CN108303594A - Online monitoring method and device for capacitor tower - Google Patents
Online monitoring method and device for capacitor tower Download PDFInfo
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- CN108303594A CN108303594A CN201810085336.0A CN201810085336A CN108303594A CN 108303594 A CN108303594 A CN 108303594A CN 201810085336 A CN201810085336 A CN 201810085336A CN 108303594 A CN108303594 A CN 108303594A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 title claims abstract description 17
- 238000004146 energy storage Methods 0.000 claims abstract description 125
- 238000012545 processing Methods 0.000 claims abstract description 58
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 239000011229 interlayer Substances 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012806 monitoring device Methods 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000013481 data capture Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000011835 investigation Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2605—Measuring capacitance
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- Locating Faults (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The embodiment of the invention provides an online monitoring method and device for a capacitor tower, relates to the technical field of radio transmission and signal processing, and solves the problems that in the prior art, when fault alarm of large-capacity capacitor banks is processed, related workers are required to detect each large-capacity capacitor bank one by one, the workload is huge, fault points are not easy to find in time, and the fault alarm cannot be processed in time. The device includes: the data acquisition card is used for acquiring current signals acquired by the current transformers and voltage signals acquired by at least one voltage transformer; the upper computer is used for determining whether at least one energy storage unit has a fault according to the current signals acquired by the data acquisition card and the voltage signals acquired by at least one voltage transformer; and when the at least one energy storage unit is determined to be in fault, generating alarm information of the at least one energy storage unit. The embodiment of the invention is used for manufacturing the on-line monitoring device of the capacitor tower.
Description
Technical field
The present invention relates to wireless radio transmission and signal processing technology field more particularly to a kind of on-line monitoring sides of capacitor tower
Method and device.
Background technology
Power capacitor is widely used as the capital equipment of reactive-load compensation in power grid, and safe operation is to power train
The power quality of system plays an important role, and under current capacitor bank protection mode, large value capacitor group has event
The risk for hindering accumulation, when the failure of large value capacitor group accumulates thing to a certain extent, it may occur that large value capacitor group
Explosion accident constitutes a latent danger to the safe operation of electric system, also brings tremendous influence and damage to the production and life of people
It loses；Therefore, power department can work out periodic preventative maintenance, to a certain extent it can be found that large value capacitor group is deposited
Failure, in time replace there are the large value capacitor groups of failure to avoid accident.
However, being typically to handle the failure report of large value capacitor group by way of hand inspection in the prior art
It is alert, i.e., need relevant staff to detect each large value capacitor one by one after large value capacitor group breaks down alarm
Group, workload is huge and is not easy to find fault point in time, leads to not the timely processing fault alarm.
It can be seen from the above, needing related work people when handling the fault alarm of large value capacitor group in the prior art
Member detects each large value capacitor group one by one, and workload is huge and is not easy to find fault point in time, leads to not locate in time
Manage the fault alarm.
Invention content
The embodiment of the present invention provides a kind of on-line monitoring method and device of capacitor tower, solves and is locating in the prior art
When managing the fault alarm of large value capacitor group, relevant staff is needed to detect each large value capacitor group one by one, worked
It measures huge and the problem of be not easy to find fault point in time, lead to not the timely processing fault alarm.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
First aspect, the embodiment of the present invention provide a kind of on-Line Monitor Device of capacitor tower, and capacitor tower includes at least one
A energy-storage units are serially connected between at least one of capacitor tower energy-storage units, and positioned at at least one of head end position
The input terminal of the input terminals of energy-storage units and capacitor tower connects, be located at the output ends of at least one energy-storage units of terminal position with
The output end of capacitor tower connects, and includes at least one capacitor group at least one energy-storage units, including：Data collecting card, with
And current transformer, at least one voltage transformer being connected with the input terminal of data collecting card, the output of data collecting card
End is connected with the input terminal of host computer, the input terminal of at least one energy-storage units of head end position and the input terminal of capacitor tower it
Between series current mutual inductor, at least one voltage transformer in parallel between the input terminal and output end of at least one energy-storage units；
Wherein, each voltage transformer corresponds to an at least one energy-storage units；Data collecting card is obtained for acquiring current transformer
Current signal and at least one voltage transformer obtain voltage signal；Host computer, for being acquired according to data collecting card
Current signal and at least one voltage transformer obtain voltage signal, determine at least one energy-storage units whether occur therefore
Barrier；When determining that at least one energy-storage units break down, the warning information of at least one energy-storage units is generated.
