CN109192626B - A kind of monitoring system of shunt release coil breakage - Google Patents
A kind of monitoring system of shunt release coil breakage Download PDFInfo
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- CN109192626B CN109192626B CN201811171577.3A CN201811171577A CN109192626B CN 109192626 B CN109192626 B CN 109192626B CN 201811171577 A CN201811171577 A CN 201811171577A CN 109192626 B CN109192626 B CN 109192626B
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- acquisition channel
- buckle releaser
- voltage acquisition
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- 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
- H01H71/04—Means for indicating condition of the switching device
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
-
- 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
- H01H71/04—Means for indicating condition of the switching device
- H01H2071/044—Monitoring, detection or measuring systems to establish the end of life of the switching device, can also contain other on-line monitoring systems, e.g. for detecting mechanical failures
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Protection Of Static Devices (AREA)
Abstract
The present invention relates to buckle releaser technical field, a kind of particularly monitoring system of shunt release coil breakage.The invention discloses a kind of monitoring systems of shunt release coil breakage, including buckle releaser and broken string monitoring arrangement, it is serially connected in the control major loop of buckle releaser after broken string monitoring arrangement is in parallel with first switch, the buckle releaser includes controller, excitation coil, trip switch, first voltage acquisition channel and second voltage acquisition channel, the excitation coil coil is connected with trip switch to be followed by between the input terminal and output end of buckle releaser, the control signal of the trip switch and the first control output end of controller connect, the first voltage acquisition channel and second voltage acquisition channel are respectively used to the voltage between the input terminal and output end of acquisition buckle releaser and export to controller, the first voltage acquisition channel is different with the intrinsic standoff ratio of second voltage acquisition channel.The present invention is integrated with trip circuit by monitoring circuit, and structure is simple, at low cost.
Description
Technical field
The invention belongs to buckle releaser technical fields, more particularly to a kind of monitoring system of shunt release coil breakage.
Background technique
The shunt opening of power circuit breaker/combined floodgate buckle releaser working hour instantaneously works, and only must can just work electric moment,
Other time all in must not electricity off working state.And power circuit breaker is very high to reliability requirement, if buckle releaser is not
It can normally close a floodgate or separating brake, will lead to serious consequence, lead to weight huge economic loss.
In order to solve this problem, the occasion high to reliability requirement, it is desirable that the excitation coil state of buckle releaser is supervised
Control avoids the occurrence of broken string and causes separating brake or combined floodgate, common method to be normally in an inactive state, to make swashing for buckle releaser
It encourages coil and flows through electric current, and the electric current is less than drop-away current, outside is monitored by coil supervisory relay or similar broken string
Device, such as PSM692U etc. have the equipment of function for monitoring to acquire electric current, if excitation coil breaks, no current output,
The monitoring arrangement that breaks is alarmed；If excitation coil is normal, then there is electric current output, broken string monitoring arrangement is not alarmed, to ensure that electricity
The reliability of power circuit breaker.
But the standby current output of existing excitation coil is all the individual current output circuit of design, de- with buckle releaser
Button circuit is separation, causes circuit structure complicated, and component is more, at high cost, is unfavorable for device miniaturization.
Summary of the invention
The purpose of the present invention is to provide a kind of monitoring systems of shunt release coil breakage to solve above-mentioned presence
The problem of.
To achieve the above object, a kind of the technical solution adopted by the present invention are as follows: monitoring system of shunt release coil breakage
System, including buckle releaser and broken string monitoring arrangement, are serially connected in the control of buckle releaser after the broken string monitoring arrangement is in parallel with first switch
In major loop processed, the buckle releaser includes controller, excitation coil, trip switch, first voltage acquisition channel and second voltage
Acquisition channel, the excitation coil is connected with trip switch to be followed by between the input terminal and output end of buckle releaser, the tripping
The control signal of switch and the first control output end of controller connect, and the first voltage acquisition channel and second voltage are adopted
Collection channel is respectively used to the voltage between the input terminal and output end of acquisition buckle releaser and exports to controller, the first voltage
The intrinsic standoff ratio of acquisition channel and second voltage acquisition channel is different, and the controller is by calculating first voltage acquisition channel and the
Whether the two collected voltages in voltage acquisition channel access in the control major loop of buckle releaser come the monitoring arrangement that judges to break, if
It is no, then enter normal mode of operation；If so, into monitoring mode, controller exports corresponding pwm signal to trip switch,
The electric current for making the electric current for flowing through excitation coil be less than the control major loop of drop-away current but buckle releaser is greater than broken string monitoring arrangement
Running current.
Further, when entering monitoring mode, if excitation coil breaks, the electric current of the control major loop of buckle releaser is small
In the running current of broken string monitoring arrangement.
Further, when entering monitoring mode, if excitation coil breaks, the electric current of the control major loop of buckle releaser
For 1-3mA.
Further, when entering monitoring mode, controller exports corresponding pwm signal to trip switch, makes to flow through excitation
The electric current of coil is between 5-10mA.
Further, the controller is collected by calculating first voltage acquisition channel and second voltage acquisition channel
Whether voltage curve slope accesses in the control major loop of buckle releaser come the monitoring arrangement that judges to break.
Further, the first voltage acquisition channel includes resistance R1, R2 and R3, the second voltage acquisition channel
Including resistance R4, R5 and R6, described resistance R1, R2 and R3, which are sequentially connected in series, to be followed by between the input terminal and ground of buckle releaser, resistance
Node between R2 and R3 connects the first acquisition input terminal of controller, and described resistance R4, R5 and R6, which are sequentially connected in series, to be followed by threading off
Between the input terminal and ground of device, the node between resistance R5 and R6 meets the second acquisition input terminal of controller, resistance R1, R2 and R3
Total resistance value RZ1The Europe >=4.4M, and resistance R3/RZ1=1/201, the total resistance value R of resistance R4, R5 and R6Z2The Europe >=3.5M,
And resistance R6/RZ2=11/181, if the collected voltage curve slope of second voltage acquisition channel less than 1.5, and first electricity
It presses the collected voltage curve slope of acquisition channel less than 0.3, is then judged as access broken string monitoring arrangement, into monitoring mode；
If the collected voltage curve slope of second voltage acquisition channel is greater than 2.5, and the collected electricity of first voltage acquisition channel
Line slope of buckling is greater than 0.5, then enters normal mode of operation.
It further, further include zener diode D1, the zener diode D1 is in parallel with resistance R6.
It further, further include that PNP triode Q2 and resistance R7, the PNP triode Q2 and resistance R7 series connection are followed by
Between the input terminal and ground of buckle releaser, the base stage of PNP triode Q2 connects the second control output end of controller, when from normal work
When mode enters monitoring mode, if the collected voltage value of first voltage acquisition channel is less than 50%Un, controller control is de-
Button switch is closed, while PNP triode Q2 is connected in output signal, and the electric current of the control major loop of buckle releaser is made to be greater than broken string prison
The running current of view apparatus after continuing for some time, closes PNP triode Q2, continues starting trip switch.
Advantageous effects of the invention:
The present invention becomes one monitoring circuit and trip circuit, can not only guarantee when buckle releaser is applied at the scene
Safety avoids causing unnecessary accident because the excitation coil of buckle releaser breaks, and circuit structure is simple, component compared with
It is few, it is at low cost, be conducive to device miniaturization.
The present invention is by optimizing circuit structure, so that circuit reliability is higher, monitoring effect is more preferable.
Detailed description of the invention
Fig. 1 is the system block diagram of the specific embodiment of the invention；
Fig. 2 is the buckle releaser internal circuit schematic diagram of the specific embodiment of the invention.
Specific embodiment
Now in conjunction with the drawings and specific embodiments, the present invention is further described.
As illustrated in fig. 1 and 2, a kind of monitoring system of shunt release coil breakage, including buckle releaser 2 and broken string monitoring dress
1 is set, is serially connected in the control major loop of buckle releaser 2 after the broken string monitoring arrangement 1 is in parallel with first switch S1, works as first switch
When S1 is disconnected, broken string monitoring arrangement 1 is accessed in the control major loop of buckle releaser 2, into monitoring mode；When first switch S1 is closed
When, broken string monitoring arrangement 1 exits the control major loop of buckle releaser 2, into normal mode of operation.Monitoring arrangement 1 break using existing
The equipment that some has function for monitoring, such as the comprehensive protector of model PSM692U, this is that those skilled in the art can be with
It realizes, no longer describes in detail easily.
The buckle releaser 2 includes controller U1, excitation coil L1, trip switch Q1, first voltage acquisition channel and second
Voltage acquisition channel, the excitation coil L1 connect with trip switch Q1 be followed by buckle releaser 2 input terminal VCC and output end it
Between, in this specific embodiment, trip switch Q1 is realized using PMOS tube, but not limited to this.The grid string of the PMOS tube Q1
Connection resistance R8 is connect with the first control output end of controller U1, the first voltage acquisition channel and second voltage acquisition channel
The voltage and output being respectively used between the input terminal and output end of acquisition buckle releaser 2 give controller U1, and the first voltage is adopted
The intrinsic standoff ratio for collecting channel and second voltage acquisition channel is different, and the controller U1 is by calculating first voltage acquisition channel and the
Whether the two collected voltages in voltage acquisition channel access in the control major loop of buckle releaser 2 come the monitoring arrangement 1 that judges to break, if
It is no, then enter normal mode of operation；If so, controller U1 exports corresponding pwm signal to PMOS tube into monitoring mode
Q1, the electric current for making the electric current for flowing through excitation coil L1 be less than the control major loop of drop-away current but buckle releaser 2 are greater than broken string monitoring
The running current of device 1, broken string monitoring arrangement 1 works normally, if excitation coil L1 breaks, the control master of buckle releaser 2
The electric current in circuit is less than the running current of broken string monitoring arrangement 1, and broken string monitoring arrangement 1 is alarmed.
In this specific embodiment, in order to preferably realize the broken string monitoring to excitation coil L1, to the hard of buckle releaser 2
Unnecessary power consumption need to be reduced more consideration is given to low-power consumption on part and software design, so that the loss of the hardware circuit of buckle releaser 2
Electric current (deducting the electric current by excitation coil) is less than the running current of broken string monitoring arrangement 1, as controller U1 is selected
The processor of low-power consumption is realized, is the dominant frequency no more than 8M, first voltage acquisition channel and second by the working frequency of system
The adc data in voltage acquisition channel using 2MHz dominant frequency carry out data acquisition so that in the case where meeting performance condition ADC acquisition
Power consumption is preferably minimized, and allows system to enter sleep pattern when software runs idle, to guarantee controller U1 at runtime
Electric current be not more than 1mA, the total losses electric current of the hardware circuit of buckle releaser 2 be 1-3mA (but not limited to this, with specific reference to selection
The running current of broken string monitoring arrangement 1 determine), it is ensured that when broken string monitoring, broken string monitoring arrangement 1 being capable of positive common sense
Not.
In this specific embodiment, the controller U1 is by calculating first voltage acquisition channel and second voltage acquisition channel
Whether collected voltage curve slope accesses in the control major loop of buckle releaser 2 come the monitoring arrangement 1 that judges to break.It below will be with
One of design parameter illustrates deterministic process, but not limited to this.
Specifically, the first voltage acquisition channel includes resistance R1, R2 and R3, the second voltage in the present embodiment
Acquisition channel includes resistance R4, R5 and R6, described resistance R1, R2 and R3 be sequentially connected in series be followed by input terminal VCC in buckle releaser 2 with
Between ground, the node between resistance R2 and R3 connects the first acquisition input terminal of controller U1, and described resistance R4, R5 and R6 successively go here and there
Connection is followed by between the input terminal VCC and ground of buckle releaser 2, and the second acquisition that the node between resistance R5 and R6 meets controller U1 is defeated
Enter end, the total resistance value R of resistance R1, R2 and R3Z1The Europe >=4.4M, and resistance R3/RZ1=1/201, resistance R4, R5 and R6's is total
Resistance value RZ2The Europe >=3.5M, and resistance R6/RZ2=11/181, if the collected voltage curve slope of second voltage acquisition channel
Less than 1.5, and the collected voltage curve slope of first voltage acquisition channel is then judged as access broken string monitoring less than 0.3
Device 1 (i.e. first switch S1 disconnection), into monitoring mode；If the collected voltage curve slope of second voltage acquisition channel is big
In 2.5, and the collected voltage curve slope of first voltage acquisition channel is greater than 0.5, then enters normal mode of operation (i.e. the
One switch S1 closure).Preferably, the calculating time of the slope is not more than 3ms, and the delay that otherwise will cause product itself demand misses
Difference becomes larger.
It further include zener diode D1 in this specific embodiment, the zener diode D1 is in parallel with resistance R6, avoids letter
Number level is excessively high and controller U1 pin is caused to burn.
After entering monitoring mode, controller U1 uses pid algorithm, and the collected data of first voltage acquisition channel are turned
Be changed to corresponding pwm signal and export and give PMOS tube Q1, thus control by the current value of excitation coil L1 between 5-10mA (but
It is without being limited thereto, determined with specific reference to the running current of the broken string monitoring arrangement 1 of selection), it is less than drop-away current, but protects
The external broken string monitoring arrangement 1 of card can work normally, and avoid the erroneous judgement of broken string monitoring arrangement 1, when realizing coil without broken string
Function for monitoring.When excitation coil L1 broken string, the electric current only 1-3mA of the control major loop of buckle releaser 2 can not be such that broken string monitors
Device 1 works normally, and the monitoring arrangement 1 that breaks at this time is then judged as that excitation coil L1 breaks, and indicator light, which extinguishes, carries out warning note.
It further include PNP triode Q2 and resistance R7, the PNP triode Q2 and resistance R7 series connection in this specific embodiment
It being followed by between the input terminal VCC and ground of buckle releaser 2, the base stage of PNP triode Q2 connects the second control output end of controller U1,
When entering monitoring mode from normal mode of operation, the voltage at the both ends of buckle releaser 2 can because the access of broken string monitoring arrangement 1 and
Decline.Controller U1 acquires data according to first voltage acquisition channel, is adjusted, changes to the pwm signal of control PMOS tube Q1
Accommodation overdrives the size of current of coil L1, when the voltage value of first voltage acquisition channel acquisition is less than 50%Un, controller
U1 closes PMOS tube Q1, opens simultaneously PNP triode Q2 (resistance R7 load circuit electric current is less than 6mA) substitution excitation coil L1,
Duration is not less than 100ms, to guarantee that excitation coil L1 can discharge completely, after undergoing 100ms, closes PNP triode Q2,
PMOS tube Q1 is continued starting, when 2 both end voltage of buckle releaser is less than 30V and reaches balance (i.e. 2 both end voltage of buckle releaser no longer becomes
Change), then it is judged as into monitoring mode.
Although specifically showing and describing the present invention in conjunction with preferred embodiment, those skilled in the art should be bright
It is white, it is not departing from the spirit and scope of the present invention defined by the appended claims, it in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (8)
1. a kind of monitoring system of shunt release coil breakage, including buckle releaser and broken string monitoring arrangement, it is characterised in that: institute
State broken string monitoring arrangement it is in parallel with first switch after be serially connected in the control major loop of buckle releaser, the buckle releaser including control
Device, excitation coil, trip switch, first voltage acquisition channel and second voltage acquisition channel, the excitation coil are opened with tripping
It closes series connection to be followed by between the input terminal and output end of buckle releaser, the first of the control signal of the trip switch and controller
Control output end connection, the first voltage acquisition channel and second voltage acquisition channel are respectively used to the input of acquisition buckle releaser
Voltage and output between end and output end is to controller, point of the first voltage acquisition channel and second voltage acquisition channel
Pressure ratio is different, and the controller is sentenced by calculating first voltage acquisition channel and the collected voltage of second voltage acquisition channel
Whether line monitoring arrangement accesses in the control major loop of buckle releaser absolutely, if it is not, then entering normal mode of operation；If so, into
Enter monitoring mode, controller exports corresponding pwm signal to trip switch, and the electric current for flowing through excitation coil is made to be less than drop-away current
But the electric current of the control major loop of buckle releaser is greater than the running current of broken string monitoring arrangement.
2. the monitoring system of shunt release coil breakage according to claim 1, it is characterised in that: monitor mould when entering
When formula, if excitation coil breaks, the electric current of the control major loop of buckle releaser is less than the running current of broken string monitoring arrangement.
3. the monitoring system of shunt release coil breakage according to claim 2, it is characterised in that: monitor mould when entering
When formula, if excitation coil breaks, the electric current of the control major loop of buckle releaser is 1-3mA.
4. the monitoring system of shunt release coil breakage according to claim 1, it is characterised in that: monitor mould when entering
Formula, controller export corresponding pwm signal to trip switch, make the electric current for flowing through excitation coil between 5-10mA.
5. the monitoring system of shunt release coil breakage according to claim 1, it is characterised in that: the controller is logical
Calculating first voltage acquisition channel and the collected voltage curve slope of second voltage acquisition channel are crossed to judge broken string monitoring dress
It sets in the control major loop for whether accessing buckle releaser.
6. the monitoring system of shunt release coil breakage according to claim 5, it is characterised in that: the first voltage
Acquisition channel includes resistance R1, R2 and R3, and the second voltage acquisition channel includes resistance R4, R5 and R6, described resistance R1, R2
And R3 is sequentially connected in series and is followed by between the input terminal and ground of buckle releaser, what the node between resistance R2 and R3 connect controller first adopts
Collect input terminal, described resistance R4, R5 and R6, which are sequentially connected in series, to be followed by between the input terminal and ground of buckle releaser, between resistance R5 and R6
Node connect controller second acquisition input terminal, the total resistance value R of resistance R1, R2 and R3Z1The Europe >=4.4M, and resistance R3/
RZ1=1/201, the total resistance value R of resistance R4, R5 and R6Z2The Europe >=3.5M, and resistance R6/RZ2=11/181, if second voltage
The collected voltage curve slope of acquisition channel is less than 1.5, and the collected voltage curve slope of first voltage acquisition channel
Less than 0.3, then it is judged as access broken string monitoring arrangement, into monitoring mode；If the collected voltage of second voltage acquisition channel
The slope of curve is greater than 2.5, and the collected voltage curve slope of first voltage acquisition channel is greater than 0.5, then enters normal work
Operation mode.
7. the monitoring system of shunt release coil breakage according to claim 6, it is characterised in that: further include pressure stabilizing two
Pole pipe D1, the zener diode D1 is in parallel with resistance R6.
8. the monitoring system of shunt release coil breakage according to claim 6, it is characterised in that: further include PNP tri-
Pole pipe Q2 and resistance R7, the PNP triode Q2 and resistance R7 series connection are followed by between the input terminal and ground of buckle releaser, PNP tri-
The base stage of pole pipe Q2 connects the second control output end of controller, when entering monitoring mode from normal mode of operation, if the first electricity
The collected voltage value of acquisition channel is pressed to be less than 50%Un, controller controls trip switch and closes, while output signal makes PNP tri-
Pole pipe Q2 conducting makes the electric current of the control major loop of buckle releaser be greater than the running current of broken string monitoring arrangement, continues one section
After time, PNP triode Q2 is closed, trip switch is continued starting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811171577.3A CN109192626B (en) | 2018-10-09 | 2018-10-09 | A kind of monitoring system of shunt release coil breakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811171577.3A CN109192626B (en) | 2018-10-09 | 2018-10-09 | A kind of monitoring system of shunt release coil breakage |
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| Publication Number | Publication Date |
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| CN109192626A CN109192626A (en) | 2019-01-11 |
| CN109192626B true CN109192626B (en) | 2019-10-29 |
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| CN201811171577.3A Active CN109192626B (en) | 2018-10-09 | 2018-10-09 | A kind of monitoring system of shunt release coil breakage |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110197780B (en) * | 2019-06-05 | 2021-01-12 | 厦门立林电气控制技术有限公司 | Tripping device coil disconnection monitoring circuit |
| CN110146807A (en) * | 2019-06-05 | 2019-08-20 | 厦门立林电气控制技术有限公司 | A kind of trip coil monitoring circuit and monitoring method |
| CN114252762A (en) * | 2020-09-22 | 2022-03-29 | 株洲变流技术国家工程研究中心有限公司 | Detection method and device for shunt release |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042985C (en) * | 1993-10-05 | 1999-04-14 | 富士电机株式会社 | Circuit breaker |
| US7751160B1 (en) * | 2004-07-28 | 2010-07-06 | Pass & Seymour, Inc. | Protective device with separate end-of-life trip mechanism |
| KR200393298Y1 (en) * | 2005-05-18 | 2005-08-22 | 강광열 | A monitoring apparatus for trip coil of circuit breaker |
| CN101552160B (en) * | 2008-03-31 | 2012-01-11 | 北京人民电器厂有限公司 | Circuit protecting switch with delay control device |
| CN201608136U (en) * | 2009-11-20 | 2010-10-13 | 常州工学院 | Undervoltage releaser |
| CN104681370B (en) * | 2015-03-20 | 2018-01-09 | 常州工学院 | A kind of twin coil shunt release |
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2018
- 2018-10-09 CN CN201811171577.3A patent/CN109192626B/en active Active
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