CN110717081A - Mobile SF6 automatic recovery system based on GIS equipment fault leakage source positioning - Google Patents
Mobile SF6 automatic recovery system based on GIS equipment fault leakage source positioning Download PDFInfo
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Abstract
The invention discloses a mobile SF (sulfur hexafluoride) based on GIS (geographic information System) equipment fault leakage source positioning6Automatic recovery system, including GIS indoor SF6Gas monitoring subsystem, data transmission subsystem, intelligent management platform and mobile SF6And a recovery subsystem. The monitoring subsystem comprises an infrared light sensor and a quantum cascade laser sensor and is used for collecting SF at each position in the GIS room in real time6The gas concentration is measured, the measurement information is transmitted to an intelligent management platform through a data transmission subsystem, and an intelligent analysis unit analyzes the SF collected by the monitoring subsystem in real time6The concentration data to determine whether a leak has occurred. Mobile SF6Recovery subsystem for implementing leaked SF6The high-efficiency and quick recovery of the waste water is realized.
Description
Technical Field
The invention belongs to the field of online monitoring of high-voltage equipment of an electric power system, and particularly relates to a GIS-based equipment faultLeakage source localized SF6An automatic recovery system.
Background
With SF6The totally-enclosed combined electrical apparatus (GIS) using gas as insulating medium is widely applied due to the advantages of good insulating property, small occupied area and space volume, safe and reliable operation and the like, but SF (sulfur hexafluoride) caused by small hole leakage or pipeline leakage can be caused by various reasons in the operation process6The gas leaks out. It is to be noted that SF6Is a suffocating agent, has a specific gravity larger than that of air, and can be gathered at a low position on the ground if leakage occurs, and if GIS equipment operation personnel are exposed to oxygen content<19.5% of the environment, symptoms such as dizziness, vomiting, coma and the like can appear, even the consciousness is lost and the death is caused. The national standard GB/T8905-6The gas content should be less than 1000 ppm ". In addition, high voltage discharge and high temperature may cause SF6Decomposition, the decomposition products of which are severely corrosive and toxic; not to be ignored is SF6Is also one of six major greenhouse gases, and has a Global Warming Potential (GWP) as high as 23900; SF6As an expensive gas, frequent make-up of the equipment due to leakage also increases operating costs. In summary, SF6Gas leakage not only poses a great threat to the personal safety of equipment maintenance personnel, but also has negative effects on the environment. Therefore, leakage SF needs to be installed in the GIS station room6Automatic gas recovery device.
Considering that GIS room space is large and SF occurs6The position randomness of the leakage fault is strong, the leakage source needs to be quickly positioned after the leakage fault occurs, and the SF is adjusted in real time6Arrangement of recovery devices to achieve leakage SF6The recovery is fast, thereby ensuring the personal safety and the environmental safety of workers.
In view of the above problems, an object of the present invention is to provide an SF based on GIS equipment fault leakage source location6Automatic recovery system, this system can realize GIS room SF6Concentration real-time monitoring, fault leakage source positioning and leakage SF6The rapid recovery of (2).
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme: mobile SF (sulfur hexafluoride) based on GIS (geographic information system) equipment fault leakage source positioning6Automatic recovery system, its characterized in that: including GIS indoor SF6Gas monitoring subsystem, data transmission subsystem, intelligent management platform and mobile SF6A recovery subsystem;
GIS indoor SF6The gas monitoring subsystem comprises an infrared light sensor and a quantum cascade laser sensor; the infrared light sensor and the quantum cascade laser sensor are used for collecting SF of each part in the GIS room in real time6The gas concentration and the measurement information are transmitted to the intelligent management platform through the data transmission subsystem;
the data transmission subsystem is used for realizing the GIS indoor SF6Gas monitoring subsystem, portable SF6The information communication between the recovery subsystem and the intelligent management platform comprises a data transmission controller and an input/output interface; the data transmission controller is responsible for distributing and managing the transmission direction and mode (wired and wireless) of data; the input/output interface is compatible with a wired transmission mode and a wireless transmission mode;
the intelligent management platform comprises a storage unit, an intelligent analysis unit and a system management platform; the storage unit is used for storing SF acquired by the infrared light sensor and the quantum cascade laser sensor6Historical data of gas concentration; the intelligent analysis unit is used for processing and analyzing SF6Gas concentration data; and the system management platform controls all parts of the recovery system to work coordinately according to the analysis result of the intelligent analysis unit.
