Communication looped network power supply switching circuit, optical transceiver power supply box, control cabinet and wind turbine generator
By designing a communication ring network power switching circuit and using diode and relay protection modules to switch the power supply path, the problem of communication interruption caused by power failure of wind turbines is solved, ensuring the normal operation of wind turbines and improving the reliability and stability of the system.
Patent Information
- Application Number
- CN202422200010.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-09-09
AI Technical Summary
When a wind turbine loses power, the wind turbines connected to the line lose communication, affecting the normal operation of the wind turbine, resulting in increased costs and reduced efficiency.
A communication ring network power switching circuit is designed, which includes a first power module, a second power module, a diode and an output module. The diode and relay protection module are used to switch the power supply path when a power failure occurs, ensuring that the wind turbine can still communicate in the event of a power outage.
When a wind turbine loses power, the power supply path is switched to prevent the wind turbine from losing communication, ensuring the normal operation of the wind turbine, improving system reliability and stability, and reducing the expansion of equipment failures and power loss.
Smart Images
Figure CN223348418U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wind turbine communication ring network power supply control, in particular to a communication ring network power supply switching circuit, an optical terminal power supply box, a control cabinet and a wind turbine. Background Art
[0002] Wind farm communication networks typically utilize a ring structure. However, due to the complex terrain of wind farms, such as mountains and hills, achieving a complete ring network is difficult. Failure to achieve a complete ring structure can lead to cascading problems when communication is interrupted. Therefore, when designing a wind farm communication network, it is important to consider the terrain and find a suitable solution to ensure stable and reliable communication connections.
[0003] Currently, wind farms generally use fiber optic convergence solutions to build ring networks. However, if a wind turbine loses power and the wind turbines connected to the line lose communication, this can significantly impact the normal operation of the wind turbines and potentially cause losses. These issues lead to increased costs and reduced efficiency. Therefore, finding more cost-effective and efficient solutions is crucial. Utility Model Content
[0004] In response to the deficiencies in the prior art, the utility model provides a communication ring network power switching circuit, an optical terminal power supply box, a control cabinet and a wind turbine generator set, which solves the problem in the prior art that when the wind turbine generator set loses power and the wind turbine carried by the line loses communication, the normal operation of the wind turbine generator set will be greatly affected.
[0005] At least one embodiment of the present utility model provides a communication ring network power switching circuit, comprising: a first power module V1, a second power module V2, a diode D1, and an output module T1, wherein the second power module V2 is configured as a rechargeable power supply;
[0006] The positive terminal of the first power module V1 is connected to the anode terminal of the diode D1, the cathode terminal of the diode D1 is respectively connected to the anode terminal of the output module T1 and the anode terminal of the second power module V2, and the cathode terminal of the first power module V1 is respectively connected to the cathode terminal of the output module T1 and the cathode terminal of the second power module V2.
[0007] The technical solution disclosed by the utility model has at least the following beneficial effects:
[0008] After adopting the above solution, under normal operation, the first power module V1 flows through the diode D1, and simultaneously supplies power to the output module T1 and charges the second power module V2;
[0009] When the first power module V1 fails, the diode D2 can block the connection between the second power module V2 and the first power module V1, preventing the current in the second power module V2 from flowing back to the first power module V1. At this time, the output module T1 can be powered by the second power module V2, ensuring that even if the wind turbine loses power, the wind turbines connected to the line will not lose communication, and the normal operation of the wind turbine will not be affected.
[0010] In a communication ring network power switching circuit provided in one embodiment of the present invention, an undervoltage protection module is also included. The undervoltage protection module is connected to the second power module V2 to cut off the connection between the second power module V2 and the output module T1 when the second power module V2 is lower than a preset voltage.
[0011] The technical solution disclosed by the utility model has at least the following beneficial effects:
[0012] By connecting the second power module V2 to the undervoltage protection module, the connection between the second power module V2 and the output module T1 can be cut off when the second power module V2 is lower than the preset voltage, preventing the second power module V2 from being damaged by low power.
[0013] In a communication ring network power switching circuit provided by one embodiment of the present invention, the undervoltage protection module is an undervoltage relay K1, the anode end of the second power module V2 is connected to the cathode end of the diode D1 through the first switch contact S1 of the undervoltage relay K1, and the action coil of the undervoltage relay K1 is connected in parallel with the second power module V2.
[0014] The technical solution disclosed by the utility model has at least the following beneficial effects:
[0015] Through the above settings, the operating coil of the undervoltage relay K1 can detect the voltage output value of the second power module V2 in real time. When the operating coil of the undervoltage relay K1 detects that the voltage output value of the second power module V2 is lower than the preset value, its first switch contact S1 can be disconnected, thereby cutting off the connection between the second power module V2 and the output module T1, preventing the second power module V2 from being damaged by low power.
[0016] In a communication ring network power switching circuit provided in one embodiment of the present invention, a timeout protection module is also included. The timeout protection module is connected to the second power module V2 to cut off the connection between the second power module V2 and the output module T1 after the second power module V2 supplies power for more than a preset time.
[0017] The technical solution disclosed by the utility model has at least the following beneficial effects:
[0018] By connecting the timeout protection module to the second power supply, the connection between the second power supply module V2 and the output module T1 can be cut off after the second power supply module V2 supplies power for more than a preset time, so as to protect the second power supply module V2 and prevent it from damaging the battery due to long-term power supply.
[0019] In a communication ring network power supply switching circuit provided by one embodiment of the present invention, the timeout protection module includes a relay K3 and a delay relay K2, wherein:
[0020] The actuating coil of the relay K3 is connected in parallel with the first power module V1;
[0021] The anode end of the second power module V2 is connected to the cathode end of the diode D1 through the first switch contact S2 of the time delay relay K2 and the first switch contact S1 of the undervoltage relay K1 in sequence;
[0022] One end of the action coil of the time delay relay K2 is connected to the anode end of the second power supply module V2, and the other end of the action coil of the time delay relay K2 is connected to the first switch contact S1 of the undervoltage relay K1. The switch contact S3 of the relay K3 is interlocked with the action coil of the time delay relay K2 to trigger the time delay relay K2 when the action coil of the relay K3 loses power.
[0023] The technical solution disclosed by the utility model has at least the following beneficial effects:
[0024] By connecting the actuating coil of the relay K3 in parallel to the first power module V1, the time delay relay K2 can be triggered when the first power module V1 loses power. At this time, after the time delay relay K2 is triggered for a preset time, the first switch contact S2 of the time delay relay K2 can be automatically disconnected, thereby cutting off the connection between the second power module V2 and the output module T1, thereby protecting the second power module V2 and preventing it from damaging the battery due to long-term power supply.
[0025] In one embodiment of the present invention, a communication ring network power supply switching circuit is provided, which further includes a diode D2 and an audible and visual alarm L1, wherein:
[0026] The anode end of the second power supply module V2 is also connected to the cathode end of the diode D1 through the anode end of the diode D2, the cathode end of the diode D2, the sound and light alarm L1, the second switch contact S2' of the delay relay K2 and the second switch contact S1' of the undervoltage relay K1.
[0027] The technical solution disclosed by the utility model has at least the following beneficial effects:
[0028] When the first power module V1 is operating normally, the diode D2 can cut off the conduction of the line, so that the sound and light alarm L1 does not work. When the first power module V1 loses power, the second power module V2 intervenes to supply power to the output module T1. At this time, the diode D2 is turned on, triggering the sound and light alarm L1, thereby reminding relevant personnel to investigate and repair the cause of the power failure of the first power module V1 here.
[0029] In one embodiment of the present invention, a communication ring network power supply switching circuit is provided, which further includes a main switch S4, wherein:
[0030] The anode end of the second power module V2 is connected to the cathode end of the diode D1 through the first switch contact S2 of the time delay relay K2, the first switch contact S1 of the undervoltage relay K1 and the main switch S4 in sequence;
[0031] The anode end of the second power supply module V2 is also connected to the cathode end of the diode D1 through the anode end of the diode D2, the cathode end of the diode D2, the sound and light alarm L1, the second switch contact S2' of the delay relay K2, the second switch contact S1' of the undervoltage relay K1 and the main switch S4.
[0032] The technical solution disclosed by the utility model has at least the following beneficial effects:
[0033] The main switch S4 can facilitate the staff to cut off the connection between the first power module V1, the output module T1 and the second power module V2.
[0034] The utility model also provides an optical terminal power supply box, comprising a power supply box shell, wherein the power supply box shell is provided with a communication ring network power supply switching circuit as described above.
[0035] The present invention also provides a control cabinet, comprising a control cabinet body and an optical terminal power supply box as described above, wherein the power output end of the control cabinet body is connected to the input end of the first power module V1.
[0036] The present invention also provides a wind turbine generator set, comprising a wind turbine generator set body, a wind farm communication network configured on the wind turbine generator set body, and a control cabinet as described above, wherein the wind farm communication network is connected to the output module T1 to provide power through the output module T1. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] Figure 1 This is a schematic diagram of the structure of a communication ring network power supply switching circuit of the utility model;
[0038] Figure 2This is a specific circuit diagram of a communication ring network power supply switching circuit of the utility model. DETAILED DESCRIPTION
[0039] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0040] This utility model aims to design a communication ring network power switching circuit to ensure that the optical terminal in the control cabinet can continue to supply power after the wind turbine loses power, thus preventing the loss of communication between the wind turbines and the circuit. This circuit can effectively solve the communication failures and downtime problems that may occur in wind power generation systems, improving the reliability and stability of the system.
[0041] Based on this, please refer to Figure 1 As shown, the utility model provides a communication ring network power switching circuit, comprising: a first power module V1, a second power module V2, a diode D1 and an output module T1, wherein the second power module V2 is configured as a rechargeable power supply;
[0042] The positive terminal of the first power module V1 is connected to the anode terminal of the diode D1, the cathode terminal of the diode D1 is respectively connected to the anode terminal of the output module T1 and the anode terminal of the second power module V2, and the cathode terminal of the first power module V1 is respectively connected to the cathode terminal of the output module T1 and the cathode terminal of the second power module V2.
[0043] After adopting the above solution, under normal operation, the first power module V1 flows through the diode D1, and simultaneously supplies power to the output module T1 and charges the second power module V2;
[0044] When the first power module V1 fails, the diode D2 can block the connection between the second power module V2 and the first power module V1, preventing the current in the second power module V2 from flowing back to the first power module V1. At this time, the output module T1 can be powered by the second power module V2, ensuring that even if the wind turbine loses power, the wind turbines connected to the line will not lose communication, and the normal operation of the wind turbine will not be affected.
[0045] Specifically, please refer to Figure 2 As shown, the circuit further includes an undervoltage protection module, which is connected to the second power module V2 to cut off the connection between the second power module V2 and the output module T1 when the second power module V2 is lower than a preset voltage.
[0046] By connecting the second power module V2 to the undervoltage protection module, the connection between the second power module V2 and the output module T1 can be cut off when the second power module V2 is lower than the preset voltage, thereby preventing the second power module V2 from being damaged by excessive low power. In this embodiment, the second power module is composed of two 12V lithium batteries connected in series, and the preset voltage is set to 16V.
[0047] Specifically, in this circuit, the undervoltage protection module is an undervoltage relay K1, the anode end of the second power module V2 is connected to the cathode end of the diode D1 through the first switch contact S1 of the undervoltage relay K1, and the action coil of the undervoltage relay K1 is connected in parallel with the second power module V2.
[0048] Through the above settings, the operating coil of the undervoltage relay K1 can detect the voltage output value of the second power module V2 in real time. When the operating coil of the undervoltage relay K1 detects that the voltage output value of the second power module V2 is lower than the preset value, its first switch contact S1 can be disconnected, thereby cutting off the connection between the second power module V2 and the output module T1, preventing the second power module V2 from being damaged by low power.
[0049] Specifically, the circuit also includes a timeout protection module, which is connected to the second power supply module V2 to cut off the connection between the second power supply module V2 and the output module T1 after the second power supply module V2 supplies power for more than a preset time. In this embodiment, the preset time is 18 hours.
[0050] By connecting the timeout protection module to the second power supply, the connection between the second power supply module V2 and the output module T1 can be cut off after the second power supply module V2 supplies power for more than a preset time, so as to protect the second power supply module V2 and prevent it from damaging the battery due to long-term power supply.
[0051] Specifically, in this circuit, the timeout protection module includes a relay K3 and a delay relay K2, wherein:
[0052] The actuating coil of the relay K3 is connected in parallel with the first power module V1;
[0053] The anode end of the second power module V2 is connected to the cathode end of the diode D1 through the first switch contact S2 of the time delay relay K2 and the first switch contact S1 of the undervoltage relay K1 in sequence;
[0054] One end of the action coil of the time delay relay K2 is connected to the anode end of the second power supply module V2, and the other end of the action coil of the time delay relay K2 is connected to the first switch contact S1 of the undervoltage relay K1. The switch contact S3 of the relay K3 is interlocked with the action coil of the time delay relay K2 to trigger the time delay relay K2 when the action coil of the relay K3 loses power.
[0055] By connecting the actuating coil of the relay K3 in parallel to the first power module V1, the time delay relay K2 can be triggered when the first power module V1 loses power. At this time, after the time delay relay K2 is triggered for a preset time, the first switch contact S2 of the time delay relay K2 can be automatically disconnected, thereby cutting off the connection between the second power module V2 and the output module T1, thereby protecting the second power module V2 and preventing it from damaging the battery due to long-term power supply.
[0056] Specifically, this circuit also includes a diode D2 and an audible and visual alarm L1, wherein:
[0057] The anode end of the second power supply module V2 is also connected to the cathode end of the diode D1 through the anode end of the diode D2, the cathode end of the diode D2, the sound and light alarm L1, the second switch contact S2' of the delay relay K2 and the second switch contact S1' of the undervoltage relay K1.
[0058] When the first power module V1 is operating normally, the diode D2 can cut off the conduction of the line, so that the sound and light alarm L1 does not work. When the first power module V1 loses power, the second power module V2 intervenes to supply power to the output module T1. At this time, the diode D2 is turned on, triggering the sound and light alarm L1, thereby reminding relevant personnel to investigate and repair the cause of the power failure of the first power module V1 here.
[0059] Specifically, the circuit further includes a main switch S4, wherein:
[0060] The anode end of the second power module V2 is connected to the cathode end of the diode D1 through the first switch contact S2 of the time delay relay K2, the first switch contact S1 of the undervoltage relay K1 and the main switch S4 in sequence;
[0061] The anode end of the second power supply module V2 is also connected to the cathode end of the diode D1 through the anode end of the diode D2, the cathode end of the diode D2, the sound and light alarm L1, the second switch contact S2' of the delay relay K2, the second switch contact S1' of the undervoltage relay K1 and the main switch S4.
[0062] The main switch S4 can facilitate the staff to cut off the connection between the first power module V1, the output module T1 and the second power module V2.
[0063] During normal operation, the first power module V1 charges the second power module V2. After the power grid is cut off, due to the limitation of diode D1, relay K3 loses power at the same time, triggering the delay relay K2, and disconnecting the power supply of the second power module V2 after 18 hours; when the power grid is cut off and the second power module V2 starts to supply power, the sound and light alarm L1, which had previously limited the current due to diode D2, is energized, triggering the power grid power off alarm; when the power supply of the second power module V2 causes the voltage to drop below 16V, the undervoltage relay K1 is triggered, and the lithium battery power supply is disconnected from the perspective of protecting the power supply. If the lithium battery power supply exceeds 18 hours, the delay relay K2 can trigger a power off, which also plays a role in protecting the power supply.
[0064] 1. After the installation of this circuit is completed, it can effectively realize the function of the communication ring network of this type of fan.
[0065] 2. Improve the operational stability of wind farms, prevent equipment failures from expanding, and reduce the amount of electricity lost due to equipment failures.
[0066] The utility model also provides an optical terminal power supply box, comprising a power supply box shell, wherein the power supply box shell is provided with a communication ring network power supply switching circuit as described above.
[0067] After the optical transceiver in the fan control cabinet is powered off, this optical transceiver power supply box is installed on the power supply side. To ensure easy assembly and disassembly, this utility model is designed as an integrated unit, integrating the utility model into a power supply box. By installing a small power supply box, a fan ring network can be formed and power can be provided to communication equipment when the fan control cabinet loses power.
[0068] The present invention also provides a control cabinet, comprising a control cabinet body and an optical terminal power supply box as described above, wherein the power output end of the control cabinet body is connected to the input end of the first power module V1.
[0069] The present invention also provides a wind turbine generator set, comprising a wind turbine generator set body, a wind farm communication network configured on the wind turbine generator set body, and a control cabinet as described above, wherein the wind farm communication network is connected to the output module T1 to provide power through the output module T1.
[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.
[0071] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A communication ring network power supply switching circuit, characterized in that: include: A first power module V1, a second power module V2, a diode D1, an undervoltage protection module, a timeout protection module, and an output module T1, wherein the second power module V2 is configured as a rechargeable power supply; The positive terminal of the first power module V1 is connected to the anode terminal of the diode D1, the cathode terminal of the diode D1 is connected to the anode terminal of the output module T1 and the anode terminal of the second power module V2, and the cathode terminal of the first power module V1 is connected to the cathode terminal of the output module T1 and the cathode terminal of the second power module V2; The undervoltage protection module is connected to the second power module V2 to cut off the connection between the second power module V2 and the output module T1 when the voltage of the second power module V2 is lower than a preset voltage; The timeout protection module is connected to the second power module V2 to cut off the connection between the second power module V2 and the output module T1 after the second power module V2 supplies power for more than a preset time.
2. A communication ring network power switching circuit according to claim 1, characterized in that: The undervoltage protection module is an undervoltage relay K1. The anode end of the second power module V2 is connected to the cathode end of the diode D1 through the first switch contact S1 of the undervoltage relay K1. The action coil of the undervoltage relay K1 is connected in parallel with the second power module V2.
3. A communication ring network power supply switching circuit according to claim 2, characterized in that: The timeout protection module includes a relay K3 and a delay relay K2, wherein: The actuating coil of the relay K3 is connected in parallel with the first power module V1; The anode end of the second power module V2 is connected to the cathode end of the diode D1 through the first switch contact S2 of the time delay relay K2 and the first switch contact S1 of the undervoltage relay K1 in sequence; One end of the action coil of the time delay relay K2 is connected to the anode end of the second power supply module V2, and the other end of the action coil of the time delay relay K2 is connected to the first switch contact S1 of the undervoltage relay K1. The switch contact S3 of the relay K3 is interlocked with the action coil of the time delay relay K2 to trigger the time delay relay K2 when the action coil of the relay K3 loses power.
4. A communication ring network power supply switching circuit according to claim 3, characterized in that: It also includes a diode D2 and an audible and visual alarm L1, wherein: The anode end of the second power supply module V2 is also connected to the cathode end of the diode D1 through the anode end of the diode D2, the cathode end of the diode D2, the sound and light alarm L1, the second switch contact S2' of the delay relay K2 and the second switch contact S1' of the undervoltage relay K1.
5. A communication ring network power supply switching circuit according to claim 4, characterized in that: It also includes a main switch S4, wherein The anode end of the second power module V2 is connected to the cathode end of the diode D1 through the first switch contact S2 of the time delay relay K2, the first switch contact S1 of the undervoltage relay K1 and the main switch S4 in sequence; The anode end of the second power supply module V2 is also connected to the cathode end of the diode D1 through the anode end of the diode D2, the cathode end of the diode D2, the sound and light alarm L1, the second switch contact S2' of the delay relay K2, the second switch contact S1' of the undervoltage relay K1 and the main switch S4.
6. An optical terminal power supply box, characterized in that: It comprises a power supply box shell, in which a communication ring network power supply switching circuit as claimed in any one of claims 1 to 5 is arranged.
7. A control cabinet, characterized in that: It comprises a control cabinet body and an optical terminal power supply box as claimed in claim 6, wherein the power output end of the control cabinet body is connected to the input end of the first power module V1.
8. A wind turbine generator system, characterized in that: It comprises a wind turbine body, a wind farm communication network configured on the wind turbine body, and a control cabinet according to claim 7, wherein the wind farm communication network is connected to the output module T1 to provide power through the output module T1.