JP2848302B2 - Power receiving and distribution equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called operation-linked type of existing switchgear equipment in which alarms for a group of switchgear failures and operations such as stoppage thereof are concentrated in one place to achieve interlocking operation in the event of a failure. The present invention relates to a power receiving and distributing facility in which an operating means for individually stopping a failure alarm or the like is separately provided and a switchgear on an extension side capable of performing an operation at the time of failure in a so-called self-contained system.

[0002]

2. Description of the Related Art Conventionally, power receiving and distribution equipment comprising a large number of switchgears is roughly divided into operation-linked equipment and self-contained equipment described below.

(I) Equipment linked to operation In this equipment, each of a group of switch gears
As a function related to the failure notification, it has only a failure display and an alarm instruction function of detecting the occurrence of an individual failure and displaying a blink (flicker) and outputting an alarm instruction.

[0004] Then, a predetermined one of the switchgears,
An alarm device (alarm means) which operates in response to an alarm command of each switchgear and generates an alarm, and a common operation switch (operation means) which stops the display / alarm of a failure of each switchgear are provided.

[0005] Therefore, the display of the failure of each switchgear
The alarm can be stopped by operating a single switch, so that the operability is excellent, and the number of parts is small, and there is also an advantage of being inexpensive and compact.

(Ii) Self-contained equipment In this equipment, only an alarm device is used in common for each switchgear, and in addition to the above-mentioned fault indication and alarm command functions, each switchgear has a fault indication / An operation switch for stopping the alarm is provided. Therefore, there is an advantage that the operation switch can be operated to display the failure of each switch gear and stop the alarm.

[0007]

In the case of the above-mentioned conventional power receiving and distributing equipment, in order to increase the scale of the equipment and the like, when adding switch gear, a switch gear of the same type as the existing switch gear must be used. Therefore, the existing advantages (features) cannot be utilized.

In other words, if the existing switchgear equipment is an operation-linked type equipment, simply adding this switchgear and one or more self-contained switchgears to increase the number of switchgears will result in an additional self-contained switchgear. As for the switchgear of the shape, the operation interlock cannot be achieved, and the characteristics (operation interlock) of the existing equipment cannot be utilized.

[0009] For this reason, conventionally, even if a switchgear equipment of an operation interlocking type (existing equipment) and a self-contained switchgear are combined, it is not possible to expand the equipment scale without impairing the respective features. is there.

According to the present invention, when the existing switchgear equipment of the operation interlocking type is combined with the self-contained switchgear to expand the equipment scale, the operation interlocking of the whole operation can be achieved.
An object of the present invention is to make it possible to individually operate the added self-contained switchgear and to expand the equipment scale without deteriorating the features of each switchgear.

[0011]

In order to solve the above-mentioned problems, in the case of the power receiving and distributing equipment of the present invention, the failure indication,
One of a group of switch gears having an alarm command function is provided with a common alarm means for generating a fault alarm by operating in accordance with the alarm command of each switch gear, and for displaying and alarming the failure of each switch gear. Operation-linked switchgear equipment provided with common operation means on the equipment side shared with the stop operation, individual failure indication, alarm command function, failure indication /
A switchgear on the extension side having an operation means for stopping the alarm, and an alarm command and an alarm stop instruction for the switchgear on the extension side are transmitted to the alarming means, and the first means for emitting and stopping the alarming means is provided.
Transmission line means, common operation means on the extension side, which is provided in the predetermined one switchgear of the switchgear equipment, and which is shared by the operation for indicating the failure of the switchgear on the extension side and stopping the alarm. The operation output of the common operating means on the side is transmitted to the switchgear on the extension side, the display of the failure of this switchgear, the alarm instruction is stopped, and the alarm stop instruction is generated.
Transmission path means.

Therefore, the first and second transmission path means are interposed between the existing operation-linked type switchgear equipment and the extension-side self-contained switchgear, and the extension-side self-contained switchgear is provided. Is supplied to the common alarm means of one predetermined switchgear of the switchgear equipment via the first transmission path means, and this alarm means is provided for each switchgear of the switchgear equipment and the switchgear on the additional side. It is shared by the alarms.

Further, the operation output of the additional common operation means provided on the predetermined one switch gear together with the common operation means on the equipment side is transmitted to the additional switch gear via the second transmission path means. Then, the display of the failure of the switchgear and the warning command are stopped.

At this time, an alarm stop command is generated in the switchgear, the command is transmitted to the predetermined one switchgear via the first transmission path means, and the alarm is also stopped. On the other hand, the display of the failure, the warning command, and the warning of the warning means are also stopped by the individual operation means of the switchgear on the additional side.

[0015] Therefore, the operation-linked switchgear equipment and the self-contained switchgear on the extension side are combined to expand the scale of the equipment without deteriorating the features of the switchgear equipment and the switchgear on the extension side. .

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the overall configuration, which comprises an existing operation-linked switchgear equipment A and an additional equipment B connected to the equipment A.

The existing switchgear equipment A is shown in FIG.
And a group of switch gears 1a, 1
b, 1c,..., 1n are indications of failures via the respective failure detection switches (normally open) 2 between the positive and negative power supply lines P and N of 100V DC of the integrated circuit unit.
A failure display circuit 3 having a command function is provided, and a failure indicator lamp 4 having a light emitting diode configuration that is turned on and blinks according to a command from the failure display circuit 3.

The first switchgear 1a forms a predetermined switchgear, and a circuit unit of the switchgear 1a has a common alarm 5 and a stop / blink stop which forms common operating means on the equipment side. In addition to the operation switches 6, 7, and 8 for displaying and restoring, the operation switches 9, 1 for stopping alarm, stopping blinking, and returning to display, which form common operating means on the extension side.
0, 11, a plurality of auxiliary relays 12-17, and their auxiliary contacts 12a, 12b, ..., 17a, 17b.

The output of the alarm command from the failure display circuit 3 of each of the switch gears 1a to 1n is supplied to the auxiliary relay 12, and the auxiliary contacts 14a, 15a, 17b output alarm stop, blink stop, and display return contact signals. Switchgear 1a-1n
Is supplied to the failure display circuit 3.

Next, as shown in FIG.
A first switchgear 18a on the first extension side, which does not require display of a fault or an alarm on the busbar communication panel or the like, is connected to the switchgear 1a via a cable. Side switch gears 18b, 18
, 18n are connected by cable.

The switchgear 18a transmits a signal from the switchgears 18b to 18n to the switchgear 1a in order to enable the switchgear 1a to perform an operation such as a warning of a failure of the switchgears 18b to 18n and a stop thereof. An integrated coupling circuit unit 19a having one transmission path means and, conversely, a second transmission path means for transmitting a signal is provided, and the circuit unit 19a is connected to the switch gear 1a and the switch gears 18b to 18n. Intervene in between.

This circuit unit 19a includes a switchgear 1
a power supply device 20 connected to the positive and negative power supply lines P and N
The device 20 has an additional switchgear 18
A 12V DC power supply required as circuit power supplies a to 18n is formed, and a 12V DC power supply between the positive and negative power supply lines P 'and N' is supplied to the switchgears 18b to 18n.

The circuit unit 19a has a plurality of auxiliary relays 21 to 27 such as an auxiliary relay 21 which is energized and excited by an OR output of an alarm command of the switch gears 18b to 18n.
And their auxiliary contacts 21a, 21b,..., 27a.

On the other hand, the second and subsequent switch gears 18b-
18n is a switchgear having a function of displaying and operating a self-contained fault, and the integrated circuit units 19b, 19c,..., 19n having the same configuration are connected between the positive and negative power supply lines P 'and N'. A failure display circuit 29 having a function of displaying a failure and issuing an alarm command via a failure detection switch (normally open) 28 is provided for each.
The auxiliary relay 31 is energized and energized only when the display / alarm stop operation is permitted by the operation inhibition output of the failure indicator circuit 30 and the failure display circuit 29, which are turned on and off by the display output of the light emitting diode, and the auxiliary contact 31a. Having.

Further, the circuit units 19b to 19n are individually provided with operating means for stop operation, such as alarm stop, alarm stop, and so on, in order to be able to individually perform a failure display and an alarm stop operation.
Operation switches 32, 33, 34 for stopping blinking and returning to display
Is provided. 2 and 3 and the symbols in the symbols of the auxiliary relays 12, 13,... Are sequence control codes.

In the switchgear equipment A,
The configuration is such that the operation switches 9 to 11, the auxiliary relay 13, and the auxiliary contact 13a of the switch gear 1a are added to the conventional equipment.

In addition, the extension equipment B has a circuit unit 19a, and the switch gears 18b to 18n are connected to the circuit unit of the switch gear 1a via the circuit unit 19a.

The auxiliary relay 1 of the switchgear 1a
3 and the auxiliary contact 13a thereof, the auxiliary relay 21 of the switchgear 18a and the auxiliary contact 21b thereof form a first transmission path means, and the operation switches 9 to 11 of the switchgear 1a are formed.
A signal line or the like connecting the switch and the auxiliary relays 25 to 26 of the switchgear 18a forms a second transmission path means.

Next, a series of operations and operations from the occurrence of a failure to the display of the failure and the stop of the alarm will be described with respect to a case where a failure occurs on the switchgear equipment A side and a case where a failure occurs on the extension equipment B side. Will be described separately.

(1) When a failure occurs in any of the switch gears 1a to 1n of the switch gear equipment A Indication / alarm of a failure accompanying the occurrence of a failure In this case, a failure detection contact of the switch gear 1a to 1n in which the failure has occurred 2 is closed, and the fault signal lamp 4 of the switch gears 1a to 1n is turned on by the contact signal via the fault signal circuit 3.

Further, the failed switchgear 1a
The alarm display command 3 generates an alarm command, the auxiliary relay 12 of the switchgear 1a is energized and excited by this command, the auxiliary contact 12a of the relay 12 is closed, and the alarm 5 is activated (sounds). , An alarm occurs.

Further, the auxiliary contact 12b of the auxiliary relay 12 is closed, and the auxiliary relay 15 for flicker control is energized and excited.
When the auxiliary contact 15a of the relay 15 is opened and the failure display circuit 3 of the switch gear 1a-1n in which the failure has occurred is commanded to blink, the failure indicator lamp 4 of the switch gear 1a-1n blinks.

At this time, the auxiliary relay 16 and the auxiliary relay 15 are energized and excited, and the auxiliary contacts 16a, 16b
Are closed, the auxiliary relays 15 and 16 are self-energized through the operation switch 7 and the auxiliary contact 16a by closing the auxiliary contact 16a, and the failure indicator 4 continues to blink.

When the auxiliary contact 16b is closed, the auxiliary relay 17 is energized and excited, and the auxiliary contacts 17a, 17b
Is closed and display return (display stop) is enabled.

Stopping the display / warning of the fault Next, when the display / warning of the fault is stopped, the operation switches 6, 7, 8 of the switch gear 1a of the automatic reset type are operated in this order.

When the operation switch 6 is operated and the switch 6 is closed, the auxiliary relay 14 is energized and energized by the operation output of the alarm stop command, the auxiliary contact 14a of the relay 14 is opened, and a failure occurs. An alarm stop is instructed to the failure display circuit 3 of the switch gears 1a to 1n, and the alarm command of the failure display circuit 3 is turned off.
a, the energization of the auxiliary relay 12 is stopped, and the auxiliary contact 12
a is released and the alarm of the alarm device 5 stops.

Next, when the operation switch 7 is operated and the switch 7 is opened, the energization of the auxiliary relays 15 and 16 is stopped on condition that the auxiliary contact 12a is opened, and the auxiliary contact 15
switch gears 1a to 1n in which a failure has occurred due to opening of a
Is commanded as a first display stop command to the failure display circuit 3, and the switchgears 1a to 1g are determined based on this command.
The 1n fault indicator light 4 stops blinking.

Further, when the operation switch 8 is operated and the switch 8 is opened, the energization of the auxiliary relay 17 is stopped on condition that the auxiliary contact 16b is opened, and the auxiliary contact 17b
Lighting stop is commanded as a second display stop command to the fault display circuit 3 of the switch gears 1a to 1n in which a fault has occurred due to the opening of the switch gears 1a to 1n.
The n failure indicator lights 4 are turned off on condition that the failure detection contact 2 is opened and returned.

Therefore, the alarm 5 is connected to each switchgear 1
Operation switches 6 to 8 are used in common for alarms for failures a to 1n.
Are shared for the display and alarm stop operation of the failure of each of the switchgears 1a to 1n, and the alarm of the failure of the switchgear equipment A and the display / alarm stop operation thereof can be performed at one place, and the operation is linked.

(2) When a failure occurs in any of the switch gears 18b to 18n of the extension equipment B, for example, the switch gear 18b Indication / alarm of the failure accompanying the failure In this case, the failure of the switch gear 18b in which the failure has occurred The detection contact 28 is closed, and a failure indicator light 30 of the switchgear 18b is transmitted by the contact signal via a failure display circuit 29.
Lights up.

Further, the failure display circuit 29 of the switch gear 18b generates an alarm command, and the auxiliary relay 21 of the switch gear 18a is energized and excited by this command, and the auxiliary contacts 21a and 21b are closed.

When the auxiliary contact 21b is closed, an alarm command for the switch gear 18b is transmitted to the auxiliary relay 13 of the switchgear 1a, and the auxiliary relay 13 is energized and excited to close the auxiliary contact 13a.

The auxiliary contact 13a is provided in parallel with the auxiliary contact 12a to form a so-called OR circuit.
When 3a is closed, the alarm 5 is activated and an alarm is generated, as in the case where the auxiliary contact 12a is closed.

The auxiliary relay 22 for blinking control provided on the switch gear 18a by closing the auxiliary contact 21a.
The auxiliary relay 23 for self-holding is energized and excited, and the opening of the auxiliary contact 22a instructs the failure display circuit 29 of the switchgear 18b to blink, and the failure indicator lamp 30 blinks.

At this time, the auxiliary contact 23 of the auxiliary relay 23
a is closed, the energization of the auxiliary relays 22 and 23 is self-maintained, and the failure indicator 30 continues to blink. In addition, the auxiliary contact 23b of the auxiliary relay 23 is closed, the auxiliary relay 24 is energized and excited, the auxiliary contacts 24a and 24b are closed, and the display is allowed to return.

Further, based on the closing of the auxiliary contact 24b,
The failure display circuit 29 of the switch gear 18b outputs an individual operation permission command, and the auxiliary relay 31 is energized and excited by this command to close the auxiliary contact 31a, thereby causing the failure of the failed switch gear 18b due to the individual operation. Display and warning stop operation are enabled.

Indication of Failure / Stopping of Alarm (i) In Case of Interlocking with Operation of Switchgear 1a In this case, the operation switches 9, 10, and 11 of the automatic reset type provided on the switchgear 1a are operated in this order. .

When the operation switch 9 is operated and the switch 9 is closed, the auxiliary relay 25 of the switch gear 18a is energized and energized by the operation output of the alarm stop, and the auxiliary contact 25a is opened, and the switch gear 18b is opened.
An alarm stop command is generated in the failure display circuit 29.

With this command, the alarm command of the failure display circuit 29 is turned off, the energization of the auxiliary relay 21 of the switch gear 18a is stopped, and the auxiliary contacts 21a and 21b are opened.

When the auxiliary contact 21b is opened, an alarm stop command for the switchgear 18b is transmitted to the switchgear 1a, the energization of the auxiliary relay 13 is stopped, the auxiliary contact 13a is opened, and the alarm of the alarm 5 is activated. Stop.

Next, when the operation switch 10 is operated and the switch 10 is closed, a flashing stop command is generated as a first display stop command, and the auxiliary relay 26 of the switch gear 18a is energized and excited by this command. The auxiliary contacts 26a are opened, and the energization of the auxiliary relays 22, 23 is stopped on condition that the auxiliary contacts 21a are opened.

The auxiliary contact 22a of the auxiliary relay 22
Is released, the blinking stop command is issued to the failure display circuit 29 of the switchgear 18b, and the failure indicator lamp 30 stops blinking.

Further, when the operation switch 11 is operated and the switch 11 is closed, a turn-off command is issued as a second display stop command.
a of the auxiliary relay 27 is energized, the auxiliary contact 27a is opened, and the self-holding energization of the auxiliary relay 24 is released.
The auxiliary contacts 24a and 24b of the auxiliary relay 24 are opened.

When the auxiliary contact 24b is opened, a command to turn off the light is issued to the failure display circuit 29 of the switchgear 18b.
In response to this command, the failure indicator lamp 30 is turned off on condition that the failure detection contact 28 is opened and restored.

When the failure indicator lamp 30 is turned off, the permission command for the individual operation of the failure display circuit 29 is also turned off, the energization of the auxiliary relay 31 is stopped, and the auxiliary contact 31a is opened.
Return to the original state.

(Ii) When the individual operation of the failed switch gear 18b is performed In this case, the operation switches 32, 33, and 34 of the automatic reset type of the switch gear 18b are operated in this order.

When the operation switch 32 is operated and the switch 32 is closed, an individual alarm stop command is generated. At this time, the auxiliary contact 31a is closed.
The auxiliary relay 25 is energized and excited via the auxiliary contact 31a and the operation switch 32, and by this excitation, an alarm stop command is transmitted to the switchgear 1a in the same manner as when the operation switch 9 is operated. Stop.

Next, when the operation switch 33 is operated and the switch 33 is closed, an individual flashing stop command is generated as a first display stop command, and the command is transmitted via the auxiliary contact 31a and the operation switch 33. Auxiliary relay 26
Is energized, and the excitation stops the failure indicator light 30 of the switchgear 18b in the same manner as when the operation switch 10 is operated.

Further, when the operation switch 34 is operated and the switch 34 is closed, an individual light-off instruction is generated as a second display stop instruction, and the auxiliary contact 3
1a, the auxiliary relay 27 is energized and energized via the operation switch 34, and the failure indicator light 30 of the switchgear 18b is operated in the same manner as when the operation switch 11 is operated by this excitation.
Turns off.

Therefore, the alarm 5 is also used as an alarm for the switchgears 18b to 18n on the extension side, and the display of the failure of the switchgears 18b to 18n and the stop of the alarm are performed.
The operation can be performed by either the operation of the common operation switches 9 to 11 provided on the switchgear 1a of the switchgear equipment A or the operation of the respective operation switches 32 to 34.

For this reason, the additional switchgears 18a to 18a
With respect to the entire power receiving and distribution facility including 18n, a failure alarm and a display / alarm stop operation thereof can be performed by one switchgear facility A, that is, the switchgear 1a.
Operation interlocking can be achieved.

In addition, the additional switchgears 18b to 18b
With regard to 8n, the failure display / warning can be stopped by individual operation which is a feature of the self-contained type. Therefore, the features of the operation interlocking type and the self-contained type can be utilized together to integrate them, and the equipment can be expanded.

The additional switchgears 18b to 18b
n, an auxiliary relay 31 and an auxiliary contact 31a thereof are provided, and only when a failure occurs in each of the switchgears 18b to 18n, the operation of each of the operation switches 32 to 34 is received. The operation of the operation switches 32 to 34 of the switchgear on the other extension side does not cause the display / warning of the failure to be stopped by mistake.

The circuit unit 19a includes, for example,
It may be provided in any of the switch gears 18b to 18n, may be provided separately from the switch gears 18a to 18n, or may be provided in the switch gear 1a.

The power supply 20 of the circuit unit 19a
Can be omitted when the auxiliary relays 21, 22, ... on the extension side operate at the same operating voltage as the auxiliary relays 12, 13, ... on the switchgear equipment A side.

Further, each of the auxiliary relays 12, 13,.
Instead of 1, 2,..., It may be formed by an electronic circuit such as a logic circuit, or may be formed by software of a computer. In that case, the circuit configuration and the like are not limited to those shown in FIGS. Absent. And it goes without saying that the number of switch gears on the extension side may be one.

[0067]

The present invention has the following effects. First and second transmission path means are interposed between the operation-linked switchgear equipment A and the so-called self-contained switchgears 18b to 18n on the extension side. A common alarm means (alarm 5) and common operation means (operation switches 6, 7, 8) on the equipment side and a common operation means (operation switches 9, 10, 11) on the extension side are provided in the switchgear 1a. Therefore, the alarm of the failure of the additional switchgears 18b to 18n can be issued by the common alarming means of the switchgear 1a.

The switch gears 18b to 18 on the extension side
The display of the n failure and the stop of the alarm can be performed by either the operation of the common operation means on the extension side or the operation of the respective operation means (operation switches 32, 33, 34) of the switchgears 18b to 18n. .

Therefore, an alarm for failure of the entire equipment including the switchgear on the extension side and a display / alarm stop operation thereof are performed in one operation.
(Switch gear 1a), and the overall operation can be interlocked.
18c to 18c, the failure display / alarm can be stopped by each operation, and the operation-linked switchgear equipment A and the self-contained extension-side switchgears 18b to 18n are combined without deteriorating the features of both. Integrally, the scale of the power receiving and distribution equipment can be expanded.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of one embodiment of the present invention.

FIG. 2 is a detailed circuit block diagram of the switchgear equipment of FIG.

FIG. 3 is a detailed circuit block diagram of the extension equipment of FIG. 1;

[Description of Signs] A Switchgear Equipment 1a-1n Switchgear of Switchgear Equipment 5 Alarm 6,7,8 Operation Switch Forming Common Operation Means on Equipment Side 9,10,11 Common Operation Means on Extension Side 18a to 18n Switchgear of extension equipment 19a Circuit unit 31, 32, 33 forming first and second transmission path means Operation switch of switchgear of extension equipment

Continuation of the front page (56) References JP-A-59-106805 (JP, A) JP-A-62-141905 (JP, A) JP-A-5-300615 (JP, A) Jpn. , U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H02B 1/24 G08B 21/00 H02B 3/00 H02B 7/06 H02B 11/00-11/22

Claims (1)

(57) [Claims] 1. A common alarm which is activated by a warning command of each switchgear to generate a failure alarm on a predetermined one of a group of switchgears each having a function of indicating a failure and issuing a warning command. Means, operation-linked switchgear equipment provided with common operation means on the equipment side, which is used for displaying the failure of each switchgear and stopping the alarm, and individually displaying the failure, the function of the alarm command, A switchgear on the extension side having an operation means for displaying and stopping the alarm of the above, and an alarm command and an alarm stop instruction for the switchgear on the extension side are transmitted to the alarm means to generate and stop the alarm means. A transmission path means, and a failure indication of the switchgear on the additional side, which is provided in the predetermined one switchgear of the switchgear equipment.
An operation output of the common operation means on the extension side shared with the operation for stopping the alarm, and an operation output of the common operation means on the addition side is transmitted to the switchgear on the expansion side, and an indication of failure of the switchgear on the addition side is displayed. Power receiving and distribution equipment, comprising: a second transmission path unit that stops an alarm command and generates the alarm stop command.