Ice melting switch

Abstract

The invention discloses an ice melting switch, and relates to the technical field of direct current ice melting, and the ice melting switch comprises a plurality of ice melting access switches which are respectively connected with a plurality of line leads to be subjected to ice melting; each ice melting access switch comprises an operating mechanism, a mechanical connecting rod, a plurality of connecting terminals, a plurality of static contacts and a plurality of moving contacts; the operating mechanism is used for receiving a control signal sent by the direct-current ice melting device; according to the control signal, the mechanical connecting rod is operated to move according to a preset motion trail; and the mechanical connecting rod is used for driving the moving contact to move towards the position of the corresponding static contact during movement until the moving contact is in contact with the static contact to form electric conduction, and / or driving the moving contact to move towards the direction away from the corresponding static contact during movement until the moving contact is disconnected from the static contact. According to the invention, the operability and reliability of ice melting flexible switching between DC positive and negative pole output and three-phase wires can be improved, the number is optimized, and a strict working state is defined to facilitate centralized control.

Description

Technical Field

[0001] The present invention relates to the technical field of DC ice melting, and particularly to an ice melting switch. Background Art

[0002] This section aims to provide background or context for the embodiments of the present invention described in the specification. The description herein is not admitted to be prior art merely because it is included in this section.

[0003] In the field of power transmission, in harsh climate conditions such as winter, icing of transmission lines is extremely likely to occur. Icing will significantly increase the weight of the wire, change the sag of the wire, and may even cause wire galloping, wire breakage, and pole tilt or even collapse in severe cases. As an effective de-icing means, the principle of DC ice melting technology is to pass a DC current through the iced wire and use the thermal effect generated by the current to melt the ice. The ice melting switch, as a key component in the DC ice melting system, directly determines the ice melting effect and the reliability of the system by its performance. However, there are many deficiencies in the existing ice melting switches in terms of structural design and function implementation. Especially when applied to the ice melting of three-phase AC wires, it cannot well meet the requirements of the DC ice melting of three-phase wires for ease of use.

[0004] In the field of DC ice melting, the currently common switches for the ice melting of three-phase wires lack flexibility. When it is necessary to switch the three-phase wires for ice melting, their control methods are relatively single. Often, manual reconnection of the circuit is required, which is cumbersome and time-consuming, and cannot quickly respond to different ice melting requirements, resulting in low efficiency of ice melting operations and prone to human operation errors. At the same time, it is impossible to accurately control according to real-time ice melting conditions and parameters, resulting in difficulties in ensuring ice melting efficiency and safety. The complex structure and more operating mechanisms make the procurement cost of the ice melting switch remain high. Moreover, the frequent maintenance requirements and power failure losses caused by failures further increase the overall operating cost. Summary of the Invention

[0005] The embodiments of the present invention provide an ice melting switch to improve the response speed, efficiency and flexibility of ice melting operations, reduce the ice melting cost and maintenance workload, and improve the operating efficiency and reliability of the power system. The ice melting switch includes: a plurality of ice melting access switches respectively connected to the wires of a plurality of lines to be iced; the ice melting access switch is used for ice melting of the connected line to be iced.

[0006] Each ice melting access switch includes: an operating mechanism, a mechanical link, a plurality of connection terminals, a plurality of static contacts, and a plurality of moving contacts respectively corresponding to the plurality of static contacts; the operating mechanism is respectively connected to the plurality of moving contacts through the mechanical link; the plurality of connection terminals are respectively connected to the static contacts or the moving contacts.

[0007] The connection terminal is used for connecting a DC ice melting device or the wire of the line to be iced.

[0008] The operating mechanism is used to receive the control signal sent by the DC ice melting device; and operate the mechanical linkage to move according to a preset motion trajectory according to the control signal.

[0009] The mechanical linkage is used to: drive the moving contact to move towards the position where the corresponding static contact is located during movement until the moving contact contacts the static contact to form electrical conduction, and / or drive the moving contact to move away from the corresponding static contact during movement until the moving contact and the static contact are disconnected.

[0010] Compared with the ice melting switch in the prior art, the embodiment of the present invention includes a plurality of ice melting access switches respectively connected to the conductors of a plurality of lines to be ice melted; the ice melting access switch is used to ice melt the connected line to be ice melted; each ice melting access switch includes: an operating mechanism, a mechanical linkage, a plurality of connection terminals, a plurality of static contacts and a plurality of moving contacts respectively corresponding to the plurality of static contacts; the operating mechanism is respectively connected to the plurality of moving contacts through the mechanical linkage; the plurality of connection terminals are respectively connected to the static contacts or the moving contacts; the connection terminals are used to connect the DC ice melting device or the conductors of the line to be ice melted; the operating mechanism is used to receive the control signal sent by the DC ice melting device; operate the mechanical linkage to move according to a preset motion trajectory according to the control signal; the mechanical linkage is used to: drive the moving contact to move towards the position where the corresponding static contact is located during movement until the moving contact contacts the static contact to form electrical conduction, and / or drive the moving contact to move away from the corresponding static contact during movement until the moving contact and the static contact are disconnected, which can improve the response speed, efficiency and flexibility of the ice melting operation, reduce the ice melting cost and maintenance workload, and improve the operation benefit and reliability of the power system. Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings. In the drawings:

[0012] Figure 1 It is a schematic diagram of an ice melting switch provided in an embodiment of the present invention;

[0013] Figure 2 It is a schematic diagram of an ice melting access switch provided in an embodiment of the present invention;

[0014] Figure 3 It is a schematic diagram of a specific example of an ice melting access switch provided in an embodiment of the present invention;

[0015] Figure 4Schematic diagram of a specific example of an ice - melting switch provided in an embodiment of the present invention;

[0016] Figure 5 Principle flowchart of an ice - melting switch provided in an embodiment of the present invention. Detailed implementation manners

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer and more understandable, the following further describes the embodiments of the present invention in detail with reference to the accompanying drawings. Herein, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but not to limit the present invention.

[0018] The term "and / or" in this article merely describes an associated relationship and indicates that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the term "at least one" in this article means any one of multiple or any combination of at least two of multiple. For example, including at least one of A, B, and C can represent any one or more elements selected from the set composed of A, B, and C.

[0019] In the description of this specification, the terms "comprising", "including", "having", "containing", etc. are all open - ended terms, that is, they are meant to include but not be limited to. The description with reference to terms such as "an embodiment", "a specific embodiment", "some embodiments", "for example", etc. means that the specific features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above - mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. The step sequences involved in each embodiment are used to schematically illustrate the implementation of this application, and the step sequences are not limited and can be adjusted appropriately as needed.

[0020] In the field of DC ice - melting, the currently common switches for three - phase wire ice - melting are significantly different from the present invention in terms of design concept and structure. The existing technical solutions mainly focus on the connection stability between the ice - melting device and the wire to be ice - melted, such as considering the DC output voltage and the insulation safety of the wire to be ice - melted during normal operation, and the optimization of the specific internal structure of the switch. However, they do not consider the operability and reliability of the flexible switching of the DC positive and negative pole outputs for ice - melting of the three - phase wires, do not optimize the quantity, and at the same time define strict working states for convenient centralized control.

[0021] From the perspective of the connection between the positive and negative poles of DC ice melting and the three-phase conductors of ice melting, traditional switches mostly adopt a fixed connection mode. Usually, the positive and negative poles of the DC ice melting device are directly connected to two of the corresponding three-phase conductors through simple terminal blocks. Although this connection method can achieve the basic ice melting function, it lacks flexibility. When it is necessary to switch the three-phase conductors for ice melting, it is often necessary to manually reconnect the circuit, which is cumbersome and time-consuming, and cannot quickly respond to different ice melting requirements, resulting in low efficiency of ice melting operations. Lack of effective automatic control means, the ice melting process mainly relies on manual operation, which is prone to human operation errors. At the same time, it is impossible to accurately control according to real-time ice melting conditions and parameters, resulting in difficulties in ensuring ice melting efficiency and safety. The complex structure and numerous operating mechanisms make the procurement cost of the ice melting switch remain high. Moreover, the frequent maintenance requirements and power failure losses caused by failures further increase the overall operating cost.