Optionally, host computer is specifically used for the current signal and at least one acquired according to the first time data capture card
The voltage signal that a voltage transformer obtains, calculates the first capacitance of at least one energy-storage units；Host computer is additionally operable to basis
The voltage signal that the current signal and at least one voltage transformer of second time data capture card acquisition obtain, calculates at least
Second capacitance of one energy-storage units；Host computer is additionally operable to the difference according to the first capacitance and the second capacitance and presets
Fault value, determines whether at least one energy-storage units break down.
Optionally, on-Line Monitor Device further includes：Signal processing module；Wherein, the input terminal and number of signal processing module
It is connected according to the output end of capture card, the output end of signal processing module is connected with the input terminal of host computer；Signal processing mould
Block, what the current signal and at least one voltage transformer that the current transformer for being acquired to data collecting card obtains obtained
Voltage signal carries out signal processing, generates current signal and at least one voltage that the current transformer after signal processing obtains
The voltage signal that mutual inductor obtains；Host computer, the electric current being specifically used for after the signal processing sent according to signal processing module are mutual
The voltage signal that the current signal and at least one voltage transformer that sensor obtains obtain, determines that at least one energy-storage units are
It is no to break down.
Optionally, on-Line Monitor Device further includes：Wireless transport module；Wherein, the input terminal and letter of wireless transport module
The output end of number processing module is connected, and the output end of wireless transport module is connected with the input terminal of host computer；Wireless transmission
Module, the current signal and at least one voltage for obtaining the current transformer after signal processing module signal processing are mutual
The voltage signal that sensor obtains, is forwarded in a manner of wireless transmission and sends supreme position machine.
Optionally, current transformer is dry-type current transformer, and voltage transformer is dry-type voltage inductor.
Optionally, the precision Accuracy of current transformerI∈ [0.5,1]；The precision Accuracy of voltage transformerU∈
[0.5,1].
Optionally, the maximum working voltage of current transformer is greater than or equal to 2.5 times of interlayer rated voltage；Mutual induction of voltage
The maximum working voltage of device is greater than or equal to 2.5 times of interlayer rated voltage.
Optionally, it is per second to be greater than or equal to 1 Gauss for the picking rate of data collecting card.
Second aspect, the embodiment of the present invention provide a kind of on-line monitoring method of capacitor tower, and capacitor tower includes at least one
A energy-storage units are serially connected between at least one of capacitor tower energy-storage units, and positioned at at least one of head end position
The input terminal of the input terminals of energy-storage units and capacitor tower connects, be located at the output ends of at least one energy-storage units of terminal position with
The output end of capacitor tower connects, and includes at least one capacitor group at least one energy-storage units, including：Acquire current transformer
The voltage signal that the current signal of acquisition and at least one voltage transformer obtain；According to current signal and at least one electricity
The voltage signal for pressing mutual inductor to obtain, determines whether at least one energy-storage units break down；When determining at least one energy storage list
When member breaks down, the warning information of at least one energy-storage units is generated.
Optionally, the voltage signal obtained according to current signal and at least one voltage transformer, determines at least one
Whether energy-storage units break down, including：It is obtained according to the current signal of the first moment acquisition and at least one voltage transformer
The voltage signal taken calculates the first capacitance of at least one energy-storage units；According to the second moment acquisition current signal and
The voltage signal that at least one voltage transformer obtains, calculates the second capacitance of at least one energy-storage units；According to the first electricity
The difference of capacity and the second capacitance and preset failure value, determine whether at least one energy-storage units break down.
Optionally, this method further includes：The current signal and at least one voltage transformer obtained to current transformer
The voltage signal of acquisition carries out signal processing, generates the current signal and at least one that the current transformer after signal processing obtains
The voltage signal that a voltage transformer obtains；According to the voltage signal that current signal and at least one voltage transformer obtain,
Determine whether at least one energy-storage units break down, including：The electric current letter obtained according to the current transformer after signal processing
Number and at least one voltage transformer obtain voltage signal, determine whether at least one energy-storage units break down.
The on-line monitoring method and device of capacitor tower provided in an embodiment of the present invention, due in at least one of head end position
Current transformer is concatenated between the input terminal of energy-storage units and the input terminal of capacitor tower, and at least one energy-storage units
A voltage transformer in parallel between input terminal and output end, thus can understand in real time by capacitance present tower at least one
The current signal and voltage signal of a energy-storage units, then host computer can according to data collecting card acquire current signal and
The voltage signal that at least one voltage transformer obtains, determines whether at least one energy-storage units break down；Pass through invention
The on-Line Monitor Device for the capacitor tower that embodiment provides, without as needing work people when capacitor tower is alarmed in the prior art
Member goes to investigate one by one, but can directly determine that failure has occurred in which energy-storage units of capacitor tower, and staff can be more
Problem accurately is found, and then improves the working efficiency of staff；It solves in the prior art in processing large capacity electricity
When the fault alarm of container group, relevant staff is needed to detect each large value capacitor group one by one, workload it is huge and
The problem of being not easy to find fault point in time, lead to not the timely processing fault alarm.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 provides a kind of structural schematic diagram of the on-Line Monitor Device of capacitor tower for the embodiment of the present invention；
Fig. 2 provides a kind of another structural schematic diagram of the on-Line Monitor Device of capacitor tower for the embodiment of the present invention；
Fig. 3 is provides the embodiment of the present invention to a kind of structure for being installed on capacitor tower of the on-Line Monitor Device of capacitor tower
Schematic diagram；
Fig. 4 is provides the embodiment of the present invention to a kind of current transformer and at least one of the on-Line Monitor Device of capacitor tower
A voltage transformer is installed on the structural schematic diagram of capacitor tower；
Fig. 5 is provides the embodiment of the present invention to a kind of structure of the on-Line Monitor Device of capacitor tower in actual application
Schematic diagram；
Fig. 6 is provides the embodiment of the present invention to a kind of flow diagram of the on-line monitoring method of capacitor tower；
Fig. 7 is provides the embodiment of the present invention to a kind of flow diagram of the on-line monitoring method of capacitor tower；
Fig. 8 is provides the embodiment of the present invention to a kind of another flow diagram of the on-line monitoring method of capacitor tower.
Reference numeral：
On-Line Monitor Device -10；
Data collecting card -101；Current transformer -102；Voltage transformer -103；Host computer -104；Signal processing module-
105；Wireless transport module -106.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one, the embodiment of the present invention provide a kind of on-Line Monitor Device 10 of capacitor tower, and capacitor tower includes at least
One energy-storage units is serially connected between at least one of capacitor tower energy-storage units, and positioned at least the one of head end position
The input terminal of a energy-storage units and the input terminal of capacitor tower connect, and are located at the output end of at least one energy-storage units of terminal position
It is connect with the output end of capacitor tower, includes at least one capacitor group at least one energy-storage units, include as shown in Figure 1：
It should be noted that in actual application as shown in Figure 3 and Figure 4, energy-storage units include two layers insulated platform with
And at least one capacitor group on every layer of insulated platform, voltage transformer are simultaneously connected in every layer of at least one capacitor
The first lead incoming end of group；Due to being serially connected between at least one of capacitor tower energy-storage units, pass through each storage
The electric current of energy unit is identical；It then, can according to the voltage transformer of the input terminal of each energy-storage units and output end parallel connection
To detect the voltage signal of current energy-storage units in real time, at least one capacitor group inside energy-storage units breaks down
When, corresponding voltage signal can also change and then the capacitance of the corresponding energy-storage units can also change, therefore pass through
The on-Line Monitor Device for the capacitor tower that embodiment provides can detect the energy storage list to break down in capacitance present tower in real time
Member reduces the examination scope of staff and then improves the working efficiency of staff.
Data collecting card 101, and the current transformer (full name in English that is connected with the input terminal of data collecting card 101：
Current transformer, referred to as：CT) 102, at least one voltage transformer (full name in English：Potential
Transformer, referred to as：PT) 103, the output end of data collecting card 101 is connected with the input terminal of host computer 104, head end position
Series current mutual inductor 102 between the input terminal of at least one energy-storage units and the input terminal of capacitor tower set, at least one storage
At least one voltage transformer 103 in parallel between the input terminal and output end of energy unit；Wherein, each voltage transformer 103 is right
Answer an at least one energy-storage units.
Data collecting card 101, the current signal for acquiring the acquisition of current transformer 102 and at least one mutual induction of voltage
The voltage signal that device 103 obtains.
It should be noted that the phase between data collecting card, current transformer and voltage transformer in actual application
Current signal mutually mating, i.e., that data collecting card can be acquired with Direct Recognition current transformer, data collecting card can also be direct
Identify the voltage signal of voltage transformer acquisition.
Host computer 104, the current signal for being acquired according to data collecting card 101 and at least one voltage transformer
103 voltage signals obtained, determine whether at least one energy-storage units break down；When determining that at least one energy-storage units occur
When failure, the warning information of at least one energy-storage units is generated.
It should be noted that in actual application, can be connected by cable between data collecting card and host computer,
It can also be attached by way of wireless transmission；Illustratively, it is adopted when the mode using wireless transmission is attached data
When truck is with host computer, contact of the staff with high-voltage electrical apparatus is isolated, ensure that the life security of operating personnel.
Specifically, establishing long-term testing mechanism in actual application, it is single that storage can be set in host computer
Member, the voltage signal that the current signal and at least one voltage transformer of capture card acquisition obtain for storing data；To
It can at any time, transfer the measurement data (current signal that current transformer obtains of each energy-storage units of the capacitor tower
And the voltage signal of at least one voltage transformer acquisition), facilitate staff to search historical data.
Optionally, host computer 104, be specifically used for the current signal acquired according to the first time data capture card 101 and
The voltage signal that at least one voltage transformer 103 obtains, calculates the first capacitance of at least one energy-storage units；Host computer
104, the current signal and at least one voltage transformer 103 for being additionally operable to be acquired according to the second time data capture card 101 obtain
The voltage signal taken calculates the second capacitance of at least one energy-storage units；Host computer 104 is additionally operable to according to the first capacitance
With the difference and preset failure value of the second capacitance, determine whether at least one energy-storage units break down.
It should be noted that in actual application, host computer handles the current signal and extremely of data collecting card acquisition
The voltage signal that a few voltage transformer obtains, calculates the first capacitance at least one energy-storage units at the first moment first
Amount；Then delay t milliseconds after the second moment, calculate the second capacitance of at least one energy-storage units again, compare twice
Whether the difference of capacitance reaches failure level, judges whether to export warning message；Wherein, failure level here can be used default
Fault value is defined, i.e., when the difference of the first capacitance and the second capacitance is greater than or equal to preset failure value, indicates
At least one energy-storage units break down；When the difference of the first capacitance and the second capacitance is less than preset failure value, indicate
At least one energy-storage units do not break down.
