CN206684243U - The on-line monitoring system of power capacitor working condition in reactive power compensator - Google Patents
The on-line monitoring system of power capacitor working condition in reactive power compensator Download PDFInfo
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- CN206684243U CN206684243U CN201720385597.5U CN201720385597U CN206684243U CN 206684243 U CN206684243 U CN 206684243U CN 201720385597 U CN201720385597 U CN 201720385597U CN 206684243 U CN206684243 U CN 206684243U
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- reactive power
- acquisition module
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- working condition
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Abstract
The on-line monitoring system of power capacitor working condition in reactive power compensator, belongs to substation equipment condition monitoring technical field.It is characterized in that：Including parameter measurement unit, signal processing module and logic analysis module, parameter measurement unit includes voltage acquisition module, current acquisition module and temperature collect module, the input of voltage acquisition module, current acquisition module and temperature collect module is connected with reactive power compensator, the output end of voltage acquisition module, current acquisition module and temperature collect module is connected with the input of signal processing module, and the output end of signal processing module is connected with the input of logic analysis module.Pass through the on-line monitoring system of power capacitor working condition in this reactive power compensator, obtain the running parameter of power capacitor in reactive power compensator, therefore avoid and the parameter of power capacitor is detected after needing to power off in the prior art, the reliability of detection greatly increases.
Description
Technical field
The on-line monitoring system of power capacitor working condition in reactive power compensator, belongs to substation equipment condition monitoring skill
Art field.
Background technology
To ensure power system security economical operation, ensure quality of voltage, meet the reactive power demand of resistance inductive load,
The substantial amounts of complete reactive power compensator of installation is needed on the load bus of transformer station, current actual motion statistics shows：It is complete
The accident rate of reactive power compensator remains high, and is in the economy for first of transformer station's all devices, having a strong impact on system operation
With supply voltage quality.Wherein, power capacitor damage accounts for the largest percentage, and reason mainly has following aspect：
1st, the working voltage that power capacitor is born is higher, causes caloric value substantially to increase, easily causes dielectric
Thermal breakdown, power capacitor is caused to damage.
2nd, the loop current of power capacitor significantly increases sometimes, but without associated overvoltage phenomenon, illustrates electric power electricity
Higher hamonic wave be present in container loop current, also result in equipment heating and damage.
3rd, the power capacitor of reactive power compensator is often made up of more power capacitors or Series Parallel Elements, Ge Bieyuan
Part damage can make the voltage's distribiuting of electric capacitor device assembly shift, and the scarce platform operation of capacitor bank, single capacitor fuse are non-
Normal fusing can also cause the apparent capacity amount of capacitor bank to change, and become the reactive power that reactive power compensator exports
Change.
4th, reactive power compensator once puts into operation, is substantially and is run under full load condition, due to running environment temperature
Degree is high, and body temperature is also high, and capacitor, which is under high field intensity, high-temperature, to be run, and dielectric loss increase, insulation ag(e)ing accelerate, be situated between
Matter disruptive discharge, causes thermal breakdown.The working voltage of reactive power compensator is controlled, can also adjust the operation load of power capacitor
Rate, so as to control operating temperature rise.
From the foregoing, in reactive power compensator, reactive power compensator loop current, reactive power compensator actual motion
The operating temperature of voltage, the situation of change of reactive power and reactive power compensator is required to monitor in real time.And in prior art
In, the monitoring of above parameters is required to detect in the event of a power failure when overhauling reactive power compensator, and
Need to coordinate by various professional detection devices and realize, therefore process is complex.Simultaneously because need to power off measurement, so
There may be deviation under the measured value and working condition of many parameters, therefore the reliability of practical operation is poor, therefore significantly
It has impact on the security of reactive power compensator in use.
The content of the invention
The technical problems to be solved in the utility model is：Overcome the deficiencies in the prior art, there is provided one kind can be to idle benefit
The running parameter for repaying device is monitored in real time, and obtains the running parameter of power capacitor in reactive power compensator, therefore is kept away
Exempt to need in the prior art to detect the parameter of power capacitor after power-off, the reliability of detection greatly increases idle
The on-line monitoring system of power capacitor working condition in compensation device.
Technical scheme is used by the utility model solves its technical problem：Power capacitor in the reactive power compensator
The on-line monitoring system of working condition, it is characterised in that：Including parameter measurement unit, signal processing module and logic analysis mould
Block, parameter measurement unit include voltage acquisition module, current acquisition module and temperature collect module, voltage acquisition module, electricity
The input of stream acquisition module and temperature collect module is connected with reactive power compensator, voltage acquisition module, current acquisition mould
The output end of block and temperature collect module is connected with the input of signal processing module, and the output end of signal processing module is with patrolling
The input for collecting analysis module is connected.
Preferably, the input of described voltage acquisition module is connected to the secondary of reactive power compensator substation bus bar
Side.
Preferably, described current measurement module is connected to the secondary side of reactive power compensator outlet switch cabinet.
Preferably, described temperature collect module includes two groups, and one group of case surface for being fixed on power capacitor is another
Group is arranged at intervals with power capacitor.
