Driving method and device, equipment, control system and storage medium

Abstract

The embodiment of the invention provides a driving method, device and equipment, a control system and a storage medium, and relates to the technical field of rolling. The method comprises the steps that when a first working instruction is received, an isolation disconnecting link of a first isolation switch is controlled to be connected with a first contact of the first isolation switch, an isolation disconnecting link of a third isolation switch is controlled to be connected with a first contact of the third isolation switch, and an isolation disconnecting link of a second isolation switch is controlled to be connected with a second contact of the second isolation switch; when a second working instruction is received, an isolation disconnecting link of the first isolation switch is controlled to be conducted with a first contact of the first isolation switch, and an isolation disconnecting link of the third isolation switch is controlled to be conducted with a second contact of the third isolation switch; when a third working instruction is received, an isolation disconnecting link of the first isolation switch is controlled to be conducted with a second contact of the first isolation switch, an isolation disconnecting link of the second isolation switch is controlled to be conducted with a first contact of the second isolation switch, and an isolation disconnecting link of the third isolation switch is controlled to be conducted with a second contact of the third isolation switch; according to the embodiment of the invention, three finishing mills are driven by two frequency converters.

Description

Technical Field

[0001] This application relates to the technical field of rolling, and particularly to a driving method, device, equipment, control system, and storage medium. Background Art

[0002] A multi-rolling mill production line is a composite production line composed of multiple rolling mills in a steel rolling workshop. It can include multiple high-speed wire rod finishing mills, high-speed wire finishing mills, motors of each finishing mill, etc. This composite production line can carry out production simultaneously.

[0003] In the prior art, in a multi-rolling mill production line, each finishing mill is correspondingly configured with an inverter for driving production, which has the problem of high production line configuration cost. Summary of the Invention

[0004] This application provides a driving method, device, equipment, control system, and storage medium for solving the problem of high production line configuration cost in the prior art.

[0005] According to one aspect of this application, a driving method is provided, which is applied to a multi-rolling mill production line. The multi-rolling mill production line includes a first inverter, a second inverter, a first disconnecting switch, a second disconnecting switch, a third disconnecting switch, a first finishing mill, a second finishing mill, and a third finishing mill; the isolating switch of the first disconnecting switch is connected to the first inverter, one contact of the first disconnecting switch is connected to the motor of the first finishing mill, and the second contact of the first disconnecting switch is connected to one contact of the second disconnecting switch; the isolating switch of the second disconnecting switch is connected to the motor of the second finishing mill, and the second contact of the second disconnecting switch is connected to one contact of the third disconnecting switch; the isolating switch of the third disconnecting switch is connected to the second inverter, and the second contact of the third disconnecting switch is connected to the motor of the third finishing mill; the above method includes:

[0006] When receiving a first working instruction, control the isolating switch of the first disconnecting switch to conduct with one contact of the first disconnecting switch, the isolating switch of the third disconnecting switch to conduct with one contact of the third disconnecting switch, and the isolating switch of the second disconnecting switch to conduct with the second contact of the second disconnecting switch, so as to drive the motor of the first finishing mill based on the first inverter and drive the motor of the second finishing mill based on the second inverter; wherein, the first working instruction is used to indicate the start of the first finishing mill and the second finishing mill;

[0007] When receiving a second working instruction, control the isolating switch of the first disconnecting switch to conduct with one contact of the first disconnecting switch, the isolating switch of the third disconnecting switch to conduct with the second contact of the third disconnecting switch, so as to drive the motor of the first finishing mill based on the first inverter and drive the motor of the third finishing mill based on the second inverter; wherein, the second working instruction is used to indicate the start of the first finishing mill and the third finishing mill;

[0008] When receiving the third working instruction, control the isolation switch of the first disconnector to conduct with the two contacts of the first disconnector, the isolation switch of the second disconnector to conduct with the one contact of the second disconnector, and the isolation switch of the third disconnector to conduct with the two contacts of the third disconnector, so as to drive the motor of the second finishing mill based on the first frequency converter and drive the motor of the third finishing mill based on the second frequency converter; wherein, the third working instruction is used to indicate the start of the third finishing mill and the second finishing mill.

[0009] In a possible implementation manner, a first relay is configured inside the first frequency converter, and a second relay is configured inside the second frequency converter; the first relay is configured to activate the macro switching function of the first frequency converter, and the second relay is configured to activate the macro switching function of the second frequency converter, and the macro switching function is used to configure the configuration parameters of the first frequency converter or the second frequency converter.

[0010] In a possible implementation manner, the motor parameters of the first finishing mill are the first parameters, the motor parameters of the second finishing mill are the second parameters, and the motor parameters of the third finishing mill are the third parameters; the first parameter is equal to the third parameter, and the second parameter is different from the first parameter.

[0011] In yet another possible implementation manner, after receiving the first working instruction, the method further includes:

[0012] Based on the first relay, switch the configuration of the first frequency converter to the first configuration parameter, wherein the first configuration parameter is adapted to the first parameter;

[0013] Based on the second relay, switch the configuration of the second frequency converter to the second configuration parameter, wherein the second configuration parameter is adapted to the second parameter.

[0014] In yet another possible implementation manner, after receiving the second working instruction, the method further includes:

[0015] Based on the first relay, switch the configuration of the first frequency converter to the first configuration parameter, wherein the first configuration parameter is adapted to the first parameter;

[0016] Based on the second relay, switch the configuration of the second frequency converter to the third configuration parameter, wherein the third configuration parameter is adapted to the third parameter.

[0017] In another possible implementation manner, after receiving the third working instruction, the method further includes:

[0018] Based on the first relay, switch the configuration of the first frequency converter to the third configuration parameter, wherein the third configuration parameter is adapted to the third parameter;

[0019] Based on the second relay, switch the configuration of the second frequency converter to the second configuration parameter, wherein the second configuration parameter is adapted to the second parameter.

[0020] According to another aspect of the embodiments of the present application, a driving device is provided, which is applied to a multi-rolling mill production line. The multi-rolling mill production line includes a first frequency converter, a second frequency converter, a first disconnecting switch, a second disconnecting switch, a third disconnecting switch, a first finishing mill, a second finishing mill, and a third finishing mill; the isolating switch blade of the first disconnecting switch is connected to the first frequency converter, one contact of the first disconnecting switch is connected to the motor of the first finishing mill, and the second contact of the first disconnecting switch is connected to one contact of the second disconnecting switch; the isolating switch blade of the second disconnecting switch is connected to the motor of the second finishing mill, and the second contact of the second disconnecting switch is connected to one contact of the third disconnecting switch; the isolating switch blade of the third disconnecting switch is connected to the second frequency converter, and the second contact of the third disconnecting switch is connected to the motor of the third finishing mill; the device includes:

[0021] When receiving a first working instruction, control the isolating switch blade of the first disconnecting switch to conduct with one contact of the first disconnecting switch, the isolating switch blade of the third disconnecting switch to conduct with one contact of the third disconnecting switch, and the isolating switch blade of the second disconnecting switch to conduct with the second contact of the second disconnecting switch, so as to drive the motor of the first finishing mill based on the first frequency converter and drive the motor of the second finishing mill based on the second frequency converter; wherein, the first working instruction is used to indicate the start of the first finishing mill and the second finishing mill;

[0022] When receiving a second working instruction, control the isolating switch blade of the first disconnecting switch to conduct with one contact of the first disconnecting switch, and the isolating switch blade of the third disconnecting switch to conduct with the second contact of the third disconnecting switch, so as to drive the motor of the first finishing mill based on the first frequency converter and drive the motor of the third finishing mill based on the second frequency converter; wherein, the second working instruction is used to indicate the start of the first finishing mill and the third finishing mill;

[0023] When receiving a third working instruction, control the isolating switch blade of the first disconnecting switch to conduct with the second contact of the first disconnecting switch, the isolating switch blade of the second disconnecting switch to conduct with one contact of the second disconnecting switch, and the isolating switch blade of the third disconnecting switch to conduct with the second contact of the third disconnecting switch, so as to drive the motor of the second finishing mill based on the first frequency converter and drive the motor of the third finishing mill based on the second frequency converter; wherein, the third working instruction is used to indicate the start of the third finishing mill and the second finishing mill.

[0024] According to another aspect of the present application, an electronic device is provided. The electronic device includes: a memory, a processor, and a computer program stored on the memory. The processor executes the computer program to implement the steps of the method shown in the first aspect of the present application.

[0025] According to still another aspect of the present application, a rolling mill control system is provided. The rolling mill control system includes the device shown in the second aspect of the present application.

[0026] According to another aspect of the present application, there is provided a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the method shown in the first aspect of the present application are implemented.

[0027] The beneficial effects brought by the technical solution provided by the present application are as follows:

[0028] The driving method, device, equipment, control system and storage medium provided by the present application can configure a first disconnecting switch, a second disconnecting switch and a third disconnecting switch in a multi-rolling mill production line. When a working instruction is received, the conduction direction of the isolating knife of the corresponding disconnecting switch can be controlled to realize two inverters driving three finishing mills. When the production line is expanded from two finishing mills to three finishing mills, there is no need to configure an inverter, which saves the configuration cost of the production line and effectively improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 Schematic diagram of the application scenario of a multi-rolling mill production line for a driving method provided by an embodiment of the present application;

[0031] Figure 2 Schematic flow chart of a driving method provided by an embodiment of the present application;

[0032] Figure 3 Schematic diagram of the structure of a multi-rolling mill production line in a driving method provided by an embodiment of the present application;

[0033] Figure 4 Schematic diagram of the structure of an inverter in a driving method provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present disclosure.

[0035] Various structural schematic diagrams according to embodiments of the present disclosure are shown in the accompanying drawings. These figures are not drawn to scale, where certain details are enlarged for the purpose of clear expression, and some details may be omitted. The shapes of various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art can additionally design regions / layers with different shapes, sizes, and relative positions according to actual requirements.

[0036] In the context of the present disclosure, when a layer / element is referred to as being "on" another layer / element, the layer / element can be directly on the other layer / element, or there can be an intermediate layer / element between them. Additionally, if a layer / element is "on" another layer / element in one orientation, then when the orientation is reversed, the layer / element can be "under" the other layer / element.

[0037] The original high-speed wire production line was divided into two production lines, north and south. Each of the north and south lines had one 6300kW finishing mill synchronous motor, and only wire products could be produced. To improve product competitiveness, one 3200kW finishing mill synchronous motor was added after the 18th rolling mill of the original two high-speed wire lines, forming a high-speed bar and wire composite production line composed of three finishing mills, which could simultaneously carry out the production of two high-speed wires or (either south or north) high-speed wire + high-speed bar production.

[0038] The inventor found that in the original two production lines of the south high-speed wire and the north high-speed wire, there were two sets of ABB ACS6000 inverters driving two 6300kW synchronous motors for the finishing mills; after adding one high-speed bar finishing mill, one 3200kW finishing mill synchronous motor was also added, and one set of ABB ACS6000 inverter was needed to drive it. The ACS6000 inverter is a 3150V medium-voltage inverter, and one 10KV transformer, one 10KV high-voltage switchgear cabinet, one excitation transformer, and one low-voltage switchgear cabinet were also needed to supply power to it.

[0039] The inventor also found that although there are three finishing mills on the production line, there are only two sets of the front 1-18th rolling mills. Therefore, only three production modes of south high-speed wire + north high-speed wire or south high-speed wire + high-speed bar or north high-speed wire + high-speed bar can be carried out simultaneously, that is, only two inverters are used at the same time. If one set of ABB ACS6000 inverter, one 10KV transformer, one 10KV high-voltage switchgear cabinet, one excitation transformer, one low-voltage switchgear cabinet, and the civil engineering work of the transformer room are added, the investment is nearly 10 million. Due to process limitations, there will always be a set of electrical control systems left idle, resulting in waste.

[0040] Based on the above technical problems, in some embodiments of the present application, a first disconnector, a second disconnector, and a third disconnector are configured in a multi-rolling mill production line. When a work instruction is received, the conduction direction of the isolating knife of the corresponding disconnector can be controlled to realize two inverters driving three finishing mills. When the production line is expanded from two finishing mills to three finishing mills, there is no need to configure an inverter, saving the configuration cost of the production line and effectively improving the user experience.

[0041] Next, specific embodiments will be used to elaborate in detail on the technical solution of the present application and how the technical solution of the present application solves the above technical problems. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. Next, embodiments of the present application will be described in conjunction with the drawings.

[0042] A driving method is provided in an embodiment of the present application. As Figure 1 and Figure 2 shown, it can be applied to a multi-rolling mill production line. The multi-rolling mill production line includes a first inverter 101, a second inverter 102, a first disconnector 103, a second disconnector 104, a third disconnector 105, a first finishing mill 106, a second finishing mill 107, and a third finishing mill 108; the isolating knife of the first disconnector 103 is connected to the first inverter 101, one contact of the first disconnector 103 is connected to the motor M1 of the first finishing mill 106, and the second contact of the first disconnector 103 is connected to one contact of the second disconnector 104; the isolating knife of the second disconnector 104 is connected to the motor M2 of the second finishing mill, and the second contact of the second disconnector 104 is connected to one contact of the third disconnector 105; the isolating knife of the third disconnector 105 is connected to the second inverter 102, and the second contact of the third disconnector 105 is connected to the motor M3 of the third finishing mill 108; the method includes:

[0043] When a first work instruction is received, control the isolating knife of the first disconnector to conduct with one contact of the first disconnector, the isolating knife of the third disconnector to conduct with one contact of the third disconnector, and the isolating knife of the second disconnector to conduct with the second contact of the second disconnector, so as to drive the motor of the first finishing mill based on the first inverter and drive the motor of the second finishing mill based on the second inverter; wherein, the first work instruction is used to indicate the start of the first finishing mill and the second finishing mill;

[0044] When a second work instruction is received, control the isolating knife of the first disconnector to conduct with one contact of the first disconnector, and the isolating knife of the third disconnector to conduct with the second contact of the third disconnector, so as to drive the motor of the first finishing mill based on the first inverter and drive the motor of the third finishing mill based on the second inverter; wherein, the second work instruction is used to indicate the start of the first finishing mill and the third finishing mill;

[0045] When receiving the third working instruction, control the disconnector of the first disconnector switch to conduct with the second contact of the first disconnector switch, the disconnector of the second disconnector switch to conduct with the first contact of the second disconnector switch, and the disconnector of the third disconnector switch to conduct with the second contact of the third disconnector switch, so as to drive the motor of the second finishing mill based on the first frequency converter and drive the motor of the third finishing mill based on the second frequency converter; wherein, the third working instruction is used to indicate the start of the third finishing mill and the second finishing mill.

[0046] In the embodiment of the present application, by configuring the first disconnector switch, the second disconnector switch and the third disconnector switch in a multi-rolling mill production line, when receiving a working instruction, the conduction direction of the disconnector of the corresponding disconnector switch can be controlled, so as to realize two frequency converters driving three finishing mills. When the production line is expanded from two finishing mills to three finishing mills, there is no need to configure a frequency converter, which saves the configuration cost of the production line and effectively improves the user experience.

[0047] In a possible implementation manner provided in the embodiment of the present application, a first relay is configured inside the first frequency converter, and a second relay is configured inside the second frequency converter; the first relay is configured to activate the macro switching function of the first frequency converter, and the second relay is configured to activate the macro switching function of the second frequency converter, and the macro switching function is used to configure the configuration parameters of the first frequency converter or the second frequency converter.

[0048] In a possible implementation manner provided in the embodiment of the present application, the motor parameters of the first finishing mill are the first parameters, the motor parameters of the second finishing mill are the second parameters, and the motor parameters of the third finishing mill are the third parameters; the first parameter is equal to the third parameter, and the second parameter is different from the first parameter.

[0049] In a possible implementation manner provided in the embodiment of the present application, after receiving the first working instruction, the method further includes:

[0050] Based on the first relay, switch the configuration of the first frequency converter to the first configuration parameter, wherein the first configuration parameter is adapted to the first parameter, so that the first frequency converter can match the motor of the first finishing mill;

[0051] Based on the second relay, switch the configuration of the second frequency converter to the second configuration parameter, wherein the second configuration parameter is adapted to the second parameter, so that the second frequency converter can match the motor of the second finishing mill.

[0052] In a possible implementation manner provided in the embodiment of the present application, after receiving the second working instruction, the method further includes:

[0053] Based on the first relay, switch the configuration of the first frequency converter to the first configuration parameter, where the first configuration parameter is adapted to the first parameter so that the first frequency converter can match the motor of the first finishing mill;

[0054] Based on the second relay, switch the configuration of the second frequency converter to the third configuration parameter, where the third configuration parameter is adapted to the third parameter so that the second frequency converter can match the motor of the third finishing mill.

[0055] In an embodiment of the present application, a possible implementation manner is provided. After receiving the third working instruction, the method further includes:

[0056] Based on the first relay, switch the configuration of the first frequency converter to the third configuration parameter, where the third configuration parameter is adapted to the third parameter so that the first frequency converter can match the motor of the third finishing mill;

[0057] Based on the second relay, switch the configuration of the second frequency converter to the second configuration parameter, where the second configuration parameter is adapted to the second parameter so that the second frequency converter can match the motor of the second finishing mill.

