CN116365535A - Compensation system, method and device for low-voltage power supply - Google Patents
Compensation system, method and device for low-voltage power supply Download PDFInfo
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- CN116365535A CN116365535A CN202310459869.1A CN202310459869A CN116365535A CN 116365535 A CN116365535 A CN 116365535A CN 202310459869 A CN202310459869 A CN 202310459869A CN 116365535 A CN116365535 A CN 116365535A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims abstract description 47
- 238000001514 detection method Methods 0.000 claims abstract description 34
- 230000001939 inductive effect Effects 0.000 claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 238000009423 ventilation Methods 0.000 claims description 29
- 238000003825 pressing Methods 0.000 claims description 12
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 5
- 238000012937 correction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention discloses a compensation system, a method and a device for low-voltage power supply, comprising a protection control module and an equipment management module positioned at the output end of the protection control module; the output end of the equipment management module is connected with a power compensation module, and the output end of the compensation capacitor is connected with an inductive load. This compensating system overcurrent detection unit of low pressure power supply can control the current transformer and detect compensating capacitor through the electric current, if the electric current is too big then adjusts the electric current through compensating capacitor through automatically regulated unit, avoid compensating capacitor because overload causes the damage, because compensating capacitor and switching contactor can rise in the twinkling of an eye when taking place short-circuit fault, and temperature detection unit can carry out temperature monitoring to compensating capacitor and switching contactor, if the temperature surpasses normal temperature then in time close the circuit through automatically regulated unit control circuit switching unit, and alarm unit can send alarm signal when the primordial qi piece takes place to damage and remind the staff in time to maintain.
Description
Technical Field
The invention relates to the technical field of low-voltage reactive power compensation, in particular to a low-voltage power supply compensation system, method and device.
Background
The low-voltage reactive power compensation device plays a role in an electronic power supply system in improving the power factor of a power grid, reducing the loss of a power supply transformer and a transmission line, improving the power supply efficiency and improving the power supply environment.
Through searching, a high-low voltage distribution network automatic reactive power compensation system with the publication number of CN103401255A comprises: the system comprises an SVG module, an operation data monitoring module, a temperature detection module, an SVG control module and a communication bus. The SVG control module determines reactive compensation quantity delta P according to the transmitted operation parameters, and controls a switching unit of the SVG module to switch a proper amount of capacitors into the power distribution network according to the delta P so as to realize reactive compensation; the temperature detection module transmits the detected real-time temperature value of each component in the SVG module to the SVG control module through the communication bus 3 in real time, the SVG control module compares the real-time temperature value of each component with a set value, and if the temperature value of a certain component or certain components is found to be higher than the set value by a certain threshold value, a cooling unit in the SVG module is started to cool the relevant components of the SVG module so as to ensure the safe operation of the reactive compensation system.
A low voltage distribution network reactive power compensation system of publication number CN104333017a, comprising: the system comprises a master station module, a reactive compensation module, a distribution transformer terminal module, an equipment asset management module and a man-machine interaction module; the reactive compensation module is connected with the distribution transformer terminal module through a wireless network, and the distribution transformer terminal module transmits the integrated and uniformly scheduled data to the master station module through the wireless network; the equipment asset management module transmits the information of all equipment assets in the system to the master station module, and the man-machine interaction module responds to the operation of an operator and sends out corresponding instructions. The system has a good communication function, realizes the bidirectional information transmission between the reactive compensation module and the master station module, and when a fault occurs, a user at the master station module can immediately know equipment resource information at the fault and send a fault-clearing instruction to a department or a person nearest to the fault through the man-machine interaction module.
In the actual application process of the low-voltage compensation capacitor cabinet, some faults often occur due to environmental problems or improper operation management, for example: the capacitor is damaged due to overload or undercurrent, so that reactive compensation effect is seriously affected, and most of the existing systems are not provided with protection structures for components which are easy to damage, such as the capacitor, and therefore, a compensation system, a compensation method and a compensation device for low-voltage power supply are provided.
