CN217362568U - Closing and separating loop of pole-mounted circuit breaker - Google Patents
Closing and separating loop of pole-mounted circuit breaker Download PDFInfo
- Publication number
- CN217362568U CN217362568U CN202221002259.6U CN202221002259U CN217362568U CN 217362568 U CN217362568 U CN 217362568U CN 202221002259 U CN202221002259 U CN 202221002259U CN 217362568 U CN217362568 U CN 217362568U
- Authority
- CN
- China
- Prior art keywords
- contact
- circuit
- coil
- aviation plug
- loop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004146 energy storage Methods 0.000 claims abstract description 35
- 238000012544 monitoring process Methods 0.000 claims abstract description 13
- 230000003287 optical effect Effects 0.000 claims description 16
- 230000009191 jumping Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model discloses a closing and opening loop of a pole-mounted circuit breaker, which comprises an energy storage loop, a closing loop monitoring loop and an opening loop; energy storage circuit includes travel switch S 'S a normally closed contact and energy storage motor M, the combined floodgate return circuit includes combined floodgate coil HQ, two auxiliary switch QF' S normally closed contact and travel switch S normally open contact, it includes opto-coupler VC, resistance R to close circle supervision circuit, the separating brake return circuit includes separating brake coil TQ and two auxiliary switch QF normally open contact, the utility model discloses have and close circle supervision circuit, can keep watch on whether combined floodgate coil HQ is normal to and prevent jumping the return circuit, when combined floodgate pulse signal does not cut off, can prevent to jump the combined floodgate repeatedly.
Description
Technical Field
The utility model relates to a high tension switchgear technical field specifically is a circuit breaker's on post closes branch circuit.
Background
The pole-mounted circuit breaker is one of important components in a power transmission and distribution system, is mainly used for distributing and combining load current, overload current and short-circuit current, the reliability of the action of the pole-mounted circuit breaker directly influences the operation safety of the power system, the accuracy of the protection action of the product of the pole-mounted circuit breaker and a relay protection manufacturer is continuously improved, and a loop-closing monitoring and anti-tripping loop is an important component for ensuring the action accuracy of the pole-mounted circuit breaker.
If external conditions of closing before the circuit breaker is closed and power is transmitted are not met, effective alarming and monitoring can not be carried out in advance, closing operation efficiency can be reduced, and users are influenced to transmit power on time.
The anti-jumping function can prevent the circuit breaker from jumping frequently and automatically to be switched on and off when a switching-on signal and a switching-off signal are continued after the circuit breaker is switched on and off. If the circuit breaker is repeatedly opened and closed, great impact can be caused to the product and the power system, and faults are caused.
Disclosure of Invention
The utility model provides a close branch circuit of circuit breaker on post to improve the accuracy of self product protection action.
The utility model discloses a realize like this: the switching-on/switching-off circuit of the pole-mounted circuit breaker comprises an energy storage circuit, a switching-on ring monitoring circuit and a switching-off circuit;
the energy storage loop comprises a normally closed contact of a travel switch S and an energy storage motor M, the normally closed contact of the travel switch S can control whether the energy storage motor M is powered on, and two ends of the energy storage loop are respectively connected to a negative electrode contact 1 and a positive electrode contact 2 of an aviation plug H;
the closing loop comprises a closing coil HQ, normally closed contacts of two auxiliary switches QF and normally open contacts of a travel switch S, the closing coil HQ is connected with the normally closed contacts of the two auxiliary switches QF and the normally open contacts of the travel switch S in series, the front end of the closing coil HQ is communicated with a negative contact 5 of the aviation plug H, and the rear end of the normally open contact of the travel switch S can be communicated to a positive contact 4 of the aviation plug H;
the loop closing monitoring circuit comprises an optocoupler VC and a resistor R, the right end of the energy storage circuit is respectively connected to one end of the optocoupler VC contact 4 and one end of the resistor R, the other end of the resistor R is connected to the optocoupler VC contact 1, the optocoupler VC contact 3 is connected to the aviation plug H negative electrode contact 3, the contact 2 of the optocoupler VC is connected to one end of a negative electrode closing coil HQ, and then the closing coil HQ is communicated with the aviation plug H negative electrode contact 5;
the brake separating loop comprises a brake separating coil TQ and two auxiliary switches QF normally open contacts, and the two ends of the brake separating coil TQ and the two auxiliary switches QF are connected in series and then are connected between a positive contact 6 and a negative contact 7 of the aviation plug H.
The anti-tripping device is characterized by further comprising an anti-tripping loop, wherein the anti-tripping loop comprises a normally open contact of a first anti-tripping relay KA1, a coil, a normally open contact and a normally closed contact of a second anti-tripping relay KA2, one end of the coil of the second anti-tripping relay KA2 is connected with the negative contact 5 of the aviation plug H, the other end of the coil of the second anti-tripping relay KA2 is connected with one end of the normally open contact of the second anti-tripping relay KA2, the other end of the normally open contact of the second anti-tripping relay KA2 is connected with the power positive end of the aviation plug contact 4, the normally open contact of the first anti-tripping relay KA1 is connected with the normally open contact of the second anti-tripping relay KA2 in parallel, and the normally closed contact of the second anti-tripping relay is arranged between the rear end of the normally open contact of a travel switch S in a closing loop and the aviation plug H contact 4;
the opening loop further comprises a coil of a first anti-tripping relay KA1, and the coil of the first anti-tripping relay KA1 is connected between the positive contact 6 and the negative contact 7 of the aviation plug H in parallel.
Energy storage circuit still includes rectifier bridge U, travel switch S ' S normally closed contact rear end is connected rectifier bridge U contact 2, rectifier bridge U contact 3 and contact 4 connect negative pole energy storage motor M, travel switch S normally closed contact ' S front end and negative pole rectifier bridge U ' S contact 1 insert respectively aviation plug H negative pole contact 1 and anodal contact 2.
The optical coupler VC and the resistor R are integrated on a PCB.
The resistance value of the resistor R is 10k omega.
The first anti-jump relay KA1 and the second anti-jump relay KA2 are voltage type relays.
The utility model has the advantages that:
1. the utility model has a loop-closing monitoring loop, which can monitor whether the HQ is normal;
2. the utility model discloses have and prevent jumping the return circuit, when combined floodgate pulse signal did not cut off, can prevent to jump the combined floodgate repeatedly.
Drawings
Fig. 1 is a schematic circuit structure diagram of a switching circuit of a pole-mounted circuit breaker according to the present invention;
fig. 2 is a schematic diagram of a composition structure of a switching circuit of a pole-mounted circuit breaker according to the present invention;
in the figure: 10. an energy storage loop; 20. a closed loop monitoring loop; 30. a closing loop; 40. an anti-bounce loop; 50. a brake separating loop.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Referring to fig. 1, the symbols and corresponding parts in the figure are as follows: h, aviation plug; s, a travel switch; u is a rectifier bridge; m is an energy storage motor; VC is an optical coupler; r is a resistor; QF, auxiliary switch; HQ is a closing coil; KA2 is a second anti-tripping relay; KA1 is a first anti-tripping relay; TQ, a brake separating coil.
Referring to fig. 1 and 2, the present embodiment provides a switching circuit of a pole mounted circuit breaker, including: the circuit comprises an energy storage circuit 10, a closing circuit 30, a closing coil monitoring circuit 20, an anti-tripping circuit 40 and an opening circuit 50.
The energy storage loop 10 comprises a normally closed contact of a travel switch S, a rectifier bridge U and an energy storage motor M, the rear end of the normally closed contact of the travel switch S is connected with a rectifier bridge U contact 2, a rectifier bridge U contact 3 and a contact 4 are connected with the energy storage motor M, an aviation plug H supplies power to the rectifier bridge U to charge and store energy for the energy storage motor M, and the normally closed contact of the travel switch S can control whether the energy storage motor M is powered on or not; the front end of a normally closed contact of a travel switch S and contacts 1 of a rectifier bridge U, namely two ends of an energy storage loop 10 are respectively connected with a negative electrode contact 1 and a positive electrode contact 2 of an aviation plug H, the aviation plug H is in butt joint with a control terminal, the control terminal provides power and on-off voltage signals, specifically, the contacts 1 to 3 and 5 of the aviation plug H are electrified signals in a normal state, and the contacts 4, 6 and 7 are controlled by the terminal and provide signals when switching-on or switching-off is needed.
