CN111103407A - Device, system and method for automatically taking gas from transformer light gas and monitoring transformer light gas in real time - Google Patents
Device, system and method for automatically taking gas from transformer light gas and monitoring transformer light gas in real time Download PDFInfo
- Publication number
- CN111103407A CN111103407A CN202010066389.5A CN202010066389A CN111103407A CN 111103407 A CN111103407 A CN 111103407A CN 202010066389 A CN202010066389 A CN 202010066389A CN 111103407 A CN111103407 A CN 111103407A
- Authority
- CN
- China
- Prior art keywords
- gas
- transformer
- control unit
- unit
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital
Abstract
The invention provides a device, a system and a method for automatically taking gas and monitoring light gas of a transformer in real time, wherein the device comprises a control unit, a valve opening unit and a gas analysis unit, wherein: the control unit receives a light gas signal of the transformer and controls the valve opening unit and the gas analysis unit; the valve opening unit opens and/or closes an exhaust port of the gas relay according to a control signal of the control unit; the gas analysis unit is connected with the gas outlet of the gas relay, analyzes the gas discharged from the gas outlet and outputs an analysis result to the control unit; and the control unit outputs a signal according to the analysis result. The gas relay can realize full-automatic gas taking and real-time detection of the gas relay, save manpower and material resources and ensure the safety of workers; the alarm has double alarm functions, and avoids the waste of manpower and material resources caused by false alarm of light gas; the triggering mode of the disconnection of the transformer can be controlled according to the needs of users, and the working mode is flexible.
Description
Technical Field
The invention relates to the technical field of transformer accessories, in particular to a device, a system and a method for automatically taking gas and monitoring light gas of a transformer in real time.
Background
The gas relay, also called as gas relay, is a protection device for transformer, it is installed in the pipeline between the oil conservator and oil tank of the transformer, when the transformer is in internal fault, the gas relay contact acts to connect the corresponding protection control loop, can avoid the occurrence of serious accident.
The gas protection is divided into light gas protection and heavy gas protection, and the action principles of the light gas protection and the heavy gas protection are different. The light gas protection is that the oil in the transformer is decomposed to generate gas, the gas is gathered in the downward opening cup, so that the opening cup floats upwards under the buoyancy action of the transformer oil to be connected with the relay, and then an alarm signal is sent out, the light gas protection reacts that a slight fault occurs in the transformer, and the transformer oil is heated and decomposed to generate gas. The heavy gas protection is that the transformer oil is heated and expands rapidly to impact an oil conservator due to a serious fault in the transformer, an inner baffle of the heavy gas is opened by a certain angle, a relay is switched on, a protection element is started, and the transformer is cut off automatically.
The operating regulations of power transformers (DL/T572-2010) stipulate that a transformer gas relay needs to be provided with two contacts, namely light gas and heavy gas, and in a normal operating state, the light gas is put into an alarm state, and the heavy gas is put into a trip state. When the gas protection signal acts, the transformer should be immediately checked to check whether the gas protection signal is caused by air accumulation, oil level reduction, secondary circuit failure or transformer internal failure. If gas exists in the gas relay, the gas quantity is recorded, the color of the gas is observed, whether the test is combustible or not is observed, and gas and oil samples are taken for chromatographic analysis. If the gas in the gas relay is colorless, odorless and incombustible, and the gas is judged to be air by chromatographic analysis, the transformer can continue to operate and the gas inlet defect can be eliminated in time. If the gas is combustible or the analysis result of the gas dissolved in the oil is abnormal, comprehensive judgment is carried out to determine whether the transformer is shut down.
At present, gas sampling work in the gas relay needs to be carried out manually, and after a light gas alarm signal is received, workers need to be dispatched to a fault site in time to carry out gas sampling. Artificial gas sampling has a number of drawbacks: firstly, the working requires operators to correctly master and implement the sampling operation method, otherwise the sampling accuracy is affected, and meanwhile, the sampling operation method needs cooperation of multiple persons, manually records the gas quantity, observes the color of the gas and determines whether the experiment is combustible, so that the defect of low accuracy exists; secondly, the gas relay is generally arranged at a high position of about 3 meters, and the transformer is electrified, so that the danger of falling from high altitude and electric shock of a human body exists in manual gas taking; thirdly, when the weather is bad or the road is far away, the manual gas taking work cannot be ensured to be carried out in time, and serious faults can be caused; fourthly, after manual gas taking, gas loss may occur in each link of gas storage, transportation, laboratory analysis and the like, so that an analysis result is influenced, and the accident is enlarged due to wrong judgment; fifthly, if the analysis result is air after manual gas taking, namely a false alarm signal is sent by the gas relay, manpower and material resources are wasted.
Eighteen grid major accident countermeasures (national grid equipment No. 2018 979) 9.2.3.5 of national grid company stipulate: an oil-immersed transformer with 220kV and above voltage class and a 110 (66) kV oil-immersed transformer with particularly important positions or insulation defects are provided with an online monitoring device for dissolved gas in multi-component oil. However, the online monitoring device for the dissolved gas in the multi-component oil is high in price, cannot be popularized comprehensively, the analysis time is too long, especially when serious overheating and discharging faults occur in the running transformer, the transformer oil is decomposed to generate a large amount of low molecular gases, such as methane, ethane, ethylene, acetylene, hydrogen, carbon monoxide, carbon dioxide and the like, the generation speed of the gases is high, the gases do not reach the dissolution in the transformer oil and move upwards, and the gases are accumulated in a gas relay, so that the accuracy of the analysis result of the online monitoring device for the dissolved gas in the multi-component oil cannot be guaranteed.
The full-automatic gas taking and real-time online detection of the light gas of the transformer are realized, the gas components are correctly recorded, analyzed and judged, whether the transformer has internal faults or not is judged according to the gas components and timely processed, and the improvement of the safety of the transformer becomes more important.
Disclosure of Invention
In view of the above-discussed shortcomings and disadvantages of the prior art, it is an object of the present invention to at least address one or more of the above-discussed problems in the prior art.
The invention provides a device for automatically taking gas and monitoring light gas of a transformer in real time, which adopts the following technical scheme.
The utility model provides a light gas of transformer is automatic to get gas and real time monitoring device, includes the control unit, still includes opens valve unit and gaseous analysis unit, wherein:
the control unit receives a light gas signal of the transformer and controls the valve opening unit and the gas analysis unit;
the valve opening unit opens and/or closes an exhaust port of the gas relay according to a control signal of the control unit;
the gas analysis unit is connected with the gas outlet of the gas relay, analyzes the gas discharged from the gas outlet and outputs an analysis result to the control unit.
Preferably, the valve opening unit comprises a thimble transmission part, and the thimble transmission part presses and/or rotates a thimble of an air plug of the gas relay.
Preferably, in any of the above schemes, after receiving the light gas signal of the transformer, the control unit sends a control signal to the valve opening unit to control the ejector pin transmission component to act, so that the gas relay exhaust port starts to exhaust.
Preferably, in any of the above schemes, after receiving the light gas signal of the transformer, the control unit controls the gas analysis unit to start analyzing the collected gas.
Preferably, in any of the above embodiments, the gas analysis unit analyzes the concentration and/or growth rate of gas in the collected gas.
Preferably in any of the above embodiments, the gas comprises H2、CO、CO2、CH4、C2H4、C2H2、C2H6、O2、N2Micro water and any other gases that may be generated upon failure of the transformer.
In any of the above schemes, preferably, when the gas analysis result is gas, the control unit controls to output an alarm signal.
In any of the above schemes, preferably, when the gas analysis result is gas, the control unit controls to output an alarm signal and a trip signal.
Preferably, in any of the above schemes, the device for automatically taking gas and monitoring light gas in real time of the transformer further comprises a gas collection unit, one end of the gas collection unit is connected with the gas plug exhaust port of the gas relay through a gas transmission component, the other end of the gas collection unit is connected with the gas analysis unit through a gas transmission component, and after the gas exhaust port of the gas relay starts to exhaust, the gas collection unit collects the gas and transmits the gas to the gas analysis unit.
Preferably, in any of the above schemes, the gas analysis unit includes a gas chamber cleaning component, and after the control unit receives the gas analysis result, the control unit controls the gas chamber cleaning component to operate according to the set time, so as to clean the gas chamber in the gas analysis unit.
In any of the above schemes, preferably, the device for automatically taking gas and monitoring light gas in real time of the transformer further comprises a power supply unit, which is used for providing electric energy for the control unit, the valve opening unit and the gas analysis unit after being converted from an external power supply.
Preferably, in any of the above schemes, the external power supply includes at least one of a 5V-380V ac/dc access power supply, a battery and a photovoltaic panel.
The invention provides an on-line detection system for light gas of a transformer, which comprises an automatic gas taking and real-time monitoring device for the light gas of the transformer, a communication unit and a server, wherein the automatic gas taking and real-time monitoring device for the light gas of the transformer is connected with the server through the communication unit, and sends a gas analysis result to the server and/or receives data sent by the server.
Preferably, the server is configured to perform at least one of display, storage, further analysis and query on the received gas analysis result, and determine the transformer fault type according to the further analysis.
Preferably, in any of the above schemes, the server automatically takes gas from the transformer light gas according to the transformer fault type and outputs a control signal to the real-time monitoring device to control the transformer trip protection.
The third aspect of the invention provides an online detection method for light gas of a transformer, which is used for an automatic gas taking and real-time monitoring device and/or system for the light gas of the transformer, and comprises the following steps:
the control unit receives a light gas signal of the gas relay;
the control unit sends control signals to the valve opening unit and the gas analysis unit;
the valve opening unit acts to open the exhaust port of the gas relay;
the gas analysis unit analyzes the gas discharged from the gas outlet and returns the analysis result to the control unit;
the control unit controls whether to output an alarm signal according to the analysis result.
Preferably, when the analysis result is air, the control unit does not output the alarm signal, and when the analysis result is gas, the control unit outputs the alarm signal.
Preferably, in any of the above schemes, the method further includes the step that the control unit controls whether to trip according to an analysis result, when the analysis result is air, the control unit does not control tripping, and when the analysis result is gas, the control unit controls tripping.
Preferably, in any of the above schemes, the method further includes the step that the control unit sends the gas analysis result to a server, the server further analyzes the gas analysis result, judges whether tripping is needed according to the further analysis result, and sends a tripping control signal to the control unit when tripping is judged to be needed, and the control unit controls tripping according to the control signal.
Preferably, in any of the above schemes, the method further comprises the step that the control unit controls the operation of the gas chamber cleaning component to clean the gas chamber in the gas analysis unit.
The technical scheme of the invention has the beneficial effects that:
1. the gas is safely taken. The gas taking operation on the spot of personnel is not needed, and the personal safety of the personnel can be effectively ensured.
2. And (6) automatically taking gas. The non-manual full-automatic gas taking function can be realized according to the set working time point (set on demand and in real time), the manual workload is replaced, and the working efficiency is improved.
