Self-starting ground wire ice melting tower side terminal power supply activation system

Abstract

The utility model relates to the technical field of ground wire ice melting, and discloses a self-starting ground wire ice melting tower side terminal power supply activation system, which comprises an energy storage battery, an activation resistor, a solid-state relay, a photovoltaic controller, a direct current circuit breaker, a DC-DC step-down circuit, an MCU circuit, an activation control circuit, a fan control circuit and a fan, the energy storage battery, the activation resistor, the solid-state relay, the photovoltaic controller and the direct-current circuit breaker are sequentially connected in series through wires to form an activation loop; an output interface of the photovoltaic controller is electrically connected with the DC-DC step-down circuit, the DC-DC step-down circuit is electrically connected with the MCU circuit, the two ends of the MCU circuit are electrically connected with the activation control circuit and the fan control circuit respectively, the activation control circuit is connected with a control unit of the solid-state relay through a secondary connecting line, and the fan control circuit is connected with the control unit of the solid-state relay through a secondary connecting line. And the fan control circuit is electrically connected with the fan. The system can select proper time to discharge the battery according to the current operation state of the power supply system, so that the battery can be charged and discharged normally and circularly, and the service life of the tower side terminal power supply module is maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of ground wire deicing, in particular to a self-starting terminal power activation system for ground wire deicing towers. Background Technique

[0002] The terminal equipment on the side of the ground wire deicing tower includes an automatic wiring device for ground wire deicing, an automatic phase selection switch, an automatic earthing switch, a state monitoring device, etc. In the past, the operation of the above devices required manual operation with a power supply carried to the tower. Since the remote operation of ground wire deicing wiring was implemented, the actions of the above devices can be executed through a remote control platform in a substation or a control center, and a complete set of renewable power systems need to be arranged at the iron tower site to provide continuous energy for the operation of the terminal equipment.

[0003] Since the use of the terminal equipment on the side of the ground wire deicing tower is generally concentrated in winter, when designing, the capacity configuration of the renewable power system will be comprehensively considered in combination with the local solar radiation situation and the maximum utilization rate during the ice period. Therefore, the power consumption of this power system is relatively concentrated in winter, and it basically maintains the communication function in other seasons with extremely low energy consumption. This special way of using the power system is extremely likely to cause overcharging of the battery in seasons other than winter, seriously affecting the service life of the battery. Especially in the high-temperature summer season, continuous overcharging of the battery is very likely to cause spontaneous combustion, resulting in equipment damage or personal accidents. Content of the Utility Model

[0004] (1) Technical Problem to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a self-starting terminal power activation system for ground wire deicing towers. This system can select an appropriate time to discharge the battery according to the current operating state of the power system, enabling the battery to charge and discharge normally in a cycle, maintaining the service life of the terminal power module on the tower side, and solving the technical problem that the power system in the terminal equipment on the side of the ground wire deicing tower is overcharged in seasons other than winter, seriously affecting the service life of the battery.

[0006] (2) Technical Solution

[0007] To achieve the above object, the present utility model provides the following technical solution: A self-starting ground wire ice melting tower side terminal power activation system, which includes a storage battery, an activation resistor, a solid state relay, a photovoltaic controller, a DC circuit breaker, a DC-DC buck circuit, an MCU circuit, an activation control circuit, a fan control circuit, and a fan; the storage battery, the activation resistor, the solid state relay, the photovoltaic controller, and the DC circuit breaker are sequentially connected in series by wires to form an activation loop; the output interface of the photovoltaic controller is electrically connected to the DC-DC buck circuit, the DC-DC buck circuit is electrically connected to the MCU circuit, both ends of the MCU circuit are respectively electrically connected to the activation control circuit and the fan control circuit, the activation control circuit is connected to the control unit of the solid state relay through a secondary connection wire, and the fan control circuit is electrically connected to the fan.

[0008] Further, the storage battery is a lithium battery with an output voltage of DC 48V, which is used to provide electrical energy for the operation of other devices on the ground wire ice melting tower side.

[0009] Further, the activation resistor is an aluminum shell resistor of 1000W / 5Ω, and heat sinks are attached to both sides of it, which is used to withstand the working current and release the power of the storage battery when the storage battery is activated.

[0010] Further, a radiator is provided on the base of the solid state relay.

[0011] Further, the DC-DC buck circuit includes a first-stage buck branch and a second-stage buck branch; the first-stage buck branch is connected to the solid state relay and the fan and provides a working power supply, and the second-stage buck branch is connected to the MCU circuit, the activation control circuit, and the fan control circuit and provides a working power supply.

[0012] Further, the buck range of the first-stage buck branch is from 48V to 12V, and the buck range of the second-stage buck branch is from 12V to 3.3V.

[0013] Further, the MCU circuit uses an STM32 single-chip microcomputer with an ARM CORTEX-M3 processor core to handle various control services.

[0014] Further, the activation control circuit includes a resistor R1, an optocoupler U1, a filter capacitor C1, a rectifier diode D1, a step-down diode D2, a power relay K1, and a pluggable terminal block J1; the optocoupler U1 has 4 pins. Two pins on one side are respectively connected to the activation command output signal DO2 and the resistor R1 connected to the 3.3V voltage. Two pins on the other side are respectively connected to both sides of the filter capacitor C1. Both sides of it are respectively connected to the 12V voltage and the rectifier diode D1. The rectifier diode D1 is connected to the power relay K1. Between the rectifier diode D1 and the power relay K1, it is grounded through the connected step-down diode D2. The remaining three pins of the power relay K1 are respectively connected to the 48V voltage, the pluggable terminal block J1, and the ground terminal. The pluggable terminal block J1 is used for the positive and negative poles of the activation resistor.

[0015] Further, the fan control circuit includes a resistor R2, an optocoupler U2, a filter capacitor C2, a rectifier diode D3, a step-down diode D4, a power relay K2, and a pluggable terminal block J2; the optocoupler U2 has 4 pins. Two pins on one side are respectively connected to the fan operation command signal DO3 and the resistor R2 connected to the 3.3V voltage. Two pins on the other side are respectively connected to both sides of the filter capacitor C2. Both sides of it are respectively connected to the 12V voltage and the rectifier diode D3. The rectifier diode D3 is connected to the power relay K2. Between the rectifier diode D3 and the power relay K2, it is grounded through the step-down diode D4. The remaining three pins of the power relay K2 are respectively connected to the 12V voltage, the pluggable terminal block J2, and the ground terminal. The pluggable terminal block J2 is used for the positive and negative poles of the fan.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present utility model provides a self-starting ground wire de-icing tower side terminal power activation system, which has the following beneficial effects:

[0018] 1. The system can select an appropriate time to discharge the battery according to the current operating state of the power supply system, enabling the battery to perform normal cyclic charge and discharge, maintaining the service life of the tower side terminal power module, and improving the service life of the battery.

[0019] 2. The system eliminates the need for maintenance personnel to go to the iron tower site for battery maintenance, saving labor costs. The battery activation program can be executed manually or automatically, facilitating operation by staff according to actual situations. The system realizes the activation management of the ground wire de-icing tower side terminal power of the transmission line, keeps the battery working stably for a long time, and reduces the accident rate of the risk of battery spontaneous combustion. Description of the drawings

[0020] Figure 1 This is the structural schematic diagram of a self-starting terminal power activation system for a ground wire ice melting tower according to the present utility model;

[0021] Figure 2 This is the activation control circuit diagram of a self-starting terminal power activation system for a ground wire ice melting tower according to the present utility model;

[0022] Figure 3 This is the fan control circuit diagram of a self-starting terminal power activation system for a ground wire ice melting tower according to the present utility model;

[0023] In the figure: 1. Energy storage battery; 2. Activation resistor; 3. Solid state relay; 4. Photovoltaic controller; 5. DC circuit breaker; 6. DC-DC buck circuit; 7. MCU circuit; 8. Activation control circuit; 9. Fan control circuit; 10. Fan. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figure 1 , the system includes an energy storage battery 1, an activation resistor 2, a solid state relay 3, a photovoltaic controller 4, a DC circuit breaker 5, a DC-DC buck circuit 6, an MCU circuit 7, an activation control circuit 8, a fan control circuit 9, and a fan 10; the energy storage battery 1, the activation resistor 2, the solid state relay 3, the photovoltaic controller 4, and the DC circuit breaker 5 are sequentially connected in series by wires to form an activation loop; the output interface of the photovoltaic controller 4 is electrically connected to the DC-DC buck circuit 6, the DC-DC buck circuit 6 is electrically connected to the MCU circuit 7, both ends of the MCU circuit 7 are electrically connected to the activation control circuit 8 and the fan control circuit 9 respectively, the activation control circuit 8 is connected to the control unit of the solid state relay 3 through a secondary connection wire, and the fan control circuit 9 is electrically connected to the fan 10.

