CN114235512A - Automatic gas production device and method for power transformer gas relay - Google Patents
Automatic gas production device and method for power transformer gas relay Download PDFInfo
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Abstract
The invention belongs to the technical field of on-line detection of a power transformer gas relay, and particularly relates to an automatic gas production device and method for the power transformer gas relay. The device of the invention comprises: the gas production unit is connected with the gas detection unit. The device can automatically collect the characteristic gas in the gas relay at the initial stage of the transformer failure and confirm whether the light gas alarm is caused by the relay body failure or the internal gas. The internal state of the transformer is analyzed and judged according to the gas components, a tripping signal is given out, the transformer with the fault is withdrawn in time, the accident can be prevented from being further expanded in time, the accident is avoided, the power equipment is prevented from suffering more serious loss, the traditional manual gas production and operation are not needed, and the personal safety of the operating personnel is effectively guaranteed.
Description
Technical Field
The invention belongs to the technical field of on-line detection of a power transformer gas relay, and particularly relates to an automatic gas production device and method for the power transformer gas relay.
Background
At present, most of power transformers in China are oil-immersed transformers, insulating oil is used as an insulating and heat-dissipating medium, and materials such as paperboards, laminated wood and cushion blocks are used as solid insulating parts. In actual operation, the transformer insulating oil and the solid insulating material can generate characteristic gas under the action of electricity and heat and enter the gas relay, and when the gas volume reaches the action volume of the relay, the relay sends out an action signal. According to the relevant regulations, operation and maintenance personnel need to confirm the existence of gas by means of a telescope and the like on site, and manually take out and test the internal gas at the gas production box position. But the practical situation is that whether gas exists inside the transformer or not is not easy to observe due to the installation position of the gas relay; when part of light gas is alarmed, the secondary contact fault causes, but not the fault inside the transformer, so that great psychological burden is brought to operation and maintenance personnel.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an automatic gas production device and method for a power transformer gas relay. The invention aims to realize the purposes of early warning in time, exiting a failed transformer, effectively reducing the accident rate and improving the personal safety of operating personnel at the initial stage of the transformer failure.
The technical scheme adopted by the invention for realizing the purpose is as follows:
automatic gas production device of power transformer gas relay includes: the gas production unit, the control unit, the gas detection unit, the intelligent comprehensive analysis unit and the control panel; one end of the gas production unit is connected with the gas relay through a pipeline, the other end of the gas production unit is connected with the gas detection unit through a pipeline, the other end of the gas detection unit is connected with the intelligent comprehensive analysis unit through a cable, the intelligent comprehensive analysis unit is connected with the communication control unit through a cable, and the communication control unit is connected with the control panel through a cable.
Further, the gas production unit includes: the automatic air extracting device comprises a one-way exhaust valve, an automatic air extracting chamber, an air extracting pump and an air sensor; the top of the automatic gas taking cabin is connected with the top of the gas relay through a metal hose; a one-way exhaust valve is connected between the automatic gas taking cabin and the gas detection cabin, the bottom of the automatic gas taking cabin is connected with a gas pump through a metal pipe, and the automatic gas taking cabin is connected with the gas detection cabin 7 of the gas detection unit through the metal pipe; the bottom of the gas production unit is connected with an oil discharge valve, a floater is also arranged in the gas production unit, the floater is connected with the oil discharge valve through a cable, when gas exists in the gas production unit, the floater sinks until the volume reaches 200mL, the floater sends a signal to the control unit, and the oil discharge valve is opened after receiving the signal; the gas sensor is a chromatographic sensor.
Furthermore, the oil discharge valve is an electromagnetic valve.
Further, the gas detection unit includes: the system comprises a gas sensor, a gas detection cabin and an intelligent comprehensive analysis unit; the gas detection unit is internally provided with a gas sensor for analyzing the concentration of each characteristic gas and sending the detection result to the intelligent comprehensive analysis unit through a cable; the intelligent comprehensive analysis unit analyzes the received detection result and sends the analysis result to the communication control unit through a cable; and storing the analysis result through the communication control unit, remotely transmitting the analysis result to the master control through the optical fiber, and simultaneously sending a corresponding alarm action signal.
Further, the control unit includes: the communication control unit is used for receiving the volume signal and the alarm signal; the communication control unit is used for receiving the light gas alarm signal, controlling the opening and closing of the electromagnetic valve and sending a signal to the control panel and the main control room; the communication control unit is connected with the gas relay, the electromagnetic valve, the control panel and the main control room through cables.
Furthermore, the intelligent comprehensive analysis unit analyzes the result through an internal CPU after receiving the detection result provided by the detection unit, and sends the analysis result out in an electric signal form.
Furthermore, a metal outer cover is arranged outside the gas production device.
The automatic gas production method for the power transformer gas relay comprises the following steps:
step 1, after receiving an alarm signal sent by a power transformer gas relay, a control unit automatically opens an oil discharge valve at the bottom of a gas production unit;
step 2, after the oil drain valve is opened, insulating oil in the gas production unit flows out through the oil drain valve;
and 4, if no gas exists in the gas relay, the floater in the gas production unit cannot sink, the oil discharge valve is automatically closed after the opening time of the oil discharge valve reaches a set value, and meanwhile, a false alarm signal is sent to the main control room and displayed on the control panel.
Furthermore, the automatic gas recovery method for the power transformer gas relay comprises the following steps:
when the power transformer gas relay gives an alarm, a gas pump in the automatic gas production unit is started to introduce characteristic gas in the gas relay into the gas detection unit; the controller of the detection unit controls the volume of the gas entering the gas detection unit, sends a signal to the automatic exhaust valve and exhausts redundant gas;
the detection unit detects the gas sample by using the gas chromatography, and sends a detection result to the intelligent comprehensive analysis unit in the form of an electric signal;
the intelligent comprehensive analysis unit analyzes the gas detection result, judges whether the transformer has internal faults or not and sends the judgment result to the control unit through a cable in the form of an electric signal;
the intelligent comprehensive analysis unit analyzes the fault types, and the analysis method comprises the following steps: characteristic gas method and gas content ratio.
A computer storage medium having a computer program stored thereon, the computer program when executed by a processor implementing the steps of the method for automatic gas recovery for a power transformer gas relay.
The invention has the following beneficial effects and advantages:
the on-line detection device for the characteristic gas in the power transformer gas relay can automatically collect the characteristic gas in the gas relay at the initial stage of the transformer failure and confirm whether the light gas alarm is caused by the relay body failure or the internal gas. The internal state of the transformer is analyzed and judged according to the gas components, a tripping signal is given out, the transformer with the fault is withdrawn in time, the accident can be prevented from being further expanded in time, the accident is avoided, the power equipment is prevented from suffering more serious loss, the traditional manual gas production and operation are not needed, and the personal safety of the operating personnel is effectively guaranteed.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of an automatic gas production device of a power transformer gas relay according to an embodiment of the present invention;
fig. 2 is a flowchart of an automatic gas production method for a power transformer gas relay according to an embodiment of the present invention.
In the figure:
the device comprises a transformer 1, a gas relay 2, a one-way exhaust valve 3, an automatic gas taking cabin 4, an air pump 5, a gas sensor 6, a gas detection cabin 7, an intelligent comprehensive analysis unit 8, a communication control unit 9, a volume signal 10 and an alarm signal 11.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The solution of some embodiments of the invention is described below with reference to fig. 1-2.
Example 1
The invention further provides an embodiment, which is an automatic gas production device for a power transformer gas relay, and as shown in fig. 1, the invention is a schematic structural diagram of the automatic gas production device for the power transformer gas relay according to the embodiment of the invention.
The gas production device of the invention comprises: gas production unit, control unit, gas detection unit, intelligent comprehensive analysis unit 8 and control panel. Signals are transmitted among the gas production unit, the control unit, the gas detection unit, the intelligent comprehensive analysis unit 8 and the control panel through cables. One end of the gas production unit is connected with the gas relay through a metal hose, the other end of the gas production unit is connected with the gas detection unit through a metal hose, the other end of the gas detection unit is connected with the intelligent comprehensive analysis unit 8 through a cable, the intelligent comprehensive analysis unit 8 is connected with the communication control unit 9 through a cable, and the communication control unit 9 is connected with the control panel through a cable.
Wherein, the gas production unit includes: a one-way exhaust valve 3, an automatic air-taking chamber 4, an air pump 5 and a gas sensor 6. The top of the automatic gas taking cabin 4 is connected with a gas taking hole at the top of the gas relay 2 through a metal hose; a one-way exhaust valve 3 is arranged between the automatic gas taking chamber and the air pump 5, and the bottom of the automatic gas taking chamber 4 is connected with the air pump 5 through a metal pipe and used for conveying characteristic gas. The automatic gas taking cabin 4 is connected with a gas detection cabin 7 of the gas detection unit through a metal pipe.
An oil discharge valve is installed at the bottom of the gas production unit, and the oil discharge valve adopts an electromagnetic valve; the gas production unit is internally provided with a floater, the floater is connected with the oil discharge valve through a cable, when gas exists in the gas production unit, the floater sinks, the floater sends a signal to the control unit until the volume reaches 200mL, and the oil discharge valve is opened after receiving the signal.
