CN111879465A - Gas leakage detection system and method for GIS equipment - Google Patents
Gas leakage detection system and method for GIS equipment Download PDFInfo
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- CN111879465A CN111879465A CN202010622158.8A CN202010622158A CN111879465A CN 111879465 A CN111879465 A CN 111879465A CN 202010622158 A CN202010622158 A CN 202010622158A CN 111879465 A CN111879465 A CN 111879465A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3272—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers for verifying the internal pressure of closed containers
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Abstract
The invention provides a gas leakage detection system for GIS equipment, which comprises a pressure sensor, a temperature sensor, an A/D converter, an upper computer and an alarm module, wherein the pressure sensor and the temperature sensor are arranged at the position where gas leakage of the GIS equipment is easy, the output ends of the pressure sensor and the temperature sensor are respectively connected with the input end of the A/D converter, the output end of the A/D converter is connected with the input end of the upper computer, and the output end of the upper computer is connected with the input end of the alarm module. The pressure sensor and the temperature sensor acquire the air pressure and the temperature in the GIS equipment air chamber in real time, combine the position information data of the pressure sensor and the temperature sensor, and send the air pressure and the temperature to the upper computer after A/D conversion, the upper computer calculates the gas density of SF6 gas by using a self-adaptive filtering algorithm and a temperature compensation algorithm, when the gas density exceeds a preset safety threshold, the upper computer sends a working signal to an alarm module at a corresponding position, and the alarm module works and warns the GIS equipment that the gas leakage risk exists.
Description
Technical Field
The invention relates to the technical field of power equipment detection devices, in particular to a gas leakage detection system and method for GIS equipment.
Background
With the wide application of Gas Insulated metal enclosed Switchgear (GIS), the use of the insulating Gas SF6 is increasing, and once the SF6 Gas leaks, under the action of a high-voltage arc or at a high temperature, the SF6 Gas is partially decomposed into a highly toxic Gas, which may cause great harm to nearby workers and the surrounding environment, so that it is necessary to perform timing detection on the Gas inside the GIS.
Patent publication No. CN106500925A proposes a gas leakage detection system, device and method for GIS equipment, which mainly uses an infrared scanner to generate an infrared image of the surrounding environment of GIS equipment, and sends the image to a controller for gas leakage judgment. However, the gas leakage detection of the GIS equipment cannot be performed in all directions only by using the infrared scanner, and the infrared scanners need to be arranged at a plurality of angles, which causes a problem of high cost.
Disclosure of Invention
The invention provides a gas leakage detection system and method for GIS equipment, aiming at overcoming the defect that the gas leakage detection of the GIS equipment cannot be carried out comprehensively in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides a GIS equipment gas leakage detecting system, includes pressure sensor, temperature sensor, AD converter, host computer and alarm module, and wherein, pressure sensor and temperature sensor set up the easy gas leakage position at GIS equipment, and pressure sensor and temperature sensor's output is connected with the input of AD converter respectively, and the output of AD converter is connected with the input of host computer, and the output of host computer is connected with alarm module's input.
In the using process, the pressure sensor and the temperature sensor acquire the air pressure and the temperature of each gas leakage part in the GIS equipment gas chamber in real time, the acquired air pressure value, temperature value and position information data are sent to the upper computer after A/D conversion, the upper computer calculates the gas density of SF6 gas in the GIS equipment gas chamber through a preset self-adaptive filtering algorithm and a preset temperature compensation algorithm, whether the gas density exceeds a preset safety threshold value is judged, if yes, the upper computer sends a working signal to an alarm module at a corresponding position according to the received position information, and the alarm module works and warns the GIS equipment that the gas leakage risk exists.
According to the technical scheme, the pressure sensor and the temperature sensor are combined to collect air pressure data and temperature data in the GIS equipment air chamber and then send the air pressure data and the temperature data to the upper computer, the position information of the pressure sensor and the temperature sensor is simultaneously sent to the upper computer, the upper computer respectively carries out gas leakage detection on each part in the GIS equipment air chamber according to the position information of the upper computer, the upper computer calculates the gas density of SF6 gas in the GIS equipment through a preset adaptive filtering algorithm and temperature compensation, when the gas density value is abnormal, the alarm module of the corresponding position is controlled to work and give an alarm, and the gas leakage detection alarm function of the GIS equipment is achieved.