[0058] For a better understanding of the above driving method, the following is combined with Figure 3 A detailed example of the driving method of the present application is elaborated. As Figure 3 shown, by using two sets of ABB ACS6000 frequency converter drive systems and a switching cabinet to drive two 6300KW synchronous motors and one 3200KW synchronous motor, it can not only save the cost of one ABB ACS6000 frequency converter drive system, but also meet the process and production requirements.

[0059] (1) There are three production modes in this production line:

[0060] 1. South high line + North high line production mode: The south line ACS6000 frequency converter drives the south line 6300KW synchronous motor through the south line switching cabinet, and the north line ACS6000 frequency converter drives the north line 6300KW synchronous motor through the north line switching cabinet to realize the production of two high lines.

[0061] 2. South high line + High bar production mode: The south line ACS6000 frequency converter drives the south line 6300KW synchronous motor through the south line switching cabinet, and the north line ACS6000 frequency converter drives the high bar 3200KW synchronous motor through the north line switching cabinet + high bar switching cabinet to realize the production of the south high line and the high bar.

[0062] 3. North high line + High bar production mode: The north line ACS6000 frequency converter drives the north line 6300KW synchronous motor through the north line switching cabinet, and the south line ACS6000 frequency converter drives the high bar 3200KW synchronous motor through the south line switching cabinet + high bar switching cabinet to realize the production of the north high line and the high bar.

[0063] (2) Requirements for the main circuit switching of the frequency converter

[0064] For the ACS6000 frequency converters on both the south line and the north line, there is only one main power output port. Whether controlling a 6300KW or a 3200KW motor, only one motor can be connected. How to output to different finishing mill motors as required and ensure the safe isolation of the two power supplies is the key point of this transformation. The supply voltage of the finishing mill motor is 3150V, which belongs to medium-voltage power supply. Once a line short circuit occurs, the consequences will be unthinkable. Considering the particularity of medium voltage, there are certain safety hazards in adopting automatic switching. Therefore, it is considered to selectively connect the main power output port of the ACS6000 frequency converter to the 6300 and 3200 motors through manual switching, and there should also be corresponding feedback, which is transmitted back to the PLC, and the information of the connected motor is displayed on the touch screen.

[0065] (3) Configuration of the main circuit switching cabinet of the frequency converter

[0066] The main circuit switching cabinet should not only meet the withstand voltage requirement of 3150V, but also have switching interlock protection and indication of the switching situation at the same time.

[0067] Two sets of isolating knife switches are added to the switching cabinets on the south line, north line and high-speed bar respectively. The main circuit lines of the two 6300KW and 3200KW motors are connected to different isolating knife switches respectively, and then gathered to the main circuit output end of the ACS6000 frequency converter. When it is necessary to switch the production mode, corresponding selection is made by manually opening and closing the isolating knife switches. In this way, the short circuit of the two power lines is perfectly avoided. At the same time, only one ACS6000 frequency converter is allowed to output power to one finishing mill motor through the isolating knife switch at a certain moment.

[0068] (4) Switching of the motor parameters of the ACS6000 frequency converter

[0069] 1. As Figure 4 shown, due to the different parameters such as torque, moment of inertia, resistance, and reactance of the 6300kW motor and the 3200kW motor, in addition to the main circuit needing to be switched, the ACS6000 frequency converter also needs to set the parameters of the two sets of motors, which are stored in different macros respectively. By closing the switching relay, the macro switching function of the ACS6000 frequency converter terminals is activated to switch the parameters of the 6300kW and 3200kW motors. Since there is only one 3200kW motor, it is required that the parameter settings of the 3200kW motors of the two ACS6000 frequency converters be exactly the same. The switching principle of the excitation parameters of the motor is the same as that of the frequency converter parameters.

[0070] 2. Add 2 switching relays to the logic control loop. When the main circuit switching meets the conditions, the corresponding switching relays actuate, and through the macro switching function of the ABB frequency converter and the ABB DC drive terminals, switch the motor parameters and excitation parameters of the two sets of 6300kW and 3200kW motors.

