CN212485807U - Automatic time-delay switching-on control loop of capacitor high-voltage switch cabinet - Google Patents
Automatic time-delay switching-on control loop of capacitor high-voltage switch cabinet Download PDFInfo
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- CN212485807U CN212485807U CN202021260293.4U CN202021260293U CN212485807U CN 212485807 U CN212485807 U CN 212485807U CN 202021260293 U CN202021260293 U CN 202021260293U CN 212485807 U CN212485807 U CN 212485807U
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- 239000003990 capacitor Substances 0.000 title claims abstract description 23
- 230000005611 electricity Effects 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
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Abstract
The utility model belongs to the technical field of the time delay combined floodgate, concretely relates to condenser high tension switchgear automatic time delay combined floodgate control circuit, including divide-shut brake change over switch 1KK, distant place change over switch 1ZK on the spot, parallel connection's distant place combined floodgate control circuit, distant place separating brake control circuit, combined floodgate control circuit on the spot, separating brake control circuit on the spot and time delay relay start-up loop. The capacitor switching-on device can effectively prevent operators from switching on the capacitor which is not fully discharged, and effectively protects the safety of the operators and equipment.
Description
Technical Field
The utility model belongs to the technical field of the time delay combined floodgate, concretely relates to automatic time delay combined floodgate control circuit of condenser high tension switchgear.
Background
High-voltage capacitors are used in high-voltage switch cabinets for power supply compensation. In an ac circuit during operation of the power system, if the capacitor is switched on again when charged, the capacitor may be subjected to a peak value of 2 times or more of the rated voltage, which is detrimental to the capacitor. At the same time, a large inrush current is also caused, which may cause the circuit breaker to trip. Therefore, after the capacitor high-voltage switch cabinet is disconnected every time, the capacitor high-voltage switch cabinet needs to be discharged, and the capacitor high-voltage switch cabinet can be closed again after the discharge is sufficient.
The patent document with publication number 202940189U discloses a delay switching-on device, which comprises a voltage regulating module and a delay module, wherein the voltage regulating module is connected with the delay module, and the device mainly realizes the delay function through the timing of a timing chip, thereby increasing the cost of the system and further increasing the operation cost and complexity of the system.
Disclosure of Invention
An object of the utility model is to provide a condenser high tension switchgear automatic time delay combined floodgate control circuit to the problem that exists among the prior art.
The technical scheme of the utility model is that:
an automatic time-delay switching-on control loop of a capacitor high-voltage switch cabinet comprises a switching-on and switching-off change-over switch 1KK, a remote local change-over switch 1ZK, a remote switching-on control loop, a local switching-on control loop, a remote switching-off control loop, a local switching-off control loop and a time-delay relay starting loop which are connected in parallel.
The remote closing control loop comprises a positive power supply, a 3-4 contact of a remote control/near control change-over switch 1ZK, a 1-2 contact of a 1CLP2 pressing plate, a remote closing relay normally-open contact YHJ-1 in an operation box, an anti-tripping relay normally-closed contact TBJV1-2, a closing holding relay coil HBJ, a 14-15 contact of a time delay relay 1SJ, a CZ (CZ) 4-CZ 14 contact consisting of a breaker normally-closed contact and a closing coil and a negative power supply.
The local closing control loop comprises a positive power supply, a positive contact and a negative contact of a 1WFS five-prevention lockset, a 1-2 contact of a remote control/near control change-over switch 1ZK, a 1-2 contact of an opening/closing change-over switch 1KK, an anti-tripping relay normally closed contact TBJV1-2, a closing holding relay coil HBJ, a 14-15 contact of a time delay relay 1SJ, a CZ (CZ) 4-CZ 14 contact consisting of a breaker normally closed contact and a closing coil and a negative power supply.
The remote opening control loop comprises a positive power supply, a 3-4 contact of a remote control/near control change-over switch 1ZK, a 1-2 contact of a 1CLP2 pressing plate, a remote tripping relay normally open contact YTJ-1 in an operation box, a tripping holding relay coil TBJ, a CZ (CZ) 31-CZ 30 contact consisting of a breaker normally open contact and a tripping coil, and a negative power supply.
The local brake-separating control loop comprises a positive power supply, a positive contact and a negative contact of a 1WFS five-prevention lockset, a 1-2 contact of a remote control/near control change-over switch 1ZK, a 3-4 contact of a switch-separating/closing change-over switch 1KK, a trip holding relay coil TBJ, a CZ (CZ) 31-CZ 30 contact consisting of a normally open contact of a breaker and a trip coil, and a negative power supply.
The time delay relay starting loop comprises a positive power supply, a breaker sub-position auxiliary contact DL, a time relay 1SJ coil and a negative electricity loop.
The intelligent control system comprises a local switching-on control loop, a signal indicator light and a control circuit, wherein the signal indicator light comprises a red light and a green light, and the red light is connected with a normally open contact HWJ of a switching-on relay through a resistor and connected in parallel to the local switching-on control loop; the green light is connected with a normally open contact TWJ of the jump relay through a resistor and is connected in parallel with the local brake-separating control loop, when the breaker is in a closed position, a brake-closing position relay coil HWJ is electrified, the normally open contact of the HWJ relay is closed, and the red light is on; when the circuit breaker is in a separated position, a coil TWJ of the relay at the tripping position is electrified, a normally open contact of the TWJ relay is closed, and a green light is on.
Specifically, 3-4 joints of a remote control/near control change-over switch 1ZK in the remote closing control loop are respectively connected with a positive power supply and a 1CLP2 pressing plate 1 joint, a 1CLP2 pressing plate 2 joint is connected with a remote relay normally open contact YHJ-1 in an operation box, the remote relay normally open contact YHJ-1 in the operation box is connected with an anti-tripping relay normally closed contact TBJV1-2 and a closing holding relay coil HBJ through a triode, the other end of the closing holding relay coil HBJ is connected with a 14 joint of a time delay relay 1SJ, a 15 joint of the time delay relay 1SJ is connected with a CZ:4 joint formed by a breaker normally closed contact and a closing coil, and a CZ:14 joint formed by the breaker normally closed contact and the closing coil is connected with a negative power supply.
Specifically, the positive contact and the negative contact of a 1WFS five-prevention lockset in the on-site closing control loop are respectively connected with a positive power supply and a 1-2 contact of a remote control/near control change-over switch 1ZK, the 1-2 contact of the remote control/near control change-over switch 1ZK is connected with a 1-2 contact of a closing and opening change-over switch 1KK, the 1-2 contact of the switching-on/off switch 1KK is connected with an anti-tripping relay normally closed contact TBJV1-2, the anti-tripping relay normally closed contact TBJV1-2 is connected with a closing holding relay coil HBJ, the closing maintaining relay coil HBJ is connected with 14-15 joints of the time delay relay 1SJ, and the 14-15 joints of the time delay relay 1SJ are connected with CZ (CZ) formed by a normally closed contact and a closing coil of the circuit breaker: 4-CZ:14, connecting a contact, and forming a normally closed contact of the circuit breaker and a closing coil by CZ:4-CZ: the 14 contact is connected to a negative power supply.
Specifically, 3-4 joints of a remote control/near control change-over switch 1ZK in the remote brake-separating control loop are respectively connected with a positive power supply and a 1CLP2 pressing plate 1 joint, a 1CLP2 pressing plate 2 joint is connected with a remote tripping relay normally-open contact YTJ-1 in an operation box, the remote tripping relay normally-open contact YTJ-1 in the operation box is connected with a tripping holding relay coil TBJ through a triode, the other end of the tripping holding relay coil TBJ is connected with a CZ (CZ) 31 joint consisting of a breaker normally-open contact and a tripping coil, and a CZ 30 joint consisting of the breaker normally-open contact and the tripping coil is connected with a negative power supply.
Specifically, the positive contact and the negative contact of a 1WFS five-prevention lockset in the local brake-separating control loop are respectively connected with a positive power supply and a 1-2 contact of a remote control/near control change-over switch 1ZK, the 1-2 contact of the remote control/near control change-over switch 1ZK is connected with a 3-4 contact of a switch-separating/closing change-over switch 1KK, the 3-4 contact of the switch-separating/closing change-over switch 1KK is connected with a trip holding relay coil TBJ, a trip holding relay coil TBJ is connected with a CZ (CZ) 31-CZ 30 contact formed by a normally open contact of a circuit breaker and a trip coil, and the CZ 31-CZ 30 contact formed by the normally open contact of the circuit breaker and the trip coil is connected with a negative power supply.
The utility model has the advantages that: the method is characterized in that a positive electricity-breaker open position auxiliary contact-time relay 1SJ coil-negative electricity loop is added in a closing control loop of a capacitor high-voltage switch cabinet breaker, when the breaker is in an open position, the loop is connected, and the 1SJ time relay is excited. Meanwhile, a 1SJ normally-open auxiliary contact is added in front of a closing coil of the closing control circuit, and after 1SJ excitation, the normally-open contact is closed, and the capacitor high-voltage switch cabinet can normally perform closing operation after certain time delay. The utility model discloses can prevent effectively that the operation personnel from closing a floodgate to the condenser that does not fully discharge, effectively protect operation personnel and equipment safety.
Drawings
Fig. 1 is the schematic diagram of the operation circuit structure of the capacitor high-voltage switch cabinet of the present invention.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example 1
Fig. 1 is a schematic diagram of an operation circuit structure of the capacitor high-voltage switch cabinet provided in this embodiment.
An automatic delay switching-on control loop of a capacitor high-voltage switch cabinet comprises a switching-on and switching-off change-over switch 1KK, a remote local change-over switch 1ZK, a remote switching-on control loop, a local switching-off control loop and a time delay relay starting loop which are connected in parallel.
The time delay relay starting loop comprises a positive power supply, a breaker sub-position auxiliary contact DL, a time relay 1SJ coil and a negative electricity loop.
The on-site switching-on control circuit also comprises a signal indicator lamp, wherein the signal indicator lamp comprises a red lamp and a green lamp, and the red lamp is connected with the normally open contact HWJ of the on-site relay through a resistor and is connected in parallel with the on-site switching-on control circuit; the green light is connected with a normally open contact TWJ of the jump relay through a resistor and is connected in parallel with the local brake-separating control loop, when the breaker is in a closed position, a brake-closing position relay coil HWJ is electrified, the normally open contact of the HWJ relay is closed, and the red light is on; when the circuit breaker is in a separated position, a coil TWJ of the relay at the tripping position is electrified, a normally open contact of the TWJ relay is closed, and a green light is on.
3-4 joints of a remote control/near control change-over switch 1ZK in the remote closing control loop are respectively connected with a positive power supply and a 1CLP2 pressing plate 1 joint, a 1CLP2 pressing plate 2 joint is connected with a remote closing relay normally open contact YHJ-1 in an operation box, the remote closing relay normally open contact YHJ-1 in the operation box is connected with an anti-tripping relay normally closed contact TBJV1-2 and a closing holding relay coil HBJ through a triode, the other end of the closing holding relay coil HBJ is connected with a 14 joint of a time delay relay 1SJ, a 15 joint of the time delay relay 1SJ is connected with a CZ:4 joint formed by a breaker normally closed contact and a closing coil, and a CZ:14 joint formed by the breaker normally closed contact and the closing coil is connected with a negative power supply.
3-4 joints of a remote control/near control change-over switch 1ZK in the remote brake-separating control loop are respectively connected with a positive power supply and a 1CLP2 pressing plate 1 joint, a 1CLP2 pressing plate 2 joint is connected with a remote tripping relay normally open contact YTJ-1 in an operation box, the remote tripping relay normally open contact YTJ-1 in the operation box is connected with a tripping holding relay coil TBJ through a triode, the other end of the tripping holding relay coil TBJ is connected with a CZ:31 joint consisting of a breaker normally open contact and a tripping coil, and the CZ:30 joint consisting of the breaker normally open contact and the tripping coil is connected with a negative power supply.
The positive and negative contacts of the 1WFS five-prevention lockset in the local closing control loop are respectively connected with the positive power supply and the 1-2 contact of the remote control/near control change-over switch 1ZK, the 1-2 contact of the remote control/near control change-over switch 1ZK is connected with the 1-2 contact of the switching-on/off change-over switch 1KK, the 1-2 contact of the switching-on/off switch 1KK is connected with an anti-tripping relay normally closed contact TBJV1-2, the anti-tripping relay normally closed contact TBJV1-2 is connected with a closing holding relay coil HBJ, the closing maintaining relay coil HBJ is connected with 14-15 joints of the time delay relay 1SJ, and the 14-15 joints of the time delay relay 1SJ are connected with CZ (CZ) formed by a normally closed contact and a closing coil of the circuit breaker: 4-CZ:14, connecting a contact, and forming a normally closed contact of the circuit breaker and a closing coil by CZ:4-CZ: the 14 contact is connected to a negative power supply.
The positive and negative contacts of the 1WFS five-prevention lockset in the local brake-separating control loop are respectively connected with a positive power supply and a 1-2 contact of a remote control/near control change-over switch 1ZK, the 1-2 contact of the remote control/near control change-over switch 1ZK is connected with a 3-4 contact of a switch-separating/closing change-over switch 1KK, the 3-4 contact of the switch-separating/closing change-over switch 1KK is connected with a trip holding relay coil TBJ, the trip holding relay coil TBJ is connected with a CZ (CZ: 31-CZ:30 contact formed by a normally open contact of a circuit breaker and a trip coil, and the CZ:31-CZ:30 contact formed by the normally open contact of the circuit breaker and the trip coil is connected with a negative.
The working principle of the starting loop of the time delay relay is as follows: when the breaker is in a position-dividing state, a time delay relay starting loop is conducted through a power supply, a CZ (CZ) 46-CZ (CZ-CZ) 12 contact of a breaker DL normally closed contact and a 1-2 contact of a time delay relay 1SJ coil, the time delay relay is excited, and a 14-15 contact of a normally open contact 1SJ of the time delay relay is closed.
Starting a red light loop working principle: the circuit breaker is composed of a resistor, a red light and a normally open contact of a closing relay, when the circuit breaker is in a closing position, an HWJ relay coil is electrified, the normally open contact of the HWJ relay is closed, and the red light is on.
Starting a green light loop working principle: the circuit breaker is composed of a resistor, a green light and a normally open contact of a jump relay, when the circuit breaker is divided into two parts, a TWJ relay coil is electrified, the normally open contact of the TWJ relay is closed, and the green light is on.
TWJ/HWJ primarily functions to provide a switch position indication. HWJ are connected in parallel to a trip circuit that has a breaker normally open auxiliary contact in series before the switch trip coil. When the switch is in the closed position, the normally open auxiliary contact is closed, HWJ relay coil is charged, and HWJ =1 indicates that the switch is in the closed position. The TWJ is connected in parallel with a closing loop, and a normally closed auxiliary contact of a breaker is connected in series in front of a closing coil of the switch in the loop. When the switch is in the off position, the normally closed auxiliary contact is closed, the TWJ coil is electrified, and TWJ =1 indicates that the switch is off. When the switch is in the open position, the closing coil is electrified. The TWJ is a voltage coil, the resistance of the coil is larger, and the overall resistance value is about 20-40K (a positive terminal of measurement control and a negative terminal of the TWJ) by adding a resistor connected in series on a loop. Although the whole closing loop is conducted, the voltage of the control loop is mostly applied to the TWJ, the partial resistance of the TWJ is large, and the current is small, so that the closing coil cannot act. The series resistor on the TWJ coil is also used for preventing the TWJ coil from breaking down and being short-circuited to cause misoperation of the closing coil.
The time delay closing control circuit theory of operation that this embodiment provided: when the remote control is carried out, a remote closing loop is conducted through a positive power supply, a 3-4 contact of a remote control/near control change-over switch 1ZK, a 1-2 contact of a 1CLP2 pressing plate, a remote closing relay YHJ-1 in an operation box, an anti-tripping relay normally closed contact TBJV1-2, a closing holding relay coil HBJ, a 14-15 contact of a time delay relay 1SJ, a CZ (CZ) 4-CZ 14 contact formed by a certain delay normally open contact and a breaker normally closed contact and a closing coil, so that remote control delay closing of the breaker is realized; when in-situ control is carried out, an in-situ closing loop is closed through a positive power supply, a positive contact and a negative contact of a 1WFS five-prevention lockset, a 1-2 contact of a remote control/near control change-over switch 1ZK, an anti-tripping normally closed relay contact TBJV1-2, a closing holding relay coil HBJ and a 14-15 contact of a time delay relay 1SJ through a certain delay normally open contact, and a CZ:4-CZ:14 contact formed by a breaker normally closed contact and a closing coil is conducted, so that the in-situ control delay closing of the circuit breaker is realized.
The utility model provides a control circuit can realize jumping the position and keep watch on, close the position and keep watch on, combined floodgate pilot lamp instruction warning etc. can prevent effectively that the operating personnel from closing a floodgate to the condenser that does not fully discharge, effectively protects operating personnel and equipment safety.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (6)
1. An automatic time-delay switching-on control loop of a capacitor high-voltage switch cabinet is characterized by comprising a switching-on and switching-off change-over switch 1KK, a remote local change-over switch 1ZK, a remote switching-on control loop, a local switching-on control loop, a remote switching-off control loop, a local switching-off control loop and a time-delay relay starting loop, wherein the remote switching-on and switching-off control loop, the local switching-on and switching-off control loop, the remote switching;
the remote closing control loop comprises a positive power supply, a 3-4 contact of a remote control/near control change-over switch 1ZK, a 1-2 contact of a 1CLP2 pressing plate, a remote closing relay normally-open contact YHJ-1 in an operation box, an anti-tripping relay normally-closed contact TBJV1-2, a closing holding relay coil HBJ, a 14-15 contact of a time delay relay 1SJ, a CZ (CZ) 4-CZ 14 contact consisting of a breaker normally-closed contact and a closing coil and a negative power supply;
the local closing control loop comprises a positive power supply, a positive contact and a negative contact of a 1WFS five-prevention lockset, a 1-2 contact of a remote control/near control change-over switch 1ZK, a 1-2 contact of an opening/closing change-over switch 1KK, an anti-tripping relay normally closed contact TBJV1-2, a closing holding relay coil HBJ, a 14-15 contact of a time delay relay 1SJ, a CZ (CZ) 4-CZ 14 contact consisting of a breaker normally closed contact and a closing coil and a negative power supply;
the remote opening control loop comprises a positive power supply, a 3-4 contact of a remote control/near control change-over switch 1ZK, a 1-2 contact of a 1CLP2 pressing plate, a remote tripping relay normally open contact YTJ-1 in an operation box, a tripping holding relay coil TBJ, a CZ (CZ: 31-CZ:30 contact consisting of a breaker normally open contact and a tripping coil, and a negative power supply;
the local brake-separating control loop comprises a positive power supply, a positive contact and a negative contact of a 1WFS five-prevention lockset, a 1-2 contact of a remote control/near control change-over switch 1ZK, a 3-4 contact of a switch-off/switch-on change-over switch 1KK, a trip holding relay coil TBJ, a CZ (CZ: 31-CZ:30 contact and a negative power supply, wherein the CZ:31-CZ:30 contact consists of a normally open contact of a breaker and a trip coil;
the time delay relay starting loop comprises a positive power supply, a breaker sub-position auxiliary contact DL, a time relay 1SJ coil and a negative electricity loop.
2. The automatic time-delay switching-on control circuit of the capacitor high-voltage switch cabinet according to claim 1, further comprising a signal indicator light, wherein the signal indicator light comprises a red light and a green light, and the red light is connected with the normally open contact HWJ of the on-position relay through a resistor and is connected in parallel to the on-site switching-on control circuit; the green light is connected with a normally open contact TWJ of the jump relay through a resistor and is connected in parallel with the local brake-separating control loop, when the breaker is in a closed position, a brake-closing position relay coil HWJ is electrified, the normally open contact of the HWJ relay is closed, and the red light is on; when the circuit breaker is in a separated position, a coil TWJ of the relay at the tripping position is electrified, a normally open contact of the TWJ relay is closed, and a green light is on.
3. The automatic time-delay closing control circuit of the capacitor high-voltage switch cabinet according to claim 1, 3-4 contact points of a remote control/near control change-over switch 1ZK in the remote closing control loop are respectively connected with a positive power supply and a contact point of a pressing plate 1 of a 1CLP2, the 1CLP2 press plate 2 contact is connected with the remote-closing relay normally open contact YHJ-1 in the operation box, the operating box in the switching-on relay normally open contact YHJ-1 through triode and jump-proof relay normally closed contact TBJV1-2, closing hold relay coil HBJ is connected, the other end of closing hold relay coil HBJ is connected with 14 contacts of time delay relay 1SJ, 15 contacts of time delay relay 1SJ and CZ that breaker normally closed contact and closing coil are constituteed: 4, connection of contacts, normally closed contact of the circuit breaker and CZ formed by a closing coil: the 14 contact is connected to a negative power supply.
4. The automatic time-delay switching-on control loop of the capacitor high-voltage switch cabinet according to claim 1, wherein positive and negative contacts of a 1WFS five-prevention lock in the on-site switching-on control loop are respectively connected with 1-2 contacts of a positive power supply and a remote control/near control change-over switch 1ZK, 1-2 contact of the remote control/near control change-over switch 1ZK is connected with 1-2 contact of a switching-on/off change-over switch 1KK, 1-2 contact of the switching-on/off change-over switch 1KK is connected with a tripping-prevention relay normally closed contact TBJV1-2, a tripping-prevention relay normally closed contact TBJV1-2 is connected with a switching-on holding relay coil HBJ, the switching-on holding relay coil HBJ is connected with 14-15 contact of a time-delay relay 1SJ, 14-15 contact of the time-delay relay 1SJ is connected with a 4-CZ:14 contact composed of a normally closed contact and a switching, the CZ:4-CZ:14 contact composed of the breaker normally closed contact and the closing coil is connected with a negative power supply.
5. The automatic time-delay closing control loop of the capacitor high-voltage switch cabinet as claimed in claim 1, wherein 3-4 contacts of a remote control/near control change-over switch 1ZK in the remote opening control loop are respectively connected with a positive power supply and a 1CLP2 pressing plate 1 contact, a 1CLP2 pressing plate 2 contact is connected with a remote tripping relay normally open contact YTJ-1 in an operation box, the remote tripping relay normally open contact YTJ-1 in the operation box is connected with a tripping holding relay coil TBJ through a triode, the other end of the tripping holding relay coil TBJ is connected with a CZ:31 contact consisting of a breaker normally open contact and a tripping coil, and a CZ:30 contact consisting of the breaker normally open contact and the tripping coil is connected with a negative power supply.
6. The automatic time-delay closing control loop of the capacitor high-voltage switch cabinet as claimed in claim 1, wherein positive and negative contacts of a 1WFS five-prevention lockset in the local opening control loop are respectively connected with a positive power supply and 1-2 contacts of a remote control/near control change-over switch 1ZK, 1-2 contacts of the remote control/near control change-over switch 1ZK are connected with 3-4 contacts of the opening/closing change-over switch 1KK, 3-4 contacts of the opening/closing change-over switch 1KK are connected with a trip holding relay coil TBJ, the trip holding relay coil TBJ is connected with a CZ:31-CZ:30 contact consisting of a normally open contact of a circuit breaker and a trip coil, and the CZ:31-CZ:30 contact consisting of the normally open contact of the circuit breaker and the trip coil is connected with a negative power supply.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113160491A (en) * | 2021-04-07 | 2021-07-23 | 威胜电气有限公司 | Primary and secondary integration high-voltage charge control switching-on and switching-off control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113160491A (en) * | 2021-04-07 | 2021-07-23 | 威胜电气有限公司 | Primary and secondary integration high-voltage charge control switching-on and switching-off control method |
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