JPS6248464B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an electrical selection control device for controlled equipment in an electric station, and in particular, the device is easy to manufacture and easy to install and change in the future. This invention relates to an easy selection control device.

[Prior art]

Prior to explaining the present invention, a conventional device and its problems will be explained. In the following description, an example will be given in which the selection control device is applied to an electrical station.

Figure 1 shows the controlled equipment around the power station busbar, and the power transmission lines F ₁ and F ₂ are connected to the power station bus line A or B by disconnectors 89A ₁ , 89A ₂ , 89B ₁ , 89B ₂ and disconnectors. equipment 52 ₁ , 52 ₂ and line side disconnector 89L ₁ ,
Connected via _89L2 . Further, for the purpose of ensuring safety when work on the track is stopped, grounding disconnectors 89E ₁ and 89E ₂ are provided on the track side. Although this figure shows a single line, it actually has three phases and has five controlled devices per line. Moreover, in a large-scale electric power plant, there can be as many as 60 lines, so the total number is quite large. These devices are collectively controlled from a control room several hundred meters away, so if you had to wire each field device and the control room operation switch individually, it would not only be a huge amount of work, but the control panel would also be large. There is a problem with poor operability. For this reason, all the devices are classified and organized into groups as shown in FIG. 2, for example, and a specific device can be operated simply by specifying the group and individual numbers. In the example in Figure 2,
Group 1 means the equipment on the A line side, Group 2 means the equipment on the B line, individual 1 is the disconnector, individual 2 is the first disconnector,
Individual number 3 indicates a second disconnector. By using this group/individual system, the number of device selection switches can be increased from the conventional m.times.n to m+n.

FIG. 3 shows the main points of the circuit portion for selecting a controlled device in the device selection control circuit which uses the group and individual selection method as described above. In this figure, P, N are control power supplies, 1X, 2X,..., nX are group selection contacts, 1Y,
2Y, ..., mY are individual selection contacts, and when any device is selected, only one relay contact each of 1X, ..., nX and 1Y, ..., mY closes, and the corresponding group selection auxiliary relay 1XX ,..., one of nXX and the auxiliary relay for individual selection 11Y, 12Y,...,
Only one of 21Y, 22Y, . . . operates to complete the selection of the desired controlled device.
In this circuit, for example, the auxiliary relay 11Y corresponds to the A line CB in FIG. 2 and means that this is selected.

When configuring such a circuit as a device,
It is more efficient to group together the necessary selection auxiliary relays for each group, and it is easier to accommodate future upgrades and modifications.
1 and 2 in Fig. 3 are auxiliary relays 1XX and 2XX for selecting this group for each group, and auxiliary relays (1 and 2) for selecting controlled devices included in this group.
In the group, 11Y, 12Y, . . . ) are shown as one unit circuit (hereinafter referred to as a group control unit), and all groups are made into a unit.

Figure 4 shows the connection relationship when the circuit shown in Figure 3 is actually installed.
The BUSA and the individual selection bus BUSB are provided on the control room side, and the group control unit 3 is provided near the controlled equipment.
The group selection bus BUSA excited by the contacts 1X, 2X, . . . , nX relays is individually wired to each group control unit 3, 3' ^, . Further, the individually selected bus lines BUSB excited by the contacts 1Y, 2Y, . . . , mY relays are collectively wired to each unit via multi-conductor plugs 4, 4 ^', .

In such a configuration, it is necessary to wire individually between the group bus line BUSA and each unit, so the external wiring needs to be wired exclusively according to each unit number, and the dedicated terminal blocks 5, 5 are used. ',...,5 ⁽ⁿ⁾ .

In FIG. 4, a group control unit is configured with one line as one group, but in FIG. 5, one group controls devices for two lines.

Group control units 6, 6', . . . are group selection buses.
It is connected to BUSA and individually selected bus line BUSB via multi-conductor plugs 7, 7', . . . and terminal blocks 8, 8', . . . as shown in the figure. That is, the first group bus 1X is connected to 6 and 6', the second group bus is connected to 6'' and 6, and half of the m individual busses BUSB are connected to 6, 6'', 6'' and 6'' through the individual bus multicore cable 9. ..., the remaining busbars are connected to 6' through the individual busbar multicore cable 10,
6. Connect to...

By doing this, it is possible to select arbitrary devices by group or individual combinations.

In such a configuration, in addition to wiring the group busbars individually as in the case of Fig. 4, only the busbars corresponding to the individual busbars of the control unit are drawn in for the individual busbars, so that the group busbars and the individual busbars are connected. Changing the number requires changing the external wiring, making it difficult to change. Particularly in the case of a substation, it is very difficult to turn off all control power supplies, so it is necessary to change the connection of common group and individual bus bars with live wires, which is not desirable.

[Purpose of the invention]

The present invention solves these problems and relates to a method for configuring a selection control device that allows for easy expansion and modification in the future and easy manufacturing of the device.

[Summary of the invention]

In the present invention, group and individual busbars are arranged in a loop using multi-core cables, and each group control unit selects and inputs only necessary information from the multi-core cables.

[Embodiments of the invention]

FIG. 6 is a device configuration diagram showing one embodiment of the present invention, in which the group selection bus BUSA and the individual selection bus BUSB are each controlled via multicore cables 11, 11', 11'', ..., 1 ^(n). Units 12, 12',..., 12 ⁽ⁿ⁾
Connect them to each other in a loop as shown in the figure. That is, multicore cable 11...multicore plug 13 of control unit 12 - internal crossover wiring 14 - multicore plug 15 - multicore cable 11' - 13' - 14' - 15' - 11'' -
...Each group and individual bus bar is wired in a loop along routes 13 ⁽ⁿ⁾ to 14 ⁽ⁿ⁾ to 15 ⁽ⁿ⁾ to 11 ⁽ⁿ⁾ .

Therefore, each control unit 12 has individual busbars for each group, and if only the necessary ones are selected and used within the unit, the external wiring can be standardized and multi-core connected. In addition to standardizing and convenient equipment manufacturing, when working with live wires, you can remove both plugs 13 and 15 of the control unit to be worked on, and run the loop wiring excluding the control unit using cable 11, making it easier to operate. It can be removed without affecting other control units. In the same way, the addition of a control unit and the removal described above can be realized by reversing the procedure.

Each control unit selects the necessary groups and individual buses that have been taken in and assigns them to the group of controlled equipment and individual numbers.
All you have to do is take it out and use it accordingly. As a specific method, FIG. 6 shows a case where a multi-core plug 16 is used. That is, each group and individual bus bar is drawn from the internal crossover wiring 14 to the fixed side of the plug 16, and only the group and individual bus bar required for the wiring on the movable side of the plug are taken out, and the relevant control is carried out through the movable and fixed sides of the plug. It is now being taken into the unit and used. In this embodiment, the control unit can be standardized because the group and individual numbers are selected by the crossover wiring between the pins on the movable side of the plug 16. By replacing only the movable side of the plug 16, any group or individual number can be selected. No.
It can be used for selection. Of course, when there is no need for individual selection, only the group bus
You can select by.

FIG. 7 shows another embodiment and has the same number as FIG. 6.
indicates the same product. The figure shows the state of the internal connections of the control unit 12, and shows the case where there are two separate groups in the same group.

This embodiment is an example for solving the case where selecting the necessary busbars for the multi-core plug 16 in FIG. 6 would result in a large number of multi-core plugs, which would be impractical. The selection of busbars is carried out by the contacts of the auxiliary relay without using the multi-core plug 16, making it easy to change the selection group and individual number of the equipment.

Each group bus bar is taken into a terminal portion 17, and an auxiliary relay 19 or 20 is connected thereto via a crossover wire 18. 19 and 20 correspond to two groups of individual buses, for example, 1 out of 10 individual buses.
The relay 19 selects the individual buses Y to 5Y, and the relay 20 selects the remaining individual buses 6Y to 10Y. Each device selection relay 21,
22 is connected to the corresponding individual bus bar through the contacts of group relays 19 and 20 as shown in the figure. Embodiments of the present invention are effective when the individual arrays of each control device are repeatedly arrayed in the same order.

In the example of FIG. 7, an arbitrary controlled circuit can be selected by changing the 17 crossover wirings. Here, 17 may be a terminal block, or may be similar to the plug 16 in the case of FIG. In addition, the number of relays 19 and 20 is two here, but if the entire control unit is to be made up of one control unit, the number of relays 19 and 20 is one.
2,... may be used for individual bus connection. Furthermore, the present invention is not limited to group or individual selection control methods, but can be applied as is to cases where devices are selected in combinations of three or more such as groups, individuals, and large groups. Furthermore, the groups and individual busbars do not need to be connected using multi-conductor plugs, but only the busbars within a range that may be necessary can be made into ring busbars and connected in advance. Further, even if the control units 12, 12', . . . are not exactly the same, there is a great advantage by applying the present invention. That is, even if the arrangement or configuration of individual groups of controlled devices differs for each control unit, this can be handled with the internal wiring length of the unit. Furthermore, it goes without saying that the present invention is not limited to equipment control in electrical stations.

〔Effect of the invention〕

According to the present invention described above, group and individual changes can be carried out only by each group control unit, and the units can be standardized.

[Brief explanation of the drawing]

1 to 5 are diagrams for explaining a conventional device selection control device, and FIGS. 6 and 7 are diagrams showing one embodiment of the present invention. 3, 6, 12... Group control unit, BUSA...
Group selection bus, BUSB...Individual selection bus.

Claims (1)

[Claims] 1. In order to remotely control controlled devices at the site from a control room, a plurality of controlled devices are divided into several groups,
In a device selection control device that assigns a unique group and individual number to each device and selects and controls it in the control room, the control room side has a control power source and one end connected to the control power source and the operator It is equipped with a contact group consisting of at least the number of groups and an individual number that closes when a group and an individual number unique to the controlled device are specified, It is equipped with a control unit that gives the equipment operation signal when the promised group and individual numbers are met, and a multi-core cable is installed between the control room contact group or the other end of the control power source and the control unit, and between the control unit. They are arranged in a loop, and each control unit receives signals into the unit using a multi-core connector that can be connected and detached from the multi-core cables all at once. What is claimed is: 1. A device selection control device, which is connected to the next control unit, etc. through a cross-over wiring, and extracts only group and individual signals promised to its own control unit from a part of the crossover wiring.