Intelligent power van based on zero-sensing switching power supply and power supply switching method

Abstract

The invention provides an intelligent power supply vehicle based on a zero-sensing switching power supply. The power supply vehicle comprises a mobile rack; the case is arranged on the movable rack; the power supply is arranged in the case; the controllers are arranged in the case at intervals, and the controllers are electrically connected with the power supply so as to control the output power of the power supply; the connector is arranged on the controller, and the connector is electrically connected with a power supply; and the movable heat dissipation assembly is arranged in the case. The power supply is connected to the low-voltage distribution box through the connector so as to supply power to the load. In the power supply switching process, in order to prevent a load from being damaged or affecting the use experience of the load due to sudden power supply switching when the power supply is directly switched to power supply; the output power of the power supply is gradually increased through the controller, so that the load power is gradually transferred to the power supply of the power van, and when the three-phase current of the mains supply is less than 30A, the mains supply switch is safely switched off, so that the mains supply stops supplying power to the load, and zero-sensing power supply switching is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply vehicles, and in particular to an intelligent power supply vehicle and a power supply switching method based on zero-perception switching of power supplies. Background Art

[0002] The power supply vehicle is a special vehicle equipped with a power supply device. It can be equipped with a battery pack, a diesel generator set, or a gas generator set. The power supply vehicle is usually used in power systems with a voltage level of 10kV to 20kV to perform tasks such as bypass cable operations, mobile box transformer operations, mobile ring network cabinet operations, and bypass switch operations. The design and use of the power supply vehicle follows specific technical specifications to ensure that the maintenance and emergency repair work of the power system is completed safely and reliably.

[0003] As the power system transforms towards intelligence and automation, the design of power supply vehicles also needs to continue to improve. Power supply vehicles need to integrate more advanced sensors and control systems to achieve more accurate and efficient power operations. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent power supply vehicle and a power supply switching method based on zero-perception switching power supply, so as to solve the problem that the existing power supply vehicle is not intelligent enough.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an intelligent power supply vehicle based on zero-perception switching power supply, the power supply vehicle comprising: a mobile frame; a chassis, the chassis is arranged on the mobile frame; a power supply, the power supply is arranged inside the chassis; a controller, the controller is arranged at intervals in the chassis, the controller is electrically connected to the power supply to control the output power of the power supply; a connector, the connector is arranged on the controller, the connector is electrically connected to the power supply; a mobile heat dissipation component, the mobile heat dissipation component is arranged inside the chassis.

[0006] Compared with the prior art, the beneficial effects of the present invention are as follows: the mobile rack is used to move with the chassis, so that the chassis has high flexibility. The mobile rack is preferably a car, which is used to carry the chassis to a designated location. After the chassis arrives at the designated location, the power supply is connected to the low-voltage distribution box through the connector, so as to supply power to the load, so as to avoid the load's power consumption being unable to be guaranteed during the inspection or maintenance process. In the process of power switching, in order to avoid the load being damaged or affecting its use experience due to the sudden power switching when directly switching to the power supply; the output power of the power supply is gradually increased by the controller, so that the load power is gradually transferred to the power supply of the power supply vehicle. When the three-phase current of the mains is less than 30A, the mains switch is safely disconnected, so that the mains withdraws from supplying power to the load, and zero-perception power switching is realized. The power supply generates heat when supplying power, and the heat causes the power supply to generate temperature rise, which affects the service life of the power supply. The mobile heat dissipation component is used to take away the heat generated when the power supply is supplied, ensuring that the power supply does not generate a relatively large temperature rise, thereby improving the service life of the power supply.

[0007] Preferably, the power supply comprises:

[0008] At least one battery pack, the battery pack is arranged in the chassis and is used to supply power to the load;

[0009] A diesel generator, which is arranged in the chassis and is used to supply power to a load, and at least one battery pack and the diesel generator are arranged in the chassis at intervals;

[0010] The mobile heat dissipation component comprises:

[0011] A processor is disposed in the chassis, the processor is electrically connected to the controller, and the processor is used to control the position of the mobile heat dissipation component.

[0012] Preferably, the mobile heat dissipation component further includes:

[0013] A fixing seat, the fixing seat is arranged in the chassis along the horizontal direction, or the fixing seat is arranged in the chassis along the longitudinal direction;

[0014] A heat sink, the heat sink being movably disposed on the fixed base;

[0015] A heat sink is disposed on the heat sink.

[0016] Preferably, the mobile heat dissipation component further includes:

[0017] A rotary power source, the rotary power source is disposed on the heat sink, and the rotary power source is electrically connected to the processor;

[0018] a gear connected to the rotary power source;

[0019] A rack is disposed on the fixing seat and is meshedly connected to the gear.

[0020] Preferably, the fixing seat is provided with a first slide rail, and the heat dissipation seat is provided with a first groove adapted to the first slide rail; the first slide rail is provided with a second slide rail, and the heat dissipation seat is provided with a second groove adapted to the second slide rail.

[0021] Preferably, the heat sink comprises:

[0022] A heat sink, the heat sink being arranged on the fixing seat;

[0023] A pump body, wherein the pump body is arranged on the heat dissipation box;

[0024] An air inlet, the air inlet being arranged on the heat dissipation box;

[0025] An air outlet is arranged on the heat dissipation box, and the air outlet is connected to a telescopic pipe, one end of the telescopic pipe is connected to the air outlet, and the other end of the telescopic pipe is connected to the outside of the chassis.

[0026] Preferably, the mobile heat dissipation component further includes:

[0027] At least one group of cushion blocks, wherein the cushion blocks are arranged at intervals between the first slide rail and the fixing seat along the moving direction of the heat sink.

[0028] Preferably, the mobile heat dissipation component further includes:

[0029] A plurality of temperature sensors are provided at the power supply, and a plurality of the temperature sensors are electrically connected to the processor.

[0030] Based on another object of the present invention, the present invention provides the following technical solution: a power switching method based on zero-perception switching power supply, the power switching method uses the intelligent power supply vehicle, and the power switching method includes the following steps:

[0031] S1. Debug the power supply through the controller to make it match the mains power;

[0032] S2, connect the power supply to the low-voltage distribution box of the transformer through the connector, and supply power to the load through the power supply and the mains at the same time;

[0033] S3, the controller gradually increases the output power of the power supply, and when the output power of the power supply is greater than or equal to the load power, the mains is disconnected to achieve zero-perception power switching;

[0034] S4. The mobile heat dissipation component cools the power supply and monitors the power supply in real time, and stops supplying power when an abnormality occurs in the power supply.

[0035] Preferably, the control method further comprises the following steps:

[0036] S5. Detect the mains power and adjust the power supply through the controller to synchronize it with the mains power;

[0037] S6, gradually reducing the output current of the power supply through the controller until the output current of the power supply is close to zero;

[0038] S7. Pull out the connector from the low-voltage distribution box to disconnect the power supply to the load and achieve zero-perception power switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0040] Figure 1 It is a three-dimensional structural schematic diagram of an intelligent power supply vehicle based on zero-perception switching power supply;

[0041] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0042] Figure 3 It is a schematic diagram of the three-dimensional structure of the mobile heat dissipation component;

[0043] Figure 4 for Figure 3 A partial enlarged view of point B in the middle.

[0044] In the figure: 1. mobile rack; 2. chassis; 3. controller; 4. connector; 5. fixing seat; 6. cushion block; 7. second slide rail; 8. first slide rail; 9. rack; 10. pump body; 11. air inlet; 12. heat sink; 13. air outlet; 15. rotary power source; 16. heat sink; 17. first groove; 18. second groove. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0046] In this article, the terms "upper, lower, inside, outside" and the like are established based on the positional relationships shown in the drawings. The corresponding positional relationships may also change depending on the drawings, and therefore cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0047] Embodiment 1

[0048] like Figure 1 , 2 As shown, this embodiment provides an intelligent power supply vehicle based on zero-perception switching power supply, and the power supply vehicle includes: a mobile rack 1; a chassis 2, which is arranged on the mobile rack 1; a power supply, which is arranged inside the chassis 2; a controller 3, which is arranged at intervals in the chassis 2, and the controller 3 is electrically connected to the power supply to control the output power of the power supply; a connector 4, which is arranged on the controller 3, and the connector 4 is electrically connected to the power supply; and a mobile heat dissipation component, which is arranged inside the chassis 2.