[0071] An embodiment of the present application provides a driving device, which is applied to a multi-rolling mill production line. The multi-rolling mill production line includes a first frequency converter, a second frequency converter, a first disconnecting switch, a second disconnecting switch, a third disconnecting switch, a first finishing mill, a second finishing mill, and a third finishing mill; the isolating switch blade of the first disconnecting switch is connected to the first frequency converter, one contact of the first disconnecting switch is connected to the motor of the first finishing mill, and the second contact of the first disconnecting switch is connected to one contact of the second disconnecting switch; the isolating switch blade of the second disconnecting switch is connected to the motor of the second finishing mill, and the second contact of the second disconnecting switch is connected to one contact of the third disconnecting switch; the isolating switch blade of the third disconnecting switch is connected to the second frequency converter, and the second contact of the third disconnecting switch is connected to the motor of the third finishing mill;

[0072] In the embodiment of the present application, the work instruction sending device can generate a corresponding work instruction according to user operations and send the work instruction to the driving device; among them, the work instruction sending device can specifically be a terminal device such as a mobile phone or a remote control; the driving device can be electrically connected to the first disconnecting switch, the second disconnecting switch, and the third disconnecting switch to control the connection modes of the disconnecting switches;

[0073] This driving device can be used for:

[0074] When receiving a first work instruction, control the isolating switch blade of the first disconnecting switch to conduct with one contact of the first disconnecting switch, the isolating switch blade of the third disconnecting switch to conduct with one contact of the third disconnecting switch, and the isolating switch blade of the second disconnecting switch to conduct with the second contact of the second disconnecting switch, so as to drive the motor of the first finishing mill based on the first frequency converter and drive the motor of the second finishing mill based on the second frequency converter; among them, the first work instruction is used to indicate the start of the first finishing mill and the second finishing mill;

[0075] When receiving a second work instruction, control the isolating switch blade of the first disconnecting switch to conduct with one contact of the first disconnecting switch, the isolating switch blade of the third disconnecting switch to conduct with the second contact of the third disconnecting switch, so as to drive the motor of the first finishing mill based on the first frequency converter and drive the motor of the third finishing mill based on the second frequency converter; among them, the second work instruction is used to indicate the start of the first finishing mill and the third finishing mill;

[0076] When receiving the third working instruction, control the isolation switch of the first disconnector to conduct with the two contacts of the first disconnector, the isolation switch of the second disconnector to conduct with the one contact of the second disconnector, and the isolation switch of the third disconnector to conduct with the two contacts of the third disconnector, so as to drive the motor of the second finishing mill based on the first frequency converter and drive the motor of the third finishing mill based on the second frequency converter; wherein, the third working instruction is used to indicate the startup of the third finishing mill and the second finishing mill.

[0077] In an embodiment of the present application, a possible implementation manner is provided. A first relay is configured inside the first frequency converter, and a second relay is configured inside the second frequency converter; the first relay is configured to activate the macro switching function of the first frequency converter, and the second relay is configured to activate the macro switching function of the second frequency converter. The macro switching function is used to configure the configuration parameters of the first frequency converter or the second frequency converter.

[0078] In an embodiment of the present application, a possible implementation manner is provided. The motor parameters of the first finishing mill are the first parameters, the motor parameters of the second finishing mill are the second parameters, and the motor parameters of the third finishing mill are the third parameters; the first parameter is equal to the third parameter, and the second parameter is different from the first parameter.

[0079] In an embodiment of the present application, a possible implementation manner is provided. The above device is further configured to:

[0080] Based on the first relay, switch the configuration of the first frequency converter to the first configuration parameter, wherein the first configuration parameter is adapted to the first parameter;

[0081] Based on the second relay, switch the configuration of the second frequency converter to the second configuration parameter, wherein the second configuration parameter is adapted to the second parameter.

[0082] In an embodiment of the present application, a possible implementation manner is provided. The above device is further configured to:

[0083] Based on the first relay, switch the configuration of the first frequency converter to the first configuration parameter, wherein the first configuration parameter is adapted to the first parameter;

[0084] Based on the second relay, switch the configuration of the second frequency converter to the third configuration parameter, wherein the third configuration parameter is adapted to the third parameter.

[0085] In an embodiment of the present application, a possible implementation manner is provided. The above device is further configured to:

[0086] Based on the first relay, switch the configuration of the first frequency converter to the third configuration parameter, wherein the third configuration parameter is adapted to the third parameter;

[0087] Based on the second relay, switch the configuration of the second frequency converter to the second configuration parameter, wherein the second configuration parameter is adapted to the second parameter.

[0088] The device according to the embodiment of the present application can execute the method provided by the embodiment of the present application, and their implementation principles are similar. The actions performed by each module in the device of each embodiment of the present application correspond to the steps in the method of each embodiment of the present application. For the detailed function description of each module of the device, reference can be specifically made to the description in the corresponding method shown above, and details are not described herein again.

[0089] In the embodiment of the present application, a first disconnecting switch, a second disconnecting switch, and a third disconnecting switch are configured in a multi-rolling mill production line. When a work instruction is received, the conduction direction of the isolating knife of the corresponding disconnecting switch can be controlled, so as to realize two inverters driving three finishing mills. When the production line is expanded from two finishing mills to three finishing mills, there is no need to configure an inverter, which saves the configuration cost of the production line and effectively improves the user experience.

[0090] An electronic device is provided in an embodiment of the present application, including a memory, a processor, and a computer program stored on the memory. The processor executes the above computer program to implement the steps of the driving method. Compared with the related art, it can be realized that: in the embodiment of the present application, a first disconnecting switch, a second disconnecting switch, and a third disconnecting switch are configured in a multi-rolling mill production line. When a work instruction is received, the conduction direction of the isolating knife of the corresponding disconnecting switch can be controlled, so as to realize two inverters driving three finishing mills. When the production line is expanded from two finishing mills to three finishing mills, there is no need to configure an inverter, which saves the configuration cost of the production line and effectively improves the user experience.

[0091] A rolling mill control system is provided in an embodiment of the present application, and the rolling mill control system includes a device as shown in the second aspect of the present application.

[0092] A computer-readable storage medium is provided in an embodiment of the present application, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method shown in the first aspect of the embodiment of the present application are implemented.

[0093] In the above description, no detailed description is made on technical details such as the composition of each layer. However, those skilled in the art should understand that various technical means can be used to form layers, regions, etc. of the required shape. In addition, in order to form the same structure, those skilled in the art can also design methods that are not exactly the same as the methods described above. In addition, although the above embodiments are described separately, this does not mean that the measures in each embodiment cannot be used advantageously in combination.

[0094] Although the preferred embodiments of the present application have been described, additional changes and modifications can be made to these embodiments by those skilled in the art once they learn the basic inventive concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications that fall within the scope of the present application.

[0095] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

1. A driving method, applied to a multi-rolling mill production line, characterized in that The multi-rolling mill production line includes a first frequency converter, a second frequency converter, a first disconnect switch, a second disconnect switch, a third disconnect switch, a first finishing mill, a second finishing mill, and a third finishing mill; the isolating switch blade of the first disconnect switch is connected to the first frequency converter, one contact of the first disconnect switch is connected to the motor of the first finishing mill, and the second contact of the first disconnect switch is connected to one contact of the second disconnect switch; the isolating switch blade of the second disconnect switch is connected to the motor of the second finishing mill, and the second contact of the second disconnect switch is connected to one contact of the third disconnect switch; the isolating switch blade of the third disconnect switch is connected to the second frequency converter, and the second contact of the third disconnect switch is connected to the motor of the third finishing mill. The driving method includes: When receiving a first working instruction, control the isolating switch blade of the first disconnect switch to conduct with one contact of the first disconnect switch, the isolating switch blade of the third disconnect switch to conduct with one contact of the third disconnect switch, and the isolating switch blade of the second disconnect switch to conduct with the second contact of the second disconnect switch, so as to drive the motor of the first finishing mill based on the first frequency converter and drive the motor of the second finishing mill based on the second frequency converter; wherein, the first working instruction is used to indicate the start of the first finishing mill and the second finishing mill; When receiving a second working instruction, control the isolating switch blade of the first disconnect switch to conduct with one contact of the first disconnect switch, the isolating switch blade of the third disconnect switch to conduct with the second contact of the third disconnect switch, so as to drive the motor of the first finishing mill based on the first frequency converter and drive the motor of the third finishing mill based on the second frequency converter; wherein, the second working instruction is used to indicate the start of the first finishing mill and the third finishing mill; When receiving a third working instruction, control the isolating switch blade of the first disconnect switch to conduct with the second contact of the first disconnect switch, the isolating switch blade of the second disconnect switch to conduct with one contact of the second disconnect switch, and the isolating switch blade of the third disconnect switch to conduct with the second contact of the third disconnect switch, so as to drive the motor of the second finishing mill based on the first frequency converter and drive the motor of the third finishing mill based on the second frequency converter; wherein, the third working instruction is used to indicate the start of the third finishing mill and the second finishing mill.

