CN106501592A - A kind of SF6 breaker open operation electric current Real-time Collections and processing method for switched capacitor reactor - Google Patents
A kind of SF6 breaker open operation electric current Real-time Collections and processing method for switched capacitor reactor Download PDFInfo
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- CN106501592A CN106501592A CN201611016241.0A CN201611016241A CN106501592A CN 106501592 A CN106501592 A CN 106501592A CN 201611016241 A CN201611016241 A CN 201611016241A CN 106501592 A CN106501592 A CN 106501592A
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- open operation
- breaker open
- electric current
- switched capacitor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/06—Non-electrical signal transmission systems, e.g. optical systems through light guides, e.g. optical fibres
Abstract
The invention discloses a kind of SF6 breaker open operation electric current Real-time Collections and processing method for switched capacitor reactor, including step：1）Build SF6 breaker open operation current acquisition topological structure；2）Collecting unit monitor in real time primary cut-out auxiliary contact, judge primary cut-out opening and closing information, are determined with this time point and catch opening and closing instantaneous current value and carry out record ripple, and the record ripple time is 100ms before and after auxiliary contact action；3）SPI storage chips are selected to meet the high speed of data transfer, while consider that the reliability I C buses of system meet normal information communication and only receive SPI chip inner high voltage choppers and cut-offfing, closing transient data access, two-way cooperates；4）Treated digital quantity is sent to combining unit by electro-optic conversion transmission, and then is transferred to industry control server and is analyzed process.
Description
Technical field
The present invention relates to breaker open operation electric current real-time collecting method, more particularly to a kind of for switched capacitor reactor
SF6 breaker open operation electric current Real-time Collections and processing method.
Background technology
With expanding economy, net capacity increases sharply, requirement more and more higher of the power system to power supply reliability.Electric power
Equipment is the primary element of power system, is to ensure power system security, the stable, basis of economical operation.Primary cut-out is
Most important high-tension switch gear in power system, it play dual parts of to control in electrical network and protect, if high pressure is breaking
Device breaks down and can cause large-area power-cuts, causes huge economic loss.
At present, switching substation capacitors reactor mainly has SF6 choppers and vacuum circuit breaker, SF6 choppers to be used for
Frequent switching reactive apparatus（Particularly switched capacitor group）, there is a problem of that electric life is low, loop resistance rises.And using true
Though it is longer that empty chopper is used for frequent switching capacitor bank electric life, there may be in some cases to restrike and ask with overvoltage
Topic, and primary cut-out is more frequent as the more commonly used switching of switching reactive apparatus, so ensureing that transformer station's switching is idle
The reliability of the primary cut-out of equipment seems more urgent.
However, be directly based upon relay protection Verification of Measuring Current Transformer building below data collecting system presence seriously not
Foot：1）Be limited by conventional current transformer characteristic, measurement range can only the rated current of chopper and following measure, no
It is sufficient for chopper and cut-offs the big requirement of moment separating brake rush of current；2）The restriction of the conventional current transformer class of insulation, only
Can be used in the circuit with good insulation and run；3）When SF6 choppers cut-off, often running current is more than specified electricity
Stream, and conventional current transformer can cause serious heating because of magnetic saturation, bring potential safety hazard to power system；4）Real time data is adopted
Collecting system data sampling frequency cannot meet the needs of chopper residue electric life analysis and early warning.
Content of the invention
In order to overcome the disadvantages mentioned above of prior art and deficiency, it is an object of the invention to provide a kind of be used for switching capacitance
The SF6 breaker open operation electric current Real-time Collections of device reactor and processing method.
The purpose of the present invention is achieved through the following technical solutions.
Active distribution network isolated island divides the modeling method of mixed-integer programming model, comprises the following steps：
SF6 breaker open operation electric current Real-time Collections and processing method for switched capacitor reactor, it is characterised in that include
Following steps：
Step 1, structure SF6 breaker open operation current acquisition topological structure；
Step 2, record ripple is carried out to separating brake electric current；
Step 3, the process of data split-phase；
Step 4, utilize SPI and I2C makees data storage；
Step 5, combining unit is transferred to by opto-electronic conversion.
Described in step 1, topological mechanism is divided into 3 layers of mechanism：Data collection layer, information transfer and analysis judge layer.Data
Acquisition layer installs photo-electricity mutual-inductor as collecting unit, Real-time Collection breaker open operation electric current in chopper downstream；Information transfer
Multiline message is pooled to combining unit by optical fiber by layer；Analysis judges that layer is then that analysis is pre- centered on early warning system software
Alert chopper residue electric life.
