CN210806740U - Three-way low-voltage power supply device and power supply system - Google Patents
Three-way low-voltage power supply device and power supply system Download PDFInfo
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- CN210806740U CN210806740U CN201921066706.2U CN201921066706U CN210806740U CN 210806740 U CN210806740 U CN 210806740U CN 201921066706 U CN201921066706 U CN 201921066706U CN 210806740 U CN210806740 U CN 210806740U
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Abstract
The utility model is suitable for a low pressure power supply technical field provides a three routes low pressure power supply unit and power supply system, the commercial power passes through the one end that each power output line section was connected to the commercial power transmission line section, the generator passes through the one end that each power output line section was connected to the generator output line highway section, emergency power passes through the one end that each power output line section was connected to the emergency power transmission line section, the power leading-out terminal that corresponds is connected to the other end of each power output line section. The utility model discloses embodiment provides a three routes low pressure power supply unit and power supply system are provided with three routes power inlet wire, are respectively: commercial power supply, generator power and emergency power supply, start emergency power supply when commercial power and generator break down simultaneously and can not supply power, provide the electric energy by emergency power supply, satisfy the continuation power supply demand of power consumption load, realize providing stable and continuous power, promote the power supply reliability, ensure important load equipment reliable operation.
Description
Technical Field
The application belongs to the technical field of low-voltage power supply, and particularly relates to a three-way low-voltage power supply device and a power supply system.
Background
At present, the role of power supply and distribution infrastructure in modern construction is gradually highlighted, and meanwhile, higher requirements on power supply continuity, safety, reliability and stability are provided. The requirements of departments such as large-scale data centers, banks, financial centers, industrial and mining enterprises, hospitals, schools, scientific research institutions and the like on the continuity of power supply are higher and higher, so that the emergency power supply equipment market is developed vigorously and is widely applied to various fields of various industries and even residents. However, the traditional load low-voltage distribution equipment mostly adopts two paths of power supplies, namely a mains supply and a generator power supply, and when one path of power supply fails, the other path of power supply is put into use, so that continuous power supply is ensured. The existing power supply device has the following problems: if the two power supplies of the city and the generator are failed at the same time, a power failure accident can be caused, the connected important loads can stop running, great economic loss can be caused, even personal injury can be caused, and the severity of the result cannot be estimated.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application provides a three-way low-voltage power supply device and a power supply system, so as to solve the problem in the prior art that when the utility power and the generator are out of order simultaneously, the conventional power supply device cannot supply power normally, resulting in low power supply reliability.
A first aspect of an embodiment of the present application provides a three-way low-voltage power supply device, including:
the mains supply access end is used for connecting a mains supply;
the generator access end is used for connecting a generator;
the emergency power supply access end is used for connecting an emergency power supply;
at least one power outlet terminal;
a commercial power transmission line section;
a generator output line section;
an emergency power transmission line section; and
at least one power output line section corresponding to each power outlet end;
the utility power incoming end passes through the one end of each power output line section is connected to the commercial power transmission line section, the generator incoming end passes through the one end of each power output line section is connected to the generator output line highway section, the emergency power source incoming end passes through the one end of each power output line section is connected to the emergency power transmission line section, and the power leading-out terminal that corresponds is connected to the other end of each power output line section.
Furthermore, the emergency power supply access end is an emergency power supply socket matched with an emergency power supply output plug of the emergency power supply.
Further, three routes low pressure power supply unit still includes emergency power source and inserts the cabinet, emergency power source inserts the cabinet and includes the cabinet body, be provided with the cabinet door on the cabinet body, emergency power source socket is fixed to be set up the cabinet is internal.
Furthermore, the commercial power transmission line section, the generator output line section and each power output line section are provided with circuit breakers.
Furthermore, the three-way low-voltage power supply device further comprises a reactive dynamic compensator, and the reactive dynamic compensator is connected with the commercial power transmission line section.
Furthermore, the three-way low-voltage power supply device also comprises a surge protector, and the surge protector is connected with the commercial power transmission line section.
A second aspect of an embodiment of the present application provides a three-way low-voltage power supply system, including:
a generator;
an emergency power supply; and
the three-way low-voltage power supply device provided by the first aspect of the embodiment of the present application is described above.
