CN203896009U - On-line discharge control modular circuit for transformer station storage battery - Google Patents
On-line discharge control modular circuit for transformer station storage battery Download PDFInfo
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- CN203896009U CN203896009U CN201420196912.6U CN201420196912U CN203896009U CN 203896009 U CN203896009 U CN 203896009U CN 201420196912 U CN201420196912 U CN 201420196912U CN 203896009 U CN203896009 U CN 203896009U
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- 230000001681 protective effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 10
- 230000005855 radiation Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses an on-line discharge control modular circuit for a transformer station storage battery. The on-line discharge control modular circuit comprises a first freewheeling diode, a major loop contactor, a charging contactor, a first direct current bus, and a second direct current bus. The major loop contactor and the charging contactor are connected with the first freewheeling diode in parallel. The positive of the first freewheeling diode is connected to the positive of the transformer station storage battery. The first direct current bus is connected with the negative of the transformer station storage battery. The second direct current bus is connected with the negative of the first freewheeling diode. With the discharge control modular circuit, the discharge process is enabled to be safe, energy-saving and environment-friendly; a storage battery cannot be disengaged from the bus in the discharge process, direct current discharged by the storage battery is converted into alternating current with the frequency and phase identical to that of commercial power, and then the alternating current is fed to an electrical network; and when commercial power or a charging device fails in the storage battery discharge process, discharge of the storage battery is immediately stopped and power supply for the bus is activated.
Description
Technical field
The utility model relates to inverter power circuit, is specifically related to a kind of online control of discharge modular circuit for storage batteries of transformer substation.
Background technology
At present, power industry generally adopts " load type " discharge technology to carry out storage battery checking discharge test, finds out the problem that batteries and cell exist.In practice process, find that the method exists the shortcomings such as complicated operation, workload are large, heating potential safety hazard.
But, no matter adopt electrothermal device or active inversion electric discharge device to carry out storage battery I
10discharge test, batteries must depart from DC bus, is substituted by standby battery group.The in the situation that of only having a group storage battery group in station, in core discharge capacitor, once there is the faults such as commercial power interruption, batteries can not provide back-up source and bring potential safety hazard to DC bus in time.
Utility model content
The purpose of this utility model is to provide a kind of online control of discharge modular circuit for storage batteries of transformer substation, realize safe, the energy-conservation and environmental protection of discharge process, battery discharging process is without departing from bus, the DC inverter that storage battery is emitted becomes and the alternating current feedback grid of civil power with frequency homophase, in battery discharging process, meet the abnormal conditions such as mains failure or charging device fault, stop immediately electric discharge, proceed to bussed supply.
In order to achieve the above object, the utility model is achieved through the following technical solutions: a kind of online control of discharge modular circuit for storage batteries of transformer substation, be characterized in, and comprise:
One first fly-wheel diode;
Major loop contactor and the charging contactor in parallel with the first fly-wheel diode;
The positive pole of described the first fly-wheel diode is connected to the positive pole of storage batteries of transformer substation;
One first DC bus, connects the negative pole of described storage batteries of transformer substation;
One second DC bus, connects the negative pole of described the first fly-wheel diode.
The negative pole of the first described fly-wheel diode is connected to the second DC bus by one first major loop protective tube.
Described the first DC bus and the second DC bus are connected to alternating current bus bar by a charging module.
Between the first described DC bus and the negative pole of described storage batteries of transformer substation, be provided with the second major loop protective tube.
Preferably, online control of discharge modular circuit further comprises second fly-wheel diode in parallel with the first fly-wheel diode, the positive pole of described the second fly-wheel diode is connected with the positive pole of the first fly-wheel diode, and its negative pole is connected with the negative pole of described the first fly-wheel diode.
Preferably, online control of discharge modular circuit further comprises an emergency button, and described emergency button is in parallel with described major loop contactor.
Preferably, online control of discharge modular circuit further comprises the current-limiting charge resistance of a pair of parallel connection, with the positive pole that is connected storage batteries of transformer substation after described charging contactor series connection.
A kind of online control of discharge modular circuit for storage batteries of transformer substation of the utility model compared with prior art has the following advantages: storage batteries of transformer substation discharge process does not depart from bus, realizes safe-discharge; Access direct current system is simple, improves core discharge capacitor experiment work efficiency; Without carrying heavy back-up source, reduce labour intensity; On-line monitoring " line voltage ", " busbar voltage " and " inverter voltage ", once occur extremely, to proceed to DC bus powered.
Brief description of the drawings
Fig. 1 is a kind of online control of discharge modular circuit overall structure schematic diagram for storage batteries of transformer substation of the utility model.
Fig. 2 is that the utility model is implemented illustration.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the utility model is further elaborated.
As shown in Figure 1, a kind of online control of discharge modular circuit for storage batteries of transformer substation, comprises: one first fly-wheel diode 1(model: MURT20060, adopts fin heat radiation, security insurance); The major loop contactor 2(model in parallel with the first fly-wheel diode 1: BCZ4-200-0111) and charging contactor 3; The positive pole of described the first fly-wheel diode 1 is connected to the positive pole of storage batteries of transformer substation 4; One first DC bus 5, connects the negative pole of described storage batteries of transformer substation 4; One second DC bus 6, connects the negative pole of described the first fly-wheel diode 1.The negative pole of the first fly-wheel diode 1 is connected to the second DC bus 6 by one first major loop protective tube 7.
The first DC bus 5 and the second DC bus 6 are connected to alternating current bus bar by a charging module 8.
Between the first DC bus 5 and the negative pole of described storage batteries of transformer substation 4, be provided with the second major loop protective tube 9.
Further, online control of discharge modular circuit comprises second fly-wheel diode 10(model: the MURT20060 in parallel with the first fly-wheel diode 1, the heat radiation of employing fin, security insurance), the positive pole of described the second fly-wheel diode 10 is connected with the positive pole of the first fly-wheel diode 1, and its negative pole is connected with the negative pole of described the first fly-wheel diode 1.
Further, it is GM5-63/2-C-63-08 that online control of discharge modular circuit comprises an emergency button 11(model), described emergency button 11 is in parallel with described major loop contactor 2.Emergency button 11, the anodal loop of manual closing storage batteries of transformer substation 4, forced charge electric discharge, prevents that the contact contact of major loop contactor 2 is bad; Promptly in particular cases use, disconnect at ordinary times.
Further, the current-limiting charge resistance 12(that online control of discharge modular circuit comprises a pair of parallel connection adopts high-power resistance resistance 2R500W or 5R500W, model is RXLG-500W-5RJ, the heat radiation of employing fin, security insurance), charging when minimizing pressure reduction is large is impacted, with the positive pole that is connected storage batteries of transformer substation 4 after described charging contactor 3 series connection.
Concrete application: as shown in Figure 2, this online control of discharge modular circuit is applied in storage batteries of transformer substation active inversion system, storage batteries of transformer substation 4 connects an active inverter 13, active inverter 13 is converted into alternating current for actual loading the direct current energy of storage batteries of transformer substation 4, transformation efficiency is high, caloric value is little, safe and reliable.
When electric discharge, because DC bus (the first DC bus 5 and the second DC bus 6) voltage is higher than storage batteries of transformer substation 4 terminal voltages, the first fly-wheel diode 1 and the second fly-wheel diode 10 oppositely have voltage, now the first fly-wheel diode 1 and the second fly-wheel diode 10 end, and now charging module 8 charges to storage batteries of transformer substation 4.
In discharge process, civil power had fault or charging module 8 complete shut-downs cause DC bus-bar voltage decline, if DC bus-bar voltage causes DC bus-bar voltage lower than storage batteries of transformer substation 4 terminal voltages extremely, the first fly-wheel diode 1 and the second fly-wheel diode 10 conductings, storage batteries of transformer substation 4 is given DC bus powered, the TURP of storage batteries of transformer substation 4 is given load and is used, and not power-off is switched in proof load.
When electric discharge starts, the major loop contactor 2 of normally-closed contact disconnects, and storage batteries of transformer substation 4 forms discharge loop with active inverter 13.
In discharge off certain hour (as 10 minutes); the discharge loop of active inverter 13 disconnects, charging contactor 3 closures, and the charging current of charging module 8 charges to storage batteries of transformer substation 4 through the current-limiting charge resistance 12 of a pair of parallel connection; avoid large current charge, protection storage batteries of transformer substation 4.
After discharge off certain hour (as 10 minutes), major loop contactor 2 closures, charging module 8 charges directly to storage batteries of transformer substation 4 without the current-limiting charge resistance 12 of a pair of parallel connection.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.Read after foregoing those skilled in the art, for multiple amendment of the present utility model and substitute will be all apparent.Therefore, protection range of the present utility model should be limited to the appended claims.
Claims (7)
1. for an online control of discharge modular circuit for storage batteries of transformer substation, it is characterized in that, comprise:
One first fly-wheel diode (1);
The major loop contactor (2) in parallel with the first fly-wheel diode (1) and charging contactor (3);
The positive pole of described the first fly-wheel diode (1) is connected to the positive pole of storage batteries of transformer substation (4);
One first DC bus (5), connects the negative pole of described storage batteries of transformer substation (4);
One second DC bus (6), connects the negative pole of described the first fly-wheel diode (1).
2. online control of discharge modular circuit as claimed in claim 1, is characterized in that, the negative pole of described the first fly-wheel diode (1) is connected to the second DC bus (6) by one first major loop protective tube (7).
3. online control of discharge modular circuit as claimed in claim 1, is characterized in that, described the first DC bus (5) and the second DC bus (6) are connected to alternating current bus bar by a charging module (8).
4. online control of discharge modular circuit as claimed in claim 1, is characterized in that, between described the first DC bus (5) and the negative pole of described storage batteries of transformer substation (4), is provided with the second major loop protective tube (9).
5. online control of discharge modular circuit as claimed in claim 1, it is characterized in that, further comprise second fly-wheel diode (10) in parallel with the first fly-wheel diode (1), the positive pole of described the second fly-wheel diode (10) is connected with the positive pole of the first fly-wheel diode (1), and its negative pole is connected with the negative pole of described the first fly-wheel diode (1).
6. online control of discharge modular circuit as claimed in claim 1, is characterized in that, further comprises an emergency button (11), and described emergency button (11) is in parallel with described major loop contactor (2).
7. online control of discharge modular circuit as claimed in claim 1, is characterized in that, further comprises the current-limiting charge resistance (12) of a pair of parallel connection, with the positive pole that is connected storage batteries of transformer substation (4) after described charging contactor (3) series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420196912.6U CN203896009U (en) | 2014-04-22 | 2014-04-22 | On-line discharge control modular circuit for transformer station storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420196912.6U CN203896009U (en) | 2014-04-22 | 2014-04-22 | On-line discharge control modular circuit for transformer station storage battery |
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| Publication Number | Publication Date |
|---|---|
| CN203896009U true CN203896009U (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420196912.6U Expired - Lifetime CN203896009U (en) | 2014-04-22 | 2014-04-22 | On-line discharge control modular circuit for transformer station storage battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107390142A (en) * | 2017-09-13 | 2017-11-24 | 国网黑龙江省电力有限公司佳木斯供电公司 | Transforming plant DC power supply status monitoring system and the method for power supply status monitoring |
| CN108390444A (en) * | 2018-05-11 | 2018-08-10 | 江苏盐开电气有限公司 | Automatic discharge device and its control method |
| CN109921500A (en) * | 2019-04-23 | 2019-06-21 | 深圳供电局有限公司 | Output regulation and control circuit and charger |
| CN111106643A (en) * | 2019-12-20 | 2020-05-05 | 龙滩水电开发有限公司龙滩水力发电厂 | 48V communication power supply system and online discharge control method of storage battery thereof |
| CN112087017A (en) * | 2020-07-27 | 2020-12-15 | 国网综合能源服务集团有限公司 | Transformer substation direct-current power supply battery management system and battery management method thereof |
-
2014
- 2014-04-22 CN CN201420196912.6U patent/CN203896009U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107390142A (en) * | 2017-09-13 | 2017-11-24 | 国网黑龙江省电力有限公司佳木斯供电公司 | Transforming plant DC power supply status monitoring system and the method for power supply status monitoring |
| CN107390142B (en) * | 2017-09-13 | 2023-08-15 | 国网黑龙江省电力有限公司佳木斯供电公司 | Transformer substation direct-current power supply state monitoring system and power supply state monitoring method |
| CN108390444A (en) * | 2018-05-11 | 2018-08-10 | 江苏盐开电气有限公司 | Automatic discharge device and its control method |
| CN109921500A (en) * | 2019-04-23 | 2019-06-21 | 深圳供电局有限公司 | Output regulation and control circuit and charger |
| CN111106643A (en) * | 2019-12-20 | 2020-05-05 | 龙滩水电开发有限公司龙滩水力发电厂 | 48V communication power supply system and online discharge control method of storage battery thereof |
| CN112087017A (en) * | 2020-07-27 | 2020-12-15 | 国网综合能源服务集团有限公司 | Transformer substation direct-current power supply battery management system and battery management method thereof |
| CN112087017B (en) * | 2020-07-27 | 2024-04-02 | 国网综合能源服务集团有限公司 | Battery management system and battery management method for direct-current power supply of transformer substation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20141022 |
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| CX01 | Expiry of patent term |