CN110854872A - Automatic AVC (automatic voltage control) switching system for high-voltage chamber - Google Patents
Automatic AVC (automatic voltage control) switching system for high-voltage chamber Download PDFInfo
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- CN110854872A CN110854872A CN201911174865.9A CN201911174865A CN110854872A CN 110854872 A CN110854872 A CN 110854872A CN 201911174865 A CN201911174865 A CN 201911174865A CN 110854872 A CN110854872 A CN 110854872A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Selective Calling Equipment (AREA)
Abstract
The invention discloses an automatic AVC (automatic voltage control) switching system for a high-pressure chamber, which comprises infrared ray devices, automatic AVC switching device controllers and alarm devices, wherein the infrared ray devices are arranged at the front door and the rear door of the high-pressure chamber and used for monitoring the personnel entering and exiting the high-pressure chamber, the automatic AVC switching device controllers and the infrared ray devices form a star network structure, the number of people entering and exiting the high-pressure chamber is judged, the automatic AVC switching device controllers control the alarm devices when the number of people entering the high-pressure chamber is one, and the automatic AVC switching devices are controlled to exit or switch in an AVC function according to the number of people entering and exiting the. The system can realize automatic AVC switching according to the personnel entering and exiting of the high-voltage chamber, improves the working efficiency and effectively reduces the potential safety hazards of the power grid and the personnel.
Description
Technical Field
The invention relates to the field of high-voltage switch cabinet maintenance, in particular to an automatic AVC switching-on/off system for a high-voltage chamber.
Background
The safety management requirements for overhaul of high-voltage switch cabinets are stipulated as follows: before entering the high-voltage chamber, people must exit from the AVC and then can enter, and when the people leave, the AVC function is recovered. Before any person enters the high-voltage room, the operation and maintenance person needs to contact the scheduling operator to quit the AVC function, and when the person leaves the high-voltage room, the operation and maintenance person needs to contact the scheduling operator to put the AVC function into the room. The execution procedure of the process is complex, time-consuming and low in efficiency, and the safety risk that the worker forgets to switch on or off the AVC function exists.
① is time-consuming, particularly before entering the high-voltage room, a person needs to contact operation and maintenance personnel in advance, the operation and maintenance personnel contact scheduling personnel after confirming, and the person can enter after receiving a call back from the opposite side and confirming that the AVC exits, ② personnel has high safety hazards, safety regulations require that the person is prohibited from entering the high-voltage room, but the existing method cannot monitor and control the person entering the high-voltage room, so that the safety is greatly reduced.
Disclosure of Invention
In order to solve the technical problem, the invention discloses an automatic AVC switching system of a high-voltage chamber. The system can realize automatic AVC switching according to the personnel entering and exiting of the high-voltage chamber, improves the working efficiency and effectively reduces the potential safety hazards of the power grid and the personnel.
The invention is realized by the following technical scheme:
the AVC automatic switching system comprises infrared ray devices, AVC automatic switching devices, an AVC automatic switching device controller and an alarm device, wherein the infrared ray devices are arranged at the front door and the rear door of a high-voltage chamber and used for monitoring personnel in and out of the high-voltage chamber, the AVC automatic switching device controller and each infrared ray device form a star network structure, the number of people entering and exiting the high-voltage chamber is judged, the AVC automatic switching device controller controls the alarm device when the number of people entering the high-voltage chamber is single, and the AVC automatic switching device is controlled to switch out or switch in an AVC function according to the number of people entering and exiting the high-voltage chamber.
Furthermore, the front door and the rear door of the high-pressure chamber are respectively provided with two groups of infrared ray devices, each group of infrared ray device comprises an infrared light projector and an infrared light receiver, the infrared light projector and the infrared light receiver are correspondingly arranged on two sides of the door, and the two groups of infrared ray devices on the same door are arranged in parallel along a horizontal plane.
Furthermore, the infrared projector emits 1000 beams of infrared light every second without intermittence, the infrared light receiver is connected with the wireless communication device, and light signals received by the infrared light receiver are processed by the signal processing circuit and then transmitted to the AVC automatic switching device controller through the wireless communication device in a ZigBee wireless communication mode.
Further, the wireless communication device is a ZigBee DRF1605h module, the wireless frequency of the module is 2.4GHz, a serial port is arranged in the module, and data full-transparent transmission can be realized through the serial port of the control system and the ZigBee DRF1605h module.
Furthermore, the controller of the AVC automatic switching device comprises a signal receiver, a counter and a relay, wherein the signal receiver receives signals transmitted by the wireless communication device, the counter is used for identifying and counting the number of people passing in and out of front and rear doors of the high-voltage chamber, and the relay controls the on-off of the alarm device.
Further, the signal receiver is connected with the scheduling end.
Furthermore, when AVC is successfully switched off, a dispatching end feeds back a signal to trigger an alarm, and an audible alarm prompts field personnel.
Furthermore, the alarm device is a sound and light alarm device and comprises a voice broadcasting system.
Furthermore, the infrared ray device is provided with an active infrared correlation module ABT-80, and the signal processing circuit is an automatic environment recognition circuit, so that the judgment of 'personnel entering and exiting the high-voltage chamber' on site is realized.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the automatic AVC switching system for the high-voltage chamber is applied to the high-voltage chamber, the irregularity rate and the forgetting switching rate can be reduced to the minimum, the overhaul safety of the high-voltage chamber is greatly improved, the AVC switching time is shortened to be within 5min from 10-15min, and the AVC switching efficiency is effectively improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a schematic diagram of signal transmission according to the present invention;
FIG. 3 is a schematic structural view of the present invention;
fig. 4 is a graph of violation rate and forgetting rate of high-voltage room AVC switching.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in figures 1-3, the invention relates to a high-pressure chamber AVC automatic switching system, which comprises infrared ray devices, AVC automatic switching device controllers and alarm devices, wherein the infrared ray devices are arranged at the front door and the rear door of a high-pressure chamber and are used for monitoring the personnel entering and exiting the high-pressure chamber, the AVC automatic switching device controllers and the infrared ray devices form a star network structure, the number of people entering and exiting the high-pressure chamber is judged, when the number of people entering the high-pressure chamber is a single person, the AVC automatic switching device controllers control the alarm devices, and the AVC automatic switching devices are controlled to exit or switch in the AVC function according to the personnel entering and exiting the high.
Furthermore, the front door and the rear door of the high-pressure chamber are respectively provided with two groups of infrared ray devices, each group of infrared ray device comprises an infrared light projector and an infrared light receiver, the infrared light projector and the infrared light receiver are correspondingly arranged on two sides of the door, and the two groups of infrared ray devices on the same door are arranged in parallel along a horizontal plane.
Furthermore, the infrared projector emits 1000 beams of infrared light every second without intermittence, the infrared light receiver is connected with the wireless communication device, and light signals received by the infrared light receiver are processed by the signal processing circuit and then transmitted to the AVC automatic switching device controller through the wireless communication device in a ZigBee wireless communication mode.
Example 2
In this embodiment, based on embodiment 1, the wireless communication device is a ZigBee DRF1605h module, the wireless frequency of the module is 2.4GHz, and the module has a built-in serial port, and can implement full transparent data transmission through the serial port of the control system and the ZigBee DRF1605h module.
Furthermore, the controller of the AVC automatic switching device comprises a signal receiver, a counter and a relay, wherein the signal receiver receives signals transmitted by the wireless communication device, the counter is used for identifying and counting the number of people passing in and out of front and rear doors of the high-voltage chamber, and the relay controls the on-off of the alarm device.
Further, the signal receiver is connected with the scheduling end.
Furthermore, when AVC is successfully switched off, a dispatching end feeds back a signal to trigger an alarm, and an audible alarm prompts field personnel.
Furthermore, the alarm device is a sound and light alarm device and comprises a voice broadcasting system.
Furthermore, the infrared ray device is provided with an active infrared correlation module ABT-80, and the signal processing circuit is an automatic environment recognition circuit, so that the judgment of 'personnel entering and exiting the high-voltage chamber' on site is realized.
Example 3
The high-pressure chamber AVC automatic switching system is adopted to carry out switching test on and off the high-pressure chamber, 40 times of switching is carried out within 1 month, and the results are as the following tables 1, 2 and 3:
TABLE 1 AVC time taken to go back and forth
TABLE 2 AVC violation Rate of Release
TABLE 3 AVC forgetting Rate of Entries and retires
Before the high-voltage chamber AVC automatic switching system is not adopted, the violation rate (single person enters) and the forgetting switching rate of the high-voltage chamber AVC switching are shown in figure 4.
