CN216056339U - Power distribution combined system based on limited power supply capacity - Google Patents
Power distribution combined system based on limited power supply capacity Download PDFInfo
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- CN216056339U CN216056339U CN202121325158.8U CN202121325158U CN216056339U CN 216056339 U CN216056339 U CN 216056339U CN 202121325158 U CN202121325158 U CN 202121325158U CN 216056339 U CN216056339 U CN 216056339U
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Abstract
The utility model discloses a power distribution combination system based on limited power supply capacity, which comprises: three one-level block terminal, respectively with three routes power electric connection, the leading-out terminal of three one-level block terminal is connected with two second grade block terminals respectively, the leading-out terminal and a plurality of electrical equipment of second grade block terminal are connected, the one-level block terminal includes first distribution return circuit and second distribution return circuit, be provided with electric interlock between first distribution return circuit and the second distribution return circuit, the end of first distribution return circuit and second distribution return circuit is connected with the second grade block terminal respectively, two liang of combinations of two arbitrary room regions's in the three room region second grade block terminal carries out the distribution by three one-level block terminal respectively. The system can realize the full load operation of any room load, when a certain room load is full, the loads of other rooms can be selected to operate, and the system can also realize the simultaneous light load operation of all the loads, and when all the loads are simultaneously in light load operation, the electrical system still has the selectivity and the reliability of protection.
Description
Technical Field
The utility model belongs to the technical field of power distribution system design, and particularly relates to a power distribution combined system based on limited power supply capacity.
Background
The existing distribution system architecture in China at present is usually that a tail-end distribution box distributes power to each electrical device, a power supply of the tail-end distribution box is led from a total power box, the distribution system design architecture is only suitable for civil or industrial projects and the like (considering the situation that all devices are fully loaded and operated at the same time) with the device power less than or equal to the power supply capacity, the distribution system design architecture is not suitable for application scenes with the load capacity far greater than the power supply capacity, the device power of the load is far greater than the power supply capacity, when all devices are fully loaded and operated at the same time, if a traditional distribution form is adopted, an overload protection trip will occur in an upper power box, the traditional distribution system architecture cannot meet the selectivity of protection at the moment, and the defect that an upper power supply trips exists. In particular, in the transformation project, the capacity of the power supply is often difficult to increase, and the use requirement cannot be solved comprehensively and reasonably, so that under the condition that the capacity of the power supply is limited, in order to meet the use requirement of the load full-load operation in any room area or the load non-full-load operation in all room areas, it is urgently needed to design a power distribution combination system which can be flexibly selected and has protection performance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a power distribution combination system based on limited power supply capacity, which aims to solve the problem that the full-load operation of loads in any room area cannot be realized under the condition of limited power supply capacity.
To achieve the above object, the present invention provides a power distribution combination system based on limited power supply capacity, comprising:
three one-level distribution box, the inlet wire end of three one-level distribution box respectively with three routes power electric connection, the outlet wire end of three one-level distribution box respectively with two second grade distribution box electric connection, the outlet wire end and a plurality of electrical equipment electric connection of second grade distribution box, wherein one-level distribution box includes first distribution circuit and second distribution circuit, be provided with electrical interlock between first distribution circuit and the second distribution circuit, the end of first distribution circuit and second distribution circuit is connected with two regional second grade distribution boxes in two rooms respectively, two liang of combinations of two arbitrary regional second grade distribution boxes in three room region are carried out the distribution by three one-level distribution box respectively, wherein the equipment capacity of the terminal electrical equipment of first distribution circuit and the terminal electrical equipment of second distribution circuit all is less than or equal to the power capacity of one-level distribution box, and the total equipment capacity of the terminal electrical equipment of first distribution circuit and the terminal electrical equipment of second distribution circuit is less than or equal to the power capacity of one-level distribution box, and the terminal electrical equipment of first distribution circuit and second distribution circuit all is less than Or equal to 2 times the power supply capacity of the first-stage distribution box.
According to one embodiment of the utility model, the power source capacity of the three primary distribution boxes is the same.
According to one embodiment of the present invention, the electrical equipment load capacity connected at the end of the first electrical distribution circuit is equal to the electrical equipment load capacity connected at the end of the second electrical distribution circuit.