Specifically, the setting at the first moment and the second moment can be set according to the actual needs in actual application；
Illustratively, it is differed between 0.1ms~1min between the first moment and the second moment, i.e. the difference at the first moment and the second moment
It is worth smaller, obtained data are more accurate.
Illustratively, it is assumed that capacitor unit rated capacitance is CN, after a component breakdown, capacitor amount changes a%；
So：
1, the capacitance of at least one capacitor group of the energy-storage units measured before breakdown is：
Wherein, P indicates that the capacitors count being connected in parallel in energy-storage units, S expressions are connected in series in energy-storage units
Capacitors count, CbIndicate the capacitance of at least one capacitor group of energy-storage units before breakdown.
2, the capacitance after at least one capacitor group breakdown of the energy-storage units measured is：
Wherein, CAIndicate the capacitance after at least one capacitor group breakdown of energy-storage units.
3, the capacitance C before at least one capacitor group breakdown of the energy-storage units measuredbWith the capacitance C after breakdownA's
Difference K is：
Before and after at least one capacitor group breakdown of energy-storage units, the difference of capacitance only at least one capacitor group
Capacitance variations percentage and external cabling are related after failure, therefore the electricity before at least one capacitor group breakdown of energy-storage units
Capacity CbWith the capacitance C after breakdownADifference K can be used as backstage detection status indicator；Being compared using delay can be to avoid temperature
The characteristics of spending, influence of the running situation to capacitance, capacitor breakdown made full use of to be transient process.
Optionally, embodiment as shown in Figure 2 provides a kind of on-Line Monitor Device 10 of capacitor tower and further includes：Signal processing mould
Block 105；Wherein, the input terminal of signal processing module 105 is connected with the output end of data collecting card 101, signal processing module
105 output end is connected with the input terminal of host computer 104；Signal processing module 105, for being acquired to data collecting card 101
Current transformer 102 obtain current signal and at least one voltage transformer 103 obtain voltage signal carry out signal
Processing generates current signal and the acquisition of at least one voltage transformer 103 that the current transformer 102 after signal processing obtains
Voltage signal；Host computer 104, the current transformer being specifically used for after the signal processing sent according to signal processing module 105
The voltage signal that 102 current signals obtained and at least one voltage transformer 103 obtain, determines at least one energy-storage units
Whether break down.
It should be noted that signal processing module can be central processing unit (English in actual application as shown in Figure 5
Full name：Central Processing Unit, referred to as：CPU).
Optionally, embodiment as shown in Figure 2 provides a kind of on-Line Monitor Device 10 of capacitor tower and further includes：It is wirelessly transferred mould
Block 106；Wherein, the input terminal of wireless transport module 106 is connected with the output end of signal processing module 105, is wirelessly transferred mould
The output end of block 106 is connected with the input terminal of host computer 104；Wireless transport module 106 is used for signal processing module 105
The voltage letter that the current signal and at least one voltage transformer 103 that current transformer 102 after signal processing obtains obtain
Number, it is forwarded in a manner of wireless transmission and sends supreme position machine 104.
It should be noted that in actual application, since signal processing module and wireless transport module are operated in high pressure
In the environment of magnetic field, therefore signal processing module and wireless transport module are required to using having high-voltage electrical apparatus to be mutually isolated and not
The signal processing module and wireless transport module that magnetic field is influenced are generated by high pressure, to prevent high voltage magnetic field environment to measurement data
Influence.
Optionally, current transformer 102 is dry-type current transformer, and voltage transformer 103 is dry-type voltage inductor.
It should be noted that in actual application, due to naked oil, the pollution to environment in dry type mutual inductor
Smaller, also allow for staff is installed on maintenance.
Optionally, the precision Accuracy of current transformer 102I∈ [0.5,1]；The precision of voltage transformer 103
AccuracyU∈ [0.5,1].
Optionally, the maximum working voltage of current transformer 102 is greater than or equal to 2.5 times of interlayer rated voltage；Voltage
The maximum working voltage of mutual inductor 103 is greater than or equal to 2.5 times of interlayer rated voltage.
Optionally, it is (1GS/s) per second to be greater than or equal to 1 Gauss for the picking rate of data collecting card 101.
The on-Line Monitor Device of capacitor tower provided in an embodiment of the present invention, due at least one energy storage list in head end position
Current transformer is concatenated between the input terminal and the input terminal of capacitor tower of member, and in the input terminal of at least one energy-storage units
A voltage transformer in parallel between output end, therefore at least one energy storage by capacitance present tower can be understood in real time
The current signal and voltage signal of unit, the current signal and at least one that then host computer can be acquired according to data collecting card
The voltage signal that a voltage transformer obtains, determines whether at least one energy-storage units break down；Pass through the embodiment of invention
The on-Line Monitor Device of the capacitor tower of offer, without as in the prior art needed when capacitor tower is alarmed staff go by
One investigation, but can directly determine that failure has occurred in which energy-storage units of capacitor tower, staff can more accurately
Problem is found, and then improves the working efficiency of staff；Meanwhile prior art staff investigation capacitor tower which
When failure has occurred in a energy-storage units, need to stop the power supply to the capacitor tower, and capacitor tower provided in an embodiment of the present invention
On-Line Monitor Device carries out preventative maintenance without powering off, so that it may save manpower and material resources to carry out investigation；It solves existing
In technology when handling the fault alarm of large value capacitor group, relevant staff is needed to detect each large bulk capacitance one by one
Device group, workload is huge and the problem of being not easy to find fault point in time, lead to not the timely processing fault alarm.
Embodiment two, the embodiment of the present invention provide a kind of on-line monitoring method of capacitor tower, and capacitor tower includes at least one
A energy-storage units are serially connected between at least one of capacitor tower energy-storage units, and positioned at at least one of head end position
The input terminal of the input terminals of energy-storage units and capacitor tower connects, be located at the output ends of at least one energy-storage units of terminal position with
The output end of capacitor tower connects, and includes at least one capacitor group at least one energy-storage units, includes as shown in Figure 6：
The voltage letter that the current signal and at least one voltage transformer that S101, acquisition current transformer obtain obtain
Number.
S102, the voltage signal obtained according to current signal and at least one voltage transformer, determine at least one storage
Whether energy unit breaks down；When determining that at least one energy-storage units break down, the announcement of at least one energy-storage units is generated
Alert information.
Optionally, the embodiment of the present invention as shown in Figure 7 provides S102, basis in a kind of on-line monitoring method of capacitor tower
The voltage signal that current signal and at least one voltage transformer obtain, determines whether at least one energy-storage units occur event
Barrier, including：S1020, the voltage signal obtained according to the current signal and at least one voltage transformer of the acquisition of the first moment,
Calculate the first capacitance of at least one energy-storage units；S1021, according to the current signal and at least one of the second moment acquisition
The voltage signal that voltage transformer obtains, calculates the second capacitance of at least one energy-storage units；S1022, according to the first capacitance
The difference and preset failure value of amount and the second capacitance, determine whether at least one energy-storage units break down.
Optionally, the embodiment of the present invention as shown in Figure 8 provides a kind of on-line monitoring method of capacitor tower and further includes：
The voltage signal progress signal of S1030, current signal and the acquisition of at least one voltage transformer that current transformer is obtained
Processing generates the current signal that the current transformer after signal processing obtains and the voltage that at least one voltage transformer obtains
Signal；S102, the voltage signal obtained according to current signal and at least one voltage transformer, determine at least one energy storage list
Whether member breaks down, including：S1023, the current signal and at least one obtained according to the current transformer after signal processing
The voltage signal that a voltage transformer obtains, determines whether at least one energy-storage units break down.
The on-line monitoring method of capacitor tower provided in an embodiment of the present invention, due at least one energy storage list in head end position
Current transformer is concatenated between the input terminal and the input terminal of capacitor tower of member, and in the input terminal of at least one energy-storage units
A voltage transformer in parallel between output end, therefore at least one energy storage by capacitance present tower can be understood in real time
The current signal and voltage signal of unit, the current signal and at least one that then host computer can be acquired according to data collecting card
The voltage signal that a voltage transformer obtains, determines whether at least one energy-storage units break down；Pass through the embodiment of invention
The on-Line Monitor Device of the capacitor tower of offer, without as in the prior art needed when capacitor tower is alarmed staff go by
One investigation, but can directly determine that failure has occurred in which energy-storage units of capacitor tower, staff can more accurately
Problem is found, and then improves the working efficiency of staff；It solves in the prior art in processing large value capacitor group
Fault alarm when, need relevant staff to detect each large value capacitor group one by one, workload it is huge and be not easy and
The fault points Shi Faxian, the problem of leading to not the timely processing fault alarm.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (11)
1. a kind of on-Line Monitor Device of capacitor tower, the capacitor tower includes at least one energy-storage units, in the capacitor tower
Be serially connected between at least one energy-storage units, and positioned at head end position at least one energy-storage units input terminal with it is described
The input terminal of capacitor tower connects, and is located at the output end of the output end and the capacitor tower of at least one energy-storage units of terminal position
It connects, includes at least one capacitor group at least one energy-storage units, which is characterized in that including：
Data collecting card, and the current transformer, at least one voltage that are connected with the input terminal of the data collecting card are mutual
Sensor, the output end of the data collecting card are connected with the input terminal of host computer, at least one energy storage of the head end position
It connects between the input terminal of unit and the input terminal of the capacitor tower current transformer, at least one energy-storage units
At least one voltage transformer in parallel between input terminal and output end；Wherein, each voltage transformer corresponds to described in one
At least one energy-storage units；
The data collecting card, current signal and at least one voltage transformer for acquiring current transformer acquisition obtain
Voltage signal；
The host computer, the current signal and at least one voltage for being acquired according to the data collecting card are mutual
The voltage signal that sensor obtains, determines whether at least one energy-storage units break down；
When determining that at least one energy-storage units break down, the warning information of at least one energy-storage units is generated.
2. the on-Line Monitor Device of capacitor tower according to claim 1, which is characterized in that the host computer is specifically used for
The voltage signal that the current signal and at least one voltage transformer acquired according to data collecting card described in the first moment obtains,
Calculate the first capacitance of at least one energy-storage units；
The host computer is additionally operable to the current signal acquired according to data collecting card described in the second moment and at least one voltage
The voltage signal that mutual inductor obtains, calculates the second capacitance of at least one energy-storage units；
The host computer is additionally operable to according to the difference of first capacitance and second capacitance and preset failure value, really
Whether fixed at least one energy-storage units break down.
3. the on-Line Monitor Device of capacitor tower according to claim 1, which is characterized in that the on-Line Monitor Device is also wrapped
It includes：Signal processing module；Wherein, the input terminal of the signal processing module is connected with the output end of the data collecting card,
The output end of the signal processing module is connected with the input terminal of the host computer；
The signal processing module, the current signal of the current transformer acquisition for acquire to the data collecting card with
And the voltage signal that at least one voltage transformer obtains carries out signal processing, generates the current transformer after signal processing
The voltage signal that the current signal of acquisition and at least one voltage transformer obtain；
The host computer is specifically used for what the current transformer after the signal processing sent according to the signal processing module obtained
The voltage signal that current signal and at least one voltage transformer obtain, determines whether at least one energy-storage units occur event
Barrier.
4. the on-Line Monitor Device of capacitor tower according to claim 3, which is characterized in that the on-Line Monitor Device is also wrapped
It includes：Wireless transport module；Wherein, the input terminal of the wireless transport module is connected with the output end of the signal processing module
It connects, the output end of the wireless transport module is connected with the input terminal of the host computer；
The wireless transport module, the electric current for obtaining the current transformer after the signal processing module signal processing are believed
Number and at least one voltage transformer obtain voltage signal, be forwarded and be sent on described in a manner of wireless transmission
Position machine.
5. according to the on-Line Monitor Device of claim 1-4 any one of them capacitor towers, which is characterized in that the Current Mutual Inductance
Device is dry-type current transformer, and the voltage transformer is dry-type voltage inductor.
6. according to the on-Line Monitor Device of claim 1-4 any one of them capacitor towers, which is characterized in that the Current Mutual Inductance
The precision Accuracy of deviceI∈ [0.5,1]；The precision Accuracy of the voltage transformerU∈ [0.5,1].
7. according to the on-Line Monitor Device of claim 1-4 any one of them capacitor towers, which is characterized in that the Current Mutual Inductance
The maximum working voltage of device is greater than or equal to 2.5 times of interlayer rated voltage；
The maximum working voltage of the voltage transformer is greater than or equal to 2.5 times of interlayer rated voltage.
8. according to the on-Line Monitor Device of claim 1-4 any one of them capacitor towers, which is characterized in that the data acquisition
It is per second that the picking rate of card is greater than or equal to 1 Gauss.
9. a kind of on-line monitoring method of capacitor tower, the capacitor tower includes at least one energy-storage units, in the capacitor tower
Be serially connected between at least one energy-storage units, and positioned at head end position at least one energy-storage units input terminal with it is described
The input terminal of capacitor tower connects, and is located at the output end of the output end and the capacitor tower of at least one energy-storage units of terminal position
It connects, includes at least one capacitor group at least one energy-storage units, which is characterized in that including：
Acquire the current signal that current transformer obtains and the voltage signal that at least one voltage transformer obtains；
According to the voltage signal that the current signal and at least one voltage transformer obtain, at least one energy storage is determined
Whether unit breaks down；
When determining that at least one energy-storage units break down, the warning information of at least one energy-storage units is generated.
10. the on-line monitoring method of capacitor tower according to claim 9, which is characterized in that described to be believed according to the electric current
Number and the voltage signal that obtains of at least one voltage transformer, determine whether at least one energy-storage units break down,
Including：
According to the voltage signal that the current signal of the first moment acquisition and at least one voltage transformer obtain, at least one is calculated
First capacitance of a energy-storage units；
According to the voltage signal that the current signal of the second moment acquisition and at least one voltage transformer obtain, at least one is calculated
Second capacitance of a energy-storage units；
According to the difference of first capacitance and second capacitance and preset failure value, at least one energy-storage units are determined
Whether break down.
11. the on-line monitoring method of capacitor tower according to claim 9, which is characterized in that the method further includes：
The voltage signal that the current signal and at least one voltage transformer obtained to the current transformer obtains into
Row signal processing generates current signal and the acquisition of at least one voltage transformer that the current transformer after signal processing obtains
Voltage signal；
It is described according to the current signal and voltage signal that at least one voltage transformer obtains, determine at least one
Whether energy-storage units break down, including：
What the current signal and at least one voltage transformer obtained according to the current transformer after the signal processing obtained
Voltage signal, determines whether at least one energy-storage units break down.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810085336.0A CN108303594A (en) | 2018-01-29 | 2018-01-29 | Online monitoring method and device for capacitor tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810085336.0A CN108303594A (en) | 2018-01-29 | 2018-01-29 | Online monitoring method and device for capacitor tower |
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| CN108303594A true CN108303594A (en) | 2018-07-20 |
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| CN201810085336.0A Pending CN108303594A (en) | 2018-01-29 | 2018-01-29 | Online monitoring method and device for capacitor tower |
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