CN209894928U - Device for simulating 10kV high-voltage vacuum permanent magnet circuit breaker - Google Patents

Abstract

The utility model relates to the technical field of inspection of relay protection devices, which is a device for simulating a 10kV high-voltage vacuum permanent magnet circuit breaker. A switch circuit and a switch for switching between a remote control opening and closing circuit and a manual control opening and closing circuit, the operation panel is fixedly installed on the front of the box, and the remote control opening and closing circuit includes a single-pole double-throw switch, The first current limiting resistor, the second current limiting resistor and the relay, the input end of the switch is electrically connected with a remote control box with a voltage level of 110V pulse signal or a remote control box with a voltage level of 220V pulse signal. The utility model has a reasonable and compact structure, and the remote control opening and closing circuit or the manual control opening and closing circuit can be selectively connected through the switching of the double-pole double-throw switch; Remote control box for two voltage classes.

Description

Device for simulating 10kV high voltage vacuum permanent magnet circuit breaker

technical field

The utility model relates to the technical field of inspection of relay protection devices, which is a device for simulating a 10kV high-voltage vacuum permanent magnet circuit breaker.

Background technique

At present, before the matching control box of the 10kV high-voltage vacuum permanent magnet circuit breaker is installed on the column, tests such as relay protection debugging and on-site operation should be carried out to confirm that it can effectively protect the safe operation of the line after it is installed on site. effect. There are many manufacturers and models of 10kV high-voltage vacuum permanent magnet circuit breakers in the domestic market. Because the circuit breaker bodies of different manufacturers and the aviation cable interface of the control box are different, it is difficult for the equipment of different manufacturers to be fully compatible. Such problems generally need to be matched with the circuit breaker body of the matching model when the new equipment is centrally debugged. The circuit breaker body is large in size, heavy in weight, and inconvenient to handle.

When debugging the protection function or troubleshooting of the control box installed on the column, it can only be tested after the line is powered off, which will directly affect the power supply quality of the user, which is contrary to the goal of the State Grid to promote high-quality power supply. Therefore, we need to use other methods to debug or troubleshoot the protection function of the control box under the condition of ensuring that the line is not powered off. In the past, a common method was to transport a circuit breaker body of the same model to the site and use an aviation cable to connect the control box to work. However, due to the heavy body of the 10kV high-voltage vacuum permanent magnet circuit breaker, sufficient personnel and special vehicles are required to carry it back and forth, which directly increases the on-site operation cost and reduces the operation efficiency.

SUMMARY OF THE INVENTION

The utility model provides a device for simulating a 10kV high-voltage vacuum permanent magnet circuit breaker, which overcomes the deficiencies of the above-mentioned prior art, and can effectively solve the problem that the existing 10kV high-voltage vacuum permanent magnet circuit breaker is heavy in weight and inconvenient to handle. The problem of low work efficiency.

The technical scheme of the utility model is realized by the following measures: a device for simulating a 10kV high-voltage vacuum permanent magnet circuit breaker, comprising a box body 1, an operation panel 2 and a remote control opening and closing circuit arranged in the box body 1, The manual control opening and closing circuit and the switch for switching the remote control opening and closing circuit and the manual control opening and closing circuit, the operation panel 2 is fixedly installed on the front of the box 1, and the remote control opening and closing circuit It includes a SPDT switch KK1, a first current limiting resistor R1, a second current limiting resistor R2 and a relay RL. The input end of the switch is electrically connected to a remote control box with a voltage level of 110V pulse signal or a remote control box with a voltage level of 220V pulse signal. The control box, the first output end of the switch is connected with the input end of the SPDT switch KK1, the second output end of the switch is connected with the input end of the manual control opening and closing circuit, the first output end of the SPDT switch KK1 The terminal is connected in series with one end of the first current limiting resistor R1, the second output end of the SPDT switch KK1 is connected in series with one end of the second current limiting resistor R2, the other end of the first current limiting resistor R1 and the other end of the second current limiting resistor R2 are both Connected with the relay RL coil, the relay RL normally closed contact is used to indicate the closing signal, and the relay normally open contact is used to indicate the opening signal.

The following are further optimizations or/and improvements to the above-mentioned technical solutions of the utility model:

The above-mentioned operation panel is provided with a three-phase secondary voltage input terminal, a three-phase secondary current input terminal, and a three-phase secondary voltage cable interface. The three-phase secondary voltage input terminal and the three-phase secondary current input terminal. And the three-phase secondary voltage cable interface is the transfer interface.