Wherein the gas detection unit includes: the gas sensor 6, the gas detection cabin 7 and the intelligent comprehensive analysis unit 8. A gas sensor 6 is arranged in the gas detection unit, the gas sensor 6 adopts an oil chromatographic sensor and is used for analyzing the concentration of each characteristic gas, and a detection result is sent to an intelligent comprehensive analysis unit 8 through a cable; the intelligent comprehensive analysis unit 8 analyzes the received detection result and sends the analysis result to the communication control unit 9 through a cable; the analysis result is stored by the communication control unit 9, and is transmitted to the main control unit through the optical fiber, and meanwhile, a corresponding alarm action signal is sent. The gas sensor 6 is connected with a gas detection cabin 7 through a metal hose and is connected with an intelligent comprehensive analysis unit 8 through a cable.
The intelligent comprehensive analysis unit 8 receives the detection result provided by the detection unit, analyzes the result through an internal CPU (central processing unit), mainly adopts an oil chromatography three-ratio method, a characteristic gas method and the like as the analysis basis, and sends out the analysis result in an electric signal form.
Wherein the control unit includes: a communication control unit 9, a volume signal 10 and an alarm signal 11. One end of the communication control unit 9 is connected with the volume signal 10, and the other end of the communication control unit 9 is connected with the alarm signal 11. The communication control unit 9 is used for receiving light gas alarm signals, controlling the opening and closing of the electromagnetic valve and sending signals to the control panel and the main control room. The communication control unit 9 is connected with the gas relay, the electromagnetic valve, the control panel and the main control room through cables.
Wherein the control panel includes: LED pilot lamp, button. The control panel is provided with an LED indicating lamp for indicating whether gas enters the gas production unit; the control panel is also provided with a key for resetting the device.
In specific implementation, the device is arranged on the side surface of the transformer 1, the installation height is convenient to observe, and smooth gas introduction into the device is ensured; the top of the gas production unit is connected with the top of the gas relay through a metal hose.
The automatic gas production device for the power transformer gas relay in the embodiment of the invention analyzes the gas in the transformer gas relay, judges whether the light gas alarm is caused by the internal gas or the false alarm, automatically collects the internal gas at the same time, and waits for a tester to extract and test.
The working principle of the invention is as follows:
when the power transformer normally operates, the device consists of a gas production unit, a control unit and a control panel, wherein the gas production unit is connected with the top of the gas relay through a metal hose, and the inside of the gas production unit is filled with insulating oil.
When the gas relay sends out light gas alarm signal, the control unit of the device will receive the signal and automatically start the oil discharge valve at the bottom of the gas production unit.
If gas exists in the gas relay and is influenced by oil pressure, the gas is guided into the gas production unit, and the floater in the device sinks to send out an alarm signal. When the gas volume in the device reaches 200ml, the bottom oil drain valve will automatically close, completing the sampling and indicating at the control panel.
If the gas relay false alarms, the inner floater cannot sink, the false alarm is confirmed, the control unit automatically closes the bottom oil discharge valve, and meanwhile, the false alarm signal is sent to the main control room and indicated by the control panel.
Example 2
The invention also provides an embodiment, which is an automatic gas production device of the power transformer gas relay, wherein a metal outer cover is arranged outside the gas production device and used for integrating the automatic gas production unit, the gas detection unit, the intelligent comprehensive analysis unit and the control unit and covering various components of the device in the gas production device.
Example 3
The invention further provides an embodiment, which is an automatic gas production method for a power transformer gas relay, as shown in fig. 2, and fig. 2 is a flowchart of the automatic gas production method for the power transformer gas relay according to the embodiment of the invention.
The method comprises the following steps:
step 1, after receiving an alarm signal sent by a power transformer gas relay, a control unit automatically opens an oil discharge valve at the bottom of a gas production unit;
step 2, after the oil drain valve is opened, insulating oil in the gas production unit flows out through the oil drain valve;
When the gas relay sends a light gas alarm action signal, the control unit of the automatic gas production device of the gas relay of the power transformer receives the signal and automatically starts the oil discharge valve at the bottom of the gas production unit.
If gas exists in the gas relay and is influenced by oil pressure, the gas is guided into the gas production unit, and the floater in the device sinks to send out an alarm signal.
When the gas volume in the device reaches 200ml, the bottom oil drain valve will automatically close, completing the sampling and indicating at the control panel.
