A device and method for expanding voltage regulation of alternating current deicing of power distribution lines

Abstract

The application relates to the technical field of transformers, in particular to an alternating-current ice-melting expansion type voltage regulating device for a power distribution line, which comprises a transformer, the side surface of the transformer is provided with a cooling mechanism, the upper surface of the transformer is provided with a fixing mechanism, the upper surface of the transformer is provided with a protection mechanism, and the upper surface of the transformer is fixedly provided with a high-voltage terminal. The alternating-current ice-melting expansion type voltage regulating device for the power distribution line is characterized in that the corrugated radiator is made of special material and has excellent heat dissipation performance; the heat dissipation holes on the surface of the corrugated radiator make the air circulation more smooth, thereby improving the heat dissipation efficiency; when the temperature inside the transformer rises, the water pump is started, the cooling liquid in the water tank is circulated and delivered to the corrugated radiator through the cooling pipe, the heat is absorbed and taken away through the flow of the cooling liquid, and then the water is returned to the water tank through the water delivery pipe to form a complete heat dissipation system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformer, in particular to an alternating current ice melting expansion type voltage regulating device and method for power distribution line. BACKGROUND

[0002] As one of the main power transmission and transformation equipment in the substation, the transformer has a core position in the substation, and can be said to be the heart of the substation. The good or bad of the operation state of the transformer directly affects the entire substation. Most large power transformers are oil-immersed transformers. The characteristic of the oil-immersed transformer is that oil is used as the heat dissipation and insulation medium of the transformer winding and core. The hazards of the transformer operating in a high-temperature environment mainly include insulation damage, fire risk, and significant shortening of service life. For example, insulation damage: high temperature can cause the performance of the insulation material inside the transformer to decrease, reducing its withstand voltage capacity and mechanical strength. When the hottest point temperature of the transformer reaches 140 degrees Celsius, bubbles will be generated in the oil, which will further reduce the insulation performance or cause flashover, thereby causing the transformer to be damaged. Fire risk: the oil and other organic combustible materials inside the transformer are prone to fire and explosion under high temperature. In addition, if the protection device of the transformer fails or is improperly set, it is more likely to cause a fire due to overheating when encountering a short circuit or overload. Shortening of service life: high temperature can accelerate the aging process of the insulation material of the transformer, shortening its service life. High-temperature environment has a great negative impact on the operation safety and service life of the transformer. Therefore, an alternating current ice melting expansion type voltage regulating device for power distribution line is particularly needed.

[0003] However, most existing transformers, mostly oil-immersed transformers, generate heat and form high temperature during operation. The heat is transferred to the mineral oil, which is then transferred to the box through the transformer oil. The box is cooled by natural air. However, this heat dissipation method has low efficiency. When the oil temperature rises, the cooling effect of the oil decreases significantly. At this time, the operating transformer may have certain safety hazards. In addition, during long-term use, under the condition of local overheating or discharge, the insulation oil may crack, producing carbon particles. The particulate matter generated by the aging of the insulation oil may affect the normal operation of the transformer, reduce the insulation performance, and increase the risk of partial discharge. In addition, after the line is iced in snowy weather, its load will increase, and the wind area will also increase. If it encounters a strong wind, the line may sway, threatening the stability and safety of the line. Once it sways, even the steel-reinforced power grid may break, break, or even collapse, causing serious consequences. In addition, line sway may also cause interphase flashover, ice flash of insulator, and other conditions, seriously affecting the safe operation of the power grid. SUMMARY

[0004] The utility model aims at providing a kind of for distribution line alternating current ice-melting expansion type voltage regulating device, to solve the existing transformer in the background art proposed above, most oil-immersed transformer, heat is generated in the working process to form high temperature, heat is transferred to mineral oil, then, transformer oil is transferred to box, box is cooled by natural air, however, the heat dissipation efficiency of this heat dissipation mode is low, when oil temperature rises, the cooling effect of oil is greatly reduced, at this time, the transformer operated will exist certain security risk, and in the case of local overheating or discharge during long-term use, insulation oil can crack, carbonaceous particles can be generated, and the granular material generated by insulation oil aging can affect the normal operation of transformer, reduce insulation performance, increase the risk of partial discharge, and in ice and snow weather, the weight of line will increase, and the wind area will also increase, if it encounters windy weather, line will sway, leading to the stability and safety of line are threatened, once dancing, even the steel and iron nerves of power grid can also occur broken strand, broken wire, even tower, broken rod and other serious consequences, in addition, line dancing can also lead to interphase flashover, insulator ice flash and other conditions, which seriously affect the safe operation of power grid.

