CN209387772U - Capacitor group Balame regulating device - Google Patents
Capacitor group Balame regulating device Download PDFInfo
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- CN209387772U CN209387772U CN201822221141.2U CN201822221141U CN209387772U CN 209387772 U CN209387772 U CN 209387772U CN 201822221141 U CN201822221141 U CN 201822221141U CN 209387772 U CN209387772 U CN 209387772U
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Abstract
The utility model provides a kind of capacitor group Balame regulating device, it include: boost module, reference voltage module, out-of-balance current module to be measured and voltage-phase detection module, boost module is connect with high-voltage alternating-current filter C1 capacitor and reference voltage module respectively, for providing high voltage for high-voltage alternating-current filter C1 capacitor and reference voltage module；Reference voltage module is connect with voltage-phase detection module, for incuding the voltage in high-voltage alternating-current filter C1 capacitor high voltage supply circuit；Out-of-balance current module to be measured is connect with high-voltage alternating-current filter C1 capacitor, for incuding the voltage of high-voltage alternating-current filter C1 capacitor；Voltage-phase detection module is connect with out-of-balance current module to be measured, for detecting reference voltage phase and voltage-phase to be measured respectively.The utility model can carry out efficient balancing to high-voltage alternating-current filter, effectively improve the working efficiency of C1 capacitor balancing, and anti-interference is good, and accuracy rate is high, and levelling effect is good.
Description
Technical field
The utility model relates to high-voltage alternating-current filter technical fields, fill more particularly, to a kind of capacitor group balancing
It sets.
Background technique
High-voltage alternating-current filter C1 capacitor is the essential equipment of D.C. high voltage transmission, and converter station passes through high-voltage alternating
Filter carries out harmonic filtration and reactive compensation.High-voltage alternating-current filter C1 capacitor unbalance easily causes failure, direct shadow
Ring the safety and stability of transmission system, it is therefore desirable to which balancing is carried out to it.Traditional balancing mode be use 400V voltage for
High-voltage alternating-current filter C1 capacitor power supply, by the size of current of D.C mutual-inductor inductance capacitance bridge, when its size of current is super
When crossing rated value, by experience and Trend judgement, constantly replacement adjustment capacitor, so that capacitance bridge balances.But traditional leveling side
The shortcomings that formula is that when using the power supply of 400V supply voltage, external electrical field is larger to C1 capacitance interference, the result after leading to leveling
Inaccuracy, it is still uneven；It can not disposably know that the capacitance of which capacitor bridge arm is big, is usually sentenced by experience and trend
It is disconnected, debugging is repeated, takes a long time；And the quantity of usually converter station mesohigh alternating current filter lacks person and has 9 groups, Duo Zheyou 16
Group, balancing heavy workload, working efficiency are extremely low.And the time used in balancing is longer, and it is normal to be easy to influence power plant
It goes into operation, causes huge economic losses to power generation.
Utility model content
In view of this, can be handed over high pressure the purpose of this utility model is to provide a kind of capacitor group Balame regulating device
It flowing filter and carries out efficient balancing, effectively improve the working efficiency of C1 capacitor balancing, anti-interference is good, and accuracy rate is high,
Levelling effect is good, and structure is simple, easy to operate.
In a first aspect, the utility model embodiment provides a kind of capacitor group Balame regulating device, comprising:
Boost module, reference voltage module, out-of-balance current module to be measured and voltage-phase detection module,
The boost module is connect with high-voltage alternating-current filter C1 capacitor and the reference voltage module respectively, for for
The high-voltage alternating-current filter C1 capacitor and the reference voltage module provide high voltage；
The reference voltage module is connect with the voltage-phase detection module, for incuding the high-voltage alternating-current filter
The voltage in the high voltage supply circuit of C1 capacitor bridge out-of-balance current, to provide reference voltage for the voltage-phase detection module
Phase；
The out-of-balance current module to be measured is connect with the high-voltage alternating-current filter C1 capacitor, for incuding the height
The out-of-balance current of alternating current filter C1 capacitor bridge is pressed, to provide uneven electricity to be detected for the voltage-phase detection module
Flow phase；
The voltage-phase detection module is connect with the out-of-balance current module to be measured, for detecting the reference respectively
Voltage-phase and the out-of-balance current phase to be measured, with the capacitance bridge of the adjustment according to needed for the whether identical determination of the two phase
Arm.
With reference to first aspect, the utility model embodiment provides the first possible embodiment of first aspect,
In, the reference voltage module includes voltage reduction module and division module.
The voltage reduction module is connect with the boost module, for the 3.2kV voltage to be depressured；
The division module is connect with the voltage reduction module and the voltage-phase detection module respectively, after to decompression
Voltage divided, and provide reference voltage phase for voltage-phase detection module.
With reference to first aspect, the utility model embodiment provides second of possible embodiment of first aspect,
In, the out-of-balance current module to be measured includes electric current induction module and Current Voltage conversion module,
The electric current induction module is connect with the high-voltage alternating-current filter C1 capacitor, for incuding high-voltage alternating filtering
The out-of-balance current of device C1 capacitor bridge；
The Current Voltage conversion module is connect with the voltage-phase detection module and the electric current induction module respectively,
Electric current for incuding to electric current induction module is converted into voltage, and provides electric current phase to be detected for voltage-phase detection module
Position.
The possible embodiment of second with reference to first aspect, the utility model embodiment provide the of first aspect
Three kinds of possible embodiments, wherein further include current detection module, the current detection module and the Current Voltage are converted
Module connection, for detecting the size of current for flowing through the Current Voltage conversion module, to judge whether need according to size of current
It is leveled.
With reference to first aspect, the utility model embodiment provides the 4th kind of possible embodiment of first aspect,
In, the boost module is also used to 380V or 220V alternating current boosting to 3.2kV.
The first possible embodiment, the utility model embodiment provide the 5th of first aspect with reference to first aspect
The possible embodiment of kind, wherein the boost module includes first switch, second switch and step-up transformer；Described second
Switch input terminal is electrically connected with 220V exchange, and the second input terminal and public input terminal of output end and the step-up transformer connect
It connects；The first switch input terminal and 380V exchange are electrically connected, the first input end of output end and step-up transformer and public defeated
Enter end connection；The output end of the step-up transformer respectively with the high-voltage alternating-current filter C1 capacitor and the voltage reduction module
Connection.
The first possible embodiment, the utility model embodiment provide the 6th of first aspect with reference to first aspect
The possible embodiment of kind, wherein the voltage reduction module is voltage transformer.
Second of possible embodiment with reference to first aspect, the utility model embodiment provide the 7th of first aspect
The possible embodiment of kind, wherein the electric current induction module is current transformer.
With reference to first aspect, the utility model embodiment provides the 8th kind of possible embodiment of first aspect,
In, the voltage-phase detection module is virtual oscilloscope.
The third possible embodiment, the utility model embodiment provide the 9th of first aspect with reference to first aspect
The possible embodiment of kind, wherein the current detection module is ac millivoltmeter.
The utility model embodiment brings following the utility model has the advantages that the utility model is arrived boost in voltage by boost module
Lesser voltage class is interfered to high-voltage alternating-current filter C1 capacitor, while being powered for other circuits；Pass through electrical measurement voltage-mode
Block incudes the electric current to be measured of high-voltage alternating-current filter C1, to provide voltage-phase to be measured；Meanwhile it being provided by reference voltage module
Reference voltage phase；Detect the voltage-phase and reference voltage phase of electric current to be measured respectively by voltage-phase detection module again,
To pass through the capacitor bridge arm of the adjustment according to needed for the whether identical determination of the two phase；The utility model can filter high-voltage alternating
Device carries out efficient balancing, effectively improves the working efficiency of C1 capacitor balancing, and anti-interference is good, and accuracy rate is high, leveling effect
Fruit is good, and structure is simple, easy to operate.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of schematic diagram of capacitor group Balame regulating device provided by the embodiment of the utility model；
Fig. 2 is a kind of another schematic diagram of capacitor group Balame regulating device provided by the embodiment of the utility model；
Fig. 3 is a kind of circuit diagram of capacitor group Balame regulating device provided by the embodiment of the utility model.
