CN215641683U - Circuit breaker anti-tripping function testing device - Google Patents
Circuit breaker anti-tripping function testing device Download PDFInfo
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- CN215641683U CN215641683U CN202120518212.4U CN202120518212U CN215641683U CN 215641683 U CN215641683 U CN 215641683U CN 202120518212 U CN202120518212 U CN 202120518212U CN 215641683 U CN215641683 U CN 215641683U
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Abstract
A circuit breaker anti-tripping function testing device comprises: a fourth terminal (B4) is led out from the negative end of the power supply branch, and the first relay branch is connected with the power supply branch in parallel; the second relay branch is connected with the first relay branch in parallel; the first test branch and the second test branch are connected in series, a second terminal is led out from a common point of the first test branch and the second test branch, and the first test branch and the second test branch are connected with a closing control end; the first test branch comprises a first contact of a first time relay and a first contact of a second time relay which are connected in series; a first terminal is led out from the other end of the first test branch and is connected with the positive end of the control loop of the circuit breaker to be tested; the second test branch comprises a first time relay second contact and a second time relay second contact which are connected in series; and a third terminal is led out from the other end of the second test branch and is connected with the opening control end. The utility model can realize the synchronous connection and disconnection of the opening and closing loops of the circuit breaker, accurately control the testing time and avoid damaging the circuit breaker.
Description
Technical Field
The utility model belongs to the technical field of power equipment, and particularly relates to an anti-tripping function testing device which is applicable to the field of switch-on and switch-off control of circuit breakers of 110kV or more.
Background
The high-voltage circuit breaker is used for cutting off or closing load current or short-circuit current in a high-voltage circuit, is important equipment in a power transmission network of electric power, and once a fault occurs, serious accidents such as influence on power transmission, failure in timely removal and the like can be caused.
If the circuit breaker receives closing and opening commands at the same time, the circuit breaker can be switched between the closing state, the opening state, the closing state and the opening state continuously in a short time, namely, the state of the circuit breaker jumps, so that the circuit breaker breaks down, and the safe and stable operation of a power grid is damaged. In order to prevent the above situation, the circuit breakers of 110kV and above are all provided with anti-jumping loops (anti-jumping for short), and the main function is to cut off the closing loops in time when the circuit breakers receive closing and opening commands at the same time, so that the circuit breakers are kept in an off state, and the circuit breakers are prevented from being damaged.
The anti-tripping function has very important significance for ensuring the normal work of the circuit breaker, in order to verify the reliability of an anti-tripping loop, when a new test acceptance work or a regular test of the circuit breaker is carried out, the anti-tripping function test of the circuit breaker must be carried out, and the investigation finds that when the anti-tripping function test of the circuit breaker is carried out currently, the circuit breaker is mainly separated and closed by two persons at the same time and is carried out in a manual mode, and the following problems exist in the traditional mode, namely 1) the separation and closing of the circuit breaker are generally about 30ms, the requirement on the matching time is high, and the success rate of the test is low; 2) if the anti-tripping loop of the circuit breaker has problems, the circuit breaker can be divided and combined for many times in a short time, and the circuit breaker can be damaged; 3) if the circuit breaker opens and closes a circuit and has a problem, the test duration is difficult to control in a manual mode, and the opening and closing coils can be burnt.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model aims to provide a novel circuit breaker anti-tripping function testing device, which is used for solving the problems that the circuit breaker anti-tripping function testing is matched and the time is uncontrollable in the prior art.
The utility model adopts the following technical scheme.
A circuit breaker anti-tripping function testing device comprises: the shell sets up power branch road, first relay branch road, second relay branch road, first experimental branch road and the experimental branch road of second in the shell inside, and the fourth terminal is drawn forth to the negative pole end of power branch road, and first relay branch road and power branch road parallel connection include: a first time relay; the second relay branch is parallelly connected with first relay branch, includes: a second time relay; the first test branch circuit is connected with the second test branch circuit in series, a second terminal is led out from a common point of the first test branch circuit and the second test branch circuit, and the first test branch circuit is connected with a switching-on control end of a control loop of the circuit breaker to be tested; the first test branch comprises a first contact of a first time relay and a first contact of a second time relay which are connected in series; a first terminal is led out from the other end of the first test branch and is connected with the positive end of the control loop of the circuit breaker to be tested; the second test branch comprises a first time relay second contact and a second time relay second contact which are connected in series; and a third terminal is led out from the other end of the second test branch and is connected with the opening control end of the control loop of the circuit breaker to be tested.
Preferably, the first test branch comprises: first emitting diode is used as the output pilot lamp that sets up at the shell, and first relay branch road, second relay branch road include respectively: and the second light-emitting diode and the third light-emitting diode are used as indicator lights arranged on the shell.
Preferably, the first relay branch and the second relay branch respectively include: the circuit comprises a first resistor and a second resistor, wherein the first resistor is connected with a first time relay in series, and the second resistor is connected with a second time relay in series.
Preferably, the first relay branch and the second relay branch respectively include: the inching switch is used as a test switch arranged on the shell; the power branch includes: and a switch used as a power switch arranged on the panel.
Preferably, the power branch comprises: and the input end of the AC/DC converter is connected with an AC input interface arranged on the shell, and the output end of the AC/DC converter is connected with the battery.
Preferably, the AC/DC converter is connected with a voltage regulating knob arranged on the shell and an output voltage value display screen.
Preferably, the first time relay and the second time relay are respectively connected with a time adjusting key arranged on the shell.
Preferably, the AC input interface is an aircraft outlet, connected to a 220VAC power supply.
Compared with the prior art, the tripping test device has the advantages that when the tripping test of the circuit breaker is carried out, the tripping test device can realize the synchronous connection and disconnection of the opening and closing loops of the circuit breaker, accurately control the test duration, avoid the damage to the circuit breaker, reduce the test difficulty, reduce the test personnel, shorten the test time, and have good economic benefit and social benefit.
Drawings
Fig. 1 is a schematic structural diagram of a circuit breaker anti-tripping function testing device according to an embodiment of the present application;
fig. 2 is an appearance structure diagram of a circuit breaker anti-tripping function testing device according to an embodiment of the application;
fig. 3 is a schematic circuit diagram of a circuit breaker anti-tripping function testing device according to an embodiment of the application;
1-an AC input interface;
2-a power switch;
3-an output terminal;
4-an indicator light;
5-output indicator light;
6-test switch;
7-pressure regulating knob;
8-a display screen;
9-a ground terminal;
10-time adjustment button.
Detailed Description
The present application is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present application is not limited thereby.
The utility model provides a brand-new anti-tripping function testing device for a circuit breaker. The structure principle is shown in fig. 1, the appearance structure is shown in fig. 2, and the circuit principle is shown in fig. 3.
A circuit breaker anti-tripping function testing device comprises: the shell sets up power branch road, first relay branch road, second relay branch road, first experimental branch road and the experimental branch road of second in the shell inside.
First relay branch road and power branch road parallel connection include: a first time relay K1; the second relay branch is parallelly connected with first relay branch, includes: a second time relay K2. It can be understood that the first relay branch and the second relay branch form a control unit for the anti-tripping function testing device of the circuit breaker, and are used for controlling the on and off of the output unit and accurately controlling the on and off time of the output unit by adjusting the test time t1 and t 2.
In a preferred but non-limiting embodiment, the first time relay K1 and the second time relay K2 are connected to a time adjustment button 10 provided in the housing and to the display screen 8, respectively, for displaying the on and off times of the control unit.
First relay branch road, second relay branch road include respectively: the relay comprises a first resistor R1 and a second resistor R2, wherein the first resistor R1 is connected with a first time relay K1 in series, and the second resistor R2 is connected with a second time relay K2 in series. It will be appreciated by those skilled in the art that the first resistor R1 and the second resistor R2 are used mainly for voltage sharing, current limiting and burnout prevention, and a preferred but non-limiting embodiment is that the first resistor R1 and the second resistor R2 have the same resistance.
First relay branch road, second relay branch road include respectively: a click switch S2 serving as a test switch 6 provided in the housing; the jog switch S2 synchronously turns on or off the first relay branch and the second relay branch.
The first test branch and the second test branch are connected in series, a second terminal B2 is led out from a common point of the first test branch and the second test branch, and the first test branch and the second test branch are connected with a closing control end of a control loop of the circuit breaker to be tested.
The first test branch comprises a first time relay first contact K1 connected in series: 1 and first contact K2 of the second time relay: 1; and a first terminal B1 is led out from the other end of the first test branch and is connected with the positive end of the control loop of the circuit breaker to be tested.
The second test branch comprises a first time relay second contact K1 connected in series: 2 and second time relay second contact K2: 2; and a third terminal B3 is led out from the other end of the second test branch and is connected with the opening control end of the control loop of the circuit breaker to be tested.
The first test branch comprises: and a first light emitting diode E1 serving as an output indicator lamp 5 disposed on the housing, the first relay branch and the second relay branch respectively including: the second light emitting diode E2 and the third light emitting diode E3 serve as the indicator lamp 4 provided in the housing.
The power branch includes: the switch S1 is used as the power switch 2 provided on the panel. The negative end of the power branch leads to a fourth terminal B4. As will be understood by those skilled in the art, the first terminal B1, the second terminal B2, the third terminal B3 and the fourth terminal B4 together form the output terminal 3 on the housing, and the output unit as the anti-tripping function test device of the circuit breaker of the present invention is responsible for executing the commands of the control unit and controlling the on and off of the circuit breaker opening and closing circuit.
The power branch comprises: and an AC/DC converter, wherein the input end of the AC/DC converter is connected with an AC input interface 1 arranged on the shell, and the output end of the AC/DC converter is connected with the battery BT 1. The AC input interface 1 is an aircraft outlet and is connected to a 220VAC power supply.
The AC/DC converter is connected with a voltage regulating knob 7 and a display screen 8 which are arranged on the shell and used for displaying the voltage output value of the AC/DC converter. That is, the AC/DC converter is connected to 220V AC, and after being rectified, it can output DC power with adjustable voltage amplitude, which is responsible for supplying power to the control unit and the output unit. AC refers to alternating current, and DC refers to direct current.
It can be understood that the anti-trip function testing device for the circuit breaker further comprises: and the test wire is used for connecting the test device with the circuit breaker control loop. The housing is also provided with a ground terminal 9.
In order to more clearly describe the structural principle of the anti-tripping function testing device of the circuit breaker, the operation mode is described as follows:
and switching on and off the high-voltage circuit breaker to control the power supply to be disconnected, and measuring a circuit breaker control loop to confirm no electricity. The grounding terminal of the anti-jump function testing device is grounded according to requirements, the tester is connected to a power supply, a power switch is turned on, and the output voltage value of the tester is adjusted to the control voltage value of the circuit breaker, which is generally 110V or 220V. Referring to a drawing, test terminals B1, B2, B3 and B4 of a tester are respectively connected to a positive terminal, a closing control terminal, an opening control terminal and a negative terminal of a circuit breaker control loop. The time adjustment button is used to set the on-time t1 and the off-time t2, the time t1 is preferably set to be about 10ms, and the time t2 is preferably set to be about 500 ms. The test switch is pressed and the output indicator lamp 5 is confirmed to be lit. The test results were checked. And (5) closing the test switch after the test is finished. And adjusting the output voltage value of the tester to the minimum value. And (5) shutting down.
The present applicant has described and illustrated embodiments of the present invention in detail with reference to the accompanying drawings, but it should be understood by those skilled in the art that the above embodiments are merely preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not for limiting the scope of the present invention, and on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the scope of the present invention.
Claims (8)
1. A circuit breaker anti-tripping function testing device comprises: a shell, a power supply branch, a first relay branch, a second relay branch, a first test branch and a second test branch which are arranged in the shell,
the negative terminal of the power branch leads to a fourth terminal (B4),
first relay branch road and power branch road parallel connection include: a first time relay (K1);
the second relay branch is parallelly connected with first relay branch, includes: a second time relay (K2);
the first test branch circuit is connected with the second test branch circuit in series, a second terminal is led out from a common point of the first test branch circuit and the second test branch circuit, and the first test branch circuit is connected with a switching-on control end of a control loop of the circuit breaker to be tested;
the first test branch comprises a first contact of a first time relay and a first contact of a second time relay which are connected in series; a first terminal is led out from the other end of the first test branch and is connected with the positive end of the control loop of the circuit breaker to be tested;
the second test branch comprises a first time relay second contact and a second time relay second contact which are connected in series; and a third terminal is led out from the other end of the second test branch and is connected with the opening control end of the control loop of the circuit breaker to be tested.
2. The anti-jump function testing device of the circuit breaker according to claim 1, wherein:
the first test branch comprises: a first light emitting diode (E1) serving as an output indicator lamp (5) provided in the housing,
first relay branch road, second relay branch road include respectively: and the second light-emitting diode (E2) and the third light-emitting diode (E3) are used as indicator lights (4) arranged on the shell.
3. The anti-jump function testing device of the circuit breaker according to claim 1, wherein:
first relay branch road, second relay branch road include respectively: the relay comprises a first resistor (R1) and a second resistor (R2), wherein the first resistor (R1) is connected with a first time relay (K1) in series, and the second resistor (R2) is connected with a second time relay (K2) in series.
4. The circuit breaker trip prevention function test apparatus as recited in any one of claims 1 to 3, wherein:
first relay branch road, second relay branch road include respectively: a jog switch (S2) serving as a test switch (6) provided in the housing;
the power branch includes: and a switch (S1) serving as a power switch (2) provided on the panel.
5. The circuit breaker trip prevention function test apparatus as recited in any one of claims 1 to 3, wherein:
the power branch comprises: and the input end of the AC/DC converter is connected with an AC input interface (1) arranged on the shell, and the output end of the AC/DC converter is connected with the battery (BT 1).
6. The anti-jump function testing device of the circuit breaker according to claim 5, wherein:
the AC/DC converter is connected with a voltage regulating knob (7) arranged on the shell and an output voltage value display screen (8).
7. The anti-jump function testing device of the circuit breaker according to claim 1, wherein:
the first time relay (K1) and the second time relay (K2) are respectively connected with a time adjusting key arranged on the shell.
8. The anti-jump function testing device of the circuit breaker according to claim 5, wherein:
the AC input interface (1) is an aviation socket and is connected with a 220VAC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120518212.4U CN215641683U (en) | 2021-03-11 | 2021-03-11 | Circuit breaker anti-tripping function testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120518212.4U CN215641683U (en) | 2021-03-11 | 2021-03-11 | Circuit breaker anti-tripping function testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215641683U true CN215641683U (en) | 2022-01-25 |
Family
ID=79913233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120518212.4U Active CN215641683U (en) | 2021-03-11 | 2021-03-11 | Circuit breaker anti-tripping function testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215641683U (en) |
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2021
- 2021-03-11 CN CN202120518212.4U patent/CN215641683U/en active Active
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