[0005] Therefore, the purpose of the present application is to provide a kind of for distribution line alternating current ice-melting expansion type voltage regulating device.

[0006] To solve the above technical problems, the present application provides the following technical scheme: a kind of for distribution line alternating current ice-melting expansion type voltage regulating device, including transformer, the side surface of the transformer is provided with cooling mechanism, the upper surface of the transformer is provided with fixed mechanism, the upper surface of the transformer is provided with protection mechanism, the upper surface of the transformer is fixedly installed with high voltage terminal, the upper surface of the transformer is fixedly installed with hanging plate column, the upper surface of the transformer is fixedly installed with oil level gauge, the upper surface of the transformer is fixedly installed with low voltage terminal;

[0007] The cooling mechanism includes corrugated radiator, heat dissipation hole, cooling pipe, water pump, water pipe and water tank, one side of the transformer is fixedly connected with corrugated radiator, the side surface of the corrugated radiator is provided with heat dissipation hole, the outside surface of the corrugated radiator is connected with cooling pipe, one side surface of the cooling pipe is fixedly connected with water pump, one side surface of the water pump is fixedly connected with water pipe, one side surface of the water pipe is fixedly connected with water tank.

[0008] As a preferred scheme of the alternating current ice melting expansion type voltage regulating device for power distribution lines of the present application, wherein: the fixing mechanism comprises a fixing seat, a rotating shaft, a fixing plate, a connecting rod, a connecting shaft, a fixing rod, a first spring and a clamping block, the upper surface of the transformer is fixedly connected with the fixing seat, the upper surface of the fixing seat is rotationally connected with the rotating shaft, the upper surface of the rotating shaft is fixedly connected with the fixing plate, the upper surface of the fixing plate is fixedly connected with the connecting rod, the side surface of the connecting rod is penetratingly connected with the connecting shaft, the side surface of the connecting shaft is fixedly connected with the fixing rod, the side surface of the connecting shaft is fixedly connected with the first spring, and the side surface of the first spring is fixedly connected with the clamping block.

[0009] As a preferred scheme of the alternating current ice melting expansion type voltage regulating device for power distribution lines of the present application, wherein: the protection mechanism comprises a fixing column, a limiting hole, an extension column, a second spring and a clamping bolt, the upper surface of the transformer is fixedly connected with the fixing column, the side surface of the fixing column is provided with the limiting hole, the inner side surface of the fixing column is slidingly connected with the extension column, the side surface of the extension column is fixedly connected with the second spring, and the side surface of the second spring is fixedly connected with the clamping bolt.

[0010] As a preferred scheme of the alternating current ice melting expansion type voltage regulating device for power distribution lines of the present application, wherein: the upper surface of the extension column is fixedly connected with a protection plate.

[0011] As a preferred scheme of the alternating current ice melting expansion type voltage regulating device for power distribution lines of the present application, wherein: the side surface of the water pump is fixedly connected with a cooling pipe, and the other side surface of the water pump is fixedly connected with a water delivery pipe.

[0012] As a preferred scheme of the alternating current ice melting expansion type voltage regulating device for power distribution lines of the present application, wherein: the heat dissipation holes are equidistantly arranged on the side surface of the corrugated heat sink, and the cooling pipe penetrates through the side surface of the corrugated heat sink.

[0013] As a preferred scheme of the alternating current ice melting expansion type voltage regulating device for power distribution lines of the present application, wherein: the first spring and the clamping block constitute a clamping structure, and the fixing seat and the rotating shaft constitute a rotating structure.

[0014] As a preferred scheme of the alternating current ice melting expansion type voltage regulating device for power distribution lines of the present application, wherein: the limiting holes are equidistantly arranged on the side surface of the fixing column, and the second spring and the clamping bolt constitute an extension structure.

[0015] As a preferred scheme of the alternating current ice melting expansion type voltage regulating device for power distribution lines of the present application, wherein: the inner wall size of the limiting hole matches the outer wall size of the clamping bolt, and the fixing column and the extension column constitute an extension structure.

[0016] The utility model discloses a beneficial effect of the expansion type voltage regulating device for the alternating current ice melting of distribution line: the utility model discloses through the setting of corrugated radiator, heat dissipation hole, cooling pipe, water pump, water delivery pipe and water tank, the heat generated in the operation process of transformer can be effectively dissipated, ensure the stable operation of equipment, the corrugated radiator adopts special material, has excellent heat dissipation performance, and the heat dissipation hole on its surface makes the air circulation more smooth, thereby improving the heat dissipation efficiency, when the temperature in the transformer rises, the water pump starts, and the cooling liquid in the water tank is circulated and delivered to the corrugated radiator through the cooling pipe, and the heat is absorbed and carried away through the flow of the cooling liquid, and then is returned to the water tank through the water delivery pipe to cool down and circulate, forming a complete heat dissipation system.

[0017] The utility model discloses a beneficial effect of the expansion type voltage regulating device for the alternating current ice melting of distribution line: through the setting of fixed seat, pivot, fixed plate, connecting rod, connecting shaft, fixed link, first spring and clamping block, the fixed position of electric wire can be flexibly adjusted in the installation process, and the stability and adaptability of installation are enhanced, and the fixed seat is stably connected on the upper surface of transformer as the basis of whole fixed mechanism, provides solid support, and the pivot makes the fixed plate can rotate around it, thereby adapting the demand of different installation angles, then the connecting rod and connecting shaft ensure the stable connection of fixed link, also allow it to carry out fine adjustment within a certain range, and the first spring and clamping block further enhance the locking capacity of fixed mechanism, and when installing electric wire, the clamping block can be pressed to make electric wire fixed into fixed link, ensure that the whole electric wire can be firmly fixed in the specified position after installation is completed, and it is not easy to loosen or fall off.

[0018] The utility model discloses a beneficial effect of the expansion type voltage regulating device for the alternating current ice melting of distribution line: through the setting of fixed column, limit hole, telescopic column, second spring, clamping bolt and protection board, when ice and snow, can provide additional protective barrier for transformer, effectively resist the invasion and damage of ice and snow to equipment, and the fixed column is firmly installed on the upper surface of transformer as the support point, ensure the stability of whole protection structure, and the limit hole limits the movement range of telescopic column, also as the locking point of clamping bolt, enhance the fixed effect of protection board, and the telescopic column can flexibly extend under the action of clamping bolt, when encountering ice and snow accumulation, the protection board is driven to contract inwards under the action of external force, at this moment, the second spring cooperates with clamping bolt and is locked through limit hole, prevents the accidental falling of protection board, and further improves the protection effect.

[0019] The utility model also proposes a kind of expansion type voltage regulating method for the alternating current ice melting of distribution line, it is applied to the expansion type voltage regulating device for the alternating current ice melting of distribution line, including,

[0020] Collecting data required for transformer ice melting;

[0021] Line ice melting length analysis;

[0022] The ice-melting line branch is disconnected;

[0023] The ice-melting short-circuit point is operated;

[0024] The ice-melting is started by the ice-melting current;

[0025] The ice-melting device is disconnected after the ice-melting is finished.

[0026] The method has the advantages that the three-phase of the 10kV distribution network line can be simultaneously ice-melted, the full-line ice-melting of the long-distance 10kV distribution network line is realized, the ice-melting time is short, the branch line to be disconnected is less, the ice-melting workload is small, the labor intensity of the distribution network artificial deicing can be greatly reduced, and the safety of the ice-melting process is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 It is a schematic diagram of the overall appearance structure of the present application;

[0029] Figure 2 It is a schematic diagram of the structure of the fixed seat and the rotating shaft used together in the present application;

[0030] Figure 3 It is a schematic diagram of the structure of the cooling mechanism in the present application;

[0031] Figure 4 It is a schematic diagram of the structure of the fixed seat and the rotating shaft used together in the present application; Figure 2 It is an enlarged schematic diagram of position A in the present application;

[0032] Figure 5 It is a schematic diagram of the structure of the protection mechanism in the present application;

[0033] Figure 6 It is an enlarged schematic diagram of position B in the present application; Figure 5

[0034] Figure 7 It is a schematic diagram of the structure of the ice-melting method of the distribution network line in the present application.

[0035] ​As shown in the figure, 1 is a transformer, 2 is a cooling mechanism, 201 is a corrugated radiator, 202 is a heat dissipation hole, 203 is a cooling pipe, 204 is a water pump, 205 is a water delivery pipe, 206 is a water tank, 3 is a fixing mechanism, 301 is a fixing seat, 302 is a rotating shaft, 303 is a fixing plate, 304 is a connecting rod, 305 is a connecting shaft, 306 is a fixing rod, 307 is a first spring, 308 is a clamping block, 4 is a protection mechanism, 401 is a fixing column, 402 is a limiting hole, 403 is a telescopic column, 404 is a second spring, 405 is a clamping bolt, 406 is a protection plate, 5 is a high-voltage terminal, 6 is a hanging plate column, 7 is an oil level meter, 8 is a low-voltage terminal. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0037] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0038] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is separate or alternative to other embodiments.

[0039] Embodiment 1, reference Figures 1 to 7 For the first embodiment of the present application, the embodiment provides an alternating current ice melting expansion type voltage regulating device for power distribution lines, which comprises a transformer 1, a cooling mechanism 2 is arranged on one side surface of the transformer 1, a fixing mechanism 3 is arranged on the upper surface of the transformer 1, a protection mechanism 4 is arranged on the upper surface of the transformer 1, a high-voltage terminal 5 is fixedly installed on the upper surface of the transformer 1, a hanging plate column 6 is fixedly installed on the upper surface of the transformer 1, an oil level meter 7 is fixedly installed on the upper surface of the transformer 1, and a low-voltage terminal 8 is fixedly installed on the upper surface of the transformer 1.

[0040] The cooling mechanism 2 comprises a corrugated radiator 201, a heat dissipation hole 202, a cooling pipe 203, a water pump 204, a water conveying pipe 205 and a water tank 206, one side of the transformer 1 is fixedly connected with the corrugated radiator 201, the surface of one side of the corrugated radiator 201 is provided with the heat dissipation hole 202, the outer surface of the corrugated radiator 201 is connected with the cooling pipe 203 in penetration, the surface of one side of the cooling pipe 203 is fixedly connected with the water pump 204, the surface of one side of the water pump 204 is fixedly connected with the water conveying pipe 205, the surface of one side of the water conveying pipe 205 is fixedly connected with the water tank 206, through the arrangement of the corrugated radiator 201, the heat dissipation hole 202, the cooling pipe 203, the water pump 204, the water conveying pipe 205 and the water tank 206, the heat generated by the transformer 1 during operation can be effectively dissipated, and the stable operation of the equipment is ensured. The corrugated radiator 201 is made of special material and has excellent heat dissipation performance, the heat dissipation hole 202 on the surface makes the air circulation more smooth, thereby improving the heat dissipation efficiency, when the temperature in the transformer 1 rises, the water pump 204 starts, the cooling liquid in the water tank 206 is circulated and conveyed to the corrugated radiator 201 through the cooling pipe 203, the heat is absorbed and taken away through the flow of the cooling liquid, and then is returned to the water tank 206 through the water conveying pipe 205 to form a complete heat dissipation system.

[0041] Preferably, the fixing mechanism 3 comprises a fixing base 301, a rotating shaft 302, a fixing plate 303, a connecting rod 304, a connecting shaft 305, a fixing rod 306, a first spring 307 and a clamping block 308, the upper surface of the transformer 1 is fixedly connected with the fixing base 301, the upper surface of the fixing base 301 is rotatably connected with the rotating shaft 302, the upper surface of the rotating shaft 302 is fixedly connected with the fixing plate 303, the upper surface of the fixing plate 303 is fixedly connected with the connecting rod 304, one side surface of the connecting rod 304 penetrates through the connecting shaft 305, one side surface of the connecting shaft 305 is fixedly connected with the fixing rod 306, one side surface of the connecting shaft 305 is fixedly connected with the first spring 307, one side surface of the first spring 307 is fixedly connected with the clamping block 308, through the fixing base 301, the rotating shaft 302, the fixing plate 303, the connecting rod 304, the connecting shaft 305, the fixing rod 306, the first spring 307 and the clamping block 308, the fixing position of the electric wire can be flexibly adjusted during installation, the stability and adaptability of installation are enhanced, the fixing base 301 is stably connected to the upper surface of the transformer 1 as the basis of the whole fixing mechanism, firm support is provided, the rotating shaft 302 enables the fixing plate 303 to rotate around it, so as to adapt to the needs of different installation angles, then the connecting rod 304 and the connecting shaft 305 ensure the stable connection of the fixing rod 306 and also allow it to be finely adjusted within a certain range, while the first spring 307 and the clamping block 308 further enhance the locking ability of the fixing mechanism, the clamping block 308 can be pressed when the electric wire is installed to fix the electric wire into the fixing rod 306, so that after installation is completed, the whole electric wire can be firmly fixed at the specified position and is not easy to loosen or fall off.

