阅读说明：本技术 便携式模拟断路器 (Portable analog circuit breaker ) 是由 曹冲 杨国涛 袁新喜 陈腾渊 罗东 陈孝菊 程先锐 杜余庆 韩涛 朱新元 丁倩 于 2021-07-19 设计创作，主要内容包括：本发明公开了一种便携式模拟断路器,包括壳体,壳体外设置有遥控公共端子J1、遥控分闸端子J2、遥控合闸端子J3、分位信号端子J4、遥信公共端子J5、合位信号端子J6、第一按钮SW1、第二按钮SW2、分闸提示灯L1、合闸提示灯L2、分位信号灯L3、合位信号灯L4,壳体内设有控制电源、分闸继电器K1、合闸继电器K2、分闸位置继电器K3、合闸位置继电器K4。本发明可实现不实际遥控分合一次运行设备的情况下,完成变电站遥控逻辑验证,避免了误遥控运行设备的风险；测试过程中,只拆除一根遥信公共端接入该模拟断路器,无需再拆接线模拟置位,拆接线次数只需一次,避免了恢复接线错误和错误短线的风险。(The invention discloses a portable analog circuit breaker which comprises a shell, wherein a remote control common terminal J1, a remote control opening terminal J2, a remote control closing terminal J3, an opening signal terminal J4, a remote signaling common terminal J5, an closing signal terminal J6, a first button SW1, a second button SW2, an opening prompt lamp L1, a closing prompt lamp L2, an opening signal lamp L3 and a closing signal lamp L4 are arranged outside the shell, and a control power supply, an opening relay K1, a closing relay K2, an opening position relay K3 and a closing position relay K4 are arranged in the shell. The invention can complete the remote control logic verification of the transformer substation under the condition that the on-off one-time operation equipment is not actually remotely controlled, thereby avoiding the risk of operating the equipment by mistake; in the test process, only one remote signaling public terminal is removed to be connected into the simulation circuit breaker, the disconnection simulation position is not needed, the disconnection times are only needed once, and the risks of recovering the wiring errors and wrong short lines are avoided.)

1. A portable analog circuit breaker comprises a shell and is characterized in that a remote control common terminal J1, a remote control opening terminal J2, a remote control closing terminal J3, an opening signal terminal J4, a remote signaling common terminal J5, an closing signal terminal J6, a first button SW1, a second button SW2, an opening prompt lamp L1, a closing prompt lamp L2, an opening signal lamp L3 and a closing signal lamp L4 are arranged outside the shell, and a control power supply, an opening relay K1, a closing relay K2, an opening position relay K3 and a closing position relay K4 are arranged in the shell;

the first button SW1 and the remote control opening terminal J2 are connected with an opening relay K1 in series, and the second button SW2 and the remote control closing terminal J3 are connected with a closing relay K2 in series; a normally open contact 5 of the opening relay K1 is connected with a remote control common terminal J1 and a first button SW1 in parallel, a normally open contact 7 of the opening relay K1 is connected with a contact 1 and a normally open contact 5 of the opening position relay K3 in parallel, and a normally closed contact 4 of the opening relay K1 is connected with a closing position relay K4 in series; a normally open contact 5 of the closing relay K2 is connected with a remote control common terminal J1 and a second button SW2 in parallel, a normally open contact 7 of the closing relay K2 is connected with a contact 1 and a normally open contact 6 of the closing position relay K4 in parallel, and a normally closed contact 4 of the closing relay K2 is connected with a separating position relay K3 in series; a normally open contact 7 of the opening position relay K3 is connected with a remote control common terminal J1 in parallel, a normally open contact 6 of the opening position relay K3 is connected with a remote communication common terminal J5, and a normally open contact 8 of the opening position relay K3 is connected with a position division signal terminal J4; the normally open contact 5 of the closing position relay K4 is connected with a remote signaling common terminal J5, the normally open contact 7 of the closing position relay K4 is connected with a joint signal terminal J6, and the normally open contact 8 of the closing position relay K4 is connected with a remote control common terminal J1 in parallel.

2. The portable analog circuit breaker of claim 1, further comprising a main switch SW disposed in the housing, wherein one end of the main switch SW is connected to a control power source, and the other end of the main switch SW is connected to a remote common terminal J1.

3. The portable analog circuit breaker according to claim 1 or 2, characterized in that the control power supply employs a +12V dc voltage.

4. The portable analog circuit breaker as claimed in claim 1, wherein the opening notification lamp L1 is connected in series with a resistor R1 and then connected in parallel with two ends of the opening relay K1, and a diode D5 is connected in parallel with two ends of the opening relay K1.

5. The portable analog circuit breaker as claimed in claim 1, wherein the closing signal lamp L2 is connected in series with a resistor R2 and then connected in parallel to two ends of a closing relay K2, and two ends of the closing relay K2 are connected in parallel with a diode D6.

6. The portable analog circuit breaker as claimed in claim 1, wherein the tap signal lamp L3 is connected in series with a resistor R3 and then connected in parallel with two ends of a tap position relay K3, and a diode D7 is connected in parallel with two ends of the tap position relay K3.

7. The portable analog circuit breaker of claim 1, wherein the on-position signal lamp L4 is connected in series with a resistor R4 and then connected in parallel with two ends of the on-position relay K4, and a diode D8 is connected in parallel with two ends of the on-position relay K4.

Technical Field

The invention relates to the technical field of simulation measurement and control of a transformer substation, in particular to a portable simulation circuit breaker.

Background

Along with the popularization of unattended substations, the requirement on scheduling automation is higher and higher, a scheduling end needs to realize the function of equipment in a remote control station, and in order to prevent the equipment from being operated by mistake and tripping the equipment, the large-area power failure of a power grid is caused, the correctness of the logic of a remote control function must be verified firstly. Therefore, an important acceptance link of the automation major of the substation equipment before commissioning is to perform remote control logic verification, such as remote control functions of a breaker, an isolation switch and a transformer gear. In order to prevent erroneous remote control of an interval or a device, remote control function verification must be performed.

The remote control test can directly carry out the remote control test of the circuit breaker and the isolating switch in a transformer substation which is not put into operation, but can not carry out the direct test in the transformer substation which is in operation, and particularly, the on-off primary equipment can not be actually operated when the transformer substation is comprehensively and automatically transformed or technically improved (a bus is electrified and a circuit is electrified). The existing testing method is that 1 person sends a remote control command at a background or a dispatching end, simultaneously 1 person is required to disconnect and carry out simulation setting, and 1 person uses a universal meter to measure the on-off gear, as shown in figure 1.

The problems with this test method are as follows:

(1) the safety risk is large: after each remote control displacement, the disconnecting short circuit is needed to be disconnected and reset, and the live wire is frequently disconnected and connected for many times, so that secondary mis-wiring and mis-remote control of other equipment are easily caused, and the safety risk is increased;

(2) consuming time and labor: the operation steps are multiple, so that the time consumption is long, 3 persons are required to operate simultaneously, and the success rate is not high.

It is therefore desirable to provide an apparatus that can replace a circuit breaker or isolation switch mechanism that cannot be physically switched on and off.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a portable simulation circuit breaker, which can complete the remote control logic verification of a transformer substation under the condition that the equipment is not actually operated in a switching-on/switching-off mode in a remote control mode, and avoid the risk of operating the equipment in a remote control mode.

In order to solve the technical problems, the invention adopts a technical scheme that: the portable analog circuit breaker comprises a shell, wherein a remote control common terminal J1, a remote control opening terminal J2, a remote control closing terminal J3, an opening signal terminal J4, a remote signaling common terminal J5, an closing signal terminal J6, a first button SW1, a second button SW2, an opening prompt lamp L1, a closing prompt lamp L2, an opening signal lamp L3 and an closing signal lamp L4 are arranged outside the shell, and a control power supply, an opening relay K1, a closing relay K2, an opening position relay K3 and a closing position relay K4 are arranged in the shell;

the first button SW1 and the remote control opening terminal J2 are connected with an opening relay K1 in series, and the second button SW2 and the remote control closing terminal J3 are connected with a closing relay K2 in series; a normally open contact 5 of the opening relay K1 is connected with a remote control common terminal J1 and a first button SW1 in parallel, a normally open contact 7 of the opening relay K1 is connected with a contact 1 and a normally open contact 5 of the opening position relay K3 in parallel, and a normally closed contact 4 of the opening relay K1 is connected with a closing position relay K4 in series; a normally open contact 5 of the closing relay K2 is connected with a remote control common terminal J1 and a second button SW2 in parallel, a normally open contact 7 of the closing relay K2 is connected with a contact 1 and a normally open contact 6 of the closing position relay K4 in parallel, and a normally closed contact 4 of the closing relay K2 is connected with a separating position relay K3 in series; a normally open contact 7 of the opening position relay K3 is connected with a remote control common terminal J1 in parallel, a normally open contact 6 of the opening position relay K3 is connected with a remote communication common terminal J5, and a normally open contact 8 of the opening position relay K3 is connected with a position division signal terminal J4; the normally open contact 5 of the closing position relay K4 is connected with a remote signaling common terminal J5, the normally open contact 7 of the closing position relay K4 is connected with a joint signal terminal J6, and the normally open contact 8 of the closing position relay K4 is connected with a remote control common terminal J1 in parallel.

In a preferred embodiment of the present invention, a main switch SW is further disposed in the housing, and one end of the main switch SW is connected to the control power supply, and the other end is connected to the remote control common terminal J1.

Further, the control power supply adopts +12V direct current voltage.

In a preferred embodiment of the present invention, the switching-off warning light L1 is connected in series with a resistor R1 and then connected in parallel to two ends of the switching-off relay K1, and two ends of the switching-off relay K1 are also connected in parallel with a diode D5.

In a preferred embodiment of the present invention, the closing warning light L2 is connected in series with a resistor R2 and then connected in parallel to two ends of the closing relay K2, and two ends of the closing relay K2 are also connected in parallel with a diode D6.

In a preferred embodiment of the present invention, the tap signal lamp L3 is connected in series with a resistor R3 and then connected in parallel to two ends of the switch position relay K3, and two ends of the switch position relay K3 are also connected in parallel with a diode D7.

In a preferred embodiment of the present invention, the on-position signal lamp L4 is connected in series with a resistor R4 and then connected in parallel to two ends of the on-position relay K4, and two ends of the on-position relay K4 are also connected in parallel with a diode D8.

The invention has the beneficial effects that:

(1) the invention can complete the remote control logic verification of the transformer substation under the condition that the on-off one-time operation equipment is not actually remotely controlled, thereby avoiding the risk of operating the equipment by mistake;

(2) in the testing process, only one remote signaling public terminal is removed to be connected into the simulation circuit breaker, and after a remote control command is issued, the remote signaling is automatically shifted and sent upwards, so that the wiring simulation position does not need to be removed again, the number of times of removing and connecting is only one, the risks of recovering wiring errors and wrong short wires are avoided, the operation of field personnel is not needed in the process, and the risk of working on a circuit with power is obviously reduced;

(3) the remote control testing work is carried out by applying the invention, and the remote control testing time of a single disconnecting link is reduced to 2.6min from 9.2 min;

(4) through field test, the remote control test work of the isolation switch is carried out by only 2 persons, namely 3 persons are reduced to 2 persons, and the production cost can be directly reduced;

(5) the portable simulation circuit breaker has small volume, light weight and convenient carrying, is particularly suitable for debugging work of a transformer substation field circuit breaker and an isolation switch, and can greatly improve the field operation production efficiency by using the instrument; meanwhile, the device can be used in the automatic professional remote control transmission of the transformer substation, can also be applied to the fields of relay protection professional switch transmission, scientific research institutions, laboratories and the like, and has extremely high popularization value.

Drawings

FIG. 1 is a flow chart of a prior art remote test method;

FIG. 2 is a front view of a preferred embodiment of the portable analog circuit breaker of the present invention;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a right side view of FIG. 2;

FIG. 5 is a circuit schematic of the portable analog circuit breaker;

fig. 6 is a connection diagram for use of the portable analog circuit breaker.

The parts in the drawings are numbered as follows: 1. a shell, 2 and a grounding wire.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.

Referring to fig. 2 to 4, an embodiment of the present invention includes:

a portable simulation circuit breaker comprises a shell 1, wherein one side surface of the shell 1 is provided with a remote control common terminal J1, a remote control opening terminal J2, a remote control closing terminal J3, an opening signal terminal J4, a remote signaling common terminal J5 and an closing signal terminal J6, and the other side surface of the shell 1 is provided with a grounding wire 2; the front of the shell 1 is provided with a first button SW1, a second button SW2, a switching-off prompting lamp L1, a switching-on prompting lamp L2, a switching-off signal lamp L3 and a switching-on signal lamp L4, a control power supply, a control circuit and a main switch SW are arranged in the shell 1, one end of the main switch SW is connected with the control power supply, and the other end of the main switch SW is connected with a remote control common terminal J1. Furthermore, the control power supply adopts +12V direct current voltage, and in practical application, the control power supply can adopt a rechargeable battery.

The control circuit mainly comprises an opening relay K1, a closing relay K2, an opening position relay K3 and a closing position relay K4. As shown in fig. 5, the first button SW1 and the remote control opening terminal J2 are connected in series with an opening relay K1, and the second button SW2 and the remote control closing terminal J3 are connected in series with a closing relay K2; a normally open contact 5 of the opening relay K1 is connected with a remote control common terminal J1 and a first button SW1 in parallel, a normally open contact 7 of the opening relay K1 is connected with a contact 1 and a normally open contact 5 of the opening position relay K3 in parallel, and a normally closed contact 4 of the opening relay K1 is connected with a closing position relay K4 in series; a normally open contact 5 of the closing relay K2 is connected with a remote control common terminal J1 and a second button SW2 in parallel, a normally open contact 7 of the closing relay K2 is connected with a contact 1 and a normally open contact 6 of the closing position relay K4 in parallel, and a normally closed contact 4 of the closing relay K2 is connected with a separating position relay K3 in series; a normally open contact 7 of the opening position relay K3 is connected with a remote control common terminal J1 in parallel, a normally open contact 6 of the opening position relay K3 is connected with a remote communication common terminal J5, and a normally open contact 8 of the opening position relay K3 is connected with a position division signal terminal J4; the normally open contact 5 of the closing position relay K4 is connected with a remote signaling common terminal J5, the normally open contact 7 of the closing position relay K4 is connected with a joint signal terminal J6, and the normally open contact 8 of the closing position relay K4 is connected with a remote control common terminal J1 in parallel.

In addition, the switching-off prompting lamp L1 is connected in series with a resistor R1 and then connected in parallel with two ends of the switching-off relay K1, and two ends of the switching-off relay K1 are also connected in parallel with a diode D5. The closing prompting lamp L2 is connected in series with a resistor R2 and then connected in parallel at two ends of a closing relay K2, and two ends of the closing relay K2 are also connected in parallel with a diode D6. The dividing position signal lamp L3 is connected in series with a resistor R3 and then connected in parallel with two ends of the opening position relay K3, and two ends of the opening position relay K3 are also connected in parallel with a diode D7. The on-position signal lamp L4 is connected in series with a resistor R4 and then connected in parallel with two ends of the on-position relay K4, and two ends of the on-position relay K4 are also connected in parallel with a diode D8. Diodes D5-D8 are used to prevent current surges to the relay.

The remote control output of the analog circuit breaker has three lines: remote control common port, remote divide, remote close, it has three lines to gather position signal: remote signaling common terminal, branch position and closing position. The auxiliary contact of the relay is used for realizing the remote control function and the output of the position signal. The working principle is as follows:

opening testing: and when a remote control opening command is given (namely the remote control common terminal J1 and the remote control opening terminal J2 are conducted) or the first button SW1 is pressed, the opening prompt lamp L1 is lightened. The opening relay K1 is attracted, the 5-7 normally open contacts of the K1 are closed, the 4-6 normally closed contacts are opened, then the opening position relay K3 is attracted, and the 5-7 normally open contacts of the K3 are closed. After the SW1 button is released, the opening position relay K3 is electrified continuously, and the 6-8 normally open contact of K3 is closed. Then, the extension signal terminal J4 is connected to the remote signaling common terminal J5, and the extension signal terminal J6 is disconnected from the remote signaling common terminal J5. At this time, the position-separating signal lamp L3 is normally on and sends a position-separating signal.

And (3) switching-on test: and a remote control closing command (namely the remote control common terminal J1 and the remote control closing terminal J3 are conducted) is given or the second button SW2 is pressed, and the closing prompting lamp L2 flashes. Closing a switch-on relay K2, opening a 4-6 normally closed contact of K2, powering off a switch-off relay K3, opening a 5-7 normally open contact of K3, and opening a 6-8 normally open contact of K3; meanwhile, the 3-7 normally open contact of the closing relay K2 is closed, so that the closing position relay K4 is attracted, and the 6-8 normally open contact of K4 is closed. After the remote control closing command is finished or the SW2 button is released, the closing position relay K4 is electrified continuously, and the 5-7 normally open contact of K4 is closed. Then, the extension signal terminal J4 is disconnected from the remote signaling common terminal J5, and the extension signal terminal J6 is connected to the remote signaling common terminal J5. At this time, the on-position signal lamp L4 is normally on and sends an on-position signal.

In actual use, as shown in fig. 6, the analog circuit breaker is connected to an outdoor terminal box to replace an actual on-site switching substation circuit breaker or an actual isolation disconnecting link mechanism. Because the binding post of terminal box is the banana socket, consequently the external binding post of simulation circuit breaker can select both ends to be the plug wire that the banana was inserted, and in order to be applicable to the demand of different on-the-spot wiring, still can be equipped with alligator clip and contact pin, inserts the terminal row more conveniently. In the testing process, the remote signaling common terminal in the outdoor terminal box is detached, the crocodile clip wire is accessed to the remote signaling common terminal of the simulation circuit breaker, and meanwhile, the separating signal terminal, the closing signal terminal, the remote control common terminal, the remote control closing terminal and the remote control opening terminal of the simulation circuit breaker are respectively inserted into the corresponding terminal row jacks of the outdoor terminal box, so that the connection of 6 wires is completed. When a remote control closing command is given, the remote control public terminal and the remote control closing terminal can be conducted, the simulation circuit breaker can conduct the remote signaling public terminal and the closing signal terminal, the remote signaling public terminal and the separating signal terminal are disconnected at the same time, and a closing signal is sent at the moment. When a remote control opening command is issued, the remote control common terminal and the remote control opening terminal can be conducted, the simulation circuit breaker can conduct the remote signaling common terminal and the opening signal terminal, the remote signaling common terminal is disconnected and the closing signal terminal is conducted, and then an opening signal can be sent at the moment.

In the testing process, only one telecommand public terminal is removed to be connected into the simulation circuit breaker, after a remote control command is issued, the telecommand is automatically shifted and sent upwards, so that a wiring simulation set does not need to be detached, the number of times of detaching and connecting only needs to be one, the risk of recovering wiring errors and wrong short wires is avoided, the operation of field personnel is not needed in the process, and the risk of working on a secondary circuit with a power supply is obviously reduced.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.