JPH0739074A - Power receiving and transforming facility - Google Patents

Abstract

PURPOSE:To provide a power receiving and transforming facility to rationalize design, save labor for operation and maintenance, realize low cost and improve reliability of system by making the power receiving and transforming facility, intelligent. CONSTITUTION:A plurality of PC 1 for disconnection switch, PC 2 for grounding apparatus, PC 3 for circuit breaker, PC 4 for protection relay and PC 5 for disconnection switch are respectively dispersely arranged for a disconnection switch 9, a grounding apparatus 10, a circuit breaker 11, a protection relay 12 and a disconnection switch 13 of the power receiving and transforming system. Each apparatus is controlled with a plurality of PCs and PCs are connected with an optical transmission line 8 in series to realize intercommunication therebetween. Moreover, PC 1 to 5 are covered with a backup PC 6 in view of improving reliability of the system.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a programmable controller (hereinafter abbreviated as PC) for each device of power receiving and transforming equipment.
The present invention relates to a power receiving and transforming facility that is controlled by, to make the facility intelligent and save labor for operation and maintenance.

[0002]

2. Description of the Related Art Conventional electric power receiving and transforming equipment partially adopts electronic application products such as multi-controllers and is becoming more electronic, but most of them are composed of wired hard sequences. In addition, wiring is wired in parallel between the boards to interface.

[0003]

Since most of the above-mentioned conventional power receiving and transforming equipments are configured by the wired hard sequence, there is a limit to intelligentization, and it is difficult to achieve high functionality and high performance, and it is difficult to expand. There is a problem that it is difficult to build a rich and flexible system, and it is difficult and time-consuming to change.

Further, in the conventional power receiving and transforming equipment, since many auxiliary relays are used, various problems such as contact failure, chattering, noise generation, etc. are caused, and it takes time for maintenance and operation, and reliability is ensured. Various measures are required, and there are problems in terms of efficiency and economy.

Further, in the conventional power receiving and transforming equipment, the number of wirings is enormous, the cost such as the labor cost increases, and it is difficult to cope with the case of remodeling or extension and to cope with the increase in the amount of information. There is.

The present invention has been made in view of the above,
The purpose of this is to provide a power receiving and transforming facility that achieves rationalization of design, labor saving of operation and maintenance, cost reduction, and improvement of system reliability by making the facility intelligent. .

[0007]

In order to achieve the above-mentioned object, the present invention provides a plurality of programmable controllers distributedly arranged for each device so as to control each device of the power receiving and transforming equipment, and the plurality of programmable controllers. A serial transmission line connecting a plurality of programmable controllers in series so that the controllers can communicate with each other.

The present invention also relates to a monitoring operation programmable controller which is connected to the plurality of programmable controllers via the serial transmission line, and which remotely controls and monitors the power receiving and transforming equipment via the plurality of programmable controllers. A gist of the present invention is to have a display device with a touch panel that is connected to a monitoring operation programmable controller and that inputs and displays information. Further, the gist of the present invention is to have a backup programmable controller for coping with an abnormality of the plurality of programmable controllers.

[0009]

In the present invention, a plurality of programmable controllers are distributed and arranged for each device of the power receiving and transforming equipment, each device is controlled by the plurality of programmable controllers, and each programmable controller is connected in series by a serial transmission line. Thus, the respective programmable controllers can communicate with each other.

Also, in the present invention, a monitoring operation programmable controller and a display device with a touch panel are provided to remotely control and monitor the power receiving and transforming equipment, and input and display information.

Further, according to the present invention, a backup programmable controller for coping with an abnormality of a plurality of programmable controllers is provided, and even when the programmable controller is abnormal, the backup programmable controller continues normal operation to improve reliability. There is.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration of a power receiving and transforming facility according to an embodiment of the present invention. The power receiving and transforming equipment shown in the figure is a disconnector PC for each of the disconnector 9, the grounding device 10, the circuit breaker 11, the protection relay 12, and the disconnector 13 of the power receiving and transforming system.
1, PC 2 for grounding device, PC 3 for circuit breaker, PC 4 for protection relay, and PC 5 for disconnecting switch are distributed. The PCs 1, 2, 3, 4, and 5 are connected in series by an optical transmission line 8 so that they can communicate with each other.

Further, the optical transmission line 8 is connected to each of the PCs 1
5 to 5, a backup PC 6 and a monitoring operation PC 7
Are connected. The backup PC 6 backs up the disconnector PC 1, the grounding device PC 2, the circuit breaker PC 3, the protection relay PC 4, and the disconnector PC 5 and is connected as shown by a dotted line in the figure, and among these plural PCs. When any one of the above is down, the backup PC 6 operates instead of the down PC, and the operation is continued without stopping the function of the entire system. That is, in this configuration, one backup PC 6 is provided for the five PCs 1 to 5, and the downed PC is backed up by the one backup PC 6.

A display 14 with a touch panel is connected to the monitoring operation PC 7, and the display 14 with the touch panel is for performing remote monitoring and operation of the system via the monitoring operation PC 7, and an optical transmission line. It is connected to each of the PCs 1 to 6 via 8, and by this, information is collected, extracted and referred to for system monitoring and control. The touch panel display 14 is configured to be able to input various information by touch operation.

In the power receiving and transforming equipment configured as described above,
Decentralization of monitoring, protection, control, etc., that is, function distribution, risk distribution, load distribution, regional distribution, etc., can be performed to improve reliability, expandability, and flexibility.

FIG. 2 shows a circuit configuration when the other main PCs 1 to 5 are backed up by the backup PC 6 shown in FIG. In the figure, a contact 17 and b
Input signals from the contacts 18 are simultaneously input to the digital input circuits 19 and 19 'of the main PCs 1 to 5 and the backup PC 6.
It is connected to (DI) and processed in the same way in both PCs. The digital input circuits 19 and 19 'are respectively composed of photocouplers 20 and 21 and 20' and 21 '.

The output signals similarly processed by both the main PCs 1 to 5 and the backup PC 6 are output from the digital output circuits 24 and 24 '(DI) composed of the transistor drive contact circuits 25 and 26 and 25' and 26 '. A via the switching contact of the alarm circuit 27, 27 '(ALM)
It is supplied to the control output circuit 22 and the b control output circuit 23, but when the main PCs 1 to 5 are normal, the main PC
When the output signals from 1 to 5 are output via the alarm circuit 27 and the main PCs 1 to 5 are in an abnormal state,
The alarm circuits 27, 27 'are activated and switched, whereby the output signal from the backup PC 6 is output via the alarm circuit 27', and the backup operation by the backup PC 6 allows the normal operation of the system to be continuously performed. In FIG. 2, 28 is a power source.

As shown in FIG. 1, one for a plurality of PCs
By backing up with one PC, the minimum number of P
It is possible to reduce the hardware cost while ensuring reliability with C.

FIG. 3 is a diagram showing the structure of a power receiving and transforming facility according to another embodiment of the present invention. The power receiving and transforming equipment shown in the figure is different from the embodiment shown in FIG. 1 in that one backup PC is provided in parallel with each main PC. That is, the power receiving and transforming equipment of FIG. 3 includes the disconnector 9, the grounding device 10, the circuit breaker 11, and the protection relay 1 of the power receiving and transforming system.
2. For each of the disconnector 13, PC1 for disconnector, PC2 for grounding device, PC3 for circuit breaker, PC for protection relay
4. Dispersing the disconnecting PCs 5 and providing backup PCs 61 to 65 in parallel for each of the main PCs 1 to 5 so that each of the main PCs 1 to 5 is backed up by each of the backup PCs 61 to 65. The respective PCs 1 to 5, 61 to 65 are connected to the optical transmission line 8, and the touch panel display 14 is further connected to the optical transmission line 8 via the monitoring operation PC 7 in the same manner as in FIG. There is.

In this way, by backing up each of the main PCs 1 to 5 with one backup PC, when each of the main PCs 1 to 5 goes down, the corresponding backup PC operates until the down main PC returns. It is possible to continue the operation without stopping the function of the entire system. By distributing the functions in this way, the hardware and software configurations are simplified, and since there is no mutual interference between PCs, there is no ripple even if a failure occurs, risk distribution is possible, and therefore reliability is improved. You can

FIG. 4 is a diagram showing the structure of a power receiving and transforming facility according to still another embodiment of the present invention. The power receiving and transforming equipment shown in the figure is a backup PC in addition to the backup PC.
Is provided and is tripled, and only the point that a backup PC 66 for backing up the backup PC 6 is further provided in the embodiment shown in FIG. 1 is different, and the other configuration operation is the same.

By thus providing the backup PC 66 with respect to the backup PC 6, even if the backup PC 6 goes down, the backup PC 6
6 allows the system to continue operating without stopping its function. In such a backup configuration, the number of PCs can be tripled, and the reliability can be further improved with a relatively reduced hardware cost.

FIG. 5 is a diagram showing the structure of a power receiving and transforming facility according to another embodiment of the present invention. As in the case of FIG. 4, the power receiving and transforming equipment shown in the same figure has a backup PC provided in addition to the backup PC, and is tripled. ~ 5
Backup PC 61-65
The difference is that it is configured to back up at 67.

In this way, six backup PCs 61 to 65 are provided, one for each of the main PCs 1 to 5.
By further backing up the data with a single backup PC, a highly reliable triple system can be achieved relatively economically.

FIG. 6 is a block diagram showing the configuration of the power receiving and transforming equipment according to still another embodiment of the present invention. The power receiving and transforming equipment shown in the figure includes a disconnector 9, a circuit breaker 11, and a protection relay 1.
2, a disconnector PC 81, a circuit breaker PC 82, a protection relay PC 83 provided for each of the disconnectors 13.
It is configured such that two PCs 84 for disconnecting switches are backed up in pairs. That is, the disconnecting switch PC 81 and the circuit breaker PC 82 are paired, cross-connected as shown by the dotted line, and the pair of PCs 81 and 82 are configured to back up each other, and the protection relay PC 83 and the disconnecting switch PC 84 are similarly configured. And are paired and cross-connected as shown by the dotted line.
3, 84 are configured to back up each other.

By backing up each other in this way, a dedicated PC for backup becomes unnecessary, and a highly reliable duplex system can be realized without increasing the number of PCs.

FIG. 7 is a diagram showing the structure of a power receiving and transforming facility according to still another embodiment of the present invention. In the power receiving and transforming equipment shown in the figure, one PC is provided for one line or one panel. That is, as shown in the figure, the disconnector 100, the circuit breaker 101, the current transformer 102, the disconnector 103
One line PC94 is provided for this one line P
A backup PC 95 is provided for C94, and a disconnector 104, a circuit breaker 105, a current transformer 106, and a disconnector 107.
2 line PC 93 is provided for
A backup PC 92 is provided for C93, and further, a disconnector 108, a grounding device 109, a circuit breaker 110, a current transformer 11
One bank PC97 is provided for one, and a backup PC96 is provided for this one bank PC97. Each of these PCs is connected to the optical transmission line 8 so that they can communicate with each other, and the touch panel display 1 is also provided via the monitoring operation PC 7.
4 is connected. Such a configuration can be relatively easily migrated from the conventional system by using the protection relay.

FIG. 8 is a diagram showing a backup circuit according to still another embodiment of the present invention. The backup circuit shown in the figure is provided with one backup PC for each of the main PCs 1 to 5 as shown in FIG. 3, and the two PCs of each pair of the main PC and the backup PC are always simultaneously operating. In such a configuration that two PCs are always operated, the operation is continued by the other one PC only when one PC is down.

The backup circuit shown in FIG. 8 is similar to the backup circuit shown in FIG.
The connection to 7'is connected in parallel,
The other circuit configuration is the same as that shown in FIG.

When the backup circuit shown in FIG. 8 is used, since two PCs are always operated, malfunctions can be eliminated and a highly reliable duplex system can be achieved.

It is also preferable to apply to the system components which integrate protection relays, control and monitoring functions. As shown in each of the above-described embodiments, by disposing a plurality of PCs for each device of the power receiving and transforming system, the functions can be distributed according to each function, the processing capacity of each PC can be leveled, and the software can be leveled. Load distribution that can reduce the amount, expandability of the system, and robustness that failure does not spread to the whole system,
That is, it is possible to achieve the risk distribution and the regional distribution in which the wiring cost can be reduced by the discrete treatment of the stations.

The decentralization of the PCs makes it easier to package the hard circuit, and rationalizes the design such as shortening the time from specification determination to shipment. Furthermore,
A serial transmission line consisting of an optical transmission line can significantly reduce wiring, and it is possible to construct a flexible system that is simple, highly expandable, and can realize a system with high functionality and high performance.

Furthermore, by changing the hard sequence to a PC, that is, by changing it to a software, the sequence can be changed easily, the specification can be easily changed, and the wiring can be reduced by changing the software.

Auxiliary relays are reduced by taking in all signals such as interlock signals, eliminating troubles such as contact failure, chattering and noise generation due to relay contacts, greatly improving reliability and labor saving in maintenance and inspection. Can be achieved.

By using the display 14 with a touch panel for driving and monitoring, only the really necessary information can be easily and quickly extracted from the aggregated information, and an accurate judgment can be made by referring to this information. It is possible to realize a human interface system that aggregates, extracts, and refers to information such as defeating.

Also, by backing up the PC with the backup PC, even if the PC goes down,
Operation can be continued without stopping the function of the system,
The reliability can be improved.

[0037]

As described above, according to the present invention,
A plurality of programmable controllers are arranged in a distributed manner for each device of the power receiving and transforming facility, each device is controlled by the plurality of programmable controllers, and the programmable controllers are connected in series by a serial transmission line, and between the programmable controllers. As they are able to communicate with each other, high performance, high performance,
It is possible to achieve intelligent control such as distributed control, save labor from design to operation and maintenance, and achieve cost reduction. Specifically, it is possible to easily change the software, save maintenance work, and significantly reduce wiring man-hours.

Further, according to the present invention, a monitoring operation programmable controller and a display device with a touch panel are provided to perform remote control and monitoring of the power receiving and transforming equipment, input and display of information, and when a plurality of programmable controllers are abnormal. It has a programmable controller for backup to cope with it, and normal operation is continued by the programmable controller for backup even when the programmable controller is abnormal.
The reliability can be greatly improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a power receiving and transforming facility according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a backup circuit when the other main PCs 1 to 5 are backed up by the backup PC shown in FIG.

FIG. 3 is a diagram showing a configuration of a power receiving and transforming facility according to another embodiment of the present invention.

FIG. 4 is a diagram showing a configuration of a power receiving and transforming facility according to still another embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of a power receiving and transforming facility according to another embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of a power receiving and transforming facility according to still another embodiment of the present invention.

FIG. 7 is a diagram showing a configuration of a power receiving and transforming facility according to still another embodiment of the present invention.

FIG. 8 is a diagram showing a backup circuit according to still another embodiment of the present invention.

[Explanation of symbols]

 1 PC for disconnector 2 PC for grounding device 3 PC for circuit breaker 4 PC for protection relay 5 PC for disconnector 6 Backup PC 7 Monitoring operation PC 9, 13 Disconnector 10 Grounding device 11 Circuit breaker 12 Protection relay 14 Touch panel display

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Watanabe No. 1 Toshiba-cho, Fuchu-shi, Tokyo Toshiba Corporation Fuchu factory

Claims (3)

[Claims] 1. A plurality of programmable controllers distributedly arranged for each device so as to control each device of the power receiving and transforming facility, and a plurality of programmable controllers for enabling mutual communication between the plurality of programmable controllers. A power receiving and transforming facility having a serial transmission line connected in series. 2. A monitoring operation programmable controller, which is connected to the plurality of programmable controllers via the serial transmission line, and performs remote control and monitoring of the power receiving and transforming equipment via the plurality of programmable controllers, and the monitoring operation programmable controller. The power receiving and transforming equipment according to claim 1, further comprising a display device with a touch panel that is connected to the device and that inputs and displays information. 3. The power receiving and transforming equipment according to claim 1, further comprising a backup programmable controller for coping with an abnormality of the plurality of programmable controllers.