CN109254205A - The on-line monitoring method and monitoring device of dry-type air-core reactor active power loss - Google Patents
The on-line monitoring method and monitoring device of dry-type air-core reactor active power loss Download PDFInfo
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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
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
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Abstract
The present invention relates to on-line monitoring of high-voltage electric equipment technical fields, more particularly to the on-line monitoring method and monitoring device of a kind of dry-type air-core reactor active power loss, including current measurement module, voltage measurement module, data processing module and data analysis module, the data of measurement are transported to data processing module by current measurement module and voltage measurement module, and treated that data are transported to data analysis module for data processing module；The power loss that the present invention can generate in real time on-line monitoring dry-type air-core reactor actual motion, and it is capable of the operating status of real time on-line monitoring dry-type air-core reactor, judge whether dry-type air-core reactor is in the hole, measuring technique measurement result is more accurate, it simultaneously can be according to the variation tendency of its active power loss, it was found that the potential insulation defect that dry-type air-core reactor operation generates, guarantees that dry-type air-core reactor is safely and steadily run.
Description
Technical field
The present invention relates to on-line monitoring of high-voltage electric equipment technical fields, and in particular to a kind of dry-type air-core reactor is active
The on-line monitoring method and monitoring device of power loss.
Background technique
It runs to electric system normal table, needs a large amount of reactive-load compensation equipment in parallel.Capacitor is generallyd use both at home and abroad
Device group is as reactive-load compensation equipment, and reactive-load compensation equipment provides reactive power to power grid, for compensating power transmission and transforming equipment and resistance sense
Property load needed for lagging reactive power so that the reactive power in electric system reaches balance between supply and demand, to reduce nothing
Function power flows generated active power loss and voltage drop in electricity grid network, to guarantee supply voltage quality, improves
The power factor of electric system.To safely and steadily run capacitor group, current-limiting reactor is needed to carry out the conjunction of suppression capacitor
Lock shoves and prevents Electric Network Higher Harmonic from amplifying.
In existing, since dry-type air-core reactor has structure is simple, mechanical strength is higher, easy to maintain, price is low etc.
Advantage is widely applied in high-voltage fence.But existing energy monitoring apparatus is not enough to realize dry-type air-core reactor in online prison
It surveys, dry-type air-core reactor power capacitor complexes as caused by conductor joint heating, Reactor Fault etc. cannot normally be thrown
The failure entered is commonplace.There is an urgent need to a kind of on-line monitoring methods now monitors dry-type air-core reactor on-line with realizing,
To find its insulation fault in time, keeps its out of service, avoid the further expansion of accident.
Summary of the invention
In order to solve the above-mentioned technical problem the deficiency in, it is an object of the invention to: a kind of dry-type air-core reactor is provided
The on-line monitoring method and monitoring device of active power loss, can online precise measurement dry-type air-core reactor wattful power
Rate loss, it is without exception to judge that dry-type air-core reactor working condition has, and can pass through the variation tendency of active power loss
Judge whether its insulation deteriorates.
The present invention is technical solution used by solving its technical problem are as follows:
The on-line monitoring method of the dry-type air-core reactor active power loss, comprising the following steps:
Step 1001, start to carry out dry-type air-core reactor active power loss on-line checking；
Step 1002, it is obtained by current measurement module from current transformer TA and is believed by the electric current of dry-type air-core reactor
Number I；
Step 1003, by voltage measurement module where the dry-type air-core reactor bus-bar potential transformer TV1 it is secondary
Side obtains voltage signal U1；
Step 1004, by voltage measurement module from the secondary side of dry-type air-core reactor outgoing line side voltage transformer TV2
(or secondary side of discharge coil) obtains voltage signal U2；
Step 1005, the working voltage of dry-type air-core reactor is calculated according to formula U=U1-U2 for data processing module
U；
Step 1006, the working voltage U of dry-type air-core reactor is carried out Fourier transformation and obtains it by data processing module
Resistive component of voltage U2r and perceptual component of voltage U2l；
Step 1007, having for dry-type air-core reactor consumption is calculated according to formula P=U2r × I in data processing module
Function power P；
Step 1008, data analysis module consumes the dry-type air-core reactor obtained according to abnormal state determination rule
Active-power P and its rated active power loss P1 be compared, judge that the active-power P of dry-type air-core reactor consumption is
It is no to be in abnormality, if being not in abnormality, step 1009 is executed, if being in abnormality, is thened follow the steps
1010；
Step 1009, display unit normally shows the active-power P of dry-type air-core reactor consumption；
Step 1010, data analysis module judges dry-type air-core reactor exception shape according to severe exception status decision rule
Whether the active-power P 2 consumed under state is in severe conditions, if being not in severe conditions, step 1011 is executed, if be in
Severe conditions then follow the steps 1014；
Step 1011, data processing module carries out continuing to track and remember to the active-power P that dry-type air-core reactor consumes
Record, while its period mean power P3 is calculated；
Step 1012, data analysis module judges dry-type air-core reactor in exception according to mile abnormality state decision rule
Whether the active-power P 2 consumed under state is in mile abnormality state, if being not in mile abnormality state, executes step
1009, if being in mile abnormality state, then follow the steps 1013；
Step 1013, data processing module carries out its period mean power P3 to continue tracking；
Step 1014, data analysis module judges the insulation of dry-type air-core reactor according to state of insulation degradation judgment rule
Whether deteriorate, if insulation does not deteriorate, executes step 1015, it is no to then follow the steps 1016；
Step 1015, log-on data abnormal prompt system；
Step 1016, trip command is issued.
Further preferably, current transformer TA is mounted on the outgoing line side of dry reactor in step 1002.
Further preferably, data exception state decision rule is in step 1008, by the dry type measured in step 1007 sky
The active-power P of core device consumption is compared with its rated active power loss P1, if the dry-type air-core reactor measured
The active-power P of consumption is greater than its rated active power loss P1 and is then judged as abnormality, is otherwise not in abnormality.
Further preferably, severe exception status decision rule in step 1010: will be under dry-type air-core reactor abnormality
The active-power P 2 of consumption and dry-type air-core reactor maximum active power loss P4 as defined in existing standard (specified have greater than its
The 15% of function power loss P1) it is compared, if the active-power P 2 consumed under dry-type air-core reactor abnormality is greater than
Dry-type air-core reactor maximum active power loss P4 is then judged as severe conditions.
Further preferably, step 1012 mild or moderate abnormal state determination rule: the period acquired in step 1011 is averaged
Power P 3 is compared with rated active power loss P1, if period mean power P3 is greater than rated active power loss P1
It is determined as mile abnormality state.
Further preferably, in step 1014 state of insulation degradation judgment rule: by continuous time period T1 in step 1013 with
The period mean power P3 (T1) and P3 (T2) of T2 record are compared, if meeting P3 (T1) < P3 within T1 to the T2 period
(T2), then the degradation of insulation for judging dry-type air-core reactor, does not otherwise deteriorate.
The monitoring device of the dry-type air-core reactor active power loss, including current measurement module, voltage measurement
Module, data processing module, discriminatory analysis module, wireless communication module, display and alarm module, current measurement module and voltage
The data of measurement are transported to data processing module by measurement module, and treated that data are transported to discriminatory analysis for data processing module
Module, discriminatory analysis module include trend analysis module and logic analysis module.
Further preferably, the output end of data processing module is connected with the input terminal of wireless communication module, logic analysis mould
The input terminal and the input terminal of trend analysis module and the output end of wireless communication module of block are connected, the trend analysis mould
The output end of block and the output end of logic analysis module access the input terminal of display and alarm module simultaneously.
Further preferably, wireless communication module be Zigbee wireless communication module, comprising wireless host transmitting-receiving submodule and
Wireless host transceiver module.
Further preferably, the voltage measurement module is voltage transformer, and current measurement module is current transformer, described
Data meter processing module is singlechip controller or DSP data processor.
Compared with prior art, the invention has the following advantages:
1, the power loss that the present invention can generate in real time on-line monitoring dry-type air-core reactor actual motion, and energy
The operating status of enough real time on-line monitoring dry-type air-core reactors, judges whether dry-type air-core reactor is in the hole, surveys
Amount technology measurement result is more accurate, while can find dry-type hollow reactance according to the variation tendency of its active power loss
The potential insulation defect that device operation generates, guarantees that dry-type air-core reactor is safely and steadily run, and reduces due to dry-type hollow electricity
The risk of power grid accident caused by anti-device failure.
2, by correctly setting the nominal parameter of dry-type air-core reactor normal operation, the reality that comparison on-line measurement obtains
Parameter and nominal parameter judge whether the operating status of dry-type air-core reactor is normal.If dry-type air-core reactor active power
It is lost bigger, than more serious, then it is impaired to will lead to dry-type air-core reactor insulation for fever, should trip immediately at this time, make dry type
Air reactor state out of service.According to the variation tendency of its period mean power, the dry-type hollow in actual motion is judged
Reactor insulation with the presence or absence of deteriorate risk should issue trip command immediately if judging reactor degradation of insulation, avoid into
One step evolves into accident.
3, since this power capacitor complexes reactor loop fault monitoring system is in the real-time of reactor circuit
The on-line monitoring realized in operation, therefore can be to active power, the reactive power, electric current, reactor that reactor circuit consumes
The data such as inductance carry out real-time monitoring and analyze, timely and effectively discovering device defect.
4, data are accurately obtained to measurement by trend analysis module and carries out trend analysis, accurately to the fortune in reactor circuit
Row state is assessed, and predicts and find the latent defect in reactor circuit in time.
5, by setting wireless communication module, calculated result is accurately uploaded to backstage, is trend analysis module and logic
Analysis module provides criterion support, and operation maintenance personnel is facilitated to accurately hold reactor circuit operation information in real time.
6, pass through display and alarm module, the accurate operating parameter for showing reactor circuit, in time to the event of reactor circuit
Barrier is alarmed.
Detailed description of the invention
Fig. 1 present invention monitors flow chart on-line；
Fig. 2 on-Line Monitor Device structural block diagram of the present invention；
The key wiring diagram of Fig. 3 high-voltage power capacitor complexes application this technology of the present invention.
Specific embodiment
The embodiment of the present invention is described further with reference to the accompanying drawing:
Embodiment 1
As shown in Figure 1-3, the on-line monitoring method of dry-type air-core reactor active power loss of the present invention, including with
Lower step:
Step 1001, start to carry out dry-type air-core reactor active power loss on-line checking；
Step 1002, it is obtained by current measurement module from current transformer TA and is believed by the electric current of dry-type air-core reactor
Number I；Current transformer TA is mounted on the outgoing line side of dry reactor, and it is active that the method can significantly improve dry-type air-core reactor
The accuracy in computation of power loss；
Step 1003, by voltage measurement module where the dry-type air-core reactor bus-bar potential transformer TV1 it is secondary
Side obtains voltage signal U1；
Step 1004, by voltage measurement module from the secondary side of dry-type air-core reactor outgoing line side voltage transformer TV2
(or secondary side of discharge coil) obtains voltage signal U2；
Step 1005, the working voltage of dry-type air-core reactor is calculated according to formula U=U1-U2 for data processing module
U；
Step 1006, the working voltage U of dry-type air-core reactor is carried out Fourier transformation and obtains it by data processing module
Resistive component of voltage U2r and perceptual component of voltage U2l；Dry-type air-core reactor is inductive high tension apparatus, needs a part of electricity
Component is pressed to participate in excitation, it is possible to resistive component of voltage U2r and perceptual component of voltage U2l are obtained by Fourier transformation, into
And accurately obtain the active power of dry-type air-core reactor consumption；
Step 1007, having for dry-type air-core reactor consumption is calculated according to formula P=U2r × I in data processing module
Function power P；Wherein I is the electric current obtained in step 1002 from dry-type air-core reactor outgoing line side, and U2r is that step 1006 decomposites
The resistive component of voltage U2r of dry-type air-core reactor working voltage come；
Step 1008, data analysis module consumes the dry-type air-core reactor obtained according to abnormal state determination rule
Active-power P and its rated active power loss P1 be compared, judge that the active-power P of dry-type air-core reactor consumption is
It is no to be in abnormality, if being not in abnormality, step 1009 is executed, if being in abnormality, is thened follow the steps
1010；Abnormal state determination rule is, by the active-power P and its volume of the dry-type air-core reactor measured in step 1007 consumption
Determine active power loss P1 to compare, if the active-power P of the dry-type air-core reactor consumption measured is specified active greater than its
Power loss P1 is then judged as abnormality, is otherwise not in abnormality.
Step 1009, display unit normally shows the active-power P of dry-type air-core reactor consumption；
Step 1010, data analysis module judges dry-type air-core reactor exception shape according to severe exception status decision rule
Whether the active-power P 2 consumed under state is in severe conditions, if being not in severe conditions, step 1011 is executed, if be in
Severe conditions then follow the steps 1014；Severe exception status decision rule: by what is consumed under dry-type air-core reactor abnormality
Dry-type air-core reactor maximum active power loss P4 as defined in active-power P 2 and existing standard (is greater than its rated active power
The 15% of loss P1) it is compared, if the active-power P 2 consumed under dry-type air-core reactor abnormality is greater than dry type sky
Core device maximum active power loss P4 is then judged as severe conditions.
Step 1011, data processing module carries out continuing to track and remember to the active-power P that dry-type air-core reactor consumes
Record, while its period mean power P3 is calculated；
Step 1012, data analysis module judges dry-type air-core reactor in exception according to mile abnormality state decision rule
Whether the active-power P 2 consumed under state is in mile abnormality state, if being not in mile abnormality state, executes step
1009, if being in mile abnormality state, then follow the steps 1013；Mile abnormality state decision rule: it will be asked in step 1011
The period mean power P3 obtained is compared with rated active power loss P1, if period mean power P3 is greater than specified active
Power loss P1 is then determined as mile abnormality state.
Step 1013, data processing module carries out its period mean power P3 to continue tracking；
Step 1014, data analysis module judges the insulation of dry-type air-core reactor according to state of insulation degradation judgment rule
Whether deteriorate, if insulation does not deteriorate, executes step 1015, it is no to then follow the steps 1016；State of insulation degradation judgment rule: will
The period mean power P3 (T1) and P3 (T2) that continuous time period T1 and T2 is recorded in step 1013 are compared, if in T1 to T2
Meet P3 (T1) < P3 (T2) in period, then judges the degradation of insulation of dry-type air-core reactor, otherwise do not deteriorate.
Step 1015, log-on data abnormal prompt system；
Step 1016, trip command is issued.
The monitoring device of the dry-type air-core reactor active power loss, including current measurement module, voltage measurement
Module, data processing module, discriminatory analysis module, wireless communication module, display and alarm module, current measurement module and voltage
The data of measurement are transported to data processing module by measurement module, and treated that data are transported to discriminatory analysis for data processing module
Module, discriminatory analysis module include trend analysis module and logic analysis module；The output end and channel radio of data processing module
Believe that the input terminal of module is connected, the input terminal of logic analysis module and the input terminal and wireless communication module of trend analysis module
Output end be connected, the output end of the output end of the trend analysis module and logic analysis module access simultaneously display with
The input terminal of alarm module；Wireless communication module is Zigbee wireless communication module, includes wireless host transmitting-receiving submodule and nothing
Line host transceiver module；The voltage measurement module is voltage transformer, and current measurement module is current transformer, the data
Counting processing module is singlechip controller or DSP data processor.
In this power capacitor complexes reactor loop fault monitoring system, the region that reactor circuit includes is
Circuit in power capacitor complexes in addition to power capacitor includes the electric power devices such as reactor, disconnecting switch, breaker
Part.
The course of work and working principle of the invention is as follows:
During power capacitor complexes dry-type air-core reactor power loss on-line monitoring, it need to acquire simultaneously dry
Formula air reactor, which enters, holds voltage, dry-type air-core reactor outlet voltage, three, dry-type air-core reactor leading-out terminal electric current changes
Amount.Enter to hold voltage and outlet voltage to obtain the working voltage of reactor using dry-type air-core reactor, using Fourier transformation
Its working voltage signal is decomposed to obtain its resistive component of voltage U2r and perceptual component of voltage U2l.By its resistive voltage point
Amount U2r obtains its active power loss after being multiplied with leading-out terminal electric current.
The active power loss being calculated is compared with its nominal loss according to the decision rule set, is determined
Rule is divided into data exception, severely subnormal, mile abnormality, and state of insulation deteriorates four kinds of rules, and the method can make electric capacitor
The operating status classification of device complexes dry-type air-core reactor.At power capacitor complexes dry-type air-core reactor
Under severe exception status, trip command is directly issued.When power capacitor complexes dry-type air-core reactor is in slightly
Under abnormality, its shape that insulate according to the Trend judgement of power capacitor complexes dry-type air-core reactor active power loss
Whether state further deteriorates, the log-on data abnormal prompt system if not deteriorating.Trip command is directly issued if having deteriorated.
Claims (10)
1. a kind of on-line monitoring method of dry-type air-core reactor active power loss, which comprises the following steps:
Step 1001, start to carry out dry-type air-core reactor active power loss on-line checking；
Step 1002, the current signal I for passing through dry-type air-core reactor is obtained from current transformer TA by current measurement module；
Step 1003, it is obtained by voltage measurement module from the secondary side of bus-bar potential transformer TV1 where dry-type air-core reactor
Take voltage signal U1；
Step 1004, it (or is put by voltage measurement module from the secondary side of dry-type air-core reactor outgoing line side voltage transformer TV2
The secondary side of electric coil) obtain voltage signal U2；
Step 1005, the working voltage U of dry-type air-core reactor is calculated according to formula U=U1-U2 for data processing module；
Step 1006, the working voltage U of dry-type air-core reactor is carried out Fourier transformation to obtain its resistive by data processing module
Component of voltage U2r and perceptual component of voltage U2l；
Step 1007, the wattful power of dry-type air-core reactor consumption is calculated according to formula P=U2r × I for data processing module
Rate P；
Step 1008, discriminatory analysis module having according to abnormal state determination rule to what the dry-type air-core reactor obtained consumed
Function power P is compared with its rated active power loss P1, judges whether the active-power P of dry-type air-core reactor consumption is located
In abnormality, if being not in abnormality, step 1009 is executed, if being in abnormality, thens follow the steps 1010；
Step 1009, display unit normally shows the active-power P of dry-type air-core reactor consumption；
Step 1010, discriminatory analysis module judges under dry-type air-core reactor abnormality according to severe exception status decision rule
Whether the active-power P 2 of consumption is in severe conditions, if being not in severe conditions, executes step 1011, if in serious
State thens follow the steps 1014；
Step 1011, data processing module carries out continuing to track and record to the active-power P that dry-type air-core reactor consumes, together
When its period mean power P3 is calculated；
Step 1012, discriminatory analysis module judges dry-type air-core reactor in abnormality according to mile abnormality state decision rule
Whether the active-power P 2 of lower consumption is in mile abnormality state, if being not in mile abnormality state, executes step 1009, such as
Fruit is in mile abnormality state, thens follow the steps 1013；
Step 1013, data processing module carries out its period mean power P3 to continue tracking；
Step 1014, discriminatory analysis module according to state of insulation degradation judgment rule judge dry-type air-core reactor insulation whether
Deteriorate, if insulation does not deteriorate, executes step 1015, it is no to then follow the steps 1016；
Step 1015, log-on data abnormal prompt system；
Step 1016, trip command is issued.