[0022] In view of the above research, in order to improve the response speed, efficiency and flexibility of ice melting operations, reduce the ice melting cost and maintenance workload, and improve the operation efficiency and reliability of the power system, an ice melting switch is provided in an embodiment of the present invention. Figure 1 The following is a schematic diagram of an ice melting switch provided in an embodiment of the present invention, as Figure 1 shown, an ice melting switch provided in an embodiment of the present invention may include: a plurality of ice melting access switches respectively connected to the conductors of a plurality of lines to be ice melted; the ice melting access switches are used for ice melting the connected lines to be ice melted.

[0023] Each ice melting access switch includes: an operating mechanism, a mechanical link, a plurality of connection terminals, a plurality of static contacts and a plurality of moving contacts respectively corresponding to the plurality of static contacts; the operating mechanism is respectively connected to the plurality of moving contacts through the mechanical link; the plurality of connection terminals are respectively connected to the static contacts or the moving contacts.

[0024] The connection terminals are used for connecting the DC ice melting device or the conductors of the lines to be ice melted.

[0025] The operating mechanism is used for receiving a control signal sent by the DC ice melting device; operating the mechanical link to move along a preset movement trajectory according to the control signal.

[0026] The mechanical link is used for: when moving, driving the moving contact to move towards the position where the corresponding static contact is located until the moving contact contacts the static contact to form electrical conduction, and / or, when moving, driving the moving contact to move away from the corresponding static contact until the moving contact disconnects from the static contact.

[0027] In the power system, icing on transmission lines is a key issue affecting the stable transmission of electricity. DC de-icing technology is an effective solution, and the de-icing switch is the core component. Through research, it is found that the existing de-icing switches have defects in terms of operation flexibility, reliability, and versatility, and cannot meet the complex working conditions requirements of DC de-icing for three-phase conductors. Therefore, it is clear that the new de-icing switch needs to have the technical requirements of flexible operation, high reliability, and good versatility.

[0028] In the embodiment of the present invention, through a unique mechanical structure design and three-phase de-icing control logic, operators can quickly and conveniently perform individual de-icing operations on the three-phase conductors and flexibly switch the de-icing phases. Without complex manual operations or cumbersome program settings, it can meet the de-icing requirements under different working conditions, greatly improving the response speed and efficiency of the de-icing operation. Compared with the traditional structure, the design of reducing the number of operating mechanisms not only reduces the procurement cost of the equipment, but also reduces the subsequent maintenance workload and maintenance cost. At the same time, it improves the reliable performance of de-icing and the efficient de-icing efficiency, shortens the de-icing operation time, reduces the power failure losses caused by line icing, and improves the operation efficiency of the power system as a whole.

[0029] Figure 2 It is a schematic diagram of a de-icing access switch provided in the embodiment of the present invention. As Figure 2 shown, in one embodiment, the static contact can include a first static contact 1 and a second static contact 2; the connection terminals include a connection terminal 7 connected to the first static contact 1 and a connection terminal 8 connected to the second static contact 2.

[0030] In one embodiment, as Figure 2 shown, the moving contact can include a first moving contact 3 corresponding to the first static contact 1 and a second moving contact 4 corresponding to the second static contact 2; the connection terminals 9 respectively connected to the first moving contact 3 and the second moving contact 4 are used to connect the conductors of the line to be de-iced.

[0031] The de-icing access switch can also include an operating mechanism 5 and a mechanical connecting rod 6. The first moving contact 3 and the second moving contact 4 are linked by operating the mechanical connecting rod 6 through the operating mechanism 5. The connection terminals 7, the connection terminal 8, and the connection terminal 9 are respectively used to connect the de-icing access switch to the DC de-icing device or the conductors of the line to be de-iced.

[0032] In one embodiment, the mechanical connecting rod 6 is specifically used for: when moving, driving the first moving contact 3 to move towards the position where the first static contact 1 is located until the first moving contact 3 contacts the first static contact 1 to form electrical conduction, and at the same time driving the second moving contact 4 to move away from the second static contact 2 until the second moving contact 4 disconnects from the second static contact 2.

[0033] In one embodiment, the mechanical link 6 is further specifically configured to: when moving, drive the second moving contact 4 to move towards the position of the second static contact 2 until the second moving contact 4 contacts the second static contact 2 to form electrical conduction, and at the same time drive the first moving contact 3 to move away from the first static contact 1 until the first moving contact 3 disconnects from the first static contact 1.