Preferably, the system further comprises a gas density detection module, the gas density detection module is arranged in the GIS equipment air chamber, and the output end of the gas density detection module is connected with the input end of the upper computer.
Preferably, the gas density detection module includes one or more of an HF gas density detector, an SO2 gas density detector, an SOF2 gas density detector, an SO2F2 gas density detector, an SOF4 gas density detector, and an S2F10 gas density detector, and is configured to further determine whether there is a partial discharge in the current GIS device.
Preferably, the system further comprises a micro water density detector, the micro water density detector is arranged in the GIS equipment air chamber, and the output end of the micro water density detector is connected with the input end of the upper computer; a humidity threshold value is preset in the upper computer, and when the micro water density of the current GIS equipment air chamber sent by the micro water density detector is larger than the preset humidity threshold value, the upper computer sends a working signal to the alarm module.
Preferably, the system further comprises a display, and the input end of the display is connected with the output end of the upper computer.
Preferably, the system further comprises a communication module, the input end of the communication module is connected with the output end of the upper computer, and the upper computer uploads the acquired data and the gas density value calculated by adopting the adaptive filtering algorithm and the temperature compensation algorithm to the server for storage, monitoring and management through the communication module.
Preferably, the communication module includes one of a GPRS module, a 4G module, and a WIFI module.
Preferably, the alarm module comprises one or more of a buzzer, a warning lamp and an audible and visual alarm.
The invention also provides a gas leakage detection method of the GIS equipment, and the gas leakage detection system of the GIS equipment is applied, and the gas leakage detection method specifically comprises the following steps:
s1: the pressure sensor and the temperature sensor acquire an air pressure value and a temperature value in a GIS equipment air chamber in real time, and the acquired air pressure value, temperature value and mounting position information of the pressure sensor and the temperature sensor are transmitted to an upper computer after A/D conversion;
s2: the upper computer calculates the air pressure values and the temperature values of different positions in the GIS equipment air chamber by adopting a self-adaptive filtering algorithm and a temperature compensation algorithm according to the installation position information of the pressure sensor and the temperature sensor, and the pressure when the actual pressure in the GIS equipment air chamber is compensated and corrected to 20 ℃ currently represents the internal SF6 gas density;
s3: the upper computer judges according to the calculated SF6 gas density and a preset safety threshold value thereof, when the gas density is larger than the preset safety threshold value, the upper computer sends a working signal to an alarm module of a target position according to the position information of the currently calculated part, and the alarm module works and gives an alarm.
Preferably, the step of S3 further includes the steps of: the gas density detector is adopted to detect the density of each component gas in the GIS equipment, and the density of each component gas comprises: one or more of HF gas density, SO2 gas density, SOF2 gas density, SO2F2 gas density, SOF4 gas density, S2F10 gas density; and then sending the gas density of each component to an upper computer, judging by the upper computer according to a preset gas density safety threshold value of each component, sending a working signal to an alarm module by the upper computer when the gas density of each component is greater than the safety threshold value, and sending an alarm when the alarm module works.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that: the invention can detect whether the GIS equipment has SF6 gas leakage under the condition of continuously opening the standby power supply or stopping operation, and can send out an alarm at a specific gas leakage position, so that an operator can find the gas leakage position as soon as possible and overhaul the gas leakage position, and the gas leakage detection of the GIS equipment can be realized.
Drawings
Fig. 1 is a schematic structural diagram of a gas leakage detection system of a GIS device in embodiment 1.
Fig. 2 is a schematic structural diagram of the gas leakage detection system of the GIS device of embodiment 2.
Fig. 3 is a flowchart of a GIS device gas leakage detection method of embodiment 3.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
The present embodiment provides a gas leakage detection system for GIS equipment, which is a schematic structural diagram of the gas leakage detection system for GIS equipment of the present embodiment, as shown in fig. 1.
The gas leakage detection system for the GIS equipment provided by the embodiment comprises a pressure sensor 1, a temperature sensor 2, an A/D converter 3, an upper computer 4 and an alarm module 5, wherein the pressure sensor 1 and the temperature sensor 2 are arranged at the positions which are easy to leak in a gas chamber of the GIS equipment, and the alarm module 5 is arranged at the corresponding positions; the output ends of the pressure sensor 1 and the temperature sensor 2 are respectively connected with the input end of the A/D converter 3, the output end of the A/D converter 3 is connected with the input end of the upper computer 4, and the output end of the upper computer 4 is connected with the input end of the alarm module 5.
