CN108448590A - A kind of device, method and system for inhibiting shunt capacitor inrush phenomenon - Google Patents
A kind of device, method and system for inhibiting shunt capacitor inrush phenomenon Download PDFInfo
- Publication number
- CN108448590A CN108448590A CN201810320871.XA CN201810320871A CN108448590A CN 108448590 A CN108448590 A CN 108448590A CN 201810320871 A CN201810320871 A CN 201810320871A CN 108448590 A CN108448590 A CN 108448590A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- capacitor group
- distribution network
- inhibiting
- power distribution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 221
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000009826 distribution Methods 0.000 claims abstract description 73
- 238000007600 charging Methods 0.000 claims abstract description 71
- 230000007935 neutral effect Effects 0.000 claims abstract description 6
- 230000015654 memory Effects 0.000 claims description 19
- 238000003860 storage Methods 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 abstract description 8
- 230000001052 transient effect Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 102100024841 Protein BRICK1 Human genes 0.000 description 2
- 101710084314 Protein BRICK1 Proteins 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
It is a kind of for inhibiting the device, method and system of shunt capacitor inrush phenomenon, wherein described for inhibiting the device of shunt capacitor inrush phenomenon to include：Multiple capacitor groups in parallel, each capacitor group side are connect with one phase AC power of power distribution network, and the other side is connected by neutral point, further includes：Charging module, it is in parallel at least one capacitor group, for the capacitor group charging for connection, existing distribution network var compensation device is solved in input, the inrush phenomenon of generation increases the problem of probability of repeated breakdown occurs when cut-offfing for breaker, extends the service life of reactive power compensator.
Description
Technical field
The present invention relates to power domains, and in particular to a kind of device, method for inhibiting shunt capacitor inrush phenomenon
And system.
Background technology
In order to improve the power factor of power grid, improve power quality, existing power distribution network can all connect reactive power compensator,
Middle shunt capacitor, due to its have many advantages, such as it is at low cost, be easily installed and safeguard, become in current electric system and answered
With one of most commonly used reactive power compensator.
But transition effect of existing shunt capacitor during carrying out reactive-load compensation input can lead to inrush phenomenon, so-called
The generation of inrush phenomenon is to be currently used for the capacitor group of reactive-load compensation to be in uncharged state, and closing a floodgate, moment flows through capacitor
Electric current is only limited by its impedance loop, and the impedance in circuit at this time is minimum, and therefore, generated inrush phenomenon theoretically will
Greatly, when inrush phenomenon is serious, it will cause the breaker structure for putting into shunt capacitor undermined, then increase open circuit
The probability of repeated breakdown occurs when cut-offfing for device, while can also damage capacitor group insulation assembly, influences its service life.
Invention content
Therefore, technical problems to be solved of the embodiment of the present invention are existing distribution network var compensation device in input,
The inrush phenomenon of generation increases breaker and the probability of repeated breakdown occurs when cut-offfing, while influencing reactive power compensator and using the longevity
Life.
In view of this, according in a first aspect, an embodiment of the present invention provides one kind for inhibiting shunt capacitor combined floodgate to gush
The device of stream, including：Multiple capacitor groups in parallel, each capacitor group side connect with one phase AC power of power distribution network
It connects, the other side is connected by neutral point, further includes：Charging module, it is in parallel at least one capacitor group, for being connection
The capacitor group charging.
Preferably, the charging module is connect by switch module with the capacitor group, for cutting off/connecting described fill
Electric module.
Preferably, the capacitor group includes one or more capacitors.
Preferably, series connection and/or parallel connection between the multiple capacitor.
According to second aspect, an embodiment of the present invention provides a kind of method for inhibiting shunt capacitor inrush phenomenon,
It is described for inhibiting shunt capacitor to close a floodgate applied to the power distribution network for including the device for inhibiting shunt capacitor inrush phenomenon
The device to shove includes capacitor group and charging module, and the capacitor group accesses the power distribution network by switching device, is used for
Reactive-load compensation is provided for the power distribution network, the charging module is in parallel at least one capacitor group, the method includes：
Judge whether to be connected to the control of reactive power compensating instruction；When being connected to the reactive-load compensation instruction, the charging module pair and its are controlled
The capacitor group of connection charges, until the capacitor group both end voltage reaches preset voltage value, terminates charging, and
Cut off the connection of charging module and the capacitor group；Whether judge the power distribution network ac phase voltage being connect with the capacitor group
Meet preset condition；When the power distribution network ac phase voltage meets the preset condition, switching device input institute is controlled
State the capacitor group for reactive-load compensation.