[0042] Preferably, the protection mechanism 4 comprises a fixed column 401, a limiting hole 402, a telescopic column 403, a second spring 404, a clamping bolt 405 and a protection plate 406, the upper surface of the transformer 1 is fixedly connected with the fixed column 401, the side surface of the fixed column 401 is provided with the limiting hole 402, the inner side surface of the fixed column 401 is slidably connected with the telescopic column 403, the side surface of the telescopic column 403 is fixedly connected with the second spring 404, the side surface of the second spring 404 is fixedly connected with the clamping bolt 405, and the upper surface of the telescopic column 403 is fixedly connected with the protection plate 406, through the setting of the fixed column 401, the limiting hole 402, the telescopic column 403, the second spring 404, the clamping bolt 405 and the protection plate 406, the transformer can be provided with an additional protection barrier in the ice and snow days, effectively resisting the invasion and damage of ice and snow to the equipment, the fixed column 401 is used as a support point and is firmly installed on the upper surface of the transformer 1, so that the stability of the whole protection structure is ensured, the limiting hole 402 limits the movement range of the telescopic column 403 and is also used as a locking point of the clamping bolt 405, so that the fixing effect of the protection plate 406 is enhanced, the telescopic column 403 can be flexibly telescoped under the action of the clamping bolt 405, when the ice and snow are accumulated, the protection plate 406 is driven to shrink inward under the action of external force, at this time, the second spring 404 cooperates with the clamping bolt 405 to be locked through the limiting hole 402, so that the protection plate 406 is prevented from accidentally falling off, and the protection effect is further improved, and the protection plate 406 is made of high-strength and low-temperature-resistant material.

[0043] It should be noted that the side surface of the water pump 204 is fixedly connected with the cooling pipe 203, and the other side surface of the water pump 204 is fixedly connected with the water conveying pipe 205, through the setting of the cooling pipe 203, the cooling liquid can form an efficient circulation path between the transformer and the water tank.

[0044] Among them, the heat dissipation holes 202 are evenly arranged on the side surface of the corrugated radiator 201, and the cooling pipes 203 penetrate through the side surfaces of the plurality of corrugated radiators 201, through the setting of the heat dissipation holes 202, the convection heat exchange between the air and the surface of the corrugated radiator 201 is further promoted, so that the heat can be more quickly dissipated to the environment.

[0045] Further, the first spring 307 and the clamping block 308 constitute a clamping structure, the fixed seat 301 and the rotating shaft 302 constitute a rotating structure, through the setting of the clamping block 308, the electric wire can be quickly and firmly locked on the fixed rod 306, avoiding the loosening problem that may occur in the traditional fixing mode, and enhancing the reliability and safety of the equipment operation.

[0046] Further, the limiting holes 402 are arranged at equal intervals on one side surface of the fixed column 401, the second spring 404 and the clasp 405 constitute a telescopic structure, through the arrangement of the limiting holes 402, not only the telescopic column 403 is provided with an accurate moving track, but also the stability of the clasp 405 in the locked state is ensured.

[0047] Further, the inner wall size of the limiting hole 402 matches the outer wall size of the clasp 405, the fixed column 401 and the telescopic column 403 constitute a telescopic structure, through the arrangement of the clasp 405, the distance between the protective plate 406 and the transformer 1 can be adjusted to adapt to the thickness change of the ice and snow accumulation under different climate conditions.

