High-pressure source comprehensive energy-saving device and implementation method thereof

Abstract

The invention relates to the technical field of high-voltage energy saving, and particularly discloses a comprehensive energy-saving device for a high-voltage source and an implementation method of the comprehensive energy-saving device. The high-voltage distributor comprises a power frequency bypass power cabinet, a variable-frequency power circuit breaker cabinet and an SVG circuit breaker cabinet; an SVG cabinet and a frequency conversion mechanism; the refrigeration energy collection mechanism comprises a shell, a spiral pipeline, a power generation assembly and a heat exchange cabinet, the high-voltage distributor, the SVG cabinet and the frequency conversion mechanism are arranged in the shell, and the refrigeration energy collection mechanism can generate power while dissipating heat; and the master controller receives the signals from the frequency conversion mechanism and the SVG cabinet, detects, analyzes and processes the signals, and realizes pre-detection. According to the invention, the defects of high energy consumption, insufficient energy utilization and insufficient heat dissipation of high-voltage equipment in the prior art are overcome.

Description

Technical Field

[0001] This invention relates to the field of high-voltage energy conservation, and in particular to a comprehensive energy-saving device for high-voltage sources and its implementation method. Background Technology

[0002] In large industrial sectors such as metallurgy, chemical engineering, mining, and rail transportation, high-voltage power supply busbars typically connect a large number of inductive loads (such as large motors and transformers), nonlinear loads (such as frequency converters, electric arc furnaces, and rolling mills), and intermittently operating impulsive loads. The operation of these loads presents severe challenges to the power quality and energy consumption of the high-voltage power grid.

[0003] In existing technologies, high-voltage equipment typically uses a single high-voltage distributor directly connected to a bypass cabinet, which then distributes power to the load. This method tends to generate significant heat, thus affecting its lifespan. Furthermore, this method is inefficient in energy utilization and results in substantial energy consumption during transmission. Summary of the Invention

[0004] (a) Technical problems to be solved The problem to be solved by the present invention is to provide a high-voltage source integrated energy-saving device and its implementation method, so as to overcome the defects of high energy consumption, insufficient energy utilization and insufficient heat dissipation of high-voltage equipment in the prior art.

[0005] (II) Technical Solution To solve the aforementioned technical problem, a first aspect of the present invention provides a high-voltage source integrated energy-saving device, comprising: Power grid; High-voltage power distribution unit, which includes a power frequency bypass power supply cabinet, a variable frequency power supply circuit breaker cabinet and an SVG circuit breaker cabinet; The SVG cabinet and the frequency converter mechanism are connected to the SVG circuit breaker cabinet and the frequency converter mechanism is connected to the SVG circuit breaker cabinet. A refrigeration energy collection mechanism includes a housing, a spiral pipe, a power generation component, and a heat exchange cabinet. The high-voltage distributor, SVG cabinet, and frequency converter are housed in the housing. The top of the housing is gradually expanding. The spiral pipe is located outside the housing. The power generation component is located inside the spiral pipe. Both ends of the spiral pipe are connected to the top of the heat exchange cabinet. The power generation component includes fan blades, a rotating shaft, and a micro generator. The fan blades are connected to the rotating shaft, and the rotating shaft is perpendicular to the axis of the spiral pipe. The heat exchange cabinet has an opening at its center, and the middle end of the opening is concave. The interior of the heat exchange cabinet includes a first cavity and a second cavity. The first energy storage block is connected to the micro generator. The first energy storage block, the power frequency bypass power cabinet, and the frequency conversion mechanism are all connected to the bypass cabinet. The main controller receives signals from the frequency converter and the SVG cabinet, and detects, analyzes and processes the signals. The main controller has a training module that collects data in real time, performs adaptive learning on the data, and analyzes and adjusts the load change trend for the next hour.

[0006] As described above, the high-voltage source integrated energy-saving device may optionally include a main controller with a simulation function. When the user inputs hypothetical conditions, the main controller automatically calculates the expected energy-saving effect and benefits, providing data support for the user's decision-making.

[0007] As described above, the high-voltage source integrated energy-saving device may optionally include a training module for adjusting the threshold range of data. When the detected data exceeds the threshold range, the main controller will trigger an alarm and lock the fault location.

[0008] As described above, in the high-voltage source integrated energy-saving device, optionally, the frequency conversion mechanism includes a second controller, a phase-shifting transformer, and an H-bridge power unit. The phase-shifting transformer is divided into multiple blocks, and each of the multiple phase-shifting transformer blocks is connected to a corresponding H-bridge power unit. Each H-bridge power unit is connected in parallel to the transmission bus. The transmission bus is connected to a bypass cabinet, and the bypass cabinet is connected to the load. The second controller is connected to the main controller, and the second controller and the main controller are connected by bidirectional electrical signals.

[0009] As described above, in the high-voltage source integrated energy-saving device, optionally, the SVG cabinet includes a first controller and an SVG power unit connected in sequence, and the first controller is bidirectionally electrically connected to the main controller.

[0010] As described above, the high-pressure source integrated energy-saving device may optionally include multiple power generation components, which are distributed at equal intervals within the spiral pipe.

[0011] As described above, in the high-pressure source integrated energy-saving device, optionally, a water pump is installed between the connection end of the spiral pipe and the heat exchange cabinet.

[0012] As described above, the high-voltage source integrated energy-saving device can optionally be connected to the power grid and the second energy storage block, which is used to store backup power. The second energy storage block is also connected to the bypass cabinet, which is used to store emergency power and realize peak-shifting power consumption.

[0013] As mentioned above, the high-voltage source integrated energy-saving device may optionally include a high-voltage circuit breaker at the power grid.

[0014] A second aspect of the present invention provides a method for implementing the high-voltage source integrated energy-saving device as described above, the method comprising: S1: The main controller is started; S2: The SVG cabinet is started to dynamically compensate reactive power. The frequency converter is started to provide protection and adjust the load speed. When the frequency converter fails, the power frequency bypass power supply cabinet is started. S3: The cooling energy collection mechanism is activated, and the first energy storage block stores energy. The first energy storage block is used for emergency energy storage.

[0015] (III) Beneficial Effects The present invention provides a high-voltage source integrated energy-saving device and its implementation method, the beneficial effects of which are as follows: (1) This invention receives signals from the frequency converter and SVG cabinet through a central controller, and detects, analyzes and processes the signals. The central controller can analyze the load change trend in the next hour based on the data of the training model and big data, and make advance adjustments. This method can make adjustments more naturally through pre-adjustment, avoiding multiple jump adjustments, thereby achieving energy saving. At the same time, when the central controller judges the equipment failure trend, it issues an alarm in advance to realize pre-detection and maintenance, ensuring better safety.

[0016] (2) This invention achieves cooling of internal equipment through a refrigeration energy collection mechanism. While cooling, it can generate electricity using the potential energy of the water flow during cooling. The first storage block stores the electricity, and the combination of the first and second storage blocks can achieve peak-shifting power consumption and emergency power supply. This design can ensure energy utilization while saving electricity costs. At the same time, the design in the heat exchange cabinet can also achieve better heat exchange effect and potential energy utilization.

[0017] (3) This invention connects to the power grid and a high-voltage power distribution unit. The high-voltage power distribution unit is connected to the SVG cabinet and the frequency converter. The SVG cabinet is used to dynamically compensate for reactive power, thereby achieving energy saving. The frequency converter is used to provide safety protection and regulate the load. At the same time, electrical energy can be connected to the load after being processed by the frequency converter. When the frequency converter fails, it can also be directly connected to the load through the SVG cabinet, playing a safety protection role. This design, while playing a safety protection role, completes the regulation of reactive power and frequency conversion, achieving better energy utilization and thus achieving energy saving. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a flowchart of a high-voltage source integrated energy-saving device and its implementation method according to the present invention; Figure 2 This is a perspective view of the refrigeration energy collection mechanism of a high-voltage source integrated energy-saving device and its implementation method according to the present invention; Figure 3 This is a cross-sectional view of the rotating mechanism and power generation components of a high-voltage source integrated energy-saving device and its implementation method according to the present invention. Figure 4 This is a cross-sectional view of the heat exchanger cabinet of the high-pressure source integrated energy-saving device and its implementation method according to the present invention.

[0020] The component names corresponding to the various labels in the figure are as follows: 1. High-voltage distributor; 11. Power frequency bypass power supply cabinet; 12. Variable frequency power circuit breaker cabinet; 13. SVG circuit breaker cabinet; 2. SVG cabinet; 21. First controller; 22. SVG power unit; 3. Variable frequency mechanism; 31. Second controller; 32. Phase-shifting transformer; 33. H-bridge power unit; 4. Refrigeration energy collection mechanism; 41. Housing; 42. Coiled pipe; 43. Power generation component; 44. Heat exchange cabinet; 45. Fan blade; 46. Shaft; 47. Opening; 48. First cavity; 49. Second cavity; 5. First energy storage block; 51. Bypass cabinet; 52. Main controller; 53. Water pump; 54. Second energy storage block; 55. High-voltage circuit breaker. Detailed Implementation

[0021] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0024] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0025] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0026] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0027] See Figures 1 to 4 The first aspect of this invention provides a comprehensive energy-saving device for high-voltage sources, which can be applied to high-voltage sources to achieve energy-saving effects. Specifically, it includes: a power grid, a high-voltage distributor 1, an SVG cabinet 2, a frequency converter 3, a cooling energy collection mechanism 4, a first energy storage block 5, and a second energy storage block 54. The power grid is connected to the second energy storage block 54, which stores electricity generated during off-peak hours, thereby saving electricity costs and making reasonable use of excess power. The power grid is connected to the high-voltage distributor 1, which is connected to both the SVG cabinet 2 and the frequency converter 3. The SVG cabinet 2 dynamically compensates for reactive power, thereby achieving energy-saving effects. The frequency converter 3 provides safety protection and adjusts the load.

[0028] Furthermore, the cooling energy collection mechanism 4 is used to remove the heat in this invention. While removing the heat, it can generate electricity, which is then stored in the first energy storage block 5, thus achieving the effect of energy saving.

[0029] exist Figures 1 to 4 In an optional embodiment, a high-voltage circuit breaker 55 is provided at the power grid. When a power grid fault occurs, the high-voltage circuit breaker 55 can protect the power grid and equipment.

[0030] Meanwhile, the high-voltage power distribution unit 1 includes a power frequency bypass power supply cabinet 11, a variable frequency power circuit breaker cabinet 12, and an SVG circuit breaker cabinet 13. The power frequency bypass power supply cabinet 11 is used to provide backup power for the load, while the SVG circuit breaker cabinet 13 and the variable frequency power circuit breaker cabinet 12 are used to provide safety protection. As described above, the high-voltage power distribution unit 1 is connected to the bypass cabinet 51 through the power frequency bypass power supply cabinet 11, and the variable frequency power circuit breaker cabinet 12 is indirectly connected to the bypass cabinet 51 through the frequency conversion mechanism 3. Additionally, the second energy storage block 54 and the first energy storage block 5 are used to provide emergency power supply and can also provide peak-shifting power supply.

[0031] exist Figures 1 to 4 In an optional embodiment, the SVG cabinet 2 is connected to the SVG circuit breaker cabinet 13, and the frequency conversion mechanism 3 is connected to the frequency conversion power circuit breaker cabinet 12.

[0032] Meanwhile, the frequency converter 3 includes a second controller 31, a phase-shifting transformer 32, and an H-bridge power unit 33. The phase-shifting transformer 32 is divided into multiple blocks, and each phase-shifting transformer 32 is connected to each H-bridge power unit 33. Each H-bridge power unit 33 is connected in parallel to the transmission bus. The transmission bus is connected to the bypass cabinet 51, and the bypass cabinet 51 is connected to the load. The second controller 31 is connected to the main controller 52, and the second controller 31 and the main controller 52 are connected by bidirectional electrical signals.

[0033] It should be noted that there can be multiple H-bridge power units 33, and the specific number is defined by those skilled in the art according to the actual situation. At the same time, the phase-shifting transformer 32 has multiple independent channels, and the number of independent channels is consistent with the number of H-bridge power units 33. When the power transmitted by the grid passes through each independent H-bridge power unit 33, it will be aggregated, and the aggregated power will be input into the bypass cabinet 51. The bypass cabinet 51 is used to process and distribute the power.

[0034] Furthermore, the SVG cabinet 2 includes a first controller 21 and an SVG power unit 22 connected in sequence, and the first controller 21 is bidirectionally electrically connected to the main controller 52.

[0035] exist Figures 1 to 4 In an optional embodiment, the cooling energy collection mechanism 4 includes a housing 41, a spiral pipe 42, a power generation component 43, and a heat exchange cabinet 44. The high-voltage distributor 1, the SVG cabinet 2, and the frequency converter 3 are disposed within the housing 41. The top of the housing 41 is gradually expanding, which can accelerate heat dissipation. Meanwhile, the spiral pipe 42 is disposed outside the housing 41. In another embodiment of the invention, the spiral pipe 42 can also be densely arranged at areas of severe heat generation, including but not limited to the high-voltage distributor 1. The power generation component 43 is disposed within the spiral pipe 42, and both ends of the spiral pipe 42 are connected to the top of the heat exchange cabinet 44.

[0036] Furthermore, there are multiple power generation components 43, which are distributed at equal intervals within the spiral pipe 42.

[0037] Furthermore, the power generation component 43 includes a fan blade 45, a rotating shaft 46, and a micro generator. The fan blade 45 is connected to the rotating shaft 46, which is perpendicular to the axis of the spiral pipe 42. When water flows downward along the spiral pipe 42, potential energy is converted into kinetic energy, which is then converted into electrical energy by the micro generator.

[0038] Meanwhile, the heat exchange cabinet 44 has an opening 47 at its center. The middle of the opening 47 is concave. Since the water flow after heat exchange will have a higher temperature, the high-temperature water flow and the low-temperature water flow will be separated into hot and cold layers. Therefore, under the influence of the temperature difference, air convection will be generated and flow in the opening 47, thus completing the auxiliary heat dissipation.

[0039] Furthermore, a water pump 53 is installed between the connection end of the spiral pipe 42 and the heat exchanger 44. The water pump 53 provides power support.

[0040] Specifically, the heat exchanger 44 includes a first chamber 48 and a second chamber 49. The first chamber 48 contains water, and the second chamber 49 contains heat exchange fluid. The outer surface of the first chamber 48 is threaded, which increases the contact area and accelerates heat dissipation. Simultaneously, the heat exchange fluid can be connected to an external cooling source for recycling.

[0041] Furthermore, the first energy storage block 5 is connected to the micro generator, the first energy storage block 5 is connected to the bypass cabinet 51, the power frequency bypass power supply cabinet 11 and the frequency converter 3 are both connected to the bypass cabinet 51.

[0042] Furthermore, the top of the heat exchanger 44 is higher than the shell 41, which allows for better utilization of potential energy, thereby enabling power generation.

[0043] exist Figures 1 to 4 In an optional embodiment, the main controller 52 receives signals from the frequency converter 3 and the SVG cabinet 2, and detects, analyzes and processes the signals. The main controller 52 has a training module, which collects data in real time and performs adaptive learning on the data. The training module is used to coordinate the main controller 52 to analyze and adjust the load change trend in the next hour and realize advance adjustment. When the main controller 52 judges the equipment failure trend, it issues an alarm in advance to realize pre-detection and maintenance.

[0044] Furthermore, the main controller 52 has a simulation function. When the user inputs hypothetical conditions, the main controller 52 automatically calculates the expected energy-saving effect and benefits, providing data support for the user's decision-making.

[0045] Therefore, the main controller 52 can make predictions one hour in advance by using big data and historical records, combined with the training of the training model, and gradually adjust various indicators. For example, when the load has a higher speed requirement at a certain time, the main controller 52 will adjust it to achieve the effect of saving and avoid waste.

[0046] Meanwhile, the training module is also used to adjust the threshold range of the data. When the detected data exceeds the threshold range, the main controller 52 will trigger an alarm and lock the fault location.

[0047] Furthermore, the power grid is connected to the second energy storage block 54, which is used to store backup power. The second energy storage block 54 is also connected to the bypass cabinet 51, which is used to store emergency power and realize peak-shifting power consumption.

[0048] A second aspect of the present invention provides a method for implementing the aforementioned high-voltage source integrated energy-saving device, the method comprising: S1: The main controller 52 is started.

[0049] The main controller 52 starts up and loads past data to complete the pre-preparation.

[0050] S2: SVG cabinet 2 starts, used for dynamic compensation of reactive power. Variable frequency drive 3 is started, used for protection and adjustment of load speed. When variable frequency drive 3 fails, power frequency bypass power supply cabinet 11 starts.

[0051] As described above, SVG cabinet 2 starts up, thereby realizing dynamic reactive power compensation. Specifically, when capacitive reactive power needs to be supplied, SVG generates an AC voltage slightly higher than the grid voltage, thereby "sending" reactive current to the grid. When inductive reactive power needs to be absorbed, SVG generates an AC voltage slightly lower than the grid voltage, thereby "absorbing" reactive current from the grid. This method can be implemented in conjunction with the first controller 21.

[0052] S3: The cooling energy collection mechanism 4 is activated, and the first energy storage block 5 stores energy. The first energy storage block 5 is used for emergency energy storage.

[0053] The cooling energy collection mechanism 4 can provide cooling effect and improve service life. At the same time, better cooling can provide better support for the operation of the equipment. While cooling, the potential energy of water can be converted into kinetic energy, thereby driving the micro generator. The electricity is stored in the first energy storage block 5 and, together with the second energy storage block 54, can be used for emergency and peak-shifting power consumption.

[0054] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments.