[0026] In the above embodiment, the energy storage battery 1 is a lithium battery with an output voltage of DC 48V, which is used to provide electrical energy for the operation of other devices on the side of the ground wire de-icing tower. The activation resistor 2 is an aluminum shell resistor of 1000W / 5Ω, and heat sinks are attached to both sides of it. When the energy storage battery 1 is activated, it can withstand the working current and release the power of the energy storage battery 1. A radiator is provided on the base of the solid-state relay 3. The DC-DC buck circuit 6 includes a first-stage buck shunt and a second-stage buck shunt; the first-stage buck shunt is connected to the solid-state relay 3 and the fan 10 and provides the working power supply, and the buck range of the first-stage buck shunt is from 48V to 12V; the buck range of the second-stage buck shunt is from 12V to 3.3V; the second-stage buck shunt is connected to the MCU circuit 7, the activation control circuit 8 and the fan control circuit 9 and provides the working power supply, and the buck range of the second-stage buck shunt is from 12V to 3.3V. The MCU circuit 7 uses an STM32 single-chip microcomputer with an ARM CORTEX-M3 processor core to handle various control services.

[0027] Please refer to Figure 2 , the activation control circuit 8 includes a resistor R1, an optocoupler U1, a filter capacitor C1, a rectifier diode D1, a step-down diode D2, a power relay K1, and a pluggable terminal block J1; the optocoupler U1 has 4 pins. One side of the two pins is respectively connected to the activation instruction output signal DO2 and the resistor R1 connected to the 3.3V voltage. The two pins on the other side are respectively connected to both sides of the filter capacitor C1, and both sides of it are respectively connected to the 12V voltage and the rectifier diode D1. The rectifier diode D1 is connected to the power relay K1. Between the rectifier diode D1 and the power relay K1, it is grounded through the step-down diode D2. The remaining three pins of the power relay K1 are respectively connected to the 48V voltage, the pluggable terminal block J1, and the ground terminal. The pluggable terminal block J1 is used for the positive and negative poles of the activation resistor 2.

[0028] Please refer to Figure 3 , the fan control circuit 9 includes a resistor R2, an optocoupler U2, a filter capacitor C2, a rectifier diode D3, a step-down diode D4, a power relay K2, and a pluggable terminal block J2; the optocoupler U2 has 4 pins. One side of the two pins is respectively connected to the fan action instruction signal DO3 and the resistor R2 connected to the 3.3V voltage. The two pins on the other side are respectively connected to both sides of the filter capacitor C2, and both sides of it are respectively connected to the 12V voltage and the rectifier diode D3. The rectifier diode D3 is connected to the power relay K2. Between the rectifier diode D3 and the power relay K2, it is grounded through the step-down diode D4. The remaining three pins of the power relay K2 are respectively connected to the 12V voltage, the pluggable terminal block J2, and the ground terminal. The pluggable terminal block J2 is used for the positive and negative poles of the fan 10.

[0029] The working principle of the above embodiments includes the following steps:

[0030] S1. According to the usage frequency and energy consumption of the terminal on the ground wire de-icing tower in previous years, write the automatic activation program into the MCU circuit 7. When the energy storage battery 1 reaches full charge in the non-de-icing seasons of spring, summer, and autumn and meets the battery activation execution conditions, the MCU circuit 7 sends an activation instruction output signal DO2 to the activation control circuit 8 to automatically start the activation process to automatically activate the energy storage battery 1, and the working current of the activation circuit is set to 10A;

[0031] S2. The activation control circuit 8 enables the energy storage battery 1 to release the electric quantity through the activation resistor 2. During the execution of the activation process, the MCU circuit 7 automatically sends a fan action instruction signal DO3 to the fan control circuit 9 to control the fan 10 to rotate for air cooling of the activation resistor 2;

[0032] S3. The solid-state relay 3 monitors during the activation of the energy storage battery 1 and automatically disconnects the circuit in case of faults such as short circuit, overload, and overheat.

[0033] S4. The photovoltaic controller 4 manages and statistics the photovoltaic power generation situation, the power consumption situation of the terminal on the tower side, and the automatic activation process, and transmits each statistical parameter to the ground wire de-icing control platform in real time through the APN network or the OPGW optical cable. The ground wire de-icing control platform judges the charge and discharge times of the energy storage battery 1 according to the summarized parameters, and issues a life shortage warning when the remaining charge and discharge times reach 95% of the maximum life value; at the same time, a statistical curve of each activation time is formed on the ground wire de-icing control platform. Taking the first activation time as a reference, when the current activation time is less than 50% of the first time, a life shortage warning is sent.

[0034] S5. When the electric quantity of the energy storage battery 1 is released from the full charge state to 25% remaining, the automatic activation stops automatically.

[0035] In summary, the system can select an appropriate time to discharge the battery according to the current operating state of the power supply system, enabling the battery to charge and discharge normally in cycles, maintaining the service life of the power supply module of the terminal on the tower side, and improving the service life of the battery.

[0036] This system does not require maintenance personnel to go to the iron tower site for battery maintenance, saving labor costs. The battery activation program has manual and automatic execution, which is convenient for staff to operate according to the actual situation. This system realizes the activation management of the power supply of the terminal on the ground wire de-icing tower side of the transmission line, enables the battery to work stably for a long time, and reduces the accident rate of the risk of battery spontaneous combustion.

[0037] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-starting ground wire de-icing tower side terminal power activation system, characterized in that: The system includes an energy storage battery (1), an activation resistor (2), a solid-state relay (3), a photovoltaic controller (4), a DC circuit breaker (5), a DC-DC buck circuit (6), an MCU circuit (7), an activation control circuit (8), a fan control circuit (9), and a fan (10); the energy storage battery (1), the activation resistor (2), the solid-state relay (3), the photovoltaic controller (4), and the DC circuit breaker (5) are sequentially connected in series by wires to form an activation loop; the output interface of the photovoltaic controller (4) is electrically connected to the DC-DC buck circuit (6), the DC-DC buck circuit (6) is electrically connected to the MCU circuit (7), both ends of the MCU circuit (7) are respectively electrically connected to the activation control circuit (8) and the fan control circuit (9), the activation control circuit (8) is connected to the control unit of the solid-state relay (3) through a secondary connection wire, and the fan control circuit (9) is electrically connected to the fan (10).

2. The self-starting ground wire ice melting tower side terminal power activation system according to claim 1, characterized in that: The energy storage battery (1) is a lithium battery with an output voltage of DC 48V, and is used to provide electrical energy for the operation of other devices on the ground wire de-icing tower side.

3. A self-starting ground wire melting ice tower side terminal power activation system according to claim 1, characterized in that: The activation resistor (2) is an aluminum shell resistor of 1000W / 5Ω, and heat sinks are attached to both sides of it, which is used to bear the working current and release the electric quantity of the energy storage battery (1) when the energy storage battery (1) is activated.

4. A self-starting ground wire de-icing tower side terminal power activation system according to claim 1, characterized in that: A radiator is provided on the base of the solid-state relay (3).

5. The self-starting ground wire ice melting tower side terminal power activation system according to claim 1, characterized in that: The DC-DC buck circuit (6) includes a first-stage buck branch and a second-stage buck branch; the first-stage buck branch is connected to the solid-state relay (3) and the fan (10) and provides a working power supply, and the second-stage buck branch is connected to the MCU circuit (7), the activation control circuit (8), and the fan control circuit (9) and provides a working power supply.

6. The self-starting ground wire ice melting tower side terminal power activation system according to claim 5, characterized in that: The buck range of the first-stage buck branch is from 48V to 12V, and the buck range of the second-stage buck branch is from 12V to 3.3V.

7. The side terminal power activation system for a ground wire de-icing tower capable of self-starting according to claim 1, wherein: The MCU circuit (7) uses an STM32 single-chip microcomputer with an ARM CORTEX-M3 processor core to handle various control services.

8. A self-starting ground wire de-icing tower side terminal power activation system according to claim 1, characterized in that: The activation control circuit (8) includes a resistor R1, an optocoupler U1, a filter capacitor C1, a rectifier diode D1, a step-down diode D2, a power relay K1, and a pluggable terminal block J1; the optocoupler U1 has 4 pins, two pins on one side are respectively connected to the activation command output signal DO2 and the resistor R1 connected to the 3.3V voltage, two pins on the other side are respectively connected to both sides of the filter capacitor C1, and both sides of it are respectively connected to the 12V voltage and the rectifier diode D1, the rectifier diode D1 is connected to the power relay K1, the rectifier diode D1 and the power relay K1 are grounded through the connected step-down diode D2, the remaining three pins of the power relay K1 are respectively connected to the 48V voltage, the pluggable terminal block J1, and the ground terminal, and the pluggable terminal block J1 is used for the positive and negative poles of the activation resistor (2).

9. A self-starting ground wire melting ice tower side terminal power activation system according to claim 1, characterized in that: The fan control circuit (9) includes a resistor R2, an optocoupler U2, a filter capacitor C2, a rectifier diode D3, a step-down diode D4, a power relay K2, and a pluggable terminal block J2; the optocoupler U2 has 4 pins, two pins on one side are respectively connected to the fan operation command signal DO3 and the resistor R2 connected to the 3.3V voltage, two pins on the other side are respectively connected to both sides of the filter capacitor C2, and both sides are respectively connected to the 12V voltage and the rectifier diode D3. The rectifier diode D3 is connected to the power relay K2. A step-down diode D4 is grounded between the rectifier diode D3 and the power relay K2. The remaining three pins of the power relay K2 are respectively connected to the 12V voltage, the pluggable terminal block J2, and the ground terminal. The pluggable terminal block J2 is used for the positive and negative poles of the fan (10).

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