TWI709989B - Earthquake-resistant high-voltage circuit breaker system without power supply - Google Patents

Abstract

The present invention relates to an earthquake-resistant high-voltage circuit breaker system without power supply. The main structure includes a metal frame, a first wire wound on one side of the metal frame and arranged in parallel on a high-voltage power system, and a first wire wound on the metal frame. A second wire on the other side of the piece, a magnetic rod arranged on one side of the metal frame piece and wound by the second wire, and a circuit breaker arranged on one side of the magnetic rod and connected in series with the high-voltage power system . With the above structure, a high-voltage circuit breaker without internal contacts is constructed. The first wire detects the current of the high-voltage power system, and at the same time uses the amplified current generated on the second wire to generate an induced magnetic field on the magnetic rod, causing it to move The trigger starts the circuit breaker, and because the amplified current is used to greatly increase the response speed, the purpose of power supply-free, high shock resistance, and fast response speed is achieved.

Description

Earthquake-resistant high-voltage circuit breaker system without power supply

The present invention is to provide a power supply-free earthquake-resistant high-voltage circuit breaker system, especially a power supply-free earthquake-resistant high-voltage circuit breaker system with no internal circuit contacts, no external power supply, good vibration resistance, excellent response speed, and the like.

According to the point of view, in the power distribution system, high-voltage circuit breakers are very important equipment, so in theory, the safety requirements of high-voltage circuit breakers are very high, but according to practical statistics, the failure of high-voltage circuit breakers is no longer a case. One of the common problems is that the working power supply of the trip circuit in the high-voltage circuit breaker system fails. When the working power supply required for the trip circuit fails, the system is activated due to lack of electrical energy, so that the trip mechanism cannot be activated to isolate high-voltage accidents. The consequences are quite serious, and the resulting economic losses or compensation issues are difficult to estimate. In addition to power failure, the cause of working power failure is often due to contact oxidation on the power circuit, insufficient battery voltage, contact disconnection due to shock, and poor contact.

Even if power failure is not considered, if the high-voltage circuit breaker fails to trip immediately in the event of a short-circuit accident on the receiving side as expected, not only will the high-voltage circuit breaker be damaged, it may also extend to the main power supply line and affect the supply of power to other receiving parties. Actions, which in turn caused chain industry losses. And because the transmission speed of electricity is second only to the speed of light (300,000 km/s), although there are different speeds on different media, there are also 110,000 kilometers per second on common copper wires, so even if the power supply action only delays 0 ‧01 seconds, in the world of electricity, it is enough to let the fault current flow out of the power supply system. Therefore, the response time of the high-voltage circuit breaker is not instant enough, and serious problems will also occur.

Therefore, when the above-mentioned high-voltage circuit breaker is in use, the following problems and deficiencies need to be improved:

First, the circuit breaker system cannot solve the problem of requiring an external power supply to operate. Once a power failure occurs, the circuit breaker system cannot function.

Second, the power circuits of high-voltage circuit breakers all have contacts that are electrically connected to the outside, and cannot resist the problems of contact breakage and contact oxidation caused by vibration (such as earthquake).

Third, the high-voltage circuit breaker is driven by electricity, so it is easy to cause signal delay due to unstable rated voltage, which exceeds the 20ms response time of the high-voltage circuit breaker specification.

Therefore, how to solve the above-mentioned conventional problems and deficiencies is the direction that the creators of the present invention and related manufacturers engaged in this industry urgently want to study and improve.

Therefore, in view of the above-mentioned deficiencies, the creator of the present invention collected relevant information, evaluated and considered from many parties, and based on years of experience in this industry, through continuous trials and modifications, he designed this kind of contact without internal circuits. , No need for external power supply, and has the characteristics of good earthquake resistance, excellent response speed and other characteristics of the invention patent of a power supply-free earthquake-resistant high-voltage circuit breaker system.

The main purpose of the present invention is: it can be directly mounted on one side of the high-voltage power system without external power supply, and has an inductive mechanical structure without circuit contacts inside itself, which can improve the overall seismic performance and use the principle of electromagnetic induction and current The magnetic effect and the law of cold times can amplify the current to improve the response speed and action sensitivity of the circuit breaker.