Therefore, the automatic AVC switching system for the high-voltage chamber can reduce the violation rate (single person entering) and the switching forgetting rate to the minimum, greatly improve the safety of high-voltage chamber maintenance, shorten the AVC switching time from 10-15min to within 5min, and effectively improve the AVC switching efficiency.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The AVC automatic switching system is characterized by comprising infrared ray devices, AVC automatic switching devices, an AVC automatic switching device controller and an alarm device, wherein the infrared ray devices are arranged at the front door and the rear door of a high-pressure chamber and used for monitoring personnel in and out of the high-pressure chamber, the AVC automatic switching device controller and each infrared ray device form a star network structure, the number of people entering and exiting the high-pressure chamber is judged, the AVC automatic switching device controller controls the alarm device when the number of people entering the high-pressure chamber is one, and the AVC automatic switching device is controlled to switch out or switch into the AVC function according to the number of people entering and exiting the high-pressure chamber.
2. The AVC automatic switching system of claim 1, wherein the infrared ray devices are respectively provided with two groups at the front door and the rear door of the high pressure chamber, each group of infrared ray devices comprises an infrared projector and an infrared receiver, the infrared projector and the infrared receiver are correspondingly arranged at two sides of the door, and the two groups of infrared ray devices on the same door are arranged in parallel along a horizontal plane.
3. The AVC automatic switching system of claim 2, wherein the infrared light projector emits 1000 infrared light beams per second without intermittence, the infrared light receiver is connected with the wireless communication device, and light signals received by the infrared light receiver are processed by the signal processing circuit and then transmitted to the controller of the AVC automatic switching device through the wireless communication device in a ZigBee wireless communication mode.
4. The high-voltage chamber AVC automatic switching system according to claim 3, wherein said wireless communication device is a ZigBee DRF1605h module, the wireless frequency of the module is 2.4GHz, the module is provided with a serial port inside, and the data full transparent transmission can be realized through the serial port of the control system and the ZigBee DRF1605h module.
5. The AVC automatic switching system of claim 3, wherein the AVC automatic switching device controller comprises a signal receiver, a counter and a relay, the signal receiver receives signals transmitted by the wireless communication device, the counter is used for identifying and counting the number of people entering and exiting the front door and the rear door of the high-voltage chamber, and the relay controls the on-off of the alarm device.
6. The AVC automatic switching system of claim 5, wherein the signal receiver is connected to the scheduling terminal.
7. The AVC automatic switching system of claim 6, wherein when the AVC is switched off successfully, the dispatching end feeds back a signal to trigger an alarm, and the audio alarm prompts field personnel by controlling a relay to be closed, and switching on an audio alarm power supply or a light alarm power supply to realize the alarm function when the alarm signal sent by the main CPU is received.
8. The AVC automatic switching system of claim 1, wherein the alarm device is an audible and visual alarm device comprising a voice broadcast system.
9. The AVC automatic switching system of claim 3, wherein the infrared ray device is provided with an active infrared correlation module ABT-80, and the signal processing circuit is an automatic environment recognition circuit, so that the on-site judgment of 'personnel entering and exiting the high-voltage chamber' is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911174865.9A CN110854872A (en) | 2019-11-26 | 2019-11-26 | Automatic AVC (automatic voltage control) switching system for high-voltage chamber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911174865.9A CN110854872A (en) | 2019-11-26 | 2019-11-26 | Automatic AVC (automatic voltage control) switching system for high-voltage chamber |
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| CN110854872A true CN110854872A (en) | 2020-02-28 |
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| CN201911174865.9A Pending CN110854872A (en) | 2019-11-26 | 2019-11-26 | Automatic AVC (automatic voltage control) switching system for high-voltage chamber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111340991A (en) * | 2020-04-08 | 2020-06-26 | 国网四川省电力公司遂宁供电公司 | AVC state controlled access control system and use method thereof |
| CN111682648A (en) * | 2020-07-03 | 2020-09-18 | 国网四川省电力公司绵阳供电公司 | Method and system for automatically stopping AVC when personnel enter high-voltage chamber |
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2019
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Patent Citations (4)
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Non-Patent Citations (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111340991A (en) * | 2020-04-08 | 2020-06-26 | 国网四川省电力公司遂宁供电公司 | AVC state controlled access control system and use method thereof |
| CN111682648A (en) * | 2020-07-03 | 2020-09-18 | 国网四川省电力公司绵阳供电公司 | Method and system for automatically stopping AVC when personnel enter high-voltage chamber |
| CN111682648B (en) * | 2020-07-03 | 2022-03-18 | 国网四川省电力公司绵阳供电公司 | Method and system for automatically stopping AVC when personnel enter high-voltage chamber |
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Application publication date: 20200228 |
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