CN218586893U - Reactive power compensation device of no-load transformer - Google Patents
Reactive power compensation device of no-load transformer Download PDFInfo
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- CN218586893U CN218586893U CN202222366470.2U CN202222366470U CN218586893U CN 218586893 U CN218586893 U CN 218586893U CN 202222366470 U CN202222366470 U CN 202222366470U CN 218586893 U CN218586893 U CN 218586893U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The utility model provides a reactive power compensator of no-load transformer, including transformer bus, transformer bus passes through circuit transformer and supplements the compensation line connection, the one end that supplements the compensation line loops through first fuse, an ac contactor and a thermal relay and is connected with first condenser. The utility model discloses a calculation compensation reactive power quantity, increase low pressure reactive compensation, install low pressure power capacitor additional, guarantee to avoid the compensation when no-load or light load, send reactive, cause the power loss to increase, the economic loss who brings, can make idle not flow backwards, guarantee that user power factor is in lag state all the time, existing user that is favorable to, also be favorable to the electric wire netting, solved the not supporting or unreasonable use of consumer, cause the waste of the long-term underload of equipment or idle running to the electric energy.
Description
Technical Field
The utility model belongs to the technical field of electrical engineering, a reactive power compensator of no-load transformer is related to.
Background
The 10KV high-voltage power supply and distribution system usually adopts a single-circuit power supply mode, due to the process requirements of a carbon black production line and a tail gas power station and the particularity of equipment, the process system needs to be ensured to be rapidly recovered to a production state when power is cut off, part of the equipment needs to provide an uninterruptible power supply, the improvement scheme is that one 400KVA transformer is newly added and used as a standby power supply, and the standby power supply is in a standby state for a long time, so that the transformer is in no-load state for a long time, the reactive loss is large, and the power factor is low. Therefore, it is necessary to design a reactive power compensation device for a no-load transformer.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reactive power compensator of no-load transformer to the problem that prior art exists, solved the electrical equipment and not supporting or unreasonable use, cause equipment to underload or the idle running problem extravagant to the electric energy for a long time.
Therefore, the utility model adopts the following technical proposal:
the utility model provides a reactive power compensator of no-load transformer, includes transformer bus (1), transformer bus (1) is connected with supplementary compensation circuit (3) through circuit transformer (2), the one end of supplementary compensation circuit (3) loops through first fuse (4), first ac contactor (5) and first thermorelay (6) and is connected with first condenser (7), the other end of supplementary compensation circuit (3) loops through second fuse (8), second ac contactor (9) and second thermorelay (10) and is connected with second condenser (11), first condenser (7), second condenser (11) and overvoltage protection ware (12) are all connected on compensation circuit (3).
Furthermore, the second capacitor (11) adopts a low-voltage power capacitor with the model number of BSM-0-0.45-1-3-D.
The beneficial effects of the utility model reside in that:
the utility model discloses a calculation compensation reactive power quantity, increase low pressure reactive compensation, install low pressure power capacitor additional, the input fund is little, guarantee to avoid the compensation when no-load or light load, send down idle, cause the power loss to increase, the economic loss who brings, can make idle not flow backwards, guarantee that user power factor is in lag state all the time, existing do benefit to the user, also be favorable to the electric wire netting, the use of having solved the consumer and not supporting or unreasonable, cause the waste of equipment underload or idle running to the electric energy for a long time.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a transformer bus; 2. a circuit transformer; 3. a compensation circuit is supplemented; 4. a first fuse; 5. a first AC contactor; 6. a first thermal relay; 7. a first capacitor; 8. a second fuse; 9. a second AC contactor; 10. a second thermal relay; 11. a second capacitor; 12. an overvoltage protector.
Detailed Description
The technical solution of the present invention will be described below with reference to the accompanying drawings and implementation methods.
As shown in fig. 1, a reactive power compensation device of a no-load transformer comprises a transformer bus (1), the transformer bus (1) is connected with a supplementary compensation circuit (3) through a circuit transformer (2), one end of the supplementary compensation circuit (3) sequentially passes through a first fuse (4), a first alternating current contactor (5) and a first thermal relay (6) are connected with a first capacitor (7), the other end of the supplementary compensation circuit (3) sequentially passes through a second fuse (8), a second alternating current contactor (9) and a second thermal relay (10) are connected with a second capacitor (11), and the first capacitor (7), the second capacitor (11) and an overvoltage protector (12) are connected on the compensation circuit (3) to perform reactive power compensation on a system, protect the system and lightning overvoltage.
Specifically, the second capacitor (11) adopts a low-voltage power capacitor with the model number of BSM-0-0.45-1-3-D.
The determined calculation formula of the compensation capacity is as follows: q = P x (tan phi 0-tan phi) KPav, wherein P is the average active power KW of the user at the highest load month, tan phi 0 corresponds to the tangent value of the power factor angle when the actual power factor COS phi 0 is before compensation, and tan phi compensates the tangent value of the actual power factor COS phi corresponds to the power factor angle when the actual power factor COS phi is after compensation (the values of COS phi 0, tan phi 0 and tan phi when COS phi are found from the trigonometric function table, and the compensation capacity value can be obtained by substituting the values into the formula).
The utility model discloses use as follows, transformer bus (1) is connected with supplementary compensation circuit (3) through circuit transformer (2) during transformer normal operating, loop through first fuse (4), compensation when being connected with first condenser (7) and constituting full load operation is connected in first ac contactor (5) and first thermorelay (6), the compensation of institute is controlled by former reactive automatic compensation controller, but first ac contactor (5) of transformer disconnection when no-load, first condenser (7) disconnection, the other end of supplementary compensation circuit (3) loops through second fuse (8), second ac contactor (9) and second thermorelay (10) are connected with second condenser (11), the compensation of reactive compensation volume when no-load is accomplished through connecting at supplementary compensation circuit in second condenser (11).
Claims (2)
1. The utility model provides a reactive power compensator of no-load transformer, characterized in that, includes transformer bus (1), transformer bus (1) passes through circuit transformer (2) and is connected with supplementary compensation circuit (3), the one end of supplementary compensation circuit (3) loops through first fuse (4), first ac contactor (5) and first thermorelay (6) and is connected with first condenser (7), the other end of supplementary compensation circuit (3) loops through second fuse (8), second ac contactor (9) and second thermorelay (10) and is connected with second condenser (11), first condenser (7), second condenser (11) and overvoltage protector (12) are all connected on compensation circuit (3).
2. Reactive compensation device for no-load transformer according to claim 1, characterized in that the second capacitor (11) is a low voltage power capacitor of type BSM-0-0.45-1-3-D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222366470.2U CN218586893U (en) | 2022-09-06 | 2022-09-06 | Reactive power compensation device of no-load transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222366470.2U CN218586893U (en) | 2022-09-06 | 2022-09-06 | Reactive power compensation device of no-load transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218586893U true CN218586893U (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222366470.2U Active CN218586893U (en) | 2022-09-06 | 2022-09-06 | Reactive power compensation device of no-load transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218586893U (en) |
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2022
- 2022-09-06 CN CN202222366470.2U patent/CN218586893U/en active Active
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