CN214755553U - Battery energy storage, current transformation and voltage boosting device - Google Patents
Battery energy storage, current transformation and voltage boosting device Download PDFInfo
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- CN214755553U CN214755553U CN202022277514.5U CN202022277514U CN214755553U CN 214755553 U CN214755553 U CN 214755553U CN 202022277514 U CN202022277514 U CN 202022277514U CN 214755553 U CN214755553 U CN 214755553U
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Abstract
The utility model provides a battery energy storage, current transformation and voltage boosting device, which comprises a contact cabinet, a circuit breaker cabinet, a dry-type transformer, a sleeve busbar and a current transformation cabinet; the contact cabinet is connected with the circuit breaker cabinet, the other end of the circuit breaker cabinet is connected with the high-voltage side of the dry-type transformer, and the low-voltage side of the dry-type transformer is connected with the converter cabinet through a sleeve busbar; the converter cabinet is provided with a group of low-voltage side current transformers, the sleeve busbar is connected with the group of low-voltage side current transformers in series, and the low-voltage side current transformers can act on the high-voltage side breaker cabinet to trip when detecting fault current. The utility model discloses a dry-type transformer low pressure side outlet current judges whether break down to action high voltage circuit breaker, the reliability is high, can be applied to singly organize transformer capacity and reach 10000kVA, the high-pressure side voltage reaches 66 kV's occasion. And, the utility model discloses a dry-type transformer high pressure side configuration is simple reasonable.
Description
Technical Field
The utility model relates to an equipment fixing field especially relates to a battery energy storage unsteady flow booster unit.
Background
The battery energy storage, current transformation and voltage boosting device is an important component of an energy storage power station and is a device for realizing energy conversion between an energy storage battery and a power grid. In recent years, modular container type energy storage power stations are rapidly developed, the capacity of the modular container type energy storage power stations is increased, and the capacity of a single variable-flow boosting device is increased from 1250kVA in the early period to 6300kVA or even 10000 kVA. At present, the protection of a transformer and a low-voltage bus by a mainstream energy storage, current transformation and voltage boosting device is still a combination of a high-voltage load switch and a fuse, the mode is low in cost, but along with the increase of the capacity of the transformer, the voltage grade of a high-voltage side is improved, the low-voltage side is short-circuited, particularly when the high-voltage side is short-circuited asymmetrically and a nonmetal side is short-circuited, the fuse cannot be reliably operated by current flowing through the fuse of the high-voltage side, and the short-circuit current of the low-voltage side is very large at the moment, so that the safety of equipment of the low-voltage side is seriously threatened. Therefore, it is necessary to develop a reliable variable-current boosting device.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a battery energy storage unsteady flow booster unit, the reliability is higher, can adapt to the objective requirement that transformer capacity increase, high-pressure side voltage level improve. The utility model adopts the following technical scheme.
A battery energy storage, current transformation and voltage boosting device is characterized by comprising a contact cabinet, a circuit breaker cabinet, a dry-type transformer, a sleeve busbar and a current transformation cabinet; the contact cabinet is connected with the circuit breaker cabinet, the other end of the circuit breaker cabinet is connected with the high-voltage side of the dry-type transformer, and the low-voltage side of the dry-type transformer is connected with the converter cabinet through a sleeve busbar; the converter cabinet is provided with a group of low-voltage side current transformers, the sleeve busbar is connected with the group of low-voltage side current transformers in series, and the low-voltage side current transformers can act on the high-voltage side breaker cabinet to trip when detecting fault current.
Further, the tie cabinet includes earthing switch and electrified display device.
Further, the circuit breaker cabinet includes high-voltage side circuit breaker, arrester, high-voltage side current transformer.
Further, the converter cabinet comprises the low-voltage side current transformer, a plurality of low-voltage side circuit breakers and a plurality of converters; one end of the low-voltage side current transformer is connected with the bushing busbar in series, the other end of the low-voltage side current transformer is connected with one ends of the low-voltage side circuit breakers, and the other ends of the low-voltage side circuit breakers are connected with the alternating current measuring devices of the current transformers one by one.