[0049] Specifically, the mobile rack 1 is used to move with the chassis 2, so that the chassis 2 has high flexibility. The mobile rack 1 is preferably a car, which is used to carry the chassis 2 to the designated location. After the chassis 2 arrives at the designated location, the power supply is connected to the low-voltage distribution box through the connector 4, so as to supply power to the load, so as to avoid the load's power consumption being unable to be guaranteed during the inspection or maintenance process. In the process of power switching, in order to avoid the load being damaged or affecting its use experience due to the sudden power switching when directly switching to the power supply; the output power of the power supply is gradually increased by the controller, so that the load power is gradually transferred to the power supply of the power supply vehicle. When the three-phase current of the mains is less than 30A, the mains switch is safely disconnected, so that the mains withdraws from supplying power to the load, and zero-perception power switching is realized. The power supply generates heat when supplying power, and the heat causes the power supply to generate temperature rise, which affects the service life of the power supply. The mobile heat dissipation component is used to take away the heat generated when the power supply is supplied, ensuring that the power supply does not generate a relatively large temperature rise, thereby improving the service life of the power supply.

[0050] Furthermore, the power supply includes several power components, which are specifically: at least one battery pack, which is arranged in the chassis 2 and is used to power the load; a diesel generator, which is arranged in the chassis 2 and is used to power the load, and at least one battery pack and a diesel generator are arranged in the chassis 2 at intervals; when the power supply is supplied, different power components can be supplied, and different power components can be battery packs or diesel generators, and the components that supply power will generate heat during the power supply process. The mobile heat dissipation component includes a processor, which is arranged in the chassis 2, and the processor is electrically connected to the controller 3, and the processor is used to control the position of the mobile heat dissipation component. The processor is electrically connected to the controller 3, and is used to obtain specific power supply information. When a specific power supply component is supplying power, the processor will control the mobile heat dissipation component to move to the component that is supplying power, while ensuring that the temperature of the power supply component that is supplying power will not increase significantly, while saving the energy required for heat dissipation, and avoiding direct heat dissipation of the entire power supply, resulting in the inability to effectively control the temperature of the specific power supply component and waste of energy.

[0051] like Figure 3 , 4 As shown, further, the mobile heat dissipation assembly further includes: a fixing seat 5, the fixing seat 5 is arranged in the chassis 2 in the horizontal direction, or the fixing seat 5 is arranged in the chassis 2 in the longitudinal direction; a heat dissipation seat 16, the heat dissipation seat 16 is movably arranged on the fixing seat 5; and a heat dissipation element is arranged on the heat dissipation seat 16. The heat dissipation element is mounted on the heat dissipation seat 16. During use, the processor controls the heat dissipation seat 16 to move its position on the fixing seat 5 so that the heat dissipation element can be aligned with the power supply assembly that is supplying power.

[0052] Furthermore, the mobile heat dissipation assembly also includes: a rotary power source 15, the rotary power source 15 is arranged on the heat sink 16, and the rotary power source 15 is electrically connected to the processor; a gear, the gear is connected to the rotary power source 15; and a rack 9, the rack 9 is arranged on the fixed seat 5, and the rack 9 is meshed with the gear. The rotary power source 15 is preferably any one of an electric motor and a motor. The rotary power source 15 drives the gear to rotate, thereby driving the heat sink 16 to change its position relative to the fixed seat 5. Preferably, it also includes an encoder, which is arranged on the rotary power source 15 and electrically connected to the processor. The encoder is used to record the rotation angle of the rotary power source 15 to record the specific position of the heat sink 16, and feed back the specific position of the heat sink 16 to the processor, so as to facilitate the processor to control the position of the heat sink 16.

[0053] Furthermore, the fixing seat 5 is provided with a first slide rail 8, and the heat sink 16 is provided with a first groove 17 adapted to the first slide rail; the first slide rail 8 is provided with a second slide rail 7, and the heat sink 16 is provided with a second groove 18 adapted to the second slide rail 7. The cooperation between the first slide rail 8 and the first groove 17 makes the heat sink 16 more stable during the movement. The cooperation with the second groove 18 of the second slide rail 7 further ensures the stability of the heat sink 16 during the movement, and avoids the heat sink from shaking during the heat dissipation process.

[0054] Furthermore, the heat sink includes: a heat sink 12, which is disposed on the fixing seat 5; a pump body 10, which is disposed on the heat sink 12; an air inlet 11, which is disposed on the heat sink 12; an air outlet 13, which is disposed on the heat sink 12, and the air outlet 13 is connected to a telescopic pipe, one end of which is connected to the air outlet, and the other end of which is connected to the outside of the chassis 2. The pump body 10 generates a swirl in the heat sink 12, so that air is sucked in from the air inlet 11 and discharged from the air outlet. The higher temperature air around the power supply component that is supplying power is extracted, and the lower temperature air around it is filled in to absorb the heat of the power supply component, thereby preventing the power supply component from generating a higher temperature rise.

[0055] Furthermore, the mobile heat dissipation assembly further includes: at least one group of pads 6, one group of pads 6 is arranged between the first slide rail 8 and the fixed seat 5 along the moving direction of the heat dissipation seat 16. The pads 6 are used to change the position of the heat dissipation element so that the heat dissipation element can be better aligned with the power supply assembly. The pads 6 can be stacked in several groups according to actual needs. The pads 6 and the fixed seat 5, the pads 6 and the pads 6, and the pads 6 and the first slide rail 8 are all connected by fasteners to ensure stability.

[0056] Furthermore, the mobile heat dissipation component also includes: a plurality of temperature sensors, which are arranged on the power supply and electrically connected to the processor. The data of the plurality of temperature sensors are transmitted to the processor, and when the temperature rises when the power supply component is not powered or the temperature is significantly higher than the ambient temperature, the staff is notified to determine whether to stop the power supply and repair the corresponding power supply component, so as to ensure safety.

[0057] Preferably, three elements, namely, whether the power supply component is supplying power, the rate of temperature rise of the power supply component, and the temperature difference between the power supply component and the ambient temperature, are used to form a feature vector. The probability that the staff will stop the power supply vehicle from supplying power is calculated by the above elements. The calculation method of the probability that the staff will stop the power supply vehicle from supplying power is as follows:

[0058]

[0059] z=w0+w1×x1+w2×x1+…+w n x n

[0060] Where x = [x1, x2, …x n ] represents the feature vector, w0 is the intercept term; the probability loss function is designed, and the calculation method of the probability loss function is as follows:

[0061]

[0062] In the formula, y represents the true label of a sample in a batch, Represents the probability value predicted by the model; optimize the weight, the weight optimization method is as follows:

[0063]

[0064] In the formula, represents the optimized weight, α represents the learning rate, Denotes the probability loss function for w i The partial derivative of . The above provides a solution for w = [w0, w1, w2, w3], and the probability that the staff will stop the power supply of the power supply vehicle is determined by the solved [w0, w1, w2, w3] and the feature vector at the current time point, and then whether to directly stop the power supply of the power supply vehicle is determined based on the probability that the staff will stop the power supply of the power supply vehicle. In the above training process of solving w = [w0, w1, w2, w3], the corresponding training data set is mainly formed based on whether the staff stops the power supply of the power supply vehicle under a specific feature vector when other conditions are the same. The formation of w = [w0, w1, w2, w3] is constrained by designing a loss function, and the loss function is minimized by optimizing the weights. Preferably, when the probability is less than 10%, wait for the staff to decide whether to cut off the power. When the probability is not less than 10%, the controller will directly stop the power supply of the power supply vehicle to ensure the safety of the power supply vehicle.

[0065] Embodiment 2

[0066] The same parts in this embodiment as those in the first embodiment are given the same figure marks, and the same text descriptions are omitted.

[0067] like Figure 3 As shown, this embodiment discloses a power switching method based on zero-perception switching power supply. The power switching method uses the intelligent power supply vehicle in the first embodiment. The power switching method includes the following steps: S1, debugging the power supply through the controller to match the mains power; debugging the power supply to match its various parameters with the mains power, ensuring that no access accidents occur during the power access process, and enhancing the safety performance of the access process;

[0068] S2. Connect the power supply to the low-voltage distribution box of the transformer through the connector, and power the load through the power supply and the mains at the same time; by setting the process of power supply and mains power supply at the same time, the transition of power supply alone can be realized to avoid direct switching to the mains power supply, which may damage the load or affect the user experience.

[0069] S3, the controller gradually increases the output power of the power supply, and when the output power of the power supply is greater than or equal to the load power, the mains is disconnected to achieve zero-perception power switching.

[0070] S4. The mobile heat dissipation component cools the power supply and monitors the power supply in real time. When the power supply is abnormal, the power supply is stopped. The way in which the mobile heat dissipation component cools the power supply has been described in detail in Example 1, and the way in which the mobile heat dissipation component cools the power supply is not repeated here. The temperature sensor monitors the temperature of the power supply in real time and transmits the temperature data to the processor. When the temperature rises when the power supply component is not powered or the temperature is significantly higher than the ambient temperature, or when the temperature of the power supply component rises too fast, the staff is notified to determine whether to stop the power supply and repair the corresponding power supply component. Used to ensure safety.

[0071] The three elements of whether the power supply component is supplying power, the temperature rise rate of the power supply component, and the difference between the power supply component and the ambient temperature are used to form a feature vector. The probability that the staff will stop the power supply vehicle from supplying power is calculated by the above elements. The calculation method of the probability that the staff will stop the power supply vehicle from supplying power is as follows:

[0072]

[0073] z=w0+w1×x1+w2×x1+…+w n x n

[0074] Where x = [x1, x2, …x n ] represents the eigenvector, w0 is the intercept term, and the solution of w=[w0, w1, w2, w3] is the same as that in the first embodiment, which will not be repeated here. When the probability is less than 10%, wait for the staff to decide whether to cut off the power. When the probability is not less than 10%, the controller will directly stop the power supply of the power supply vehicle to ensure the safety of the power supply vehicle.

[0075] Furthermore, after the inspection or maintenance is completed, it is necessary to switch the power supply for the load from the power supply to the mains power supply. The control method further includes the following steps: S5, detecting the mains power, adjusting the power supply through the controller to synchronize with the mains power; avoiding safety accidents during access through detection means, thereby improving the safety of the method;

[0076] S6. Gradually reduce the output current of the power supply through the controller until the output current of the power supply is close to zero; realize the transition of AC power supply alone by setting the simultaneous power supply process, avoid direct switching to AC power supply, which may damage the load or affect the user experience; S7. Unplug the connector from the low-voltage distribution box to disconnect the power supply to the load, and realize zero-perception power switching.

[0077] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. An intelligent power supply vehicle based on zero-perception switching power supply, characterized in that: The power supply vehicle comprises: Mobile rack (1); A chassis (2), the chassis (2) being arranged on the mobile frame (1); A power supply, the power supply being arranged inside the chassis (2); A controller (3), the controller (3) being arranged at intervals on the chassis (2), the controller (3) being electrically connected to the power supply to control the output power of the power supply; A connector (4), the connector (4) being arranged on the controller (3), the connector (4) being electrically connected to the power source; A mobile heat dissipation component is arranged inside the chassis (2).