In this embodiment, pressure sensor 1, temperature sensor 2 install respectively and set up in the position of the easy gas leakage position of GIS, including the compartment, the insulator, the O type sealing washer, the switch insulator spindle, mutual inductance secondary line terminal, the case board tie point, the air chamber female pipe, annex sand hole department and air chamber telescopic joint interface etc. and the installation sets up in the easy gas leakage position of SF6 circuit breaker, including pillar actuating lever and seal ring scratch department, inflation valve sealing failure department, there is crack department at pillar porcelain bushing root, flange hookup department, the explosion chamber top cap has sand hole department, the trigeminy case apron, the gas line connects, the density relay interface, secondary pressure gauge connects, welding seam and seal groove and sealing washer (pad) size department such as not cooperating.
In this embodiment, the alarm module 5 includes one or more of a buzzer, a warning light, and an audible and visual alarm.
In the specific implementation process, the pressure sensor 1 and the temperature sensor 2 acquire the pressure data and the temperature data of each gas leakage-prone position in the GIS equipment gas chamber in real time, the acquired pressure value, temperature value and position information data are converted by the A/D converter 3 and then sent to the upper computer 4, the upper computer 4 calculates the SF6 gas density in the current GIS equipment gas chamber through a preset adaptive filtering algorithm and a preset temperature compensation algorithm, and further judges whether the SF6 gas density of the current detection position exceeds a preset safety threshold value, if so, a working signal is sent to the alarm module 5 of the corresponding position according to the position information received by the upper computer 4, and the alarm module 5 works and warns the body part in the GIS equipment of the risk of gas leakage.
In this embodiment, whether there is SF6 gas leakage in the GIS equipment can be detected under the condition of continuously opening the standby power supply or stopping the operation, and an alarm can be given at a specific gas leakage position, so that an operator can find out the gas leakage position as soon as possible and overhaul the gas leakage position.
Example 2
In this embodiment, on the basis of the gas leakage detection system for the GIS device provided in embodiment 1, a gas density detection module 6, a micro water density detector 7, a display 8, and a communication module 9 are additionally provided. Fig. 2 is a schematic structural diagram of the gas leakage detection system of the GIS device according to this embodiment.
The gas density detection module 6 that adds in this embodiment sets up in GIS equipment air chamber, and the output of gas density detection module 6 is connected with the input of host computer 4. In the embodiment, the SF6 gas is decomposed into gases such as HF, SO2 and SOF2 under the partial discharge action of the GIS equipment, SO that whether partial discharge exists in the current GIS equipment can be judged by detecting the gas density of the SF6 decomposed gas in the current GIS equipment, and the personal safety of operators is further guaranteed.
The density detection module 6 adopted in the embodiment comprises an HF gas density detector, an SO2 gas density detector, an SOF2 gas density detector, an SO2F2 gas density detector, an SOF4 gas density detector and an S2F10 gas density detector, the upper computer 4 judges according to values such as HF gas density, SO2 gas density, SOF2 gas density, SO2F2 gas density, SOF4 gas density and S2F10 gas density sent by the gas density detection module 6, when the gas density of each component is larger than a safety threshold value of each component preset in the upper computer 4, the upper computer 4 sends a working signal to the alarm module 5, the alarm module 5 works and gives an alarm to warn a worker that partial discharge exists in the current GIS equipment.
In the embodiment, the influence of humidity in the GIS equipment on leaked SF6 gas is considered, the micro water density detector 7 is additionally arranged and is arranged at a gas leakage part in the gas chamber of the GIS equipment, and the output end of the micro water density detector 7 is connected with the input end of the upper computer 4; a humidity threshold is preset in the upper computer 4, and when the current SF6 micro water density detector in the GIS equipment air chamber, which is sent by the micro water density detector 7, is greater than the preset threshold, the upper computer 4 sends a working signal to the alarm module 5.
The display 8 additionally arranged in the embodiment is used for synchronously displaying the current detection result of the upper computer 4 and displaying a corresponding numerical value. Wherein, the input end of the display 8 is connected with the output end of the upper computer 4.
