CN113012977B - Graded heating device of tank circuit breaker - Google Patents
Graded heating device of tank circuit breaker Download PDFInfo
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- CN113012977B CN113012977B CN202110423360.2A CN202110423360A CN113012977B CN 113012977 B CN113012977 B CN 113012977B CN 202110423360 A CN202110423360 A CN 202110423360A CN 113012977 B CN113012977 B CN 113012977B
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- switch
- heating
- circuit breaker
- tank circuit
- temperature
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 131
- 239000003990 capacitor Substances 0.000 claims description 28
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 2
- 229910018503 SF6 Inorganic materials 0.000 abstract description 17
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 abstract description 17
- 229960000909 sulfur hexafluoride Drugs 0.000 abstract description 17
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/56—Gas reservoirs
- H01H33/562—Means for avoiding liquefaction or for disposing of liquefaction products
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The application discloses a hierarchical heating device of a tank circuit breaker, wherein a heating module of the heating device comprises at least two stages of heating power, the heating device obtains a temperature parameter to be measured of the tank circuit breaker through a sensing module, the temperature parameter to be measured is displayed through a display adjusting module, and the heating power of the heating module is controlled according to the temperature parameter to be measured and a preset temperature threshold value, so that the temperature monitoring of sulfur hexafluoride gas in the tank circuit breaker and the hierarchical heating control of the heating module are realized, the problem that the sulfur hexafluoride gas is liquefied during use is avoided, and the problems of alarming and the reduction of the breaking capacity of the tank circuit breaker are avoided.
Description
Technical Field
The application relates to the technical field of automatic control, in particular to a classified heating device of a tank circuit breaker.
Background
With the continuous improvement of the voltage class of the power system in China, the problems of improving the insulation strength, breaking current capability and the like of the power system are increasingly prominent. In order to solve the problems in an overall way, the bottleneck of the improvement of the voltage level of the power grid is broken, and sulfur hexafluoride (SF 6) gas is widely used in power grid high-voltage equipment by virtue of the characteristics of excellent insulating capability, arc extinguishing performance, high electric strength and the like.
However, in the practical application process, the sulfur hexafluoride gas is easy to liquefy when in use, so that the problems of alarming and reducing breaking capacity of the circuit breaker are caused, and negative effects are brought to the safe and stable operation of the power grid.
Disclosure of Invention
In order to solve the technical problems, the application provides a grading heating device of a tank circuit breaker, which aims to solve the problem that sulfur hexafluoride gas is easy to liquefy when in use.
In order to achieve the technical purpose, the embodiment of the application provides the following technical scheme:
a tank circuit breaker staged heating device comprising: the device comprises a sensing module, a heating module and a display adjusting module; wherein,
The heating module comprises at least two stages of heating power;
the sensing module is used for acquiring the temperature parameter to be detected of the tank circuit breaker and transmitting the temperature parameter to the display adjusting module;
the display adjusting module is used for acquiring and displaying the temperature parameter to be detected and controlling the heating power of the heating module according to the temperature parameter to be detected and a preset temperature threshold.
Optionally, the temperature parameter to be measured includes: the internal gas temperature of the tank circuit breaker and/or the heating zone temperature of the tank circuit breaker.
Optionally, the sensing module includes a first sensing unit and a second sensing unit; the first sensing unit is used for acquiring the temperature of the gas inside the tank circuit breaker, and the second sensing unit is used for acquiring the temperature of a heating belt of the tank circuit breaker.
Optionally, the heating module includes: the heating device comprises a first switch, a heating wire and a power adjusting unit; wherein,
The first switch comprises a first sub switch and a second sub switch, the first sub switch is respectively and electrically connected with the positive electrode of the power supply and one end of the heating wire, and the second sub switch is respectively and electrically connected with the negative electrode of the power supply and one end of the power regulating unit;
one side of the power regulating unit, which is far away from the second sub-switch, is electrically connected with one end of the heating wire, which is far away from the first sub-switch;
the power regulating unit comprises at least two load branches, and is used for adjusting the load branches of an access loop under the control of the display regulating module.
Optionally, the power adjusting unit includes a first capacitor, a second capacitor, a third capacitor, a second switch, a third switch and a fourth switch; wherein,
The first capacitor and the second switch are connected in series to serve as one load branch, the second capacitor and the third switch are connected in series to serve as one load branch, and the third capacitor and the fourth switch are connected in series to serve as one load branch.
Optionally, the capacitance value of the second capacitor is larger than the capacitance value of the third capacitor.
Optionally, the specific process of controlling the heating power of the heating module by the display adjustment module according to the temperature to be measured and the preset temperature threshold includes:
when the temperature to be measured is smaller than a first temperature threshold, the second switch is controlled to be closed, when the temperature to be measured is smaller than a second temperature threshold, the second switch and the third switch are controlled to be closed, and when the temperature to be measured is smaller than a third temperature threshold, the third switch is controlled to be opened, and the second switch and the fourth switch are controlled to be closed;
When the temperature to be measured is greater than or equal to the first temperature threshold, the second switch, the third switch and the fourth switch are controlled to be disconnected;
the first temperature threshold is greater than the second temperature threshold, which is greater than the third temperature threshold.
Optionally, the display adjustment module is further configured to determine a working state of the heating belt of the tank circuit breaker according to the temperature parameter to be measured.
Optionally, the display adjustment module is further configured to send alarm information when it is determined that the working state of the heating belt is abnormal.
Optionally, the sensing module is specifically configured to measure a temperature parameter of the tank circuit breaker, and transmit the temperature parameter to be measured to the display adjustment module in a wireless transmission manner.
According to the technical scheme, the heating module of the heating device comprises at least two stages of heating power, the heating device obtains the temperature parameter to be measured of the tank circuit breaker through the sensing module, the temperature parameter to be measured is displayed through the display adjusting module, and the heating power of the heating module is controlled according to the temperature parameter to be measured and the preset temperature threshold value, so that temperature monitoring of sulfur hexafluoride gas in the tank circuit breaker and graded heating control of the heating module are realized, the problem that the sulfur hexafluoride gas is liquefied during use is avoided, and the problems of alarming and breaking capacity reduction of the tank circuit breaker are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a hierarchical heating device for a tank circuit breaker according to an embodiment of the present application;
Fig. 2 is a schematic structural diagram of a hierarchical heating device for a tank circuit breaker according to another embodiment of the present application;
FIG. 3 is a schematic diagram of a heating module according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a heating module according to another embodiment of the present application;
Fig. 5 is a schematic structural diagram of a heating module according to still another embodiment of the present application.
Detailed Description
As described in the background art, the sulfur hexafluoride gas is easy to liquefy during use, which causes problems such as breaker alarming and breaking capacity reduction.
In view of this, an embodiment of the present application provides a tank circuit breaker staged heating device, including: the device comprises a sensing module, a heating module and a display adjusting module; wherein,
The heating module comprises at least two stages of heating power;
the sensing module is used for acquiring the temperature parameter to be detected of the tank circuit breaker and transmitting the temperature parameter to the display adjusting module;
the display adjusting module is used for acquiring and displaying the temperature parameter to be detected and controlling the heating power of the heating module according to the temperature parameter to be detected and a preset temperature threshold.
The heating module of the heating device comprises at least two stages of heating power, the heating device obtains the temperature parameter to be measured of the tank circuit breaker through the sensing module, the temperature parameter to be measured is displayed through the display adjusting module, the heating power of the heating module is controlled according to the temperature parameter to be measured and the preset temperature threshold value, the temperature monitoring of sulfur hexafluoride gas inside the tank circuit breaker and the graded heating control of the heating module are realized, the problem that the sulfur hexafluoride gas is liquefied when in use is avoided, and the problems that the tank circuit breaker alarms and the breaking capacity is reduced are avoided.
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The embodiment of the application provides a classified heating device of a tank circuit breaker, which is shown in figure 1 and comprises the following components: a sensing module 10, a heating module 20 and a display adjustment module 30; wherein,
The heating module 20 includes at least two stages of heating power;
the sensing module 10 is configured to obtain a temperature parameter to be measured of the tank circuit breaker, and transmit the temperature parameter to the display adjustment module 30;
the display adjustment module 30 is configured to obtain and display the temperature parameter to be measured, and control the heating power of the heating module 20 according to the temperature parameter to be measured and a preset temperature threshold.
