closing operation, and a section that ensures that the charge/power outage state changes, and further includes a switch whose state changes as the charge/power outage state changes. Furthermore, if the charge/power outage state does not change, it includes a section that guarantees that the charge/power outage state will not change.

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

(1) Loop closing operation When both ends of the switch are charged, the system operation range of the switch closing operation shall be all the distribution lines belonging to both sections of the switch.

(2) Loop opening operation The system operation range for a switch opening operation when there is a power source behind both ends of the switch is limited to direct, indirect, and All distribution lines belonging to the section connected to

(3) When one end of the power transmission operation switch is charging and the other end is in a power outage state, the system operation range of the switch closing operation is the charging side section and the distribution line belonging to the section that will be charged by the operation. All.

(4) Shutdown operation When there is a power source behind one end of the switch and there is no power source behind the other end, the system operation range for opening the switch is "on" in both sections of the switch. This applies to all distribution lines that are directly or indirectly connected to the current switch.

(5) Opening/closing operations during power outages, setting operations, opening/closing operations when both sections of the switch are out of power,
The system operation range for switch operations (setting operations) in which the on/off state of the switch does not change is the distribution line to which the switch belongs. Note that it is assumed here that a switch (linkage switch) connected between different power distribution lines belongs to both power distribution lines.

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 determined. On the other hand, the system operation range for the subject for which the operation procedure is to be created has not been created, and in order to create this, the operation planner first estimates the system operation range for the subject and specifies the scheduled operation start and end times.

For this prospectively specified system operation range, the supervisory control device main body SC calls directly related subjects and chained subjects. Here, a directly related subject is a subject that has a system operation monitoring period before the scheduled end of operation of the subject (A) that is about to be created and that shares at least a part of the system operation range with the subject (A). When (B) exists,
Subject (B) becomes a subject directly related to subject (A).

Further, the subject (B) is called a directly related subject to the subject (A).

Similarly to the relationship between the directly related subject (B) and the subject (A) above, chained subjects can be linked to the subject (C) when there is a directly related subject (C) to the subject (B).
It becomes a subject that is linked to A).

Note that directly related subjects of chained subjects also become chained subjects.

The supervisory control device main body SC calls the above-mentioned directly related subjects and chain subjects, simulates only the system operation procedures associated with these subjects in chronological order, and creates a scheduled system of the system operation range.

The above-mentioned production method will be specifically explained with reference to FIG.

Figure 1 shows a part of the system diagram in Figure 2, and each symbol is as follows.

M: Segment switch in "person" state △: Segment switch in "off" state Open: Interlock switch in "off" state Also, the line segments represent sections of the distribution line, and the segment switches S1 to S
6 shall have a timed input function and a reverse feed lock function.

Figure 1 (a) shows the current distribution system status, and when creating a scheduled system for creating the operation procedure with subject A that includes distribution line F3 in the system operation range from this status, subject B is shown in the table below. Subject C is directly related to subject B which has the system operation procedure shown in Table 2 below, and distribution lines F2 and F3 are the system operation range, and subject C is directly related to subject B which has the system operation procedure shown in Table 2 below, and distribution lines F1 and F2 is the system operation range.

Table 1 Table 2 The device main body SC creates a schedule system for subject A by chronologically simulating execution only for these subject BSCs.

First, the system status of the simulated execution of subject C is as shown in Fig. 1(b), and when the link switch T1 is closed, the sectional switch S
4 is in the reverse feed lock state.

Next, the system status of the simulated execution of subject B is as shown in Figure 1 (c), and when the segment switch S3 is closed, the segment switch S4 is in the reverse feed lock state, so the timed closing function does not work. It remains in the "off" state and becomes operational during a power outage during the next closing and opening operations of the interlock switch T2.

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

The system status after subject B is simulated is as shown in Fig. 1(d), and when the segment switch S3 is turned on, the segment switch S4 is turned on after a certain period of time due to the timed closing function.
When the next linkage switch T2 is turned on, the section switch S6 enters the reverse power transmission lock state.

In other words, if the simulation is performed only on directly related subjects, the expected system operation range (H3 in this case) will not reach the actual planned system state. Therefore, in the present invention, the system operation procedure is created and the scheduled system is obtained through simulated execution including chain subjects that are directly related subjects.

Effects of the H8 Invention As described above, according to the present invention, when creating a scheduled system, a mock execution is performed only for subjects directly related to the subject and chain subjects, and the execution is performed in a manner that is related to the expected range of system operation by the subject. Since the simulation execution of subjects that do not exist is omitted, the processing time for creating a schedule system can be shortened and the amount of information processing can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a system state diagram for preparing a scheduled system showing an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram of a supervisory control system. S1 to S10... Sectional switch, TI, T2... Interlock switch, Fl, FZ2. H3...Distribution line, SC...
Monitoring control device body. Figure 1: System status diagram for preparing scheduled system Figure 2: Schematic configuration diagram of the monitoring and control system

Claims (1)

[Claims] (1) When creating the future system status of the power distribution system and, based on this system status, creating system operation procedures for planned construction, maintenance work, etc., before the end of system operation for the event. A directly related event that has a system operation start time in 1. A method for creating a planned power distribution system, the method comprising: creating a future system state within the system operation range by simulating only operating procedures in chronological order.