The communication module 9 added in this embodiment is used for uploading data and detection results currently received by the upper computer 4 to the server for storage and monitoring management, wherein the input end of the communication module 9 is connected with the output end of the upper computer 4, and the upper computer 4 uploads the acquired data and the gas density value calculated by adopting the adaptive filtering algorithm and the temperature compensation algorithm to the server for storage and monitoring management through the communication module 9. Communication module 9 in this embodiment adopts one of a GPRS module, a 4G module, and a WIFI module.
In the specific implementation process, the pressure sensor 1 and the temperature sensor 2 acquire air pressure data and temperature data of each part prone to air leakage in the GIS equipment air chamber in real time, the acquired air pressure value, temperature value and position information data are converted by the A/D converter 3 and then sent to the upper computer 4, and meanwhile, the gas density detection module 6 and the micro-water density detector 7 respectively send SF6 density values, oxygen density values and SF6 micro-water density values obtained by detection to the upper computer 4 to be matched with calculation and judgment; the upper computer 4 calculates the SF6 gas density in the current GIS equipment gas chamber through a preset adaptive filtering algorithm and a temperature compensation algorithm, further judges whether the SF6 gas density of the current detection position exceeds a preset safety threshold value, if so, sends a working signal to the alarm module 5 at the corresponding position according to the position information received by the upper computer 4, and the alarm module 5 works and warns the internal part of the GIS equipment of the risk of gas leakage; the upper computer 4 sends the received data, the calculated SF6 gas density and the judgment result to the display 8 for displaying, and meanwhile, the upper computer 4 sends the complaint data to the server through the communication module 9 for storage, monitoring and management.
Example 3
The embodiment provides a gas leakage detection method for a GIS device, which is applied to the gas leakage detection system for the GIS device provided in embodiment 1. Fig. 3 is a flowchart of the gas leakage detection method of the GIS device according to this embodiment.
The method for detecting the gas leakage of the GIS equipment provided by the embodiment comprises the following steps:
s1: the pressure sensor 1 and the temperature sensor 2 acquire an air pressure value and a temperature value in a GIS equipment air chamber in real time, and the acquired air pressure value and temperature value and installation position information of the pressure sensor 1 and the temperature sensor 2 are converted by the A/D converter 3 and then sent to the upper computer 4;
s2: the upper computer 4 calculates the air pressure values and the temperature values of different positions in the GIS equipment air chamber by adopting a self-adaptive filtering algorithm and a temperature compensation algorithm according to the installation position information of the pressure sensor 1 and the temperature sensor 2, and represents the internal SF6 gas density by correcting the actual pressure compensation in the GIS equipment air chamber to 20 ℃;
s3: the upper computer 4 judges according to the calculated SF6 gas density and a preset safety threshold value thereof, when the gas density is larger than the preset safety threshold value, the upper computer 4 sends a working signal to an alarm module of a target position according to the position information of the currently calculated part, and the alarm module 5 works and gives an alarm.
In addition, a gas density detector is adopted to detect the density of each component gas in the GIS equipment, and the density of each component gas comprises: one or more of HF gas density, SO2 gas density, SOF2 gas density, SO2F2 gas density, SOF4 gas density, S2F10 gas density; and then, the gas density of each component is sent to the upper computer 4, the upper computer 4 judges according to the preset gas density safety threshold value of each component, when the gas density of each component is greater than the safety threshold value, the upper computer 4 sends a working signal to the alarm module 5, and the alarm module 5 works and gives an alarm, so that the partial discharge detection of the GIS equipment is realized.
The same or similar reference numerals correspond to the same or similar parts;
the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A GIS equipment gas leakage detection system is characterized by comprising a pressure sensor, a temperature sensor, an A/D converter, an upper computer and an alarm module, wherein the pressure sensor and the temperature sensor are arranged at the position where gas leakage of GIS equipment is easy to occur;
pressure sensor and temperature sensor gather the atmospheric pressure and the temperature at each easy gas leakage position in the GIS equipment gas chamber in real time, send the host computer after the AD conversion with its atmospheric pressure value, temperature value and positional information data of gathering, the host computer calculates the gaseous gas density of SF6 in the current GIS equipment gas chamber through its self-adaptation filter algorithm of predetermineeing and temperature compensation algorithm, judges whether surpass predetermined safety threshold, if, then sends operating signal to the alarm module who corresponds the position according to the positional information that the host computer received, alarm module work and warning GIS equipment exists the gas leakage risk.
