CN207743761U - A kind of modularized distribution type batteries in parallel connection straight-flow system - Google Patents
A kind of modularized distribution type batteries in parallel connection straight-flow system Download PDFInfo
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- CN207743761U CN207743761U CN201721733084.5U CN201721733084U CN207743761U CN 207743761 U CN207743761 U CN 207743761U CN 201721733084 U CN201721733084 U CN 201721733084U CN 207743761 U CN207743761 U CN 207743761U
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Abstract
A kind of modularized distribution type batteries in parallel connection straight-flow system, including：Secondary device room straight-flow system module and 110kV and 10kV power distribution equipment straight-flow system modules, bus connection switch is provided between secondary device room straight-flow system module and the DC bus of 110kV and 10kV power distribution equipment straight-flow system modules.Secondary device room straight-flow system module and 110kV and 10kV power distribution equipment straight-flow system modules all separately include：The intelligent battery component of multiple parallel connections, one end connect DC bus, and the other end connects Alternating Current Unit；DC monitoring system module connects DC bus；Intelligent feeder line unit connects DC bus.The utility model arranges straight-flow system using modularized distribution type nearby, and uses the indirect parallel way of accumulator, greatly reduces direct current cables usage amount, reduces the probability of D.C. isolation failure, improves the reliability of straight-flow system power supply.
Description
Technical field
The utility model is related to a kind of modularized distribution type batteries in parallel connection straight-flow systems.
Background technology
As shown in Figure 1, the straight-flow system of traditional substation is by charging assembly, accumulator group, battery data logging device, insulating monitoring
Instrument, DC monitoring system and feeder unit composition.Busbar voltage is obtained by accumulator overlapped in series, all loads concentrate on together
On one DC bus, since DC feeder screen centralized arrangement is in control room, need a large amount of cable to DC load.In addition, by
Use centralized arrangement, the accumulator group more than 300AH that independent battery room need to be specially set in the mounting means of accumulator, and
Configure explosion-proof air-conditioner.The reliability of this arrangement is not high, is limited to the quality of single-unit accumulator, and accumulator need to carry out offline
It safeguards, manual operation accumulator group is out of service, and does full capacity core and hold experiment, at least needs to spend 2 ~ 3 day working hour of 2 people, consumption
Time-consuming length.
Utility model content
The utility model provides a kind of modularized distribution type batteries in parallel connection straight-flow system, by straight-flow system using modularization point
Cloth is arranged nearby, and uses the indirect parallel way of accumulator, is greatly reduced direct current cables usage amount, is reduced D.C. isolation
The probability of failure improves the reliability of straight-flow system power supply.
In order to achieve the above object, the utility model provides a kind of modularized distribution type batteries in parallel connection straight-flow system, including：
Secondary device room straight-flow system module and 110kV and 10kV power distribution equipment straight-flow system modules, secondary device room straight-flow system mould
It is provided with bus connection switch between block and the DC bus of 110kV and 10kV power distribution equipment straight-flow system modules；
The secondary device room straight-flow system module and 110kV and 10kV power distribution equipment straight-flow system modules is all wrapped respectively
Contain：
The intelligent battery component of multiple parallel connections, one end connect DC bus, and the other end connects Alternating Current Unit；
DC monitoring system module connects DC bus；
Intelligent feeder line unit connects DC bus.
The intelligent battery component includes：
Accumulator；
AC/DC circuits are electrically connected DC/DC circuits and charging DC/DC circuits, for being converted to 220V AC voltage
On the one hand to charge the battery on the other hand DC voltage passes through boost conversion into DC110V；
DC/DC circuits are electrically connected AC/DC circuits, charging DC/DC circuits and electric discharge DC/DC circuits, and being used for will
AC220V ac voltage rectifiers at DC voltage boost, be converted into the 110V DC voltages met the requirements；
Charge DC/DC circuits, accumulator, AC/DC circuits and DC/DC circuits is electrically connected, for controlling AC power
It charges to accumulator；
Discharge DC/DC circuits, accumulator and DC/DC circuits is electrically connected, for controlling battery discharging；
CPU is electrically connected accumulator, AC/DC circuits, DC/DC circuits, charging DC/DC circuits and electric discharge DC/DC electricity
Comprehensive monitoring and control are implemented in road for being run to straight-flow system.
The intelligent battery component also includes：Filter circuit is electrically connected DC/DC circuits and electric discharge DC/DC circuits,
For filtering out harmonic wave.
The DC monitoring system module further includes：
DC monitoring system connects DC bus；
Insulating monitor connects DC bus.
Feeder switch is installed on each Intelligent feeder line unit.
The utility model arranges straight-flow system using modularized distribution type nearby, and uses accumulator parallel connection side indirectly
Formula.Due to distribution arrange nearby, shorten load to DC feeder screen distance, accumulator it is used in parallel so that multistage is straight
Stream busbar avoids interfering with each other between loading, and to greatly reduce direct current cables usage amount, reduces D.C. isolation failure
Probability, multistage DC bus mutually supports, and improves the reliability of straight-flow system power supply.Full modularized design, reduces two
Secondary wiring, shortens delivery cycle, increases packing density, and realizes the maintenance of feeder switch on-line operation, avoids having a power failure and transport
Row is safeguarded.Accumulator indirectly be isolated entirely by the accumulator used in parallel that realizes, and monomer does not interfere with DC bus extremely, is not only restricted to
The quality of single-unit accumulator improves the reliability of system.
Description of the drawings
Fig. 1 is the structural schematic diagram of the straight-flow system of traditional substation in background technology.
Fig. 2 is a kind of structural schematic diagram of modularized distribution type batteries in parallel connection straight-flow system provided by the utility model.
Fig. 3 is single batteries in parallel connection assembly principle schematic diagram.
Specific implementation mode
Below according to Fig. 2 and Fig. 3, the preferred embodiment of the utility model is illustrated.
As shown in Fig. 2, the utility model provides a kind of modularized distribution type batteries in parallel connection straight-flow system, including：It is secondary to set
Standby room straight-flow system module 1 and 110kV and 10kV power distribution equipment straight-flow systems module 2, between the DC bus of the two modules
It is provided with bus connection switch 3, under normal circumstances, bus connection switch 3 disconnects, secondary device room straight-flow system module 1 and 110kV and 10kV
2 fanout operation of power distribution equipment straight-flow system module can pass through closure when a certain section of busbar overhaul or the damage of multiple module numbers
Bus connection switch 3, realize two sections of busbares between mutually support.
The secondary device room straight-flow system module 1 and 110kV and 10kV power distribution equipment straight-flow systems module 2 is all distinguished
Including：
The intelligent battery component 4 of multiple parallel connections, one end connect DC bus, and the other end connects Alternating Current Unit；
DC monitoring system module connects DC bus；
Intelligent feeder line unit 8 connects DC bus, feeder switch is equipped on each Intelligent feeder line unit 8.
Between a kind of modularized distribution type batteries in parallel connection straight-flow system join protection measure and control device provided by the utility model is pressed
It installs every dispersion, by main DC power load distributing in secondary device room, the rooms 110kV GIS and the switch gear rooms 10kV, considers flat on the spot
Face is arranged, each module group screen is installed on the spot.Due to distributed arrangement, shorten load to DC feeder screen distance,
Greatly reduce direct current cables usage amount.DC feeder cable length is reduced, and reduces the probability of D.C. isolation failure.Due to using
Full modularized design, reduces secondary connection, shortens delivery cycle, increases packing density, and realizes feeder switch and exist
Line operation and maintenance avoid power failure operation and maintenance.
The DC monitoring system module further includes：
DC monitoring system 5 connects DC bus, and comprehensive monitoring and control are carried out to straight-flow system and intelligent battery component
System；
Insulating monitor 6 connects DC bus, for monitoring the insulation resistance value of DC bus over the ground, monitoring direct current with
It is intact whether ground directly insulate.
The utility model uses the parallel connection intelligence of different number according to substation's deployment scenarios and DC load distribution situation
Battery component 4 forms multiple DC power supply subsystems, is dispersedly arranged in the concentrated area of each DC load, and carries out unified prison
Control.DC monitoring system, which runs straight-flow system, implements comprehensive monitoring and control, monitors battery tension, charge and discharge electricity in real time
Stream, automatic/hand control accumulator fills and floating charge, has overvoltage/undervoltage, excess temperature alarm and fault warning, by accumulator electricity
The accurate management of pressure, charging and discharging currents and battery temp compensation, it is ensured that battery-operated extends accumulator in optimum state
Service life.
As shown in figure 3, the intelligent battery component 4 includes：
Accumulator；
AC/DC circuits 402 are electrically connected DC/DC circuits 403 and charging DC/DC circuits 404, for exchanging 220V
Voltage is converted to DC voltage, on the one hand to charge the battery, on the other hand passes through boost conversion into DC110V；
DC/DC circuits 403 are electrically connected AC/DC circuits 402, charging DC/DC circuits 404 and electric discharge DC/DC circuits
405, for by AC220V ac voltage rectifiers at DC voltage boost, be converted into the 110V direct currents met the requirements
Pressure；
Charge DC/DC circuits 404, accumulator, AC/DC circuits 402 and DC/DC circuits 403 is electrically connected, for controlling
AC power charges to accumulator；
Discharge DC/DC circuits 405, accumulator and DC/DC circuits 403 is electrically connected, for controlling battery discharging；
CPU401 is electrically connected accumulator, AC/DC circuits 402, DC/DC circuits 403,404 and of charging DC/DC circuits
Discharge DC/DC circuits 405, implements comprehensive monitoring and control for being run to straight-flow system, monitors battery tension, charge and discharge in real time
Electric current, automatic/hand control accumulator fills and floating charge, has overvoltage/undervoltage, excess temperature alarm and fault warning, by electric power storage
The accurate management of cell voltage, charging and discharging currents and battery temp compensation, it is ensured that battery-operated extends electric power storage in optimum state
The service life in pond；
Filter circuit 406 is electrically connected DC/DC circuits 403 and electric discharge DC/DC circuits 405, for filtering out harmonic wave.
Intelligent battery component 4 uses indirect parallel way, by single accumulator and matched AC/DC charge circuits, DC/DC
Together, and by covering 4 parallel connection of intelligent battery component, composition meets the direct current of actual needs to the component combinations such as booster circuit more
Source system replaces " charging assembly+accumulator group+battery data logging device " device combination in traditional design.Intelligent battery component 4 selects
With the accumulator of 12V, considered by 2 hour discharge time, module output voltage is DC110V.
Intelligent battery component 4 in parallel can realize that on-bne repair is replaced indirectly, when normal operation, intelligence electricity in parallel indirectly
AC/DC charge circuits are carried to single battery floating charge, and by DC/DC boosting loop bands in the component of pond；Exchange dead electricity or AC/
DC charge circuit output voltages are less than in the case of single accumulator both end voltage, and single accumulator is uninterruptedly boosted by DC/DC
Loop band carries.
Single accumulator can also be realized to hold in line core and be tested.When indirect intelligent battery component 4 in parallel needs to carry out electric power storage
When pond core holds, the one intelligent battery component 4 into system of DC monitoring system 5 issues core and holds instruction, the smart circuit of the component
It controls it and switchs to storage battery power supply state, and dynamic regulation realizes accumulator with 0.1C constant-current discharges, while tired note accumulator is put
Capacitance is until core appearance finishes, and switchs to Alternating Current Power Supply state automatically, to charge the battery.It is automatic after the accumulator charging complete
The core for starting another intelligent battery component 4 holds.Hold the battery that can note abnormalities in advance in line core, promotes working efficiency.
The utility model, which is mainly used in, requires power supply reliability relatively high substation, can also apply any need
The power supply occasion of DC power supply and battery back up.Mainly has the following advantages：
1, accumulator is indirectly used in parallel：It is indirectly used in parallel by accumulator, realize that accumulator is isolated entirely, monomer is abnormal
DC bus is not interfered with, the reliability of system is improved, is not only restricted to the quality of single-unit accumulator.
2, straight-flow system distributed arrangement：It realizes that straight-flow system distribution is arranged nearby, reduces the usage amount of direct current cables,
Reduce the influence of a construction cost and Insulation Problems to system operation.
3, system power supply reliability is improved：By the used in parallel of accumulator, multistage DC bus avoids between load
It interferes with each other, reduces the use of DC feeder cable, multistage DC bus is mutually supported, and the reliable of straight-flow system power supply is improved
Degree.
4, indirect batteries in parallel connection component can realize that on-bne repair is replaced, and the on-line automatic full capacity 0.1C verifications property of accumulator is put
Electricity, core hold data backstage upload, support USB flash disk export, reduce the workload of maintenance personnel.
5, after using distributed batteries in parallel connection, single accumulator capacity is reduced to 200Ah hereinafter, can cancel setting individually
Battery room improves reliability.
Although the content of the utility model is discussed in detail by above preferred embodiment, but it should be appreciated that on
The description stated is not considered as limitations of the present invention.After those skilled in the art have read the above, for
A variety of modifications and substitutions of the utility model all will be apparent.Therefore, the scope of protection of the utility model should be by appended
Claim limit.
Claims (5)
1. a kind of modularized distribution type batteries in parallel connection straight-flow system, which is characterized in that include：Secondary device room straight-flow system module
（1）With 110kV and 10kV power distribution equipment straight-flow system modules（2）, secondary device room straight-flow system module（1）With 110kV and
10kV power distribution equipment straight-flow system modules（2）DC bus between be provided with bus connection switch（3）；
The secondary device room straight-flow system module（1）With 110kV and 10kV power distribution equipment straight-flow system modules（2）All distinguish
Including：
The intelligent battery component of multiple parallel connections（4）, one end connection DC bus, other end connection Alternating Current Unit；
DC monitoring system module connects DC bus；
Intelligent feeder line unit（8）, connect DC bus.
2. modularized distribution type batteries in parallel connection straight-flow system as described in claim 1, which is characterized in that the intelligent battery
Component（4）Including：
Accumulator；
AC/DC circuits（402）, it is electrically connected DC/DC circuits（403）With charging DC/DC circuits（404）, for 220V to be handed over
Galvanic electricity pressure is converted to DC voltage, on the one hand to charge the battery, on the other hand passes through boost conversion into DC110V；
DC/DC circuits（403）, it is electrically connected AC/DC circuits（402）, charging DC/DC circuits（404）With electric discharge DC/DC circuits
（405）, for by AC220V ac voltage rectifiers at DC voltage boost, be converted into the 110V direct currents met the requirements
Pressure；
Charge DC/DC circuits（404）, it is electrically connected accumulator, AC/DC circuits（402）With DC/DC circuits（403）, for controlling
AC power processed charges to accumulator；
Discharge DC/DC circuits（405）, it is electrically connected accumulator and DC/DC circuits（403）, for controlling battery discharging；
CPU（401）, it is electrically connected accumulator, AC/DC circuits（402）, DC/DC circuits（403）, charging DC/DC circuits
（404）With electric discharge DC/DC circuits（405）, implement comprehensive monitoring and control for being run to straight-flow system.
3. modularized distribution type batteries in parallel connection straight-flow system as claimed in claim 2, which is characterized in that the intelligent battery
Component（4）Also include：Filter circuit（406）, it is electrically connected DC/DC circuits（403）With electric discharge DC/DC circuits（405）, it is used for
Filter out harmonic wave.
4. modularized distribution type batteries in parallel connection straight-flow system as claimed in claim 3, which is characterized in that the direct-current supervision
System module further includes：
DC monitoring system（5）, connect DC bus；
Insulating monitor（6）, connect DC bus.
5. modularized distribution type batteries in parallel connection straight-flow system as claimed in claim 4, which is characterized in that each Intelligent feeder line list
Member（8）On feeder switch is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721733084.5U CN207743761U (en) | 2017-12-13 | 2017-12-13 | A kind of modularized distribution type batteries in parallel connection straight-flow system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721733084.5U CN207743761U (en) | 2017-12-13 | 2017-12-13 | A kind of modularized distribution type batteries in parallel connection straight-flow system |
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| CN207743761U true CN207743761U (en) | 2018-08-17 |
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| CN201721733084.5U Active CN207743761U (en) | 2017-12-13 | 2017-12-13 | A kind of modularized distribution type batteries in parallel connection straight-flow system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107846075A (en) * | 2017-12-13 | 2018-03-27 | 国网上海市电力公司 | A kind of modularized distribution type batteries in parallel connection straight-flow system |
| CN112769193A (en) * | 2021-01-28 | 2021-05-07 | 杭州高特电子设备股份有限公司 | Storage battery pack capacity online protection system and online protection method thereof |
-
2017
- 2017-12-13 CN CN201721733084.5U patent/CN207743761U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107846075A (en) * | 2017-12-13 | 2018-03-27 | 国网上海市电力公司 | A kind of modularized distribution type batteries in parallel connection straight-flow system |
| CN112769193A (en) * | 2021-01-28 | 2021-05-07 | 杭州高特电子设备股份有限公司 | Storage battery pack capacity online protection system and online protection method thereof |
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