CN105811442B - A kind of electrification access device of Mobile energy storage system grid connection 10kV route - Google Patents
A kind of electrification access device of Mobile energy storage system grid connection 10kV route Download PDFInfo
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- CN105811442B CN105811442B CN201510581177.XA CN201510581177A CN105811442B CN 105811442 B CN105811442 B CN 105811442B CN 201510581177 A CN201510581177 A CN 201510581177A CN 105811442 B CN105811442 B CN 105811442B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 91
- 230000002457 bidirectional Effects 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 5
- 239000002253 acid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000994 depressed Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
Abstract
The present invention relates to Mobile energy storage systems technology fields, refer in particular to a kind of electrification cut-in method of Mobile energy storage system grid connection 10kV route, 10kV route energy-storage system access point is provided with energy-storage system electrification access device, energy-storage system charges in access device series connection access 10kV route, energy-storage system charges access device by the vacuum circuit breaker with disconnecting switch, disconnecting switch, step transformer, high-tension switch cabinet, voltage transformer, the composition such as current transformer and arrester, vacuum circuit breaker with disconnecting switch is equipped with disconnecting switch, step transformer, high-tension switch cabinet, voltage transformer, current transformer, arrester and energy-storage system combination settings.The present invention effectively realizes access of the Mobile energy storage system under 10kV route not power-off condition and exits.
Description
Technical field
The present invention relates to Mobile energy storage systems technology field, a kind of Mobile energy storage system grid connection 10kV route is refered in particular to
Charge access device.
Background technique
In recent years, with the rapid development of our country's economy, to the power supply capacity and power supply quality of rural power grids and urban power distribution network
Propose increasingly higher demands.It especially returns to one's native place in festivals or holidays rural migrant worker's scale and irrigation season, rural power load surges, shape
At peakload, regional area, local period is caused the phenomenon of power supply capacity deficiency occur；And in other periods, power grid electricity consumption
Only general lighting electricity consumption, transformer almost idle running, power load peak-valley difference is away from big, and power load rate is low, electric grid investment
Inefficiencies.To improve power supply capacity when rural power grids and urban power distribution network peakload, while improving the utilization rate of electric power resource
And returns of investment, Mobile energy storage system can become crucial one of support technology.
Mobile energy storage system layout is flexible, it may be convenient to which being transported to needs place to be used, matches in rural power grids and city
It discharges when peak load of grid operation, charge operation when low ebb load is realized to rural power grids and urban power distribution network active reactive power
Effective support.
The patent document of China Patent No. 201220494193.7 discloses a kind of energy storage access system, is used for multiple energy storage
Energy conversion between battery and power grid, but the energy-storage system only accesses 0.4kV distribution network system, does not account for access 10kV
Rural power grids and urban power distribution network system, the band for also not accounting for energy-storage system are electrically accessed.
The patent document of China Patent No. 201510002368.6 provides energy storage device in the access of 0.4kV distribution net side
Mode realizes the guarantor's power supply and seaonal load application of high reliability, but the energy storage device only accesses 0.4kV power distribution network system
System, does not account for access 10kV rural power grids and urban power distribution network system, the band for also not accounting for energy storage device are electrically accessed.
The patent document of China Patent No. 201410253870.X discloses a kind of box energy storage substation structure, including even
The High-voltage Incoming Cabinet for connecing high-voltage fence is delivered to low pressure through transformer, metering cabinet by the high-tension current that High-voltage Incoming Cabinet exports and matches
Electric cabinet is equipped with accumulation chamber between the metering cabinet and low-voltage distribution cabinet, but the invention does not account for energy storage device band and is electrically accessed
10kV rural power grids and urban power distribution network system.
Summary of the invention
In view of the above problems, the present invention provides a kind of bands of Mobile energy storage system grid connection 10kV route to be electrically accessed dress
It sets, realizes plug and play of the Mobile energy storage system under 10kV route not power-off condition.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of electrification access device of Mobile energy storage system grid connection 10kV route, in 10kV route energy-storage system access point
It is provided with energy-storage system electrification access device, energy-storage system charges in access device series connection access 10kV route, energy-storage system band
Device is electrically accessed by the vacuum circuit breaker with disconnecting switch, disconnecting switch, step transformer, high-tension switch cabinet, mutual induction of voltage
The composition such as device, current transformer and arrester, the vacuum circuit breaker with disconnecting switch are equipped with disconnecting switch, the liter
Step-down transformer, high-tension switch cabinet, voltage transformer, current transformer, arrester and energy-storage system combination settings.
Furthermore, the vacuum circuit breaker with disconnecting switch includes the first vacuum circuit breaker and the second vacuum circuit breaker
Device, the first vacuum circuit breaker are connected on the bus bar side and load side of 10kV route, and the second vacuum circuit breaker is connected on 10kV route
Bus bar side, disconnecting switch are connected on 10kV line load side.Using such structure setting, pass through breaker and disconnecting switch
Combinative movement is realized access of the Mobile energy storage system under 10kV route not power-off condition and is exited.
Furthermore, second vacuum circuit breaker is connected to arrester and current transformer, and disconnecting switch is connected to
Voltage transformer, current transformer and voltage transformer are connected to high-tension switch cabinet, and high-tension switch cabinet is connected to buck
Transformer, step transformer are connected to energy-storage system.Using such structure setting, realize that the electrification of grid-connected 10kV route connects
Enter and exits.
Furthermore, the energy-storage system is made of energy-storage battery, energy storage bidirectional converter, energy storage monitoring device.By
In energy-storage system flexible layout, it may be convenient to be transported to energy-storage system access point, wherein energy-storage battery includes but is not limited to lead
Acid accumulator, lithium battery, flow battery and supercapacitor etc..
The invention has the advantages that:
The present invention charges access device by the way that energy-storage system is arranged in energy-storage system access point, realizes Mobile energy storage system
Plug and play under 10kV route not power-off condition avoids line outage bring economic loss, gives full play to movable type
Energy-storage system power capacity is adjustable, the advantage of system effectiveness and flexible layout, solves rural power grids and urban power distribution network end
Peakload and seaonal load difference problem, improve the power supply capacity and reliability of rural power grids and urban power distribution network.
Detailed description of the invention
Fig. 1 is the schematic diagram of electrification access device of the present invention；
Fig. 2 is the schematic diagram of energy-storage system of the present invention.
QF1, the first vacuum circuit breaker；QF2, the second vacuum circuit breaker；QS1, disconnecting switch；F1, arrester；PT, voltage
Mutual inductor；CT, current transformer.
Specific embodiment
Technical solution of the present invention is illustrated with embodiment with reference to the accompanying drawing.
As shown in Figure 1, a kind of electrification access device of Mobile energy storage system grid connection 10kV route of the present invention,
10kV route energy-storage system access point is provided with energy-storage system electrification access device, and energy-storage system charges access device series connection access
In 10kV route, energy-storage system charges access device by the vacuum circuit breaker with disconnecting switch, disconnecting switch QS1, lifting buckling
The composition such as depressor, high-tension switch cabinet, voltage transformer pt, Current Transmit and arrester F1, it is described with disconnecting switch
Vacuum circuit breaker is equipped with disconnecting switch QS1, the step transformer, high-tension switch cabinet, voltage transformer pt, electric current
Mutual inductor CT, arrester F1 and energy-storage system combination settings.
Above to constitute basic structure of the present invention, wherein step transformer is used for power grid 10kV voltage and energy storage Bidirectional variable-flow
Device exports the conversion of 380V voltage, and high-tension switch cabinet realizes that energy-storage system accesses 10kV high-tension line, voltage transformer pt and electricity
Current transformer CT measures the voltage and current at energy-storage system access 10kV route respectively, in the input side of Mobile energy storage system
Configuring an arrester F1 avoids energy-storage system by thunder disaster.
More specifically, the vacuum circuit breaker with disconnecting switch includes the first vacuum circuit breaker QF1 and the second vacuum
Circuit breaker Q F2, the first vacuum circuit breaker QF1 are connected on the bus bar side and load side of 10kV route, the second vacuum circuit breaker QF2 string
It is associated in 10kV line bus side, disconnecting switch QS1 is connected on 10kV line load side.Using such structure setting, by disconnected
Road device and the combinative movement of disconnecting switch are realized access of the Mobile energy storage system under 10kV route not power-off condition and are exited.
More specifically, the second vacuum circuit breaker QF2 is connected to arrester F1 and Current Transmit, disconnecting switch
QS1 is connected to voltage transformer pt, and Current Transmit and voltage transformer pt are connected to high-tension switch cabinet, the high pressure
Switchgear is connected to step transformer, and the step transformer is connected to energy-storage system.It is real using such structure setting
The band of existing grid-connected 10kV route is electrically accessed and exits.
When Mobile energy storage system access 10kV route, circuit breaker Q F1 is in coincidence at this time, circuit breaker Q F2 and keeps apart
It closes QS1 and is in quartile.Mobile energy storage system side is connected into circuit breaker Q F2, other side connection according to the phase sequence of 10kV route
Disconnecting switch QS1 successively closes disconnecting switch QS1 and circuit breaker Q F2, is then turned off circuit breaker Q F1, and mobile storage can be realized
Energy system, which does not have a power failure, accesses 10kV route.
When Mobile energy storage system exits 10kV route, circuit breaker Q F1 is in quartile at this time, circuit breaker Q F2 and keeps apart
It closes QS1 and is in coincidence.After energy-storage system is out of service, circuit breaker Q F1 is closed, successively cut-off breaker QF2 and disconnecting switch
QS1 disconnects the connecting cable of Mobile energy storage system and circuit breaker Q F2 and disconnecting switch QS1, Mobile energy storage system can be realized
System, which does not have a power failure, exits 10kV route.
More specifically, as shown in Fig. 2, heretofore described energy-storage system is by energy-storage battery, energy storage bidirectional converter, storage
It can monitoring device composition.Wherein energy-storage battery includes but is not limited to lead-acid accumulator, lithium battery, flow battery and supercapacitor
Deng the power and capacity of energy-storage battery configure as needed；Energy storage bidirectional converter realizes energy-storage battery DC voltage and power grid
The two-way changing of alternating voltage；On the one hand energy storage monitoring device monitors the operating status of energy-storage battery and energy storage bidirectional converter,
Ensure energy-storage system safe and reliable operation, on the other hand receive the instruction of dispatching of power netwoks department, energy storage is controlled according to power curve
The charge and discharge electricity operation of battery.
Mobile energy storage system has charge and discharge control function on the spot, is provided simultaneously with distant place control function, according to power grid tune
The power curve control energy-storage system of degree department is filled in rural power grids and the electric discharge operation of urban power distribution network peak hours, low ebb load
Electricity operation realizes " peak load shifting " of load.
The above are the preferable embodiments of the present invention, and those skilled in the art in the invention can also be to above embodiment
It changes and modifies.Therefore, the invention is not limited to above-mentioned specific embodiments, and all those skilled in the art are at this
Made any conspicuous improvement, replacement or modification all belong to the scope of protection of the present invention on the basis of invention.
Claims (3)
1. a kind of electrification access device of Mobile energy storage system grid connection 10kV route, it is characterised in that: in 10kV route energy storage
System access point is provided with energy-storage system electrification access device, the energy-storage system electrification access device series connection access 10kV route
In, the energy-storage system electrification access device is by the vacuum circuit breaker with disconnecting switch, disconnecting switch, step transformer, height
Compress switch cabinet, voltage transformer, current transformer and arrester composition, the vacuum circuit breaker with disconnecting switch be isolated
Switch is equipped with, the step transformer, high-tension switch cabinet, voltage transformer, current transformer, arrester and energy storage system
System combination settings；
The vacuum circuit breaker with disconnecting switch includes the first vacuum circuit breaker and the second vacuum circuit breaker, first vacuum
Breaker is connected between the bus bar side and load side of 10kV route, and second vacuum circuit breaker is connected on 10kV line bus
Side, the disconnecting switch are connected on 10kV line load side.
2. a kind of electrification access device of Mobile energy storage system grid connection 10kV route, feature exist according to claim 1
In: second vacuum circuit breaker is connected to arrester and current transformer, the isolation for being connected on 10kV line load side
Switch is connected to voltage transformer, and the current transformer and voltage transformer are connected to high-tension switch cabinet, the high pressure
Switchgear is connected to step transformer, and the step transformer is connected to energy-storage system.
3. a kind of electrification access device of Mobile energy storage system grid connection 10kV route, feature exist according to claim 1
In: the energy-storage system is made of energy-storage battery, energy storage bidirectional converter, energy storage monitoring device.
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| CN108206531A (en) * | 2017-12-28 | 2018-06-26 | 深圳市科陆电子科技股份有限公司 | Circuit and middle buckling stream case applied to energy storage frequency modulation system |
| CN110401213A (en) * | 2019-06-26 | 2019-11-01 | 中国电力科学研究院有限公司 | A kind of multi-mode movable energy storage system and its control method |
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