2. The GIS device gas leak detection system of claim 1, wherein: the system further comprises a gas density detection module, the gas density detection module is arranged in the GIS equipment air chamber, and the output end of the gas density detection module is connected with the input end of the upper computer.
3. The GIS device gas leak detection system of claim 2, wherein: the gas density detection module comprises one or more of an HF gas density detector, an SO2 gas density detector, an SOF2 gas density detector, an SO2F2 gas density detector, an SOF4 gas density detector and an S2F10 gas density detector.
4. The GIS device gas leak detection system of claim 1, wherein: the system also comprises a micro water density detector, the micro water density detector is arranged in the GIS equipment air chamber, and the output end of the micro water density detector is connected with the input end of the upper computer; and a humidity threshold value is preset in the upper computer, and when the micro water density of the current GIS equipment air chamber sent by the micro water density detector is greater than the preset humidity threshold value, the upper computer sends a working signal to the alarm module.
5. The GIS device gas leak detection system of claim 1, wherein: the system further comprises a display, and the input end of the display is connected with the output end of the upper computer.
6. The GIS device gas leak detection system of claim 1, wherein: the system further comprises a communication module, wherein the input end of the communication module is connected with the output end of the upper computer, and the upper computer uploads the acquired data and the gas density value obtained by calculation of the data through the communication module and the gas density value obtained by calculation of the adaptive filtering algorithm and the temperature compensation algorithm to the server for storage, monitoring and management.
7. The GIS device gas leak detection system of claim 6, characterized in that: the communication module comprises one of a GPRS module, a 4G module and a WIFI module.
8. The GIS device gas leakage detection system of claims 1-7, characterized in that: the alarm module comprises one or more of a buzzer, a warning lamp and an audible and visual alarm.
9. A gas leakage detection method for GIS equipment is characterized by comprising the following steps:
s1: the pressure sensor and the temperature sensor acquire an air pressure value and a temperature value in a GIS equipment air chamber in real time, and the acquired air pressure value, temperature value and mounting position information of the pressure sensor and the temperature sensor are transmitted to an upper computer after A/D conversion;
s2: the upper computer calculates the air pressure values and the temperature values of different positions in the GIS equipment air chamber by adopting a self-adaptive filtering algorithm and a temperature compensation algorithm according to the installation position information of the pressure sensor and the temperature sensor, and the pressure when the actual pressure in the GIS equipment air chamber is compensated and corrected to 20 ℃ currently represents the internal SF6 gas density;
s3: the upper computer judges according to the calculated SF6 gas density and a preset safety threshold value thereof, when the gas density is larger than the preset safety threshold value, the upper computer sends a working signal to an alarm module of a target position according to the position information of the currently calculated part, and the alarm module works and gives an alarm.
10. The GIS device gas leak detection method of claim 9, wherein: in the step S3, the method further includes the steps of: detecting the density of each component gas in the GIS equipment by using a gas density detector, wherein the density of each component gas comprises the following components: one or more of HF gas density, SO2 gas density, SOF2 gas density, SO2F2 gas density, SOF4 gas density, S2F10 gas density; and then sending the gas density of each component to an upper computer, judging by the upper computer according to a preset gas density safety threshold value of each component, sending a working signal to an alarm module by the upper computer when the gas density of each component is greater than the safety threshold value, and sending an alarm when the alarm module works.
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| CN112816363A (en) * | 2021-02-22 | 2021-05-18 | 国网冀北电力有限公司廊坊供电公司 | Novel density meter for switchgear and calculation method of gas density |
| CN112985716A (en) * | 2021-01-18 | 2021-06-18 | 南京航空航天大学 | Aerostat envelope helium leakage monitoring device and method |
| CN114220638A (en) * | 2021-11-23 | 2022-03-22 | 国网山西省电力公司电力科学研究院 | High-voltage wire outlet device for extra-high voltage transformer and reactor and fault diagnosis method thereof |
| CN114220638B (en) * | 2021-11-23 | 2024-06-25 | 国网山西省电力公司电力科学研究院 | High-voltage outlet device for extra-high voltage transformer and reactor and fault diagnosis method thereof |
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Application publication date: 20201103 |
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