The heating module 20 of the heating device comprises at least two stages of heating power, the heating device obtains the temperature parameter to be detected of the tank circuit breaker through the sensing module 10, the temperature parameter to be detected is displayed through the display adjusting module 30, and the heating power of the heating module 20 is controlled according to the temperature parameter to be detected and the preset temperature threshold value, so that the temperature monitoring of sulfur hexafluoride gas in the tank circuit breaker and the graded heating control of the heating module 20 are realized, the problem that the sulfur hexafluoride gas is liquefied during use is avoided, and the problems of alarming and breaking capacity reduction of the tank circuit breaker are avoided.
The following describes a specific feasible structure or a specific working process of each module of the hierarchical heating device for the tank circuit breaker provided by the embodiment of the application.
Optionally, the temperature parameter to be measured includes: the internal gas temperature of the tank circuit breaker and/or the heating zone temperature of the tank circuit breaker.
In one embodiment of the present application, the temperature parameter to be measured includes an internal gas temperature of the tank circuit breaker, in another embodiment of the present application, the temperature parameter to be measured includes a heating zone temperature of the tank circuit breaker, in other embodiments of the present application, the temperature parameter to be measured includes both the internal gas temperature of the tank circuit breaker and the heating zone temperature of the tank circuit breaker. The present application is not limited thereto, and is specifically applicable as the case may be.
The internal gas temperature of the tank circuit breaker, namely the sulfur hexafluoride gas temperature in the tank circuit breaker, is helpful for management staff to realize the real-time temperature of sulfur hexafluoride gas in the tank circuit breaker by monitoring and displaying the internal gas temperature of the tank circuit breaker, so that the working state of the heating belt of the tank circuit breaker is judged according to the temperature.
The temperature of the heating belt of the tank circuit breaker directly reflects the current working state of the heating belt of the tank circuit breaker.
Accordingly, referring to fig. 2, the sensing module 10 includes a first sensing unit 11 and a second sensing unit 12; wherein the first sensing unit 11 is used for acquiring the internal gas temperature of the tank circuit breaker, and the second sensing unit 12 is used for acquiring the heating band temperature of the tank circuit breaker.
The temperature of the internal gas and the temperature of the heating belt are respectively measured through the two sensing units, so that the condition that the starting of the heating belt is inconsistent with the actual temperature of the gas in the tank due to the fact that the data of the temperature of the external environment is inconsistent with the actual temperature of the gas in the tank in the traditional measurement can be avoided; and whether the heating belt has faults after being started can be timely judged by collecting the temperature data of the heating belt.
Referring to fig. 3, the heating module 20 includes: a first switch K1, a heating wire R, and a power adjusting unit 31; wherein,
The first switch K1 includes a first sub-switch K1A and a second sub-switch K1B, where the first sub-switch K1A is electrically connected to the positive electrode of the power supply and one end of the heating wire R, and the second sub-switch K1B is electrically connected to the negative electrode of the power supply and one end of the power adjusting unit 31;
the power adjusting unit 31 is electrically connected to one end of the heating wire R away from the first sub-switch K1A at a side away from the second sub-switch K1B;
The power adjustment unit 31 includes at least two load branches, and the power adjustment unit 31 is configured to adjust the load branches of an access circuit under the control of the display adjustment module 30.
In this embodiment, the first switch K1 is a normally closed switch, and the two sub-switches of the first switch K1 are respectively connected in series to the positive and negative power branches of the power supply, so as to control the connection states of the power supply, the heating wire R and the power adjusting unit 31.
The load of each load branch in the power conditioning unit 31 may be the same or different, and the load of the load branch may be capacitive reactance, or may be impedance including inductance, resistance, and capacitance, which is not limited in this aspect of the present application.
Optionally, referring to fig. 4, the heating module 20 further includes a fuse RD connected in series between the first sub-switch K1A and the heating wire R, where the fuse RD is configured to avoid a problem of excessive current on an internal trunk of the heating module 20. When the current in the heating module 20 is excessively large, the fuse RD is melted to protect the heating module 20 and the entire device.
Optionally, as shown in fig. 5, the power adjusting unit 31 includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a second switch K2, a third switch K3, and a fourth switch; wherein,
The first capacitor C1 and the second switch K2 are connected in series to serve as one load branch, the second capacitor C2 and the third switch K3 are connected in series to serve as one load branch, and the third capacitor C3 and the fourth switch are connected in series to serve as one load branch.
In this embodiment, each load branch in the power adjustment unit 31 is a capacitive reactance, and compared with the implementation mode of impedance, the implementation mode of capacitive reactance adjustment for the ac power supply mode of the tank circuit breaker is simpler and more convenient.
Alternatively, the capacitance values of the second capacitor C2, the third capacitor C3 and the fourth capacitor may be the same, and the display adjustment module 30 may adjust/control the overall heating power of the heating module 20 by controlling the number of load branches connected to the loop.
Optionally, the capacitance values of the second capacitor C2, the third capacitor C3 and the fourth capacitor may also be different, specifically, in one embodiment of the present application, the second capacitor C2 is larger than the third capacitor C3. Correspondingly, the specific process of controlling the heating power of the heating module 20 by the display adjustment module 30 according to the temperature to be measured and the preset temperature threshold includes:
When the temperature to be measured is smaller than a first temperature threshold value, the second switch K2 is controlled to be closed, when the temperature to be measured is smaller than a second temperature threshold value, the second switch K2 and the third switch K3 are controlled to be closed, and when the temperature to be measured is smaller than a third temperature threshold value, the third switch K3 is controlled to be opened, and the second switch K2 and the fourth switch are controlled to be closed;
when the temperature to be measured is greater than or equal to the first temperature threshold value, the second switch K2, the third switch K3 and the fourth switch are controlled to be disconnected;
the first temperature threshold is greater than the second temperature threshold, which is greater than the third temperature threshold.
When the parameters of air pressure, ambient temperature and the like are different, the liquefaction temperature of sulfur hexafluoride is also different, so that the first temperature threshold, the second temperature threshold and the third temperature threshold can be set according to the parameters of air pressure, ambient temperature and the like of the area where the classified heating device of the tank circuit breaker is located. The display adjustment module 30 has the function of adjusting the preset temperature threshold, and a manager can adjust and set the preset temperature threshold according to actual situations.
On the basis of the above embodiments, in one embodiment of the present application, the display adjustment module 30 is further configured to send alarm information when it is determined that the operation state of the heating belt is abnormal.
The alarm information includes, but is not limited to, any one of a beep, an indicator light, a short message, a mail and other notification modes.
On the basis of the above embodiment, in another embodiment of the present application, the sensing module 10 is specifically configured to measure a temperature parameter of the tank circuit breaker, and transmit the temperature parameter to be measured to the display adjustment module 30 in a wireless transmission manner;
the wireless transmission mode improves the anti-interference performance of the system and ensures the accuracy and the integrity of temperature data transmission.
In summary, the embodiment of the application provides a hierarchical heating device for a tank circuit breaker, where the heating module 20 of the heating device includes at least two stages of heating power, the heating device obtains a temperature parameter to be measured of the tank circuit breaker through the sensing module 10, displays the temperature parameter to be measured through the display adjustment module 30, and controls the heating power of the heating module 20 according to the temperature parameter to be measured and a preset temperature threshold value, so as to realize temperature monitoring of sulfur hexafluoride gas inside the tank circuit breaker and hierarchical heating control of the heating module 20, avoid the problem that the sulfur hexafluoride gas is liquefied during use, and avoid the problems of alarm and reduced breaking capacity of the tank circuit breaker.
Features described in the embodiments in this specification may be replaced or combined with each other, and each embodiment is mainly described in the differences from the other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A tank circuit breaker staged heating device comprising: the device comprises a sensing module, a heating module and a display adjusting module; wherein,
The heating module comprises at least two stages of heating power;
the sensing module is used for acquiring the temperature parameter to be detected of the tank circuit breaker and transmitting the temperature parameter to the display adjusting module;
The display adjusting module is used for acquiring and displaying the temperature parameter to be detected and controlling the heating power of the heating module according to the temperature parameter to be detected and a preset temperature threshold;
the temperature parameters to be measured comprise: the internal gas temperature of the tank circuit breaker and/or the heating zone temperature of the tank circuit breaker;
the sensing module comprises a first sensing unit and a second sensing unit; the first sensing unit is used for acquiring the temperature of the internal gas of the tank circuit breaker, and the second sensing unit is used for acquiring the temperature of a heating belt of the tank circuit breaker;
the heating module includes: the heating device comprises a first switch, a heating wire and a power adjusting unit; wherein,
The first switch comprises a first sub switch and a second sub switch, the first sub switch is respectively and electrically connected with the positive electrode of the power supply and one end of the heating wire, and the second sub switch is respectively and electrically connected with the negative electrode of the power supply and one end of the power regulating unit;
one side of the power regulating unit, which is far away from the second sub-switch, is electrically connected with one end of the heating wire, which is far away from the first sub-switch;
the power regulating unit comprises at least two load branches, and is used for adjusting the load branches of an access loop under the control of the display regulating module.
2. The tank circuit breaker staged heating device of claim 1, wherein the power conditioning unit comprises a first capacitor, a second capacitor, a third capacitor, a second switch, a third switch and a fourth switch; wherein,
The first capacitor and the second switch are connected in series to serve as one load branch, the second capacitor and the third switch are connected in series to serve as one load branch, and the third capacitor and the fourth switch are connected in series to serve as one load branch.
3. The tank circuit breaker staged heating device of claim 2, wherein the capacitance value of the second capacitance is greater than the capacitance value of the third capacitance.
4. The hierarchical heating device of tank circuit breaker according to claim 3, wherein the specific process of controlling the heating power of the heating module by the display adjustment module according to the temperature parameter to be measured and a preset temperature threshold value comprises:
when the temperature parameter to be measured is smaller than a first temperature threshold, the second switch is controlled to be closed, when the temperature parameter to be measured is smaller than a second temperature threshold, the second switch and the third switch are controlled to be closed, and when the temperature parameter to be measured is smaller than a third temperature threshold, the third switch is controlled to be opened, and the second switch and the fourth switch are controlled to be closed;
When the temperature parameter to be measured is greater than or equal to the first temperature threshold value, the second switch, the third switch and the fourth switch are controlled to be disconnected;
the first temperature threshold is greater than the second temperature threshold, which is greater than the third temperature threshold.
5. The tank circuit breaker staged heating device as claimed in claim 1, wherein the display adjustment module is further configured to determine an operating state of a heating belt of the tank circuit breaker according to the temperature parameter to be measured.
6. The tank circuit breaker staged heating device as claimed in claim 5, wherein the display adjustment module is further configured to send an alarm message when it is determined that the operating state of the heating belt is abnormal.
7. The classified heating device of a tank circuit breaker according to claim 1, wherein the sensing module is specifically configured to measure a temperature parameter of the tank circuit breaker, and transmit the temperature parameter to be measured to the display adjustment module in a wireless transmission manner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110423360.2A CN113012977B (en) | 2021-04-20 | 2021-04-20 | Graded heating device of tank circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110423360.2A CN113012977B (en) | 2021-04-20 | 2021-04-20 | Graded heating device of tank circuit breaker |
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| CN113012977A CN113012977A (en) | 2021-06-22 |
| CN113012977B true CN113012977B (en) | 2024-09-10 |
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| CN114614455B (en) * | 2022-04-29 | 2023-10-03 | 国网陕西省电力有限公司电力科学研究院 | DC circuit breaker for multi-capacitance grading transfer current |
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| CN214411042U (en) * | 2021-04-20 | 2021-10-15 | 国网冀北电力有限公司检修分公司 | Tank-type circuit breaker staged heating device |
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| DE20317566U1 (en) * | 2003-11-12 | 2004-01-22 | Gräff GmbH Temperatur-, Meß- und Regeltechnik | Temperature sensor calibration apparatus has calibration block that has adjustable heating unit and reference sensor and that has receptacles for temperature sensors and reference sensor |
| FR2916977A1 (en) * | 2007-06-06 | 2008-12-12 | Engelhard Lyon Sa | STIMULATION OF SYNTHESIS OF MCR1, MCR2 AND μ OPIOID RECEPTORS. |
| CN103344902B (en) * | 2013-07-10 | 2016-02-17 | 上海大学 | A kind of LED transient thermal resistance measuring system |
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| CN214411042U (en) * | 2021-04-20 | 2021-10-15 | 国网冀北电力有限公司检修分公司 | Tank-type circuit breaker staged heating device |
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