2. the on-line monitoring method of dry-type air-core reactor active power loss according to claim 1, which is characterized in that
Current transformer TA is mounted on the outgoing line side of dry reactor in step 1002.
3. the on-line monitoring method of dry-type air-core reactor active power loss according to claim 1, which is characterized in that
Data exception state decision rule is in step 1008, the wattful power that the dry-type air-core reactor measured in step 1007 is consumed
Rate P is compared with its rated active power loss P1, if the active-power P of the dry-type air-core reactor consumption measured is greater than it
Rated active power loss P1 is then judged as abnormality, is otherwise not in abnormality.
4. the on-line monitoring method of dry-type air-core reactor active power loss according to claim 1, which is characterized in that
Severe exception status decision rule in step 1010: by the active-power P 2 consumed under dry-type air-core reactor abnormality and now
There is dry-type air-core reactor maximum active power loss P4 as defined in standard (greater than the 15% of its rated active power loss P1)
It is compared, if the active-power P 2 consumed under dry-type air-core reactor abnormality is greater than dry-type air-core reactor maximum and has
Function power loss P4 is then judged as severe conditions.
5. the on-line monitoring method of dry-type air-core reactor active power loss according to claim 1, which is characterized in that
Step 1012 mild or moderate abnormal state determination rule: the period mean power P3 and rated active power that will be acquired in step 1011
Loss P1 is compared, and is determined as mile abnormality state if period mean power P3 is greater than rated active power loss P1.
6. the on-line monitoring method of dry-type air-core reactor active power loss according to claim 1, which is characterized in that
State of insulation degradation judgment rule in step 1014: by the period mean power of continuous time period T1 in step 1013 and T2 record
P3 (T1) and P3 (T2) are compared, if meeting P3 (T1) < P3 (T2) within T1 to the T2 period, judge dry-type hollow reactance
The degradation of insulation of device, does not otherwise deteriorate.
7. a kind of monitoring device using dry-type air-core reactor active power loss described in any one of claims 1-6,
It is characterized in that, including current measurement module, voltage measurement module, data processing module, discriminatory analysis module, radio communication mold
The data of measurement are transported to data processing module by block, display and alarm module, current measurement module and voltage measurement module, number
According to processing module treated data are transported to discriminatory analysis module, discriminatory analysis module includes trend analysis module and logic point
Analyse module.
8. a kind of monitoring device of dry-type air-core reactor active power loss according to claim 7, which is characterized in that
The output end of data processing module is connected with the input terminal of wireless communication module, the input terminal and trend point of logic analysis module
The input terminal of analysis module is connected with the output end of wireless communication module, the output end and logic point of the trend analysis module
The output end for analysing module accesses the input terminal of display and alarm module simultaneously.
9. a kind of monitoring device of dry-type air-core reactor active power loss according to claim 7, which is characterized in that
Wireless communication module is Zigbee wireless communication module, includes wireless host transmitting-receiving submodule and wireless host transceiver module.
10. a kind of monitoring device of dry-type air-core reactor active power loss according to claim 7, feature exist
In the voltage measurement module is voltage transformer, and current measurement module is current transformer, and the data meter processing module is
Singlechip controller or DSP data processor.
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|---|---|---|---|---|
| CN112946530A (en) * | 2021-02-01 | 2021-06-11 | 山东理工大学 | Transformer turn-to-turn fault and phase identification method and system based on power loss |
| CN113783203A (en) * | 2021-09-07 | 2021-12-10 | 广东鑫钻节能科技股份有限公司 | Residual work recovery and reactive compensation system for air compression station |
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