3. And (5) detecting in real time. The gas is directly taken on site without oil-gas separation, and the gas components are analyzed in real time, so that the accuracy of the test is ensured. Real-time detection of H2、CO、CO2、CH4、C2H4、C2H2、C2H6、O2、N2The concentration and the growth rate of the gas that probably produces when little water and any other transformer trouble, gas sensor part are modular design, can freely arrange according to the demand, are not limited to following gas: h2、CO、CO2、CH4、C2H4、C2H2、C2H6、O2、N2。
4. The action is quick, and the user can freely select to send out tripping operation or alarm to prevent the fault from being enlarged.
5. Can be repeatedly used. And the state of the gas released by the transformer is truly reflected by a quantitative cleaning and cyclic sampling mode.
6. Is stable and efficient. The gas detection technology has high stability and high precision, and the error range is +/-10%.
7. Mature and reliable communication mode: the wireless communication modes such as WiFi, Bluetooth, LoRa, 2G, 3G, 4G and 5G and the wired communication modes such as optical fiber cables are supported, and the remote data transmission is supported by adopting a standard network protocol.
8. The data acquisition reliability is high, and the automatic calibration is realized.
9. The data display and query modes are diversified, reports and trend graphs are provided, and the storage life of historical data is more than 10 years.
10. The environmental adaptability is strong, and the method can be applied to high-cold, high-temperature, high-humidity and high-altitude areas.
11. The anti-interference performance is high, the maintenance is free, and the electromagnetic compatibility can reach the IEC4 level electromagnetic anti-interference standard and the electromagnetic compatibility level.
12. Two-stage alarm function is provided, and the alarm signal can be transmitted remotely.
13. The open database can be connected to the power system local area network.
14. The security and protection reliable integrated system comprises hardware equipment, a related algorithm and a communication encryption security module.
15. The detection and analysis part supports the edge calculation function, has the autonomous analysis function and supports ubiquitous Internet of things access.
16. Cloud processing and big data ai analysis are supported.
17. And in a multi-power supply selection mode, an external power supply (comprising 5V-380V alternating current and direct current access power supply, battery power supply and photovoltaic panel power supply) is accessed through a power supply unit.
18. The valve opening unit supports the transmission: push type, rotation type.
19. The gas collection unit supports: and the functions of backflow prevention and blockage prevention are achieved.
20. The storage time of the optional gas in the gas chamber is supported, and an artificial gas taking verification interface is provided.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of an apparatus for automatically drawing gas and monitoring light gas in real time for a transformer according to the present invention.
Fig. 2 is a schematic structural diagram of another embodiment of the device for automatically taking gas and monitoring light gas of a transformer in real time according to the present invention.
Fig. 3 is an installation schematic diagram of the transformer light gas automatic gas taking and real-time monitoring device according to the embodiment shown in fig. 2.
Fig. 4 is an electrical schematic diagram of the transformer light gas automatic gas-taking and real-time monitoring device according to the embodiment shown in fig. 2.
Fig. 5 is a schematic structural diagram of a system for automatically taking light gas and monitoring the light gas in real time according to a preferred embodiment of the present invention.
Fig. 6 is a schematic flow chart of a method for automatically taking gas and monitoring light gas of a transformer in real time according to a preferred embodiment of the present invention.
Fig. 7 is a schematic flow chart of another embodiment of the method for automatically taking gas and monitoring light gas of a transformer in real time according to the present invention.
Fig. 8 is a schematic flow chart of a method for automatically taking gas and monitoring light gas of a transformer in real time according to another embodiment of the invention.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the following examples. The term "coupled" in the following description includes direct coupling and indirect coupling via other components, including electrical coupling via wires, and also includes coupling or communication via connectors, as well as other coupling schemes that allow two components to be brought into a relationship.
In particular, in this document, the term "gas" refers to a fault gas H generated when a transformer fails2、CO、CO2、CH4、C2H4、C2H2、C2H6、O2、N2At least one of the gases possibly generated by the fault of any transformer, micro water and the like, is not a single finger CH4A gas.
Example 1
As shown in fig. 1, the device for automatically taking gas and monitoring gas in real time for transformer light gas comprises a control unit 11, a valve opening unit 12, a gas analysis unit 13 and a power supply 14, wherein the control unit 11 receives a signal of transformer light gas and controls the valve opening unit 12 and the gas analysis unit 13; the valve starting unit 12 opens and/or closes an exhaust port of the gas relay according to a control signal of the control unit 11; the gas analysis unit 13 is connected with the gas outlet of the gas relay, analyzes the gas discharged from the gas outlet, and outputs an analysis result to the control unit 13; the power supply unit 14 is used for providing electric energy for the control unit 11, the valve opening unit 12 and the gas analysis unit 13 after being converted by an external power supply, and the external power supply adopts a 220V alternating current access power supply. And a backflow-preventing and blockage-preventing component is arranged at the air inlet of the gas analysis unit 13.
The valve opening unit 12 comprises a thimble transmission part, the thimble transmission part can rotate a thimble of an air plug of the buchholz relay, and the operation mode is suitable for the buchholz relay which needs to be deflated by rotating the air plug. After the control unit 11 receives the light gas signal of the transformer, a control signal is sent to the valve opening unit 12 to control the ejector pin transmission part to act, the ejector pin of the gas plug of the gas relay is rotated, the gas plug is unscrewed, and then the gas outlet of the gas relay starts to exhaust. The gas analysis unit 13 is directly connected to the gas outlet through a gas transmission member, and the gas discharged from the gas outlet enters the gas analysis unit. The control unit 11 sends a control signal to the valve opening unit 12 and sends a control signal to the gas analysis unit 13 at the same time, and controls the gas analysis unit 13 to start analyzing the collected gas. The gas analyzing unit 13 analyzes H in the collected gas2、CO、CO2、CH4、C2H4、C2H2、C2H6、O2、N2The concentration and/or the growth rate of at least one gas in the gases possibly generated when any transformer fails, micro water and the like, and further judging whether the collected gases are air or gas. The gas analysis unit 13 feeds back the analysis result to the control unit 11, and if the gas analysis result is air, the light gas signal is indicated as light gasFalse alarm signal, the control unit controls not to send other signals; if the gas analysis result is gas, the light gas signal is not a false alarm signal, and the control unit controls to output an alarm signal and connects an alarm hard contact.
The gas analysis unit 13 includes a gas chamber cleaning component, and after the control unit 11 receives the gas analysis result, the gas chamber cleaning component is controlled to operate according to the set time, so as to clean the gas chamber in the gas analysis unit 13, remove the gas collected this time, and prepare for the next gas analysis operation.
The gas analysis unit 13 is also provided with a gas taking verification interface component, if the gas in the gas chamber needs to be manually analyzed and verified to confirm faults, the gas chamber can be started to clean after a long time is set, the gas in the gas chamber can be kept for enough time, a worker has enough time to reach the gas in the gas chamber on site, meanwhile, a manual gas taking start button and a manual starting button of the gas chamber cleaning component are arranged, the worker can conveniently take gas manually, and after the worker collects the gas in the gas chamber, the gas chamber is cleaned by manually starting the gas chamber cleaning component.
The device for automatically taking gas from light gas of the transformer and monitoring the gas in real time further comprises an acousto-optic alarm unit 10, wherein the acousto-optic alarm unit 10 is connected with the control unit 11, and when the control unit 11 sends out an alarm signal, the acousto-optic alarm unit 10 is controlled to carry out acousto-optic alarm at the same time, so that the transformer is prompted to have light gas faults on site and nearby personnel, and the transformer is convenient for the workers to further handle the light gas faults.
Example 2
As shown in fig. 2, the device for automatically taking gas and monitoring gas in real time for transformer light gas comprises a control unit 11, a valve opening unit 12, a gas analysis unit 13, a power supply unit 14 and a gas collection unit 15, wherein the control unit 11 receives a signal of transformer light gas and controls the valve opening unit 12 and the gas analysis unit 13; the valve starting unit 12 opens and/or closes an exhaust port of the gas relay according to a control signal of the control unit 11; one end of the gas collection unit 14 is connected with the gas plug exhaust port of the gas relay through a gas transmission component, the other end of the gas collection unit is connected with the gas analysis unit 13 through a gas transmission component, and after the gas relay exhaust port starts to exhaust, the gas collection unit 15 collects gas and transmits the gas to the gas analysis unit 13; the gas analysis unit 13 analyzes the gas discharged from the gas outlet and outputs the analysis result to the control unit 13; the power supply unit 14 is used for providing electric energy for the control unit 11, the valve opening unit 12 and the gas analysis unit 13 after being converted by an external power supply, and the external power supply comprises at least one of a 5V-380V alternating current and direct current access power supply, a battery and a photovoltaic panel. And a backflow-preventing and anti-blocking component is arranged in the gas collection unit 15.
The valve opening unit 12 comprises a thimble transmission part, the thimble transmission part can press the thimble of the gas plug of the gas relay, and the operation mode is suitable for the gas relay which needs to exhaust by pressing the gas plug. After the control unit 11 receives the light gas signal of the transformer, a control signal is sent to the valve opening unit 12 to control the ejector pin transmission part to act, the ejector pin of the gas plug of the gas relay is pressed to open the gas plug, and then the gas outlet of the gas relay starts to exhaust. The valve starting unit 12 adopts a starting coil in an electric, hydraulic, mechanical, pneumatic and other transmission mode or other gas taking devices for opening the exhaust valve. The gas passes through the gas collection unit 15 into the gas analysis unit 13. The control signal sent by the control unit 11 to the valve opening unit 12 is further sent to the gas analysis unit 13, and the gas analysis unit 13 is controlled to start analyzing the gas output by the gas collection unit 15. The gas analyzing unit 13 analyzes H in the collected gas2、CO、CO2、CH4、C2H4、C2H2、C2H6、O2、N2The concentration and/or the growth rate of at least one gas in the gases possibly generated when any transformer fails, micro water and the like, and further judging whether the collected gases are air or gas. The gas analysis unit 13 feeds back the analysis result to the control unit 11, if gas is presentThe result of the volume analysis is air, which indicates that the light gas signal is a false alarm signal, and the control unit controls not to send other signals; if the gas analysis result is gas, the light gas signal is not a false alarm signal, the control unit controls to output an alarm signal, the alarm hard contact is connected, and meanwhile, the tripping hard contact is connected to disconnect the transformer.
In this embodiment, the control unit may be further configured to determine that the gas analysis result is gas, and when the gas volume reaches a certain threshold, control to connect the alarm hard contact and/or control to connect the trip hard contact.
The gas analysis unit 13 includes a gas chamber cleaning component, and when the control unit 11 receives a gas analysis result, the gas chamber cleaning component is controlled to operate, so as to clean the gas chamber in the gas analysis unit 13, remove the gas collected this time, and prepare for the next gas analysis operation.
As shown in fig. 3, the buchholz relay includes a cover 31, a thimble 32, a gas plug 33, a first magnet 34, a cup 35, a weight 36, a probe 37, a cotter pin 38, a spring 39, a baffle 310, a second magnet 311, a screw 312, a heavy gas dry spring contact 313, an adjusting rod 314, a light gas dry spring contact 315, a sleeve 316, and an exhaust 317. The gas relay is provided with a light gas output contact for outputting a light gas signal. The utility model provides an automatic gas and real time monitoring device of getting of light gas of transformer installs with protection circuit by the intrinsic signal output of buchholz relay, realizes the automatic function of getting gas and real time monitoring device of light gas of transformer on the basis that does not change buchholz relay intrinsic function. An input signal line of the control unit 11 is led out from a line for outputting a light gas signal at the light gas output contact. The thimble transmission part is an iron core, and after the control unit 11 receives the light gas signal, the control unit 12 is controlled to act, the iron core of the valve opening unit 12 moves towards the thimble of the gas plug of the gas relay, and the thimble is pressed to enable the exhaust port 317 to start exhausting. One end of the gas collection unit 15 is connected with the gas outlet 317 through a gas transmission component, and the other end is connected with the gas analysis unit 13 through a gas transmission component. When enough gas is discharged, the gas gathered in the open cup cannot enable the open cup to float upwards under the buoyancy action of the transformer oil to be continuously connected with the relay, so that the light gas signal disappears, the input signal of the control unit 11 disappears, the iron core of the valve opening unit 12 retracts, the gas outlet 317 of the gas relay is closed, and the gas outlet 317 is exhausted.
As shown in fig. 4, a contact KG-1 of the buchholz relay KG is controlled by the baffle 310 to form a heavy buchholz protection. Another contact KG-2 of buchholz relay KG is controlled by opening cup 35, constitutes light gas protection, and after contact KG-2 moved, positive power was put through the signal return circuit by contact KG-2, and buchholz relay exports light gas signal. KG-2 switch-on the time, the light gas signal is received to the control unit of the automatic gas of getting of transformer light gas and real time monitoring device, control open valve unit 12 (adopt SC to indicate in figure 4) action, make gas vent 317 begin to exhaust, simultaneously gas analysis device 13 (adopt JE to indicate in figure 4) switch-on power supply begins to carry out gas analysis, if gas analysis result is gas, the switching-on of warning hard contact KS exports light gas signal again, and the switching-on of tripping operation hard contact XB simultaneously, and auxiliary relay KCO is started, and two pairs of contacts of KCO make transformer circuit breaker QF1, QF2 trip respectively, and the transformer disconnection.
If a user receives two light gas signals within a certain time period, the light gas signals are not false alarms, and the transformer is in a fault; if the user only receives a light gas signal, the light gas signal is a false alarm, and no gas is generated in the gas relay, so that observation can be performed.
Example 3
Unlike embodiment 2, when the gas analysis result is gas, the trip hard contact XB does not make the trip circuit, and the transformer is not disconnected. Whether the trip hard contact XB will be switched on or not can be specifically set according to requirements.
Example 4
Unlike embodiment 2, the exhaust end time of the exhaust port 317 is set by the control unit 11. After the set time is reached, the control unit 11 controls the valve opening unit 12 to act, the thimble transmission part returns, the gas relay exhaust port 317 is closed, and the exhaust of the exhaust port 317 is finished.
Example 5
As shown in fig. 5, the on-line detection system for light gas of a transformer comprises the device for automatically taking gas and monitoring the light gas of the transformer in real time, and further comprises a communication unit 51 and a server 52, wherein the device for automatically taking gas and monitoring the light gas of the transformer in real time is connected with the server 52 through the communication unit 51, and sends a gas analysis result to the server 52. The server 52 is used for displaying, storing, further analyzing and querying the received gas analysis result. The server 52 further analyzes the gas analysis result to judge the fault type of the transformer, and automatically takes gas from the light gas of the transformer according to the fault type and outputs a control signal to the real-time monitoring device to control the tripping hard contact to be connected, so that the transformer performs tripping protection.
When the server 52 displays the data, display modes such as a report form and a trend graph are provided, and the access of the data to the power system is supported, and meanwhile, cloud processing and big data analysis are supported.
The server 52 further analyzes the gas analysis result by using a characteristic gas method, a three-ratio method and other methods listed in the guide for analyzing and judging the dissolved gas in the transformer oil (DLT 722-2014) or the guide for analyzing and judging the dissolved gas in the transformer oil (GBT 7252-2001).
The communication unit comprises wireless communication units such as WiFi, Bluetooth, LoRa, 2G, 3G, 4G and 5G, and wired communication units such as optical fiber cables, and adopts a standard network protocol to support remote data transmission, and data are encrypted and transmitted.
Example 6
Unlike embodiment 5, the server does not automatically take gas from the transformer light gas and output a control signal to the real-time monitoring device.
Example 7
As shown in fig. 6, the on-line detection method for light gas of transformer, which is used for the device for automatically taking gas and monitoring the light gas of transformer in real time, includes the following steps:
s1, the control unit receives a light gas signal of the gas relay;
s2, the control unit sends control signals to the valve opening unit and the gas analysis unit;
s3, opening the gas relay exhaust port by the action of the valve opening unit;
s4, the gas analysis unit analyzes the gas discharged from the gas outlet and returns the analysis result to the control unit;
and S5, the control unit controls whether to output an alarm signal according to the analysis result.
The step S5 includes the sub-steps of:
and S51, the control unit judges whether the analysis result is air, if so, step S521 is executed, the control unit controls not to alarm and not to trip, and if not, step S522 is executed, and the control unit controls to send an alarm signal and trip.
After step S522 is executed, the control unit controls the operation of the gas cell cleaning means to clean the gas cell in the gas analysis unit in step S6.
Example 8
Unlike embodiment 8, the control unit controls only no alarm in step S521, and controls only the emission of an alarm signal in step S522.
Example 9
As shown in fig. 7, the method for detecting light gas of a transformer on line is used for the system for detecting light gas of a transformer on line, and includes the steps of:
s1, the control unit receives a light gas signal of the gas relay;
s2, the control unit sends control signals to the valve opening unit and the gas analysis unit;
s3, opening the gas relay exhaust port by the action of the valve opening unit;
s4, the gas analysis unit analyzes the gas discharged from the gas outlet and returns the analysis result to the control unit;
and S5, the control unit controls whether to output an alarm signal according to the analysis result.
The step S5 includes the sub-steps of:
s51, the control unit judges whether the analysis result is air, if yes, step S521 is executed, the control unit controls not to give an alarm, if not, step S522 is executed, and the control unit controls to give an alarm signal.
After step S522 is executed, the control unit controls the operation of the gas cell cleaning means to clean the gas cell in the gas analysis unit in step S6.
The method further comprises the following steps after the step S4:
s7, the control unit sends the gas analysis result to the server;
s8, the server further analyzes the gas analysis result;
and S9, the server judges the transformer fault type according to the further analysis result, judges whether the current fault needs tripping, if so, executes step S91, the server sends a tripping signal to the control unit, and the control unit controls tripping, and if not, executes step S92, and the server does not send a control signal to the control unit.
Example 10
As shown in fig. 8, unlike embodiment 7, the method further includes, after step S4, the steps of:
s7, the control unit sends the gas analysis result to the server;
and S8, the server further analyzes the gas analysis result.
In step S8, the server determines the type of the transformer fault only according to the further analysis result, provides a reference for the worker, and does not send any signal to the control unit.
It should be noted that the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the foregoing embodiments illustrate the invention in detail, those skilled in the art will appreciate that: it is possible to modify the technical solutions described in the foregoing embodiments or to substitute some or all of the technical features thereof, without departing from the scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a light gas of transformer is automatic gets gas and real time monitoring device, includes the control unit, its characterized in that: still include and open valve unit and gas analysis unit, wherein:
the control unit receives a light gas signal of the transformer and then controls the valve opening unit and the gas analysis unit;
the valve opening unit opens and/or closes an exhaust port of the gas relay according to a control signal of the control unit;
the gas analysis unit is connected with the gas outlet of the gas relay, analyzes the gas discharged from the gas outlet and outputs an analysis result to the control unit.
2. The automatic gas taking and real-time monitoring device for the light gas of the transformer as claimed in claim 1, wherein: the valve opening unit comprises a thimble transmission part, and the thimble transmission part presses and/or rotates a thimble of an air plug of the gas relay.
3. The automatic gas taking and real-time monitoring device for the light gas of the transformer as claimed in claim 2, wherein: and after receiving the light gas signal of the transformer, the control unit sends a control signal to the valve opening unit to control the thimble transmission part to act, so that the gas exhaust port of the gas relay starts to exhaust.
4. The automatic gas taking and real-time monitoring device for the light gas of the transformer as claimed in claim 3, wherein: and after receiving the light gas signal of the transformer, the control unit controls the gas analysis unit to start analyzing the collected gas.
5. The device for automatically taking gas and monitoring light gas in real time for transformer as claimed in claim 4, wherein: the gas analysis unit analyzes the concentration and/or growth rate of gas in the collected gas.
6. The automatic gas taking and real-time monitoring device for the light gas of the transformer as claimed in claim 5, wherein: and when the gas analysis result is gas, the control unit controls and outputs an alarm signal.
7. The utility model provides an automatic gas and real time monitoring system of getting of light gas of transformer, includes communication unit and server, its characterized in that: the on-line detection device for the light gas of the transformer is connected with the server through the communication unit, and sends a gas analysis result to the server and/or receives data sent by the server.
8. The system for automatically drawing gas and monitoring light gas in real time of transformer as claimed in claim 7, wherein: the server is used for displaying, storing, further analyzing and inquiring the received gas analysis result, and judging the fault type of the transformer according to the further analysis.
9. A method for automatically taking gas and monitoring light gas of a transformer in real time is characterized by comprising the following steps: the automatic gas taking and real-time monitoring device for the light transformer gas as claimed in any one of claims 1 to 6 or the automatic gas taking and real-time monitoring system for the light transformer gas as claimed in any one of claims 7 to 8, comprising the following steps:
the control unit receives a light gas signal of the gas relay;
the control unit sends control signals to the valve opening unit and the gas analysis unit;
the valve opening unit acts to open the exhaust port of the gas relay;
the gas analysis unit analyzes the gas discharged from the gas outlet and returns the analysis result to the control unit;
and the control unit controls whether to output an alarm and/or trip signal according to the analysis result.
10. The method for automatically taking gas and monitoring light gas of a transformer according to claim 9, wherein the method comprises the following steps: when the analysis result is air, the control unit does not output the alarm signal, and when the analysis result is gas, the control unit outputs the alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010066389.5A CN111103407A (en) | 2020-01-20 | 2020-01-20 | Device, system and method for automatically taking gas from transformer light gas and monitoring transformer light gas in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010066389.5A CN111103407A (en) | 2020-01-20 | 2020-01-20 | Device, system and method for automatically taking gas from transformer light gas and monitoring transformer light gas in real time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111103407A true CN111103407A (en) | 2020-05-05 |
Family
ID=70427512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010066389.5A Pending CN111103407A (en) | 2020-01-20 | 2020-01-20 | Device, system and method for automatically taking gas from transformer light gas and monitoring transformer light gas in real time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111103407A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816432A (en) * | 2020-07-10 | 2020-10-23 | 国网山东省电力公司电力科学研究院 | Gas relay for realizing intelligent tripping of transformer and gas protection method |
| CN112082828A (en) * | 2020-08-04 | 2020-12-15 | 山东五岳电器有限公司 | Online gas taking detection device and method for transformer gas relay |
| CN112350273A (en) * | 2020-10-29 | 2021-02-09 | 国电南瑞科技股份有限公司 | Digital light gas protection method and device for transformer |
| CN112461999A (en) * | 2020-11-12 | 2021-03-09 | 广西桂林金秉航科技有限公司 | Automatic detection gas collection box for transformer gas and use method thereof |
| CN112461613A (en) * | 2020-11-12 | 2021-03-09 | 广西桂林金秉航科技有限公司 | Automatic gas collection detection box for transformer gas and use method thereof |
| CN112557621A (en) * | 2020-11-12 | 2021-03-26 | 中国电力科学研究院有限公司 | Gas composition monitoring and alarming device |
| CN113236505A (en) * | 2021-05-07 | 2021-08-10 | 北京壬工智能科技有限公司 | Fan thunder and lightning on-line monitoring system |
| CN113284324A (en) * | 2021-05-08 | 2021-08-20 | 国网山西省电力公司忻州供电公司 | Intelligent on-load gas exhaust device of transformer |
| CN114047266A (en) * | 2021-11-10 | 2022-02-15 | 中国南方电网有限责任公司超高压输电公司大理局 | Method, device and system for testing gas relay light gas monitoring device |
| CN114427990A (en) * | 2022-04-07 | 2022-05-03 | 广东电网有限责任公司佛山供电局 | Gas taking method for transformer gas protection action and detection device thereof |
| CN114465204A (en) * | 2021-12-28 | 2022-05-10 | 国电南瑞科技股份有限公司 | Transformer light gas protection method and system based on hydrogen concentration characteristics |
| CN114530826A (en) * | 2021-12-28 | 2022-05-24 | 国电南瑞科技股份有限公司 | Transformer light gas protection method and system based on organic gas concentration characteristics |
| CN116436150A (en) * | 2022-01-04 | 2023-07-14 | 广州普瑞电力控制系统设备有限公司 | Intelligent distribution transformer terminal based on state sensing and edge computing technology |
| CN114465204B (en) * | 2021-12-28 | 2024-04-26 | 国电南瑞科技股份有限公司 | Transformer light gas protection method and system based on hydrogen concentration characteristics |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512776A (en) * | 2012-06-21 | 2014-01-15 | Abb技术有限公司 | Gas sampling device for a buchholz relay, method for operating said sampling device, and buchholz relay |
| CN206211361U (en) * | 2016-12-05 | 2017-05-31 | 国网山西省电力公司忻州供电公司 | Transformer has the light gas exhaust apparatus of load |
| CN108254683A (en) * | 2018-01-10 | 2018-07-06 | 宁波海蔓汽车科技有限公司 | Transformer Buchholz relay failure detector |
| CN208943695U (en) * | 2018-10-11 | 2019-06-07 | 嘉兴市恒特工程质量检测有限公司 | A kind of indoor harmful gas environmental detection set |
| CN209372805U (en) * | 2018-12-04 | 2019-09-10 | 广东电网有限责任公司 | SF6Gas on-line detecting system |
| CN209727157U (en) * | 2019-05-23 | 2019-12-03 | 重庆源通电器设备制造有限责任公司 | A kind of the on-line monitoring component and its monitoring system of long-range automatic monitoring transformer |
-
2020
- 2020-01-20 CN CN202010066389.5A patent/CN111103407A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512776A (en) * | 2012-06-21 | 2014-01-15 | Abb技术有限公司 | Gas sampling device for a buchholz relay, method for operating said sampling device, and buchholz relay |
| CN206211361U (en) * | 2016-12-05 | 2017-05-31 | 国网山西省电力公司忻州供电公司 | Transformer has the light gas exhaust apparatus of load |
| CN108254683A (en) * | 2018-01-10 | 2018-07-06 | 宁波海蔓汽车科技有限公司 | Transformer Buchholz relay failure detector |
| CN208943695U (en) * | 2018-10-11 | 2019-06-07 | 嘉兴市恒特工程质量检测有限公司 | A kind of indoor harmful gas environmental detection set |
| CN209372805U (en) * | 2018-12-04 | 2019-09-10 | 广东电网有限责任公司 | SF6Gas on-line detecting system |
| CN209727157U (en) * | 2019-05-23 | 2019-12-03 | 重庆源通电器设备制造有限责任公司 | A kind of the on-line monitoring component and its monitoring system of long-range automatic monitoring transformer |
Non-Patent Citations (1)
| Title |
|---|
| 汪一雄 等: "变压器铁芯夹件多点接地故障分析处理", 《湖南电力》 * |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816432B (en) * | 2020-07-10 | 2021-07-23 | 国网山东省电力公司电力科学研究院 | Gas relay for realizing intelligent tripping of transformer and gas protection method |
| CN111816432A (en) * | 2020-07-10 | 2020-10-23 | 国网山东省电力公司电力科学研究院 | Gas relay for realizing intelligent tripping of transformer and gas protection method |
| CN112082828A (en) * | 2020-08-04 | 2020-12-15 | 山东五岳电器有限公司 | Online gas taking detection device and method for transformer gas relay |
| CN112350273B (en) * | 2020-10-29 | 2023-06-20 | 国电南瑞科技股份有限公司 | Digital light gas protection method and device for transformer |
| CN112350273A (en) * | 2020-10-29 | 2021-02-09 | 国电南瑞科技股份有限公司 | Digital light gas protection method and device for transformer |
| CN112461999A (en) * | 2020-11-12 | 2021-03-09 | 广西桂林金秉航科技有限公司 | Automatic detection gas collection box for transformer gas and use method thereof |
| CN112461613A (en) * | 2020-11-12 | 2021-03-09 | 广西桂林金秉航科技有限公司 | Automatic gas collection detection box for transformer gas and use method thereof |
| CN112557621A (en) * | 2020-11-12 | 2021-03-26 | 中国电力科学研究院有限公司 | Gas composition monitoring and alarming device |
| CN113236505A (en) * | 2021-05-07 | 2021-08-10 | 北京壬工智能科技有限公司 | Fan thunder and lightning on-line monitoring system |
| CN113284324A (en) * | 2021-05-08 | 2021-08-20 | 国网山西省电力公司忻州供电公司 | Intelligent on-load gas exhaust device of transformer |
| CN113284324B (en) * | 2021-05-08 | 2022-07-05 | 国网山西省电力公司忻州供电公司 | Intelligent on-load gas exhaust device of transformer |
| CN114047266A (en) * | 2021-11-10 | 2022-02-15 | 中国南方电网有限责任公司超高压输电公司大理局 | Method, device and system for testing gas relay light gas monitoring device |
| CN114047266B (en) * | 2021-11-10 | 2024-01-16 | 中国南方电网有限责任公司超高压输电公司大理局 | Inspection method, device and system for gas relay light gas monitoring device |
| CN114465204A (en) * | 2021-12-28 | 2022-05-10 | 国电南瑞科技股份有限公司 | Transformer light gas protection method and system based on hydrogen concentration characteristics |
| CN114530826A (en) * | 2021-12-28 | 2022-05-24 | 国电南瑞科技股份有限公司 | Transformer light gas protection method and system based on organic gas concentration characteristics |
| CN114530826B (en) * | 2021-12-28 | 2024-02-13 | 国电南瑞科技股份有限公司 | Transformer light gas protection method and system based on concentration characteristics of organic gas |
| CN114465204B (en) * | 2021-12-28 | 2024-04-26 | 国电南瑞科技股份有限公司 | Transformer light gas protection method and system based on hydrogen concentration characteristics |
| CN116436150A (en) * | 2022-01-04 | 2023-07-14 | 广州普瑞电力控制系统设备有限公司 | Intelligent distribution transformer terminal based on state sensing and edge computing technology |
| CN114427990A (en) * | 2022-04-07 | 2022-05-03 | 广东电网有限责任公司佛山供电局 | Gas taking method for transformer gas protection action and detection device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111103407A (en) | Device, system and method for automatically taking gas from transformer light gas and monitoring transformer light gas in real time | |
| CN207938972U (en) | A kind of intelligent monitor system applied to box-type substation | |
| CN202067135U (en) | Multifunction-type gas integrated on-line measuring and controlling device | |
| CN201444191U (en) | Direct-current power supply online monitoring system | |
| CN102961842B (en) | Fire alarm joint control system applied to chemical enterprise | |
| CN108254683A (en) | Transformer Buchholz relay failure detector | |
| CN205982461U (en) | Low -voltage distribution is electric detection means for cabinet | |
| CN111669119B (en) | Photovoltaic module turn-off method and turn-off system | |
| CN111999355A (en) | Transformer combustible gas online detection device and method | |
| CN212483443U (en) | Transformer combustible gas on-line measuring device | |
| CN108400054A (en) | A kind of outdoor vacuum circuit breaker control system | |
| CN205911832U (en) | Circuit breaker intelligent components | |
| CN105334761A (en) | On-off control circuit for 10kV motor | |
| CN201673147U (en) | Portable GIS combined electrical apparatus fault gas detector | |
| CN210639250U (en) | Electric disconnecting link state monitoring and fault diagnosis system | |
| CN208489692U (en) | A kind of electric power tunnel integrated synthesis monitoring system | |
| CN113340769A (en) | 110KV total drop GIS micro-water density on-line monitoring system | |
| CN211627699U (en) | On-line monitoring device for gas in transformer oil | |
| CN209298878U (en) | System for Circuit Breaker protective device on a kind of intelligent pole | |
| CN208061944U (en) | A kind of outdoor vacuum circuit breaker control system | |
| CN111555163A (en) | 10kV switchgear intelligent operation and detection system and method based on edge calculation | |
| CN102694417A (en) | Intelligent distribution system | |
| CN212844140U (en) | Vacuum degree online intelligent early warning system based on electric field intensity measurement | |
| CN205538912U (en) | Equipment mistake blocking device is prevented to gaseous detection of SF6 | |
| CN114709869A (en) | Isolated photovoltaic grid-connected controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Wu Inventor after: Chen Keyu Inventor after: Li Kuanhong Inventor after: Liu Yang Inventor after: Yang Yongbo Inventor after: Fangmeng Inventor after: Liang Die Inventor after: Li Xihan Inventor before: Chen Wu Inventor before: Chen Keyu Inventor before: Li Kuanhong Inventor before: Liu Yang Inventor before: Yang Yongbo Inventor before: Fangmeng Inventor before: Liang Die Inventor before: Li Xihan |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200925 Address after: 621000 No. 16 west section, South South Road, Mianyang, Sichuan Applicant after: MIANYANG POWER SUPPLY COMPANY, STATE GRID SICHUAN ELECTRIC POWER Co.,Ltd. Applicant after: Beijing Rengong Intelligent Technology Co.,Ltd. Address before: 100085 D403, 4 floor, 1 building, 12 information road, Haidian District, Beijing. Applicant before: Beijing Rengong Intelligent Technology Co.,Ltd. |
|
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200505 |