The above-mentioned switch is a double-pole double-throw switch, and the manual control opening and closing circuit is composed of a double-pole double-throw switch, a closing button, an opening button and a relay, and the first output contact of the double-pole double-throw switch passes through. The closing button is connected to the first end of the relay coil, the second output contact of the double-pole double-throw switch is connected to the second end of the relay coil through the opening button, and the third output contact of the double-pole double-throw switch is connected to the second end of the relay coil. The fourth output contact of the double-pole double-throw switch is connected with the first end of the relay coil.

The above operation panel is also provided with a closing indicator light and an opening indicator light, the opening indicator light is connected with the normally open contact of the relay, and the closing indicator light is connected with the normally closed contact of the relay.

The closing indicator light is a light-emitting diode that emits red light, and the opening indicator light is a light-emitting diode that emits green light.

The utility model has a reasonable and compact structure and is easy to use. The remote control opening and closing circuit or the manual control opening and closing circuit can be selectively connected through the switching of the double-pole double-throw switch; The resistance matches the remote control box of two voltage levels of 110V pulse signal and 220V pulse signal. When the double-pole double-throw switch is switched to the remote control opening and closing control circuit, when the relay protection tester outputs three-phase secondary voltage, three-phase secondary current and zero sequence current, the remote control box will display the primary or secondary current in real time. secondary value. After the remote control box is put into the corresponding fixed value, after the relay protection tester loads the current greater than the fixed value, the remote control box protects the outlet and trips the magnetic latching relay of the device; point, from the closing position to the dividing position, the red closing indicator light is off, and the green opening indicator light is on. When the double-pole double-throw switch is switched to the manual control opening and closing circuit, manually press the opening button on the operation panel, the magnetic latching relay changes from closing to opening, the red indicator light for closing is off, and the opening is opened. The green indicator light is on; on the contrary, the magnetic latching relay changes from the position to the closing position, the green opening indicator light is off, and the red closing indicator light is on.

Description of drawings

Accompanying drawing 1 is the structure schematic diagram of the preferred embodiment of the utility model.

FIG. 2 is a schematic structural diagram of the operation panel of the present invention.

Figure 3 is a block diagram of the opening and closing control circuit of the utility model.

4 is a circuit diagram of the remote control opening and closing circuit of the present invention.

5 is a circuit diagram of the manual control opening and closing circuit of the present invention.

The codes in the accompanying drawings are respectively: 1 is the box body, 2 is the operation panel, Ua, Ub, Uc, Un are respectively the three-phase secondary voltage terminals, Ia, Ib, Ic, In are respectively the three-phase secondary current wiring Column, Io is the zero-sequence current terminal, com is the common terminal terminal, F is the opening signal terminal, H is the closing signal terminal, KK1 is the single-pole double-throw switch, ZK1 is the double-pole double-throw switch, and S1 is the The closing button, S2 is the opening button, D1 is the closing indicator light, D2 is the opening indicator light, Q1 is the charging switch, R1 is the first current limiting resistor, R2 is the second current limiting resistor, and RL is the relay.

Detailed ways

The present invention is not limited by the following examples, and specific implementations can be determined according to the technical solutions and actual conditions of the present invention.

In the present utility model, for the convenience of description, the description of the relative positional relationship of each component is described according to the layout of Figure 1 of the specification, such as: the positions of front, rear, upper, lower, left, right, etc. The relationship is determined according to the layout direction of the drawings in the specification.

Below in conjunction with embodiment and accompanying drawing, the utility model is further described:

As shown in Figures 1, 2, 3, and 4, the device for simulating a 10kV high-voltage vacuum permanent magnet circuit breaker includes a box body 1, an operation panel 2, a remote control opening and closing circuit, a manual control circuit breaker, and a The closing circuit and the switch for switching between the remote control opening and closing circuit and the manual control opening and closing circuit, the operation panel 2 is fixedly installed on the front of the box 1, and the remote control opening and closing circuit includes a single pole double Throw switch KK1, first current limiting resistor R1, second current limiting resistor R2 and relay RL, the input end of the switch is electrically connected to a remote control box with a voltage level of 110V pulse signal or a remote control box with a voltage level of 220V pulse signal, The first output end of the switch is connected with the input end of the SPDT switch KK1, the second output end of the switch is connected with the input end of the manual control opening and closing circuit, the first output end of the SPDT switch KK1 is connected with the first output end of the switch KK1. One end of a current limiting resistor R1 is connected in series, the second output end of the SPDT switch KK1 is connected in series with one end of the second current limiting resistor R2, the other end of the first current limiting resistor R1 and the other end of the second current limiting resistor R2 are both connected to the relay RL Coil connection, the relay RL normally closed contact is used to indicate the closing signal, and the relay normally open contact is used to indicate the opening signal.

According to needs, the SPDT switch KK1 can also be arranged on the operation panel 2, which is convenient for the staff to operate. The SPDT switch KK1 is used to switch the voltage level of the remote control opening and closing circuit. When the SPDT switch KK1 is switched to 110V, the utility model can only be connected to a remote control box with a voltage level of 110V. The remote control opening and closing circuit provides 110V pulse signal; on the contrary, SPDT switch KK1 is connected to the 220V remote control box, which provides 220V pulse signal to the remote control opening and closing circuit.

The relay of the present invention can adopt a 12V magnetic latching relay. The operation panel 2 of the present invention is provided with a closing signal terminal H and an opening signal terminal F, and a closing signal terminal H and an opening signal terminal. F is connected with the auxiliary contacts (normally open contact and normally closed contact) of the magnetic latching relay respectively through the aviation cable, and the signal after the opening and closing execution is fed back to the remote control box. The magnetic latching relay can also maintain the opening and closing action state in a passive way, which can directly avoid signal relay and reduce the effective action time of the relay.

According to the needs of the utility model, a power supply charging module can be set up, and an external AC 220V power supply interface can be configured, and the utility model can be supplied with power and the battery can be charged through the DC 24V power supply charging module; when the external AC 220V power supply is disconnected, the lead can be automatically switched. The function of the battery keeps the power supply to the utility model continuously.

According to actual needs, the above-mentioned device for simulating 10kV high-voltage vacuum permanent magnet circuit breaker can be further optimized or/and improved:

As shown in the accompanying drawings 1 and 2, the operation panel 2 is provided with a three-phase secondary voltage input terminal, a three-phase secondary current input terminal, and a three-phase secondary voltage cable interface J. The three-phase secondary voltage input wiring The column, the three-phase secondary current input terminal and the three-phase secondary voltage cable interface J are all transfer interfaces.

According to the needs of the actual test, the operation panel 2 in front of the box of the present invention can be provided with a charging switch Q1, three-phase secondary current terminals (Ia, Ib, Ic, In), three-phase secondary voltage terminals (Ua , Ub, Uc, Un), zero sequence current terminal Io, common terminal terminal com, opening signal terminal F and closing signal terminal H, etc. The box body 1 of the present utility model is set as an openable and closable box body 1, and an operation panel 2 is arranged in the front of the box body 1. After the box body 1 is opened, the relay protection tester and the remote control box are electrically connected through the cable interface respectively. The three-phase secondary current terminal (Ia, Ib, Ic, In), the three-phase secondary voltage terminal (Ua, Ub, Uc, Un) and the zero-sequence current terminal Io of the relay protection tester are respectively the same as those of the utility model. The new three-phase secondary current terminals (Ia, Ib, Ic, In), three-phase secondary voltage terminals (Ua, Ub, Uc, Un), zero-sequence current terminals, etc. are connected by wires. Secondary voltage terminal, three-phase secondary current terminal: used to connect the relay protection tester, and input the three-phase secondary voltage and three-phase secondary current output by the relay protection tester after being switched by the utility model. To the remote control box, test the correctness of each related component in the remote control box. The three-phase secondary voltage cable interface of the utility model is used for connecting the utility model with the three-phase secondary voltage cable interface of the remote control box.

As shown in Figures 1, 2, 3, and 5, the switch is a double-pole double-throw switch ZK1, and the manually controlled opening and closing circuit consists of a double-pole double-throw switch ZK1, a closing button S1, and an opening button S2 and relay RL are formed. The first output contact of the double pole double throw switch ZK1 is connected to the first end of the relay RL coil through the closing button S1, and the second output contact of the double pole double throw switch ZK1 is connected with the opening button S2. The second end of the relay RL coil is connected, the third output contact of the double pole double throw switch ZK1 is connected to the second end of the relay RL coil, and the fourth output contact of the double pole double throw switch ZK1 is connected to the first end of the relay RL coil.

The first output contact and the third output contact of the double-pole double-throw switch ZK1 of the present utility model are linked together to form a closing circuit after being connected with the relay, and the second output contact and the fourth output contact are linked together and are connected with the relay Constitute an opening circuit. The utility model can choose to connect the pulse signal of the remote control box or choose to connect the manual opening button and closing button through the switching of the double-pole double-throw switch ZK1, so as to realize the remote automatic control of the opening and closing circuit or the manual control of the remote control box. Opening and closing circuit; adopt the method of switching the single-pole double-throw switch KK1 to select the remote control box with the corresponding resistance matching the voltage level of 110V pulse signal or the remote control box with the voltage level of 220V pulse signal.

According to the needs of actual work, the closing button S1, the opening button S2 and the double-pole double-throw switch ZK1 can be set on the operation panel 2, which is convenient for the staff to operate.

As shown in Figures 1, 2, 4, and 5, the operation panel 2 is also provided with a closing indicator light D1 and an opening indicator light D2, the opening indicator light D2 is connected to the normally open contact of the relay RL, and the closing indicator light D1 is connected to the normally closed contact of the relay RL.

When the double-pole double-throw switch is switched to the remote control opening and closing control circuit, when the relay protection tester outputs three-phase secondary voltage, three-phase secondary current and zero sequence current, the remote control box will display the primary or secondary current in real time. secondary value. After the remote control box is put into the corresponding fixed value, after the relay protection tester loads the current greater than the fixed value, the remote control box protects the outlet and trips the magnetic latching relay RL of the device; the magnetic latching relay RL gets the opening signal When the action switches the contact, it changes from the closing position to the opening position, the closing indicator D1 is off, and the opening indicator D2 is on. When the double-pole double-throw switch ZK1 is switched to the manual control opening and closing circuit, manually press the opening button S2 on the operation panel 2, the magnetic latching relay RL changes from the closing position to the opening position, and the closing indicator light D1 off, the opening indicator light D2 is on; on the contrary, the magnetic latching relay RL changes from the partial position to the closing position, the opening indicator light D2 is off, and the closing indicator light D1 is on.

As shown in Figures 4 and 5, the closing indicator light D1 is a light-emitting diode that emits red light, and the opening indicator light D2 is a light-emitting diode that emits green light.

The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect, and can increase or decrease unnecessary technical features according to actual needs to meet the needs of different situations.

Claims (7)

1. A device for simulating a 10kV high-voltage vacuum permanent-magnet circuit breaker is characterized by comprising a box body, an operation panel, a remote control opening and closing loop, a manual control opening and closing loop and a change-over switch, wherein the remote control opening and closing loop and the manual control opening and closing loop are arranged in the box body, the operation panel is fixedly arranged on the front face of the box body, the remote control opening and closing loop comprises a single-pole double-throw switch, a first current-limiting resistor, a second current-limiting resistor and a relay, the input end of the change-over switch is electrically connected with a remote control box of a 110V pulse signal or a remote control box of a 220V pulse signal, the first output end of the change-over switch is connected with the input end of the single-pole double-throw switch, the second output end of the change-over switch is connected with the input end of the manual control opening and closing loop, and the first output end of the single-pole double, the second output end of the single-pole double-throw switch is connected with one end of a second current-limiting resistor in series, the other end of the first current-limiting resistor and the other end of the second current-limiting resistor are both connected with a relay coil, a normally closed contact of a relay RL is used for indicating a closing signal, and a normally open contact of the relay is used for indicating a switching-off signal.

2. The apparatus of claim 1, wherein the operation panel is provided with a three-phase secondary voltage input terminal, a three-phase secondary current input terminal, and a three-phase secondary voltage cable interface, and the three-phase secondary voltage input terminal, the three-phase secondary current input terminal, and the three-phase secondary voltage cable interface are all switching interfaces.

3. The apparatus of claim 1 or 2, wherein the switch is a double-pole double-throw switch, the manual control switch-on/off circuit comprises a double-pole double-throw switch, a switch-on button, a switch-off button and a relay, a first output contact of the double-pole double-throw switch is connected with a first end of the relay coil through the switch-on button, a second output contact of the double-pole double-throw switch is connected with a second end of the relay coil through the switch-off button, a third output contact of the double-pole double-throw switch is connected with the second end of the relay coil, and a fourth output contact of the double-pole double-throw switch is connected with the first end of the relay coil.

4. The device for simulating the 10kV high-voltage vacuum permanent magnet circuit breaker according to claim 1 or 2, wherein the operation panel is further provided with a closing indicator lamp and a separating indicator lamp, the separating indicator lamp is connected with the normally open contact of the relay, and the closing indicator lamp is connected with the normally closed contact of the relay.

5. The device for simulating the 10kV high-voltage vacuum permanent magnet circuit breaker according to claim 3, wherein the operation panel is further provided with a closing indicator lamp and a separating indicator lamp, the separating indicator lamp is connected with the normally open contact of the relay, and the closing indicator lamp is connected with the normally closed contact of the relay.

6. The apparatus of claim 4, wherein the switch-on indicator light is a light emitting diode emitting red light, and the switch-off indicator light is a light emitting diode emitting green light.

7. The apparatus of claim 5, wherein the closing indicator is a light emitting diode emitting red light and the opening indicator is a light emitting diode emitting green light.

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