CN112350554A - Multi-path power supply collinear method and device - Google Patents
Multi-path power supply collinear method and device Download PDFInfo
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- CN112350554A CN112350554A CN202011229954.1A CN202011229954A CN112350554A CN 112350554 A CN112350554 A CN 112350554A CN 202011229954 A CN202011229954 A CN 202011229954A CN 112350554 A CN112350554 A CN 112350554A
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- power supply
- collinear
- cable
- alternating current
- cables
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/10—Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
Abstract
A collinear method and a collinear device for multiple power supplies are characterized in that collinear cables are arranged between a power control cabinet and a socket box, the number of the collinear cables meets the requirement of one power supply with the largest number of cables in the multiple power supplies, the rest power supplies are respectively connected into the collinear cables, and each power supply is respectively connected with the collinear cables through a switching device KMn. According to the multi-path power supply collinear method provided by the invention, in the application scene of the multi-path power supply, only the power supply cable with the most single-path lines needs to be arranged, the rest power supplies share the power supply cable, each path of power supply is connected with the power supply cable through the corresponding switching device, and the corresponding power supply can be switched for use as required, so that the cable arrangement resources are greatly saved, and the switching devices can realize the interlocking control of each path of power supply, and the safety is ensured.
Description
Technical Field
The invention relates to the field of locomotive electrical equipment, in particular to a collinear method and a collinear device for multiple power supplies.
Background
In a commissioning power supply of a locomotive or a passenger car, it is generally necessary to switch different power supply sources according to different application situations. Typically, the DC600V and the AC380V power supplies are not used simultaneously and need to be switched as required, and currently, in the prior art, two power cables (DC + and DC-) are arranged from the DC600V power cabinet to a far-end socket box, 4 power cables (3P + N) are arranged from the AC380V power supply to a power utilization terminal, and the on-off of the corresponding power supply loop circuit is controlled by controlling a contactor at the near-end power cabinet (see fig. 1). Therefore, when the device is used, only one set of the DC + and DC-and 3P + N cables is in use. Especially for high-power and long-distance power transmission equipment such as DC600V/AC380V, the design method has great resource waste.
Therefore, the method and the device for the multiple power supply collinear connection have great significance in the technical field.
Disclosure of Invention
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a multi-path power supply collinear method is characterized in that: collinear cables are arranged between the power control cabinet and the socket box, the number of the collinear cables meets the requirement of one power supply with the largest number of cables in multiple paths of power supplies, the rest power supplies are respectively connected into the collinear cables, and each path of power supply is respectively connected with the collinear cables through a switching device KMn.
Furthermore, the number of the collinear cables meets the requirement of alternating current power supplies in the multi-path power supply, and the rest direct current power supplies are connected with the collinear cables through a switching device KMn respectively.
Furthermore, the alternating current power supply is directly connected with the common line cable through a switching device KMn, and a positive line and/or a negative line of the direct current power supply are connected in parallel and then connected with the common line cable through the switching device KMn.
Furthermore, the alternating current power supply is directly connected with the collinear cable through a switching device KMn, and a positive line and a negative line of the direct current power supply are respectively connected with two lines of the collinear cable through the switching device KMn.
Further, in the power control cabinet, a signal line A, B, C, N of an alternating current power supply is connected with a common line cable through an alternating current contactor KM1 contact respectively, the other end of the common line cable is connected with a socket box, a direct current power supply signal line DC + is connected with the signal line A, B in parallel through an alternating current contactor KM2 contact and then is connected with the common line cable, and a direct current power supply signal line DC-is connected with the signal line C, N in parallel through an alternating current contactor KM2 contact and then is connected with the common line cable.
Furthermore, in the power control cabinet, a signal wire A, B, C, N of an alternating current power supply is connected with a common line cable through an alternating current contactor KM1 contact respectively, the other end of the common line cable is connected with a socket box, a direct current power supply signal wire DC + is connected with the signal wire A through an alternating current contactor KM2 contact and then is connected with the common line cable, and a direct current power supply signal wire DC-is connected with the signal wire N through an alternating current contactor KM2 contact and then is connected with the common line cable.
A multi-path power supply collinear device comprises a power supply control cabinet and a socket box, wherein collinear cables are connected between the power supply control cabinet and the socket box; each power supply is connected with the common cable through a switching device KMn.
Further, a signal wire A, B, C, N of an alternating current power supply is connected with a common line cable through an alternating current contactor KM1 contact respectively, the other end of the common line cable is connected with an AC socket in the socket box, a direct current power supply signal wire DC + is connected with the signal wire A, B in parallel through an alternating current contactor KM2 contact and then is connected with the common line cable, a direct current power supply signal wire DC-is connected with the common line cable after being connected with the signal wire C, N in parallel through an alternating current contactor KM2 contact, and the other end of the common line cable is connected with a DC socket in the socket box.