2. According to claim 1, the intelligent power supply vehicle based on zero-perception switching power supply is characterized in that: The power supply comprises: at least one battery pack, the battery pack being arranged in the chassis (2) and being used to supply power to a load; A diesel generator, the diesel generator being arranged in the chassis (2) and used for supplying power to a load, and at least one battery pack and the diesel generator being arranged in the chassis (2) at intervals; The mobile heat dissipation component comprises: A processor, the processor is arranged in the chassis (2), the processor is electrically connected to the controller (3), and the processor is used to control the position of the mobile heat dissipation component.

3. According to claim 2, the intelligent power supply vehicle based on zero-perception switching power supply is characterized in that: The mobile heat dissipation component also includes: A fixing seat (5), the fixing seat (5) being arranged in the chassis (2) in a transverse direction, or the fixing seat (5) being arranged in the chassis (2) in a longitudinal direction; A heat sink (16), the heat sink (16) being movably disposed on the fixed base (5); A heat sink is arranged on the heat sink (16).

4. The intelligent power supply vehicle based on zero-perception switching power supply according to claim 3 is characterized in that: The mobile heat dissipation component also includes: A rotary power source (15), the rotary power source (15) being disposed on the heat sink (16), and the rotary power source (15) being electrically connected to the processor; a gear connected to the rotary power source (15); A rack (9), wherein the rack (9) is arranged on the fixing seat (5), and the rack (9) is meshedly connected to the gear.

5. The intelligent power supply vehicle based on zero-perception switching power supply according to claim 4 is characterized in that: The fixing seat (5) is provided with a first slide rail (8), and the heat sink (16) is provided with a first groove (17) adapted to the first slide rail; the first slide rail (8) is provided with a second slide rail (7), and the heat sink (16) is provided with a second groove (18) adapted to the second slide rail (7).

6. The intelligent power supply vehicle based on zero-perception switching power supply according to claim 3 is characterized in that: The heat sink comprises: A heat dissipation box (12), wherein the heat dissipation box (12) is arranged on the fixing seat (5); A pump body (10), wherein the pump body (10) is arranged on the heat dissipation box (12); An air inlet (11), the air inlet (11) being arranged on the heat dissipation box (12); An air outlet (13), the air outlet (13) being arranged on the heat dissipation box (12), the air outlet (13) being connected to a telescopic pipe, one end of the telescopic pipe being connected to the air outlet, and the other end of the telescopic pipe being connected to the outside of the chassis (2).

7. The intelligent power supply vehicle based on zero-perception switching power supply according to claim 5 is characterized in that: The mobile heat dissipation component also includes: At least one group of cushion blocks (6), wherein the group of cushion blocks (6) are arranged at intervals between the first slide rail (8) and the fixed seat (5) along the moving direction of the heat sink (16).

8. The intelligent power supply vehicle based on zero-perception switching power supply according to claim 2 is characterized in that: The mobile heat dissipation component also includes: A plurality of temperature sensors are provided at the power supply, and a plurality of the temperature sensors are electrically connected to the processor.

9. A power switching method based on zero-perception switching power supply, characterized in that: The power switching method uses the intelligent power supply vehicle according to any one of claims 1 to 8, and the power switching method comprises the following steps: S1. Debug the power supply through the controller to make it match the mains power; S2, connect the power supply to the low-voltage distribution box of the transformer through the connector, and supply power to the load through the power supply and the mains at the same time; S3, the controller gradually increases the output power of the power supply, and when the output power of the power supply is greater than or equal to the load power, the mains is disconnected to achieve zero-perception power switching; S4. The mobile heat dissipation component cools the power supply and monitors the power supply in real time, and stops supplying power when an abnormality occurs in the power supply.

10. A power switching method based on zero-sense switching power supply according to claim 9, characterized in that: The power switching method further comprises the following steps: S5. Detect the mains power and adjust the power supply through the controller to synchronize it with the mains power; S6, gradually reducing the output current of the power supply through the controller until the output current of the power supply is close to zero; S7. Pull out the connector from the low-voltage distribution box to disconnect the power supply to the load and achieve zero-perception power switching.

Images