Disclosure of Invention
The invention aims to provide a low-voltage power supply compensation system, a low-voltage power supply compensation method and a low-voltage power supply compensation device, so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a compensation system for low-voltage power supply comprises a protection control module and an equipment management module positioned at the output end of the protection control module;
the output end of the equipment management module is connected with a power compensation module, the output end of the power compensation module is connected with a circuit breaker, the output end of the circuit breaker is connected with a compensation capacitor, the output end of the compensation capacitor is connected with an inductive load, the output end of the equipment management module is connected with a current transformer, the output end of the power compensation module is connected with an automatic compensation controller, and the output end of the automatic compensation controller is respectively connected with a change-over switch, a thermal overload relay and a switching contactor.
Preferably, the protection control module comprises a temperature detection unit, an automatic adjusting unit, an alarm unit, an overcurrent detection unit and a circuit switching unit, wherein the output end of the current transformer is connected with the overcurrent detection unit, the output end of the overcurrent detection unit is connected with the automatic adjusting unit, the input end of the automatic adjusting unit is connected with the temperature detection unit, and the output end of the automatic adjusting unit is respectively connected with the alarm unit and the circuit switching unit.
Preferably, the current transformer is electrically connected with the inductive load, the automatic compensation controller and the overcurrent detection unit respectively, and the current transformer is electrically connected with the power compensation module.
Preferably, the overcurrent detection unit and the overcurrent detection unit are electrically connected in series with the automatic adjustment unit, and the alarm unit and the circuit switching unit are electrically connected in series with the automatic adjustment unit.
Preferably, the protection control module and the equipment management module are electrically connected with the inductive load, and the automatic compensation controller, the thermal overload relay and the switching contactor are electrically connected.
Preferably, the compensation method comprises the following steps:
s1, an automatic compensation controller automatically outputs a proper capacitor when the inductive load works, and reactive power compensation is performed on the inductive load through a thermal overload relay and a switching contactor;
s2, the equipment management module detects the compensation current passing through the inductive load through the current transformer, and feeds back a monitoring result to the power compensation module for comparison and correction;
s3, detecting the passing current of the compensation capacitor through the corresponding current transformer by the overcurrent detection unit, and adjusting the current passing through the compensation capacitor through the automatic adjusting unit to avoid damage caused by overload;
s4, the temperature detection unit monitors the temperature of the compensation capacitor and the switching contactor at the same time, and when the temperature exceeds the normal temperature, the automatic adjustment unit controls the circuit switching unit to close the circuit so as to avoid short circuit;
s5, after the automatic adjusting unit is used for adjusting, the compensating capacitor and the switching contactor still cannot be normally used, and the alarm unit sends out an alarm signal to remind workers of timely maintenance.
Preferably, the low-voltage power supply compensation device comprises a compensation device shell and a heat dissipation and ventilation structure arranged on the surface of the compensation device shell;
the inner wall of compensation arrangement casing is provided with the installation montant, and the mid-mounting of installation montant has the installation horizontal pole.
Preferably, the heat dissipation ventilation structure comprises a ventilation fan, one side of the ventilation fan is provided with a ventilation plate, two groups of ventilation fans are arranged in an up-down staggered mode, and the ventilation fan is of a hollowed-out net structure.
Preferably, a movable rod is arranged above the ventilator, a reset spring is sleeved on the surface of the movable rod, a limiting block is arranged at the bottom of the movable rod, and a pressing plate is arranged above the movable rod.
Preferably, the limiting block is elastically connected with the compensation device shell through a return spring, the movable rod penetrates through the compensation device shell, and the pressing plate is movably connected with the movable rod.
The above description shows that, by the above technical solution of the present application, the technical problem to be solved by the present application can be necessarily solved.
Meanwhile, through the technical scheme, the invention has at least the following beneficial effects:
according to the invention, the current transformer can be controlled to detect the passing current of the compensation capacitor through the overcurrent detection unit, if the current is too large, the current passing through the compensation capacitor is regulated through the automatic regulation unit, so that damage to the compensation capacitor caused by overload is avoided, as the compensation capacitor and the switching contactor are heated instantly when short-circuit faults occur, the temperature detection unit can monitor the temperature of the compensation capacitor and the switching contactor, when the temperature exceeds the normal temperature, the circuit switching unit is controlled to close a circuit in time through the automatic regulation unit, and the alarm unit can send an alarm signal to remind workers of timely maintenance when a primordial gas piece is damaged;
the invention has the advantages that the two groups of ventilation fans distributed in a staggered way can realize rapid heat exchange in the compensation device shell, the ventilation fans on the upper side suck cold air and then flow downwards, and the hot air in the compensation device shell is discharged through the ventilation fans on the lower side, so that the air flow rate in the compensation device shell is accelerated, and the influence on the compensation effect due to overhigh heat in the compensation device shell is avoided;
the quick-release structure is arranged between the ventilation plate and the compensation device shell, the movable rod and the limiting block can move downwards by pressing the pressing plate downwards, the reset spring is stretched, and the movable rod is separated from the compensation device shell after entering the ventilation plate, so that dust on the surface of the ventilation plate can be cleaned conveniently.
Drawings
FIG. 1 is a schematic of the overall workflow of the present invention;
FIG. 2 is a schematic diagram of the workflow of the automatic compensation controller of the present invention;
FIG. 3 is a schematic diagram of a workflow of the protection control module of the present invention;
FIG. 4 is a schematic diagram of the workflow of the automatic adjustment unit of the present invention;
FIG. 5 is a schematic view of the structure of the housing of the compensation device of the present invention;
FIG. 6 is a schematic view of the internal structure of the housing of the compensation device of the present invention;
fig. 7 is an enlarged schematic view of the structure of fig. 6 a according to the present invention.
In the figure: 1. a protection control module; 101. a temperature detection unit; 102. an automatic adjustment unit; 103. an alarm unit; 104. an overcurrent detection unit; 105. a line switching unit; 2. an equipment management module; 3. a power compensation module; 4. a circuit breaker; 5. a compensation capacitor; 6. an inductive load; 7. a current transformer; 8. an automatic compensation controller; 9. a change-over switch; 10. a thermal overload relay; 11. a switching contactor; 12. a compensation device housing; 13. a ventilation plate; 14. mounting a cross bar; 15. mounting a vertical rod; 16. a ventilator; 17. a pressing plate; 18. a movable rod; 19. a return spring; 20. and a limiting block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Description of the preferred embodiments
As shown in fig. 1 and 2, the present invention provides a technical solution: a compensation system for low-voltage power supply comprises a protection control module 1 and an equipment management module 2 positioned at the output end of the protection control module 1;
the output end of the equipment management module 2 is connected with the power compensation module 3, the output end of the power compensation module 3 is connected with the circuit breaker 4, and the output end of the circuit breaker 4 is connected with the compensation capacitor 5, the output end of the compensation capacitor 5 is connected with the inductive load 6, the output end of the equipment management module 2 is connected with the current transformer 7, the output end of the power compensation module 3 is connected with the automatic compensation controller 8, the output end of the automatic compensation controller 8 is respectively connected with the change-over switch 9, the thermal overload relay 10 and the switching contactor 11, the protection control module 1, the equipment management module 2 are electrically connected with the inductive load 6, and the automatic compensation controller 8, the thermal overload relay 10 and the switching contactor 11 are electrically connected.
As shown in fig. 1-4, the present invention provides a technical solution: the compensation method of the low-voltage power supply comprises the following steps:
s1, an automatic compensation controller 8 automatically outputs a proper capacitor when an inductive load 6 works, and reactive power compensation is carried out on the inductive load 6 through a thermal overload relay 10 and a switching contactor 11;
s2, the equipment management module 2 detects the compensation current passing through the inductive load 6 through the current transformer 7, and feeds back the monitoring result to the power compensation module 3 for comparison and correction;
s3, the overcurrent detection unit 104 detects the current passing through the compensation capacitor 5 through the corresponding current transformer 7, and adjusts the current passing through the compensation capacitor 5 through the automatic adjustment unit 102, so that damage caused by overload is avoided;
s4, the temperature detection unit 101 monitors the temperature of the compensation capacitor 5 and the switching contactor 11 at the same time, and when the temperature exceeds the normal temperature, the automatic adjustment unit 102 controls the circuit switching unit 105 to close a circuit so as to avoid short circuit;
s5, after the automatic adjusting unit 102 is used for adjusting, the compensation capacitor 5 and the switching contactor 11 are still not normally used, and the alarm unit 103 sends out an alarm signal to remind a worker of timely maintenance.
Example two
The scheme in the first embodiment is further described below in conjunction with a specific working manner, and the details are described below:
as shown in fig. 3 and fig. 4, as a preferred embodiment, further, based on the above manner, the protection control module 1 includes a temperature detecting unit 101, an automatic adjusting unit 102, an alarm unit 103, an overcurrent detecting unit 104 and a line switching unit 105, an output end of the current transformer 7 is connected with the overcurrent detecting unit 104, an output end of the overcurrent detecting unit 104 is connected with the automatic adjusting unit 102, an input end of the automatic adjusting unit 102 is connected with the temperature detecting unit 101, an output end of the automatic adjusting unit 102 is connected with the alarm unit 103 and the line switching unit 105, the current transformer 7 is electrically connected with the inductive load 6, the automatic compensation controller 8 and the overcurrent detecting unit 104, the current transformer 7 is electrically connected with the power compensating module 3, the overcurrent detecting unit 104 and the overcurrent detecting unit 104 are electrically connected with the automatic adjusting unit 102 in series, and the alarm unit 103 and the line switching unit 105 are electrically connected with the automatic adjusting unit 102 in series.
Description of the preferred embodiments
As shown in fig. 1 and 6, the present invention provides a technical solution: a compensating device for low-voltage power supply comprises a compensating device shell 12 and a heat dissipation and ventilation structure arranged on the surface of the compensating device shell 12;
the inner wall of compensation device casing 12 is provided with installation montant 15, and the mid-mounting of installation montant 15 has installation horizontal pole 14, the heat dissipation ventilation structure includes ventilator 16, one side of ventilator 16 is provided with ventilative board 13, and two sets of ventilators 16 are crisscross setting from top to bottom, ventilator 16 is hollow out network structure, the top of ventilator 16 is provided with movable rod 18, and the surface cover of movable rod 18 is equipped with reset spring 19, the bottom of movable rod 18 is provided with stopper 20, the top of movable rod 18 is provided with clamp plate 17, stopper 20 passes through reset spring 19 and compensation device casing 12 elastic connection, and movable rod 18 runs through in the inside of compensation device casing 12, and clamp plate 17 and movable rod 18 swing joint, the ventilator 16 of upside inhales cold air and flows downwards, and the hot air of inside then is discharged through ventilator 16 of downside, can realize the quick flow of cold and hot air, make the inside air flow rate of compensation device casing 12 accelerate, thereby avoid because of the excessive heat of compensation effect of compensation device casing 12, and after long-term use can make movable rod 18 and stopper 20 move down through pressing clamp plate 17, the stopper 20, the mutual air-permeable board 13 is separated to the movable rod 18, the mutual dust is convenient for cleaning device 13.
From the above, it can be seen that:
the invention aims at the technical problems that: most of the existing systems do not have the protection structure problem of easily damaged parts such as capacitors; the technical scheme of each embodiment is adopted. Meanwhile, the implementation process of the technical scheme is as follows:
the automatic compensation controller 8 automatically outputs proper capacitance when the inductive load 6 works, and reactive power compensation is carried out on the inductive load 6 through the thermal overload relay 10 and the switching contactor 11; the equipment management module 2 detects the compensation current passing through the inductive load 6 through the current transformer 7, and feeds back the monitoring result to the power compensation module 3 for comparison and correction; the overcurrent detection unit 104 detects the current passing through the compensation capacitor 5 through the corresponding current transformer 7, and adjusts the current passing through the compensation capacitor 5 through the automatic adjustment unit 102, so that damage caused by overload is avoided; the temperature detection unit 101 monitors the temperature of the compensation capacitor 5 and the switching contactor 11 at the same time, and when the temperature exceeds the normal temperature, the automatic adjustment unit 102 controls the line switching unit 105 to close the line so as to avoid short circuit; after the automatic regulating unit 102 regulates that the compensation capacitor 5 and the switching contactor 11 still cannot be normally used, the alarm unit 103 sends an alarm signal to remind workers of timely maintenance, when the compensation device shell 12 needs to be subjected to rapid heat dissipation, the upper ventilating fan 16 sucks cold air and then flows downwards, the inside hot air is discharged through the lower ventilating fan 16, the rapid flow of the cold air and the hot air can be realized, the air flow rate in the compensation device shell 12 is accelerated, the compensation effect is prevented from being influenced by the excessive heat in the compensation device shell 12, after long-term use, the movable rod 18 and the limiting block 20 can be downwards moved by downwards pressing the pressing plate 17, the reset spring 19 is stretched, the movable rod 18 is separated from the compensation device shell 12 after entering the ventilating plate 13, the dust on the surface of the ventilating plate 13 is conveniently cleaned, and the use is more convenient;
through above-mentioned setting, this application must solve above-mentioned technical problem, simultaneously, realizes following technical effect:
according to the invention, the current transformer 7 can be controlled by the overcurrent detection unit 104 to detect the passing current of the compensation capacitor 5, if the current is too large, the current passing through the compensation capacitor 5 is regulated by the automatic regulation unit 102, so that the damage of the compensation capacitor 5 caused by overload is avoided, the temperature of the compensation capacitor 5 and the switching contactor 11 can be instantaneously raised when a short circuit fault occurs, the temperature detection unit 101 can monitor the temperature of the compensation capacitor 5 and the switching contactor 11, when the temperature exceeds the normal temperature, the circuit switching unit 105 is controlled by the automatic regulation unit 102 to close a circuit in time, and the alarm unit 103 can send an alarm signal to remind a worker to maintain in time when a primordial gas piece is damaged;
the invention is provided with the two groups of ventilation fans 16 which are distributed in a staggered way, so that the quick heat exchange in the compensation device shell 12 can be realized, the ventilation fan 16 at the upper side sucks cold air and then flows downwards, and the hot air in the compensation device shell 12 is discharged through the ventilation fan 16 at the lower side, so that the air flow rate in the compensation device shell 12 is accelerated, and the influence on the compensation effect due to the overhigh heat in the compensation device shell 12 is avoided;
a quick-release structure is arranged between the ventilation plate 13 and the compensation device shell 12, the movable rod 18 and the limiting block 20 can be moved downwards by pressing the pressing plate 17 downwards, and the reset spring 19 is stretched, so that the movable rod 18 is separated from the compensation device shell 12 after entering the ventilation plate 13, and dust on the surface of the ventilation plate 13 can be conveniently cleaned.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The low-voltage power supply compensation system is characterized by comprising a protection control module (1) and an equipment management module (2) positioned at the output end of the protection control module (1);
the device comprises a device management module (2), wherein the output end of the device management module (2) is connected with a power compensation module (3), the output end of the power compensation module (3) is connected with a circuit breaker (4), the output end of the circuit breaker (4) is connected with a compensation capacitor (5), the output end of the compensation capacitor (5) is connected with an inductive load (6), the output end of the device management module (2) is connected with a current transformer (7), the output end of the power compensation module (3) is connected with an automatic compensation controller (8), and the output end of the automatic compensation controller (8) is respectively connected with a change-over switch (9), a thermal overload relay (10) and a switching contactor (11).
2. The low-voltage power supply compensation system according to claim 1, wherein the protection control module (1) comprises a temperature detection unit (101), an automatic adjustment unit (102), an alarm unit (103), an overcurrent detection unit (104) and a line switching unit (105), the output end of the current transformer (7) is connected with the overcurrent detection unit (104), the output end of the overcurrent detection unit (104) is connected with the automatic adjustment unit (102), the input end of the automatic adjustment unit (102) is connected with the temperature detection unit (101), and the output end of the automatic adjustment unit (102) is respectively connected with the alarm unit (103) and the line switching unit (105).
3. The low-voltage power supply compensation system according to claim 2, wherein the current transformer (7) is electrically connected to the inductive load (6), the automatic compensation controller (8) and the overcurrent detection unit (104), respectively, and the current transformer (7) is electrically connected to the power compensation module (3).
4. The low voltage powered compensation system of claim 2, wherein the over-current detection unit (104) and the over-current detection unit (104) are both electrically connected in series with the automatic adjustment unit (102), and the alarm unit (103) and the line switching unit (105) are both electrically connected in series with the automatic adjustment unit (102).
5. The low-voltage power supply compensation system according to claim 1, wherein the protection control module (1) and the equipment management module (2) are electrically connected with the inductive load (6), and the automatic compensation controller (8), the thermal overload relay (10) and the switching contactor (11) are electrically connected.
6. A method of compensating a low voltage powered compensation system according to any of claims 1-5, wherein said method of compensating comprises the steps of:
s1, an automatic compensation controller (8) automatically outputs a proper capacitor when the inductive load (6) works, and reactive power compensation is performed on the inductive load (6) through a thermal overload relay (10) and a switching contactor (11);
s2, the equipment management module (2) detects the compensation current passing through the inductive load (6) through the current transformer (7), and feeds back the monitoring result to the power compensation module (3) for comparison and correction;
s3, an overcurrent detection unit (104) detects the passing current of the compensation capacitor (5) through a corresponding current transformer (7), and the current passing through the compensation capacitor (5) is regulated through an automatic regulation unit (102), so that damage caused by overload is avoided;
s4, the temperature detection unit (101) monitors the temperature of the compensation capacitor (5) and the switching contactor (11) at the same time, and when the temperature exceeds the normal temperature, the automatic regulation unit (102) controls the circuit switching unit (105) to close the circuit so as to avoid short circuit;
s5, after the automatic adjusting unit (102) is used for adjusting, the compensating capacitor (5) and the switching contactor (11) can not be normally used, and the alarm unit (103) sends out an alarm signal to remind workers of timely maintenance.
7. The low-voltage power supply compensation device is characterized by comprising a compensation device shell (12) and a heat dissipation and ventilation structure arranged on the surface of the compensation device shell (12);
the inner wall of the compensation device shell (12) is provided with a mounting vertical rod (15), and the middle part of the mounting vertical rod (15) is provided with a mounting cross rod (14).
8. The low-voltage power supply compensation device according to claim 7, wherein the heat dissipation ventilation structure comprises ventilation fans (16), one side of each ventilation fan (16) is provided with a ventilation plate (13), two groups of ventilation fans (16) are arranged in an up-down staggered mode, and each ventilation fan (16) is of a hollowed-out net structure.
9. The low-voltage power supply compensation device according to claim 8, wherein a movable rod (18) is arranged above the ventilator (16), a return spring (19) is sleeved on the surface of the movable rod (18), a limiting block (20) is arranged at the bottom of the movable rod (18), and a pressing plate (17) is arranged above the movable rod (18).
10. The low-voltage power supply compensation device according to claim 9, wherein the limiting block (20) is elastically connected with the compensation device shell (12) through a return spring (19), the movable rod (18) penetrates through the compensation device shell (12), and the pressing plate (17) is movably connected with the movable rod (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310459869.1A CN116365535A (en) | 2023-04-24 | 2023-04-24 | Compensation system, method and device for low-voltage power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310459869.1A CN116365535A (en) | 2023-04-24 | 2023-04-24 | Compensation system, method and device for low-voltage power supply |
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| CN116365535A true CN116365535A (en) | 2023-06-30 |
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| CN202310459869.1A Pending CN116365535A (en) | 2023-04-24 | 2023-04-24 | Compensation system, method and device for low-voltage power supply |
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| JPH08147057A (en) * | 1994-11-25 | 1996-06-07 | Mitsubishi Electric Corp | Device and method for generating reactive power |
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| CN104221982A (en) * | 2014-08-28 | 2014-12-24 | 中国农业大学 | Fish, vegetable and edible fungus symbiotic system in greenhouse |
| KR20160040415A (en) * | 2015-05-26 | 2016-04-14 | 주식회사 이플러스 | Intelligent Switching Module For Capacitor |
| CN112713601A (en) * | 2020-12-24 | 2021-04-27 | 南京卡鹏科技有限公司 | Low-voltage reactive compensation controller |
| CN213457932U (en) * | 2020-12-17 | 2021-06-15 | 邢台医学高等专科学校 | Explosion-proof type computer case that computer used |
| CN213931475U (en) * | 2020-09-08 | 2021-08-10 | 李东亮 | Indoor general electric fan heater fixing device |
| CN215579920U (en) * | 2021-07-14 | 2022-01-18 | 盐城邦瑞电气有限公司 | Novel distribution control cabinet |
| CN216050015U (en) * | 2021-08-11 | 2022-03-15 | 武汉通欣电气有限公司 | Reactive power compensation device detecting system |
| CN216083629U (en) * | 2021-08-20 | 2022-03-18 | 湖北精诚伟业科技有限公司 | Power fan with quick-release structure for computer |
| CN114566974A (en) * | 2022-02-18 | 2022-05-31 | 国网浙江省电力有限公司宁海县供电公司 | Movable reactive power compensation device |
| CN218298905U (en) * | 2022-08-23 | 2023-01-13 | 泉州工艺美术职业学院 | Computer machine case convenient to heat dissipation |
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2023
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| CN103441511A (en) * | 2013-08-14 | 2013-12-11 | 毛振刚 | Intelligent low-voltage dynamic-compensation energy-saving filtering device |
| CN104221982A (en) * | 2014-08-28 | 2014-12-24 | 中国农业大学 | Fish, vegetable and edible fungus symbiotic system in greenhouse |
| KR20160040415A (en) * | 2015-05-26 | 2016-04-14 | 주식회사 이플러스 | Intelligent Switching Module For Capacitor |
| CN213931475U (en) * | 2020-09-08 | 2021-08-10 | 李东亮 | Indoor general electric fan heater fixing device |
| CN213457932U (en) * | 2020-12-17 | 2021-06-15 | 邢台医学高等专科学校 | Explosion-proof type computer case that computer used |
| CN112713601A (en) * | 2020-12-24 | 2021-04-27 | 南京卡鹏科技有限公司 | Low-voltage reactive compensation controller |
| CN215579920U (en) * | 2021-07-14 | 2022-01-18 | 盐城邦瑞电气有限公司 | Novel distribution control cabinet |
| CN216050015U (en) * | 2021-08-11 | 2022-03-15 | 武汉通欣电气有限公司 | Reactive power compensation device detecting system |
| CN216083629U (en) * | 2021-08-20 | 2022-03-18 | 湖北精诚伟业科技有限公司 | Power fan with quick-release structure for computer |
| CN114566974A (en) * | 2022-02-18 | 2022-05-31 | 国网浙江省电力有限公司宁海县供电公司 | Movable reactive power compensation device |
| CN218298905U (en) * | 2022-08-23 | 2023-01-13 | 泉州工艺美术职业学院 | Computer machine case convenient to heat dissipation |
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