Preferably, described after being connected to reactive-load compensation instruction, the charging module is controlled to the capacitance connected to it
Device group charges, until the capacitor group both end voltage reaches the preset voltage value, terminates charging, and cut off charging mould
In the step of block and the connection of the capacitor group, the preset voltage value is determined by following formula：
Wherein, UPFor capacitor group preset voltage value；U is the power distribution network ac phase voltage being connect with the capacitor group.
Preferably, described to judge whether the power distribution network ac phase voltage being connect with the capacitor group meets preset condition
Step, including：
Judge the phase angle for the power distribution network ac phase voltage being connect with the capacitor groupWhether 90 ° are equal to,
Wherein, ω is alternating voltage angular frequency；T is the moment；For phase.
According to the third aspect, an embodiment of the present invention provides a kind of device for inhibiting shunt capacitor inrush phenomenon,
It is described for inhibiting shunt capacitor to close a floodgate applied to the power distribution network for including the device for inhibiting shunt capacitor inrush phenomenon
The device to shove includes capacitor group and charging module, and the capacitor group accesses the power distribution network by switching device, is used for
Reactive-load compensation is provided for the power distribution network, the charging module is in parallel at least one capacitor group, and described device includes：
First judgment module receives the control of reactive power compensating instruction for judging whether；First control module is connected to the nothing for working as
It when work(compensating instruction, controls the charging module and charges to the capacitor group connected to it, until the capacitor
Group both end voltage reaches preset voltage value, terminates charging, and cut off the connection of charging module and the capacitor group；Second judges
Module, for judging whether the power distribution network ac phase voltage being connect with the capacitor group meets preset condition；Second control mould
Block is used for for when the power distribution network ac phase voltage meets the preset condition, controlling described in the switching device input
The capacitor group of reactive-load compensation.
According to fourth aspect, an embodiment of the present invention provides a kind of system for inhibiting shunt capacitor inrush phenomenon,
Including：
The device for inhibiting shunt capacitor inrush phenomenon described in above-mentioned first aspect, passes through switching device and distribution
Net connection, the switching device are used for into the power distribution network described in input/excision for inhibiting shunt capacitor inrush phenomenon
Device；
Voltage collecting device, respectively with a phase AC power in the power distribution network, described for inhibiting shunt capacitor to close
The connection of device that lock shoves, phase voltage for acquiring the AC power and described for inhibiting shunt capacitor inrush phenomenon
Device voltage value；
Controller, respectively with the voltage collecting device, it is described for inhibit shunt capacitor inrush phenomenon device and
The switching device connection, including processor and memory, the processor are connect with the memory, wherein the storage
Device is stored with the instruction that can be executed by the processor, is used to inhibit described in above-mentioned second aspect so that the processor executes
The method of shunt capacitor inrush phenomenon.
According to the 5th aspect, an embodiment of the present invention provides a kind of computer readable storage mediums, are stored thereon with calculating
Machine program, the computer program is realized when being executed by processor described in above-mentioned second aspect to be used to that shunt capacitor to be inhibited to close
The method that lock shoves.
Device, method and system provided in an embodiment of the present invention for inhibiting shunt capacitor inrush phenomenon, by filling
Electric module be attached thereto capacitor group charging, when capacitor group carry out reactive-load compensation during, the capacitor group of electrification with
The voltage difference of power distribution network is smaller or equal to zero, reduces capacitor group and carries out inrush phenomenon during reactive-load compensation input
Value reduces the damage to the structure for putting into shunt capacitor, reduces the switching devices such as breaker and weight occurs when cut-offfing
Breakdown probability and damage to capacitor group itself, extend the service life of capacitor group.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of for inhibiting the structure of the device of shunt capacitor inrush phenomenon to show of the offer of the embodiment of the present invention 1
It is intended to；
Fig. 2 is a kind of flow chart for method for inhibiting shunt capacitor inrush phenomenon that the embodiment of the present invention 2 provides；
Fig. 3 is a kind of for inhibiting the structure of the device of shunt capacitor inrush phenomenon to show of the offer of the embodiment of the present invention 3
It is intended to；
Fig. 4 is a kind of for inhibiting the structure of the system of shunt capacitor inrush phenomenon to show of the offer of the embodiment of the present invention 4
It is intended to.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment 1
The embodiment of the present invention 1 provides a kind of device for inhibiting shunt capacitor inrush phenomenon, as shown in Figure 1, including：
Multiple capacitor groups 1 in parallel, each described side capacitor group C1 or C2 or C3 2 is exchanged with one phase of power distribution network
Power supply connect, the other side by neutral point be connected, which can be directly grounded connection, can not also grounding connection,
In one specific embodiment of invention, each capacitor group C1 or C2 or C3 may include one or more capacitors, due to
Capacitor group is that the impedance of power distribution network AC power is offset by the capacitive reactance of capacitor in the essence for carrying out reactive-load compensation, therefore every
The quantity of capacitor can be determined according to power distribution network alternating voltage size and/or capacitor own specifications in one capacitor group,
And when capacitor group includes multiple capacitors, series connection may be used in multiple capacitors and/or the mode of parallel connection is idle to meet
The needs of compensation；CN is neutral point stray capacitance 5, the equivalent capacity which forms between capacitor group in wherein Fig. 1.
This further includes for inhibiting the device of shunt capacitor inrush phenomenon：Charging module 3, at least one capacitance
Device group is in parallel, for the capacitor group charging for connection.In one particular embodiment of the present invention, which can
Stable DC high voltage is exported, can be independently of except power distribution network, the charging module being separately provided, for original distribution
Cable line structure need not make any change, while the size of the charging module can be according to the convenience needs of transport and installation
Setting.
Device provided in an embodiment of the present invention for inhibiting shunt capacitor inrush phenomenon is therewith by charging module
The capacitor group of connection charges, during capacitor group carries out reactive-load compensation, the capacitor group of electrification and the voltage of power distribution network
Difference it is smaller or be equal to zero, reduce capacitor group carry out reactive-load compensation input during inrush phenomenon value, reduce to
In the damage of the structure of input shunt capacitor, reduce the switching devices such as breaker occur when cut-offfing repeated breakdown probability and
Damage to capacitor group itself extends the service life of capacitor group.
In some alternative embodiments of the present invention, the charging module 3 passes through switch module 4 and the capacitor group 1
Connection, for cutting off/connecting the charging module 3.The input that charging module is realized by the way that switch module is arranged, when capacitor group
Voltage meet the requirements after, you can by switch module cut off charging module, which can be any achievable switching
The device of function.
Embodiment 2
The embodiment of the present invention 2 provide it is a kind of for inhibiting the method for shunt capacitor inrush phenomenon, be applied to comprising for
Inhibit the power distribution network of the device of shunt capacitor inrush phenomenon, it is described for inhibiting the device of shunt capacitor inrush phenomenon to include
Capacitor group and charging module, the capacitor group access the power distribution network by switching device, for being carried for the power distribution network
For reactive-load compensation, the charging module is in parallel at least one capacitor group, as shown in Fig. 2, the method includes：
S21 judges whether to be connected to the control of reactive power compensating instruction, when being connected to the reactive-load compensation instruction, executes step
S22.In the specific embodiment of the present invention, the control of reactive power compensating instruction can be by the control mould of external power system
Block is sent out, and is dealt into the instruction by wire communication and/or wireless telecommunications and is arranged in distribution net side or for inhibiting shunt capacitance
The control module of device inrush phenomenon device side.