To achieve the above object, the present invention is a high-voltage circuit breaker, which mainly includes: a metal frame member, one side of the metal frame member is wound with a first wire, and the first wire is arranged in parallel on a high-voltage power system to The fault current of the high-voltage power system is introduced, and a second wire is wound on the other side of the metal frame. The number of turns of the first wire is greater than the number of turns of the second wire to convert the fault current into an amplified A magnetic rod wound by the second wire is provided on one side of the metal frame member, an induced magnetic field is generated on the magnetic rod through the amplified current, and a magnetic rod is provided on one side of the magnetic rod. A disconnecting device connected in series in a high-voltage power system, the magnetic rod system is displaced by the induced magnetic field to trigger the activation of the disconnecting device.

Use the parallel connection of the first wire and the high-voltage power system to detect the fault current of the high-voltage power system. When the fault current occurs, it passes through the first and second wires wound on both sides of the metal frame, according to the principle of electromagnetic induction The amplified current corresponding to the fault current is generated, and one side of the second wire is wound on the magnetic rod. Therefore, it can generate an induced magnetic field on the magnetic rod through the amplified current according to the current magnetic effect, so that the magnetic rod can be The law shifts, and triggers the start of the circuit breaker, which in turn causes the high-voltage power system to form a circuit break to avoid the continued flow of fault current. In this way, the induced current and magnetic field are used to accelerate the reaction and drive the circuit breaker, and at the same time solve the problem that external power supply is required to operate and the power contacts are not shock resistant.

With the above-mentioned technology, it is possible to overcome the problems of conventional high-voltage circuit breakers that require external power supply, have many power contact-derived conditions, and response delays, and achieve the practical progress of the above advantages.

100‧‧‧High voltage circuit breaker

1, 1a‧‧‧Box

11a‧‧‧Damping element

2‧‧‧Metal frame

3‧‧‧First wire

4‧‧‧Second wire

41‧‧‧Amplified current

5‧‧‧Magnetic rod

51‧‧‧Induction magnetic field

52‧‧‧Elastic element

6‧‧‧Circuit Breaker

61‧‧‧Conductive sheet

611‧‧‧Series wire

62‧‧‧Control Parts

621‧‧‧Return

7‧‧‧High voltage power system

71‧‧‧Fault current

The first figure is a perspective view of a preferred embodiment of the present invention.

The second figure is the use state diagram of the preferred embodiment of the present invention.

The third figure is a schematic diagram of the circuit of the preferred embodiment of the present invention.

The fourth figure is a schematic diagram of the operation of the preferred embodiment of the present invention.

The fifth figure is a block flow diagram of the operation of the preferred embodiment of the present invention.

Figure 6 is a perspective view of another preferred embodiment of the present invention.

In order to achieve the above-mentioned purposes and effects, the technical means and structure adopted by the present invention are illustrated in detail below to illustrate the characteristics and functions of the preferred embodiments of the present invention for a complete understanding.

Please refer to Figures 1 to 5, which are a three-dimensional perspective view to an action block flow chart of a preferred embodiment of the present invention. It can be clearly seen from the figures that the present invention is a high-voltage circuit breaker 100, which mainly includes :

A box body 1 for accommodating the high-voltage circuit breaker 100;

A metal frame 2;

A first wire 3 wound on one side of the metal frame member 2 is arranged in parallel on a high-voltage power system 7 to introduce the fault current 71 of the high-voltage power system 7, and the voltage value of the high-voltage power system 7 is greater than 600 volts ；

A second wire 4 wound on the other side of the metal frame member 2, the number of winding turns of the first wire 3 is greater than the number of winding turns of the second wire 4, so as to convert the fault current 7 into an amplified current 41;

A magnetic rod 5 arranged on one side of the metal frame member 2 and wound by the second wire 4, and generates an induced magnetic field 51 on the magnetic rod 5 through the amplified current 41;

An elastic element 52 connected to one side of the magnetic rod 5 is used to increase the magnetic The resistance when the sex rod body 5 is displaced; and

A circuit breaker 6 arranged on one side of the magnetic rod 5 and connected in series with the high-voltage power system 7. The magnetic rod 5 is displaced by the induced magnetic field 51 to trigger and activate the circuit breaker 6, and the circuit breaker 6 is There are two conductive sheets 61;

A control element 62 provided on one side of the circuit breaker 6 for conducting the two conductive sheets 61 is linked by the magnetic rod 5 to disconnect the two conductive sheets 61, and the control element 62 has a protrusion on one side The return piece 621 outside the box body 1.

Through the above description, we can understand the structure of this technology, and based on the corresponding cooperation of this structure, it provides a design without internal circuit contacts and no external power supply, and has the advantages of good shock resistance and excellent response speed. The detailed explanation will be explained below.

When in use, the high-voltage circuit breaker 100 can be selectively arranged in a box body 1, and only the wires for connecting with the high-voltage power system 7 are exposed, which simplifies the installation of the high-voltage circuit breaker 100 of the present invention in the high-voltage power system 7 action. Among them, the first wire 3 is connected in parallel with the high-voltage power system 7. Since there is no other impedance on the first wire 3, current can be guided to flow to the first wire 3 to detect the fault current 71 of the high-voltage power system 7. When the fault current 71 occurs, because the first wire 3 is wound around the metal frame member 2, the first wire 3 has the effect of a solenoid, and the fault current 71 generates a directional magnetic field on the metal frame member 2, and The metal frame member 2 is a closed loop, so the change of the magnetic momentum of the metal frame member 2 at the second wire 4 will generate an induced current on the second wire 4. The magnitude of the induced current is the same as that of the first and second wires 3. , 4 is related to the turns ratio of the coil, and the present invention is designed so that the winding of the first wire 3 is 10 to 100 times the winding turns of the second wire 4 (in this embodiment, 50 turns to 1 turn). The current value of the induced current is 10 to 100 times of the fault current 71 (50 times in this embodiment) and is called the amplified current 41. The above is the reverse operation of the current transformer (CT), which can be implemented according to Explanation of the principle of electromagnetic induction.

In addition, the two ends of the second wire 4 are wound on the magnetic rod 5 to form a closed loop. Therefore, the induced magnetic field 51 can be generated on the magnetic rod 5 through the amplified current 41 according to the current magnetic effect. According to the calculation formula of the current magnetic effect, the magnetic field strength is positively correlated with the current value, and the second wire 4 is wound on the solenoid shape of the magnetic rod 5, which will also strengthen the intensity of the induced magnetic field 51 (the induced magnetic field 51 The direction is as the dotted arrow on the side of the magnetic rod 5 in the fourth figure). Furthermore, according to the law of cold order and the law of conservation of energy, in order to resist the force of the induced magnetic field 51, the magnetic rod 5 causes the magnetic rod 5 to move in the opposite direction to the direction of the induced magnetic field 51 (the displacement of the magnetic rod 5 Direction, as shown in the solid arrow on the side of the magnetic rod 5 in the fourth figure), and the displacement of the magnetic rod 5 triggers the opening of the circuit breaker 6, thereby breaking the high-voltage power system 7 to prevent the fault current 71 from continuing to flow. In this way, the current and magnetic field are both generated by induction to realize the concept of no contact inside the high-voltage circuit breaker 100. Because of this contactless design, it can solve the problem of power contacts that are not shock resistant and use amplification The principle of the electric current 41 and the solenoid enhances the speed and sensitivity of the reaction action of the magnetic rod 5.

The circuit breaker 6 has another set of series conductors 611 that the high-voltage circuit breaker 100 must connect to the outside for series connection with the high-voltage power system 7. The series conductors 611 have two and respectively conduct the two conductive pieces 61, and the circuit breaker When 6 acts, the high-voltage power system 7 is broken. In this embodiment, the circuit breaker 6 utilizes two conductive sheets 61 exposed on the surface and a control member 62 linked by the magnetic rod 5. In general, the control member 62 abuts the two conductive sheets 61 at the same time. In order to maintain the conduction state between the circuit breaker 6 and the high-voltage power system 7, when the magnetic rod body 5 is displaced by force, the control member 62 is separated from the conductive sheet 61, causing the two conductive sheets 61 to lose the conduction path, and the high-voltage power system is disconnected. The purpose of 7. A reset piece 621 may be provided on one side of the control member 62 for the user to reverse the reset member 621 when the abnormality processing is completed, so that the control member 62 conducts the two conductive sheets 61 again to resume normal operation.

In addition, in order to avoid the normal current of the high-voltage power system 7, the amplified current 41 generated after the first wire 3, the metal frame member 2 and the second wire 4 drives the magnetic rod body 5, and accidentally touches the circuit breaker 6. An elastic element 52 is added to one side of the body 5. The elastic element 52 is a tension spring and makes the direction of contraction and elastic force of the elastic element 52 opposite to the predetermined displacement direction of the magnetic rod 5. In this way, the user can adjust the The electric power system 7 is defined as the current value of the fault current 71, and an elastic element 52 with an appropriate contraction elastic force is selected to control the action timing of the magnetic rod body 5. For example, if the normal current value is 1A and the fault current 71 value is 50A, the corresponding amplified current 41 generated by the present invention is 50A and 2500A. At this time, the selected elastic element 52 must be able to withstand the amplified current 41 of 2500A. The magnetic field strength of the induced magnetic field 51 generated, in other words, only when the amplified current 41 is greater than or equal to 2500A, the magnetic field strength received by the magnetic rod body 51 can overcome the elastic force of the elastic element 52 to generate displacement and trigger the circuit breaker 6.

Please also refer to the sixth figure, which is a perspective view of another preferred embodiment of the present invention. It can be clearly seen from the figure that this embodiment is similar to the above-mentioned embodiment, except that the box 1a has A plurality of damping elements 11a, in this embodiment, the damping element 11a is a damping shock absorber, The system includes the effects of spring and damping at the same time. The spring is used to resist external force and provide rebound. The damping is used to control the flow rate and flow of the suspension oil. Therefore, a damping element 11a is provided on the box 1a to strengthen the external The cushioning effect in vibration force (such as earthquake, or collision).

However, the above descriptions are only preferred embodiments of the present invention, and are not limited to the scope of the present invention. Therefore, all simple modifications and equivalent structural changes made by using the description and drawings of the present invention should be the same. It is included in the scope of the patent of the present invention, and it is hereby stated.

In summary, the power supply-free seismic high-voltage circuit breaker system of the present invention can indeed achieve its effects and purposes when used. Therefore, the present invention is an invention with excellent practicability. It meets the requirements of an invention patent application. If you submit an application, I hope the review committee will approve the invention as soon as possible to protect the creator’s hard work. If the review committee has any doubts, please feel free to write instructions. The creator will do our best to cooperate.

100‧‧‧High voltage circuit breaker

1‧‧‧Box

2‧‧‧Metal frame

3‧‧‧First wire

4‧‧‧Second wire

5‧‧‧Magnetic rod

52‧‧‧Elastic element

6‧‧‧Circuit Breaker

61‧‧‧Conductive sheet

611‧‧‧Series wire

62‧‧‧Control Parts

621‧‧‧Return

Claims (9)

An earthquake-resistant high-voltage circuit breaker system without power supply is a high-voltage circuit breaker, which mainly includes: a metal frame; A first wire wound on one side of the metal frame member is arranged in parallel on a high-voltage power system to guide the fault current of the high-voltage power system; A second wire wound on the other side of the metal frame member, the number of winding turns of the first wire is greater than the number of winding turns of the second wire, so as to convert the fault current into an amplified current; A magnetic rod arranged on one side of the metal frame member and wound by the second wire, and generating an induced magnetic field on the magnetic rod through the amplified current; and A circuit breaker arranged on one side of the magnetic rod body and connected in series with the high-voltage power system. The magnetic rod system is displaced by the induced magnetic field to trigger and activate the circuit breaker. As described in the first item of the scope of patent application, the power supply-free seismic high-voltage circuit breaker system, wherein an elastic element is connected to one side of the magnetic rod body to increase the resistance when the magnetic rod body is displaced. As described in item 1 of the scope of patent application, the power supply-free seismic high-voltage circuit breaker system, wherein the high-voltage circuit breaker is arranged in a box. As described in item 3 of the scope of patent application, the power supply-free seismic high-voltage circuit breaker system, wherein the box body has a plurality of damping elements. As described in item 3 of the scope of patent application, the power supply-free shock-resistant high-voltage circuit breaker system, wherein the circuit breaker has two conductive sheets. The power supply-free seismic high-voltage circuit breaker system described in item 5 of the scope of patent application, wherein one side of the circuit breaker device has a control element for conducting the two conductive pieces, which is linked by the magnetic rod body to disconnect the two conductive pieces . As described in item 6 of the scope of patent application, the vibration-resistant high-voltage circuit breaker system without power supply, wherein one side of the control member has a reset member protruding outside the box. As described in item 1 of the scope of patent application, the power supply-free seismic high-voltage circuit breaker system, wherein the voltage value of the high-voltage power system is greater than 600 volts. As described in item 1 of the scope of patent application, the power supply-free seismic high-voltage circuit breaker system, wherein the number of winding turns of the first wire is 10 to 100 times the number of winding turns of the second wire.

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