If the gas relay false alarms, the inner floater cannot sink, the false alarm is confirmed, the control unit automatically closes the bottom oil discharge valve, and meanwhile, the false alarm signal is sent to the main control room and indicated by the control panel.
Example 4
The invention also provides an embodiment, which is an automatic gas production method for the gas relay of the power transformer, and as an embodiment of the invention, after the gas relay of the power transformer gives an alarm, a gas pump in the automatic gas production unit is started, and then characteristic gas in the gas relay is introduced into a gas detection unit; the controller of the detection unit controls the volume of the gas entering the gas detection unit and sends a signal to the automatic exhaust valve, so that redundant gas can be exhausted.
Example 5
The invention further provides an embodiment, which is an automatic gas collection method for the gas relay of the power transformer.
The intelligent comprehensive analysis unit analyzes the gas detection result, judges whether the transformer has internal faults or not, and sends the judgment result to the communication control unit through a cable in an electric signal mode.
The raw materials in the power transformer mainly comprise insulating oil and various paper and wood insulating parts, when the inside of the power transformer is in fault, under the action of heat and electricity, C-H bonds, C-C bonds and C-O bonds of the power transformer are broken and rapidly recombined through complex chemical reactions to form hydrogen, carbon monoxide, carbon dioxide, hydrocarbon gas and the like. After the gas enters the gas relay, the gas relay sends out a light gas alarm along with the increase of the volume of the gas (the action volume of the gas relay is 250mL-300 mL). Whether a fault exists in the transformer or not and the fault type can be judged by detecting each characteristic gas component, and the attention value of each characteristic gas is shown in table 1:
table 1 unit of attention to the dissolved gas content in the plant in operation: mu.L/L
When the gas composition exceeds the noted value, the transformer is suspected of internal failure, and the transformer failure types mainly include arc discharge, oiled paper overheating, oil overheating, and the like.
The intelligent comprehensive analysis unit analyzes the fault type, and the analysis method comprises the following steps: characteristic gas method and gas content ratio.
(1) The characteristic gas method: the primary and secondary characteristic gases generated by the different fault types can be summarized in table 2, from which the fault type of the device can be inferred.
TABLE 2 gas generation for different fault types
| Type of failure | Gas of main character | Gas of secondary character |
| Oil superheating | CH4，C2H4 | H2，C2H6 |
| Oil and paper superheating | CH4，C2H4，CO | H2，C2H6，CO2 |
| Partial discharge in oiled paper insulation | H2，CH4，CO | C2H4，C2H6，C2H2 |
| Spark discharge in oil | H2，C2H2 | |
| Electric arc in oil | H2，C2H2，C2H4 | CH4,C2H6 |
| Electric arc in oil and paper | H2，C2H2，C2H4，CO | CH4,C2H6，CO |
(2) Gas ratio method: the gas ratio method adopted by the invention is mainly a three-ratio method, and the method is summarized on the basis of thermodynamics and practice and is a method for judging the fault type by utilizing the coding combination of three-ratio values of hydrogen and hydrocarbon gas.
TABLE 3 coding rules by three-ratio method
TABLE 4 Fault type determination method
By the aid of the method, diagnosis of the fault type of the transformer is achieved, and the communication control unit stores diagnosis results and sends the diagnosis results to the main control room through the optical fibers. If the internal fault of the transformer is judged, the internal fault is directly sent to the circuit breakers on all sides, so that the main transformer is quitted from operation. The communication control unit is provided with a control panel, and the control panel comprises an indicator light and a buzzer and is used for alarming after a fault; the control panel is also provided with keys for modifying threshold values of the alarm signals and the action signals, sending control instructions and the like.
Example 6
Based on the same inventive concept, an embodiment of the present invention further provides a computer storage medium, where a computer program is stored on the computer storage medium, and when the computer program is executed by a processor, the steps of the method for automatically collecting gas in a power transformer gas relay according to embodiments 3, 4, or 5 are implemented.
In the present invention, the terms "connected" and "fixed" should be interpreted broadly, for example, the term "connected" may be a fixed connection, a detachable connection, or an integral connection. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the indicated devices or units must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. Automatic gas production device of power transformer gas relay, characterized by: the method comprises the following steps: the gas production unit, the control unit, the gas detection unit, the intelligent comprehensive analysis unit (8) and the control panel; one end of the gas production unit is connected with the gas relay (2) through a pipeline, the other end of the gas production unit is connected with the gas detection unit through a pipeline, the other end of the gas detection unit is connected with the intelligent comprehensive analysis unit (8) through a cable, the intelligent comprehensive analysis unit (8) is connected with the communication control unit (9) through a cable, and the communication control unit (9) is connected with the control panel through a cable.
2. The automatic gas production device of the power transformer gas relay as claimed in claim 1, wherein: the gas production unit comprises: the device comprises a one-way exhaust valve (3), an automatic air-taking chamber (4), an air pump (5) and a gas sensor (6); the top of the automatic gas taking cabin (4) is connected with the top of the gas relay (2) through a metal hose; a one-way exhaust valve (3) is connected between the automatic gas taking cabin and the gas detection unit, the bottom of the automatic gas taking cabin (4) is connected with a gas pump (5) through a metal pipe, and the automatic gas taking cabin (4) is connected with a gas detection cabin (7) of the gas detection unit through the metal pipe; the bottom of the gas production unit is connected with an oil discharge valve, a floater is also arranged in the gas production unit, the floater is connected with the oil discharge valve through a cable, when gas exists in the gas production unit, the floater sinks until the volume reaches 200mL, the floater sends a signal to the control unit, and the oil discharge valve is opened after receiving the signal; the gas sensor (6) is a chromatographic sensor.
3. The automatic gas production device of the power transformer gas relay as claimed in claim 2, wherein: the oil drain valve is an electromagnetic valve.
4. The automatic gas production device of the power transformer gas relay as claimed in claim 1, wherein: the gas detection unit includes: the gas detection device comprises a gas sensor (6), a gas detection cabin (7) and an intelligent comprehensive analysis unit (8); the gas detection unit is internally provided with a gas sensor (6) for analyzing the concentration of each characteristic gas and sending the detection result to the intelligent comprehensive analysis unit (8) through a cable; the intelligent comprehensive analysis unit (8) analyzes the received detection result and sends the analysis result to the communication control unit (9) through a cable; the analysis result is stored through the communication control unit (9), and is transmitted to the main control through the optical fiber, and meanwhile, a corresponding alarm action signal is sent.
5. The automatic gas production device of the power transformer gas relay as claimed in claim 1, wherein: the control unit includes: a communication control unit (9), a volume signal (10) and an alarm signal (11); the communication control unit (9) is used for receiving a light gas alarm signal, controlling the opening and closing of the electromagnetic valve and sending a signal to the control panel and the main control room; the communication control unit (9) is connected with the gas relay, the electromagnetic valve, the control panel and the main control room through cables.
6. The automatic gas production device of the power transformer gas relay as claimed in claim 1, wherein: and the intelligent comprehensive analysis unit (8) analyzes the result through an internal CPU after receiving the detection result provided by the detection unit, and sends out the analysis result in an electric signal form.
7. The automatic gas production device of the power transformer gas relay as claimed in claim 1, wherein: and a metal outer cover is arranged outside the gas production device.
8. The automatic gas production method of the power transformer gas relay is characterized by comprising the following steps: the method comprises the following steps:
step 1, after receiving an alarm signal sent by a power transformer gas relay, a control unit automatically opens an oil discharge valve at the bottom of a gas production unit;
step 2, after the oil drain valve is opened, insulating oil in the gas production unit flows out through the oil drain valve;
step 3, if gas exists in the gas relay, the gas enters the gas production unit, a floater in the gas production unit sinks, and the oil discharge valve is automatically closed when the volume of the gas reaches 200 ml;
and 4, if no gas exists in the gas relay, the floater in the gas production unit cannot sink, the oil discharge valve is automatically closed after the opening time of the oil discharge valve reaches a set value, and meanwhile, a false alarm signal is sent to the main control room and displayed on the control panel.
9. The automatic gas recovery method for the power transformer gas relay as claimed in claim 8, wherein:
when the power transformer gas relay gives an alarm, a gas pump in the automatic gas production unit is started to introduce characteristic gas in the gas relay into the gas detection unit; the controller of the detection unit controls the volume of the gas entering the gas detection unit, sends a signal to the automatic exhaust valve and exhausts redundant gas;
the detection unit detects the gas sample by using the gas chromatography, and sends a detection result to the intelligent comprehensive analysis unit in the form of an electric signal;
the intelligent comprehensive analysis unit analyzes the gas detection result, judges whether the transformer has internal faults or not and sends the judgment result to the control unit through a cable in the form of an electric signal;
the intelligent comprehensive analysis unit analyzes the fault types, and the analysis method comprises the following steps: characteristic gas method and gas content ratio.
10. A computer storage medium, characterized by: the computer storage medium has stored thereon a computer program which, when executed by a processor, performs the steps of the method for automatic gas recovery for a power transformer gas relay of claims 8-9.
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