Icon: 10- high-voltage alternating-current filter C1 capacitor；20- boost module；30- reference voltage module；31- is depressured mould
Block；32- division module；40- out-of-balance current module to be measured；41- electric current induction module；42- Current Voltage conversion module；50-
Voltage-phase detection module；60- current detection module.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing to this
The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model a part is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, fall within the protection scope of the utility model under the premise of creative work.
For high-voltage alternating-current filter C1 capacitor when carrying out balancing, leveling result inaccuracy, time-consuming, work effect at present
Rate is low, is based on this, a kind of capacitor group Balame regulating device provided by the embodiment of the utility model can filter high-voltage alternating
Device carries out efficient balancing, effectively improves the working efficiency of C1 capacitor balancing, and anti-interference is good, and accuracy rate is high, leveling effect
Fruit is good, and structure is simple, easy to operate.
To be described in detail below by embodiment convenient for understanding the utility model.
Referring to Fig.1, capacitor group Balame regulating device provided in this embodiment, comprising: boost module 20, reference voltage module
30, out-of-balance current module 40 to be measured and voltage-phase detection module 50；
Boost module 20 is connect with high-voltage alternating-current filter C1 capacitor 10 and reference voltage module 30 respectively, for for
High-voltage alternating-current filter C1 capacitor 10 and reference voltage module 30 provide high voltage；
Reference voltage module 30 is connect with voltage-phase detection module 50, for incuding high-voltage alternating-current filter C1 capacitor
The voltage in the high voltage supply circuit of bridge out-of-balance current, to provide reference voltage phase for voltage-phase detection module 50；
Out-of-balance current module 40 to be measured is connected with high-voltage alternating-current filter C1 capacitor bridge, for incuding high-voltage alternating
The out-of-balance current of filter C1 capacitor bridge, to provide out-of-balance current phase to be detected for voltage-phase detection module 50；
Voltage-phase detection module 50 is connect with out-of-balance current module 40 to be measured, for detecting reference voltage phase respectively
With out-of-balance current phase to be measured, with the capacitor bridge arm of the adjustment according to needed for the whether identical determination of the two phase.
Specifically, in order to overcome 400V power supply to be easy to cause electric jamming to high-voltage alternating-current filter C1 capacitor 10, this
Embodiment passes through boost module 20 first and boost in voltage is interfered lesser high pressure to high-voltage alternating-current filter C1 capacitor 10.
Out-of-balance current module 40 to be measured is used to incude the electric current of high-voltage alternating-current filter C1 capacitor bridge, while detecting with voltage-phase
Module 50 is formed into a loop, so that voltage-phase detection module 50 detects the voltage-phase of capacitance bridge.Reference voltage module 30 is used for
Reference voltage is provided, while being formed into a loop with voltage-phase detection module 50, so that voltage-phase detection module 50 is detected as height
The voltage-phase and reference voltage phase in the circuit for pressing alternating current filter C1 capacitor 10 to power.Voltage-phase detection module will
Two voltages are shown that staff is by judging the whether same phase of two voltage-phases, to judge capacitance bridge caused by which bridge arm
It is uneven.
Further, referring to Fig. 2, reference voltage module 30 includes voltage reduction module 31 and division module 32,
Voltage reduction module 31 is connect with boost module 20, for 3.2kV voltage to be depressured；
Division module 32 is connect with voltage reduction module 31 and voltage-phase detection module 50 respectively, for the voltage after decompression
It is divided, and provides reference voltage phase for voltage-phase detection module 50.
Specifically, voltage reduction module 31 uses voltage transformer, is sensed as high-voltage alternating-current filter C1 by voltage transformer
The supply voltage of capacitor 10.When it is implemented, can refer to Fig. 3.In Fig. 3, step-up transformer is incuded by voltage transformer B2
B1 output end voltage, the low-voltage AC that 3.2kV high pressure is depressured as 10V by voltage transformer B2, while with resistance R1, resistance
R2 forming circuit.The one end resistance R1 is connect with the one end voltage transformer B2, and the other end is connect with the one end resistance R2, and resistance R2 is another
One end ground connection.Two input terminals at the both ends of resistance R2 and voltage-phase detection module 50 simultaneously constitute the first circuit.Resistance R1,
Resistance R2 divides 10V voltage, and resistance R2 divides to obtain 1V voltage, and the 1V alternating voltage on resistance R2 is that voltage-phase detects mould
Block 50 is powered.
Further, out-of-balance current module 40 to be measured includes electric current induction module 41 and Current Voltage conversion module 42,
Electric current induction module 41 is connect with high-voltage alternating-current filter C1 capacitor 10, for incuding high-voltage alternating-current filter C1
The out-of-balance current of capacitor bridge；
Current Voltage conversion module 42 is connect with voltage-phase detection module 50 and electric current induction module 41 respectively, is used for
The electric current incuded to electric current induction module 41 divides, and provides electric current phase to be detected for voltage-phase detection module 50
Position.
Specifically, electric current induction module 41 is current transformer.As shown in figure 3, current transformer TA and H-type capacitance bridge
Connection can incude the electric current on the midpoint Ca-Cc and the midpoint Cb-Cd connecting line, the output end and resistance R3 of current transformer TA
The both ends of both ends connection, resistance R3 are connect with two input terminals of voltage-phase detection module 50 again, constitute second servo loop.And it boosts
The 3.2kV voltage-drop loading of module 20 is to 10 both ends of high-voltage alternating-current filter C1 capacitor, so that in the midpoint Ca-Cc and Cb-Cd
And resistance the voltage of 100mV is generated on point connecting line, current transformer TA output end connect with Current Voltage conversion module 42, i.e.,
R3 connection, will be on this voltage-drop loading to resistance R3.Voltage-phase detection module 50 is virtual oscilloscope, it is preferable that voltage phase
Position detection module 50 is binary channels virtual oscilloscope, and virtual oscilloscope can show the voltage-phase in two channels simultaneously, in this way
Virtual oscilloscope can detect the voltage-phase of the first circuit and second servo loop simultaneously.In this way, virtual oscilloscope can be shown
Voltage-phase on resistance R2 on voltage-phase and resistance R3.
It further, further include current detection module 60, current detection module 60 is connect with Current Voltage conversion module 42,
For detecting the size of current for flowing through Current Voltage conversion module 42, to judge whether to be leveled according to size of current.
Preferably, current detection module 60 is ac millivoltmeter, and the both ends of ac millivoltmeter and the both ends of resistance R3 connect
It connects.
It is matched with ac millivoltmeter, the capacitor group balancing method of the present embodiment are as follows:
Virtual oscilloscope shows whether the voltage-phase on resistance R2 and resistance R3 is identical, if identical, shows high pressure
Ca and two bridge arm capacitances of Cd are less than normal in 10 electric bridge of alternating current filter C1 capacitor.If the electricity that ac millivoltmeter is shown simultaneously
Pressure value has been more than 100mV, i.e. the out-of-balance current of high-voltage capacitance bridge has been more than rated value, as such, it is desirable to high-voltage capacitance bridge C1
Carry out balancing.At this point, should be selected in Cd bridge arm for easy to operate (capacitor locations of Ca, Cd are higher, inconvenience replacement)
The capacitor that capacitance is less than normal in capacitance big capacitor and Cc exchanges.
Similarly, if virtual oscilloscope shows resistance R2 with the voltage-phase on resistance R3 on the contrary, and exchanging millivolt simultaneously
The voltage value that table is shown has been more than 100mV, then illustrates that the capacitance of two bridge arms of Cb, Cc is less than normal, at this point, Cd bridge arm should be selected
Capacitance capacitor bigger than normal exchanges in the middle lesser capacitor of capacitance and Cc bridge arm.
Further, boost module 20 is also used to 380V or 220V alternating current boosting to 3.2kV.
Preferably, use AC380V50Hz alternating current as power supply.
Further, boost module 20 includes first switch, second switch and step-up transformer；Second switch input terminal with
220V exchange electrical connection, the second input terminal and public input terminal of output end and step-up transformer connect；First switch input terminal
It is electrically connected with 380V exchange, the first input end and public input terminal of output end and step-up transformer connect；Step-up transformer
Output end is connect with high-voltage alternating-current filter C1 capacitor 10 and voltage reduction module 31 respectively.
Preferably, first switch is 250V63A low-voltage circuit breaker, and the second switch is 450V32A low-voltage circuit breaker.
Specifically, 220V or 380V voltage is connected on step-up transformer B1 according to the actual situation.Step-up transformer B1's
Output end is connect with the both ends at the both ends of high-voltage alternating-current filter C1 and voltage transformer B2 respectively again.It should be noted that such as
Shown in Fig. 3, the iron core and voltage transformer B2 iron core of step-up transformer B1 is grounded.
The beneficial effect of the present embodiment is:
(1) working efficiency of 10 balancing of high-voltage alternating-current filter C1 capacitor, 3~5 groups of annual balance-adjustable are improved
High-voltage alternating-current filter C1 capacitor 10, working efficiency improve at least 10 times；
(2) it is the power supply of high-voltage alternating-current filter C1 capacitor 10 by high voltage power supply, reduces external electrical field to high-voltage alternating
The interference of filter C1 capacitor 10, balancing accuracy is high, and levelling effect is good；
(3) it is effectively reduced because the work of 10 balancing of high-voltage alternating-current filter C1 capacitor is that bring economy in power plant is damaged
It loses；
(4) structure is simple, easy to operate.
The utility model can carry out efficient balancing to high-voltage alternating-current filter, effectively improve C1 capacitor balancing
Working efficiency, anti-interference is good, and accuracy rate is high, and levelling effect is good, and structure is simple, easy to operate.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
The apparatus embodiments described above are merely exemplary, for example, the division of the unit, only one kind are patrolled
Function division is collected, there may be another division manner in actual implementation, in another example, multiple units or components can combine or can
To be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some communication interfaces, device or unit
It connects, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the utility model can integrate in one processing unit,
It can be each unit to physically exist alone, can also be integrated in one unit with two or more units.
Finally, it should be noted that embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical solution of utility model, rather than its limitations, the protection scope of the utility model is not limited thereto, although referring to aforementioned
The utility model is described in detail in embodiment, those skilled in the art should understand that: it is any to be familiar with this skill
The technical staff in art field within the technical scope disclosed by the utility model, still can be to skill documented by previous embodiment
Art scheme modify or can readily occur in variation or equivalent replacement of some of the technical features；And these modifications,
Variation or replacement, the spirit and model of the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
It encloses, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model is answered described is wanted with right
Subject to the protection scope asked.
Claims (10)
1. a kind of capacitor group Balame regulating device characterized by comprising boost module, reference voltage module, imbalance to be measured
Current module and voltage-phase detection module,
The boost module is connect with high-voltage alternating-current filter C1 capacitor and the reference voltage module respectively, for being described
High-voltage alternating-current filter C1 capacitor and the reference voltage module provide high voltage；
The reference voltage module is connect with the voltage-phase detection module, for incuding the high-voltage alternating-current filter C1 electricity
The voltage in the high voltage supply circuit of container bridge out-of-balance current, to provide reference voltage phase for the voltage-phase detection module
Position；
The out-of-balance current module to be measured is connected with the high-voltage alternating-current filter C1 capacitor bridge, for incuding the height
The out-of-balance current of alternating current filter C1 capacitor bridge is pressed, to provide uneven electricity to be detected for the voltage-phase detection module
Flow phase；
The voltage-phase detection module is connect with the out-of-balance current module to be measured, for detecting the reference voltage respectively
Phase and the out-of-balance current phase to be measured, with the capacitor bridge arm of the adjustment according to needed for the whether identical determination of the two phase.
2. capacitor group Balame regulating device according to claim 1, which is characterized in that the reference voltage module includes drop
Die block and division module；
The voltage reduction module is connect with the boost module, for being depressured；
The division module is connect with the voltage reduction module and the voltage-phase detection module respectively, for the electricity after decompression
Pressure is divided, and provides reference voltage phase for the voltage-phase detection module.
3. capacitor group Balame regulating device according to claim 1, which is characterized in that the out-of-balance current module to be measured
Including electric current induction module and Current Voltage conversion module；
The electric current induction module is connect with the high-voltage alternating-current filter C1 capacitor, for incuding the high-voltage alternating filtering
The out-of-balance current of device C1 capacitor bridge；
The Current Voltage conversion module is connect with the voltage-phase detection module and the electric current induction module respectively, is used for
The electric current that the electric current induction module incudes is converted into voltage, and provides electricity to be detected for the voltage-phase detection module
Flow phase.
4. capacitor group Balame regulating device according to claim 3, which is characterized in that it further include current detection module, institute
It states current detection module to connect with the Current Voltage conversion module, for detecting the electricity for flowing through the Current Voltage conversion module
Size is flowed, to judge whether to be leveled according to the size of current.
5. capacitor group Balame regulating device according to claim 1, which is characterized in that the boost module be also used to by
380V or 220V alternating current boosts to 3.2kV.
6. capacitor group Balame regulating device according to claim 2, which is characterized in that the boost module is opened including first
Pass, second switch and step-up transformer；The second switch input terminal is electrically connected with 220V exchange, and output end and the boosting become
Second input terminal of depressor is connected with public input terminal；The first switch input terminal and 380V exchange be electrically connecteds, output end and
The first input end of the step-up transformer is connected with the public input terminal；The output end of the step-up transformer respectively with institute
High-voltage alternating-current filter C1 capacitor is stated to connect with the voltage reduction module.
7. capacitor group Balame regulating device according to claim 2, which is characterized in that the voltage reduction module is mutual induction of voltage
Device.
8. capacitor group Balame regulating device according to claim 3, which is characterized in that the electric current induction module is electric current
Mutual inductor.
9. capacitor group Balame regulating device according to claim 1, which is characterized in that the voltage-phase detection module is
Virtual oscilloscope.
10. capacitor group Balame regulating device according to claim 4, which is characterized in that the current detection module is to hand over
Flow milivoltmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822221141.2U CN209387772U (en) | 2018-12-27 | 2018-12-27 | Capacitor group Balame regulating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822221141.2U CN209387772U (en) | 2018-12-27 | 2018-12-27 | Capacitor group Balame regulating device |
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| CN209387772U true CN209387772U (en) | 2019-09-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112162139A (en) * | 2020-08-27 | 2021-01-01 | 国网宁夏电力有限公司检修公司 | Method, medium and system for measuring unbalanced current of high-voltage capacitor tower |
| CN114167187A (en) * | 2021-12-07 | 2022-03-11 | 中国南方电网有限责任公司超高压输电公司贵阳局 | AC filter capacitor abnormality detection device |
-
2018
- 2018-12-27 CN CN201822221141.2U patent/CN209387772U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112162139A (en) * | 2020-08-27 | 2021-01-01 | 国网宁夏电力有限公司检修公司 | Method, medium and system for measuring unbalanced current of high-voltage capacitor tower |
| CN114167187A (en) * | 2021-12-07 | 2022-03-11 | 中国南方电网有限责任公司超高压输电公司贵阳局 | AC filter capacitor abnormality detection device |
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