The mobile SF6Recovery subsystem for implementing leaked SF6Including fixed SF6The device comprises a purification and recovery device, a movable air collecting port, a motion mechanism and a motion control unit; the purification and recovery device is used for realizing leakage SF6Purification, recovery and temporary storage of; the movable gas collection port, the movement mechanism and the movement control unit are used for improving the leakage SF6The recycling speed and flexibility are improved, and the recycling effect is enhanced.
GIS indoor SF6The gas monitoring subsystem comprises 21 infrared light sensors and 4 quantum cascade laser sensors; the height of the infrared light sensor from the ground is 0.1m, and the infrared light sensor is arranged on two sides and the bottom of a GIS pipeline to form a 3 multiplied by 7 sensor array; the height of the quantum cascade laser sensors from the ground is 0.3m, the quantum cascade laser sensors are arranged on two sides of a GIS pipeline, and the interval between a laser transmitter and a laser receiver of each quantum cascade laser sensor is 20 m.
The data transmission subsystem supports wired and wireless dual transmission modes and supports a 5G transmission mode, the 5G transmission mode is a conventional mode, and the wired transmission mode is an emergency standby transmission mode.
The intelligent analysis unit analyzes the GIS indoor SF in real time6SF collected by gas monitoring subsystem6Concentration data; when a quantum cascade laser sensor detects SF6The concentration of the SF is determined to be 200% of the average value detected in the first 1-5 minutes6If the gas leaks in a large amount, otherwise, it is judged that no SF occurs6The gas leaks out in large quantities.
The system management platform is according to SF6Leakage judgment result control GIS equipment fault leakage source positioning-based mobile SF6The automatic recovery system operates in different modes when it is determined that no SF occurs6When a large amount of gas leaks, SF is started6A trace leakage detection positioning mode and a GIS room running state analysis mode, and then according to trace SF6The leakage source positioning or leakage source prediction result intelligently adjusts the gas collecting port arrangement mode; when it is judged that SF occurs6When a large amount of leakage occurs, the leakage source rapid positioning mode is started immediately, and SF is started 30s after the intelligent analysis unit finishes the positioning of the leakage source or judges the leakage occurs6A purification and recovery device;
the SF6The trace leakage detection mode regularly utilizes SF with a sampling interval of 24h and a sample interval of nearly 2 months6Concentration data analysis for the presence of SF6Micro leakage, if any, starting SF6A trace leakage source positioning function; the above-mentionedThe GIS room running state analysis mode periodically utilizes historical data to analyze big data, identifies the abnormal running state of the system and predicts the position of a possible leakage source; the leakage source rapid positioning mode utilizes SF with a sampling interval of 1s and a sample interval of 30s6And (5) quickly positioning concentration data.
The movable gas collecting port passes through a flexible pipeline and the fixed SF6The purification and recovery device is connected; the air collecting port is fixed with the moving mechanism; the horizontal moving range of the motion mechanism is 10m (5 m in each direction), and the vertical moving distance is 2 m; the motion control unit receives control information transmitted by the intelligent management platform through the data transmission subsystem, controls the motion mechanism to act and drives the air collecting port to move;
the movable air collecting ports are arranged in the following mode:
(1) a movable air collecting port is arranged at each of 4 corners of the GIS room;
(2) the GIS room is provided with a movable air collecting port at intervals of 20m along each side of the longitudinal direction of the GIS pipeline.
The invention has the beneficial effects that:
by adopting the technical scheme, the invention has the following technical effects:
the system can realize GIS indoor SF6Monitoring the concentration in real time;
the system can realize a 5G conventional transmission mode and a wired emergency transmission mode, and actively supports the construction of ubiquitous power Internet of things on the premise of ensuring the reliability of the system;
the system can realize potential SF6Leakage location prediction, trace SF6Leak detection and localization and large SF6Fast positioning of leakage fault points;
the system can realize leakage SF6The automatic flexible quick recovery of (2) strengthens recovery speed and effect, reduces the danger that the staff gets into trouble GIS room operation.
Drawings
The information of the attached drawings of the invention is explained as follows:
FIG. 1 shows the SF data of the present invention based on GIS device fault leakage source location6The structure schematic diagram of the automatic recovery system;
FIG. 2 shows the GIS indoor SF of the present invention6The gas sensor arrangement mode of the gas monitoring subsystem is schematic;
FIG. 3 shows a mobile SF according to the present invention6The gas collecting port arrangement mode of the recovery subsystem is shown schematically;
FIG. 4 is a flowchart of the intelligent management platform work strategy of the present invention;
the specific implementation mode is as follows:
as shown in figure 1, the mobile SF based on GIS equipment fault leakage source positioning of the invention6Automatic recovery system, including GIS indoor SF6Gas monitoring subsystem, data transmission subsystem, intelligent management platform and mobile SF6A recovery subsystem;
GIS indoor SF6The gas monitoring subsystem comprises an infrared light sensor and a quantum cascade laser sensor; the infrared light sensor and the quantum cascade laser sensor are used for collecting SF of each part in the GIS room in real time6The gas concentration and the measurement information are transmitted to the intelligent management platform through the data transmission subsystem;
the data transmission subsystem is used for realizing the GIS indoor SF6Gas monitoring subsystem, portable SF6The information communication between the recovery subsystem and the intelligent management platform comprises a data transmission controller and an input/output interface; the data transmission controller is responsible for distributing and managing the transmission direction and mode (wired and wireless) of data; the input/output interface is compatible with a wired transmission mode and a wireless transmission mode;
the intelligent management platform comprises a storage unit, an intelligent analysis unit and a system management platform; the storage unit is used for storing SF acquired by the infrared light sensor and the quantum cascade laser sensor6Historical data of gas concentration; the intelligent analysis unit is used for processing and analyzing SF6Gas concentration data; and the system management platform controls all parts of the recovery system to work coordinately according to the analysis result of the intelligent analysis unit.
The mobile SF6Recovery subsystem for implementing leaked SF6Including fixed SF6The device comprises a purification and recovery device, a movable air collecting port, a motion mechanism and a motion control unit; the purification and recovery device is used for realizing leakage SF6Purification, recovery and temporary storage of; the movable gas collection port, the movement mechanism and the movement control unit are used for improving the leakage SF6The recycling speed and flexibility are improved, and the recycling effect is enhanced.
As shown in fig. 2, SF in GIS room6The gas monitoring subsystem comprises 21 infrared light sensors and 4 quantum cascade laser sensors; the height of the infrared light sensor from the ground is 0.1m, and the infrared light sensor is arranged on two sides and the bottom of a GIS pipeline to form a 3 multiplied by 7 sensor array; the height of the quantum cascade laser sensors from the ground is 0.3m, the quantum cascade laser sensors are arranged on two sides of a GIS pipeline, and the interval between a laser transmitter and a laser receiver of each quantum cascade laser sensor is 20 m.
The data transmission subsystem supports wired and wireless dual transmission modes and supports a 5G transmission mode, the 5G transmission mode is a conventional mode, and the wired transmission mode is an emergency standby transmission mode.