The utility model has the advantages that: whether a fault occurs is judged through the low-voltage side outlet current of the dry type transformer, the high-voltage circuit breaker is operated, the reliability is high, and the method and the device can be applied to occasions that the capacity of a single group of transformers reaches 10000kVA and the high-voltage side voltage reaches 66 kV. And, the utility model discloses a dry-type transformer high pressure side configuration is simple reasonable.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
Reference is made to the accompanying drawings. The utility model provides a pair of battery energy storage unsteady flow booster unit, including contact cabinet 1, circuit breaker cabinet 2, dry-type transformer 3, female 4, the converter cabinet 5 of arranging of sleeve pipe. The copper bar bus of the contact cabinet 1 is connected with the copper bar bus at the upper part of the circuit breaker cabinet 2, the copper bar outgoing line at the lower part of the circuit breaker cabinet 2 is connected with the high-voltage side of the dry-type transformer 3, and the low-voltage side of the dry-type transformer 3 is connected with the converter cabinet 5 through the sleeve busbar 4. The bushing bus bar 4 is connected in series with a group of low-voltage side current transformers 51, and the low-voltage side current transformers 51 can act on the circuit breaker cabinet 2 to trip when detecting fault current.
The interconnection cabinet 1 includes a grounding switch 11 and a live display device 12.
The breaker cabinet 2 comprises a high-voltage side breaker 21, an arrester 23 and a high-voltage side current transformer 22.
The converter cabinet 5 includes a low-voltage side current transformer 51, three low-voltage side circuit breakers 52, and three converters 53. The low-voltage side current transformer 51 is connected in series on the bushing busbar 4, the other end of the low-voltage side current transformer 51 is connected with one end of three low-voltage side circuit breakers 52, and the other ends of the three low-voltage side circuit breakers 52 are in one-to-one correspondence to be connected with a converter 53 in an alternating current test mode.
The capacity of the dry-type transformer is 5000kVA, the high-voltage side is 35kV, and the low-voltage side is 0.66 kV.
The capacity of the single current transformer 53 is 1500kVA, the rated current of the high-voltage side circuit breaker 21 is 630A, the breaking current of the high-voltage side circuit breaker 21 is 25kA, the rated current of the low-voltage side circuit breaker 52 is 2000A, and the short-circuit breaking current is 63 kA. The converter is a device capable of realizing alternating current and direct current electric energy conversion, and is a mature product.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, i.e. all equivalent changes and modifications made according to the present invention are covered by the scope of the claims of the present invention, which is not illustrated herein.
Claims (4)
1. A battery energy storage, current transformation and voltage boosting device is characterized by comprising a contact cabinet, a circuit breaker cabinet, a dry-type transformer, a sleeve busbar and a current transformation cabinet; the contact cabinet is connected with the circuit breaker cabinet, the other end of the circuit breaker cabinet is connected with the high-voltage side of the dry-type transformer, and the low-voltage side of the dry-type transformer is connected with the converter cabinet through a sleeve busbar; the converter cabinet is provided with a group of low-voltage side current transformers, the sleeve busbar is connected with the group of low-voltage side current transformers in series, and the low-voltage side current transformers can act on the high-voltage side breaker cabinet to trip when detecting fault current.
2. The battery energy storage, current transformation and voltage boosting device as claimed in claim 1, wherein said interconnection cabinet comprises a grounding switch and a live display device.
3. A battery energy storage, conversion and boosting apparatus as claimed in claim 1, wherein said circuit breaker cabinet comprises a high-side circuit breaker, a lightning arrester, and a high-side current transformer.
4. A battery energy storage, conversion and boosting apparatus as claimed in claim 1, wherein said converter cabinet comprises said low-voltage side current transformer, a plurality of low-voltage side circuit breakers, a plurality of converters; one end of the low-voltage side current transformer is connected with the bushing busbar in series, the other end of the low-voltage side current transformer is connected with one ends of the low-voltage side circuit breakers, and the other ends of the low-voltage side circuit breakers are connected with the alternating current measuring devices of the current transformers one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022277514.5U CN214755553U (en) | 2020-10-14 | 2020-10-14 | Battery energy storage, current transformation and voltage boosting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022277514.5U CN214755553U (en) | 2020-10-14 | 2020-10-14 | Battery energy storage, current transformation and voltage boosting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214755553U true CN214755553U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022277514.5U Active CN214755553U (en) | 2020-10-14 | 2020-10-14 | Battery energy storage, current transformation and voltage boosting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214755553U (en) |
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2020
- 2020-10-14 CN CN202022277514.5U patent/CN214755553U/en active Active
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