Compared with the prior art, the utility model beneficial effect who exists is: the utility model discloses embodiment provides a three routes low pressure power supply unit and power supply system are provided with three routes power inlet wire, are respectively: commercial power supply, generator power and emergency power supply, start emergency power supply when commercial power and generator break down simultaneously and can not supply power, provide the electric energy by emergency power supply, satisfy the continuation power supply demand of power consumption load, realize providing stable and continuous power, promote the power supply reliability, ensure important load equipment reliable operation.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic circuit diagram of a three-way low-voltage power supply device according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an emergency power outlet in a three-way low-voltage power supply device according to an embodiment of the present disclosure;
fig. 3 is a schematic circuit structure diagram of a three-way low-voltage power supply system according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
In order to explain the technical means described in the present application, the following description will be given by way of specific embodiments.
Fig. 1 is a schematic circuit structure diagram of a three-way low-voltage power supply device according to a first embodiment of the present disclosure. As shown in fig. 1, the three-way low voltage power supply device includes: the power supply system comprises a mains supply incoming end 11, a generator incoming end 12, an emergency power supply incoming end 13 and at least one power outlet end 14. The commercial power input terminal 11 is used for connecting with an external commercial power (usually, the commercial power is 220V alternating current) to input the commercial power; the generator input end 12 is used for connecting with a generator to input electric energy generated by the generator; the emergency power supply access end 13 is used for connecting with an emergency power supply to input electric energy output by the emergency power supply; the power outlet 14 is the power output of the three-way low-voltage power supply device, and the specific number thereof is determined by the actual power supply requirement.
The three-way low-voltage power supply device also comprises related line sections, namely a commercial power transmission line section, a generator output line section, an emergency power transmission line section and at least one power output line section corresponding to each power outlet end 14. The utility power input end 11 is connected to one end of each power output line section through a utility power transmission line section, the generator input end 12 is connected to one end of each power output line section through a generator output line section, the emergency power input end 13 is connected to one end of each power output line section through an emergency power transmission line section, and the other end of each power output line section is connected to a corresponding power outlet 14.
In one embodiment, as shown in fig. 2, the emergency power inlet 13 is an emergency power outlet (hereinafter referred to as an emergency power outlet 13), and the emergency power outlet 13 is adapted to an emergency power output plug of an emergency power source, which can be properly inserted into the emergency power outlet 13. The form that adopts the socket can conveniently be connected and break off with emergency power supply, can reliably guarantee moreover that electric energy transmits, of course, as other implementation modes, can also adopt other types of electric connector, for example aviation plug for be connected with emergency power supply.
In one embodiment, the three-way low-voltage power supply device further includes an emergency power supply access cabinet, the emergency power supply access cabinet includes a cabinet body, a cabinet door is disposed on the cabinet body, and the emergency power supply socket 13 is fixedly disposed in the cabinet body. The emergency power supply access cabinet can prevent the emergency power supply socket 13 from being exposed outside, not only can reduce the degree of the emergency power supply socket 13 influenced by external environment (such as rain and snow) and prolong the service life of the emergency power supply socket 13, but also can prevent related personnel from electric shock accidents and improve the power supply safety. Moreover, the cabinet door can be marked, such as: the emergency power supply access unit is noted. Of course, whether the emergency power supply access cabinet is arranged or not is influenced by factors such as the capacity of the emergency power supply, the field environment and the installation position. In addition, the emergency power socket 13 can be installed on a copper bar (the copper bar needs to satisfy the current-carrying capacity of the emergency power supply) and connected with the transmission line section of the emergency power supply through the copper bar.
In one embodiment, the utility transmission line section and the emergency power transmission line section may each be formed by conventional transmission lines and bus sections, as shown in fig. 1, and a transformer may be further provided in the conventional transmission line portion of the utility transmission line section, and may convert the input ac power into ac power of a desired voltage level. And, can also set up the circuit breaker in the corresponding position in commercial power transmission line section, generator output line section and each power output line section, the input and the excision of the relevant power of being convenient for. Of course, a circuit breaker may also be provided on the emergency power transmission line section. As another implementation, switching of the power supply can be realized without providing a breaker, for example: and directly controlling whether the generator or the emergency power supply operates to control whether the generator or the emergency power supply is put into operation.
No matter what the specific structure of the emergency power supply access end 13 is, the three-way low-voltage power supply device further comprises a reactive dynamic compensator 15, and the reactive dynamic compensator 15 is connected with a commercial power transmission line section, so that reactive dynamic compensation is conveniently realized, and the electric energy quality is ensured. The reactive dynamic compensator 15 is a conventional device and will not be described in detail here. In one embodiment, a fuse may be further disposed on the connection line between the reactive dynamic compensator 15 and the commercial power transmission line section, so as to protect the reactive dynamic compensator 15 to a certain extent.
Regardless of the specific structure of the emergency power inlet 13, the three-way low-voltage power supply further includes a surge protector 16, and the surge protector 16 is connected to the commercial power transmission line section. The surge protector 16 is a conventional device and will not be described in detail herein. When the peak current or voltage is suddenly generated due to external interference, the surge protector 16 can conduct and shunt in a very short time, so as to avoid damage of the surge to other equipment in the line.
Under normal conditions, the utility power supply is adopted, and when the utility power supply is in power failure or has a fault, the utility power supply is switched to the generator for power supply. And when the generator fails and the mains supply does not meet the condition of recovering the power supply, the emergency power supply is started, and the third power supply scheme is realized through the emergency power supply, so that three ways of power supply of the mains supply, the generator and the emergency power supply are realized, and continuous power supply is ensured.
In addition, the switching control between the commercial power and the generator and the input control of the emergency power supply under the condition that the generator fails and the commercial power does not meet the requirement of recovering the power supply can be manually controlled and switched, and the automatic control and switching can be realized through the controller and a switching program in the controller. Of course, the present application protects the hardware structure of the three-way low-voltage power supply device, and does not lie in the switching manner and the switching strategy involved therein.
Fig. 3 is a schematic circuit structure diagram of a three-way low-voltage power supply system according to a second embodiment of the present application. As shown in fig. 3, the three-way low voltage power supply system includes: a generator 22, an emergency power supply 23 and a three-way low-voltage power supply. Wherein, three routes low voltage power supply unit includes: commercial power incoming end 21, generator incoming end, emergency power incoming end and at least one power outlet terminal 24. The commercial power input end 21 is used for connecting with an external commercial power (usually, the commercial power is 220V alternating current) to input the commercial power; the generator access end is connected with the generator 22 to input the electric energy generated by the generator; the access end of the emergency power supply is connected with the emergency power supply 23 so as to input electric energy output by the emergency power supply; the power outlet 24 is a power output of the three-way low-voltage power supply device, i.e. a power output of the three-way low-voltage power supply system, and the specific number thereof is determined by actual power supply requirements. The generator 22 may be a conventional generator, such as a diesel generator; the emergency power supply 23 may be a conventional emergency power supply device, such as a UPS power supply.
The three-way low-voltage power supply device also comprises related line sections, namely a commercial power transmission line section, a generator output line section, an emergency power transmission line section and at least one power output line section corresponding to each power outlet end 24. The utility power input end 21 is connected to one end of each power output line section through a utility power transmission line section, the generator 22 is connected to one end of each power output line section through a generator output line section, the emergency power supply 23 is connected to one end of each power output line section through an emergency power transmission line section, and the other end of each power output line section is connected to a corresponding power outlet end 24.
In one embodiment, as shown in fig. 2, the emergency power inlet is an emergency power outlet (hereinafter referred to as an emergency power outlet) adapted to an emergency power outlet plug of the emergency power supply 23, and the emergency power outlet plug of the emergency power supply 23 can be properly inserted into the emergency power outlet. The form of the socket can be conveniently connected with and disconnected from the emergency power supply 23, and can reliably ensure power transmission, and of course, as other embodiments, other types of electrical connectors, such as an aviation plug, can be used for connecting with the emergency power supply.
In one embodiment, the three-way low-voltage power supply device further comprises an emergency power supply access cabinet, the emergency power supply access cabinet comprises a cabinet body, a cabinet door is arranged on the cabinet body, and the emergency power supply socket is fixedly arranged in the cabinet body. The emergency power supply access cabinet can prevent the emergency power supply socket from being exposed outside, not only can reduce the degree of the emergency power supply socket influenced by external environment (such as rain and snow) and prolong the service life of the emergency power supply socket, but also can prevent related personnel from electric shock accidents and improve the power supply safety. Moreover, the cabinet door can be marked, such as: the emergency power supply access unit is noted. Of course, whether the emergency power supply access cabinet is arranged or not is influenced by factors such as the capacity of the emergency power supply, the field environment and the installation position. In addition, the emergency power socket can be installed on a copper bar (the copper bar needs to meet the current-carrying capacity of the emergency power supply), and is connected with the transmission line section of the emergency power supply through the copper bar.
In one embodiment, the utility transmission line section and the emergency power transmission line section may each be formed by conventional transmission lines and bus sections, and as shown in fig. 3, a transformer may be further provided in the conventional transmission line portion of the utility transmission line section to convert the input ac power into ac power of a desired voltage level. And, can also set up the circuit breaker in the corresponding position in commercial power transmission line section, generator output line section and each power output line section, the input and the excision of the relevant power of being convenient for. Of course, a circuit breaker may also be provided on the emergency power transmission line section. As another implementation, switching of the power supply can be realized without providing a breaker, for example: directly controlling whether the generator 22 or the emergency power supply 23 is operated controls whether the generator 22 or the emergency power supply 23 is turned on.
No matter what the specific structure of the emergency power supply access end is, the three-way low-voltage power supply device further comprises a reactive dynamic compensator 25, and the reactive dynamic compensator 25 is connected with a commercial power transmission line section, so that reactive dynamic compensation is conveniently realized, and the electric energy quality is ensured. The reactive dynamic compensator 25 is a conventional device and will not be described in detail here. In one embodiment, a fuse may be further disposed on the connection line between the reactive dynamic compensator 25 and the commercial power transmission line section, so as to protect the reactive dynamic compensator 25 to a certain extent.
Regardless of the specific structure of the emergency power supply access terminal, the three-way low-voltage power supply device further comprises a surge protector 26, and the surge protector 26 is connected with a commercial power transmission line section. The surge protector 26 is a conventional device and will not be described in detail herein. When a peak current or voltage is suddenly generated due to external interference, the surge protector 26 can conduct shunt in a very short time, so as to avoid damage of surge to other equipment in the line.
For the description of the specific structure, the operation principle and the process of the three-way low-voltage power supply system, reference may be made to the related description of the technical solution of the three-way low-voltage power supply apparatus provided above, and details are not repeated here.
In the above embodiments, the description of each embodiment is focused on, and for parts that are not described or illustrated in detail in a certain embodiment, reference may be made to the description of other embodiments.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (6)
1. A three-way low voltage power supply, comprising:
the mains supply access end is used for connecting a mains supply;
the generator access end is used for connecting a generator;
the emergency power supply access end is used for connecting an emergency power supply;
at least one power outlet terminal;
a commercial power transmission line section;
a generator output line section;
an emergency power transmission line section; and
at least one power output line section corresponding to each power outlet end;
the utility power input end is connected with one end of each power output line section through the utility power transmission line section, the generator input end is connected with one end of each power output line section through the generator output line section, the emergency power input end is connected with one end of each power output line section through the emergency power transmission line section, and the other end of each power output line section is connected with the corresponding power outlet end;
the three-way low-voltage power supply device further comprises a reactive dynamic compensator, and the reactive dynamic compensator is connected with the commercial power transmission line section.
2. The three-way low-voltage power supply device according to claim 1, wherein the emergency power inlet is an emergency power outlet adapted to an emergency power outlet plug of an emergency power supply.
3. The three-way low-voltage power supply device according to claim 2, further comprising an emergency power supply access cabinet, wherein the emergency power supply access cabinet comprises a cabinet body, a cabinet door is disposed on the cabinet body, and the emergency power socket is fixedly disposed in the cabinet body.
4. A three-way low-voltage power supply according to any one of claims 1-3, characterized in that circuit breakers are arranged on the mains electricity transmission line section, the generator output line section and each power output line section.
5. The three-way low-voltage power supply according to any of claims 1-3, characterized in that it further comprises a surge protector, said surge protector being connected to said mains transmission line section.
6. A power supply system, comprising:
a generator;
an emergency power supply; and
a three-way low voltage power supply as claimed in any one of claims 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921066706.2U CN210806740U (en) | 2019-07-09 | 2019-07-09 | Three-way low-voltage power supply device and power supply system |
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| CN201921066706.2U CN210806740U (en) | 2019-07-09 | 2019-07-09 | Three-way low-voltage power supply device and power supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864737A (en) * | 2020-07-23 | 2020-10-30 | 国网北京市电力公司 | Device and method for quickly switching load of festoon lamp |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864737A (en) * | 2020-07-23 | 2020-10-30 | 国网北京市电力公司 | Device and method for quickly switching load of festoon lamp |
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