Switch control signal conversion terminal

Abstract

The invention relates to the technical field of generator car synchronous grid connection and low-voltage loop closing device line sequence detection, in particular to a switch control signal conversion terminal which comprises a low-voltage switch. The system also comprises a phase sequence instrument phasing control module, a phase sequence module protection module, a phasing instrument automatic switching control module, a terminal fault alarm module, an electric signal manual conversion module, an electric signal automatic conversion module, a terminal light indication module, an intelligent heat dissipation module and a terminal operation state cloud sharing module. The phase sequence instrument phase checking control module is used for checking the positive direction and the negative direction of a power supply phase sequence, the phase sequence module protection module is used for cutting off contact between the phase sequence instrument phase checking control module and a power supply in a timing mode, and the phase checking instrument automatic switching control module is used for controlling a switch of the phase sequence instrument phase checking control module to be turned on or turned off. According to the switch control signal conversion terminal, the problems that when an existing switch control signal conversion terminal is used, high-temperature overload is not protected, and electric signal conversion control is single are solved.

Description

Technical Field

[0001] The invention relates to the technical field of synchronous grid connection of a power generation vehicle and line sequence detection of a low-voltage ring closing device, and in particular to a switch control signal conversion terminal. Background Art

[0002] In the power system, the phase difference of three-phase alternating current is called phase sequence. The correctness of phase sequence is crucial to the normal operation of power equipment. At present, low-voltage substation transfer is mainly power generation vehicle transfer and substation low-voltage liaison transfer. Grid-connected synchronization equipment is required to synchronize power to the power grid. The main function of the synchronization equipment is to ensure that the voltage, frequency and phase output of the power generation vehicle match the corresponding parameters of the power grid before grid connection, so as to achieve smooth grid connection and avoid impact on the power grid or damage to equipment. Cable access to the synchronization equipment is an important link in realizing grid connection of the power generation vehicle, and cable access is required to be carried out strictly in accordance with the three-phase line sequence relationship.

[0003] The prior art requires personnel to manually check the phase with a phase check instrument before connecting the low-voltage ring closing device and the low-voltage generator car synchronous grid-connected equipment based on the remote control of the low-voltage cabinet main switch. This cannot solve the problem of short-term power outage operations in the power supply link. In addition, the low-voltage switch cannot be controlled during use and there is no low-voltage switch feedback signal, which often leads to false operation of equipment protection and power supply interruption, thus losing the meaning of no-induction and limiting the large-scale application of low-voltage non-stop power supply operations. To this end, we propose a switch control signal conversion terminal. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a switch control signal conversion terminal, which solves the problem that the existing switch control signal conversion terminal has no protection against high temperature overload and single electrical signal conversion control when in use.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A switch control signal conversion terminal comprises a low-voltage switch, a phase sequence meter phase control module, a phase sequence module protection module, a phase sequence meter automatic switching control module, a terminal fault alarm module, an electric signal manual conversion module, an electric signal automatic conversion module, a terminal light indication module, an intelligent heat dissipation module and a terminal operation status cloud sharing module, wherein the phase sequence meter phase control module is used to calibrate the positive direction and the reverse direction of the power supply phase sequence, the phase sequence module protection module is used to regularly cut off the contact between the phase sequence meter phase control module and the power supply, the phase sequence meter automatic switching control module is used to control the switch of the phase sequence meter phase control module to be turned on or off, the terminal fault alarm module is used to detect whether there is a fault in the terminal, the electric signal manual conversion module is used to manually perform electric signal conversion operations, the electric signal automatic conversion module is used to automatically perform electric signal conversion operations, the terminal light indication module is used to display the terminal signal status, the intelligent heat dissipation module is used to perform intelligent heat dissipation on the terminal, and the terminal operation status cloud sharing module is used to share the operation status of the terminal in real time.

[0007] Preferably, the terminal fault alarm module includes a fault information receiving module, one side of the fault information receiving module is electrically connected to a terminal fault information module via a wire, one side of the terminal fault information module is electrically connected to a terminal fault identification module via a wire, one side of the terminal fault identification module is electrically connected to a fault information transmission module via a wire, one side of the fault information transmission module is electrically connected to a fault display module via a wire, and one side of the fault display module is electrically connected to a buzzer alarm module via a wire.

[0008] Preferably, the manual electric signal conversion module includes an electric signal manual data module, one side of the manual electric signal data module is electrically connected to a manual electric signal identification module via a wire, and one side of the manual electric signal identification module is electrically connected to a manual electric signal adjustment module via a wire.

[0009] Preferably, the electric signal automatic conversion module includes an electric signal automatic data module, one side of the electric signal automatic data module is electrically connected to an electric signal automatic identification module via a wire, and one side of the electric signal automatic identification module is electrically connected to an electric signal automatic adjustment module via a wire.

[0010] Preferably, the terminal light indication module includes a positive phase sequence indicator light, a reverse phase sequence indicator light, a phase line indicator light, a closing indicator light, an opening indicator light, a normal warning light, and a fault indicator light.

[0011] Preferably, the intelligent heat dissipation module includes a semiconductor heat sink module, an intelligent heat dissipation fan module, and an intelligent water-cooling heat dissipation module.

[0012] Preferably, the terminal operation status cloud sharing module includes a WIFI module, one side of the WIFI module is electrically connected to a network connection module through a wire, one side of the network connection module is electrically connected to a terminal status receiving module through a wire, one side of the terminal status receiving module is electrically connected to a terminal status transmission module through a wire, one side of the terminal status transmission module is electrically connected to a mobile phone APP module through a wire, and one side of the mobile phone APP module is electrically connected to a computer terminal module through a wire.

[0013] Preferably, the electric signal manual conversion module and the electric signal automatic conversion module are both used to convert strong electric signals into weak electric signals that can be received by the generator vehicle unit controller and the low-voltage ring closing device.

[0014] In summary, the present invention connects the switch control signal transfer terminal to the existing synchronous equipment or low-voltage loop closing device. It only needs to connect the switch control signal transfer terminal to the communication cable according to the operation requirements, and can directly power on and start the phase sequence meter phase control module of the switch control signal transfer terminal to check the phase sequence, and through the positive phase sequence indicator light and the reverse phase sequence indicator light, the phase line indicator light and the opening and closing status of the low-voltage switch, the phase check result, the cable live condition and the switch status are directly displayed to the operator for confirmation, thereby realizing the line sequence of the cable connected to the synchronous equipment or loop closing device, the phase line live condition and the low voltage The status of the switch is displayed. Before the synchronization equipment or the closing device is connected to the cable, there is no need for the operator to manually check the phase with a handheld phase check instrument. In addition, the automatic switching control module of the phase check instrument built into the switch control signal transfer terminal can turn on or off the phase sequence meter phase control module within the preset time according to the preset time, and switch on and off at a scheduled time without operation, and can protect the internal modules. The strong electric signal can be converted into a weak electric signal through the built-in electric signal conversion module (manual electric signal conversion module or automatic electric signal conversion module) to ensure the normal weak electric signal reception and processing of the synchronization equipment or the closing device.

[0015] The present invention can provide an intelligent heat dissipation protection function for the switch control signal transfer terminal by arranging an intelligent heat dissipation module.

[0016] The present invention can provide a fault alarm function for the switch control signal transfer terminal by setting a terminal fault alarm module.

[0017] The present invention can provide a cloud sharing function for the switch control signal transfer terminal by setting a terminal operation status cloud sharing module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the module structure of the switch control signal conversion terminal of the present invention;

[0019] Figure 2This is a schematic diagram of the structure of the terminal fault alarm module of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the electric signal manual conversion module of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the electric signal automatic conversion module of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the terminal light indication module of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the intelligent heat dissipation module of the present invention;

[0024] Figure 7 It is a structural diagram of the terminal operation status cloud sharing module of the present invention.

[0025] In the figure: 1. Phase sequence meter phase control module; 2. Phase sequence module protection module; 3. Phase meter automatic switching control module; 4. Terminal fault alarm module; 41. Fault information receiving module; 42. Terminal fault information module; 43. Terminal fault identification module; 44. Fault information transmission module; 45. Fault display module; 46. Buzzer alarm module; 5. Electric signal manual conversion module; 51. Electric signal manual data module; 52. Electric signal manual identification module; 53. Electric signal manual adjustment module; 6. Electric signal automatic conversion module; 61. Electric signal automatic data module; 62. Electric signal automatic identification module; 6 3. Automatic adjustment module for electric signals; 7. Terminal lighting indication module; 71. Positive phase sequence indicator light; 72. Reverse phase sequence indicator light; 73. Phase line indicator light; 74. Closing indicator light; 75. Opening indicator light; 76. Normal warning light; 77. Fault indicator light; 8. Intelligent heat dissipation module; 81. Semiconductor heat sink module; 82. Intelligent cooling fan module; 83. Intelligent water cooling module; 9. Terminal operation status cloud sharing module; 91. WIFI module; 92. Network connection module; 93. Terminal status receiving module; 94. Terminal status transmission module; 95. Mobile phone APP module; 96. Computer terminal module. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Reference Figure 1-Figure 7A switch control signal conversion terminal includes a low-voltage switch, a phase sequence meter phase control module 1, a phase sequence module protection module 2, a phase sequence meter automatic switching control module 3, a terminal fault alarm module 4, an electric signal manual conversion module 5, an electric signal automatic conversion module 6, a terminal light indication module 7, an intelligent heat dissipation module 8 and a terminal operation status cloud sharing module 9. The phase sequence meter phase control module 1 is used to calibrate the positive and reverse directions of the power supply phase sequence, the phase sequence module protection module 2 is used to timedly cut off the contact between the phase sequence meter phase control module 1 and the power supply, and the phase sequence meter automatic switching control module 3 is used to control the switch of the phase sequence meter phase control module 1 to be turned on or off.

[0028] The terminal fault alarm module 4 is used to detect whether there is a fault in the terminal. The terminal fault alarm module 4 includes a fault information receiving module 41. One side of the fault information receiving module 41 is electrically connected to a terminal fault information module 42 through a wire. One side of the terminal fault information module 42 is electrically connected to a terminal fault identification module 43 through a wire. One side of the terminal fault identification module 43 is electrically connected to a fault information transmission module 44 through a wire. One side of the fault information transmission module 44 is electrically connected to a fault display module 45 through a wire. One side of the fault display module 45 is electrically connected to a buzzer alarm module 46 through a wire.

[0029] The electric signal manual conversion module 5 is used to manually perform electric signal conversion operations. The electric signal manual conversion module 5 includes an electric signal manual data module 51. One side of the electric signal manual data module 51 is electrically connected to an electric signal manual identification module 52 through a wire. One side of the electric signal manual identification module 52 is electrically connected to an electric signal manual adjustment module 53 through a wire.

[0030] The electric signal automatic conversion module 6 is used to automatically perform electric signal conversion operations. The electric signal automatic conversion module 6 includes an electric signal automatic data module 61. One side of the electric signal automatic data module 61 is electrically connected to an electric signal automatic identification module 62 through a wire. One side of the electric signal automatic identification module 62 is electrically connected to an electric signal automatic adjustment module 63 through a wire.

[0031] The terminal light indication module 7 is used to display the terminal signal status. The terminal light indication module 7 includes a positive phase sequence indicator light 71, a reverse phase sequence indicator light 72, a phase line indicator light 73, a closing indicator light 74, an opening indicator light 75, a normal warning light 76, and a fault indicator light 77. The positive phase sequence indicator light 71 displays a green light when the positive phase sequence is working, the reverse phase sequence indicator light 72 displays a red light when the reverse phase sequence is working, the phase line indicator light 73 displays a yellow light when the phase line is energized, the closing indicator light 74 displays a red light when closing, the opening indicator light 75 displays a red light when opening, the normal warning light 76 displays a red light, and the fault indicator light 77 displays a red light flashing when there is a fault.

[0032] The intelligent heat dissipation module 8 is used to perform intelligent heat dissipation on the terminal. The intelligent heat dissipation module 8 includes a semiconductor heat sink module 81, an intelligent heat dissipation fan module 82, and an intelligent water cooling module 83. When the terminal is running normally, the semiconductor heat sink module 81 dissipates heat for the terminal. When the terminal is heated, the intelligent heat dissipation fan module 82 dissipates heat for the terminal in cooperation with the semiconductor heat sink module 81. When the terminal is at high temperature, the intelligent water cooling module 83 works in cooperation with the semiconductor heat sink module 81 and the intelligent heat dissipation fan module 82. The three effectively dissipate heat for the terminal.

[0033] The terminal operation status cloud sharing module 9 is used to share the transportation status of the terminal in real time. The terminal operation status cloud sharing module 9 includes a WIFI module 91. One side of the WIFI module 91 is electrically connected to a network connection module 92 through a wire, one side of the network connection module 92 is electrically connected to a terminal status receiving module 93 through a wire, one side of the terminal status receiving module 93 is electrically connected to a terminal status transmission module 94 through a wire, one side of the terminal status transmission module 94 is electrically connected to a mobile phone APP module 95 through a wire, and one side of the mobile phone APP module 95 is electrically connected to a computer terminal module 96 through a wire. The terminal status can be monitored in real time using a mobile phone APP or a computer terminal.

[0034] It should be noted that the terminals mentioned in this case are all switch control signal conversion terminals.

[0035] The switch control signal transfer terminal is widely used in low-voltage cabinets that have not yet been pre-installed and modified with control interfaces to realize the synchronous grid-connected function of low-voltage power generation vehicles and the on-site low-voltage ring closing device based on the remote control of the low-voltage cabinet main switch. The rapid access technology is used to temporarily access the low-voltage switch cabinet during the grid-connected operation of the power generation vehicle and the ring closing operation, and the remote control sampling line is used to connect to the power generation vehicle or the low-voltage ring closing device to collect electrical signals.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A switch control signal conversion terminal, comprising a low voltage switch, characterized in that: It also comprises a phase sequence meter phase checking control module (1), wherein the phase sequence meter phase checking control module (1) is used to check the positive direction and the reverse direction of the power supply phase sequence; A phase sequence module protection module (2), wherein the phase sequence module protection module (2) is used to regularly cut off the contact between the phase sequence meter nuclear phase control module (1) and the power supply; A phase detector automatic switching control module (3), the phase detector automatic switching control module (3) is used to control the switch of the phase sequence detector phase control module (1) to be turned on or off; A terminal fault alarm module (4), the terminal fault alarm module (4) is used to detect whether there is a fault in the terminal; An electric signal manual conversion module (5), the electric signal manual conversion module (5) being used to manually perform an electric signal conversion operation; An electric signal automatic conversion module (6), the electric signal automatic conversion module (6) being used to automatically perform an electric signal conversion operation; A terminal light indication module (7), the terminal light indication module (7) being used to display the terminal signal status; An intelligent heat dissipation module (8), the intelligent heat dissipation module (8) being used to perform intelligent heat dissipation on the terminal; A terminal operation status cloud sharing module (9), wherein the terminal operation status cloud sharing module (9) is used to share the operation status of the terminal in real time.

2. A switch control signal conversion terminal according to claim 1, characterized in that: The terminal fault alarm module (4) comprises a fault information receiving module (41), one side of the fault information receiving module (41) is electrically connected to a terminal fault information module (42) via a wire, one side of the terminal fault information module (42) is electrically connected to a terminal fault identification module (43) via a wire, one side of the terminal fault identification module (43) is electrically connected to a fault information transmission module (44) via a wire, one side of the fault information transmission module (44) is electrically connected to a fault display module (45) via a wire, and one side of the fault display module (45) is electrically connected to a buzzer alarm module (46) via a wire.

3. A switch control signal conversion terminal according to claim 1, characterized in that: The electric signal manual conversion module (5) comprises an electric signal manual data module (51), one side of the electric signal manual data module (51) is electrically connected to an electric signal manual identification module (52) via a wire, and one side of the electric signal manual identification module (52) is electrically connected to an electric signal manual adjustment module (53) via a wire.

4. A switch control signal conversion terminal according to claim 1, characterized in that: The electric signal automatic conversion module (6) comprises an electric signal automatic data module (61), one side of the electric signal automatic data module (61) is electrically connected to an electric signal automatic identification module (62) via a wire, and one side of the electric signal automatic identification module (62) is electrically connected to an electric signal automatic adjustment module (63) via a wire.

5. A switch control signal conversion terminal according to claim 1, characterized in that: The terminal light indication module (7) comprises a positive phase sequence indicator light (71), a reverse phase sequence indicator light (72), a phase line indicator light (73), a closing indicator light (74), an opening indicator light (75), a normal warning light (76), and a fault indicator light (77).

6. A switch control signal conversion terminal according to claim 1, characterized in that: The intelligent heat dissipation module (8) comprises a semiconductor heat sink module (81), an intelligent heat dissipation fan module (82), and an intelligent water-cooling heat dissipation module (83).

7. A switch control signal conversion terminal according to claim 1, characterized in that: The terminal operation status cloud sharing module (9) comprises a WIFI module (91), one side of the WIFI module (91) is electrically connected to a network connection module (92) via a wire, one side of the network connection module (92) is electrically connected to a terminal status receiving module (93) via a wire, one side of the terminal status receiving module (93) is electrically connected to a terminal status transmission module (94) via a wire, one side of the terminal status transmission module (94) is electrically connected to a mobile phone APP module (95) via a wire, and one side of the mobile phone APP module (95) is electrically connected to a computer terminal module (96) via a wire.

8. A switch control signal conversion terminal according to claim 1, characterized in that: The electric signal manual conversion module (5) and the electric signal automatic conversion module (6) are both used to convert strong electric signals into weak electric signals that can be received by the generator vehicle unit controller and the low-voltage loop closing device.

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