S22 controls the charging module and charges to the capacitor group connected to it, until the capacitor group
Both end voltage reaches preset voltage value, terminates charging, and cut off the connection of charging module and the capacitor group；The present invention's
In one specific embodiment, the size of the preset voltage value can be determined according to the voltage value of power distribution network AC power, due to matching
Power grid is to connect device for improving reactive-load compensation by switching device, when the use of charging module being the capacitor being attached thereto
When group charging, with the increase of the voltage of capacitor group, the potential difference between capacitor group and power distribution network will reduce, for throwing
The both end voltage of the switching device of cut distribution reactive compensator of electrical network can reduce, and provide the device of reactive-load compensation in input, close
Lock, which shoves, reduces or is equal to zero；When inrush phenomenon is equal to zero, switching device and reactive power compensator will not be made naturally
At damage, at the same can also according to the electric current safe class of the switching device and/or the device of the offer reactive-load compensation itself,
Under conditions of permission, the voltage of capacitor group need not be charged to the voltage of power distribution network, only ensure distribution net side with
The current value that the potential difference of the device side of reactive-load compensation is formed in circuit is provided, device and the throwing that reactive-load compensation is provided are met
Cutting apparatus safe handling demand can both improve the charge efficiency of the device to providing reactive-load compensation, can also save in this way
The about electric energy of charging module.
S23, judges whether the power distribution network ac phase voltage being connect with the capacitor group meets preset condition, matches when described
When power grid ac phase voltage meets the preset condition, step S24 is executed.In the specific embodiment of the present invention,
The preset condition can be with the voltage of phase voltage itself and/or the phase angle of phase voltage.
S24 controls the switching device input capacitor group for being used for reactive-load compensation.
Method provided in an embodiment of the present invention for inhibiting shunt capacitor inrush phenomenon is therewith by charging module
The capacitor group of connection charges, during capacitor group carries out reactive-load compensation, the capacitor group of electrification and the voltage of power distribution network
Difference it is smaller or be equal to zero, reduce capacitor group carry out reactive-load compensation input during inrush phenomenon value, reduce to
In the damage of the structure of input shunt capacitor, reduce the switching devices such as breaker occur when cut-offfing repeated breakdown probability and
Damage to capacitor group itself extends the service life of capacitor group.
It is described after being connected to reactive-load compensation instruction in some alternative embodiments of the present invention, control the charging module
It charges to the capacitor group connected to it, until the capacitor group both end voltage reaches the preset voltage value,
Terminate charging, and in the step of cutting off connection of the charging module with the capacitor group, the preset voltage value is determined by following formula：
Wherein, UPFor capacitor group preset voltage value；U is the power distribution network ac phase voltage being connect with the capacitor group.
It is described to judge the power distribution network being connect with capacitor group exchange mutually electricity in some alternative embodiments of the present invention
The step of whether pressure meets preset condition, including：Judge the phase for the power distribution network ac phase voltage being connect with the capacitor group
AngleWhether 90 ° are equal to, wherein ω is alternating voltage angular frequency；T is the moment；For phase.
Specifically, above-mentioned preset voltage value and preset condition can according to obtaining described below, as shown in figure 4, UA in figure,
UB, UC are power distribution network three-phase alternating-current supply voltage, and BRK1, BRK2, BRK3 are switching device, and the AC power of the power distribution network is three
It is mutually earth-free or or compensated distribution network, the capacitor reactive compensation side mode of connection be the star-like neutral point of three-phase do not connect
Ground, the embodiment of the present invention is for giving the corresponding capacitor C1 of A, right if Up is in advance to the voltage value of A phase capacitors charging
The phase voltage for the distribution network source answered is U, before threephase switch combined floodgate, suddenly to the circuits AB, the circuits BC, the circuits the CA Kiels Lie Xie
Husband's voltage equation obtains following formula (1)：
It is collated, obtain formula (2)：
If three-phase voltage is positive phase sequence, ifThen each line voltage can be expressed as formula (3)：
It is preferred that charging to A phase capacitors so that in three-phase closing moment A, B, C three-phase breaker BRK1, BRK2, BRK3
Both end voltage is all 0, realizes that voltage zero-cross input obtains formula (4) to three-phase simultaneously：
After bringing (3) (4) two formula into (2) formula, formula (5) is calculated：
By analyzing above, it is phase voltage to be connected in parallel on the charge target that the chargings of single-phase electricity container both sides is not openedTimes,
At the time of switching device closing moment is that the supply voltage of charging phase is located at positive half-wave peak value.For example, in the medium-voltage distribution of 10kV
In net, phase voltage U isU can be obtained through above formula (5)PEqual to 12.24kV, after phase capacitor charging is to 12.24kV,When, i.e., when A phases supply voltage is positive half-wave peak value, three-phase, which closes a floodgate, puts into capacitor, can reach three at this time
Phase breaker both end voltage three-phase is 0 simultaneously, realizes that the inhibition of three-phase breaker input capacitor inrush phenomenon, the present invention are implemented
Example only so that it is that condition is solved that the voltage value of switching device both sides, which is zero, obtain the pre-charge voltage of charging module with
And the condition of the device for inhibiting shunt capacitor inrush phenomenon is put into, those skilled in the art can be according to foregoing description, can
The both sides voltage of switching device is set as other values according to actual use demand, then obtain charging module pre-charge voltage and
Put into the condition of the device for inhibiting shunt capacitor inrush phenomenon；Can also either other methods be used to make breaker
When the voltage at both ends is equal, the charging voltage and input of obtained capacitor group are for inhibiting shunt capacitor inrush phenomenon
The condition of device.
Embodiment 3
The embodiment of the present invention provides a kind of device for inhibiting shunt capacitor inrush phenomenon, applied to comprising for pressing down
The power distribution network of the device of shunt capacitor inrush phenomenon processed, the device for inhibiting shunt capacitor inrush phenomenon include electricity
Container group and charging module, the capacitor group access the power distribution network by switching device, for being provided for the power distribution network
Reactive-load compensation, the charging module is in parallel at least one capacitor group, as shown in figure 3, described device includes：
First judgment module 31 receives the control of reactive power compensating instruction for judging whether；
First control module 32, for when being connected to the reactive-load compensation instruction, controlling the charging module pair and connecting with it
The capacitor group connect charges, until the capacitor group both end voltage reaches preset voltage value, terminates charging, and cut
Except the connection of charging module and the capacitor group；
Second judgment module 33, for judging it is pre- whether the power distribution network ac phase voltage being connect with the capacitor group meets
If condition；
Second control module 34, for when the power distribution network ac phase voltage meets the preset condition, described in control
The switching device input capacitor group for being used for reactive-load compensation.
Device provided in an embodiment of the present invention for inhibiting shunt capacitor inrush phenomenon is therewith by charging module
The capacitor group of connection charges, during capacitor group carries out reactive-load compensation, the capacitor group of electrification and the voltage of power distribution network
Difference it is smaller or be equal to zero, reduce capacitor group carry out reactive-load compensation input during inrush phenomenon value, reduce to
In the damage of the structure of input shunt capacitor, reduce the switching devices such as breaker occur when cut-offfing repeated breakdown probability and
Damage to capacitor group itself extends the service life of capacitor group.
Embodiment 4
The embodiment of the present invention 4 provides a kind of system for inhibiting shunt capacitor inrush phenomenon, including：
Device described in embodiment 1 for inhibiting shunt capacitor inrush phenomenon is connected by switching device and power distribution network
It connects, the switching device is for the dress for inhibiting shunt capacitor inrush phenomenon described in input/excision into the power distribution network
It sets；
Voltage collecting device, respectively with a phase AC power in the power distribution network, described for inhibiting shunt capacitor to close
The connection of device that lock shoves, phase voltage for acquiring the AC power and described for inhibiting shunt capacitor inrush phenomenon
Device voltage value.In one particular embodiment of the present invention, which can be voltage sensor, work as institute
When stating in the device for inhibiting shunt capacitor inrush phenomenon comprising multiple capacitor groups, each capacitor group can be connected
Connect a voltage collecting device.
Controller, respectively with the voltage collecting device, it is described for inhibit shunt capacitor inrush phenomenon device and
The switching device connection, including processor and memory, the processor are connect with the memory, wherein the storage
Device is stored with the instruction that can be executed by the processor, so that the processor executes is used to inhibit in parallel described in embodiment 2
The method of capacitor inrush phenomenon.
Wherein, processor can be central processing unit (Central Processing Unit, CPU).Processor can be with
For other general processors, digital signal processor (Digital Signal Processor, DSP), application-specific integrated circuit
(Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
The combination of the chips such as discrete hardware components or above-mentioned all kinds of chips.General processor can be microprocessor or the processing
Device can also be any conventional processor etc..
Memory as a kind of non-transient computer readable storage medium, can be used for storing non-transient software program, it is non-temporarily
State computer executable program and module, such as the corresponding program instruction/module in 3 in the embodiment of the present application.Processor passes through
Non-transient software program, instruction and module stored in memory are run, to the various function application of execute server
And data processing, that is, realize above method embodiment.
Memory may include storing program area and storage data field, wherein storing program area can storage program area, extremely
A few required application program of function；Storage data field can be stored uses created data according to information processing unit
Deng.Can also include non-transient memory in addition, memory may include high-speed random access memory, for example, at least one
Disk memory, flush memory device or other non-transient solid-state memories.One or more of modules are stored in described
In memory, when being executed by one or more of processors, method as shown in Figure 2 is executed.
The said goods can perform the method that the embodiment of the present invention is provided, and has the corresponding function module of execution method and has
Beneficial effect.The not technical detail of detailed description in the present embodiment, for details, reference can be made to the correlations in embodiment as shown in Figure 2 to retouch
It states.
System provided in an embodiment of the present invention for inhibiting shunt capacitor inrush phenomenon is therewith by charging module
The capacitor group of connection charges, during capacitor group carries out reactive-load compensation, the capacitor group of electrification and the voltage of power distribution network
Difference it is smaller or be equal to zero, reduce capacitor group carry out reactive-load compensation input during inrush phenomenon value, reduce to
In the damage of the structure of input shunt capacitor, reduce the switching devices such as breaker occur when cut-offfing repeated breakdown probability and
Damage to capacitor group itself extends the service life of capacitor group.
Embodiment 5
The embodiment of the present invention 5 additionally provides a kind of non-transient computer storage medium, the computer storage media storage
There are computer executable instructions, which can perform the method in above-mentioned any means embodiment.Wherein, institute
It can be magnetic disc, CD, read-only memory (Read-Only Memory, ROM), random access memory to state storage medium
(Random Access Memory, RAM), flash memory (Flash Memory), hard disk (Hard Disk Drive, contracting
It writes：) or solid state disk (Solid-State Drive, SSD) etc. HDD；The storage medium can also include depositing for mentioned kind
The combination of reservoir.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of device for inhibiting shunt capacitor inrush phenomenon, including：
Multiple capacitor groups in parallel, each capacitor group side are connect with one phase AC power of power distribution network, the other side
It is connected by neutral point, which is characterized in that further include：
Charging module, it is in parallel at least one capacitor group, for the capacitor group charging for connection.
2. the apparatus according to claim 1, which is characterized in that the charging module passes through switch module and the capacitor
Group connection, for cutting off/connecting the charging module.
3. the apparatus according to claim 1, which is characterized in that the capacitor group includes one or more capacitors.
4. device according to claim 3, which is characterized in that series connection and/or parallel connection between the multiple capacitor.
5. a kind of method for inhibiting shunt capacitor inrush phenomenon, applied to comprising for inhibiting shunt capacitor combined floodgate to gush
The power distribution network of the device of stream, described for inhibiting the device of shunt capacitor inrush phenomenon includes capacitor group and charging module,
The capacitor group accesses the power distribution network by switching device, for providing reactive-load compensation, the charging for the power distribution network
Module is in parallel at least one capacitor group, which is characterized in that the method includes：
Judge whether to be connected to the control of reactive power compensating instruction；
When being connected to the reactive-load compensation instruction, controls the charging module and the capacitor group connected to it is filled
Electricity terminates charging, and cut off charging module and the capacitor until the capacitor group both end voltage reaches preset voltage value
The connection of group；
Judge whether the power distribution network ac phase voltage being connect with the capacitor group meets preset condition；
When the power distribution network ac phase voltage meets the preset condition, it is described for idle to control the switching device input
The capacitor group of compensation.
6. according to the method described in claim 5, it is characterized in that, described after being connected to reactive-load compensation instruction, fill described in control
Electric module charges to the capacitor group connected to it, until the capacitor group both end voltage reaches the default electricity
Pressure value terminates charging, and in the step of cutting off connection of the charging module with the capacitor group, the preset voltage value is by following formula
It determines：
Wherein, UPFor capacitor group preset voltage value；U is the power distribution network ac phase voltage being connect with the capacitor group.
7. according to the method described in claim 5, it is characterized in that, described judge that the power distribution network being connect with the capacitor group is handed over
The step of whether stream phase voltage meets preset condition, including：
Judge the phase angle for the power distribution network ac phase voltage being connect with the capacitor groupWhether 90 ° are equal to,
In, ω is alternating voltage angular frequency；T is the moment；For phase.
8. a kind of device for inhibiting shunt capacitor inrush phenomenon, applied to comprising for inhibiting shunt capacitor combined floodgate to gush
The power distribution network of the device of stream, described for inhibiting the device of shunt capacitor inrush phenomenon includes capacitor group and charging module,
The capacitor group accesses the power distribution network by switching device, for providing reactive-load compensation, the charging for the power distribution network
Module is in parallel at least one capacitor group, which is characterized in that described device includes：
First judgment module receives the control of reactive power compensating instruction for judging whether；
First control module, for when being connected to the reactive-load compensation instruction, controlling the charging module to institute connected to it
It states capacitor group to charge, until the capacitor group both end voltage reaches preset voltage value, terminates charging, and cut off charging
The connection of module and the capacitor group；
Second judgment module, for judging whether the power distribution network ac phase voltage being connect with the capacitor group meets default item
Part；
Second control module, for when the power distribution network ac phase voltage meets the preset condition, controlling the switching dress
Set the input capacitor group for being used for reactive-load compensation.
9. a kind of system for inhibiting shunt capacitor inrush phenomenon, which is characterized in that including：
Claim 1-4 any one of them is used to inhibit the device of shunt capacitor inrush phenomenon, by switching device with match
Power grid connects, and the switching device is used for into the power distribution network described in input/excision for inhibiting shunt capacitor combined floodgate to gush
The device of stream；
Voltage collecting device, respectively with a phase AC power in the power distribution network, described for inhibiting shunt capacitor combined floodgate to gush
The device of stream connects, the phase voltage for acquiring the AC power and the dress for inhibiting shunt capacitor inrush phenomenon
The voltage value set；
Controller, respectively with the voltage collecting device, described for inhibiting the device of shunt capacitor inrush phenomenon and described
Switching device connects, including processor and memory, the processor are connect with the memory, wherein the memory is deposited
The instruction that can be executed by the processor is contained, so that the processor perform claim requires to be used for described in any one of 5-7
Inhibit the method for shunt capacitor inrush phenomenon.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
The method for inhibiting shunt capacitor inrush phenomenon described in any one of claim 5-7 is realized when being executed by processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320871.XA CN108448590A (en) | 2018-04-11 | 2018-04-11 | A kind of device, method and system for inhibiting shunt capacitor inrush phenomenon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320871.XA CN108448590A (en) | 2018-04-11 | 2018-04-11 | A kind of device, method and system for inhibiting shunt capacitor inrush phenomenon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108448590A true CN108448590A (en) | 2018-08-24 |
Family
ID=63199213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810320871.XA Pending CN108448590A (en) | 2018-04-11 | 2018-04-11 | A kind of device, method and system for inhibiting shunt capacitor inrush phenomenon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108448590A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245116A (en) * | 2018-08-30 | 2019-01-18 | 全球能源互联网研究院有限公司 | A kind of power capacitor inrush phenomenon inhibition device and method |
| CN111478368A (en) * | 2020-05-13 | 2020-07-31 | 南方电网科学研究院有限责任公司 | Connection transformer switching method, system and equipment for hot standby connection transformer circuit |
| CN111864616A (en) * | 2020-06-22 | 2020-10-30 | 深圳供电局有限公司 | Display device control circuit and five-prevention locking system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035206A (en) * | 2010-12-20 | 2011-04-27 | 焦作市天创电控设备有限公司 | Dynamic filter reactive power compensation device for fan converter cabinet |
| CN202353224U (en) * | 2011-11-28 | 2012-07-25 | 吉林市龙华电力技术有限公司 | Low-voltage phased switching capacitor switch |
| CN102931669A (en) * | 2012-11-20 | 2013-02-13 | 北京馨容纵横科技发展有限公司 | Device for switching capacitor bank based on synchronous precharging switch |
| CN103337851A (en) * | 2013-07-04 | 2013-10-02 | 国家电网公司 | Semi-controlled active injection current high voltage direct current breaker and realization method thereof |
| CN104377705A (en) * | 2014-09-05 | 2015-02-25 | 山东理工大学 | Peak closing method for reactive compensation capacitor bank |
| CN208241321U (en) * | 2018-04-11 | 2018-12-14 | 全球能源互联网研究院有限公司 | It is a kind of for inhibiting the device and system of shunt capacitor inrush phenomenon |
-
2018
- 2018-04-11 CN CN201810320871.XA patent/CN108448590A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035206A (en) * | 2010-12-20 | 2011-04-27 | 焦作市天创电控设备有限公司 | Dynamic filter reactive power compensation device for fan converter cabinet |
| CN202353224U (en) * | 2011-11-28 | 2012-07-25 | 吉林市龙华电力技术有限公司 | Low-voltage phased switching capacitor switch |
| CN102931669A (en) * | 2012-11-20 | 2013-02-13 | 北京馨容纵横科技发展有限公司 | Device for switching capacitor bank based on synchronous precharging switch |
| CN103337851A (en) * | 2013-07-04 | 2013-10-02 | 国家电网公司 | Semi-controlled active injection current high voltage direct current breaker and realization method thereof |
| CN104377705A (en) * | 2014-09-05 | 2015-02-25 | 山东理工大学 | Peak closing method for reactive compensation capacitor bank |
| CN208241321U (en) * | 2018-04-11 | 2018-12-14 | 全球能源互联网研究院有限公司 | It is a kind of for inhibiting the device and system of shunt capacitor inrush phenomenon |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245116A (en) * | 2018-08-30 | 2019-01-18 | 全球能源互联网研究院有限公司 | A kind of power capacitor inrush phenomenon inhibition device and method |
| CN111478368A (en) * | 2020-05-13 | 2020-07-31 | 南方电网科学研究院有限责任公司 | Connection transformer switching method, system and equipment for hot standby connection transformer circuit |
| CN111864616A (en) * | 2020-06-22 | 2020-10-30 | 深圳供电局有限公司 | Display device control circuit and five-prevention locking system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108448590A (en) | A kind of device, method and system for inhibiting shunt capacitor inrush phenomenon | |
| CN106849167A (en) | A kind of electric power system and method for supplying power to | |
| CN105453363B (en) | For the method and apparatus of power back-off | |
| CN104167738B (en) | Power quality controlling and energy storage integrated energy saver and its control method | |
| CN104218840A (en) | Micro-grid energy storage topological inverter and method for operating same | |
| CN111224406A (en) | Series capacitor compensation device for mine power distribution network and remote power supply method | |
| CN208241321U (en) | It is a kind of for inhibiting the device and system of shunt capacitor inrush phenomenon | |
| CN110224581A (en) | A kind of common-mode voltage inhibition system | |
| CN201918938U (en) | Liquid capacity expansion soft start device of high-voltage motor | |
| CN107453326A (en) | The protection device and micro-capacitance sensor of a kind of grounding transformer | |
| CN204012712U (en) | Power quality controlling and energy storage integrated energy saver | |
| CN110198032A (en) | A kind of supplied by AC/DC electricity system that feeder ear can be grounded | |
| CN207166122U (en) | The protection device and micro-capacitance sensor of a kind of grounding transformer | |
| CN207320843U (en) | A kind of control device for being applied to adjust three-phase imbalance | |
| Zheng et al. | Protection schemes for turn-to-turn faults within control windings of TCT-CSR and impacts of power regulation | |
| CN104934994A (en) | Low-voltage phase-change switch | |
| CN102270849B (en) | Method for suppressing neutral current of transformer | |
| US11322939B1 (en) | Power quality improvement system with automatic power factor correction and harmonic filtering | |
| CN204497319U (en) | A kind of parallel circuits for zinc bromine liquid energy-storage system | |
| CN113904351A (en) | System and method for inhibiting three-phase-to-ground capacitance imbalance of medium-voltage distribution network | |
| CN206211542U (en) | Idle compensating control and three-phase imbalance reactive power compensator | |
| CN203026952U (en) | Star chain-type STATCOM (static synchronous compensator) device with unbalanced current compensation function | |
| CN205407278U (en) | Unbalanced three phase intelligent regulation device | |
| CN206283260U (en) | A kind of power supply quality optimizes device | |
| CN206023242U (en) | A kind of earthed circuit of the low-voltage direct power distribution network based on flexible direct current networking technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |