CN219179519U

CN219179519U - Broadcasting station power failure alarm device

Info

Publication number: CN219179519U
Application number: CN202321024325.4U
Authority: CN
Inventors: 陈涛; 袁克旻; 星佳财; 张丰良; 祁昌元
Original assignee: National Radio And Television Administration 916
Current assignee: National Radio And Television Administration 916
Priority date: 2023-05-04
Filing date: 2023-05-04
Publication date: 2023-06-13
Anticipated expiration: 2033-05-04

Abstract

The utility model discloses a power failure alarm device of a broadcasting station, which comprises a signal acquisition module, a main controller, an alarm display and an audible alarm; the signal acquisition module, the alarm display and the audible alarm are respectively connected with the main controller; the signal acquisition module is connected with a low-voltage relay and a zero-sequence voltage relay, and the low-voltage relay and the zero-sequence voltage relay are connected with a high-voltage line through a voltage transformer; the signal acquisition module is connected with a high-voltage circuit breaker in the high-voltage switch cabinet and a low-voltage circuit breaker in the low-voltage switch cabinet; the signal acquisition module is connected with a transformer temperature controller connected with the transformer; the alarm device realizes unified monitoring of the power failure problem of the broadcasting station, is convenient for on-duty maintenance staff to quickly locate the failure point, understand the failure reason, shortens the failure removal time, avoids the longer interruption of the broadcasting signal and ensures the normal operation of the broadcasting station.

Description

Broadcasting station power failure alarm device

Technical Field

The utility model relates to the technical field of power failure alarm, in particular to a broadcasting station power failure alarm device.

Background

The broadcasting station has the advantages of more transmitters, high transmitting power, high power supply voltage level and more complicated power supply system because of bearing the national sound transmission task. The power supply load is a primary load, the requirement on the power supply reliability is high, the power is supplied by a two-way power supply according to the 'broadcast television safety broadcasting management rule', and the number of power supply line loops of the station transformer substation is also high due to the fact that part of station transmitter rooms are more. When a circuit breaker tripping operation or a circuit voltage loss fault occurs in a certain feeder line, an operator on duty can determine the nature and position of the fault in the first time according to a conventional power fault audible alarm signal designed by a power standard. The power failure can not be timely relieved, and if the power failure is not timely solved for a broadcasting station, the broadcasting signal can be interrupted (when standby power is exhausted), so that normal listening and watching of audiences are affected.

Disclosure of Invention

Aiming at the problem that the determination of the nature and the position of the power failure of the broadcasting station is difficult in the prior art, the utility model provides the power failure alarm device for the broadcasting station, which alarms the failure reason and the failure point, is convenient for an maintainer to locate the failure point in time, knows the failure reason, shortens the failure removal time, avoids the longer interruption of a broadcasting signal and ensures the normal operation of the broadcasting station;

the utility model provides a broadcasting station electric power failure alarm device, includes signal acquisition module, main control unit, alarm display, audible alarm; the signal acquisition module, the alarm display and the audible alarm are respectively connected with the main controller; the switching value input end of the signal acquisition module is connected with a low-voltage relay and a zero-sequence voltage relay, and the low-voltage relay and the zero-sequence voltage relay are connected with a high-voltage line through a voltage transformer; the switching value input end of the signal acquisition module is connected with a high-voltage circuit breaker in the high-voltage switch cabinet and a low-voltage circuit breaker in the low-voltage switch cabinet; the switching value input end of the signal acquisition module is connected with a transformer temperature controller connected with the transformer.

Preferably, the alarm display is a liquid crystal display, and the liquid crystal display is connected with the main controller through an HDMI interface; and displaying the fault position and the cause through the video file.

Preferably, the zero sequence voltage relay is arranged at the opening triangle of the secondary side of the voltage transformer, and the zero sequence voltage which can appear at the opening triangle when the line is grounded or insulated to descend is utilized to monitor the grounding or insulated descending fault of the high-voltage line.

Preferably, the switching value input end of the signal acquisition module is respectively connected with a normally closed auxiliary contact of the high-voltage circuit breaker in the high-voltage switch cabinet and a normally closed auxiliary contact of the low-voltage circuit breaker in the low-voltage switch cabinet.

Preferably, the signal acquisition module is connected and communicated with the main controller through an RS 485/RS 232/Ethernet interface; the audible alarm is connected with the main controller through an AUX interface;

preferably, the alarm display comprises a display controller and a fault display panel, wherein the fault display panel is provided with a plurality of lamp plates with fault cause and fault position information; each lamp plate is connected with the output end of the display controller respectively; the display controller is connected with the main controller through an RS485 interface.

Compared with the prior art, the utility model has the following beneficial effects:

the alarm device realizes unified monitoring of the power failure problem of the broadcasting station, can prompt the operator on duty in time when the broadcasting station fails, is convenient for the operator on duty to quickly locate the failure point, knows the failure reason, shortens the failure removal time, avoids the longer interruption of the broadcasting signal and ensures the normal operation of the broadcasting station.

Drawings

Fig. 1 is a construction view of a first embodiment of a broadcasting station power failure warning apparatus of the present utility model;

FIG. 2 is a construction view of a second embodiment of a broadcast station power failure warning apparatus of the present utility model;

FIG. 3 is a circuit diagram of a fault display panel and a display controller in a second embodiment of the present utility model;

FIG. 4 is a circuit diagram showing the acquisition of a power line voltage loss and ground fault signal in a power failure alarm device of a broadcasting station according to the present utility model;

fig. 5 is a circuit diagram of a fault signal acquisition circuit of a high-voltage cabinet interrupt circuit breaker of the power fault alarm device of the broadcasting station.

Detailed Description

The drawings in the embodiments of the present utility model will be combined; the technical scheme in the embodiment of the utility model is clearly and completely described:

as shown in fig. 1, in a first embodiment of the present utility model, a broadcast station power failure alarm device includes a signal acquisition module 1, a main controller 2, an alarm display, and an audible alarm 4;

wherein the alarm display is a liquid crystal display 3; the switching value input end of the signal acquisition module 1 is connected withThe low-voltage relay 7 and the zero-sequence voltage relay 8 are connected, and the low-voltage relay 7 and the zero-sequence voltage relay 8 are connected with the high-voltage line 5 (35 kV or 10 kV) through the voltage transformer 6; in specific implementation, as shown in fig. 4, when the high-voltage bus is out of voltage, the secondary side voltage of the bus voltage transformer is zero, and a low-voltage relay 7 (1 KV) is installed on the secondary side, so that the low-voltage relay 7 acts when the line is out of voltage, a movable contact is closed, and a generated switching value signal is input to the signal acquisition module 1; zero sequence voltage relay 8 (1 KV) is arranged at the triangle position of the secondary side opening of a bus or line voltage transformer ₀ ) The zero sequence voltage of 3U can be generated at the opening triangle part when the line is grounded or bus insulation is lowered ₀ The size range (0-100V) can lead the zero sequence voltage relay to be 1KV ₀ The action, the closing contact is closed, and the generated switching value signal is input to the signal acquisition module 1. Monitoring of voltage loss, grounding or bus insulation drop faults of the high-voltage line is achieved;

the switching value input end of the signal acquisition module 1 is connected with a high-voltage circuit breaker 12 in the high-voltage switch cabinet 9 and a low-voltage circuit breaker 13 in the low-voltage switch cabinet 10; in particular, as shown in fig. 5, when a high-voltage breaker 12 (high-voltage breaker) in a high-voltage switch cabinet 9 connected to a transmitter power supply terminal in a power substation trips, a normally-closed (movable-breaking) contact QF of the breaker ₂ The high-voltage switch cabinet 9 is connected, and the generated switching value signal is input to the signal acquisition module 1, so that the accident tripping of the high-voltage switch cabinet 9 is monitored; the tripping monitoring means of the low-voltage switch cabinet 10 is the same as that of the high-voltage switch cabinet;

the switching value input end of the signal acquisition module 1 is connected with a transformer temperature controller 14 connected with a transformer 11; when the method is implemented, the normally open contact of the alarm output relay of the temperature controller of the transformer is connected with the normally open contact of the alarm output relay as a sampling point, and when the temperature of the transformer is too high, the normally open contact of the alarm output relay acts, and a switching signal is input to the signal acquisition module 1;

the signal acquisition module 1 can adopt a PLC, the signal acquisition module 1 is communicated with the main controller 2 in a connecting way, and each path of switching signals are input into the main controller 2, wherein the main controller 2 can adopt an industrial personal computer, the communication interface can adopt an RS485\RS 232\Ethernet interface, wherein the RS485 interface is optimized, the cost is low relative to the Ethernet interface, and the transmission distance is long relative to the RS232 interface; the liquid crystal display 3 is connected with the main controller 2 through an HDMI interface, and the liquid crystal display 3 can adopt a common LCD liquid crystal display screen; the audible alarm 4 is connected with the main controller 2 through an AUX interface;

in specific implementation, the liquid crystal display 3 is divided into m x n square grids by a computer software technology, and the number of dividing modes is determined according to field requirements; each square fills out a fault property, position and edits into a Chinese character, which is equivalent to m x n video files (optical character cards). The "light word" is numbered in a left to right, top to bottom order.

In addition, the content of the video file is converted into an MP3 format audio file by using word conversion voice software, or is manually recorded into an MP3 format voice file, and the MP3 format audio file is stored in a singing folder of an audio database of a main controller and strictly corresponds to each number of the optical character plate, such as a number A1.MP3 of 35kV fishing nine line decompression; "35kV fishing nine line ground" number A2.MP3; … … "standby 7" a40.mp3.

When an accident occurs, the fault parameters are converted into the switching value digital quantity to start the audio and video files stored in advance, so that the image and voice alarm is realized, and the operator on duty is timely reminded of what nature of the fault and where the fault position is. The on-duty maintainer can conveniently and timely locate the fault point, know the fault reason, shorten the fault removal time, avoid the broadcast signal to be interrupted for a long time, and ensure the normal operation of the broadcasting station.

As shown in fig. 2 and 3, in a second embodiment of the present utility model, unlike the embodiment, the alarm display includes a display controller 15 (PLC) and a fault display board 16, and a plurality of lamp boards 17 with fault cause and fault location information are disposed on the fault display board 16; each lamp plate 17 is connected with the output end of the display controller 15; the display controller 15 is connected with the main controller 2 through an RS485 interface; after receiving the switching value information of the related faults, the main controller 2 controls the corresponding lamp plate to be lighted; compared with the first embodiment, the alarm display can be separately arranged with the main controller 2 according to the requirement by utilizing the longer transmission distance of the RS485, or a plurality of alarm displays are respectively arranged at different places by utilizing the RS485 bus, so that the fault information is convenient to acquire.

The foregoing description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art should be able to apply equivalents and modifications according to the technical scheme and the modified concept of the present utility model within the scope of the present utility model.

Claims

1. A radio station power failure alarm device is characterized in that: the system comprises a signal acquisition module, a main controller, an alarm display and an audible alarm; the signal acquisition module, the alarm display and the audible alarm are respectively connected with the main controller; the switching value input end of the signal acquisition module is connected with a low-voltage relay and a zero-sequence voltage relay, and the low-voltage relay and the zero-sequence voltage relay are connected with a high-voltage line through a voltage transformer; the switching value input end of the signal acquisition module is connected with a high-voltage circuit breaker in the high-voltage switch cabinet and a low-voltage circuit breaker in the low-voltage switch cabinet; the switching value input end of the signal acquisition module is connected with a transformer temperature controller connected with the transformer.

2. The radio station power failure warning device according to claim 1, characterized in that: the alarm display is a liquid crystal display, and the liquid crystal display is connected with the main controller through an HDMI interface.

3. The radio station power failure warning device according to claim 1, characterized in that: the zero sequence voltage relay is arranged at the opening triangle of the secondary side of the voltage transformer, and the zero sequence voltage which can appear at the opening triangle when the line is grounded or the insulation descends is utilized to monitor the grounding or the insulation descending fault of the high-voltage line.

4. The radio station power failure warning device according to claim 1, characterized in that: the switching value input end of the signal acquisition module is respectively connected with the normally closed auxiliary contact of the high-voltage circuit breaker in the high-voltage switch cabinet and the normally closed auxiliary contact of the low-voltage circuit breaker in the low-voltage switch cabinet.

5. The radio station power failure warning device according to claim 1, characterized in that: the signal acquisition module is communicated with the main controller through an RS485\RS 232\Ethernet interface; the audible alarm is connected with the main controller through an AUX interface.

6. The radio station power failure warning device according to claim 1, characterized in that: the alarm display comprises a display controller and a fault display panel, wherein a plurality of lamp plates with fault cause and fault position information are arranged on the fault display panel; each lamp plate is connected with the output end of the display controller respectively; the display controller is connected with the main controller through an RS485 interface.