As shown in fig. 3, the intelligent analysis unit analyzes the SF in the GIS room in real time6SF collected by gas monitoring subsystem6Concentration data; when a quantum cascade laser sensor detects SF6The concentration of the SF is determined to be 200% of the average value detected in the first 1-5 minutes6If the gas leaks in a large amount, otherwise, it is judged that no SF occurs6A large amount of gas leaks;
the system management platform is according to SF6Leakage judgment result control GIS equipment fault leakage source positioning-based mobile SF6The automatic recovery system works in different modes, (1) judging that no SF occurs6Large leakage of gas, start of SF6A trace leakage detection positioning mode and a GIS room running state analysis mode, and then according to trace SF6The leakage source positioning or leakage source prediction result intelligently adjusts the gas collecting port arrangement mode; (2) determination of SF occurrence6A large amount of leakage is detected, a leakage source quick positioning mode is started immediately, and the leakage is finished in an intelligent analysis unitSF starting 30s after drain-source positioning or judgment of leakage6A purification and recovery device;
the SF6The trace leakage detection mode regularly utilizes SF with a sampling interval of 24h and a sample interval of nearly 2 months6Concentration data analysis for the presence of SF6Micro leakage, if any, starting SF6A trace leakage source positioning function; the GIS room running state analysis mode periodically utilizes historical data to analyze big data, identifies abnormal running states of the system and predicts the positions of possible leakage sources; the leakage source rapid positioning mode utilizes SF with a sampling interval of 1s and a sample interval of 30s6And (5) quickly positioning concentration data.
The method for realizing the positioning of the leakage source by the intelligent analysis unit comprises the following steps:
(1) reading each detection point SF from the memory cell6Concentration history data yi(t), i is a detection point number, and t is detection time;
(2) setting a sampling period dt, calculating Ki(t)，
In the formula yi(t) is SF at time t at monitoring point i6Concentration, dt is the sampling period;
(3) and (5) performing exponential fitting on K (t), namely solving an optimization problem:
wherein, T is 0, dt,2dt … T; t is the analysis interval length;
is a 2 norm; p is a concentration characteristic amount;
(4) and comprehensively analyzing the P value of each monitoring point to determine the position of the single-point leakage source or the range of the multi-point leakage source.
As shown in fig. 4, the movable air collecting opening is connected with the movable air collecting opening through a flexible pipeFixed SF6The purification and recovery device is connected; the air collecting port is fixed with the moving mechanism; the horizontal moving range of the motion mechanism is 10m (5 m in each direction), and the vertical moving distance is 2 m; the motion control unit receives control information transmitted by the intelligent management platform through the data transmission subsystem, controls the motion mechanism to act and drives the air collecting port to move;
the movable air collecting ports are arranged in the following mode:
(1) a movable air collecting port is arranged at each of 4 corners of the GIS room;
(2) the GIS room is provided with a movable air collecting port at intervals of 20m along each side of the longitudinal direction of the GIS pipeline.
Claims (8)
1. Mobile SF based on GIS equipment fault leakage source positioning6Automatic recovery system, its characterized in that: including GIS indoor SF6Gas monitoring subsystem, data transmission subsystem, intelligent management platform and mobile SF6A recovery subsystem;
GIS indoor SF6The gas monitoring subsystem comprises an infrared light sensor and a quantum cascade laser sensor; the infrared light sensor and the quantum cascade laser sensor are used for collecting SF of each part in the GIS room in real time6The gas concentration and the measurement information are transmitted to the intelligent management platform through the data transmission subsystem;
the data transmission subsystem is used for realizing the GIS indoor SF6Gas monitoring subsystem, portable SF6The information communication between the recovery subsystem and the intelligent management platform comprises a data transmission controller and an input/output interface; the data transmission controller is responsible for distributing and managing the transmission direction and mode of data, and the transmission mode of the data is a wired mode or a wireless mode; the input/output interface is compatible with a wired transmission mode and a wireless transmission mode;
the intelligent management platform comprises a storage unit, an intelligent analysis unit and a system management platform; the storage unit is used for storing SF acquired by the infrared light sensor and the quantum cascade laser sensor6Concentration of gasHistorical data; the intelligent analysis unit is used for processing and analyzing SF6Gas concentration data; the system management platform controls all parts of the recovery system to work coordinately according to the analysis result of the intelligent analysis unit;
the mobile SF6Recovery subsystem for implementing leaked SF6Including fixed SF6The device comprises a purification and recovery device, a movable air collecting port, a motion mechanism and a motion control unit; the purification and recovery device is used for realizing leakage SF6Purification, recovery and temporary storage of; the movable gas collection port, the movement mechanism and the movement control unit are used for improving the leakage SF6The recycling speed and flexibility are improved, and the recycling effect is enhanced.