[0048] Working principle: when the internal temperature of the transformer 1 rises, the water pump 204 starts, and the cooling liquid in the water tank 206 is circulated and delivered to the corrugated radiator 201 through the cooling pipe 203, the heat is absorbed and taken away through the flow of the cooling liquid, and then it is returned to the water tank 206 through the water delivery pipe 205 for cooling circulation, forming a complete heat dissipation system, when the power line is connected, the fixed seat 301 serves as the basis of the entire fixing mechanism and is stably connected to the upper surface of the transformer 1, providing firm support, the rotating shaft 302 enables the fixed plate 303 to rotate around it, thereby adapting to the needs of different installation angles, then the connecting rod 304 and the connecting shaft 305 ensure the stable connection of the fixed rod 306 and also allow it to be fine-tuned within a certain range, while the first spring 307 and the clamping block 308 further enhance the locking ability of the fixing mechanism, the clamping block 308 can be pressed when the power line is installed to fix the power line into the fixed rod 306, ensuring that the entire power line can be firmly fixed at the specified position after installation and is not easy to loosen or fall off, so that the power line can be flexibly adjusted during installation, enhancing the stability and adaptability of the installation, in snowy weather, it can provide an additional protective barrier for the transformer to effectively resist the invasion and damage of ice and snow to the equipment, the fixed column 401 is firmly installed on the upper surface of the transformer 1 as a support point, ensuring the stability of the entire protective structure, the limiting hole 402 limits the movement range of the telescopic column 403 and also serves as the locking point of the clasp 405, enhancing the fixing effect of the protective plate 406, the telescopic column 403 can be flexibly telescoped under the action of the clasp 405, when encountering ice and snow accumulation, the protective plate 406 will drive the telescopic column 403 to contract inward under the action of external force, at this time, the second spring 404 cooperates with the clasp 405 to lock through the limiting hole 402 to prevent the protective plate 406 from accidentally falling off, further improving the protection effect, the protective plate 406 is made of high-strength, low-temperature-resistant material.

[0049] Embodiment 2, refer to Figures 1 to 7 , the second embodiment of the present application, which is different from the previous embodiment, provides a method for using the power distribution line AC ice melting expansion type voltage regulating device, the steps are as follows:

[0050] S1, collect data required for ice melting of transformer 1;

[0051] S2, analysis of ice melting length of line;

[0052] S3, disconnecting branch line of ice melting line;

[0053] S4, operation of ice melting shorting point;

[0054] S5, starting ice melting by ice melting current;

[0055] S6, disconnecting ice melting device after ending.

[0056] The three phases inside the distribution transformer can form a current loop, instead of only forming a current loop through the ice melting shorting point. This phenomenon can cause shunting of the ice melting current of the distribution line, that is, the ice melting current output by the ice melting device gradually decreases along the line, and the current at the end of the line can be much smaller than the expected value, so that the expected ice melting effect cannot be achieved. Moreover, when the distribution line uses DC ice melting, in order to avoid the problem of DC bias magnetization inside the distribution transformer caused by the ice melting current flowing through the distribution transformer, all high-voltage side switches of the distribution transformer along the line between the ice melting device access point and the shorting point must be disconnected during ice melting, and even the high-voltage side switches of the distribution transformer on the other side of the ice melting shorting point must be disconnected, otherwise a DC current loop will be formed through the high-voltage side of the distribution transformer. Therefore, before ice melting, the high-voltage side switches of the distribution transformer need to be pulled open and restored after ice melting is completed. When AC ice melting is used, although there is no problem of DC bias magnetization, if the distribution transformer is not pulled open, the ice melting voltage will be transmitted to the user side through the distribution transformer. Since the ice melting voltage is generally much lower than the normal power supply voltage, if the user mistakenly believes that the line is not live, operating the electrical equipment at this time can threaten personal safety. This method has strong practicability and is convenient to operate. It can simultaneously melt ice for the three phases of the 10kV distribution line, realize full-line ice melting of the long-distance 10kV distribution line, has short ice melting time, needs to disconnect few branch lines, has small ice melting workload, can greatly reduce the labor intensity of manual ice removal of the distribution network, and improve the safety of the ice melting process.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. An AC ice melting expansion type voltage regulating device for distribution lines, comprising a transformer (1), characterized in that: A cooling mechanism (2) is provided on one side surface of the transformer (1), a fixing mechanism (3) is provided on the upper surface of the transformer (1), a protection mechanism (4) is provided on the upper surface of the transformer (1), a high-voltage terminal (5) is fixedly mounted on the upper surface of the transformer (1), a hanging plate column (6) is fixedly mounted on the upper surface of the transformer (1), an oil level gauge (7) is fixedly mounted on the upper surface of the transformer (1), and a low-voltage terminal (8) is fixedly mounted on the upper surface of the transformer (1); The cooling mechanism (2) comprises a corrugated radiator (201), a heat dissipation hole (202), a cooling pipe (203), a water pump (204), a water delivery pipe (205) and a water tank (206); one side of the transformer (1) is fixedly connected to the corrugated radiator (201); a heat dissipation hole (202) is provided on one side surface of the corrugated radiator (201); a cooling pipe (203) is connected through the outer surface of the corrugated radiator (201); a water pump (204) is fixedly connected to one side surface of the cooling pipe (203); a water pump (204) is fixedly connected to one side surface of the water pump (204); and a water tank (206) is fixedly connected to one side surface of the water delivery pipe (205); The fixing mechanism (3) comprises a fixing seat (301), a rotating shaft (302), a fixing plate (303), a connecting rod (304), a connecting shaft (305), a fixing rod (306), a first spring (307) and a clamping block (308); the upper surface of the transformer (1) is fixedly connected to the fixing seat (301); the upper surface of the fixing seat (301) is rotatably connected to the rotating shaft (302); the upper surface of the rotating shaft (302) is fixedly connected to the fixing plate (303); the upper surface of the fixing plate (303) is fixedly connected to the connecting rod (304); a side surface of the connecting rod (304) is connected to the connecting shaft (305); a side surface of the connecting shaft (305) is fixedly connected to the fixing rod (306); a side surface of the connecting shaft (305) is fixedly connected to the first spring (307); and a side surface of the first spring (307) is fixedly connected to the clamping block (308).

2. The AC ice melting expansion type voltage regulating device for distribution lines according to claim 1, characterized in that: The protective mechanism (4) comprises a fixed column (401), a limiting hole (402), a telescopic column (403), a second spring (404) and a latch (405); the upper surface of the transformer (1) is fixedly connected to the fixed column (401); a limiting hole (402) is provided on one side surface of the fixed column (401); the inner side surface of the fixed column (401) is slidably connected to the telescopic column (403); the one side surface of the telescopic column (403) is fixedly connected to the second spring (404); and the one side surface of the second spring (404) is fixedly connected to the latch (405).

3. The AC ice melting expansion type voltage regulating device for distribution lines according to claim 2, characterized in that: A protective plate (406) is fixedly connected to the upper surface of the telescopic column (403).

4. The AC ice melting expansion type voltage regulating device for distribution lines according to claim 3, characterized in that: A cooling pipe (203) is fixedly connected to a surface on one side of the water pump (204), and a water delivery pipe (205) is fixedly connected to a surface on the other side of the water pump (204).

5. The AC ice melting expansion type voltage regulating device for distribution lines according to claim 4, characterized in that: The heat dissipation holes (202) are opened at equal intervals on one side surface of the corrugated heat sink (201), and the cooling pipe (203) passes through the one side surfaces of multiple corrugated heat sinks (201).

6. The AC ice melting expansion type voltage regulating device for distribution lines according to claim 5, characterized in that: The first spring (307) and the clamping block (308) form a locking structure, and the fixing seat (301) and the rotating shaft (302) form a rotating structure.

7. The AC ice melting expansion type voltage regulating device for distribution lines according to claim 6, characterized in that: The limiting holes (402) are opened at equal intervals on one side surface of the fixing column (401), and the second spring (404) and the latch (405) form a telescopic structure.

8. The AC ice melting expansion type voltage regulating device for distribution lines according to claim 7, characterized in that: The inner wall size of the limiting hole (402) matches the outer wall size of the latch (405), and the fixed column (401) and the telescopic column (403) form a telescopic structure.

9. A method for AC ice melting and extended voltage regulation for distribution lines, applied to the AC ice melting and extended voltage regulation device for distribution lines according to any one of claims 1 to 8, characterized in that: include, Collect the data required for transformer (1) ice melting; Analysis of line ice melting length; The ice-melting line branch is disconnected; Ice melting short-circuit operation; Start ice melting current to melt ice; Disconnect the ice melter when finished.

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