2. The method according to claim 1, wherein A first relay is configured inside the first frequency converter, and a second relay is configured inside the second frequency converter; the first relay is configured to activate the macro switching function of the first frequency converter, and the second relay is configured to activate the macro switching function of the second frequency converter. The macro switching function is used to configure the configuration parameters of the first frequency converter or the second frequency converter.

3. The method according to claim 2, wherein The motor parameters of the first finishing mill are the first parameters, the motor parameters of the second finishing mill are the second parameters, and the motor parameters of the third finishing mill are the third parameters; the first parameter is equal to the third parameter, and the second parameter is different from the first parameter.

4. The method according to claim 3, wherein After receiving the first working instruction, the method further includes: Switch the configuration of the first frequency converter to a first configuration parameter based on the first relay, wherein the first configuration parameter is adapted to the first parameter; Switch the configuration of the second frequency converter to a second configuration parameter based on the second relay, wherein the second configuration parameter is adapted to the second parameter.

5. The method according to claim 3, characterized in that, After receiving the second working instruction, the method further includes: Switch the configuration of the first frequency converter to a first configuration parameter based on the first relay, wherein the first configuration parameter is adapted to the first parameter; Switch the configuration of the second frequency converter to a third configuration parameter based on the second relay, wherein the third configuration parameter is adapted to the third parameter.

6. The method according to claim 3, wherein After receiving the third working instruction, the method further includes: Switch the configuration of the first frequency converter to a third configuration parameter based on the first relay, wherein the third configuration parameter is adapted to the third parameter; Switch the configuration of the second frequency converter to a second configuration parameter based on the second relay, wherein the second configuration parameter is adapted to the second parameter.

7. A driving device is applied to a multi-rolling mill production line, characterized in that, The multi-rolling mill production line includes a first frequency converter, a second frequency converter, a first disconnect switch, a second disconnect switch, a third disconnect switch, a first finishing mill, a second finishing mill, and a third finishing mill; the isolating switch blade of the first disconnect switch is connected to the first frequency converter, one contact of the first disconnect switch is connected to the motor of the first finishing mill, and the second contact of the first disconnect switch is connected to one contact of the second disconnect switch; the isolating switch blade of the second disconnect switch is connected to the motor of the second finishing mill, and the second contact of the second disconnect switch is connected to one contact of the third disconnect switch; the isolating switch blade of the third disconnect switch is connected to the second frequency converter, and the second contact of the third disconnect switch is connected to the motor of the third finishing mill; the device is used for: When receiving a first working instruction, control the isolating switch blade of the first disconnect switch to conduct with one contact of the first disconnect switch, the isolating switch blade of the third disconnect switch to conduct with one contact of the third disconnect switch, and the isolating switch blade of the second disconnect switch to conduct with the second contact of the second disconnect switch, so as to drive the motor of the first finishing mill based on the first frequency converter and drive the motor of the second finishing mill based on the second frequency converter; wherein, the first working instruction is used to indicate the start of the first finishing mill and the second finishing mill; When receiving a second working instruction, control the isolating switch blade of the first disconnect switch to conduct with one contact of the first disconnect switch, and the isolating switch blade of the third disconnect switch to conduct with the second contact of the third disconnect switch, so as to drive the motor of the first finishing mill based on the first frequency converter and drive the motor of the third finishing mill based on the second frequency converter; wherein, the second working instruction is used to indicate the start of the first finishing mill and the third finishing mill; When receiving the third working instruction, control the isolation switch blade of the first disconnecting switch to conduct with the second contact of the first disconnecting switch, the isolation switch blade of the second disconnecting switch to conduct with the first contact of the second disconnecting switch, and the isolation switch blade of the third disconnecting switch to conduct with the second contact of the third disconnecting switch, so as to drive the motor of the second finishing mill based on the first frequency converter and drive the motor of the third finishing mill based on the second frequency converter; wherein, the third working instruction is used to indicate the startup of the third finishing mill and the second finishing mill.

8. An electronic device, characterized in that, Comprising: A memory, a processor, and a computer program stored on the memory and executable on the processor, wherein when the processor executes the computer program, the method described in any one of claims 1-6 is implemented.

9. A rolling mill control system, characterized in that, Comprising the device described in any one of claim 7.

10. A computer-readable storage medium, characterized in that, At least one program code is stored in the computer-readable storage medium, and the at least one program code is loaded and executed by the processor to implement the operations performed by the method described in any one of claims 1-6.

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