[0055] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A high pressure source integrated energy saving device, characterized in that, The utility model relates to a kind of high-voltage power distribution device and its control method, including: Power grid; High-voltage power distribution device (1), the high-voltage power distribution device (1) includes power frequency bypass power supply cabinet (11), variable frequency power circuit breaker cabinet (12) and SVG circuit breaker cabinet (13); SVG cabinet (2) and variable frequency mechanism (3), the SVG cabinet (2) is connected with the SVG circuit breaker cabinet (13), and the variable frequency mechanism (3) is connected with the SVG circuit breaker cabinet (13); Refrigeration energy collection mechanism (4), the refrigeration energy collection mechanism (4) includes shell (41), spiral duct (42), power generation assembly (43) and heat exchange cabinet (44), the high-voltage power distribution device (1), SVG cabinet (2) and variable frequency mechanism (3) are arranged in the shell (41), the top of the shell (41) is gradually expanded, the spiral duct (42) is arranged outside the shell (41), the power generation assembly (43) is arranged in the spiral duct (42), and both ends of the spiral duct (42) are connected with the top of the heat exchange cabinet (44); The power generation assembly (43) includes fan blade (45), rotating shaft (46) and micro power generator, the fan blade (45) is connected with the rotating shaft (46), and the rotating shaft (46) is arranged perpendicularly with the axis of the spiral duct (42); The heat exchange cabinet (44) has aperture (47) at the center position, the middle end of the aperture (47) is concave, and the inside of the heat exchange cabinet (44) includes first cavity (48) and second cavity (49); First energy storage block (5), the first energy storage block (5) is connected with micro power generator, and the first energy storage block (5), the power frequency bypass power supply cabinet (11) and the variable frequency mechanism (3) are connected with bypass cabinet (51); Total controller (52), the total controller (52) receives signal from the variable frequency mechanism (3) and the SVG cabinet (2), and detects, analyzes and processes signal, and the total controller (52) has training module, training module real-time data acquisition and adaptive learning are carried out to data, and the load change trend of future 1 hour is analyzed and adjusted.

2. The high pressure source integrated energy saving device of claim 1, wherein, The total controller (52) has analog function, when user input assumption condition, the total controller (52) automatically calculates expected power saving effect and benefit, and provides data support for user decision-making.

3. The high pressure source integrated energy saving device of claim 1, wherein, Training module is also used for adjusting threshold range of data, when the detected data exceeds threshold range, the total controller (52) alarms, and locks fault position.

4. The high pressure source integrated energy saving device of claim 1, wherein, The variable frequency mechanism (3) comprises a second controller (31), a phase-shift transformer (32) and an H-bridge power unit (33), the phase-shift transformer (32) is divided into multiple blocks, multiple phase-shift transformers (32) are connected with each H-bridge power unit (33) correspondingly, each H-bridge power unit (33) is connected in parallel to a transmission bus, the transmission bus is connected with a bypass cabinet (51), the bypass cabinet (51) is connected with a load, the second controller (31) is connected with the total controller (52), and the second controller (31) is connected with the total controller (52) in a bidirectional electrical signal connection mode.

5. The high pressure source integrated energy saving device of claim 1, wherein, The SVG cabinet (2) comprises a first controller (21) and an SVG power unit (22) connected in sequence, and the first controller (21) is connected with the total controller (52) in a bidirectional electrical signal connection mode.

6. The high pressure source integrated energy saving device of claim 1, wherein, The power generation assembly (43) is provided in multiple numbers, and multiple power generation assemblies (43) are distributed equidistantly in the spiral pipeline (42).

7. The high pressure source integrated energy saving device of claim 1, wherein, A water pump (53) is arranged between the spiral pipeline (42) and a connecting end of the heat exchange cabinet (44).

8. The high pressure source integrated energy saving device of claim 1, wherein, A power grid is connected with a second energy storage block (54), the second energy storage block (54) is used for storing standby power, the second energy storage block (54) is connected with the bypass cabinet (51), and the second energy storage block (54) is used for storing an emergency power supply and realizing peak-shaving power utilization.

9. The high pressure source integrated energy saving device of claim 1, wherein, A high-voltage circuit breaker (55) is arranged at the power grid.

10. A method of implementing the high-pressure source head comprehensive energy-saving device according to any one of claims 1 to 9, characterized in that, The implementation method comprises the following steps: S1: the total controller (52) is started; S2: the SVG cabinet (2) is started, used for dynamically compensating reactive power, the variable frequency mechanism (3) is started, used for playing a protection role and adjusting a load rotating speed, and the power frequency bypass power supply cabinet (11) is started when the variable frequency mechanism (3) fails; S3: the refrigeration energy collection mechanism (4) is started, the first energy storage block (5) stores energy, and the first energy storage block (5) is used for emergency energy storage.

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