JP2778789B2 - Power system monitoring and control equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a power system monitoring and control apparatus for displaying the open / closed state of a power system, in particular, a system currently receiving power for each substation. About.

(Prior Art) In general, each substation in a power system is a transmission substation having a system switching device such as a circuit breaker or a disconnector, a transformer, or the like, or a substation of a power receiving destination, and a substation of a power receiving source having substantially the same configuration. The opening / closing operation of the system switchgear and the monitoring of the opening / closing state are performed via a remote monitoring control device.

FIG. 7 shows a configuration example of a general power system to be monitored and controlled in such a power system. FIG. 7 is a power system diagram showing the components of the power system in a locational manner, where two receiving substations A and C (that is, transmission source substations) 100 and 110 and two receiving substations B and D 120 and 130 are shown. It is shown. A substation 100 has circuit breakers 101 and 103 and disconnector 10
2, 104 are mounted as system switchgears. Similarly, breakers 111, 113 and disconnectors 112, 114 are installed in the C substation 110, and disconnectors 121, 122, 123, 124 and breakers 125 are installed in the B substation 120.
However, in the D substation 130, disconnectors 131, 132, 133, 134 and a circuit breaker 135 are respectively mounted as system switching devices. B, D The two receiving substations 120, 130 have transformers 126, 127 to 136, 137 in addition to the above system switchgear.
However, these do not perform the opening / closing operation by themselves, and therefore have no direct relation to the following description, so that they will be ignored and the discussion will proceed.

FIG. 8 shows a conventional power system monitoring and control device. When the open / close state of the system switchgear 5 composed of the above-described circuit breaker and disconnector changes, the open / close state is provided as a local slave station. The remote monitoring control device 4 and the remote monitoring control device 3 provided as a master station are taken into the system switching device information storage device 40 of the electronic computer 1 for each substation. The display function unit 45 is a system switching device information storage device.
The power system diagram as shown in FIG. 7 is displayed on the man-machine interface device 20 in accordance with the stored contents of 40. Each time the operator changes the open / closed state of the system switchgear 5, the operator visually monitors the system open / closed state of the power system on the power system diagram and monitors the change while confirming the change in the system open / closed state. Perform control operations.

For example, how the operator determines the open / closed state of the system will be described with reference to FIG. 7. When the B substation 120 of the power receiving source is switched to the A substation 100 of the power receiving (transmission source) or The determination as to which of the C substations 100 is receiving power is made based on the open / closed state of the circuit breakers and disconnectors in the system. For example, when the circuit breaker 101 and the disconnectors 102, 121, and 123 are all “ON”, or when the circuit breaker 103 and the disconnectors 104 and
If 2,124 are all "on", B substation 120 is A substation
Judging that power is being received from 100, and when all the circuit breakers 111 and disconnectors 112, 121, 123
When 13 and disconnectors 114,122,124 are all "On",
B substation 120 determines that power is being received from C substation 100.

In the field of power system technology, along with the remarkable development, the latest technology is used for all system switching-related devices, thereby improving the reliability of the power system and stably supplying power. Also, with the development of these technologies and the increase in consumers, the power system has become complicated and large-scale.

In this complicated and large-scale power system, in order to determine the power receiving destinations of specific substations, and to monitor and control them, the operator visually checks the open / closed state of the system switching equipment,
It is necessary to determine the power transmission / reception status of the power system for each substation. For this reason, the burden on operators increases year by year, and skilled operators who have undergone considerable training are required to ensure reliable operation of the power system.

(Problems to be Solved by the Invention) As described above, at present, the monitoring of the power system is performed while the operator visually checks the power system diagram indicating the open / closed state of the system switchgear. However, when the operator monitors the power system in a complicated and large-scale power system, it is necessary to determine the substation to which the power is to be received for each substation by looking at the open / closed state of the switchgear in the complicated power system diagram. It is not always easy, and even in situations where an accident occurs in the power system and urgent measures are required, it is necessary to immediately judge the power supply system as seen from the power receiving destination and take appropriate measures, Has to be taken into account in that it will spread to a wider area and lead to a wider range of accidents.

According to the present invention, an operator who monitors a power system automatically determines a power supply system without the need to specify a substation to which power is to be received for each substation by looking at a complex power system diagram, and automatically determines a power system for each substation. By displaying the name of the substation at the power receiving destination, the operator can open and close the power system switchgear without monitoring the connection / opening status of the system switchgear on the display means when monitoring the power system. An object of the present invention is to provide a power system monitoring and control device capable of easily determining a state.

[Configuration of the invention]

(Means for Solving the Problems) In order to achieve the above object, a power system monitoring and control apparatus according to the present invention converts a switching state of a system switching device provided in each of a plurality of substations forming a power system into a substation. First storage means for storing the power receiving destination substation and a power system switching device group for forming a closed transmission line between the power receiving destination substation and the power receiving destination substation. A second storage means for storing power supply system information together with a substation name, and a transmission line closed between a certain receiving substation and a receiving substation based on the storage contents of the first and second storage means. Power receiving destination substation determining means for transmitting to the second storage means the power receiving destination substation name as seen from the power receiving source substation as power supply system information, if configured, Based on the contents stored in the first storage means In addition to displaying the open / close state of each system switchgear, when a closed transmission line is configured between a power receiving destination substation and a power receiving substation based on the storage content of the second storage means, And a man-machine interface device for displaying the name of the receiving substation at the receiving substation.

(Operation) In the power system monitoring and control device having the above configuration, the receiving substation determining means determines the receiving substation in units of substations in accordance with a change in the open / close state of the system switchgear of each substation. Since the substation name is displayed on the man-machine interface device, the complicated and large-scale open / closed state of the power system can be accurately grasped without the operator's judgment, and the power supply system can be immediately operated even in emergency situations. Therefore, the operator can respond accurately and promptly to the operation for power system monitoring and control.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to FIG. 1 to FIG.

FIG. 1 shows an embodiment of a power system monitoring and control device according to the present invention. The power system monitoring and control device is substantially constituted by the computer 1. A feature of the present invention is that a power system monitoring and control device constituted by the electronic computer 1 automatically determines a power receiving destination substation name for each power receiving substation, stores a result of the determination, and stores The function of outputting to the interface device is added.

The electronic computer 1 takes in the open / close state information of the system switchgear 5 such as a circuit breaker or disconnector via the remote monitoring control device 4 on the slave station side and the remote monitoring control device 3 on the master station side. Electronic computer 1
Is the system switching device information storage device 40, the receiving substation judgment means
50, a power system information storage device 60, and a display function unit 45. The system switching device information storage device 40 stores the switching state information of the system switching device 5 taken into the computer 1 for each power receiving substation. The power supply system information storage device 60 includes, for each power supply system constituting a closed transmission line between the power receiving destination (transmission source) substation and the power receiving source substation, a power receiving destination substation name and a system switchgear belonging thereto. Is stored, and the name of the power receiving destination substation determined by the power receiving destination substation determining means 50 is stored. The power receiving destination substation determining means 50 determines the power receiving destination substation name based on the storage contents of the system switching device information storage device 40 and the power supply system information storage device 60. The display function unit 45 extracts the open / close state information of the system switchgear from the system switchgear information storage device 40, extracts the power receiving destination substation name from the power supply system information storage device 60, and outputs the power system diagram to the man-machine interface device 20. Display.

FIG. 2 shows a specific memory configuration of the power supply system information storage device 60. The power supply system information storage device 60 has m sets of memory areas 61, 62,..., 6m for storing from the first power supply system information to the m-th power supply system information. Further, the memory area for each power supply system information has a memory area for the first power supply system information.
If we explain the case of 61 as an example,
A memory area 611 for storing the name of the power receiving substation determined by 50, a memory area 612 for storing display destination information on where to display when displayed on the man-machine interface device 20, and A memory area 613 storing numbers 1 to 1 of a plurality of system switching devices used for the determination is included.

With reference to FIGS. 3 and 4, a specific example of the power receiving destination substation determination performed by the power receiving destination substation determining means 50 will be described. FIG. 3 shows a specific example of the system opening / closing state, and FIG. 4 is a specific example expressing the contents of FIG. 2 in accordance with FIG.

In FIG. 3, the substation A, which is the substation of the power receiving destination (that is, the power transmission source), is equipped with the system switching devices 101, 102, 103, and 104, and the substation B that needs to determine the substation of the power receiving destination for each substation. There are system switchgear 121,122,123,12
4,125 have been implemented. At present, the system switchgears 101, 102 of the A substation 100 and the system switchgears 121, 123, 125 of the B substation.
Is in the “on” state, a closed power system is configured between the two substations, and the receiving substation viewed from the receiving B substation 120 is the A substation 100. Name display section 200
Is displayed as "A substation system". * In the memory area
The mark indicates the position where the display “A substation system” is performed.

FIG. 5 shows an example in which the system configuration of FIG. 3 is made more complicated, in which the substation A 100 at the receiving end and the B substation 2 at the receiving end.
The internal configuration of 00 is the same as that of FIG. Here, a C substation 110 is provided as a power receiving destination substation, and a D substation 130 is provided as a power receiving source substation. System switchgears 111, 112, 113 and 114 are mounted on the C substation 110, and system switchgears 131, 132 and 1 are mounted on the D substation 130.
33,134,135 are implemented. The substation D is currently receiving power from the substation C via the system switchgear 113,114,132,134,135. The fact that the D substation is currently receiving power from the C substation is indicated by displaying on the display unit 300 of the D substation that the destination substation name is “C substation system”.

FIG. 6 is a flowchart for explaining the operation of the receiving substation determining means 50. Hereinafter, the operation of the receiving substation determining means 50 will be described with reference to FIG.

When the open / close state of the system switch in the system changes, the system device open / close state storage device 40 shown in FIG.
The information of “ON” or “OFF” is stored in the
The flow shifts to the flow shown in the figure, and the determination procedure in the power receiving destination substation determination means 50 is started (step 70). Next, the storage information of the power supply system information storage device 60 is fetched in units of power supply system information shown in FIG. 2 (step 71), and the system switchgear device number is fetched from the storage information of the system switchgear device number 613 (step 72). It is determined whether or not all the system switching devices indicated by the system switching device number 613 taken out from the system information storage device 60 are in the “ON” state (step 73). Here, all "On"
, It is determined that power is being received, the power receiving destination substation name 611 in FIG. 2 is extracted (step 74), and the display destination information 612 is displayed in FIG.
A request for displaying the power receiving destination substation name is made to the display position of the man-machine interface device 20 indicated by (1) (step 75).

If not all of the system switchgears included in the system switchgear number 613 are “ON” in step 73, it is determined whether or not the name of the currently displayed power receiving substation is the same as the power receiving substation name. (Step 76). this is,
This is to determine whether or not the power receiving substation has a power outage due to a change in the open / closed state of the system switchgear. If the power receiving substation name is the same, the power receiving substation is indicated by the display destination information 612. A display request indicating that a power failure is occurring is made to the display position of the man-machine interface device 20 (step 77).

When the processing of step 75 or step 77 is completed, it is determined whether or not all the determinations of the power supply system information 61 have been completed (step 78). If not completed, the processing returns to step 71 and the above processing is repeated again, thus completing the processing. In this case, the processing of the receiving substation determining means means 50 ends.

The specific open / close state will be further described. First, in step 71, the system switchgear device number 613 is extracted, and in step 71
In step 3, it is determined whether or not all the devices of the system switching device number 613 are "ON" based on the system switching device opening / closing state of FIG. In the case of FIG. 3, the system switching devices 101, 102, 121, 123, 12
Since all 5 are “ON”, go to step 74,
Take out the substation A with the substation name 611 shown in the figure and step 7
Proceeding to 5, display "A substation system" as a power receiving destination substation name in the power receiving destination substation name display section 200, which is the position of the * mark of the display destination information 612 in FIG.

In the case of FIG. 5 as well, the fact that the substation at the power receiving destination can be determined in the same manner as described above can be easily analogized from the above description, and thus the detailed description is omitted.

In the above description, the judgment result of the receiving substation has been described as being displayed on the power system diagram.However, when there is a change in the receiving substation, the time and the substation By printing the name of the substation and the name of the receiving substation, such changes can be left as a history, and past changes can be accurately determined without looking at multiple power system diagrams. It is possible to know later when the substation name of the power receiving destination has changed. In this example, only the man-machine interface device 20 is changed from a display device to a printout device such as a typewriter, but the essential processing contents are not changed.

〔The invention's effect〕

As described above, according to the present invention, even when the power system is complicated and large-scaled in an important work scene in which the operator's judgment must be involved in monitoring the power system, In addition, the open / closed state of the switchgear of the power transmission system can be easily determined, the burden on the operator can be reduced, and the opening / closing operation of the system switchgear can be quickly and accurately performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a power system monitoring and control device according to the present invention, FIG. 2 is a diagram showing a memory configuration of a power system information storage device in FIG. 1, and FIG. FIG. 4 is a diagram showing an example and an opening / closing state example thereof, FIG. 4 is a diagram showing an opening / closing state obtained by applying the system opening / closing state of FIG. 3 to the power supply system information storage device of FIG. 2, and FIG. FIG. 6 is a diagram showing a configuration example and an open / closed state example, FIG. 6 is a flowchart showing a processing procedure of a receiving substation determining means in FIG. 1, FIG. 7 is a diagram showing an example of a general power system, and FIG. It is a block diagram of the conventional power system monitoring and control device. 1 ... Electronic computer, 3,4 ... Remote monitoring control device, 5 ...
System switchgear, 20 man-machine interface device, 40 System switchgear device information storage device, 45 display function unit, 50 power receiving destination substation determination means, 60 power supply system information storage device.

Claims (1)

(57) [Claims] 1. A first storage means for storing the open / close state of a system switchgear provided in each of a plurality of substations constituting a power system for each substation, the power receiving destination substation and a power receiving source substation. Second storage means for storing, as power supply system information, a system switchgear group for forming a closed transmission line between the power supply source substation and the power receiving destination substation name for each of the power receiving substations; Based on the storage contents of the second storage means, it is determined whether or not a closed transmission line is formed between a certain receiving substation and the receiving substation. Power receiving destination substation determining means for transmitting the viewed power receiving destination substation name as power system information to the second storage means, and displaying the open / close state of each system switching device based on the storage contents of the first storage means. And the contents stored in the second storage means are When configuring the power transmission line closed between the power receiving destination substation and the power receiving source substations are Zui,
A power system monitoring and control device including a man-machine interface device that displays the name of the substation at the power receiving source at the power receiving substation.