According to an embodiment of the utility model, the power supply is electrically connected with the primary distribution box through a first cable, and a first circuit breaker is arranged on the first cable and is used for automatically cutting off the current of the first cable when a circuit fault occurs.
According to an embodiment of the utility model, the first-stage distribution box is electrically connected with the second-stage distribution box through a second cable, and a second circuit breaker is arranged on the second cable and is used for automatically cutting off the current of the second cable when a circuit fault occurs.
According to a specific embodiment of the present invention, the electrical interlock device comprises contactors respectively disposed on the first and second power distribution circuits, the two contactors being respectively connected to the two second circuit breakers.
Compared with the prior art, the power distribution combination system based on the limited power supply capacity provided by the utility model has the advantages that the loads in three room areas are combined into two groups, and the three power supplies are used for distributing power, so that the full-load operation of the load in any room area is realized, the loads in other rooms can be selected to operate when the load in a certain room area is full, the loads in all the room areas can be simultaneously operated in a non-full-load mode, and the electric system still has the protection selectivity and reliability when each load operates.
Drawings
Fig. 1 is a diagram of a power distribution assembly system based on limited power source capacity, provided in accordance with an embodiment of the present invention.
Reference numerals:
1-a first cable; 2-a first circuit breaker; 3-a second circuit breaker; 4-a contactor; 5-a second cable.
Detailed Description
The present invention is described in detail below with reference to specific embodiments in order to make the concept and idea of the present invention more clearly understood by those skilled in the art. It is to be understood that the embodiments presented herein are only a few of all embodiments that the present invention may have. Those skilled in the art who review this disclosure will readily appreciate that many modifications, variations, or alterations to the described embodiments, either in whole or in part, are possible and within the scope of the utility model as claimed.
As used herein, the terms "first," "second," and the like are not intended to imply any order, quantity, or importance, but rather are used to distinguish one element from another. As used herein, the terms "a," "an," and other similar terms are not intended to mean that there is only one of the things, but rather that the pertinent description is directed to only one of the things, which may have one or more. As used herein, the terms "comprises," "comprising," and other similar words are intended to refer to logical interrelationships, and are not to be construed as referring to spatial structural relationships. For example, "a includes B" is intended to mean that logically B belongs to a, and not that spatially B is located inside a. Furthermore, the terms "comprising," "including," and other similar words are to be construed as open-ended, rather than closed-ended. For example, "a includes B" is intended to mean that B belongs to a, but B does not necessarily constitute all of a, and a may also include C, D, E and other elements.
The terms "embodiment," "present embodiment," "an embodiment," "one embodiment," and "one embodiment" herein do not mean that the pertinent description applies to only one particular embodiment, but rather that the description may apply to yet another embodiment or embodiments. Those skilled in the art will appreciate that any descriptions made in relation to one embodiment may be substituted, combined, or otherwise combined with the descriptions in relation to another embodiment or embodiments, and that the substitution, combination, or otherwise combination of the new embodiments as produced herein may occur to those skilled in the art and are intended to be within the scope of the present invention.
Example 1
Additional aspects and advantages of embodiments of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the utility model.
The embodiment of the utility model provides a power distribution combination system based on limited power supply capacity, which comprises: three one-level block terminal, the inlet wire end of three one-level block terminal respectively with three routes power electric connection, the outlet terminal of three one-level block terminal respectively with two second grade block terminal electric connection, the outlet terminal and a plurality of electrical equipment electric connection of second grade block terminal, wherein one-level block terminal includes first distribution circuit and second distribution circuit, be provided with electrical interlocking device between first distribution circuit and the second distribution circuit, the end of first distribution circuit and second distribution circuit is connected with two regional second grade block terminals in room respectively, two liang of combinations of arbitrary two regional second grade block terminals in room in the three room region are carried out the distribution by three one-level block terminal respectively.
By arranging the electrical interlock between the first distribution loop and the second distribution loop, the full-load operation of the load in any room area and the selective operation of the load in other room areas can be realized, the simultaneous non-full-load operation of all the loads can be realized, and the electrical system still has the selectivity and the reliability of protection when each load operates.
Specifically, the equipment capacity of the electrical equipment at the end of the first power distribution loop and the equipment capacity of the electrical equipment at the end of the second power distribution loop are both less than or equal to the power supply capacity of the primary distribution box, and the total equipment capacity of the electrical equipment at the end of the first power distribution loop and the electrical equipment at the end of the second power distribution loop is less than or equal to 2 times the power supply capacity of the primary distribution box. Thereby meeting the design requirement of the power distribution system with the maximum load capacity 2 times of the power supply capacity. And further, any electrical equipment can be independently and fully loaded to operate, and overload protection tripping of an upper power box of the electrical equipment is avoided.
Specifically, the power passes through first cable 1 and one-level block terminal electric connection, is provided with first circuit breaker 2 on the first cable 1, and first circuit breaker 2 is used for the electric current of automatic cutout first cable 1 when circuit fault. One-level block terminal passes through second cable 5 and second grade block terminal electronic box electric connection, is provided with second circuit breaker 3 on the second cable 5, and automatic cutout second cable 5's electric current when second circuit breaker 3 is used for circuit fault. By arranging the first circuit breaker 2 on the first cable 1 and the second circuit breaker 3 on the second cable 5, when any line fails, the failed line can automatically cut off current, so that the safety and reliability of the electrical equipment connected with the end of the line can be ensured.
Specifically, electric interlock is including setting up contactor 4 on first distribution circuit and second distribution circuit respectively, and two contactors 4 are connected with two second circuit breakers 3 respectively, and two contactors 4 carry out electrical interconnection, form electric interlock distribution circuit. Because the two contactors 4 can not act simultaneously, when one of the two-stage distribution boxes operates, the contactor 4 on the loop interlocked with the two-stage distribution box is in an opening state, so that the load connected into the whole electric system is ensured to be within the power supply capacity range. Therefore, when the load in a certain room area runs fully, the electrical equipment in other room areas stops running, and the overload protection tripping of the upper power supply box is avoided.
Example 2
The operation of the present invention will be described in detail with reference to a specific embodiment. It should be noted that this embodiment is described as a specific embodiment, and the specific implementation is not limited to this.
With reference to fig. 1, an embodiment of the present invention provides a power distribution combination system based on limited power capacity, as shown in fig. 1, the power distribution combination system distributes power from three power sources with the same capacity to three rooms with the same load, where each room requires two incoming power sources with power capacity. The three-way power supply is respectively connected with three first-stage distribution boxes through a first cable 1, each first-stage distribution box is divided into two distribution loops, each distribution loop is respectively and electrically connected with a second-stage distribution box through a second cable 5, the outlet end of each second-stage distribution box is electrically connected with electrical equipment, a first breaker 2 is arranged on the first cable 1, a second breaker 3 and a contactor 4 are arranged on the second cable 5, the contactors 4 on the two distribution loops are electrically interlocked to form an electrically interlocked distribution loop, three rooms can be named as ABC, two second-stage distribution boxes of 1APU1 and 1APU2 are arranged in a room A, two second-stage distribution boxes of 2 1 and 2APU2 are arranged in a room B, 3APU1 and 3APU2 are arranged in a room C, one distribution box of the two second-stage distribution boxes of the three optional rooms is combined in pairs and then is distributed by the upper-stage distribution box, for example, in the embodiment of the utility model, the two-stage distribution box 1APU1 in the room A is combined with the two-stage distribution box 2APU1 in the room B, the two-stage distribution box 2APU2 in the room B is combined with the two-stage distribution box 3APU1 in the room C, the two-stage distribution box 1APU2 in the room A is combined with the two-stage distribution box 3APU2 in the room C, and the combined load is distributed by the upper-stage power supply thereof, wherein the three first-stage distribution boxes connected with the three power supplies have the same equipment power, the total power capacity is 100KW, the required coefficient is 1, the power factor is 0.85, the calculated load is 100KW, and the calculated current is 178.75A. One-level block terminal includes two distribution circuit, be first distribution circuit and second distribution circuit respectively, every distribution circuit is respectively through second cable 5 and two second distribution box electric connection that equipment power is the same, the end-to-end connection of each second distribution box has electrical equipment, each electrical equipment's load capacity is 100KW, because every power capacity can only satisfy the AB, BC, the three group room of AC a set of capacity demand wherein, consequently AB, BC, the distribution circuit of the regional load in the three group rooms of AC carries out electric linkage between two liang, in order to guarantee under the arbitrary condition that the load of taking of power is not overloaded. The power distribution combination system can ensure that when any room is fully loaded, the power distribution of other two rooms has selectivity. For example, when the load of the room A runs fully, two secondary distribution boxes 1APU1 and 1APU2 of the room A simultaneously distribute power, because the secondary distribution box 1APU1 is connected with the first primary distribution box, and the secondary distribution box 1APU2 is connected with the third primary distribution box, the secondary distribution box 2APU2 and 3APU1 connected with the second primary distribution box can be alternatively used for distributing power, namely, the room B or the room C has selectivity, when the load of the room B runs fully, the room A or the room C has selectivity, and when the load of the room C runs fully, the room A or the room B has selectivity.
In summary, the power distribution combination system based on the limited power supply capacity provided by the utility model distributes power by three power supplies through the combination of two loads and two groups of loads in three room areas, so that the full-load operation of the load in any room area is realized, the loads in other rooms can be selected to operate when the load in a certain room area is full, the loads in all room areas can be simultaneously operated under non-full load, and the electric system still has the protection selectivity and reliability when each load operates.
The concepts, principles and concepts of the utility model have been described above in detail in connection with specific embodiments (including examples and illustrations). It will be appreciated by persons skilled in the art that embodiments of the utility model are not limited to the specific forms disclosed above, and that many modifications, alterations and equivalents of the steps, methods, apparatus and components described in the above embodiments may be made by those skilled in the art after reading this specification, and that such modifications, alterations and equivalents are to be considered as falling within the scope of the utility model. The scope of the utility model is only limited by the claims.
Claims (6)
1. A power distribution assembly system based on limited power source capacity, comprising: the power distribution system comprises three first-stage distribution boxes, wherein the wire inlet ends of the three first-stage distribution boxes are respectively electrically connected with three power supplies, the wire outlet ends of the three first-stage distribution boxes are respectively electrically connected with two second-stage distribution boxes, the wire outlet ends of the second-stage distribution boxes are electrically connected with a plurality of electrical devices, the first-stage distribution boxes comprise a first distribution loop and a second distribution loop, an electrical interlocking device is arranged between the first distribution loop and the second distribution loop, the tail ends of the first distribution loop and the second distribution loop are respectively connected with the second-stage distribution boxes of two room areas, the two-two combinations of the second distribution boxes of any two room areas in the three room areas are respectively distributed by the three first-stage distribution boxes, and the equipment capacities of the electrical devices at the tail ends of the first distribution loop and the second distribution loop are respectively smaller than or equal to the power supply capacity of the first-stage distribution boxes, and the total equipment capacity of the electrical equipment at the end of the first power distribution loop and the electrical equipment at the end of the second power distribution loop is less than or equal to 2 times the power source capacity of the primary distribution box.
2. The limited power capacity-based power distribution assembly of claim 1, wherein the power capacities of the three primary distribution boxes are the same.
3. The limited power source capacity based power distribution combination of claim 1, wherein the electrical equipment load capacity connected at the end of the first power distribution loop is equal to the electrical equipment load capacity connected at the end of the second power distribution loop.
4. The limited power source capacity-based power distribution assembly of claim 1, wherein the power source is electrically connected to the primary distribution box via a first cable, and wherein a first circuit breaker is disposed on the first cable, the first circuit breaker being configured to automatically break a current of the first cable when a circuit fault occurs.
5. The limited power source capacity-based power distribution assembly system of claim 1, wherein the primary distribution box is electrically connected to the secondary distribution box via a second cable, and a second circuit breaker is disposed on the second cable for automatically breaking current of the second cable when a circuit fault occurs.
6. The limited power source capacity-based power distribution combination system of claim 5, wherein the electrical interlock comprises contactors disposed on the first and second power distribution circuits, respectively, the two contactors being connected to the two second circuit breakers, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121325158.8U CN216056339U (en) | 2021-06-15 | 2021-06-15 | Power distribution combined system based on limited power supply capacity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121325158.8U CN216056339U (en) | 2021-06-15 | 2021-06-15 | Power distribution combined system based on limited power supply capacity |
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| Publication Number | Publication Date |
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| CN216056339U true CN216056339U (en) | 2022-03-15 |
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| CN202121325158.8U Active CN216056339U (en) | 2021-06-15 | 2021-06-15 | Power distribution combined system based on limited power supply capacity |
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- 2021-06-15 CN CN202121325158.8U patent/CN216056339U/en active Active
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