The invention has the following advantages:
1. according to the multi-path power supply collinear method provided by the invention, in the application scene of the multi-path power supply, only the power supply cable with the most single-path lines needs to be arranged, the rest power supplies share the power supply cable, each path of power supply is connected with the power supply cable through the corresponding switching device, and the corresponding power supply can be switched for use as required, so that the cable arrangement resources are greatly saved, and the switching devices can realize the interlocking control of each path of power supply, and the safety is ensured.
Drawings
FIG. 1 is a schematic diagram of a power cable arrangement in the background art;
FIG. 2 is a schematic diagram of a multi-power collinear arrangement;
FIG. 3 is a schematic diagram of an embodiment;
fig. 4 is a schematic diagram of the second embodiment.
Detailed Description
In order that those skilled in the art will be able to fully practice the present invention, it will be further described with reference to the accompanying drawings and specific examples.
When a power supply cable shared by multiple power supply sources is required, as shown in fig. 2, the following method can be adopted: collinear cables 3 are arranged between the power control cabinet 1 and the socket box 2, so that the number of the collinear cables 3 meets the requirement of one path of power supply S1 with the largest number of cables in multiple paths of power supplies, the rest power supplies are respectively connected into the collinear cables 3, and each path of power supply Sn is respectively connected with the collinear cables 3 through a switching device KMn. The arrangement quantity of the collinear cables 3 is upward compatible to meet the requirement of the power supply source with the largest number of cables, the rest power supply sources are connected with the collinear cables 3 through the corresponding switching devices KMn, when a certain path of power supply source needs to be used, the contact closing of the corresponding switching devices KMn is controlled to be connected with the collinear cables 3, and the rest switching devices are disconnected.
In order to further increase the safety of the co-linear power supplies, it is necessary to ensure that only one power supply is connected to the co-linear cable 3. Thus, interlocks can be provided between the switching devices KMn, which interlocks are usually mechanical and electrical. Taking the electrical interlocking device as an example, when the switching device KMn is a contactor, the normally closed contact of the switching device KMn-1 can be connected with the control coil of the switching device KMn, and the normally closed contact of the switching device KMn can be connected with the control coil of the switching device KMn-1, when the normally open contact of the switching device KMn is closed to control the power supply to be connected into the collinear cable 3, the normally closed contact of the switching device KMn is disconnected to cut off the electrical connection of the control coil of the switching device KMn-1, so that the switching device KMn-1 can not control the power supply to be connected into the collinear cable 3 at the moment. Furthermore, it is also possible to switch in the control circuit of the switching device KMn an emergency button which can be pressed to disconnect all the switching devices KMn in the event of an emergency.
Because collinear cable 3 will insert to in the socket box 2, need insert different power supply through different sockets with the electric side, for convenient operation in socket box 2, the power supply socket of every way all connects the pilot lamp, shows that this way power supply is in the power supply state when the pilot lamp is lighted.
A typical implementation would be to have the signal line DC + of DC600V and the signal line DC-connected in parallel with the AC380V power signal line into the co-linear cable 3 when the DC600V and AC380V power supplies need to share the co-linear cable 3.
As shown in fig. 3, in the power control cabinet 1, a signal line A, B, C, N of an ac power supply is connected to a collinear cable 3 through an ac contactor KM1 contact, the other end of the collinear cable 3 is connected to a receptacle box 2, a DC power supply signal line DC + is connected to the collinear cable 3 after being connected in parallel to a signal line A, B through an ac contactor KM2 contact, and a DC power supply signal line DC-is connected to the collinear cable 3 after being connected in parallel to a signal line C, N through an ac contactor KM2 contact.
Another exemplary embodiment is when the DC600V and AC380V power supplies need to share the collinear cable 3, the signal line DC + and signal line DC-of the DC600V and the AC380V power signal line collinear cable 3, but only two signal lines are taken as a shared cable of the signal line DC + and signal line DC-of the DC 600V.
As shown in fig. 4, the signal line A, B, C, N of the ac power supply is connected to the collinear cable 3 through the ac contactor KM1, the other end of the collinear cable 3 is connected to the outlet box 2, the DC power supply signal line DC + is connected to the signal line a through the ac contactor KM2 and then to the collinear cable 3, and the DC power supply signal line DC-is connected to the signal line N through the ac contactor KM2 and then to the collinear cable 3. In this embodiment, the AC380V power supply uses only two signal lines as the DC600V power supply common line, and the other two signal lines that are actually connected in the air can be used as the other DC power supply signal lines.
In the above embodiment, the outlet box 2 is provided with corresponding outlets, such as a DC600V outlet and an AC380V outlet, for use by the lower-stage circuit, according to the actual number of power supply lines.
Obviously, the above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A multi-path power supply collinear method is characterized in that: arranging collinear cables (3) between a power control cabinet (1) and a socket box (2), enabling the number of the collinear cables (3) to meet the requirement of one path of power supply with the largest number of cables in multiple paths of power supplies, enabling the rest power supplies to be respectively connected into the collinear cables (3), and enabling each path of power supply to be respectively connected with the collinear cables (3) through a switching device KMn.
2. The multi-power supply co-linear method of claim 1, wherein: the number of the collinear cables (3) meets the requirement of alternating current power supplies in a multi-path power supply, and other direct current power supplies are respectively connected with the collinear cables (3) through a switching device KMn.
3. The multi-power supply co-linear method of claim 2, wherein: the alternating current power supply is directly connected with the collinear cable (3) through a switching device KMn, and a positive line and/or a negative line of the direct current power supply are connected in parallel and then connected with the collinear cable (3) through the switching device KMn.
4. The multi-power supply co-linear method of claim 2, wherein: the alternating current power supply is directly connected with the collinear cable (3) through a switching device KMn, and a positive line and a negative line of the direct current power supply are respectively connected with two lines of the collinear cable (3) through the switching device KMn.
5. A multi-power supply co-linear method as claimed in claim 3, wherein: in the power control cabinet (1), a signal wire A, B, C, N of an alternating current power supply is connected with a collinear cable (3) through an alternating current contactor KM1 contact respectively, the other end of the collinear cable (3) is connected with a socket box (2), a direct current power supply signal wire DC + is connected with a signal wire A, B in parallel through an alternating current contactor KM2 contact and then is connected with the collinear cable (3), and a direct current power supply signal wire DC-is connected with a signal wire C, N in parallel through an alternating current contactor KM2 contact and then is connected with the collinear cable (3).
6. The multi-power supply co-linear method of claim 4, wherein: in the power control cabinet (1), a signal wire A, B, C, N of an alternating current power supply is connected with a collinear cable (3) through an alternating current contactor KM1 contact respectively, the other end of the collinear cable (3) is connected with a socket box (2), a direct current power supply signal wire DC + is connected with a signal wire A through an alternating current contactor KM2 contact and then is connected with the collinear cable (3), and a direct current power supply signal wire DC-is connected with a signal wire N through an alternating current contactor KM2 contact and then is connected with the collinear cable (3).
7. A kind of multi-channel power supply collinear device, characterized by that: the power supply control cabinet comprises a power supply control cabinet (1) and a socket box (2), wherein a collinear cable (3) is connected between the power supply control cabinet (1) and the socket box (2); each power supply is connected with the collinear cable (3) through a switching device KMn.
8. The multiple power supply co-linear device of claim 7, wherein: a signal wire A, B, C, N of an alternating current power supply is connected with a collinear cable (3) through an alternating current contactor KM1 contact respectively, the other end of the collinear cable (3) is connected with an AC socket (21) in a socket box (2), a direct current power supply signal wire DC + is connected with the signal wire A, B in parallel through an alternating current contactor KM2 contact and then is connected with the collinear cable (3), a direct current power supply signal wire DC-is connected with the collinear cable (3) after being connected with the signal wire C, N in parallel through an alternating current contactor KM2 contact, and the other end of the collinear cable (3) is connected with a DC socket (22) in the socket box (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011229954.1A CN112350554A (en) | 2020-11-06 | 2020-11-06 | Multi-path power supply collinear method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011229954.1A CN112350554A (en) | 2020-11-06 | 2020-11-06 | Multi-path power supply collinear method and device |
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| CN112350554A true CN112350554A (en) | 2021-02-09 |
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| CN202011229954.1A Pending CN112350554A (en) | 2020-11-06 | 2020-11-06 | Multi-path power supply collinear method and device |
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| CN203301227U (en) * | 2013-06-19 | 2013-11-20 | 国家电网公司 | Uninterrupted power supply (UPS) automatic switching device |
| CN105958633A (en) * | 2016-06-22 | 2016-09-21 | 中航太克（厦门）电力技术股份有限公司 | Two-way power supply automatic switching power supply circuit |
| CN207801476U (en) * | 2017-12-29 | 2018-08-31 | 天津市上上生科技发展有限公司 | A kind of CPCI power supply backplanes with alternating current-direct current automatic switching function |
| CN208257496U (en) * | 2018-05-08 | 2018-12-18 | 内蒙古电力勘测设计院有限责任公司 | Dual-power automatic switching formula heating tape current supply circuit |
| CN110797971A (en) * | 2019-11-29 | 2020-02-14 | 江苏未来城市公共空间开发运营有限公司 | Normal fire power supply system |
-
2020
- 2020-11-06 CN CN202011229954.1A patent/CN112350554A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203301227U (en) * | 2013-06-19 | 2013-11-20 | 国家电网公司 | Uninterrupted power supply (UPS) automatic switching device |
| CN105958633A (en) * | 2016-06-22 | 2016-09-21 | 中航太克（厦门）电力技术股份有限公司 | Two-way power supply automatic switching power supply circuit |
| CN207801476U (en) * | 2017-12-29 | 2018-08-31 | 天津市上上生科技发展有限公司 | A kind of CPCI power supply backplanes with alternating current-direct current automatic switching function |
| CN208257496U (en) * | 2018-05-08 | 2018-12-18 | 内蒙古电力勘测设计院有限责任公司 | Dual-power automatic switching formula heating tape current supply circuit |
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Application publication date: 20210209 |