[0034] When the ice melting access switch is operating, the operating mechanism 5 provides power for the linkage of the first moving contact 3 and the second moving contact 4. When the operating mechanism 5 is activated, the generated power is transmitted to the mechanical link 6 through internal transmission components. Under the action of the power, the mechanical link 6 undergoes displacement or rotation along a specific movement trajectory. This movement drives the first moving contact 3 to move towards the first static contact 1 until the two contact and form good electrical conduction; at the same time, the linkage effect of the mechanical link 6 causes the second moving contact 4 to move away from the second static contact 2, thereby realizing the separation of the second static contact 2 and the second moving contact 4, and achieving the operating state where the second static contact 2 and the second moving contact 4 are separated when the first static contact 1 and the first moving contact 3 are conducting.

[0035] In one embodiment, when the first moving contact of an ice melting access switch contacts the first static contact to form electrical conduction and the second moving contact is disconnected from the second static contact, the operating state of the ice melting access switch is determined as the closed position state; when the second moving contact of an ice melting access switch contacts the second static contact to form electrical conduction and the first moving contact is disconnected from the first static contact, the operating state of the ice melting access switch is determined as the open position state.

[0036] Figure 3 Schematic diagram of a specific example of an ice melting access switch provided in an embodiment of the present invention, as Figure 3 shown, the operating state of the ice melting access switch can be divided into a closed position state or an open position state. When the operating state of the ice melting access switch is the open position state, the ice melting access switch is as shown in Figure 3 (a) in, that is, when the first static contact 1 is separated from the first moving contact 3 and the second static contact 2 is conducting with the second moving contact 4, the ice melting access switch is in the open position. When the operating state of the ice melting access switch is the closed position state, the ice melting access switch is as shown in Figure 3 (b) in, that is, when the first static contact 1 is conducting with the first moving contact 3 and the second static contact 2 is separated from the second moving contact 4, the ice melting access switch is in the closed position state.

[0037] In one embodiment, the operating mechanism 5 can adopt an electric drive mode, a hydraulic drive mode or a pneumatic drive mode; if the operating mechanism 5 adopts an electric drive mode, the operating mechanism 5 can include a motor and transmission components connected to the motor; the motor is used to generate kinetic energy and transfer the kinetic energy to the transmission components; the transmission components are used to transfer the received kinetic energy to the mechanical link 6; if the operating mechanism 5 adopts a hydraulic drive mode, the operating mechanism 5 can include a hydraulic pump and transmission components connected to the hydraulic pump; the hydraulic pump is used to push the transmission components through the output high-pressure liquid; the transmission components are used to drive the mechanical link 6 to move; if the operating mechanism 5 adopts a pneumatic drive mode, the operating mechanism 5 includes a cylinder and transmission components connected to the cylinder; the cylinder is used to compress air to drive the transmission components to move; the transmission components are used to drive the mechanical link 6 to move.

[0038] When the operating mechanism 5 is started, if it is electrically driven, the power generated by the motor is transmitted to the mechanical link 6 through transmission components such as a gear set and a transmission shaft; if the operating mechanism 5 adopts a hydraulic drive, the high-pressure liquid output by the hydraulic pump pushes a piston or a hydraulic motor, and the hydraulic energy is converted into the movement of the mechanical link 6 through connecting components such as a connecting rod and a crankshaft, thereby driving the first moving contact 3 and the second moving contact 4 to achieve the above-mentioned linkage. The pneumatic drive principle is similar, the compressed air pushes the piston in the cylinder, and drives the mechanical link 6 through mechanical connection to complete the linkage operation of the first moving contact 3 and the second moving contact 4.

[0039] In view of the characteristics that three-phase de-icing needs to be switched simultaneously and the DC power supply has positive and negative poles, the de-icing access switch includes a unique structure composed of a first static contact 1, a second static contact 2, a first moving contact 3, a second moving contact 4, an operating mechanism 5 and a mechanical link 6. Through the driving mechanism of the operating mechanism 5 for the mechanical link 6, the precise linkage of the first moving contact 3 and the second moving contact 4 is realized. When the operating mechanism 5 operates, no matter it adopts an electric, hydraulic or pneumatic drive mode, the power is transmitted to the mechanical link 6. Taking the electric drive as an example, the torque generated by the motor drives the mechanical link 6 to move along a specific trajectory by means of transmission components such as a gear set and a transmission shaft, achieving the working state where the first static contact 1 is in conduction with the first moving contact 3 and the second static contact 2 is separated from the second moving contact 4, meeting the three-phase de-icing switching requirements, while reducing the number of operating mechanisms, and lowering the equipment cost and maintenance difficulty.

[0040] In one embodiment, the connection terminal is specifically used for: connecting the DC de-icing device by means of crimping or welding, or connecting the conductor of the line to be de-iced by means of crimping or welding.

[0041] To achieve a reliable connection with the DC ice melting device and the conductors of the line to be de-iced, connection terminal 7 and connection terminal 8 are respectively used to connect the positive and negative busbars of the DC ice melting device, and connection terminal 9 is used to connect to the conductors of the line to be de-iced. In terms of the connection process, methods such as crimping or welding can be adopted to ensure the stability and conductivity of the electrical connection and guarantee the smooth transmission of the ice melting current.

[0042] Figure 4 This is a schematic diagram of a specific example of an ice melting switch provided in an embodiment of the present invention. Taking the ice melting switch configured for DC ice melting of three-phase (A, B, and C phases) conductors as an example, as Figure 4 shown, when connecting to the DC ice melting device and the conductors of the line to be de-iced, connection terminal 7 connected to the first static contact 1 can be used to connect to the positive busbar of the DC ice melting device; connection terminal 8 connected to the second static contact 2 can be used to connect to the negative busbar of the DC ice melting device. The connection terminals 9 of different ice melting access switches are respectively connected to the conductors of different phases of the line to be de-iced. For example, the connection terminal 9 of the ice melting access switch K1 is connected to the conductor of phase A (line to be de-iced), the connection terminal 9 of the ice melting access switch K1 is connected to the conductor of phase B (line to be de-iced), and the connection terminal 9 of the ice melting access switch K1 is connected to the conductor of phase C (line to be de-iced).

[0043] In one embodiment, if an ice melting access switch is in the closed position, the DC ice melting device passes a DC current through the conductors of the line to be de-iced via the ice melting access switch to de-ice the line. When the ice melting access switch K1 is in the closed position, the ice melting access switch K2 is in the open position, and the ice melting access switch K3 is in the open position, the DC ice melting device passes a DC current to de-ice the conductor of phase A using the thermal effect generated by the current. When the ice melting access switch K1 is in the open position, the ice melting access switch K2 is in the closed position, and the ice melting access switch K3 is in the open position, the DC ice melting device de-ices the conductor of phase B. When the ice melting access switch K1 is in the closed position, the ice melting access switch K2 is in the open position, and the ice melting access switch K3 is in the closed position, the DC ice melting device de-ices the conductor of phase C.

[0044] To achieve flexible and precise control of three-phase ice melting and clearly define the working states of the closed and open positions of the ice melting access switch. Three ice melting access switches K1, K2, and K3 are set, corresponding to the conductors of phases A, B, and C respectively. By controlling the combination of the closed and open states of different switches, such as when K1 is in the closed position, K2 is in the open position, and K3 is in the open position, the DC ice melting device performs ice melting operation on the conductor of phase A, thereby achieving precise control of ice melting for three-phase conductors.

[0045] In one embodiment, the control signals received by different operating mechanisms are different.

[0046] In one embodiment, the control signal is issued by the DC ice melting device according to the real-time parameter values of each line to be de-iced and the preset ice melting conditions; the ice melting conditions include: the real-time parameter values are within the preset parameter value range; the real-time parameter values include real-time ambient temperature data, real-time conductor ice coating thickness data, and / or real-time ice melting current data.

[0047] To achieve the automation and precision of the ice melting process, specific ice melting strategies can be written into the control and protection program. This program automatically controls the closing, opening, and three-phase ice melting switching operation processes of the ice melting access switches K1, K2, and K3 according to the preset ice melting conditions and parameters, such as ambient temperature, conductor ice coating thickness, ice melting current magnitude, etc., improving the ice melting efficiency and safety. Figure 5 The following is a principle flow chart of an ice melting switch provided in an embodiment of the present invention. As Figure 5 shown, the operation process of the switching of the ice melting switch is as follows: Obtain the real-time parameter values of a line to be de-iced, such as ambient temperature, conductor ice coating thickness, and / or ice melting current magnitude; determine whether the real-time parameter values are within the preset parameter value range, such as determining whether the conductor ice coating thickness is greater than 1 cm; if so, the DC ice melting device sends a control signal to the operating mechanism to control the ice melting access switch to become in the closed position and pass a DC current to the line to be de-iced for ice melting; if not, the DC ice melting device sends a control signal to the operating mechanism to control the ice melting access switch to become in the open position.

[0048] In summary, compared with the ice melting switch in the prior art, the embodiment of the present invention includes a plurality of ice melting access switches respectively connected to the conductors of a plurality of lines to be de-iced; the ice melting access switches are used to de-ice the connected lines to be de-iced; each ice melting access switch includes: an operating mechanism, a mechanical link, a plurality of connection terminals, a plurality of static contacts, and a plurality of moving contacts respectively corresponding to the plurality of static contacts; the operating mechanism is respectively connected to the plurality of moving contacts through the mechanical link; the plurality of connection terminals are respectively connected to the static contacts or the moving contacts; the connection terminals are used to connect the DC ice melting device or the conductors of the lines to be de-iced; the operating mechanism is used to receive the control signal sent by the DC ice melting device; according to the control signal, operate the mechanical link to move according to a preset movement trajectory; the mechanical link is used for: when moving, driving the moving contact to move towards the position where the corresponding static contact is located until the moving contact contacts the static contact to form electrical conduction, and / or, when moving, driving the moving contact to move away from the corresponding static contact until the moving contact and the static contact are disconnected, which can improve the response speed, efficiency, and flexibility of the ice melting operation, reduce the ice melting cost and maintenance workload, and improve the operation efficiency and reliability of the power system.

[0049] In the embodiments of the present invention, through a unique mechanical structure design and three-phase ice melting control logic, operators can quickly and conveniently perform individual ice melting operations on the three-phase conductors and flexibly switch the ice melting phases. Without complex manual operations or cumbersome program settings, the ice melting requirements under different working conditions can be met, greatly improving the response speed and efficiency of the ice melting operation. Compared with the traditional structure, the design of reducing the number of operating mechanisms not only reduces the procurement cost of the equipment, but also reduces the subsequent maintenance workload and maintenance cost. At the same time, it improves the reliable performance of ice melting and the efficient ice melting efficiency, shortens the ice melting operation time, reduces the power failure losses caused by line icing, and improves the overall operation efficiency of the power system. The present invention can improve the operability and reliability of the flexible switching between the DC positive and negative outputs and the three-phase conductors for ice melting, optimize the quantity, and define strict working states for convenient centralized control.

[0050] This ice melting switch innovatively adopts a combination of a static contact, a moving contact, an operating mechanism, and a mechanical connecting rod. By operating the mechanical connecting rod through the operating mechanism, the precise linkage of the moving contact is realized. This structural design provides convenience for the three-phase ice melting switching structurally. This design can reduce the number of operating mechanisms while meeting the requirements of three-phase ice melting switching, reduce the equipment cost and maintenance difficulty, and has obvious advantages compared with the complex structure of the traditional switch during three-phase ice melting switching.

[0051] The closed position and open position states of the ice melting switch are precisely defined. Based on this, an efficient control strategy for ice melting of the three-phase conductors is constructed. Three ice melting access switches K1, K2, and K3 are set to correspond to the A, B, and C phase conductors respectively. By precisely controlling the closing and opening states of these three switches, the ice melting operations on different phase conductors are realized. For example, when K1 is in the closed position, K2 is in the open position, and K3 is in the open position, the DC ice melting device melts the A-phase conductor. This control strategy greatly improves the flexibility and controllability of the three-phase ice melting operation.

[0052] The design of the connection terminal fully considers the connection requirements with the DC ice melting device and the conductors of the line to be iced.

[0053] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0054] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0055] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means that implement the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0056] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0057] The specific embodiments described above further elaborate on the objectives, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ice melting switch, characterized in that: include: A plurality of ice-melting access switches respectively connected to the conductors of a plurality of lines to be melted; The ice-melting access switch is used to melt ice on the connected ice-melting line; Each ice melting access switch includes: an operating mechanism, a mechanical connecting rod, a plurality of connecting terminals, a plurality of stationary contacts and a plurality of moving contacts corresponding to the plurality of stationary contacts respectively; The operating mechanism is connected to the plurality of moving contacts respectively through the mechanical connecting rod; the plurality of connecting terminals are connected to the stationary contact or the moving contact respectively; The connecting terminal is used to connect a DC ice-melting device or a conductor of a line to be ice-melted; The operating mechanism is used to receive a control signal from the DC ice melting device; according to the control signal, the mechanical connecting rod is operated to move along a preset motion trajectory; The mechanical connecting rod is used to: drive the moving contact to move toward the position of the corresponding stationary contact until the moving contact contacts the stationary contact to form electrical conduction, and / or drive the moving contact to move away from the corresponding stationary contact until the moving contact is disconnected from the stationary contact.

2. The ice melting switch according to claim 1, characterized in that: The stationary contact comprises a first stationary contact and a second stationary contact; The connection terminal connected to the first static contact is used to connect the positive busbar of the DC ice melting device; The connection terminal connected to the second static contact is used to connect the negative busbar of the DC ice melting device.

3. The ice melting switch according to claim 2, characterized in that: The moving contact includes a first moving contact corresponding to the first stationary contact, and a second moving contact corresponding to the second stationary contact; The connection terminals respectively connected to the first moving contact and the second moving contact are used to connect the wires of the circuit to be de-iced.

4. The ice melting switch according to claim 3, characterized in that: The mechanical connecting rod is specifically used to: drive the first moving contact to move toward the position of the first static contact until the first moving contact contacts the first static contact to form electrical conduction, and at the same time drive the second moving contact to move away from the second static contact until the second moving contact is disconnected from the second static contact.

5. The ice melting switch according to claim 4, characterized in that: The mechanical connecting rod is also specifically used to: drive the second moving contact to move toward the position of the second static contact until the second moving contact contacts the second static contact to form electrical conduction, and at the same time drive the first moving contact to move away from the first static contact until the first moving contact is disconnected from the first static contact.

6. The ice melting switch according to claim 5, characterized in that: When the first moving contact of an ice-melting access switch contacts the first static contact to form electrical conduction, and the second moving contact is disconnected from the second static contact, the working state of the ice-melting access switch is determined to be a closed state; When the second moving contact of an ice-melting access switch contacts with the second static contact to form electrical conduction, and the first moving contact is disconnected from the first static contact, the working state of the ice-melting access switch is determined to be an open state; If an ice-melting access switch is in a closed state, the DC ice-melting device passes a DC current to the ice-melting line through the conductor of the ice-melting line connected to the ice-melting access switch to melt the ice.

7. The ice melting switch according to claim 1, characterized in that: Different operating mechanisms receive different control signals.

8. The ice melting switch according to claim 7, characterized in that: The control signal is issued by the DC ice-melting device according to the real-time parameter value of each ice-melting line and the preset ice-melting conditions; the ice-melting conditions include: the real-time parameter value is within the preset parameter value range; the real-time parameter value includes real-time ambient temperature data, real-time conductor ice thickness data, and / or real-time ice-melting current data.

9. The ice melting switch according to claim 1, characterized in that: The operating mechanism adopts electric drive mode, hydraulic drive mode or pneumatic drive mode; If the operating mechanism adopts an electric drive mode, the operating mechanism includes a motor and a transmission component connected to the motor; the motor is used to generate kinetic energy and transfer the kinetic energy to the transmission component; the transmission component is used to transfer the received kinetic energy to the mechanical connecting rod; If the operating mechanism adopts a hydraulic drive mode, the operating mechanism includes a hydraulic pump and a transmission component connected to the hydraulic pump; the hydraulic pump is used to push the transmission component through the output liquid; the transmission component is used to drive the mechanical connecting rod to move; If the operating mechanism adopts a pneumatic drive mode, the operating mechanism includes a cylinder and a transmission component connected to the cylinder; the cylinder is used for compressing air to drive the transmission component to move; and the transmission component is used for driving the mechanical connecting rod to move.

10. The ice melting switch according to claim 1, characterized in that: The connecting terminal is specifically used for connecting a DC ice-melting device by crimping or welding, or connecting a conductor of a circuit to be ice-melted by crimping or welding.

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