Preferably, in addition to sound and light alarm module, the output end of described logic analysis module and sound and light alarm module
Input is connected.
Preferably, in addition to wireless communication module, the output end of described logic analysis module and wireless communication module
Input is connected.
Preferably, described current acquisition module, voltage acquisition module are respectively current transformer and voltage transformer.
Compared with prior art, beneficial effect possessed by the utility model is：
1st, can be to reactive-load compensation in this reactive power compensator in the on-line monitoring system of power capacitor working condition
The running parameter of device is monitored in real time, and obtains the running parameter of power capacitor in reactive power compensator, therefore is avoided
Need to detect the parameter of power capacitor after power-off in the prior art, the reliability of detection greatly increases.
2nd, because the on-line monitoring system of power capacitor working condition in this reactive power compensator is in power capacitor
Running in realize the detection of relevant parameter, therefore the reactive power of the output to power capacitor, electric current, voltage are real
When monitor and analyze, can truly reflect its running status, can effectively find to have a power failure and test not detectable equipment deficiency.
3rd, by setting sound and light alarm module, sound and light alarm can be carried out when relevant parameter exceeds predetermined value, therefore greatly
Improve the security of reactive power compensator in use significantly greatly.
4th, it is convenient that the operational factor and warning message that collect are subjected to teletransmission by setting wireless communication module.
5th, realize that therefore price is extremely low by the electrical equipment of routine in parameter measurement unit, greatly reduce measurement into
This.
Brief description of the drawings
Fig. 1 is the on-line monitoring system principle square frame of power capacitor working condition in reactive power compensator.
Embodiment
Fig. 1 is most preferred embodiment of the present utility model, and 1 pair of the utility model is described further below in conjunction with the accompanying drawings.
As shown in figure 1, it is provided with this reactive power compensator in the on-line monitoring system of power capacitor working condition
The parameter measurement unit that is measured to the operational factor of reactive power compensator, signal processing module, logic analysis module, acousto-optic
Alarm module and wireless communication module.The input of the output end connection signal processing module of parameter measurement unit, at signal
Manage the input of the output end connection logic analysis module of module, the output end of logic analysis module respectively with sound and light alarm module
With the input of wireless communication module.
Parameter measurement unit includes：Current acquisition module, voltage acquisition module and temperature collect module, current acquisition mould
The output end of block, voltage acquisition module and temperature collect module accesses the input of signal processing module, signal transacting mould simultaneously
Block is used to be received the data that current acquisition module, voltage acquisition module and temperature collect module collect, and by phase
The data answered are sent into logic analysis module after being changed.
In this reactive power compensator in the on-line monitoring system of power capacitor working condition, voltage acquisition module it is defeated
Enter the secondary side that end is connected to reactive power compensator substation bus bar, for gathering substation bus bar voltage transformer secondary side
Voltage signal；The input of current measurement module is connected to the secondary side of reactive power compensator outlet switch cabinet, for gathering nothing
Current signal in Reactive power compensation installations operating loop, voltage acquisition module and current acquisition module can pass through mutual induction of voltage respectively
Device summation current transformer is realized.
Temperature collect module realizes that temperature sensor includes two groups, the temp probe of one of which by temperature sensor
Be fixed on the shell of power capacitor after insulation processing, for detecting the operating temperature of power capacitor shell, separately
One group and the shell interval setting of power capacitor, for detecting environment temperature during power capacitor operation.
Signal processing module is used for the ginseng for collecting current acquisition module, voltage acquisition module and temperature collect module
Number is handled（Such as carry out analog-to-digital conversion）And logic analysis module is sent into, logic analysis module can be real by the controller of routine
It is existing（Such as single-chip microcomputer, PLC）, logic analysis module send current acquisition module, voltage acquisition module and temperature collect module
Current signal, voltage signal and the temperature signal entered carries out further computing, is alarmed if desired, then logic analysis mould
Block driving sound and light alarm module carries out sound and light alarm；Logic analysis module can also pass through the data received or warning message
Wireless communication module carries out remote transmission.
Specific work process and operation principle are as follows：
In the on-line monitoring system using power capacitor working condition in this reactive power compensator to power capacitor
When working condition is monitored, pass through the voltage acquisition module in parameter measurement unit, current acquisition module and temperature respectively
The secondary side voltage signal of substation bus bar, reactive power compensator outlet are opened where acquisition module obtains reactive power compensator respectively
Close the skin temperature and ambient temperature parameter when current signal and the power capacitor operation of cabinet.Parameter measurement unit
The data collected are respectively fed in signal processing module, logic analysis module is sent into after being changed by signal processing module, by
The current signal and voltage signal that voltage acquisition module and current acquisition module are sent into by logic analysis module are further transported
Calculate.
Logic analysis module calculates the working voltage of power capacitor, and carries out Fourier transformation to current signal I and obtain
To resistive current component therein and capacitive current component, and further calculate the reactive power of power capacitor.Logic point
Module is analysed first by the working voltage of power capacitor compared with its rated value, when the working voltage of power capacitor exceedes
During its rated value, logic analysis module sends pressure regulation instruction or to its incoming line switch cabinet to on-load voltage regulation switch of power transformer
Breaker sends trip command, makes reactive power compensator out of service, and is alarmed by sound and light alarm module, and can lead to
Wireless communication module is crossed to be exported warning message or the parameter collected
The skin temperature power capacitor that logic analysis module is obtained according to temperature collect module is run simultaneously when and
Ambient temperature is detected, and when temperature exceeds predetermined value, logic analysis module is alarmed by sound and light alarm module,
And warning message or the parameter collected can be exported by wireless communication module.
It is described above, only it is preferred embodiment of the present utility model, is not that other forms are made to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of change.But it is every without departing from the content of the technical scheme of the utility model, it is real according to technology of the present utility model
Any simple modification, equivalent variations and the remodeling that confrontation above example is made, still fall within the guarantor of technical solutions of the utility model
Protect scope.
Claims (7)
1. the on-line monitoring system of power capacitor working condition in reactive power compensator, it is characterised in that：Including parameter measurement
Unit, signal processing module and logic analysis module, parameter measurement unit include voltage acquisition module, current acquisition module with
And temperature collect module, voltage acquisition module, the input of current acquisition module and temperature collect module and reactive-load compensation fill
Put connected, the input of voltage acquisition module, the output end of current acquisition module and temperature collect module and signal processing module
End is connected, and the output end of signal processing module is connected with the input of logic analysis module.
2. the on-line monitoring system of power capacitor working condition in reactive power compensator according to claim 1, it is special
Sign is：The input of described voltage acquisition module is connected to the secondary side of reactive power compensator substation bus bar.
3. the on-line monitoring system of power capacitor working condition in reactive power compensator according to claim 1, it is special
Sign is：Described current measurement module is connected to the secondary side of reactive power compensator outlet switch cabinet.
4. the on-line monitoring system of power capacitor working condition in reactive power compensator according to claim 1, it is special
Sign is：Described temperature collect module include two groups, one group of case surface for being fixed on power capacitor, another group and electric power
Capacitor standoff is set.
5. the on-line monitoring system of power capacitor working condition in reactive power compensator according to claim 1, it is special
Sign is：Also include sound and light alarm module, the output end of described logic analysis module and the input phase of sound and light alarm module
Even.
6. the on-line monitoring system of power capacitor working condition in reactive power compensator according to claim 1, it is special
Sign is：Also include wireless communication module, the output end of described logic analysis module and the input phase of wireless communication module
Even.
7. the on-line monitoring system of power capacitor working condition in reactive power compensator according to claim 1, it is special
Sign is：Described current acquisition module, voltage acquisition module are respectively current transformer and voltage transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720385597.5U CN206684243U (en) | 2017-04-13 | 2017-04-13 | The on-line monitoring system of power capacitor working condition in reactive power compensator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720385597.5U CN206684243U (en) | 2017-04-13 | 2017-04-13 | The on-line monitoring system of power capacitor working condition in reactive power compensator |
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| CN206684243U true CN206684243U (en) | 2017-11-28 |
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| CN201720385597.5U Expired - Fee Related CN206684243U (en) | 2017-04-13 | 2017-04-13 | The on-line monitoring system of power capacitor working condition in reactive power compensator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123002A (en) * | 2019-12-18 | 2020-05-08 | 中国南方电网有限责任公司超高压输电公司南宁局 | Non-contact information acquisition health judgment system and method for series compensation device |
| CN112003380A (en) * | 2020-09-07 | 2020-11-27 | 中讯博尔智能技术(无锡)有限公司 | Power monitoring device with power capacitor capacity attenuation monitoring and service life prediction functions |
| CN112666415A (en) * | 2020-12-18 | 2021-04-16 | 安徽链众电气科技有限公司 | Power capacitor on-line monitoring device |
-
2017
- 2017-04-13 CN CN201720385597.5U patent/CN206684243U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123002A (en) * | 2019-12-18 | 2020-05-08 | 中国南方电网有限责任公司超高压输电公司南宁局 | Non-contact information acquisition health judgment system and method for series compensation device |
| CN112003380A (en) * | 2020-09-07 | 2020-11-27 | 中讯博尔智能技术(无锡)有限公司 | Power monitoring device with power capacitor capacity attenuation monitoring and service life prediction functions |
| CN112003380B (en) * | 2020-09-07 | 2023-04-07 | 中讯博尔智能技术(无锡)有限公司 | Power monitoring device with power capacitor capacity attenuation monitoring and service life prediction functions |
| CN112666415A (en) * | 2020-12-18 | 2021-04-16 | 安徽链众电气科技有限公司 | Power capacitor on-line monitoring device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Power capacitor operating condition's on -line monitoring system among reactive power compensator Effective date of registration: 20200107 Granted publication date: 20171128 Pledgee: Industrial and Commercial Bank of China Co.,Ltd. Zibo High tech Branch Pledgor: SHANDONG NDK Co.,Ltd. Registration number: Y2020370000003 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |