CN109787194B - Method for realizing closing and locking after capacitor protection tripping - Google Patents
Method for realizing closing and locking after capacitor protection tripping Download PDFInfo
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- CN109787194B CN109787194B CN201910194021.4A CN201910194021A CN109787194B CN 109787194 B CN109787194 B CN 109787194B CN 201910194021 A CN201910194021 A CN 201910194021A CN 109787194 B CN109787194 B CN 109787194B
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- 239000003990 capacitor Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 86
- 229910052742 iron Inorganic materials 0.000 claims abstract description 36
- 238000007689 inspection Methods 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The invention discloses a method for realizing closing and locking after capacitor protection tripping, which comprises the following steps: selecting a protection device, installing the protection device, configuring a reset button, after the fault protection action switch trips, the closing holding relay HBJ is in a conducting state, magnetic force is generated after a coil is electrified and transmitted to an iron core to be electrified, a spring is opened, an iron hook drives a traction rod to move simultaneously, a tripping opening brake is opened after protection action, a closing loop is disconnected, and the switch cannot be electrically closed, the loop is in a self-holding state, the electric switch-on operation can not be carried out all the time under the condition of no external manual reset, after the detection is finished, after the button is pressed down, the iron hook moves down to be clamped with the traction rod, the whole body is in a reset state, the closing coil HQ is conducted, so that the capacitor is closed completely, an electric closing loop is always in a disconnected state before the reset button is pressed down on site, and the capacitor can be effectively prevented from being put into operation without an inspection test after fault tripping.
Description
Technical Field
The invention relates to a method for protecting tripping of a capacitor, in particular to a method for realizing closing and locking after the capacitor is protected to trip.
Background
When the capacitor bank in operation is tripped by the fault protection action switch, the capacitor bank cannot be easily sent in a trial mode, the capacitor bank needs to be switched to a maintenance state, the capacitor switch is sent in a trial mode after no problem exists in a check test, and the capacitor bank is put into operation. In actual operation, after the capacitor protection is tripped, the capacitor bank can be put into operation again without inspection and test due to reasons that personnel communication is not smooth or a dispatching end reactive power optimization system sends a switching-on command and the like, uncertain factors are brought to safe and stable operation of a power grid and equipment, and great potential safety hazards exist.
Disclosure of Invention
The invention aims to provide a method for realizing closing and locking after capacitor protection tripping, which has the advantages of effectively preventing the capacitor from being put into operation without inspection test after fault tripping and ensuring safety, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a method for realizing closing and locking after capacitor protection tripping comprises the following steps:
s1: selecting a protection device, wherein a protection action normally-closed contact in the protection device is in a closed state when a protection capacitor normally operates, does not influence the flow of current of the protection capacitor, is in an open state after protection action, and still has a self-holding function, namely the contact is required to be manually reset after the action to return to the closed state;
s2: installing a protection device, connecting a protection action normally closed contact opened by the protection device to a capacitor electric closing loop, finding out a proper spatial position between a reclosing switch and a closing coil of the capacitor to be connected in series, protecting the closing loop to be conducted in normal operation, performing electric closing operation on a switch, disconnecting the closing loop after protection action, and not performing electric closing operation on the switch, wherein the loop is in a self-holding state and cannot perform electric closing operation all the time under the condition of no external manual reset;
s3: the reset button is configured, when a field inspection test is correct, the button connected with the protection action normally closed contact needs to be manually operated to unlock the capacitor to achieve the closing operation of the capacitor, after the reset button is manually pressed, the protection action normally closed contact is closed and conducted, a closing loop is conducted again, and at the moment, the capacitor switch can be electrically closed.
Further, protection device comprises lock subassembly and the traction lever of connecting on the condenser, and the lock subassembly includes coil, lock frame and iron core, and the coil is placed in the inside of lock frame, and the iron core is installed on one side of lock frame, installs on the top surface of iron core around lock frame pivoted iron hook, and the side of iron hook is connected with the spring, and the iron hook passes through spring coupling on the lock frame, mutual block between the port of iron hook and traction lever.
Furthermore, the coil is connected with a lead connected with a reclosing switch and electrified, the draw bar is connected with the parallel ends of the closing holding coil HBJ, the tripping holding coil TBJ and the anti-tripping relay TBJV, the iron hook is in a conducting state after being contacted with the draw bar, and the iron hook is separated from the draw bar after protection action.
Furthermore, the top end of the iron hook is connected with the button, and the button drives the iron hook 3 to move downwards after being pressed and is clamped with the iron hook.
Compared with the prior art, the invention has the beneficial effects that:
the method for realizing closing and locking after the capacitor protective tripping operation has the advantages that after the fault protection action switch trips, the closing holding relay HBJ is in a conducting state, magnetic force is generated after a coil is electrified and transmitted to an iron core to be electrified, a spring is opened, an iron hook drives a traction rod to move simultaneously, a tripping opening brake is opened after protection action, a closing loop is disconnected, and the switch cannot be electrically closed, the loop is in a self-holding state, the electric switch-on operation can not be carried out all the time under the condition of no external manual reset, after the detection is finished, after the button is pressed down, the iron hook moves down to be clamped with the traction rod, the whole body is in a reset state, the closing coil HQ is conducted, so that the capacitor is closed completely, an electric closing loop is always in a disconnected state before the reset button is pressed down on site, and the capacitor can be effectively prevented from being put into operation without an inspection test after fault tripping.
Drawings
Fig. 1 is a diagram of a conventional closing circuit of the present invention;
FIG. 2 is a diagram of a closed state of a closing circuit diagram protection action of the present invention;
FIG. 3 is a diagram of a protection action disconnect state of a closing circuit diagram of the present invention;
fig. 4 is a structural view of the protection device of the present invention.
In the figure: 1. a lock assembly; 11. a coil; 12. a lock frame; 13. an iron core; 2. a draw bar; 3. an iron hook; 31. a spring.
Detailed Description
The technical scheme in the embodiment of the invention will be made clear below by combining the attached drawings in the embodiment of the invention; fully described, it is to be understood that the described embodiments are merely exemplary of some, but not all, embodiments of the invention and that all other embodiments, which can be derived by one of ordinary skill in the art based on the described embodiments without inventive faculty, are within the scope of the invention.
Referring to fig. 1, in the conventional capacitor bank, after a fault protection action switch trips, the capacitor bank cannot be easily tried, the capacitor bank needs to be switched to a maintenance state, a capacitor switch is tried after a test is performed without any problem, the capacitor bank is put into operation, after capacitor protection tripping is completed, a reclosing switch closes a circuit breaker in a short time after tripping is completed, remote closing of a tripping loop is in a closed state, a closing holding relay HBJ and a trip prevention relay TBJV are closed, a closing coil HQ is switched on, so that the capacitor completes closing, and an operation accident of switch misclosing is caused.
Referring to fig. 2-3, a method for implementing closing locking after capacitor tripping protection includes the following steps:
the method comprises the following steps: selecting a protection device, wherein a protection action normally-closed contact in the protection device is in a closed state when a protection capacitor normally operates, does not influence the flow of current of the protection capacitor, is in an open state after protection action, and still has a self-holding function, namely the contact is required to be manually reset after the action to return to the closed state;
step two: installing a protection device, connecting a protection action normally closed contact opened by the protection device to a capacitor electric closing loop, finding out a proper spatial position between a reclosing switch and a closing coil of the capacitor to be connected in series, protecting the closing loop to be conducted in normal operation, performing electric closing operation on a switch, disconnecting the closing loop after protection action, and not performing electric closing operation on the switch, wherein the loop is in a self-holding state and cannot perform electric closing operation all the time under the condition of no external manual reset;
step three: the reset button is configured, when a field inspection test is correct, the button connected with the protection action normally closed contact needs to be manually operated to unlock the capacitor to achieve the closing operation of the capacitor, after the reset button is manually pressed, the protection action normally closed contact is closed and conducted, a closing loop is conducted again, and at the moment, the capacitor switch can be electrically closed.
A normally closed auxiliary contact is connected in series with a neutral point between a reclosing coil and a closing coil, and the purpose of closing can be achieved only by operation.
Referring to fig. 4, the protection device is composed of a lock assembly 1 and a drawbar 2 connected to a capacitor, the lock assembly 1 includes a coil 11, a lock frame 12 and an iron core 13, the coil 11 is placed inside the lock frame 12, the coil 11 is connected to a wire connected to a reclosing switch and energized, the drawbar 2 is connected to parallel ends of a closing holding coil HBJ, a trip holding coil TBJ and an anti-trip relay TBJV, the iron hook 3 is in a conductive state after contacting the drawbar 2, after protection, the iron hook 3 is separated from the traction rod 2, the iron core 13 is installed beside the lock frame 12, the iron hook 3 rotating around the lock frame 12 is installed on the top surface of the iron core 13, the side surface of the iron hook 3 is connected with the spring 31, the iron hook 3 is connected to the lock frame 12 through the spring 31, the iron hook 3 and the port of the traction rod 2 are mutually clamped, the top end of the iron hook 3 is connected with the button, and the button is pressed to drive the iron hook 3 to move downwards and be clamped with the iron hook 3.
When a fault protection action switch trips, a closing relay is in a conducting state, after the coil 11 is electrified and transmitted to an iron core 13 to absorb electricity, magnetic force is generated, a spring 31 is opened, an iron hook 3 drives a traction rod 2 to move simultaneously, a closing loop of a tripping opening switch is disconnected after protection action, the switch cannot be electrically closed, the loop is in a self-holding state, the electric closing operation cannot be performed all the time under the condition of no external manual reset, after detection is finished, a button is pressed down, the iron hook 3 moves down and is clamped with the traction rod 2, the whole body is in a resetting state, a closing coil HQ is conducted, and therefore a capacitor completes closing.
In summary, according to the method for realizing closing and locking after the capacitor protection tripping, after the fault protection action switch trips, the closing holding relay HBJ is in a conducting state, after the coil 11 is electrified and transmitted to the iron core 13 to be electrified, magnetic force is generated, the spring 31 is opened, the iron hook 3 drives the traction rod 2 to move simultaneously, the tripping and opening brake are disconnected after protection action, the switch-on circuit is disconnected, the switch cannot be electrically switched on, the loop is in a self-holding state, the electric switch-on operation can not be carried out all the time under the condition of no external manual reset, after the detection is finished, after the button is pressed down, the iron hook 3 moves downwards to be clamped with the traction rod 2, the whole body is in a reset state, and the closing coil HQ is conducted, so that the capacitor is closed completely, an electric closing loop is always in a disconnected state before the reset button is pressed down on site, and the capacitor can be effectively prevented from being put into operation without an inspection test after fault tripping.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (3)
1. A method for realizing closing and locking after capacitor protection tripping is characterized by comprising the following steps:
s1: selecting a protection device, wherein a protection action normally-closed contact in the protection device is in a closed state when a protection capacitor normally operates, does not influence the flow of current of the protection capacitor, is in an open state after protection action, and still has a self-holding function, namely the contact is required to be manually reset after the action to return to the closed state;
s2: installing a protection device, connecting a protection action normally closed contact opened by the protection device to a capacitor electric closing loop, finding out a proper spatial position between a reclosing switch and a closing coil of the capacitor to be connected in series, protecting the closing loop to be conducted in normal operation, performing electric closing operation on a switch, disconnecting the closing loop after protection action, and not performing electric closing operation on the switch, wherein the loop is in a self-holding state and cannot perform electric closing operation all the time under the condition of no external manual reset;
s3: a reset button is configured, when a field inspection test is correct, a button connected with a protection action normally closed contact needs to be manually operated to unlock the switch, so that the switch-on operation of the capacitor is realized, after the reset button is manually pressed, the protection action normally closed contact is closed and conducted, a switch-on loop is conducted again, and at the moment, the capacitor switch can be electrically switched on;
protection device comprises lock subassembly (1) and traction lever (2) of connection on the condenser, lock subassembly (1) includes coil (11), lock frame (12) and iron core (13), inside at lock frame (12) is placed in coil (11), one side at lock frame (12) is installed in iron core (13), install on the top surface of iron core (13) around lock frame (12) pivoted iron hook (3), the side of iron hook (3) is connected with spring (31), iron hook (3) are connected on lock frame (12) through spring (31), mutual block between the port of iron hook (3) and traction lever (2).
2. The method for realizing closing and locking after tripping of capacitor protection according to claim 1, characterized in that: the coil (11) is connected with a lead connected with a reclosing switch and electrified, the draw bar (2) is connected with the parallel ends of a closing holding coil HBJ, a tripping holding coil TBJ and an anti-tripping relay TBJV, the iron hook (3) is in a conducting state after being contacted with the draw bar (2), and the iron hook (3) is separated from the draw bar (2) after protection action.
3. The method for realizing closing and locking after tripping of capacitor protection according to claim 1, characterized in that: the top end of the iron hook (3) is connected with the button, and the button is pressed down to drive the iron hook (3) to move downwards and be clamped with the iron hook (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910194021.4A CN109787194B (en) | 2019-03-14 | 2019-03-14 | Method for realizing closing and locking after capacitor protection tripping |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910194021.4A CN109787194B (en) | 2019-03-14 | 2019-03-14 | Method for realizing closing and locking after capacitor protection tripping |
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| CN109787194A CN109787194A (en) | 2019-05-21 |
| CN109787194B true CN109787194B (en) | 2020-03-10 |
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| CN112063446A (en) * | 2020-09-07 | 2020-12-11 | 和县腾达油脂有限责任公司 | Frying pan capable of avoiding scorching during frying with sesame oil and implementation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204230110U (en) * | 2014-12-15 | 2015-03-25 | 孙锰 | With the control circuit of high-voltage circuit breaker of locking link |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204230110U (en) * | 2014-12-15 | 2015-03-25 | 孙锰 | With the control circuit of high-voltage circuit breaker of locking link |
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