2. The mobile SF6 automatic recovery system based on GIS equipment fault leakage source location of claim 1, wherein said SF6 gas monitoring subsystem within a GIS room comprises 21 infrared light sensors and 4 quantum cascade laser sensors; the height of the infrared light sensor from the ground is 0.1m, and the infrared light sensor is arranged on two sides and the bottom of a GIS pipeline to form a 3 multiplied by 7 sensor array; the height of the quantum cascade laser sensors from the ground is 0.3m, the quantum cascade laser sensors are arranged on two sides of a GIS pipeline, and the interval between a laser transmitter and a laser receiver of each quantum cascade laser sensor is 20 m.
3. The GIS equipment fault leakage source location based mobile SF6 automatic recovery system of claim 1, wherein said data transmission subsystem supports dual wired and wireless transmission modes and supports 5G transmission mode, with 5G transmission mode being normal mode and wired transmission mode being emergency standby transmission mode.
4. The GIS equipment fault leakage source positioning-based mobile SF6 automatic recovery system of claim 1, wherein said intelligent analysis unit analyzes said GIS indoor SF in real time6SF collected by gas monitoring subsystem6Concentration data; when a quantum cascade laser sensor detects SF6The concentration exceeds the first 1-5The occurrence of SF is judged as 200% of the average value of the minute detection6If the gas leaks in a large amount, otherwise, it is judged that no SF occurs6The gas leaks out in large quantities.
5. The mobile SF6 automatic recovery system based on GIS equipment fault leakage source location of claim 1, wherein said system management platform is according to SF6Leakage judgment result control GIS equipment fault leakage source positioning-based mobile SF6The automatic recovery system operates in different modes when it is determined that no SF occurs6When a large amount of gas leaks, SF is started6A trace leakage detection positioning mode and a GIS room running state analysis mode, and then according to trace SF6The leakage source positioning or leakage source prediction result intelligently adjusts the gas collecting port arrangement mode; when it is judged that SF occurs6When a large amount of leakage occurs, the leakage source rapid positioning mode is started immediately, and SF is started 30s after the intelligent analysis unit finishes the positioning of the leakage source or judges the leakage occurs6A purification and recovery device.
6. The mobile SF6 automatic recovery system based on GIS equipment fault leakage source location of claim 5, wherein said SF6The trace leakage detection mode regularly utilizes SF with a sampling interval of 24h and a sample interval of nearly 2 months6Concentration data analysis for the presence of SF6Micro leakage, if any, starting SF6A trace leakage source positioning function; the GIS room running state analysis mode periodically utilizes historical data to analyze big data, identifies abnormal running states of the system and predicts the positions of possible leakage sources; the leakage source rapid positioning mode utilizes SF with a sampling interval of 1s and a sample interval of 30s6And (5) quickly positioning concentration data.
7. The mobile SF6 automatic recovery system of claim 5 or 6 based on GIS equipment fault leakage source location, wherein said mobile gas collection port is connected to said fixed SF by flexible piping6The purification and recovery device is connected; the air collecting port is fixed with the moving mechanism; what is needed isThe horizontal moving range of the motion mechanism is 10m (5 m in each direction), and the vertical moving distance is 2 m; the motion control unit receives control information transmitted by the intelligent management platform through the data transmission system, controls the motion mechanism to act and drives the air collecting port to move.
8. The mobile SF6 automatic recovery system based on GIS equipment fault leakage source location of claim 7, wherein said movable collection port is arranged as follows:
(1) a movable air collecting port is arranged at each of 4 corners of the GIS room;
(2) the GIS room is provided with a movable air collecting port at intervals of 20m along each side of the longitudinal direction of the GIS pipeline.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113202725A (en) * | 2021-06-08 | 2021-08-03 | 国网北京市电力公司 | Leakage gas recovery system |
| CN115285943A (en) * | 2022-08-10 | 2022-11-04 | 重庆科技学院 | Sulfur hexafluoride recovery amount prediction method |
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