CN114294564A - SF of transformer substation6Intelligent air supplement control device and automatic control system - Google Patents
SF of transformer substation6Intelligent air supplement control device and automatic control system Download PDFInfo
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- CN114294564A CN114294564A CN202111656335.5A CN202111656335A CN114294564A CN 114294564 A CN114294564 A CN 114294564A CN 202111656335 A CN202111656335 A CN 202111656335A CN 114294564 A CN114294564 A CN 114294564A
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Abstract
The invention belongs to SF6Intelligent air supplement technical field, in particular to SF of transformer substation6Intelligent air supplement control equipment and automatic control system, comprising SF6Control device and automatic control system, the automatic control system is directly additionally arranged on SF6On the control device, the automatic control system is used for monitoring SF6Pressure conditions and inflation; the SF6The control equipment is provided with an operation indicator lamp, an operation display screen, an alarm indicator lamp, a density meter, a power switch, a V2 hand valve, a V1 hand valve, a voltage stabilizer, a C1 equipment switch and an external power interface; the automatic control system comprises a vacuum-pumping system, an intelligent air-supplementing system and a breakerAn electric protection and DTU data uploading system; the invention relates to an SF6 intelligent gas supplementing control device and an automatic control system for a transformer substation, which can reduce the risk of equipment forced stop, brake separating locking and the like caused by frequent gas leakage equipment and can automatically supplement SF6 gas to SF6 high-voltage switchgear.
Description
Technical Field
The invention belongs to SF6Intelligent air supplement technical field, concretely relates to SF6 intelligent air supplement control device of transformer substation and automatic control system.
Background
SF6When the gas pressure of the equipment suddenly reduces due to sudden temperature drop or other conditions of the circuit breaker, the equipment can cause rapid reduction and generation of insulationForced stopping, opening and locking, and the like.
Currently, SF is used6The gas supplementing technology mainly depends on manual control, the gas charging rate is controlled by a pressure reducing valve, the rate is controlled by listening to the gas charging sound in a gas charging pipeline, the gas charging process needs to keep track of the readings of two pressure gauges, an equipment pressure gauge needs to be tapped in the gas charging process, and an interface is sealed and is not tight during gas supplementing, so that SF6 gas leakage is caused. When the inflation is finished, the inflation is stopped completely by manpower, the pressure control precision is poor, the time consumption is long, and the number of people needing operation is at least 3.
Disclosure of Invention
The invention aims to provide a transformer substation SF6Intelligent air supplement unit to solve the existing SF of transformer substation6The difficulty of controlling the air inflation rate of the air supply device is high.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
SF of transformer substation6An intelligent air supplement device comprises SF6Control device and automatic control system, the automatic control system is directly additionally arranged on SF6On the control device, the automatic control system is used for monitoring SF6Pressure conditions and inflation.
Further, the SF6Be equipped with the operation pilot lamp on the controlgear, control the display screen, alarm indicator, density table, switch, V2 hand valve, V1 hand valve, stabiliser, C1 equipment switch and external power source interface, the display screen is controlled to the operation pilot lamp, alarm indicator, density table, switch, V2 hand valve, V1 hand valve, pressure reducer, C1 equipment switch and external power source interface all with automatic control system electric connection.
Furthermore, the automatic control system comprises a vacuum-pumping system, an intelligent air supply system, a power-off protection system and a DTU data uploading system;
the vacuum pumping system comprises: for SF6Carrying out an air tightness test on the device;
the intelligent air supply system comprises: a PLC controller is adopted to supplement air for the high-voltage switch equipment;
the power-off protection: the power supply device is used for preventing the power failure of an external power supply;
the DTU data uploading system comprises: and the working state parameters of the equipment are checked through the networking of the intelligent terminal equipment or the PC terminal.
Further, the pair of SF6The method for carrying out the air tightness test on the device comprises the following steps: the automatic control system is connected with an external power supply, a power switch is closed, no pressure or less than or equal to 0.11MPa in a pipeline is confirmed, a special connecting pipe for a gas circuit is connected, a V1 hand valve, an electric valve and a voltage stabilizer are opened, a vacuum pump is started to operate, when the density meter on an operation surface is below a zero position, the V2 hand valve is closed, the vacuum pump is closed, after 30min, the density meter does not return to zero, the sealing is good, when the density meter reaches the zero position, the reverse is true, the vacuumizing is qualified, and the vacuumizing process of the system is finished.
Further, the method for supplementing air to the high-voltage switch equipment by adopting the PLC comprises the following steps:
s1, closing a V1 hand valve, a V2 hand valve and a voltage stabilizer after vacuumizing is completed, manually inputting a PLC controller by controlling a display screen 2, and entering a setting area to input an air supply online value, an air supply value and an air supply offline value of the high-voltage switch equipment;
s2, the steel cylinder is completely opened manually, the voltage stabilizer is slowly adjusted to reach the required online value of +0.03 MPa-0.1 MPa of the high-voltage switch equipment, and the electric valve, the V1 hand valve, the SF 1 hand valve and the SF are sequentially opened6The gas in the device enters into the special connecting pipe;
and S3, connecting a gas supplementing port of the high-voltage switch equipment in gas leakage through a special connecting pipeline at a C1 interface, switching the equipment from a manual state to an automatic state, monitoring the pressure value in the high-voltage switch in real time, automatically supplementing gas to the equipment when the pressure value is smaller than the gas supplementing value, automatically cutting off the gas supplementing when the pressure value is larger than or equal to the upper limit value, and repeatedly circulating to realize intelligent online gas supplementing.
Preferably, the steel cylinder SF6The steel cylinder SF is provided with an alarm device when the PLC is adopted to supplement air for the high-voltage switch equipment6When the gas pressure is smaller than the set alarm threshold value, the alarm indicator lamp 3 is lighted to inform maintenance personnel that the steel cylinder needs to be replaced manually.
Further, the power-off protectionBy supplying power from DC module, by turning on SF6An air switch arranged behind the control equipment is started; when the AC220V supplies power, the power-off protection switch is always in the ON state; when the external power supply is disconnected and the power is restored, the power failure alarm automatically eliminates the automatic restoration of the working state of the device.
Furthermore, the DTU data uploading system is networked through an intelligent terminal device or a PC terminal, working state parameters of the device are checked, and when the device gives an alarm, corresponding alarm information is sent to the appointed mobile device to prompt maintenance personnel to carry out field operation.
In summary, due to the adoption of the technical scheme, the beneficial technical effects of the invention are as follows:
the invention is provided with SF6Intelligent air supplement, alarm information uploading, etc. when SF is monitored6When the gas pressure value is reduced to an alarm value, the SF can be supplemented by self-starting6Gas, the gas pressure stops supplementing gas when reaching the rated value, reduces the risk of the electric network such as forced stopping of the equipment, opening and locking caused by frequent gas leakage equipment, and can supply gas to SF6Automatic SF replenishment of high-voltage switchgear6A gas.
Drawings
FIG. 1 is a schematic diagram of an automatic control system;
FIG. 2 shows SF6A front view of the control device;
fig. 3 is a left side schematic view of fig. 2.
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 with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
In the embodiment, a transformer substation SF6An intelligent air supplement device comprises SF6Control device and automatic control system, the automatic control system is directly additionally arranged on SF6On the control device, the automatic control system is used for monitoring SF6Pressure conditions and inflation.
The SF6Be equipped with operation pilot lamp 1 on the controlgear, control display screen 2, alarm indicator lamp 3, densimeter 4, switch 5, V2 hand valve 6, V1 hand valve 7, stabiliser 8, C1 equipment switch 9 and external power source interface 10, display screen 2 is controlled to operation pilot lamp 1, alarm indicator lamp 3, densimeter 4, switch 5, V2 hand valve 6, V1 hand valve 7, pressure reducer 8, C1 equipment switch 9 and external power source interface 10 all with automatic control system electric connection.
The automatic control system comprises a vacuum pumping system, an intelligent air supply system, a power-off protection system and a DTU data uploading system;
the vacuum pumping system comprises: for SF6Carrying out an air tightness test on the device;
the intelligent air supply system comprises: a PLC controller is adopted to supplement air for the high-voltage switch equipment;
the power-off protection: the power supply device is used for preventing the power failure of an external power supply;
the DTU data uploading system comprises: and the working state parameters of the equipment are checked through the networking of the intelligent terminal equipment or the PC terminal.
The pair of SF6The method for carrying out the air tightness test on the device comprises the following steps: the automatic control system is connected with an external power supply, a power switch is closed, no pressure or less than or equal to 0.11MPa in a pipeline is confirmed, a special connecting pipe for a gas circuit is connected, a V1 hand valve, an electric valve and a voltage stabilizer are opened, a vacuum pump is started to operate, when the density meter on an operation surface is below a zero position, the V2 hand valve is closed, the vacuum pump is closed, after 30min, the density meter does not return to zero, the sealing is good, when the density meter reaches the zero position, the reverse is true, the vacuumizing is qualified, and the vacuumizing process of the system is finished.
The method for supplementing air to the high-voltage switch equipment by adopting the PLC comprises the following steps:
s1, closing a V1 hand valve, a V2 hand valve and a voltage stabilizer after vacuumizing is completed, manually inputting a PLC controller by controlling a display screen 2, and entering a setting area to input an air supply online value, an air supply value and an air supply offline value of the high-voltage switch equipment;
s2, the steel cylinder is completely opened manually, and the voltage stabilizer is slowly adjusted to reach the high-voltage switch devicePreparing the required online value of +0.03MPa to 0.1MPa, and opening an electric valve, a V1 hand valve and SF in sequence6The gas in the device enters into the special connecting pipe;
and S3, connecting a gas supplementing port of the high-voltage switch equipment in gas leakage through a special connecting pipeline at a C1 interface, switching the equipment from a manual state to an automatic state, monitoring the pressure value in the high-voltage switch in real time, automatically supplementing gas to the equipment when the pressure value is smaller than the gas supplementing value, automatically cutting off the gas supplementing when the pressure value is larger than or equal to the upper limit value, and repeatedly circulating to realize intelligent online gas supplementing.
The steel cylinder SF6The steel cylinder SF is provided with an alarm device when the PLC is adopted to supplement air for the high-voltage switch equipment6When the gas pressure is smaller than the set alarm threshold value, the alarm indicator lamp 3 is turned on, and meanwhile, the equipment can automatically signal that maintenance personnel need to manually replace the steel cylinder.
In this embodiment, the power-off protection is performed by supplying power to the dc module by turning on the SF6An air switch arranged behind the control equipment is started; when the AC220V supplies power, the power-off protection switch is always in the ON state; when the external power supply is disconnected and the power is restored, the power failure alarm automatically eliminates the automatic restoration of the working state of the device.
The DTU data uploading system is networked through an intelligent terminal device or a PC terminal, working state parameters of the device are checked, and when the device gives an alarm, corresponding alarm information is sent to a designated mobile device to prompt maintenance personnel to carry out field operation.
The above description is not intended to limit the present invention, but rather, the present invention is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention.
Claims (8)
1. SF of transformer substation6Intelligence tonifying qi controlgear and control system, its characterized in that: comprising SF6Control device and automatic control system, the automatic control system is directly additionally arranged on SF6On the control device, the automatic control system is used for monitoring SF6Pressure conditions and inflation。
2. Substation SF according to claim 16Controlgear of intelligence tonifying qi, its characterized in that: the SF6Be equipped with the operation pilot lamp on the controlgear, control the display screen, alarm indicator, density table, switch, V2 hand valve, V1 hand valve, stabiliser, C1 equipment switch and external power source interface, the display screen is controlled to the operation pilot lamp, alarm indicator, density table, switch, V2 hand valve, V1 hand valve, pressure reducer, C1 equipment switch and external power source interface all with automatic control system electric connection.
3. Substation SF according to claim 16Control system of intelligence tonifying qi, its characterized in that: the automatic control system comprises a vacuum pumping system, an intelligent air supply system, a power-off protection system and a DTU data uploading system;
the vacuum pumping system comprises: for SF6Carrying out an air tightness test on the device;
the intelligent air supply system comprises: a PLC controller is adopted to supplement air for the high-voltage switch equipment;
the power-off protection: the power supply device is used for preventing the power failure of an external power supply;
the DTU data uploading system comprises: and the working state parameters of the equipment are checked through the networking of the intelligent terminal equipment or the PC terminal.
4. A substation SF according to claim 36The intelligent air supply control system is characterized in that the air tightness test method comprises the following steps: the automatic control system is connected with an external power supply, a power switch is closed, no pressure or less than or equal to 0.11MPa in a pipeline is confirmed, a special connecting pipe for a gas circuit is connected, a V1 hand valve, an electric valve and a voltage stabilizer are opened, a vacuum pump is started to operate, when the density meter on an operation surface is below a zero position, the V2 hand valve is closed, the vacuum pump is closed, after 30min, the density meter does not return to zero, the sealing is good, when the density meter reaches the zero position, the reverse is true, the vacuumizing is qualified, and the vacuumizing process of the system is finished.
5. A substation SF according to claim 36The intelligent air supplementing control system is characterized in that the method for supplementing air to the high-voltage switch equipment by adopting the PLC comprises the following steps:
s1, closing the V1, the V2 hand valve and the voltage stabilizer after vacuumizing is completed, manually inputting the PLC through controlling the display screen 2, and entering a setting area to input an air supplementing upper limit value, an air supplementing value and an air supplementing lower limit value of the high-voltage switch equipment;
s2, the steel cylinder is completely opened manually, the voltage stabilizer is slowly adjusted to reach the required online value of +0.03 MPa-0.1 MPa of the high-voltage switch equipment, and the electric valve, the V1 hand valve, the SF 1 hand valve and the SF are sequentially opened6The gas in the device enters into the special connecting pipe;
and S3, connecting a gas supplementing port of the high-voltage switch equipment in gas leakage through a special connecting pipeline at a C1 interface, switching the equipment from a manual state to an automatic state, monitoring the pressure value in the high-voltage switch in real time, automatically supplementing gas to the equipment when the pressure value is smaller than the gas supplementing value, automatically cutting off the gas supplementing when the pressure value is larger than or equal to the upper limit value, and repeatedly circulating to realize intelligent online gas supplementing.
6. A substation SF according to claim 56The intelligent gas supplementing control system is characterized in that when the PLC is adopted to supplement gas to the high-voltage switch equipment, the steel cylinder SF6When the gas pressure is smaller than the set alarm threshold value, the alarm indicator lamp is turned on to inform maintenance personnel that the steel cylinder needs to be replaced manually.
7. The transformer substation SF according to6Control system of intelligence tonifying qi, its characterized in that: the power-off protection is realized by supplying power by a direct current module and opening SF6An air switch arranged behind the control equipment is started; when the AC220V supplies power, the power-off protection switch is always in the ON state; when the external power supply is disconnected and the power is restored, the power failure alarm automatically eliminates the automatic restoration of the working state of the device.
8. Root of herbaceous plantA substation SF according to claim 36Control system of intelligence tonifying qi, its characterized in that: the DTU data uploading system is networked through an intelligent terminal device or a PC terminal, working state parameters of the device are checked, and when the device gives an alarm, corresponding alarm information is sent to a designated mobile device to prompt maintenance personnel to carry out field operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111656335.5A CN114294564A (en) | 2021-12-30 | 2021-12-30 | SF of transformer substation6Intelligent air supplement control device and automatic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111656335.5A CN114294564A (en) | 2021-12-30 | 2021-12-30 | SF of transformer substation6Intelligent air supplement control device and automatic control system |
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| Publication Number | Publication Date |
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| CN114294564A true CN114294564A (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111656335.5A Pending CN114294564A (en) | 2021-12-30 | 2021-12-30 | SF of transformer substation6Intelligent air supplement control device and automatic control system |
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| CN (1) | CN114294564A (en) |
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2021
- 2021-12-30 CN CN202111656335.5A patent/CN114294564A/en active Pending
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