The closing loop 30 comprises a closing coil HQ, two auxiliary switches QF normally closed contacts and a travel switch S normally open contact, the closing coil HQ is connected with the two auxiliary switches QF normally closed contacts and the travel switch S normally open contact in series, the front end of the closing coil HQ is communicated with a negative contact 5 of the aviation plug H, and the rear end of the travel switch S can be communicated to a positive contact 4 of the aviation plug H.
The loop-closing monitoring circuit 20 comprises an optical coupler VC and a resistor R, wherein the optical coupler VC and the resistor R are integrated on a PCB and are arranged in the case. The right end of the energy storage loop 10 is connected to an optocoupler VC contact 4 and one end of a resistor R respectively, the other end of the resistor R is connected to an optocoupler VC contact 1, an optocoupler VC contact 3 is connected to an aviation plug H negative electrode contact 3, a contact 2 of the optocoupler VC is connected to one end of a closing coil HQ, the closing coil HQ is connected with an aviation plug H negative electrode contact 5 in a switching mode, the optocoupler VC is connected with a switch closing coil HQ in series, and the resistance value of the switch closing coil is small, so that a voltage dividing resistor R of 10k omega is connected in series.
The separating brake loop 50 comprises a separating brake coil TQ, two auxiliary switches QF normally open contacts and a first anti-tripping relay KA1 coil, the normally open contacts of the separating brake coil TQ and the two auxiliary switches QF are connected in series and then are connected between the positive contact 6 and the negative contact 7 of the aviation plug H, and the first anti-tripping relay coil KA1 is connected between the positive contact 6 and the negative contact 7 of the aviation plug H in parallel.
The anti-jump loop 40 comprises a normally open contact of a first anti-jump relay KA1, a coil of a second anti-jump relay KA2, a normally open contact and a normally closed contact, one end of the coil of the second anti-jump relay KA2 is connected with the power negative end of the contact 5 of the aviation plug H, the other end of the coil of the second anti-jump relay KA2 is connected with one end of the normally open contact of the second anti-jump relay KA2, the other end of the normally open contact of the second anti-jump relay KA2 is connected with the anode contact 4 of the aviation plug, the normally open contact of the first anti-jump relay KA1 is connected with the normally open contact of the second anti-jump relay KA2 in parallel, and the normally closed contact of the second anti-jump relay is arranged between the rear end of the normally open contact of a travel switch S in the closing loop 30 and the anode contact 4 of the aviation plug H.
In the present embodiment, the first anti-bounce relay KA1 and the second anti-bounce relay KA2 are voltage type relays.
The utility model discloses the working process of implementing as follows: after the energy storage loop 10 is powered on, the energy storage motor M stores energy, and after the energy storage is in place, the position of the travel switch S is switched, the normally closed contact is opened, the normally open contact is closed, the energy storage loop 10 is disconnected, and the closing loop 30 is connected.
In the closed loop monitoring circuit 20, when the closing coil HQ is normal, positive electricity flows from the contact 2 of the aviation plug H through the resistor R, then flows into one end of the closing coil HQ from the opto-coupler VC contact 1 and the contact 2, and flows out to the power supply negative through the other end of the closing coil HQ, thereby forming a loop. At this moment, the optical coupler VC flows through current, the contact 4 of the optical coupler VC is conducted with the contact 3, the current of the positive electrical node can flow to the contact 3 to the aviation plug H negative electrode contact 3 through the optical coupler VC contact 4, the intelligent terminal is connected to the intelligent terminal, and then the loop closing monitoring is normal.
When the closing coil HQ is damaged, positive electricity flows into one end of the closing coil HQ from a contact 2 of the aviation plug H through the resistor R and then from a contact 1 of the optocoupler VC and a contact 2, and cannot flow out, so that a loop cannot be formed. At this moment, the optical coupler VC can not be conducted with the pin 3 of the contact because no current flows through the optical coupler VC, the current of the positive electrical node can not flow to the pin 3 of the contact 3 through the pin 4 of the VC contact of the optical coupler and then to the pin 3 of the H cathode of the aviation plug, and the intelligent terminal is opened and closed and is monitored abnormally.
In the anti-tripping loop 40, during normal on-off operation, after energy storage is completed, the control terminal provides a closing pulse signal, that is, the aviation plug contact 4 and the contact 5 are powered on, the closing coil HQ is powered on to operate, the circuit breaker is closed, the auxiliary switch QF is switched in position, the closing loop 30 is disconnected, the opening loop 50 is switched on, when the control terminal provides an opening pulse signal, that is, the aviation plug contact 4 and the contact 5 are powered off, the aviation plug contact 6 and the contact 7 are powered on, the opening coil TQ is powered on, the auxiliary switch QF is switched in position, the closing loop 30 is switched on, and the opening loop 50 is disconnected.
In an abnormal condition, after energy storage is completed, a control terminal provides a closing pulse signal, a closing coil HQ is powered on to act, a breaker is closed, an auxiliary switch QF is switched, a closing loop 30 is disconnected, an opening loop 50 is switched on, if the closing pulse signal exists all the time, namely, the aviation plug contact 4 and the contact 5 are not powered off, after the opening pulse signal is provided, the breaker is opened, the auxiliary switch QF returns to the state during closing, meanwhile, a first anti-tripping relay KA1 coil is powered on to act, KA1 normally-open contacts 3 and 5 are switched on, so that a second anti-tripping relay KA2 coil is powered on, a second anti-tripping relay KA2 normally-closed contact is opened, second anti-tripping relay KA normally-closed contacts 1 and 5 are disconnected, the closing loop 30 is cut off, second anti-tripping relay KA2 normally- open contacts 4 and 6 are switched on, and a self-holding loop is formed by the second anti-tripping relay KA2 coil. Even if the circuit breaker is used for storing energy, the travel switch S is switched, and the normally closed contacts 1 and 5 of the second anti-tripping relay KA2 are disconnected in the closing loop 30, so that repeated tripping and closing of the switch when the fault is not eliminated are prevented, and the tripping prevention function of relay protection is realized.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The switching-on/switching-off circuit of the pole-mounted circuit breaker is characterized by comprising an energy storage circuit (10), a switching-on circuit (30), a switching-on monitoring circuit (20) and a switching-off circuit (50);
the energy storage loop (10) comprises a normally closed contact of a travel switch S and an energy storage motor M, the normally closed contact of the travel switch S can control whether the energy storage motor M is powered on, and two ends of the energy storage loop (10) are respectively connected to an aviation plug H negative electrode contact 1 and an aviation plug H positive electrode contact 2;
the closing loop (30) comprises a closing coil HQ, two normally closed contacts of an auxiliary switch QF and a normally open contact of a travel switch S, the closing coil HQ is connected with the two normally closed contacts of the auxiliary switch QF and the normally open contact of the travel switch S in series, the front end of the closing coil HQ is communicated with a negative contact 5 of the aviation plug H, and the rear end of the normally open contact of the travel switch S can be communicated to a positive contact 4 of the aviation plug H;
the loop closing monitoring circuit (20) comprises an optical coupler VC and a resistor R, the right end of the energy storage circuit (10) is respectively connected to one end of the optical coupler VC contact 4 and one end of the resistor R, the other end of the resistor R is connected to the optical coupler VC contact 1, the optical coupler VC contact 3 is connected to the aviation plug H negative electrode contact 3, the contact 2 of the optical coupler VC is connected to one end of a negative electrode closing coil HQ, and then the closing coil HQ is communicated with the aviation plug H negative electrode contact 5;
the brake separating loop (50) comprises a brake separating coil TQ and two auxiliary switches QF normally open contacts, and the two ends of the brake separating coil TQ and the two auxiliary switches QF are connected in series and then connected between the positive contact 6 and the negative contact 7 of the aviation plug H.
2. The on-off circuit of the pole breaker according to claim 1, characterized by further comprising an anti-jump circuit (40), wherein the anti-jump circuit (40) comprises a normally open contact of a first anti-jump relay KA1, a coil, a normally open contact and a normally closed contact of a second anti-jump relay KA2, one end of the coil of the second anti-jump relay KA2 is connected with the negative contact 5 of the aviation plug H, the other end of the coil of the second anti-jump relay KA2 is connected with one end of the normally open contact of the second anti-jump relay KA2, the other end of the normally open contact of the second anti-jump relay KA2 is connected with the power positive end of the aviation plug contact 4, the normally open contact of the first anti-jump relay KA1 is connected with the normally open contact of the second anti-jump relay KA2 in parallel, and the normally closed contact of the second anti-jump relay is arranged between the rear end of the normally open contact of the travel switch S in the on-jump circuit (30) and the aviation plug H contact 4;
the opening circuit (50) further comprises a coil of a first anti-tripping relay KA1, wherein the coil KA1 of the first anti-tripping relay is connected between the positive contact 6 and the negative contact 7 of the aviation plug H in parallel.
3. The on-off circuit of the pole circuit breaker according to claim 1, wherein the energy storage circuit (10) further comprises a rectifier bridge U, the rear end of the normally closed contact of the travel switch S is connected to the rectifier bridge U contact 2, the rectifier bridge U contact 3 and the contact 4 are connected to the negative energy storage motor M, and the front end of the normally closed contact of the travel switch S and the contact 1 of the negative rectifier bridge U are respectively connected to the negative contact 1 and the positive contact 2 of the aviation plug H.
4. The pole break switching circuit according to claim 1, wherein said optical coupler VC and said resistor R are integrated on a PCB.
5. The pole break switching circuit according to claim 1, wherein the resistance R is 10k Ω.
6. The pole break switching circuit of claim 2, wherein said first anti-jump relay KA1 and said second anti-jump relay KA2 are voltage type relays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221002259.6U CN217362568U (en) | 2022-04-26 | 2022-04-26 | Closing and separating loop of pole-mounted circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221002259.6U CN217362568U (en) | 2022-04-26 | 2022-04-26 | Closing and separating loop of pole-mounted circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217362568U true CN217362568U (en) | 2022-09-02 |
Family
ID=83057979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221002259.6U Active CN217362568U (en) | 2022-04-26 | 2022-04-26 | Closing and separating loop of pole-mounted circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217362568U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116110753A (en) * | 2023-04-11 | 2023-05-12 | 宁波天安智能电网科技股份有限公司 | Adjustable breaker safety loop system |
-
2022
- 2022-04-26 CN CN202221002259.6U patent/CN217362568U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116110753A (en) * | 2023-04-11 | 2023-05-12 | 宁波天安智能电网科技股份有限公司 | Adjustable breaker safety loop system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111986939B (en) | Tripping and closing control system of circuit breaker and monitoring method thereof | |
| CN111756024B (en) | Circuit breaker control circuit | |
| CN217362568U (en) | Closing and separating loop of pole-mounted circuit breaker | |
| CN220066877U (en) | Tripping and closing protection circuit of circuit breaker | |
| CN114188971A (en) | Photovoltaic box-type substation | |
| CN208874279U (en) | A kind of improved breaker body unbalanced three-phase lines outlet loop | |
| CN217406169U (en) | Switch protection circuit, switch box and energy storage assembly | |
| CN100456593C (en) | Control circuit for intelligent breaker loop protection | |
| CN210536278U (en) | 'double-anti-jumping' protection circuit | |
| CN112086942B (en) | Anti-tripping loop and control method thereof | |
| CN212485807U (en) | Automatic time-delay switching-on control loop of capacitor high-voltage switch cabinet | |
| CN201219198Y (en) | Switch-on/off loop protection device of breaker | |
| CN203607351U (en) | A low-voltage circuit breaker automatic closing apparatus | |
| CN217607466U (en) | Anti-tripping control circuit of circuit breaker mechanism | |
| CN221328665U (en) | High-voltage distribution box for energy storage system | |
| CN110837240B (en) | Permanent magnet mechanism control circuit with energy storage monitoring function and control method | |
| CN110600338A (en) | Low-voltage intelligent charge control switch | |
| CN207853455U (en) | A kind of vacuum circuit breaker anti-jump loop | |
| CN216721270U (en) | Photovoltaic box-type substation | |
| CN113746068B (en) | Jumping-prevention control loop of three-phase linkage circuit breaker | |
| CN219576631U (en) | Power-losing energy storage module | |
| CN210780078U (en) | Power generation and supply network protection system | |
| CN220107565U (en) | Circuit for preventing circuit breaker control circuit disconnection false alarm | |
| CN215728643U (en) | Closing circuit monitoring device | |
| CN208400026U (en) | Equipment for power transmission and distribution divide-shut brake control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |