CN109524252A - A method of the inhibition permanent-magnet breaker closing rebound based on moving average filtering - Google Patents
A method of the inhibition permanent-magnet breaker closing rebound based on moving average filtering Download PDFInfo
- Publication number
- CN109524252A CN109524252A CN201811308354.7A CN201811308354A CN109524252A CN 109524252 A CN109524252 A CN 109524252A CN 201811308354 A CN201811308354 A CN 201811308354A CN 109524252 A CN109524252 A CN 109524252A
- Authority
- CN
- China
- Prior art keywords
- signal
- logical
- moving average
- gate
- sampling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/504—Manual reset mechanisms which may be also used for manual release provided with anti-rebound means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/66—Power reset mechanisms
- H01H71/68—Power reset mechanisms actuated by electromagnet
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
Abstract
The method for inhibiting permanent-magnet breaker closing rebound based on moving average filtering that the invention discloses a kind of, this method is adjusted using the coil current that moving average filtering algorithm acquires sample circuit, then it is control input quantity with coil current and close to switching signal, Discrete control is carried out to the making process of permanent-magnet breaker.The present invention utilizes the feature of making process middle line loop current, realizes the control to contact displacement, it is suppressed that contact bounce can effectively extend the service life of vacuum tube, improve the consistency of closing time.Thus, the control suitable for permanent magnetic vacuum breaker making process.
Description
Technical field
The method for inhibiting permanent-magnet breaker closing rebound based on moving average filtering that the present invention relates to a kind of, belongs to high pressure
Electrical equipment drive and field of intelligent control.
Background technique
Closing rebound, which refers to, to be pushed open after the moving contact of breaker collides static contact by its reaction force, and what is then contacted again shows
As.The breaker of carry load work will be since the spring of contact will generate very high overvoltage, to influence the confession of entire electric system
Electrical stability.Contact bounce will also generate the very big electric arc of electric current, so as to cause high temperature scaling loss contact or even melting welding.With electricity
The higher and higher reliability requirement of Force system, breaker are faced with bigger in electric system power generation, transmission of electricity distribution everyway
Challenge.The reliability of breaker directly influences the safety and stability of electric power, operation.Reduce closing rebound and helps to improve electric energy matter
Amount extends breaker service life.
Summary of the invention
The present invention is exactly directed to closing rebound phenomenon and the deficiencies in the prior art, proposes a kind of based on moving average filtering
Inhibiting the method for permanent-magnet breaker closing rebound, this method can realize the control to contact displacement well, reduce contact bounce,
Improve the consistency of closing time.
To achieve the goals above, technical scheme is as follows: a kind of inhibition permanent magnetism based on moving average filtering
The method of breaker closing spring, includes the following steps:
1) the exciting current I of magnet exciting coil is flowed through using current sensor acquisitionL, sampling interval τ；
2) relationship of electric current and voltage can be obtained according to the characteristic of capacitor and inductance are as follows:
In formula, R and L are respectively the equivalent resistance and inductance value of magnet exciting coil, and C is storage capacitor value.UdWith ILInitial value
It is 0, solves above-mentioned first order differential equation system, it is known that ILFor a smoothed curve, moving average filtering method can be used to sampling
Obtained ILData carry out smothing filtering；
3) from t moment, the smothing filtering of the method for moving average is carried out to the waveform of exciting current:
Wherein, w (L, C, n) is weighting function,When capacitance C is 22mF, inductance value L is
When 0.2H, k value is 1.2.N is the sampling number that the moment is issued from reclosing command to sample circuit current time t；
4) assume that nearest sampling instant is t2, a sampling instant is t thereon1, time interval is sampling period τ, by flat
The current sampling data I of sliding filteringL_out(t1), IL_out(t2), when the two data meet:
IL_out(t2)-IL_out(t1) < 0
And continuous three sampling instants are when all meeting this condition, α=1, and when other situations, α=0；
5) the pwm signal β, β that pwm circuit provides change in duty cycle press the strategy of equal difference decaying, size using duty ratio
It is determined by following formula:
β=β1-kmM, wherein β1Less than 0.4, kmFor tolerance, m is item number.The size of tolerance can flexibly be chosen, km<
0.1, guarantee that the backward voltage of end of travel is smaller；
6) it is mounted on the end of contact combined floodgate stroke close to switch, control input signal γ is provided, contact reaches close open
γ=0 before closing reaches γ=1 after contact-making switch；
7) when closing a floodgate in the incipient stage, the condition of step 4) is unsatisfactory for, and logical value α generates logical value by logic inverter
It is 1 Driving signal g is provided by logic sum gate1、g2, driving switch pipe Q1, Q2, at this point, close to switching signal to drive
Dynamic signal g1、g2Without influence, the output valve of logic sum gate is 1.Logical value provides driving signal g by logical AND gate for 0 α3、
g4, driving switch pipe Q3, Q4, at this point, close to switching signal and pwm signal to driving signal g3、g4Without influence, logical AND gate is defeated
It is out 0.The stage, Q1, Q2 conducting provide the switching current of positive direction；
8) when the condition of step 4) meets but remains as 0 close to switching signal γ, α=1, at this point, logical signal α is passed through
Cross the logical signal of the generation of logic inverter 1Control signal g is generated by logic sum gate with close to together with switching signal γ1、g2,
The output valve of logic sum gate is 0.Logical value α and pwm signal β andBy logical AND gate, provide duty ratio control identical with β
Signal g3、g4.The stage, Q3, Q4 provide duty ratio certain reversed weak magnetic voltage, to reduce the impact for moment of closing a floodgate, reduce touching
Head spring；
9) when contact is moved close to the position of the switch, γ=1, it is 0 that logical value γ, which generates logical value by logic inverter 2,
's Signal alpha and signal beta barrier are provided to driving signal g by logical AND gate3、g4.Logical value γ passes through logic sum gate,
By signalShielding, provides driving signal g1、g2.The stage, combined floodgate are near completion, and Q1, Q2 conducting provide the combined floodgate of positive direction
Electric current guarantees the positive suction of combined floodgate moment, which holds time shorter.
Compared with the existing technology, effect of the invention is as follows:
1) the coil current waveform when present invention is closed a floodgate using sampling element acquisition, and using moving average filtering algorithm to adopting
Sample current data is handled, to apply different control to the different phase of making process according to the feature of switching current
Signal can effectively reduce closing rebound, improve breaker service life and stability of power system；
2) by the judgement to coil current feature, precognition is closed a floodgate the locating stage, and displacement sensor is omitted, reduces control
System cost processed is realized to cephalomotor position-sensorless control is touched, improves the consistency of closing time and the controllability of breaker；
3) in the end of making process, by applying reversed excitation voltage, it can reduce impact of the moment to contact of closing a floodgate,
Extend the service life of breaker vacuum pipe.
Detailed description of the invention
Fig. 1 is a kind of method control system block diagram of inhibition permanent-magnet breaker closing rebound based on moving average filtering；
When Fig. 2 is that permanent-magnet breaker is uncontrolled, making process coil current and contact displacement characteristic curve；
Fig. 3 is when applying to control using the method for the present invention, and making process coil current and contact are displaced corresponding curve.
Specific embodiment
In order to further enhance the appreciation and understanding of the invention, with reference to the accompanying drawings and detailed description to the present invention do more into
The explanation of one step.
Embodiment 1: as shown in Figure 1, Figure 2 and Figure 3, a kind of inhibition permanent-magnet breaker combined floodgate bullet based on moving average filtering
The method of jump, includes the following steps:
1) the exciting current I of magnet exciting coil is flowed through using current sensor acquisitionL, sampling interval τ；
2) relationship of electric current and voltage can be obtained according to the characteristic of capacitor and inductance are as follows:
In formula, R and L are respectively the equivalent resistance and inductance value of magnet exciting coil, and C is storage capacitor value.UdWith ILInitial value
It is 0, solves above-mentioned first order differential equation system, it is known that ILFor a smoothed curve, moving average filtering method can be used to sampling
Obtained ILData carry out smothing filtering；
3) from t moment, the smothing filtering of the method for moving average is carried out to the waveform of exciting current:
Wherein, w (L, C, n) is weighting function,When capacitance C is 22mF, inductance value L is
When 0.2H, k value is 1.2.N is the sampling number that the moment is issued from reclosing command to sample circuit current time t；
4) assume that nearest sampling instant is t2, a sampling instant is t thereon1, time interval is sampling period τ, by flat
The current sampling data I of sliding filteringL_out(t1), IL_out(t2), when the two data meet:
IL_out(t2)-IL_out(t1) < 0
And continuous three sampling instants are when all meeting this condition, α=1, and when other situations, α=0；
5) the pwm signal β, β that pwm circuit provides change in duty cycle press the strategy of equal difference decaying, size using duty ratio
It is determined by following formula:
β=β1-kmM, wherein β1Less than 0.4, kmFor tolerance, m is item number.The size of tolerance can flexibly be chosen, km<
0.1, guarantee that the backward voltage of end of travel is smaller；
6) it is mounted on the end of contact combined floodgate stroke close to switch, control input signal γ is provided, contact reaches close open
γ=0 before closing reaches γ=1 after contact-making switch；
7) when closing a floodgate in the incipient stage, the condition of step 4) is unsatisfactory for, and logical value α generates logical value by logic inverter
It is 1 Driving signal g is provided by logic sum gate1、g2, driving switch pipe Q1, Q2, at this point, close to switching signal to driving
Signal g1、g2Without influence, the output valve of logic sum gate is 1.Logical value provides driving signal g by logical AND gate for 0 α3、g4,
Driving switch pipe Q3, Q4, at this point, close to switching signal and pwm signal to driving signal g3、g4Without influence, logical AND gate output is
0.The stage, Q1, Q2 conducting provide the switching current of positive direction；
8) when the condition of step 4) meets but remains as 0 close to switching signal γ, α=1, at this point, logical signal α is passed through
Cross the logical signal of the generation of logic inverter 1Control signal g is generated by logic sum gate with close to together with switching signal γ1、g2,
The output valve of logic sum gate is 0.Logical value α and pwm signal β andBy logical AND gate, provide duty ratio control identical with β
Signal g3、g4.The stage, Q3, Q4 provide duty ratio certain reversed weak magnetic voltage, to reduce the impact for moment of closing a floodgate, reduce touching
Head spring；
9) when contact is moved close to the position of the switch, γ=1, it is 0 that logical value γ, which generates logical value by logic inverter 2,
's Signal alpha and signal beta barrier are provided to driving signal g by logical AND gate3、g4.Logical value γ passes through logic sum gate,
By signalShielding, provides driving signal g1、g2.The stage, combined floodgate are near completion, and Q1, Q2 conducting provide the combined floodgate of positive direction
Electric current guarantees the positive suction of combined floodgate moment, which holds time shorter.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of method of the inhibition permanent-magnet breaker closing rebound based on moving average filtering, it is characterised in that: the method
Include the following steps:
1) the exciting current I of magnet exciting coil is flowed through using current sensor acquisitionL, sampling interval τ；
2) relationship of electric current and voltage can be obtained according to the characteristic of capacitor and inductance are as follows:
In formula, R and L are respectively the equivalent resistance and inductance value of magnet exciting coil, and C is storage capacitor value, UdWith ILInitial value be
0, solve above-mentioned first order differential equation system, it is known that ILFor a smoothed curve, moving average filtering method can be used, sampling is obtained
ILData carry out smothing filtering；
3) from t moment, the smothing filtering of the method for moving average is carried out to the waveform of exciting current:
4) assume that nearest sampling instant is t2, a sampling instant is t thereon1, time interval is sampling period τ, by smoothly filtering
The current sampling data I of waveL_out(t1), IL_out(t2), when the two data meet:
IL_out(t2)-IL_out(t1) < 0
And continuous three sampling instants are when all meeting this condition, α=1, and when other situations, α=0；
5) pwm circuit provides the pwm signal β of change in duty cycle, and β presses the strategy of equal difference decaying using duty ratio, size by with
Lower formula determines:
β=β1-kmM,
6) it is mounted on the end of contact combined floodgate stroke close to switch, control input signal γ is provided, contact is reached close to before switch
γ=0 reaches γ=1 after contact-making switch；
7) when closing a floodgate in the incipient stage, the condition of step 4) is unsatisfactory for, and it is 1 that logical value α, which generates logical value by logic inverter,
's Driving signal g is provided by logic sum gate1、g2, driving switch pipe Q1, Q2, at this point, believing close to switching signal driving
Number g1、g2Without influence, the output valve of logic sum gate is 1, and logical value provides driving signal g by logical AND gate for 0 α3、g4, drive
Dynamic switching tube Q3, Q4, at this point, close to switching signal and pwm signal to driving signal g3、g4Without influence, logical AND gate output is 0,
The stage, Q1, Q2 conducting provide the switching current of positive direction；
8) when the condition of step 4) meets but remains as 0 close to switching signal γ, α=1, at this point, logical signal α is by patrolling
Collect the logical signal that NOT gate 1 generatesControl signal g is generated by logic sum gate with close to together with switching signal γ1、g2, logic
Or the output valve of door is 0, logical value α and pwm signal β andBy logical AND gate, provide duty ratio control signal identical with β
g3、g4, the stage, Q3, Q4 provide duty ratio certain reversed weak magnetic voltage, to reduce the impact for moment of closing a floodgate, reduce contact bullet
It jumps；
9) when contact is moved close to the position of the switch, γ=1, it is 0 that logical value γ, which generates logical value by logic inverter 2, Signal alpha and signal beta barrier are provided to driving signal g by logical AND gate3、g4, logical value γ, will by logic sum gate
SignalShielding, provides driving signal g1、g2, the stage, combined floodgate is near completion, Q1, Q2 conducting, provides the combined floodgate electricity of positive direction
Stream guarantees the positive suction of combined floodgate moment, which holds time shorter.
2. a kind of method of inhibition permanent-magnet breaker closing rebound based on moving average filtering according to claim 1,
It is characterized by: from t moment, the smooth filter of the method for moving average is carried out to the waveform of exciting current in the step 3)
Wave:
Wherein, w (L, C, n) is weighting function,When capacitance C is 22mF, inductance value L is 0.2H
When, k value is that 1.2, N is the sampling number that the moment is issued from reclosing command to sample circuit current time t.
3. a kind of method of inhibition permanent-magnet breaker closing rebound based on moving average filtering according to claim 1,
It is characterized by: in the step 5), β=β1-kmM, wherein β1Less than 0.4, kmFor tolerance, m is item number, and the size of tolerance can
Flexibly to choose, km< 0.1, guarantee that the backward voltage of end of travel is smaller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308354.7A CN109524252B (en) | 2018-11-05 | 2018-11-05 | Method for inhibiting switching-on bounce of permanent magnet circuit breaker based on moving average filtering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308354.7A CN109524252B (en) | 2018-11-05 | 2018-11-05 | Method for inhibiting switching-on bounce of permanent magnet circuit breaker based on moving average filtering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109524252A true CN109524252A (en) | 2019-03-26 |
| CN109524252B CN109524252B (en) | 2020-07-24 |
Family
ID=65772746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811308354.7A Active CN109524252B (en) | 2018-11-05 | 2018-11-05 | Method for inhibiting switching-on bounce of permanent magnet circuit breaker based on moving average filtering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109524252B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112435891A (en) * | 2020-10-30 | 2021-03-02 | 珠海金电电源工业有限公司 | Electromagnetic drive control method, vacuum circuit breaker control device, and storage medium |
| CN117438241A (en) * | 2023-12-15 | 2024-01-23 | 霍立克电气有限公司 | Switching-on control method of vacuum circuit breaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5743323A (en) * | 1980-08-29 | 1982-03-11 | Fuji Electric Co Ltd | Dc breaker |
| CN102931023A (en) * | 2012-11-13 | 2013-02-13 | 北京交通大学 | Realization of control method and device for vacuum circuit breaker based on coil current |
| JP2014053162A (en) * | 2012-09-07 | 2014-03-20 | Railway Technical Research Institute | Breaker operation state determination apparatus and breaker operation state determination method |
| CN104916490A (en) * | 2015-05-05 | 2015-09-16 | 北京科锐配电自动化股份有限公司 | Permanent-magnet vacuum circuit breaker switching-on/off control method and permanent-magnet vacuum circuit breaker switching-on/off device |
| CN106019131A (en) * | 2016-05-18 | 2016-10-12 | 四川大学 | State comprehensive evaluation method for high-voltage circuit breaker operating mechanism based on switching-on and switching-off coil currents |
-
2018
- 2018-11-05 CN CN201811308354.7A patent/CN109524252B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5743323A (en) * | 1980-08-29 | 1982-03-11 | Fuji Electric Co Ltd | Dc breaker |
| JP2014053162A (en) * | 2012-09-07 | 2014-03-20 | Railway Technical Research Institute | Breaker operation state determination apparatus and breaker operation state determination method |
| CN102931023A (en) * | 2012-11-13 | 2013-02-13 | 北京交通大学 | Realization of control method and device for vacuum circuit breaker based on coil current |
| CN104916490A (en) * | 2015-05-05 | 2015-09-16 | 北京科锐配电自动化股份有限公司 | Permanent-magnet vacuum circuit breaker switching-on/off control method and permanent-magnet vacuum circuit breaker switching-on/off device |
| CN106019131A (en) * | 2016-05-18 | 2016-10-12 | 四川大学 | State comprehensive evaluation method for high-voltage circuit breaker operating mechanism based on switching-on and switching-off coil currents |
Non-Patent Citations (1)
| Title |
|---|
| 徐喆明等: "高压真空断路器的三线圈永磁操动机构分析", 《高压电器》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112435891A (en) * | 2020-10-30 | 2021-03-02 | 珠海金电电源工业有限公司 | Electromagnetic drive control method, vacuum circuit breaker control device, and storage medium |
| CN112435891B (en) * | 2020-10-30 | 2023-02-07 | 珠海金电电源工业有限公司 | Electromagnetic drive control method, vacuum circuit breaker control device, and storage medium |
| CN117438241A (en) * | 2023-12-15 | 2024-01-23 | 霍立克电气有限公司 | Switching-on control method of vacuum circuit breaker |
| CN117438241B (en) * | 2023-12-15 | 2024-03-15 | 霍立克电气有限公司 | Switching-on control method of vacuum circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109524252B (en) | 2020-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104157509B (en) | A kind of control device and method of the quick divide-shut brake of bistable permanent-magnet vacuum circuit breaker | |
| US10217585B2 (en) | Control circuit for composite switch with contact protection based on diode and relay control method | |
| CN106786347B (en) | A kind of hybrid circuit breaker and its application method with bridge-type induction transfer organization | |
| CN105897076A (en) | Switched reluctance motor direct instantaneous torque control method based on voltage vectors | |
| CN109524252A (en) | A method of the inhibition permanent-magnet breaker closing rebound based on moving average filtering | |
| CN105826133B (en) | A kind of electro-magnet switch condition checkout gear and detection method | |
| CN205847092U (en) | ON-OFF control circuit and on-off circuit | |
| US11581818B2 (en) | DC voltage conversion circuit and power supply device | |
| CN106786348A (en) | One kind is based on bridge-type sensing transfer dc circuit breaker and its application method | |
| CN102834888B (en) | Drive circuit for electromagnetic manipulation mechanism | |
| CN203760367U (en) | Permanent magnetic operating mechanism for intelligent circuit breaker | |
| CN208364903U (en) | The twin voltage driving circuit of high-speed switch valve | |
| CN113630013A (en) | Vehicle-mounted DC/DC reverse pre-charging device and control method | |
| CN206807013U (en) | A kind of electric capacitor no-flashy-flow switching circuit | |
| CN203251260U (en) | Brushless DC motor power conversion circuit | |
| CN104022672A (en) | Self-adaptive adjustable delay circuit for soft-switch ZVT (zero voltage transformation) converter | |
| CN201421760Y (en) | Energy-saving AC valve-control electromagnet | |
| CN106059289A (en) | Circuit topological structure capable of solving action dispersity problem of single-coil or dual-coil permanent magnetic mechanism due to idle time and control method thereof | |
| CN109245543A (en) | Half-bridge resonance DC-DC converter and its operating method | |
| CN110752112B (en) | Bistable ultrahigh-speed operating mechanism, direct-current circuit breaker and control method | |
| CN2251780Y (en) | Half-hard magnet electromagnet and control circuit thereof | |
| CN203251261U (en) | Brushless DC motor power conversion circuit | |
| CN205753978U (en) | A kind of unicoil or Double coil permanent magnetic mechanism of solving is because causing the circuit topological structure of action dispersibility standby time | |
| CN200979581Y (en) | A thyristor valves equivalent load testing circuit for a high voltage inverter | |
| CN101226859B (en) | Double coil various current control method for vacuum breaker permanent magnetism mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |