CN116914867A - Energy and power supply device and method for secondary fusion on-pole circuit breaker - Google Patents
Energy and power supply device and method for secondary fusion on-pole circuit breaker Download PDFInfo
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- CN116914867A CN116914867A CN202311181411.0A CN202311181411A CN116914867A CN 116914867 A CN116914867 A CN 116914867A CN 202311181411 A CN202311181411 A CN 202311181411A CN 116914867 A CN116914867 A CN 116914867A
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- 230000004927 fusion Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 84
- 239000003990 capacitor Substances 0.000 claims description 56
- 230000008569 process Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 abstract description 6
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000003860 storage Methods 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
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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
- H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
- H02M5/16—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of frequency
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/297—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal for conversion of frequency
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Abstract
The invention provides an energy-taking and power-supplying device and method of a secondary fusion on-column circuit breaker, and relates to the technical field of power distribution equipment, wherein the energy-taking and power-supplying device comprises: the power supply input circuit is connected with one end of the power supply; the AC-AC conversion circuit is connected with the other end of the power input circuit and the other end of the power supply respectively, wherein the AC-AC conversion circuit is formed by connecting N AC-AC conversion sub-circuits in parallel, and N is an integer greater than 1; and one side of the AC-DC conversion circuit is connected with the other side of the AC-AC conversion circuit, and the other side of the AC-DC conversion circuit is connected with the circuit breaker on the secondary fusion column. The energy taking and power supplying device of the secondary fusion on-column circuit breaker is high in energy taking efficiency, larger in output electric energy and capable of meeting energy taking requirements of edge calculation.
Description
Technical Field
The invention relates to the technical field of power distribution equipment, in particular to an energy and power taking device and method for a secondary fusion on-column circuit breaker.
Background
The intelligent monitoring system of the secondary fusion on-column circuit breaker generally utilizes advanced sensor technology and Internet of things technology to perform edge calculation on-site processing on digital information through the running states of various sensor acquisition devices. And selecting a sensor which has the same service life as the primary equipment, is low in cost and high in efficiency, and realizing the fusion design and manufacture of the sensor and the collecting unit and the primary equipment body, wherein the equipment state monitoring sensing information is fused with the circuit electric quantity information. The health condition of the equipment is comprehensively mastered, and the state maintenance is realized. The edge internet of things agent gathers various sensing data, and analyzes various service models through edge calculation to realize dynamic evaluation of the on-column switch.
In the related art, the energy and power supply device of the circuit breaker on the secondary fusion column generally adopts voltage division capacitor power supply, ground wire power supply and other modes to perform energy and power supply, however, the modes have low energy efficiency and less output electric energy, so that the energy demand of edge calculation cannot be met.
Disclosure of Invention
The invention aims to solve the technical problems, and provides an energy taking and power supplying device and method for a secondary fusion on-column circuit breaker, which have high energy taking efficiency and larger output electric energy and can meet the energy taking requirement of edge calculation.
The technical scheme adopted by the invention is as follows:
an energy and power supply device of a secondary fusion on-pole circuit breaker, comprising: the power supply input circuit is connected with one end of the power supply; the AC-AC conversion circuit is connected with the other end of the power input circuit and the other end of the power supply respectively, wherein the AC-AC conversion circuit is formed by connecting N AC-AC conversion sub-circuits in parallel, and N is an integer greater than 1; and one side of the AC-DC conversion circuit is connected with the other side of the AC-AC conversion circuit, and the other side of the AC-DC conversion circuit is connected with the circuit breaker on the secondary fusion column.
In one embodiment of the present invention, the power input circuit includes: one end of the first inductor is connected with one end of the power supply, and the other end of the first inductor is connected with one side of the AC-AC conversion circuit; one end of the second inductor is connected with one end of the first inductor; and one end of the first resistor is connected with the other end of the second inductor, and the other end of the first resistor is connected with the other end of the first inductor.
In one embodiment of the invention, the AC-AC conversion sub-circuit comprises: a first switching tube, a first pole of which is used as a first input end of the AC-AC conversion sub-circuit; the second pole of the second switching tube is connected with the second pole of the first switching tube; the first pole of the third switching tube is connected with the first pole of the second switching tube; the second pole of the fourth switching tube is connected with the second pole of the third switching tube, and the first pole of the fourth switching tube is used as the second input end of the AC-AC conversion sub-circuit; one end of the first capacitor is connected with the first pole of the first switch tube; one end of the second capacitor is connected with the other end of the first capacitor, and the other end of the second capacitor is connected with the first pole of the fourth switching tube; one end of the third inductor is connected with the first pole of the second switching tube; one end of the fourth inductor is connected with the other end of the third inductor, and the other end of the fourth inductor is connected with one end of the second capacitor; one end of the primary side of the transformer is connected with the other end of the third inductor, and the other end of the primary side of the transformer is connected with the other end of the fourth inductor; one end of the third capacitor is connected with one end of the secondary side of the transformer; a second pole of the fifth switching tube is connected with the other end of the third capacitor, and a first pole of the fifth switching tube is used as a first output end of the AC-AC conversion sub-circuit; a sixth switching tube, wherein a first pole of the sixth switching tube is connected with a second pole of the fifth switching tube, and the second pole of the sixth switching tube is used as a second output end of the AC-AC conversion sub-circuit; a first pole of the seventh switching tube is connected with a first pole of the fifth switching tube, and a second pole of the seventh switching tube is connected with the other end of the secondary side of the transformer; the first pole of the eighth switching tube is connected with the second pole of the seventh switching tube, the second pole of the eighth switching tube is connected with the second pole of the sixth switching tube, the first input end of the first AC-AC conversion sub-circuit is connected with the other end of the first inductor, the second input end of the Nth AC-AC conversion sub-circuit is connected with the other end of the power supply, and the first input end of the ith AC-AC conversion sub-circuit is connected with the second input end of the ith-1 AC-AC conversion sub-circuit, wherein i is an integer greater than 1 and less than or equal to N.
In one embodiment of the present invention, the AC-AC conversion sub-circuit further includes: and one end of the fourth capacitor is connected with the first pole of the seventh switching tube, and the other end of the fourth capacitor is connected with the second pole of the eighth switching tube.
In one embodiment of the present invention, the AC-DC conversion circuit includes: one end of the fifth inductor is connected with one end of the fourth capacitor; a first pole of the ninth switching tube is connected with the other end of the fifth inductor, and a second pole of the ninth switching tube is connected with the other end of the fourth capacitor; a tenth switching tube, wherein a second pole of the tenth switching tube is connected with the other end of the fifth inductor; and one end of the fifth capacitor is connected with the first pole of the tenth switch tube, and the other end of the fifth capacitor is connected with the other end of the fourth capacitor.
An energy and power supply method of an energy and power supply device based on a secondary fusion on-column circuit breaker comprises the following steps: converting a power supply source into high-frequency alternating current through the AC-AC conversion circuit, wherein soft charging is performed through the power input circuit in the process of supplying power to the power supply source; the AC-DC conversion circuit converts the high-frequency alternating current into corresponding direct current, and the direct current is input into the circuit breaker on the secondary fusion column.
The invention has the beneficial effects that:
the energy taking and power supplying device of the secondary fusion on-column circuit breaker is high in energy taking efficiency, larger in output electric energy and capable of meeting energy taking requirements of edge calculation.
Drawings
Fig. 1 is a schematic structural diagram of an energy-taking and power-supplying device of a secondary fusion on-column circuit breaker according to an embodiment of the invention;
fig. 2 is a flowchart of an energy and power supply method of an energy and power supply device based on a secondary fusion on-pole circuit breaker according to an embodiment of the invention.
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.
Fig. 1 is a schematic structural diagram of an energy and power taking device of a secondary fused on-pole circuit breaker according to an embodiment of the present invention.
As shown in fig. 1, the energy and power supply device of the secondary fusion on-pole circuit breaker according to the embodiment of the invention may include: a power input circuit 100, an AC-AC conversion circuit 200, and an AC-DC conversion circuit 300.
Wherein, one end of the power input circuit 100 is connected with one end of the power supply Vg; one side of the AC-AC conversion circuit 200 is connected to the other end of the power input circuit 100 and the other end of the power supply Vg, respectively, wherein the AC-AC conversion circuit 200 is composed of N AC-AC conversion sub-circuits 210 connected in parallel, where N is an integer greater than 1 (only two are shown in the figure); one side of the AC-DC conversion circuit 300 is connected to the other side of the AC-AC conversion circuit 200, and the other side of the AC-DC conversion circuit 300 is connected to a secondary fused on-column circuit breaker.
Specifically, the power input circuit 100 may be a soft charging circuit, that is, the power supply Vg (alternating current) is firstly input into the power input circuit 100 to perform soft charging, then the alternating current is converted into high-frequency alternating current by the AC-AC conversion circuit 200, and finally the high-frequency alternating current is converted into corresponding direct current by the AC-DC conversion circuit 300, and the direct current is input into the secondary fused on-column circuit breaker, so as to achieve energy taking and power supply of the secondary fused on-column circuit breaker.
Specifically, in one embodiment of the present invention, as shown in fig. 1, the power input circuit 100 may include a first inductance L1, a second inductance L2, and a first resistance R1. One end of the first inductor L1 is connected with one end of the power supply Vg, and the other end of the first inductor L1 is connected with one side of the AC-AC conversion circuit 200; one end of the second inductor L2 is connected with one end of the first inductor L1; one end of the first resistor R1 is connected with the other end of the second inductor L2, and the other end of the first resistor R1 is connected with the other end of the first inductor L1. That is, the soft charging circuit may be configured by the first inductor L1, the second inductor L2, and the first resistor R1 to perform soft charging.
In one embodiment of the present invention, as shown in fig. 1, the AC-AC conversion sub-circuit 210 includes: the switching device comprises a first switching tube S1, a second switching tube S2, a third switching tube S3, a fourth switching tube S4, a first capacitor C1, a second capacitor C2, a third inductor L3, a fourth inductor L4, a transformer T1, a third capacitor C3, a fifth switching tube S5, a sixth switching tube S6, a seventh switching tube S7 and an eighth switching tube S8.
Wherein a first pole of the first switching tube S1 is used as a first input terminal of the AC-AC conversion sub-circuit 210; the second pole of the second switching tube S2 is connected with the second pole of the first switching tube S1; the first pole of the third switching tube S3 is connected with the first pole of the second switching tube S2; the second pole of the fourth switching tube S4 is connected with the second pole of the third switching tube S3, and the first pole of the fourth switching tube S4 is used as the second input end of the AC-AC conversion sub-circuit 210; one end of the first capacitor C1 is connected with a first pole of the first switching tube S1; one end of the second capacitor C2 is connected with the other end of the first capacitor C1, and the other end of the second capacitor C2 is connected with the first pole of the fourth switching tube S4; one end of the third inductor L3 is connected with a first pole of the second switching tube S2; one end of the fourth inductor L4 is connected with the other end of the third inductor L3, and the other end of the fourth inductor L4 is connected with one end of the second capacitor C2; one end of the primary side of the transformer T1 is connected with the other end of the third inductor L3, and the other end of the primary side of the transformer T1 is connected with the other end of the fourth inductor L4; one end of the third capacitor C3 is connected with one end of the secondary side of the transformer T1; the second pole of the fifth switching tube S5 is connected to the other end of the third capacitor C3, and the first pole of the fifth switching tube S5 is used as the first output end of the AC-AC conversion sub-circuit 210; the first pole of the sixth switching tube S6 is connected with the second pole of the fifth switching tube S5, and the second pole of the sixth switching tube S6 is used as the second output end of the AC-AC conversion sub-circuit; the first pole of the seventh switching tube S7 is connected with the first pole of the fifth switching tube, and the second pole of the seventh switching tube S7 is connected with the other end of the secondary side of the transformer T1; the first pole of the eighth switching tube S8 is connected to the second pole of the seventh switching tube S7, the second pole of the eighth switching tube S8 is connected to the second pole of the sixth switching tube S6, wherein the first input end of the first AC-AC conversion sub-circuit 210 is connected to the other end of the first inductor L1, the second input end of the nth AC-AC conversion sub-circuit 210 is connected to the other end of the power supply Vg, and the first input end of the ith AC-AC conversion sub-circuit 210 is connected to the second input end of the ith-1 AC-AC conversion sub-circuit 210, wherein i is an integer greater than 1 and less than or equal to N.
Wherein the AC-AC conversion sub-circuit 210 may further include: and one end of the fourth capacitor C4 is connected with the first pole of the seventh switching tube S7, and the other end of the fourth capacitor C4 is connected with the second pole of the eighth switching tube S7.
Specifically, in each AC-AC converting sub-circuit 210, the second pole (source) of the second switching tube S2 is connected to the second pole (source) of the first switching tube S1, and the second pole (source) of the fourth switching tube S4 is connected to the second pole (source) of the third switching tube S3. Modulating the first to fourth switching tubes S1 to S4 by adopting a high-frequency square wave control signal with the duty ratio of 50% at the primary side of the transformer T1, wherein the switching signals of the first switching tube S1 and the fourth switching tube S4 are kept the same, and the switching signals of the second switching tube S2 and the third switching tube S3 are kept the same; on the secondary side of the transformer T1, the switching signals of the fifth switching tube S5 and the eighth switching tube S8 and the first switching tube S1 and the fourth switching tube S4 remain the same, and the switching signals of the sixth switching tube S6 and the seventh switching tube S7 and the second switching tube S2 and the third switching tube S3 remain the same.
Specifically, each AC-AC conversion sub-circuit 210 may operate in first through fourth operating conditions. In the first working condition, the first switching tube S1 and the fourth switching tube S4 are turned on, the second switching tube S2 and the third switching tube S3 are turned off, the power supply Vg is a positive power supply, at this time, the leakage inductance of the transformer T1 (high-frequency transformer) and the first capacitor C1 form a resonant circuit, and the voltage input to the transformer T1 has the same amplitude and phase as the voltage of the power supply Vg; in the second working condition, the first switching tube S1 and the fourth switching tube S4 are turned off, the second switching tube S2 and the third switching tube S3 are turned on, the power supply Vg is a positive power supply, at this time, the leakage inductance of the transformer T1 (high-frequency transformer) and the second capacitor C2 form a resonant circuit, the voltage of the input transformer T1 has the same amplitude as the voltage of the power supply Vg, and the phase difference is 180 °; in the third working condition, the first switching tube S1 is conducted with the fourth switching tube S4, the second switching tube S2 is turned off with the third switching tube S3, the power supply Vg is a negative power supply, and at the moment, the amplitude of the voltage of the input transformer T1 is the same as the voltage of the power supply Vg, and the phase difference is 180 degrees; in the fourth working condition, the first switching tube S1 and the fourth switching tube S4 are turned off, the second switching tube S2 and the third switching tube S3 are turned on, the power supply Vg is a negative power supply, and at this time, the voltage input to the transformer T1 has the same amplitude and the same phase as the voltage of the power supply Vg. Therefore, a high-frequency voltage which is consistent with the switching frequency can be obtained at the two ends of the transformer T1, and the amplitude of the high-frequency voltage is the same as the voltage amplitude of the power supply Vg and changes in a sine rule.
For the secondary side of the transformer T1, in the first working condition and the fourth working condition, the fifth switching tube S5 and the eighth switching tube S8 are conducted, the sixth switching tube S6 and the seventh switching tube S7 are turned off, current flows through the third capacitor C3, then passes through the fifth switching tube S5 and the fourth capacitor C4 (energy storage capacitor) and finally passes through the eighth switching tube S8, so that a current loop is formed, wherein the conducting voltage of each switching tube is negligible relative to that of the other switching tube, and therefore, a high-frequency voltage consistent with the switching frequency can be obtained at two ends of the transformer T1 in the positive half period of the power supply Vg, and the voltage amplitude is related to the voltage amplitude of the power supply Vg and the transformer transformation ratio. In the second working condition and the third working condition, the fifth switching tube S5 and the eighth switching tube S8 are turned off, the sixth switching tube S6 and the seventh switching tube S7 are turned on, current flows through the sixth switching tube S6, then flows through the fourth capacitor C4, and finally flows through the seventh switching tube S7 and the third capacitor C3, so that a current loop is formed, wherein the conducting voltage of each switching tube is negligible relative to that of each switching tube, and therefore, a high-frequency voltage which is consistent with the switching frequency can be obtained at two ends of the transformer T1 in the negative half period of the power supply Vg, the voltage amplitude is related to the voltage amplitude of the power supply Vg and the transformer transformation ratio, and the current is the same as the positive half period.
In one embodiment of the present invention, as shown in fig. 1, the AC-DC conversion circuit 300 may include: a fifth inductance L5, a ninth switching tube S9, a tenth switching tube S10, and a fifth capacitance C5.
One end of the fifth inductor L5 is connected with one end of the fourth capacitor C4; a first pole of the ninth switching tube S9 is connected with the other end of the fifth inductor L5, and a second pole of the ninth switching tube S9 is connected with the other end of the fourth capacitor C4; the second pole of the tenth switching tube S10 is connected with the other end of the fifth inductor L5; one end of the fifth capacitor C5 is connected to the first pole of the tenth switching tube S10, and the other end of the fifth capacitor C5 is connected to the other end of the fourth capacitor C4.
Specifically, the switching signals of the ninth switching tube S9 and the tenth switching tube S10 are opposite, wherein when the ninth switching tube S9 is turned on and the tenth switching tube S10 is turned off, the fifth inductor L5 and the ninth switching tube S9 form a conducting loop, and at this time, the fifth capacitor C5 supplies power to the secondary fuse on-column circuit breaker; when the ninth switching tube S9 is turned off and the tenth switching tube S10 is turned on, the fifth inductor L5, the tenth switching tube S10 and the fifth capacitor C5 form a conductive loop, and the output voltage of the AC-AC conversion circuit 200 and the fifth inductor L5 supply power to the fifth capacitor C5 and the secondary fused on-column circuit breaker together.
In summary, according to the energy taking and power supplying device of the secondary fusion on-pole circuit breaker provided by the embodiment of the invention, the power supply is subjected to AC-AC conversion by the AC-AC conversion circuit formed by connecting N AC-AC conversion sub-circuits in parallel, and then the power supply is subjected to AC-DC conversion by the AC-DC conversion circuit, so that more high-voltage alternating currents can be obtained, and the energy taking efficiency is high.
The invention also provides an energy and power supply method based on the energy and power supply device of the secondary fusion on-column circuit breaker.
As shown in fig. 2, the energy and power supply method of the energy and power supply device based on a secondary fusion on-column circuit breaker according to the embodiment of the invention may include the following steps:
s1, converting a power supply into high-frequency alternating current through an AC-AC conversion circuit. In the process of supplying power by a power supply source, soft charging is performed through a power supply input circuit;
s2, converting the high-frequency alternating current into corresponding direct current through an AC-DC conversion circuit, and inputting the direct current into a secondary fusion on-column breaker.
It should be noted that, the specific circuit structures of the AC-AC conversion circuit, the power input circuit and the AC-DC conversion circuit may refer to the above embodiments, and are not described in detail herein to avoid redundancy.
According to the energy taking and power supplying method based on the secondary fusion on-pole circuit breaker, provided by the embodiment of the invention, the power supply is subjected to AC-AC conversion by the AC-AC conversion circuit formed by connecting N AC-AC conversion sub-circuits in parallel, and then the power supply is subjected to AC-DC conversion by the AC-DC conversion circuit, so that more high-voltage alternating currents can be obtained, and the energy taking efficiency is high.
In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like. While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (6)
1. An energy and power supply device of a secondary fusion on-column circuit breaker, which is characterized by comprising:
the power supply input circuit is connected with one end of the power supply;
the AC-AC conversion circuit is connected with the other end of the power input circuit and the other end of the power supply respectively, wherein the AC-AC conversion circuit is formed by connecting N AC-AC conversion sub-circuits in parallel, and N is an integer greater than 1;
and one side of the AC-DC conversion circuit is connected with the other side of the AC-AC conversion circuit, and the other side of the AC-DC conversion circuit is connected with the circuit breaker on the secondary fusion column.
2. The power take-off and supply device of a secondary fused on-pole circuit breaker of claim 1, wherein the power input circuit comprises:
one end of the first inductor is connected with one end of the power supply, and the other end of the first inductor is connected with one side of the AC-AC conversion circuit;
one end of the second inductor is connected with one end of the first inductor;
and one end of the first resistor is connected with the other end of the second inductor, and the other end of the first resistor is connected with the other end of the first inductor.
3. The power take-off and supply device of a secondary fused on-pole circuit breaker of claim 2, wherein the AC-AC conversion sub-circuit comprises:
a first switching tube, a first pole of which is used as a first input end of the AC-AC conversion sub-circuit;
the second pole of the second switching tube is connected with the second pole of the first switching tube;
the first pole of the third switching tube is connected with the first pole of the second switching tube;
the second pole of the fourth switching tube is connected with the second pole of the third switching tube, and the first pole of the fourth switching tube is used as the second input end of the AC-AC conversion sub-circuit;
one end of the first capacitor is connected with the first pole of the first switch tube;
one end of the second capacitor is connected with the other end of the first capacitor, and the other end of the second capacitor is connected with the first pole of the fourth switching tube;
one end of the third inductor is connected with the first pole of the second switching tube;
one end of the fourth inductor is connected with the other end of the third inductor, and the other end of the fourth inductor is connected with one end of the second capacitor;
one end of the primary side of the transformer is connected with the other end of the third inductor, and the other end of the primary side of the transformer is connected with the other end of the fourth inductor;
one end of the third capacitor is connected with one end of the secondary side of the transformer;
a second pole of the fifth switching tube is connected with the other end of the third capacitor, and a first pole of the fifth switching tube is used as a first output end of the AC-AC conversion sub-circuit;
a sixth switching tube, wherein a first pole of the sixth switching tube is connected with a second pole of the fifth switching tube, and the second pole of the sixth switching tube is used as a second output end of the AC-AC conversion sub-circuit;
a first pole of the seventh switching tube is connected with a first pole of the fifth switching tube, and a second pole of the seventh switching tube is connected with the other end of the secondary side of the transformer;
an eighth switching tube, a first pole of the eighth switching tube is connected with a second pole of the seventh switching tube, a second pole of the eighth switching tube is connected with a second pole of the sixth switching tube,
the first input end of the first AC-AC conversion sub-circuit is connected with the other end of the first inductor, the second input end of the Nth AC-AC conversion sub-circuit is connected with the other end of the power supply, and the first input end of the ith AC-AC conversion sub-circuit is connected with the second input end of the ith-1 AC-AC conversion sub-circuit, wherein i is an integer which is more than 1 and less than or equal to N.
4. The power take-off and supply device of a secondary fused on-pole circuit breaker of claim 3, wherein the AC-AC conversion sub-circuit further comprises:
and one end of the fourth capacitor is connected with the first pole of the seventh switching tube, and the other end of the fourth capacitor is connected with the second pole of the eighth switching tube.
5. The power take-off and supply device of a secondary fused on-pole circuit breaker of claim 4, wherein the AC-DC conversion circuit comprises:
one end of the fifth inductor is connected with one end of the fourth capacitor;
a first pole of the ninth switching tube is connected with the other end of the fifth inductor, and a second pole of the ninth switching tube is connected with the other end of the fourth capacitor;
a tenth switching tube, wherein a second pole of the tenth switching tube is connected with the other end of the fifth inductor;
and one end of the fifth capacitor is connected with the first pole of the tenth switch tube, and the other end of the fifth capacitor is connected with the other end of the fourth capacitor.
6. A power take-off and supply method based on the power take-off and supply device of the secondary fusion on-pole circuit breaker of any one of claims 1 to 5, characterized by comprising the following steps:
converting a power supply source into high-frequency alternating current through the AC-AC conversion circuit, wherein soft charging is performed through the power input circuit in the process of supplying power to the power supply source;
the AC-DC conversion circuit converts the high-frequency alternating current into corresponding direct current, and the direct current is input into the circuit breaker on the secondary fusion column.
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| CN202311181411.0A CN116914867B (en) | 2023-09-14 | 2023-09-14 | Energy and power supply device and method for secondary fusion on-pole circuit breaker |
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| CN202311181411.0A CN116914867B (en) | 2023-09-14 | 2023-09-14 | Energy and power supply device and method for secondary fusion on-pole circuit breaker |
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| EP3739721A1 (en) * | 2019-05-13 | 2020-11-18 | ALSTOM Transport Technologies | Device for supplying electrical energy, associated traction chain and electric vehicle |
| CN113922678A (en) * | 2020-09-24 | 2022-01-11 | 成都芯源系统有限公司 | High frequency AC/AC direct converter |
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| CN1151598A (en) * | 1995-07-18 | 1997-06-11 | Gec阿尔斯托姆运输公司 | Voltage lowering device and asynchronous traction system supplied from single-phase mains supply incorporating device of this kind |
| CN1176524A (en) * | 1996-09-03 | 1998-03-18 | Gec阿尔斯托姆运输公司 | Apparatus and method for supplying power to pulling system with DC voltage through transformer |
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| CN116914867B (en) | 2023-12-05 |
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