CN214045032U - Novel intelligent direct current of transformer substation screen - Google Patents
Novel intelligent direct current of transformer substation screen Download PDFInfo
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- CN214045032U CN214045032U CN202023101965.XU CN202023101965U CN214045032U CN 214045032 U CN214045032 U CN 214045032U CN 202023101965 U CN202023101965 U CN 202023101965U CN 214045032 U CN214045032 U CN 214045032U
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Abstract
The utility model belongs to the technical field of power equipment, specifically disclose a novel intelligent direct current screen of transformer substation, this direct current screen includes a plurality of parallelly connected direct current units, direct current unit is including the alternating current of connecting gradually become direct current module AC/DC and direct current become direct current boost module DC/DC, all be connected with direct current battery module between alternating current becomes direct current module AC/DC and the direct current becomes direct current boost module DC/DC, direct current battery module's output direct current voltage V1 equals the direct current voltage V2 of alternating current becomes direct current module AC/DC output; each direct current unit can be operated independently and operated in parallel, and after one direct current unit fails, the operation can be quitted, so that the direct current power supply of the whole system is not influenced, the parallel operation of a plurality of direct current units is realized, and the power supply reliability is improved; the product investment is small, and the occupied area is small; the direct-current battery module adopts a low-voltage mode, so that distributed uninterrupted power supply is convenient to realize; the modular structure design is convenient for assembly and maintenance.
Description
Technical Field
The utility model belongs to the technical field of power equipment's technique and specifically relates to a novel intelligent direct current of transformer substation screen.
Background
The direct current system of the transformer substation mainly comprises a direct current screen and a battery screen and provides a working power supply for a relay protection device and a breaker of the transformer substation.
The DC screen has the functions of transforming and rectifying the AC into DC, storing the DC in the battery screen and outputting the DC. With the rapid development of computer technology and communication technology, power systems gradually develop towards the direction of integrated automation, networked centralized management and unattended operation of power stations or power plants. The automatic system needs to take measures to deal with potential safety hazards, as an important component of the power system, the direct current screen applies a large number of scientific technologies, and a high-performance integrated controller is selected to monitor each operation link of the direct current screen; the battery inspection unit is selected to ensure that the voltage of the storage battery (the storage battery can ensure that the system normally operates under the condition of power failure or the condition of power failure caused by damage of the direct-current power supply system) is normal, if the phenomenon of deterioration of the storage battery is found, the storage battery inspection unit can be timely processed, so that the direct-current power supply can be still provided outwards in time even under the condition of power failure, and accidents are avoided.
In the use process, if the battery screen and the direct current screen break down, the safe operation of the whole transformer substation is influenced, and at present, in order to solve the problem, the transformer substation is often solved by adopting a scheme of additionally purchasing a set of direct current screen, but the scheme has the defects of large repeated investment and large occupied area.
SUMMERY OF THE UTILITY MODEL
To the problem among the prior art, the utility model aims at providing a novel intelligent direct current of transformer substation screen.
In order to achieve the above purpose, the technical scheme of the utility model is that:
the utility model provides a novel intelligent direct current of transformer substation screen, this direct current screen include a plurality of parallelly connected direct current units, direct current unit is including the alternating current of connecting gradually become direct current module AC/DC and direct current become direct current boost module DC/DC, all be connected with direct current battery module between alternating current becomes direct current module AC/DC and the direct current becomes direct current boost module DC/DC, the output direct current voltage V of direct current battery module1A DC voltage V equal to the AC/DC output of the AC/DC conversion module2。
Further, a first protection module is arranged between the alternating current-direct current module AC/DC and the direct current-direct current boosting module DC/DC.
Further, the direct current battery module is connected between the alternating current-to-direct current module AC/DC and the direct current-to-direct current boosting module DC/DC through a second protection module.
Further, the first protection module and the second protection module are both miniature circuit breakers.
Furthermore, the alternating current/direct current module AC/DC is a rectification circuit containing boost APFC and PWN.
Further, the direct current-to-direct current boosting module DC/DC is a single-tube forward circuit.
Further, the system also comprises a monitoring unit, wherein the monitoring unit is HPSM 10X.
Further, the output module of the direct current screen comprises a combined mother direct current output unit and a control mother direct current output unit.
Compared with the prior art, the utility model provides a pair of novel intelligent direct current of transformer substation screen structure is unusual, decomposes into a plurality of low capacity direct current units and direct current battery module with direct current screen and battery screen, and every direct current battery module adopts the low voltage mode, makes up with a plurality of modules according to the on-the-spot needs, and every direct current unit contains alternating current-to-direct current module AC/DC, direct current-to-direct current boost module DC/DC and direct current battery module.
Each direct current unit can be operated independently and operated in parallel, and after one direct current unit fails, the operation can be quitted, so that the direct current power supply of the whole system is not influenced, and further the realization is realized:
1) the plurality of direct current units are operated in parallel, so that the power supply reliability is improved;
2) the product investment is small, and the occupied area is small;
3) the battery screen adopts a low-voltage mode, so that distributed uninterrupted power supply is convenient to realize;
4) the modular structure design is convenient for assembly and maintenance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a structural diagram of a novel intelligent direct-current screen of a transformer substation.
Fig. 2 is a schematic structural diagram of a dc unit.
In the figure: 1. the direct current screen, 2, the output module, 3, the direct current unit.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, as a preferred embodiment of the present invention, the new intelligent DC screen for a transformer substation, the DC screen 1 includes a plurality of DC units 3 connected in parallel, the DC units 3 include an AC-to-DC module AC/DC and a DC-to-DC boost module DC/DC connected in sequence, it should be noted that, the AC-to-DC module AC/DC is used to convert AC high voltage into low voltage DC power, the DC-to-DC boost module DC/DC is used to convert low voltage DC power output by the AC-to-DC module AC/DC into high voltage DC power, a DC battery module is connected between the AC-to-DC module AC/DC and the DC-to-DC boost module DC/DC, an output DC voltage V1 of the DC battery module is equal to a DC voltage V2 output by the AC-to-DC module AC/DC, further, when the AC/DC conversion module has a fault, the DC battery module can continuously output a low-voltage DC power supply to the DC/DC conversion boosting module DC/DC, so that the corresponding single DC unit 3 can operate independently, and a standby power supply can be provided to realize the exit of the single DC unit 3, and the other parallel DC units 3 can supply power normally, compared with the single high-voltage battery panel connected in series with the traditional DC panel 1, when the DC panel 1 has a fault, the power supply maintenance time of the single high-voltage battery panel is short, but the application converts the DC panel 1 into a plurality of DC units 3, when one of the DC units has a fault, the other DC units 3 can operate normally, and the battery panel is divided into a plurality of DC battery modules corresponding to the DC units 3 to provide that the standby power supply discharges continuously when each DC unit 3 has a fault, compared with the traditional monoblock battery screen, the power supply is safer, and the whole system is in an open circuit state so as not to normally operate after the battery screen fails.
Use the utility model provides a during novel intelligent direct current of transformer substation screen, with direct current screen 1 and battery screen decomposition into a plurality of low capacity direct current unit 3 and direct current battery module, every direct current battery module adopts the low-voltage mode, makes up with a plurality of modules according to the on-the-spot needs, every direct current unit 3 contains alternating current direct current module AC/DC, direct current boost module DC/DC and direct current battery module.
Each direct current unit 3 can be operated independently and operated in parallel, and after one direct current unit 3 fails, the operation can be quitted, so that the direct current power supply of the whole system is not influenced, and further the following effects are achieved: the plurality of direct current units 3 are operated in parallel, so that the power supply reliability is improved; the product investment is small, and the occupied area is small; the battery screen adopts a low-voltage mode, so that distributed uninterrupted power supply is convenient to realize; the modular structure design is convenient for assembly and maintenance.
On the basis of the embodiment, a first protection module is arranged between the alternating current-to-direct current module AC/DC and the direct current-to-direct current boosting module DC/DC, the direct current battery module is connected between the alternating current-to-direct current module AC/DC and the direct current-to-direct current boosting module DC/DC through a second protection module, the first protection module and the second protection module are used for monitoring, and a circuit is opened or closed according to the abnormity of the circuit, so that the circuit is protected.
More specifically, first protection module and second protection module can both be miniature circuit breaker, and miniature circuit breaker is existing equipment, and concrete principle and structure are no longer elaborated on in detail.
On the basis of the above embodiment, the AC/DC module is a rectifying circuit including boost APFC and PWN.
On the basis of the above embodiments, the DC-to-DC boost module DC/DC is a single-tube forward circuit.
For better basic effect, the system also comprises a monitoring unit, wherein the monitoring unit is HPSM10X, and is controlled by a single chip microcomputer to realize acquisition of module output voltage and current; the startup and shutdown, uniform floating charge, voltage output and current limiting output control are realized; realizing power supply parameter setting and parameter calibration; the 'four remote' function is realized through the RS485 communication port.
Specifically, the output module 2 of the direct current screen 1 is provided with a combined mother direct current output unit and a controlled mother direct current output unit, the combined mother direct current output unit is a power supply for controlling the high-voltage cabinet to be switched on, the controlled mother direct current output unit is a power supply for controlling the power supply to output stable voltage such as direct current 220V 110V 48V, the combined mother direct current output unit is a switch switching-on and switching-off power supply, a controlled mother is a secondary relay protection power supply, the combined mother direct current output unit is a short name of a switching-on bus and is used for charging a storage battery, and the controlled mother direct current output unit is a short name of a control bus and is used for reducing the voltage to 220V through a chopper.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a novel intelligent direct current of transformer substation screen, its characterized in that, this direct current screen include a plurality of parallelly connected direct current units, direct current unit is including the alternating current of connecting gradually become direct current module AC/DC and direct current become direct current booster module DC/DC, all be connected with direct current battery module between alternating current becomes direct current module AC/DC and the direct current becomes direct current booster module DC/DC, direct current battery module's outputDC voltage V1A DC voltage V equal to the AC/DC output of the AC-DC conversion module2。
2. The novel intelligent direct current screen of transformer substation of claim 1, characterized in that be provided with first protection module between alternating current to direct current module AC/DC and direct current to direct current boost module DC/DC.
3. The novel intelligent substation direct current screen of claim 2, wherein the direct current battery module is connected between the alternating current-to-direct current (AC/DC) module and the direct current-to-direct current (DC/DC) boosting module through a second protection module.
4. The novel intelligent substation direct current panel of claim 3, wherein the first and second protection modules are miniature circuit breakers.
5. The novel intelligent substation direct current screen of claim 1, wherein the alternating current-to-direct current module AC/DC is a rectification circuit comprising boost APFC and PWN.
6. The novel intelligent direct current screen of transformer substation of claim 1, characterized in that, the direct current change direct current boost module DC/DC is single tube forward circuit.
7. The novel intelligent substation direct current screen of claim 1, further comprising a monitoring unit, wherein the monitoring unit is HPSM 10X.
8. The novel intelligent substation direct current panel of claim 1, wherein the output module of the direct current panel comprises a combined bus direct current output unit and a controlled bus direct current output unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202023101965.XU CN214045032U (en) | 2020-12-21 | 2020-12-21 | Novel intelligent direct current of transformer substation screen |
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| CN202023101965.XU CN214045032U (en) | 2020-12-21 | 2020-12-21 | Novel intelligent direct current of transformer substation screen |
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| CN214045032U true CN214045032U (en) | 2021-08-24 |
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| CN202023101965.XU Active CN214045032U (en) | 2020-12-21 | 2020-12-21 | Novel intelligent direct current of transformer substation screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113922476A (en) * | 2021-09-30 | 2022-01-11 | 石家庄通合电子科技股份有限公司 | High-safety module group direct-current power supply |
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2020
- 2020-12-21 CN CN202023101965.XU patent/CN214045032U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113922476A (en) * | 2021-09-30 | 2022-01-11 | 石家庄通合电子科技股份有限公司 | High-safety module group direct-current power supply |
| CN113922476B (en) * | 2021-09-30 | 2024-03-26 | 石家庄通合电子科技股份有限公司 | High-safety module group direct-current power supply |
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