The triggering of step 2 separating brake current recording comes from auxiliary contacts of circuit breaker.Specifically, the electricity to photo-electricity mutual-inductor
Signal is filtered, integrates, A/D is changed and stores；Monitoring primary cut-out auxiliary contact, judge that primary cut-out opening and closing are believed
Breath, is determined with this time point and catches opening and closing instantaneous current value and carry out record ripple.
Split-phase data processing described in step 3 refers to that A, B, C three-phase integrated signal forms voltage signal passback through specific electrical resistance,
Entering system acquisition device carries out independent process, carries out opto-electronic conversion to output signal.
Signal storage described in step 4 is divided into two kinds of bus forms of I C and SPI.As primary cut-out drop-out current continues
Time is very short, selects SPI storage chips to meet the high speed of data transfer, while considering that the reliability I C buses of system meet
Normal information communication and only reception SPI chip inner high voltage choppers cut-off, close transient data access, and two-way cooperates.
Combining unit described in step 5, can receive multichannel current signal by opto-electronic conversion, and final combining unit is by the signal
Data are transferred to industry control server for the process of early warning system software analysis by RS485/RS232.
Compared with prior art, the present invention has advantages below and beneficial effect：
Firstth, the current transformer that the present invention is measured using wide scope monitors real-time transient state electricity installed in SF6 choppers outfan
Stream, is not restricted by relay protection measurement electric power mutual-inductor characteristic, is that chopper residue electric life assessment data used perform standard
Standby；When SF6 choppers cut-off, running current will not can be caused sternly because of magnetic saturation more than conventional current transformer rated current
Retransmit heat potential safety hazard is brought to power system；
Secondth, the present invention uses modulate circuit, including：Amplifying circuit, integrating circuit, A/D convertor circuit, control circuit and storage
Processing of circuit real-time current signal；Monitoring auxiliary contacts of circuit breaker, judges chopper opening and closing information, is determined with this time point and is caught
Opening and closing instantaneous current value is caught, and opto-electronic conversion is carried out to output signal；
3rd, digital signal is passed back to control room using optical-fibre communications mode by the present invention, is not limited by the class of insulation, to circuit
Insulating properties has no requirement；
4th, split-phase data processing method of the present invention, can be greatly decreased fibre optic installations, cost-effective；Signal is stored
It is divided into two kinds of bus forms of I C and SPI, takes into account high-performance and reliability.
Description of the drawings
Flow charts of the Fig. 1 for the embodiment of the present invention;
Fig. 2 shows for the topological structure of the embodiment of the present invention;
Separating brake current acquisitions of the Fig. 3 for the embodiment of the present invention.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Embodiment
SF6 breaker open operation electric current Real-time Collection and process flow of the present invention for switched capacitor reactor,
As shown in figure 1, comprising the following steps：
Step 1, structure SF6 breaker open operation current acquisition topological structure are divided into 3 layers：Data collection layer, information transfer and point
Analysis judges layer.Data collection layer installs photo-electricity mutual-inductor as collecting unit, Real-time Collection breaker open operation in chopper downstream
Electric current；Multiline message is pooled to combining unit by optical fiber by information transfer；Analysis judges that layer is then with early warning system software
Centered on, analysis and early warning chopper residue electric life.Topological structure such as Fig. 1.
Step 2, the triggering of separating brake current recording come from auxiliary contacts of circuit breaker.Specifically, to photo-electricity mutual-inductor
The signal of telecommunication is filtered, integrates, A/D is changed and stores；Monitoring primary cut-out auxiliary contact, judge primary cut-out opening and closing
Information, is determined with this time point and catches opening and closing instantaneous current value and carry out record ripple.Collecting unit combines primary cut-out auxiliary and touches
Point real-time capture its opening and closing instantaneous current value, the electric signal of the photo-electricity mutual-inductor being captured after filtering, by gathering after amplification
A/D change-over circuits inside unit are processed, and output voltage range is the analog voltage signal of 0～10V, but require to enter ARM cores
The voltage range of piece is 0～2.5V, so 0～2.5V need to be converted voltages into through signaling conversion circuit.Sample frequency is arranged
For：100KHz, carries out sampling processing for STM32.
Step 3, by A, B, C three-phase integrated signal through specific electrical resistance formed voltage signal passback, enter system acquisition dress
Putting carries out independent process, carries out opto-electronic conversion to output signal.
Step 4, signal storage are divided into two kinds of bus forms of I C and SPI.Due to the primary cut-out drop-out current persistent period
Very short, select SPI storage chips to meet the high speed of data transfer, while considering that the reliability I C buses of system meet normally
Information communication and only reception SPI chip inner high voltage choppers cut-off, close transient data access, and two-way cooperates.
Step 5, multichannel current signal can be received by opto-electronic conversion, the signal data is passed through by final combining unit
RS485/RS232 is transferred to industry control server for the process of early warning system software analysis.
The SF6 breaker open operation electric currents for collecting are as shown in Figure 3.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by the embodiment
Limit, other any spirit without departing from the present invention and the change, modification, replacement that is made under principle, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (6)
1. SF6 breaker open operation electric current Real-time Collections and the processing method of switched capacitor reactor are used for, it is characterised in that bag
Include following steps：
Step 1, structure SF6 breaker open operation current acquisition topological structure；
Step 2, record ripple is carried out to separating brake electric current；
Step 3, the process of data split-phase；
Step 4, utilize SPI and I2C makees data storage；
Step 5, combining unit is transferred to by opto-electronic conversion.
2. SF6 breaker open operation electric current Real-time Collections and the place for switched capacitor reactor according to claim 1
Reason method, it is characterised in that topological mechanism is divided into 3-tier architecture described in step 1：Data collection layer, information transfer and analysis
Judge layer；Data collection layer installs photo-electricity mutual-inductor as collecting unit, Real-time Collection breaker open operation electricity in chopper downstream
Stream；Multiline message is pooled to combining unit by optical fiber by information transfer；Analysis judges that layer is then to be with early warning system software
Center, analysis and early warning chopper residue electric life.
3. SF6 breaker open operation electric current Real-time Collections and the place for switched capacitor reactor according to claim 1
Reason method, it is characterised in that in step 2, the triggering of separating brake current recording come from auxiliary contacts of circuit breaker；Specifically, right
The signal of telecommunication of photo-electricity mutual-inductor is filtered, integrates, A/D is changed and stores；Monitoring primary cut-out auxiliary contact, judge high pressure
Chopper opening and closing information, is determined with this time point and catches opening and closing instantaneous current value and carry out record ripple.
4. SF6 breaker open operation electric current Real-time Collections and the place for switched capacitor reactor according to claim 1
Reason method, it is characterised in that split-phase data processing described in step 3 refers to that A, B, C three-phase integrated signal is formed through specific electrical resistance
Voltage signal is returned, and entering system acquisition device carries out independent process, carries out opto-electronic conversion to output signal.
5. SF6 breaker open operation electric current Real-time Collections and the place for switched capacitor reactor according to claim 1
Reason method, it is characterised in that signal storage described in step 4 is divided into two kinds of bus forms of I C and SPI；Due to primary cut-out
The drop-out current persistent period is very short, selects SPI storage chips to meet the high speed of data transfer, while considering the reliability of system
I C buses meet normal information communication and only receive SPI chip inner high voltage choppers to be cut-off, closes transient data access, two-way
Cooperate.
6. SF6 breaker open operation electric current Real-time Collections and the place for switched capacitor reactor according to claim 1
Reason method, it is characterised in that combining unit described in step 5, can receive multichannel current signal by opto-electronic conversion, final merging
The signal data is transferred to industry control server for the process of early warning system software analysis by RS485/RS232 by unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611016241.0A CN106501592A (en) | 2016-11-18 | 2016-11-18 | A kind of SF6 breaker open operation electric current Real-time Collections and processing method for switched capacitor reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611016241.0A CN106501592A (en) | 2016-11-18 | 2016-11-18 | A kind of SF6 breaker open operation electric current Real-time Collections and processing method for switched capacitor reactor |
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| CN106501592A true CN106501592A (en) | 2017-03-15 |
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| CN201611016241.0A Pending CN106501592A (en) | 2016-11-18 | 2016-11-18 | A kind of SF6 breaker open operation electric current Real-time Collections and processing method for switched capacitor reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106980085A (en) * | 2017-04-24 | 2017-07-25 | 珠海伊能电子科技有限公司 | Obtain system, the method and device of primary cut-out residual life |
| CN112783019A (en) * | 2020-12-10 | 2021-05-11 | 国网江苏省电力有限公司盐城供电分公司 | Intelligent control system of high-voltage circuit breaker and detection method thereof |
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| CN201887549U (en) * | 2010-11-22 | 2011-06-29 | 广州智光电气股份有限公司 | Intelligent component device for monitoring circuit breaker |
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Patent Citations (6)
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| CN201177653Y (en) * | 2007-12-21 | 2009-01-07 | 江苏省电力公司扬州供电公司 | Circuit breaker life on-line monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106980085A (en) * | 2017-04-24 | 2017-07-25 | 珠海伊能电子科技有限公司 | Obtain system, the method and device of primary cut-out residual life |
| CN112783019A (en) * | 2020-12-10 | 2021-05-11 | 国网江苏省电力有限公司盐城供电分公司 | Intelligent control system of high-voltage circuit breaker and detection method thereof |
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Application publication date: 20170315 |
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