CN211790724U - Transformer body protection in-situ tripping and signal device - Google Patents
Transformer body protection in-situ tripping and signal device Download PDFInfo
- Publication number
- CN211790724U CN211790724U CN202020388768.1U CN202020388768U CN211790724U CN 211790724 U CN211790724 U CN 211790724U CN 202020388768 U CN202020388768 U CN 202020388768U CN 211790724 U CN211790724 U CN 211790724U
- Authority
- CN
- China
- Prior art keywords
- transformer
- relay
- body protection
- transformer body
- protection
- 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.)
- Active
Links
Images
Abstract
The utility model relates to a transformer body protection is trip-out and signal device on spot. Belong to transformer technical field, the device includes: the control box, a plurality of intermediate relays, a plurality of first indicator lamps, a voltage monitoring relay and a second indicator lamp; the plurality of intermediate relays and the voltage monitoring relay are positioned in the control box, and each intermediate relay is provided with a first indicator light; each intermediate relay is provided with a plurality of connecting points which are used for being connected with a protection device in the transformer body; and a second indicator light is arranged on the voltage monitoring relay, a coil of the voltage monitoring relay is used for being connected with a main loop between the body protection device of the transformer and the plurality of intermediate relays, and the voltage monitoring relay is used for sensing the line voltage of the main loop. The utility model discloses avoided because the vibrations of transformer body or other reasons lead to the transformer protection to take place the condition of maloperation, improved transformer equipment safe operation reliability.
Description
Technical Field
The utility model relates to a transformer technical field, in particular to transformer body protection is trip-out and signal device on spot.
Background
A plurality of transformers are usually arranged in a power plant, some of the transformers are boosting transformers, the voltage generated by a generator is boosted and directly transmitted to a high-voltage distribution device of the power plant, and the high-voltage distribution device is connected with a power system through a high-voltage line to meet the requirement of a power load; some transformers are step-down transformers, and the voltage generated by the generator is reduced to the voltage level of the power plant for the auxiliary machines in the power plant to operate, so that the power consumption requirements of various process systems, control systems and the like in the power plant are met. It follows that transformers are very important electrical equipment for power plants. The protection of the transformer is important. The transformer protection includes non-electric quantity protection, and the sensitivity, accuracy and reliability of the non-electric quantity protection have important influence on the protection of the transformer.
At present, the non-electric protection of the transformer is realized by a protection device arranged in a transformer body, such as a gas relay, an oil temperature measuring device, a winding temperature measuring device, a pressure releasing device, a quick-acting oil pressure relay and the like.
The designer finds that the related art has at least the following technical problems:
because the control cable is circuitous among the transformer body, the transformer terminal box, the transformer microcomputer protection device and other equipment, the brought direct current grounding and the like introduce interference to the transformer microcomputer protection device and unreliable factors such as secondary control loop disconnection and the like, and certain influence is generated on the reliable operation of the transformer.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a tripping operation and signal device on spot are protected to transformer body can solve because control cable circuitous between each equipment such as transformer body, transformer terminal case, transformer microcomputer protection device, and the DC ground connection that brings etc. introduces unreliable factors such as interference and secondary control circuit broken string to transformer microcomputer protection device, produces the technical problem of certain influence to transformer reliable operation. The technical scheme is as follows:
a transformer body protection in-place trip and signal device, the transformer body protection in-place trip and signal device comprising: the control box, a plurality of intermediate relays, a plurality of first indicator lamps, a voltage monitoring relay and a second indicator lamp;
the plurality of intermediate relays and the voltage monitoring relay are both positioned in the control box, and each intermediate relay is provided with one first indicator light;
each intermediate relay is provided with a plurality of connecting points, and the plurality of connecting points are used for being connected with a body protection device of the transformer;
the second indicator light is arranged on the voltage monitoring relay, a coil of the voltage monitoring relay is used for being connected with a main loop between the protection device in the transformer body and the plurality of intermediate relays, and the voltage monitoring relay is used for sensing the line voltage of the main loop.
In an optional embodiment, the plurality of intermediate relays comprises: a plurality of first and second intermediate relays;
the plurality of first intermediate relays and the quick-acting second intermediate relays are arranged in parallel.
In an optional embodiment, the device further comprises a separation plate, and the separation plate is arranged between every two adjacent intermediate relays.
In an optional embodiment, the isolation plate is a plate made of an insulating material.
In an alternative embodiment, the control box is a rectangular parallelepiped or square box.
In an alternative embodiment, the number of intermediate relays is determined according to the protection requirements of the transformer.
In an alternative embodiment, the plurality of connection points comprises: and the gas relay connection point is used for being connected with a gas relay in the body protection device of the transformer.
In an optional embodiment, the plurality of connection points further comprises: and the oil temperature measuring connection point is used for being connected with an oil temperature measuring device in the body protection device of the transformer.
In an optional embodiment, the plurality of connection points further comprises: a winding measurement connection point for connection with a winding measurement device in a body protection device of the transformer.
In an optional embodiment, the plurality of connection points further comprises: and the quick-acting oil pressure relay connection point is used for being connected with a quick-acting oil pressure relay in the body protection device of the transformer.
The above technical scheme of the utility model following beneficial effect has at least:
through a plurality of connecting points on the auxiliary relay and the protection device in the transformer body are connected, avoided because the vibrations of transformer body or other reasons lead to the transformer protection to take place the condition of maloperation, directly cause the signal that the transformer body was drawn the embodiment of the utility model provides a device has effectively avoided the transformer operation in-process to take place the condition of maloperation, has avoided the unreliable factor that the control cable wiring was bought between transformer body, transformer terminal case, circuitous bringing between equipment such as transformer microcomputer protection device, has improved transformer equipment safe operation reliability.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of a transformer body protection in-situ trip and signal device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the protection principle after the transformer body protection trip-out and signal device provided by the embodiment of the invention is adopted.
Reference numerals:
1-control box, 2-intermediate relay, 21-first intermediate relay, 22-second intermediate relay, 3-first indicator light and 4-isolation board.
Detailed Description
Unless defined otherwise, all technical terms used in the embodiments of the present invention have the same meaning as commonly understood by one of ordinary skill in the art.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
A plurality of transformers are usually arranged in a power plant, some of the transformers are boosting transformers, the voltage generated by a generator is boosted and directly transmitted to a high-voltage distribution device of the power plant, and the high-voltage distribution device is connected with a power system through a high-voltage line to meet the requirement of a power load; some transformers are step-down transformers, and the voltage generated by the generator is reduced to the voltage level of the power plant for the auxiliary machines in the power plant to operate, so that the power consumption requirements of various process systems, control systems and the like in the power plant are met. It follows that transformers are very important electrical equipment for power plants. The protection of the transformer is important. The transformer protection includes non-electric quantity protection, and the sensitivity, accuracy and reliability of the non-electric quantity protection have important influence on the protection of the transformer. However, when the transformer is in abnormal condition in the transformer body through the protection device arranged in the transformer body in the non-electric protection of the transformer, the protection device sends a signal to the transformer body terminal box through the control cable, and then the signal is transferred from the transformer body terminal box to the transformer microcomputer protection device through the control cable, an intermediate relay of the transformer microcomputer protection device is started, and finally corresponding safety protection measures such as tripping and signaling are completed through an outlet of the transformer microcomputer protection device. Because direct current grounding and other unreliable factors brought by the circuitous connection of the control cable among the transformer body, the transformer terminal box, the transformer microcomputer protection device and other equipment introduce interference to the transformer microcomputer protection device, secondary control loop disconnection and the like, certain influence is generated on the reliable operation of the transformer. In view of this, the embodiment of the utility model provides a transformer body protection is trip on spot and signal device aims at solving above-mentioned technical problem.
The embodiment of the utility model provides a trip and signal device on spot are protected to transformer body, as shown in figure 1, transformer body protection trip and signal device on spot include: a control box 1, a plurality of intermediate relays, a plurality of first indicator lamps 3, a voltage monitoring relay and a second indicator lamp;
the plurality of intermediate relays and the voltage monitoring relay are positioned in the control box 1, and each intermediate relay is provided with a first indicator light 3;
each intermediate relay is provided with a plurality of connecting points which are used for being connected with a body protection device of the transformer;
and a second indicator light is arranged on the voltage monitoring relay, a coil of the voltage monitoring relay is used for being connected with a main loop between the protective device in the transformer body and the plurality of intermediate relays, and the voltage monitoring relay is used for sensing the line voltage of the main loop.
The embodiment of the utility model provides a transformer body protection is tripped out and signal device on the spot has following technological effect at least:
the embodiment of the utility model provides a device is connected with the body protection device of transformer through a plurality of connecting points on the auxiliary relay, has avoided because the vibrations of transformer body or other reasons lead to the transformer protection to take place the condition of maloperation, directly causes the signal that the transformer body was drawn forth the embodiment of the utility model provides a device has effectively avoided the transformer operation in-process to take place the condition of maloperation, has avoided the unreliable factor that the control cable wiring circuitous between equipment such as transformer body, transformer terminal case, transformer microcomputer protection device brought, has improved transformer equipment safe operation reliability.
The transformer body protection includes temperature protection, gas protection, pressure protection, and the like, wherein the temperature protection may be performed by using an oil temperature protection device, the gas protection is performed by using a gas relay, and the pressure protection is performed by using a pressure valve or a quick-acting oil pressure relay.
It should be noted that, except the body protection of the transformer, the protection of the transformer includes light gas protection and heavy gas protection, and the principle of the light gas protection is as follows: the transformer is overheated or partially discharged, so that the temperature of transformer oil rises, certain gas is generated and collected in the gas relay, the gas relay is triggered after a certain amount of gas is reached, an alarm signal is sent, an operator can stop the alarm sound signal immediately, and the conditions of temperature, sound, oil level, voltage, current indication and the like of the transformer are checked. Or the operator can exhaust the gas in the relay, and the transformer can continue to operate, so that the transformer is protected.
The main principle of heavy gas protection is as follows: after a serious short circuit occurs in the transformer, the transformer oil is impacted, certain oil flows towards a baffle of a relay in the transformer body, the relay in the transformer body trips, and therefore the transformer is protected. The main difference between the heavy gas protection and the light gas protection lies in the difference of setting values of a gas relay, the light gas only sends out an alarm signal, the light gas does not trip, and the heavy gas trips.
Further, referring to fig. 2, fig. 2 is a schematic diagram of protection of the transformer after the device provided by the embodiment of the present invention is adopted. The embodiment of the utility model provides a transformer heavy gas protection takes place the reason of maloperation into consideration to the device, leads to heavy gas contact shake mistake switch-on if transformer body vibration, perhaps reasons such as inside transformer oil stream rapid-action cause the maloperation, and the condition of tripping operation takes place for the relay in the transformer body, through with the utility model provides a device is connected with protection device in the transformer body, and with transformer light gas protection signal contact cluster access heavy gas protection return circuit, effectively avoided transformer in service heavy gas protection to take place the possibility of tripping operation maloperation, improve the rate of accuracy, guaranteed the normal operating of transformer.
Further, see fig. 2, appear the oil temperature rise in transformer body protection device or because transformer vibrations etc. cause transformer heavy gas protection to start, at this moment, through the utility model discloses the protection device that the embodiment provided connects, has established ties a light gas protection between the heavy gas protection return circuit for the transformer in other words, (see the part of dotted line frame in fig. 2), has improved transformer heavy gas protection's rate of accuracy. It should be noted that J, J1, J2, D1, and D2 in fig. 2 are all the intermediate relay 2 provided in the embodiment of the present invention. In FIG. 2, L + and L-at the top left and right are the connection points of the positive and negative electrodes of the power supply, respectively.
That is to say, appear when the transformer the embodiment of the utility model provides a device, when the transformer is inside overheated, or partial discharge, make transformer oil temperature rise, produce certain gas, gather in gas relay, reached a certain amount after touch gas relay, send alarm signal, the first pilot lamp 3 that sets up on intermediate relay this moment is bright, the position that the operating personnel specifically broke down according to the instruction of first pilot lamp 3 seeks the transformer, handles.
It should be noted that the voltage monitoring relay is used for voltage protection and control of the electric traction system. The coil of the voltage monitoring relay is connected in parallel with the main circuit, and the line voltage of the main circuit is sensed; the contact is connected with the control circuit and is an actuating element. That is to say, the embodiment of the utility model provides a voltage monitoring relay is used for keeping watch on protection device in the transformer body and the utility model provides a voltage safety between the protection device, when voltage appears unusually, takes place the tripping operation, and the second pilot lamp that sets up on voltage monitoring relay is bright, and the staff handles the trouble according to the suggestion of second pilot lamp, realize in the transformer body protection device with the utility model provides a voltage safety between the protection device.
In an alternative embodiment, the plurality of intermediate relays 2 includes: a plurality of first intermediate relays 21 and a plurality of second intermediate relays 22;
the plurality of first intermediate relays 21 are arranged side by side with the plurality of second intermediate relays 22.
It should be noted that the number of the first intermediate relays 21 and the second intermediate relays 22 may be 4 to 10, for example, 4, 5, 6, 7, 8, 9, 10, and the like, and the embodiment of the present invention is not limited to this.
In an optional embodiment, the device further comprises a partition plate 4, and the partition plate 4 is arranged between each two adjacent intermediate relays 2.
It should be noted that, by providing the isolation plate 4, each intermediate relay 2 in the control box 1 can be isolated, and the influence caused by the crossed windings when a plurality of intermediate relays 2 work is avoided.
It should be noted that, the isolation plate 4 is connected with a bottom surface of the control box 1, and the isolation plate 4 and the bottom surface of the control box 1 may be detachably connected, for example, may be connected by bolts, and the distance and the size are conveniently adjusted according to the size of the intermediate relay by adopting the above connection mode.
In an alternative embodiment, the isolation plate 4 is a plate of insulating material.
In an alternative embodiment, the control box 1 is a rectangular parallelepiped or square box.
The embodiment of the utility model provides a through setting up control box 1, put into control box 1 with a plurality of auxiliary relay, can adjust control box 1's position according to the needs of transformer.
It should be noted that, because the transformer is mostly located outside the factory building, it may be influenced by the external weather, and therefore, the material of the control box 1 may be a box body made of stainless steel, so as to prevent the control box 1 from being corroded outside.
The embodiment of the utility model provides a control box 1 can have the wheel that rolls, makes things convenient for control box 1 shift position as required. Improve the utility model discloses the practicality of the device that the embodiment provided.
In an alternative embodiment, the number of intermediate relays is determined according to the protection requirements of the transformer.
The number of the intermediate relays can be determined according to the protection setting requirements of the transformer body, such as the oil temperature in the transformer, the winding temperature of the transformer, the pressure release, the quick-acting oil pressure relays and other actual requirements. It can be seen that the oil temperature in the transformer, the winding temperature of the transformer, the pressure release, the quick-acting oil pressure relay and the like all belong to the actual working conditions of the transformer, that is, the number of the intermediate relays can be determined according to the capacity of the transformer.
In an alternative embodiment, the plurality of connection points comprises: and the gas relay connection point is used for being connected with a gas relay in the body protection device of the transformer.
It should be noted that, gas relay is an important safety arrangement in transformer body protection device, and it is installed on the union coupling of transformer case lid and batch oil tank, and the signal or trip circuit are switched on under the gas or the oil stream effect that transformer internal fault produced, make with the utility model discloses the protection device that provides sends alarm signal or makes the transformer amputate from the electric wire netting, reaches the effect of protection transformer.
In an optional embodiment, the plurality of connection points further comprises: and the oil temperature measuring connection point is used for being connected with an oil temperature measuring device in the body protection device of the transformer.
It should be noted that the oil temperature measuring device includes an oil level gauge, an oil level annunciator, an oil temperature thermometer, a temperature measuring resistor, a winding temperature annunciator, a transmitter, and the like. The oil temperature measurement connecting point is connected with foretell thermometer, after the temperature surpassed the certain limit, through the embodiment of the utility model provides a device signals, and the operating personnel reaches the protection to the transformer according to the oil temperature of this signal processing transformer.
In an optional embodiment, the plurality of connection points further comprises: and the winding measurement connection point is used for being connected with a winding measurement device in a body protection device of the transformer.
In the direct measurement method of the winding, a sensor is directly embedded in the transformer winding, and the temperature of the winding is measured and displayed by using a temperature measuring instrument. The winding measuring connecting point is connected with the sensor to monitor the temperature change of the winding of the transformer.
In an optional embodiment, the plurality of connection points further comprises: and the quick-acting oil pressure relay connection point is used for being connected with a quick-acting oil pressure relay in the body protection device of the transformer.
The quick-acting hydraulic relay operates by utilizing a dynamic pressure increase caused by an accident in the tank. The faster the oil pressure increases, the faster the action; because the transmission speed of the oil pressure wave in the transformer oil is extremely high, the quick-acting oil pressure relay is sensitive in response and accurate in action, and can quickly send out a signal and cut off a power supply. If a quick-acting oil pressure relay is installed on the transformer, once a vicious short-circuit fault occurs inside the transformer, the oil tank can be prevented from exploding. Through with the utility model provides a quick-action oil pressure relay connecting point is connected with quick-action oil pressure relay, takes place inside the malignant short-circuit fault of emergence when the transformer, can pass through the embodiment of the utility model provides a timely signals of protection device, troubleshooting.
In an optional embodiment, the plurality of connection points further comprises: a pressure relief valve connection point for connection with a pressure relief valve in the transformer body.
It should be noted that, when the transformer fails during operation, a part of the transformer oil is vaporized due to overheating of the coil, the pressure in the transformer oil tank is rapidly increased, and the pressure relief valve rapidly acts within 2ms to protect the transformer oil tank from deformation or burst. When the pressure in the transformer tank rises again to reach the opening pressure, the pressure relief valve acts again until the pressure in the transformer tank drops to a normal value. Because the pressure relief valve can be reliably closed after action, water and air outside the transformer oil tank can not enter the oil tank, and the interior of the transformer can not be polluted by atmosphere. Through the pressure release valve connection point with the pressure release valve in the transformer body, pressure increase in the transformer, can be quick send out the signal through this device, and then the discharge failure.
The above description is only illustrative of the present invention, and should not be taken as limiting the scope of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A transformer body protection trip-in-place and signal device, the transformer body protection trip-in-place and signal device comprising: a control box (1), a plurality of intermediate relays (2), a plurality of first indicator lamps (3), a voltage monitoring relay and a second indicator lamp;
the intermediate relays (2) and the voltage monitoring relay are both positioned in the control box (1), and each intermediate relay (2) is provided with a first indicator light (3);
each intermediate relay (2) is provided with a plurality of connecting points which are used for being connected with a corresponding tripping circuit and a signal circuit in a body protection device of the transformer;
the second indicator light is arranged on the voltage monitoring relay, a coil of the voltage monitoring relay is used for being connected with a main loop between the body protection device of the transformer and the plurality of intermediate relays (2), and the voltage monitoring relay is used for sensing the line voltage of the main loop.
2. Transformer body protection local trip and signal device according to claim 1, characterized in that said plurality of intermediate relays (2) comprises: a plurality of first intermediate relays (21) and a plurality of second intermediate relays (22);
the plurality of first intermediate relays (21) are arranged side by side with the plurality of second intermediate relays (22).
3. Transformer body protection local trip and signal device according to claim 1, characterized in that the device further comprises a separation plate (4), the separation plate (4) being arranged between each two adjacent intermediate relays (2).
4. Transformer body protection local trip and signal device according to claim 3, wherein the isolating plate (4) is a plate of insulating material.
5. Transformer body protection local trip and signal device according to claim 1, characterized in that the control box (1) is a cuboid or cube box.
6. The transformer body protection local trip and signal device of claim 1, wherein the number of said intermediate relays is determined according to the protection requirements of the transformer.
7. A transformer body protection local trip and signal device according to any one of claims 1-6 and wherein said plurality of connection points include: and the gas relay connection point is used for being connected with a gas relay in the body protection device of the transformer.
8. The transformer body protection local trip and signal device of claim 7, wherein the plurality of connection points further comprises: and the oil temperature measuring connection point is used for being connected with an oil temperature measuring device in the body protection device of the transformer.
9. The transformer body protection local trip and signal device of claim 7, wherein the plurality of connection points further comprises: a winding measurement connection point for connection with a winding measurement device in a body protection device of the transformer.
10. The transformer body protection local trip and signal device of claim 7, wherein the plurality of connection points further comprises: and the quick-acting oil pressure relay connection point is used for being connected with a quick-acting oil pressure relay in the body protection device of the transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020388768.1U CN211790724U (en) | 2020-03-24 | 2020-03-24 | Transformer body protection in-situ tripping and signal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020388768.1U CN211790724U (en) | 2020-03-24 | 2020-03-24 | Transformer body protection in-situ tripping and signal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211790724U true CN211790724U (en) | 2020-10-27 |
Family
ID=72931703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020388768.1U Active CN211790724U (en) | 2020-03-24 | 2020-03-24 | Transformer body protection in-situ tripping and signal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211790724U (en) |
-
2020
- 2020-03-24 CN CN202020388768.1U patent/CN211790724U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2899728B2 (en) | A device comprising a high voltage apparatus including a fluid and equipment for detecting one or more physical properties of the fluid | |
| US11422204B2 (en) | Method for detecting open phase of startup/standby transformer based on optical CT | |
| JP2005304148A (en) | Insulation monitoring system | |
| CN103915824A (en) | Power distribution systems and method of operating a power distribution system including arc flash detection | |
| CN108649532A (en) | A kind of pouring-in transformer lines phase failure protection method and device | |
| CN211790724U (en) | Transformer body protection in-situ tripping and signal device | |
| CN110926537A (en) | Multifunctional oil-immersed transformer measuring device | |
| CN213716668U (en) | Intelligent dry-type transformer of full-state monitoring | |
| CN207994725U (en) | A kind of control system with switch abnormality detection and alarm function | |
| EP4010954B1 (en) | Power distribution lateral protection system and method | |
| CN214227378U (en) | Intelligent integrated control device of power equipment | |
| CN213459337U (en) | Buried transformer | |
| CN214010388U (en) | Automatic detection system about transformer | |
| CN2309001Y (en) | One-chip computer field monitor for transformer substation | |
| KR200445114Y1 (en) | Circuit breaker having trip terminal coupled with multiple sensors | |
| CN211123161U (en) | Circuit breaker loop current monitoring device | |
| KR100337184B1 (en) | Remote monitoring system for transformer | |
| CN107727254A (en) | A kind of reactor running temperature wireless real-time monitoring device | |
| CN216251779U (en) | High-reliability deviation protection device | |
| CN203327402U (en) | Electrical control cabinet for mining flame-proof intrinsic-safety type refrigeration device | |
| CN219418720U (en) | Intelligent open-circuit-preventing current transformer | |
| CN216215860U (en) | Insulation on-line monitoring device and non-electric quantity protection loop of transformer | |
| CN219960098U (en) | Device for preventing internal short circuit of high-voltage reel box | |
| CN212012114U (en) | Arc light relay protection device for cable branch box | |
| CN215452510U (en) | Electrical measurement signal output circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |