CN213517932U - Working mode switching device of valve control equipment of direct-current transmission converter valve - Google Patents
Working mode switching device of valve control equipment of direct-current transmission converter valve Download PDFInfo
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- CN213517932U CN213517932U CN202022322977.9U CN202022322977U CN213517932U CN 213517932 U CN213517932 U CN 213517932U CN 202022322977 U CN202022322977 U CN 202022322977U CN 213517932 U CN213517932 U CN 213517932U
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Abstract
The utility model provides a direct current transmission converter valve accuse equipment mode auto-change over device, includes casing, control switch unit, power supply unit, signal interface unit and pilot lamp unit, control switch unit, signal interface unit and pilot lamp unit all are located on the casing, the control switch unit includes a plurality of control switch, the signal interface unit contain with a plurality of signal interface of control switch one-to-one, control switch connects power supply unit and corresponding signal interface, the pilot lamp unit contain with a plurality of pilot lamps of a plurality of control switch one-to-one, the pilot lamp is used for brightening when the control switch that corresponds switches on, the output of a plurality of signal interface is used for being connected with the signal input end one-to-one of converter valve accuse equipment. The device can realize the thyristor-level trigger test of the converter valve under the pole control off-line state, and has the advantages of safe use, portable movement, high integration degree and simple and convenient operation.
Description
Technical Field
The utility model relates to an extra-high voltage direct current transmission technical field, concretely relates to direct current transmission converter valve accuse equipment mode switching device.
Background
The ultra-high voltage direct current transmission technology is a technology for transmitting power by adopting direct current voltage. Direct current transmission is a form of extra-high voltage transmission, and is an important means for solving the problems of high voltage, large capacity, long-distance transmission and power grid interconnection at present. With the expanding demand of power systems and the continuous development of power electronic technology, the ultra-high voltage direct current transmission technology is mature day by day, the converter station is used as a tap for ultra-high voltage direct current transmission, the requirement on reliability is very high, and particularly, a core element converter valve of the converter station is assembled by thousands of element components, the structure is complex, and the installation difficulty is high. The thyristor is one of important components of the converter valve and plays a crucial role. Therefore, in the installation and maintenance of the converter valve, a thyristor-level triggering test is particularly important, the thyristor-level triggering test is usually implemented by using converter valve control equipment to trigger a thyristor according to a received control signal issued by a pole control system, and the signal issued by the pole control system comprises an active signal, a standby signal, a charging signal, an unlocking signal, a first triggering control signal, a second triggering control signal and the like. The existing problems of the prior thyristor level trigger test are as follows: 1. the pole control system is required to be reset in a program, a control signal is sent to the converter valve control equipment, and after the test is finished, if the state is not recovered, the system is switched or tripped; 2. the converter valve equipment and the pole control system belong to different manufacturers for material supply, and the converter valve equipment and the pole control system need to be coordinated and communicated, so that the working efficiency is reduced; 3. when the two are matched for testing, only the tested thyristor level is electrified, and the other thyristor levels can be reported to the background as a fault thyristor event, so that the background message inspection is inconvenient.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
The utility model aims at providing a DC transmission converter valve accuse equipment mode auto-change over device, simulation utmost point accuse system issues control command to converter valve accuse device, can realize converter valve thyristor level trigger test under utmost point accuse off-line state, the device safe in utilization, portable removal, high integration, easy and simple to handle.
(II) technical scheme
In order to solve the above problems, a first aspect of the present invention provides a switching device for operating modes of a valve control apparatus of a dc power transmission converter valve, comprising a housing, a control switch unit, a power supply unit, a signal interface unit and an indicator light unit, the control switch unit, the signal interface unit and the indicator light unit are all positioned on the shell, the control switch unit comprises a plurality of control switches, the signal interface unit comprises a plurality of signal interfaces which are in one-to-one correspondence with the control switches, the control switches are connected with the power supply unit and the corresponding signal interfaces, the indicator light unit comprises a plurality of indicator lights which are in one-to-one correspondence with the plurality of control switches, the indicator lights are used for lighting when the corresponding control switches are conducted, and the output ends of the plurality of signal interfaces are used for being correspondingly connected with the signal input ends of the converter valve control equipment one by one.
Specifically, a transparent cover plate is arranged on the shell.
Specifically, the signal interface unit further comprises a power interface, the output end of the power supply unit is connected with the power interface, the indicator light unit is further provided with a power indicator light, and the power indicator light is used for indicating whether the device supplies power or not.
Specifically, control switch unit and pilot lamp unit are located the first face of casing, signal interface unit is located the second face that the back of the body with the first face mutually, each control switch in the control switch unit is a row and sets up, each pilot lamp in the pilot lamp unit sets up side by side with the switch unit that corresponds.
Further, the operating mode switching device of the valve control equipment of the direct-current transmission converter valve further comprises a programmable chip, the control switch unit comprises three first control switches and two second control switches, the first control switches are directly connected with the power supply unit and the corresponding signal interfaces, one end of each second control switch is connected with the power supply unit, the other end of each second control switch is connected with the corresponding signal interface through the programmable chip, and the programmable chip is used for converting an electric signal input after the second control switches are switched on into a preset control signal.
Further, the operating mode switching device of the direct-current transmission converter valve control equipment further comprises an operating mode quick setting switch, and the operating mode quick setting switch is used for respectively connecting the plurality of signal interfaces with the power supply unit.
Furthermore, the shell is also provided with an interlocking indicator light connected with the working mode shortcut setting switch.
Furthermore, the control switch unit further comprises a test mode switch, the signal interface unit is further provided with a signal interface corresponding to the test mode switch, and the test mode switch is connected with the power supply unit and the corresponding signal interface.
Further, the indicator light unit further includes an indicator light corresponding to the test mode switch.
Further, the operating mode switching device for the direct-current transmission converter valve control equipment further comprises a signal connecting line, the input end of the signal connecting line is connected with the output end of the signal interface unit, and the output end of the signal connecting line is used for being connected with the signal input end of the converter valve control equipment.
Specifically, the shell and the cover plate are made of plastic materials.
(III) advantageous effects
The above technical scheme of the utility model has following profitable technological effect:
the utility model provides a direct current transmission converter valve accuse equipment mode auto-change over device simulates utmost point accuse system and issues control command to converter valve accuse device, realizes converter valve thyristor level trigger test under utmost point accuse off-line state, and the device is safe in utilization, portable removal, high integration degree, easy and simple to handle.
Drawings
Fig. 1 is a schematic front view of the working mode switching device of the valve control equipment for the direct-current transmission converter valve, provided by the utility model, after a cover plate is opened;
fig. 2 is a schematic rear view of an open cover plate of a valve control device of a direct-current transmission converter valve provided by the present invention;
fig. 3 is a schematic diagram of connection relationship between units of the valve control device for the direct-current transmission converter valve according to the present invention;
fig. 4 is a schematic diagram of a signal connection line used by the signal interface of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Referring to fig. 1 to 3, the present invention provides a dc power transmission converter valve control equipment operating mode switching device, including a casing 1, a control switch unit, a power supply unit, a signal interface unit 6 and an indicator light unit, as shown in fig. 1 and 2, the casing 1 in this embodiment is a cube structure, the control switch unit and the signal interface unit 6 are respectively located on the upper and lower surfaces of the casing 1, the indicator light unit and the control switch unit are disposed on the same surface of the casing, each control switch in the control switch unit is disposed in a row, each indicator light in the indicator light unit and the corresponding switch unit are disposed side by side, the control switch unit includes a plurality of control switches, the signal interface unit includes a plurality of signal interfaces corresponding to the control switches one by one, the control switches are connected to the power supply unit and the corresponding signal interfaces, the power supply unit supplies power to the corresponding signal interface when the control switches are switched on, the corresponding signal interface is powered off when the control switches are switched off, wherein five control switches can be respectively used for simulating control signals such as an active signal, a charging signal and an unlocking signal issued by a polar control system, the indicator lamp unit comprises a plurality of indicator lamps in one-to-one correspondence with the control switches, the indicator lamps are used for turning on and turning off when the corresponding control switches are switched on, and the output ends of the signal interfaces are used for being in one-to-one correspondence with the signal input ends of the converter valve control equipment.
Specifically, the utility model discloses a control signal that the control signal unanimous that control signal issued with utmost point accuse system simulates utmost point accuse system and issues is provided, for example, when initiative signal, the signal of charging, the unblock signal that utmost point accuse system issued are 1MHz, then the control switch unit that corresponds the switch and dials to "1" signal interface switch-on power supply unit output high level, and when control signal was 10kHz, then the control switch unit that corresponds the switch and dials to "0" output low level.
Optionally, the power supply output voltage of the power supply unit is 3-24V.
Specifically, transparent cover plates are arranged on the upper surface and the lower surface of the shell 1, and the states of the switches can be protected by the cover plates to prevent misoperation.
Further, referring to fig. 3, the signal interface unit further includes a power interface, the output end of the power supply unit is connected to the power interface, referring to fig. 1, the indicator light unit is further provided with a power indicator light 2, and the power indicator light 2 is used for indicating whether the device supplies power so as to facilitate the subsequent operation of the working personnel.
As shown in fig. 2, in a specific embodiment, the control switch unit is provided with an active signal control switch 16, a charging signal control switch 17, an unlocking signal control switch 19, a first trigger control signal control switch 10 and a second trigger control signal control switch 7. The switch is preferably a dial switch, and is valid when the dial is 1 and invalid when the dial is 0. Correspondingly, the signal interface unit 6 includes an active signal interface, a charging signal interface, an unlocking signal interface, a first trigger control signal interface, and a second trigger control signal interface. Each of the above switches is provided with a corresponding switch indicator, as shown in fig. 1 and 2, specifically, an active signal control switch indicator 9, a charging signal control switch indicator 11, an unlocking signal control switch indicator 12, a first trigger control switch indicator 13, and a second trigger control switch indicator 14. The plurality of status indicator lights display the corresponding operation results. Referring to fig. 3, the active signal control switch 16, the charging signal control switch 17, and the unlocking signal control switch 19 are all first control switches, the first control switches are directly connected to the power supply unit and the corresponding signal interfaces, the first trigger control signal control switch 10 and the second trigger control signal control switch 7 are all second control switches, one end of each second control switch is connected to the power supply unit, the other end of each second control switch is connected to the corresponding signal interface through the programmable chip, and the programmable chip is used for converting an electric signal input after the second control switch is turned on into a preset control signal. Namely, the first trigger control signal control switch 10 and the second trigger control signal control switch 7 are respectively connected with the input end of the programmable chip, the programmable chip converts the electric signals input after the first trigger control signal control switch 10 and the second trigger control signal control switch 7 are switched on according to the preset logic to obtain the corresponding first trigger control signal and second trigger control signal, and the output end of the programmable chip sends the first trigger control signal and the second trigger control signal to the corresponding signal interfaces respectively. For example, the period of the first trigger control signal and the second trigger control signal sent by the pole control system is 20ms, and the first trigger control signal and the second trigger control signal are composed of a 1MHz signal of 1/3 and a low level signal of 2/3, and when the corresponding switch is turned to "1", the programmable chip outputs a high level signal of 1/3 and a low level signal of 2/3 according to the preset logic period of 20 ms. The signal interface unit not only provides a power input interface, but also provides a communication interface, and the communication performance and the personal safety are both considered.
Further, as shown in fig. 1, the operating mode switching device of the valve control apparatus for the dc power transmission converter valve further includes an operating mode shortcut setting switch 4, where the operating mode shortcut setting switch 4 connects the plurality of signal interfaces with the power supply unit, respectively, and is used for simultaneously connecting the power supply unit and each signal interface when the operating mode shortcut setting switch is turned on, so as to disable each control switch, as shown in fig. 3, where the connection between the plurality of signal interfaces and the power supply unit may be a direct connection or a connection through a programmable chip; correspondingly, the shell is further provided with an interlocking indicator lamp 3 electrically connected with the working mode quick setting switch, and the interlocking indicator lamp is used for lighting when the working mode quick setting switch is effective.
Further, as shown in fig. 2, the control switch unit further includes a test mode switch 15, the signal interface unit is further provided with a signal interface corresponding to the test mode switch, and the test mode switch is connected to the power supply unit and the corresponding signal interface and is used for issuing an instruction for making the valve control device enter the test operation mode. Further, the indicator light unit further includes an indicator light corresponding to the test mode switch, i.e., the test mode switch indicator light 8 shown in fig. 2.
Further, as shown in fig. 4, the device for switching the operating mode of the valve control equipment of the direct current transmission converter valve further comprises a signal connection line 21, an input end of the signal connection line is connected with an output end of the signal interface unit 6, and an output end of the signal connection line is used for being connected with a signal input end of the valve control equipment of the converter valve. The signal interface unit 6 is connected with the converter valve control equipment by using a signal connecting wire 21, and the converter valve control equipment has power supply input and communication functions, and is convenient and simple.
Specifically, the housing 1 and the cover plate are made of plastic.
The workflow of the apparatus provided in this embodiment: the device can simulate a control signal sent by the pole control system to converter valve control equipment under the offline condition of the pole control system, and performs a thyristor-level trigger test on the converter valve. During testing, firstly, the converter valve control equipment is correctly operated, and then the device is correctly connected to a communication interface cabinet of the converter valve control equipment through a signal connecting line; and the green of the equipment power indicator light is normal, otherwise, the equipment is considered to be in failure, and the equipment is stopped to be used. And in the first step, a signal loop test is carried out, the test mode switch 15, the active signal control switch 16, the charging signal control switch 18, the unlocking signal control switch 19, the first trigger control signal control switch 20 and the second trigger control signal control switch 7 are respectively and sequentially toggled to be 1, the green corresponding to the state indicator lamp is normal in loop, the converter valve control equipment can normally receive the control signal, otherwise, the converter valve control equipment cannot normally receive the signal and stops using the converter valve. And in the second step, the working mode is quickly set to be switched to 1, the interlocking indicator lamp is lightened, the switch in the control switch unit cannot control the equipment at the moment, the corresponding status indicator lamp is lightened after the setting is successful, and the thyristor-level triggering test of the converter valve can be carried out at the moment. And after the test is finished, the connection between the device and the valve control unit of the converter valve is disconnected, so that the converter valve control equipment continues to execute the instruction issued by the pole control system. When any switch in the control switch unit is turned to 1, the valve control equipment of the converter valve does not respond to the instruction issued by the pole changing control system any more; when all the switches are set to 0, the converter valve control equipment responds to the command issued by the pole control system again.
The utility model provides a valve accuse test mode auto-change over device is equipped with the transparent cover, after the mode setting is accomplished, covers apron protection switch state, avoids personnel's maloperation, leads to experimental failure. The signal interface is arranged, 5V power supply can be directly provided by the converter valve control equipment case, the contact voltage is reduced, and the safety factor is increased. Establish that the mode swiftly sets up occasionally the switch interlocking pilot lamp, avoid a plurality of equipment to converter valve control device transmission signal simultaneously, lead to the test mode incorrect, experimental unable correct going on. The test mode switch is arranged, so that when the converter valve control equipment is in a test running mode, the failure state of the thyristor is subjected to inversion processing, and the inspection of a background and a screen cabinet is facilitated, so that the misoperation of personnel can be reduced, the efficiency can be improved, and the safety of operation is further enhanced.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. The working mode switching device is characterized by comprising a shell, a control switch unit, a power supply unit, a signal interface unit and an indicator light unit, wherein the control switch unit, the signal interface unit and the indicator light unit are all located on the shell, the control switch unit comprises a plurality of control switches, the signal interface unit comprises a plurality of signal interfaces in one-to-one correspondence with the control switches, the control switches are connected with the power supply unit and the corresponding signal interfaces, the indicator light unit comprises a plurality of indicator lights in one-to-one correspondence with the control switches, the indicator lights are used for being turned on when the corresponding control switches are turned on, and output ends of the signal interfaces are used for being in one-to-one correspondence with signal input ends of converter valve control equipment.
2. The operating mode switching device of the valve control equipment of the direct-current transmission converter valve according to claim 1, wherein a transparent cover plate is arranged on the shell.
3. The device for switching the working mode of the valve control equipment of the direct-current transmission converter valve according to claim 1, wherein the signal interface unit further comprises a power interface, the output end of the power supply unit is connected with the power interface, and the indicator lamp unit is further provided with a power indicator lamp for indicating whether the device supplies power or not.
4. The device for switching the working mode of the valve control equipment of the direct-current transmission converter valve according to claim 1, wherein the control switch unit and the indicator light unit are located on a first surface of the casing, the signal interface unit is located on a second surface of the casing, the second surface being opposite to the first surface, the control switches in the control switch unit are arranged in a column, and the indicator lights in the indicator light unit are arranged in parallel with the corresponding switch units.
5. The device for switching the working mode of the valve control equipment of the direct-current transmission converter valve according to claim 1, further comprising a programmable chip, wherein the control switch unit comprises three first control switches and two second control switches, the first control switches are directly connected with the power supply unit and the corresponding signal interfaces, one end of each second control switch is connected with the power supply unit, the other end of each second control switch is connected with the corresponding signal interface through the programmable chip, and the programmable chip is used for converting an electric signal input after the second control switches are turned on into a preset control signal.
6. The device for switching the working mode of the valve control equipment of the direct-current transmission converter valve according to claim 1 or 5, further comprising a working mode quick setting switch, wherein the working mode quick setting switch is used for respectively connecting the plurality of signal interfaces with a power supply unit, and the shell is further provided with an interlocking indicator lamp connected with the working mode quick setting switch.
7. The device for switching the working mode of the valve control equipment of the direct-current transmission converter valve according to claim 1, wherein the control switch unit further comprises a test mode switch, the signal interface unit is further provided with a signal interface corresponding to the test mode switch, and the test mode switch is connected with the power supply unit and the corresponding signal interface.
8. The device for switching the working mode of the valve control equipment of the direct-current transmission converter valve according to claim 1, wherein the indicator lamp unit further comprises an indicator lamp corresponding to a test mode switch.
9. The operating mode switching device of the direct-current transmission converter valve control equipment of claim 1, further comprising a signal connecting line, wherein an input end of the signal connecting line is connected with an output end of the signal interface unit, and an output end of the signal connecting line is used for being connected with a signal input end of the converter valve control equipment.
10. The device for switching the working mode of the valve control equipment of the direct-current transmission converter valve according to claim 2, wherein the shell and the cover plate are both made of plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022322977.9U CN213517932U (en) | 2020-10-16 | 2020-10-16 | Working mode switching device of valve control equipment of direct-current transmission converter valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022322977.9U CN213517932U (en) | 2020-10-16 | 2020-10-16 | Working mode switching device of valve control equipment of direct-current transmission converter valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213517932U true CN213517932U (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022322977.9U Active CN213517932U (en) | 2020-10-16 | 2020-10-16 | Working mode switching device of valve control equipment of direct-current transmission converter valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213517932U (en) |
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2020
- 2020-10-16 CN CN202022322977.9U patent/CN213517932U/en active Active
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