CN116736096A - Bypass switch switching detection device for flexible direct-current converter valve submodule - Google Patents
Bypass switch switching detection device for flexible direct-current converter valve submodule Download PDFInfo
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- CN116736096A CN116736096A CN202310667165.3A CN202310667165A CN116736096A CN 116736096 A CN116736096 A CN 116736096A CN 202310667165 A CN202310667165 A CN 202310667165A CN 116736096 A CN116736096 A CN 116736096A
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- 238000010586 diagram Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The application discloses a bypass switch switching detection device of a flexible direct current converter valve submodule. The flexible direct current converter valve submodule separation and combination detection device comprises: the bypass switch mechanical display device comprises a metal rod and a permanent magnet, wherein the metal rod is used for manually switching the bypass switch and is used as a mechanical indication of switching the bypass switch, and the permanent magnet is arranged on the metal rod; the bypass switch electric display device comprises a light emitting diode, a magnetic induction switch, a power supply assembly and an assembly frame, wherein the magnetic induction switch is used for responding to magnetic field changes caused by the movement of a permanent magnet in the bypass switch mechanical display device and changing the on-off state of the bypass switch electric display device according to the magnetic field changes, and the light emitting state of the light emitting diode is influenced after the on-off state of the magnetic induction switch is changed. The application solves the technical problem that the on-off state of the sub-module bypass switch of the flexible direct current converter valve is difficult to monitor.
Description
Technical Field
The application relates to the field of electrical detection, in particular to a bypass switch switching detection device of a flexible direct current converter valve submodule.
Background
In the related technology, the voltage level of the flexible direct current transmission project is higher and the transmission capacity is larger, the flexible direct current converter valve is used as core equipment of the system, the whole operation is stable, and the improvement is still needed in the aspect of technical innovation. Wherein the sub-module bypass switch switching display is always a weakness of the prior art.
When the submodule of the flexible direct current converter valve bypasses, the actual switching state of the bypass switch in the submodule needs to be confirmed, and the bypass switch of 80% of the submodules cannot see the actual switching indication through the valve hall camera due to the limitation of factors such as electric safety distance, and can only be indirectly checked through the power indicator lamps of the central control board and the driving board of the submodule, and the confirmation of the process needs at least half an hour (the correct judgment can be made only by completing discharge through the equalizing resistor after the bypass of the fault submodule). In particular, when the sub-module fails in uplink communication and the bypass refuses to operate, the valve control system judges that the logic is successful in bypass, if the operation is continued, the sub-module is subjected to overvoltage burst, the overvoltage tripping of the converter valve and the like, so that the on-off state of the bypass switch of the sub-module can be timely confirmed to be critical, and when the bypass refuses to operate, the control redundancy of the control board in the sub-module can be used for lasting operation in a short time and needs to be timely disposed, so that the safety of equipment is ensured.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the application provides a device for detecting the switching state of a bypass switch of a submodule of a flexible direct-current converter valve, which aims to solve the technical problem that the switching state of the bypass switch of the submodule of the flexible direct-current converter valve is difficult to monitor.
According to an aspect of an embodiment of the present application, there is provided a bypass switch mechanical display device including: a metal rod, a permanent magnet; the metal rod is used for connecting a bypass switch of the flexible direct current converter valve submodule, extends out of a switching display hole of the bypass switch of the flexible direct current converter valve submodule and is used for displaying the mechanical position of the switching state of the bypass switch; the permanent magnet is fixed on the metal rod, and the permanent magnet changes the magnetic field state of the magnetic induction switch in the bypass switch electric display device along with the sliding of the metal rod, so as to change the on-off state of the magnetic induction switch.
According to another aspect of an embodiment of the present application, there is also provided a bypass switch electric display device including: the LED power supply device comprises a light emitting diode, a magnetic induction switch, a power supply assembly and an assembly frame, wherein the power supply assembly is used for supplying power to the light emitting diode; the magnetic induction switch is positioned between the light emitting diode and the power supply assembly and used for controlling the on-off of a circuit between the power supply assembly and the light emitting diode; the magnetic induction switch is used for responding to the magnetic field change caused by the motion of the permanent magnet in the bypass switch mechanical display device and changing the on-off state of the bypass switch mechanical display device according to the magnetic field change.
Optionally, the magnetic induction switch comprises a first switch and a second switch, and the first switch and the second switch are connected in parallel.
Optionally, the light emitting diode includes a first diode, a second diode, a third diode and a fourth diode, where the first diode and the second diode are connected in series to form a first diode group, the third diode and the fourth diode are connected in series to form a second diode group, and the first diode group and the second diode group are connected in parallel.
Optionally, the power supply assembly includes a battery, and the battery meets the following conditions: the battery capacity of the battery after 5 years of standby is not lower than 95%.
Optionally, the power supply assembly further comprises a solar charging panel, wherein the solar charging panel is connected with the battery and is used for charging the battery.
Optionally, the apparatus further comprises: and the assembly frame is used for fixing the bypass switch electric display device on the outer side of the bypass switch of the flexible direct current converter valve submodule.
According to another aspect of the embodiment of the present application, there is also provided a device for detecting the switching of a bypass switch of a flexible dc converter valve submodule, including: the bypass switch mechanical display device of any one of the above and the bypass switch electrical display device of any one of the above, wherein the magnetic induction switch of the bypass switch electrical display device is disposed at the following position: and the permanent magnet of the bypass switch electric display device changes the on-off state of the magnetic induction switch when sliding along with the metal rod.
In the embodiment of the application, the bypass switch switching detection device of the flexible direct current converter valve sub-module is improved, the bypass switch mechanical display device is internally provided with the metal rod and the permanent magnet, the bypass switch electric display device is arranged at the outer side of the bypass switch mechanical display device, and the magnetic induction switch of the bypass switch electric display device can respond to the magnetic field change caused by the position change of the permanent magnet, so that the luminous state of the diode in the electric display device is controlled, thereby realizing the technical effect of intuitively displaying the switching state of the bypass switch and being convenient for monitoring, and further solving the technical problem that the switching state of the bypass switch of the flexible direct current converter valve sub-module is difficult to monitor.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a block diagram of a bypass switch mechanical display device provided in accordance with an embodiment of the present application;
FIG. 2 is a block diagram of a bypass switch electrical display device provided in accordance with an embodiment of the present application;
FIG. 3 is a block diagram of a device for detecting the opening and closing of a bypass switch of a submodule of a flexible direct-current converter valve according to an embodiment of the present application;
fig. 4 is a schematic diagram of a bypass switch on/off detection device of a flexible dc converter valve submodule according to an alternative embodiment of the present application;
fig. 5 is an external schematic view of a bypass switch on/off detection device for a flexible dc converter valve submodule according to an alternative embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
First, partial terms or terminology appearing in the course of describing the embodiments of the application are applicable to the following explanation:
a flexible dc converter valve (abbreviated as "soft dc converter valve") is a device used in an electric power system, which can convert ac power into dc power or vice versa. The power supply system is composed of a plurality of sub-modules, and the conversion of electric energy is realized by controlling the switching of the sub-modules. In a power transmission and transformation system, a soft direct current converter valve is commonly used in a high-voltage direct current power transmission (HVDC) system, and has an important role in long-distance high-capacity power transmission.
Fig. 1 is a block diagram of a bypass switch mechanical display device according to an embodiment of the present application, and as shown in fig. 1, the bypass switch mechanical display device 10 includes the following parts: a metal rod 11, a permanent magnet 12; the metal rod is used for connecting a bypass switch of the flexible direct current converter valve sub-module, extends out of a switching display hole of the bypass switch of the flexible direct current converter valve sub-module and is used for displaying the mechanical position of the switching state of the bypass switch; the permanent magnet is fixed on the metal rod, and the permanent magnet changes the magnetic field state of the magnetic induction switch in the bypass switch electric display device along with the sliding of the metal rod, so that the on-off state of the magnetic induction switch is changed.
Fig. 2 is a block diagram of a bypass switch electric display device according to an embodiment of the present application, and as shown in fig. 2, the bypass switch electric display device 20 includes the following parts: the LED (light emitting diode) 21, the magnetic induction switch 22, the power supply assembly 23 and the assembly frame 24, wherein the power supply assembly 23 is used for supplying power to the LED 21; the magnetic induction switch 22 is positioned between the light emitting diode 21 and the power supply assembly 23 and is used for controlling the on-off of a circuit between the power supply assembly 23 and the light emitting diode 21; the magnetic induction switch 22 is used for responding to the magnetic field change caused by the motion of the permanent magnet 12 in the bypass switch mechanical display device 10 and changing the on-off state of the bypass switch mechanical display device according to the magnetic field change.
In the bypass switch electric display device, the light emitting diode does not emit light in the state that the magnetic induction switch is disconnected, and the power supply assembly supplies power to the light emitting diode when the magnetic induction switch is closed, so that the light emitting diode emits light, and an operation and maintenance person can indirectly determine the on-off state of the bypass switch by observing the light emitting state of the light emitting diode.
When the bypass switch is in a closed state, the metal rod is positioned at the first end of the opening and closing display hole of the bypass switch, and the magnetic field of the permanent magnet can enable the magnetic induction switch to be closed at the moment, so that the light-emitting diode emits light, and an operator can confirm that the bypass occurs in the soft direct current converter valve when observing the light-emitting diode emits light, and the bypass switch is closed; when the bypass switch is in an off state, the metal rod is positioned at the second end of the switching display hole, the magnetic field of the permanent magnet sensed by the magnetic induction switch is different from the scene, the magnetic induction switch can be in the off state, and the power supply assembly cannot supply power for the light emitting diode, so that an operation and maintenance person observes that the light emitting diode does not emit light, and further confirms that the bypass phenomenon does not occur in the soft direct current converter valve.
As an alternative embodiment, the magnetic induction switch may comprise a first switch and a second switch, the first switch and the second switch being connected in parallel. By arranging the two parallel magnetic induction switches, the problem of failure of each magnetic induction switch can be avoided, and the reliability of the device is improved.
As an alternative embodiment, the light emitting diode includes a first diode, a second diode, a third diode, and a fourth diode, where the first diode and the second diode are connected in series as a first diode group, the third diode and the fourth diode are connected in series as a second diode group, and the first diode group and the second diode group are connected in parallel. By adopting the two-to-two serial design of the light emitting diodes, the luminous intensity can be improved, so that operation and maintenance staff can find fault signals more clearly, rejection signals caused by diode case problems can be avoided, and the reliability of the device is improved.
As an alternative embodiment, the power supply assembly comprises a battery, which meets the following conditions: the battery capacity after 5 years of standby is not less than 95%. Optionally, the battery may be selected to have a capacity that satisfies the light emitting diode's normal operation for more than 1 hour to ensure sufficient time to alert field operation and maintenance personnel. The battery can support long-time standby, the battery capacity SOC is not obviously reduced, and the number of active operation and maintenance times of the soft direct current converter valve provided by the application can be obviously reduced.
As an alternative embodiment, the power supply assembly further comprises a solar charging panel, wherein the solar charging panel is connected with the battery for charging the battery.
As an alternative embodiment, the bypass switch electrical display device may further comprise a component frame, wherein the component frame is configured to secure the bypass switch electrical display device outside the bypass switch of the flexible dc converter valve submodule.
Fig. 3 is a block diagram of a flexible dc converter valve submodule bypass switch switching display device according to an embodiment of the present application, and as shown in fig. 3, the flexible dc converter valve submodule bypass switch switching display device may include: the bypass switch mechanical display device and the bypass switch electric display device of any one of the above, wherein the positions of the magnetic induction switch settings of the bypass switch electric display device satisfy the following conditions: the permanent magnet of the bypass switch electric display device changes the on-off state of the magnetic induction switch when sliding along with the metal rod.
The bypass switch switching detection device of the flexible direct current converter valve submodule comprises a bypass switch mechanical display device and a bypass switch electric display device, wherein the bypass switch mechanical display device comprises a metal rod and a permanent magnet; the bypass switch electric display device comprises a light emitting diode, a magnetic induction switch, a power supply assembly and an assembly frame, wherein the magnetic induction switch is used for responding to magnetic field change caused by the movement of a permanent magnet in the bypass switch mechanical display device and changing the on-off state of the bypass switch electric display device according to the magnetic field change, and the light emitting state of the light emitting diode is influenced after the on-off state of the magnetic induction switch is changed. Through improving flexible direct current converter valve submodule piece bypass switch divides and closes detection device, set up metal pole and permanent magnet in the flexible direct current converter valve submodule piece bypass switch divides and closes detection device, set up a bypass switch electric display device in flexible direct current converter valve bypass switch mechanical display device outside, electric display device's magnetic induction switch can respond the magnetic field change that the position change of permanent magnet arouses, and then the luminous state of the diode in the control electric display device, thereby realized showing the branch of bypass switch and closed state directly perceivedly, and then solved the technical problem that the branch of flexible direct current converter valve submodule piece bypass switch closes the state and is difficult to monitor.
Fig. 4 is a schematic diagram of a device for detecting the opening and closing of a bypass switch of a flexible dc converter valve submodule according to an alternative embodiment of the present application, and fig. 5 is an external schematic diagram of the device for detecting the opening and closing of the bypass switch of the flexible dc converter valve submodule according to an alternative embodiment of the present application, as shown in fig. 4 and fig. 5, a contact in a magnetic induction switch may be a normally open contact, and only when a metal rod drives a permanent magnet to move to a state indicating the closing of the bypass switch, the magnetic induction switch responds to a magnetic field change and closes the normally open contact, so that a battery may supply power to a light emitting diode, and the bypass switch is indicated to have a closing phenomenon, and an operation and maintenance person may determine the opening and closing state of the bypass switch of the flexible dc converter valve submodule by observing the light emitting states of 4 light emitting diodes.
The application is based on the scene, and according to the existing structure of the bypass switch of the flexible direct current converter valve submodule, an independent detection device is manufactured and arranged at the outer side of the bypass switch, a metal rod is led out of a split display hole of the bypass switch, and a permanent magnet is fixed at the upper part of the metal rod, so that the magnet is close to the inner side surface of the electric display device. When the bypass switch is in a switching-off state, magnetic induction inside the electric display device approaches the magnet of the metal rod far away from the switch, and the internal circuit is in a cut-off state; when the bypass switch is closed, the bypass switch leads out the metal rod and the permanent magnet to displace along with the metal rod and the permanent magnet, and the magnetic induction proximity switch in the electric display device is attracted by the action of the permanent magnet to switch on an internal circuit, so that the external light-emitting diode powered by the battery lightens. The electromagnetic environment of the on-site converter valve is complex, and the system reliability is further improved in terms of structural design and circuit design.
The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of units may be a logic function division, and there may be another division manner in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Claims (8)
1. A bypass switch mechanical display device, comprising: a metal rod, a permanent magnet;
the metal rod is used for connecting a bypass switch of the flexible direct current converter valve submodule, extends out of a switching display hole of the bypass switch of the flexible direct current converter valve submodule and is used for displaying the mechanical position of the switching state of the bypass switch;
the permanent magnet is fixed on the metal rod, and the permanent magnet changes the magnetic field state of the magnetic induction switch in the bypass switch electric display device along with the sliding of the metal rod, so as to change the on-off state of the magnetic induction switch.
2. A bypass switching electrical display device, comprising: the LED power supply device comprises a light emitting diode, a magnetic induction switch, a power supply assembly and an assembly frame, wherein the power supply assembly is used for supplying power to the light emitting diode; the magnetic induction switch is positioned between the light emitting diode and the power supply assembly and used for controlling the on-off of a circuit between the power supply assembly and the light emitting diode; the magnetic induction switch is used for responding to the magnetic field change caused by the motion of the permanent magnet in the bypass switch mechanical display device and changing the on-off state of the bypass switch mechanical display device according to the magnetic field change.
3. The apparatus of claim 2, wherein the magnetic induction switch comprises a first switch and a second switch, the first switch and the second switch being connected in parallel.
4. The device of claim 2, wherein the light emitting diode comprises a first diode, a second diode, a third diode, and a fourth diode, wherein the first diode and the second diode are connected in series as a first diode group, the third diode and the fourth diode are connected in series as a second diode group, and the first diode group and the second diode group are connected in parallel.
5. The apparatus of claim 2, wherein the power supply assembly comprises a battery that meets the following conditions: the battery capacity of the battery after 5 years of standby is not lower than 95%.
6. The apparatus of claim 5, wherein the power supply assembly further comprises a solar charging pad, wherein the solar charging pad is coupled to the battery for charging the battery.
7. The apparatus as recited in claim 2, further comprising: and the assembly frame is used for fixing the bypass switch electric display device on the outer side of the bypass switch of the flexible direct current converter valve submodule.
8. The utility model provides a flexible direct current converter valve submodule piece bypass switch divides to close detection device which characterized in that includes: the bypass switch mechanical display device of claim 1 and the bypass switch electrical display device of any one of claims 2 to 7, wherein the position of the magnetic induction switch setting of the bypass switch electrical display device satisfies the following condition: the permanent magnet of the bypass switch mechanical display device changes the on-off state of the magnetic induction switch when sliding along with the metal rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310667165.3A CN116736096A (en) | 2023-06-06 | 2023-06-06 | Bypass switch switching detection device for flexible direct-current converter valve submodule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310667165.3A CN116736096A (en) | 2023-06-06 | 2023-06-06 | Bypass switch switching detection device for flexible direct-current converter valve submodule |
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| CN116736096A true CN116736096A (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310667165.3A Pending CN116736096A (en) | 2023-06-06 | 2023-06-06 | Bypass switch switching detection device for flexible direct-current converter valve submodule |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117174511A (en) * | 2023-11-02 | 2023-12-05 | 西安西电电力系统有限公司 | State light reporting device and method for bypass switch of flexible direct-current transmission power module |
-
2023
- 2023-06-06 CN CN202310667165.3A patent/CN116736096A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117174511A (en) * | 2023-11-02 | 2023-12-05 | 西安西电电力系统有限公司 | State light reporting device and method for bypass switch of flexible direct-current transmission power module |
| CN117174511B (en) * | 2023-11-02 | 2024-03-01 | 西安西电电力系统有限公司 | State light reporting device and method for bypass switch of flexible direct-current transmission power module |
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