CN106602517A - Voltage stabilizer self-protective method - Google Patents
Voltage stabilizer self-protective method Download PDFInfo
- Publication number
- CN106602517A CN106602517A CN201611200765.5A CN201611200765A CN106602517A CN 106602517 A CN106602517 A CN 106602517A CN 201611200765 A CN201611200765 A CN 201611200765A CN 106602517 A CN106602517 A CN 106602517A
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- Prior art keywords
- voltage
- stablizer
- output
- input
- self
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1203—Circuits independent of the type of conversion
Abstract
The invention discloses a voltage stabilizer self-protective method. The overload protection method includes the following steps: A. determining whether an input current detected by a current detection circuit exceeds a preset current value; B. If the input current exceeds the preset value, controlling a voltage stabilizer to enter an overload protection mode, i.e., setting time delay and outputting information for alerting a user to reduce load via a display interface; C. when the overcurrent time delay completes, the input current still exceeds a preset current value, disconnecting the load; D. prior to the end of the overload time delay, and if the input current is lower than the preset current value, canceling the overcurrent time delay; and E. If the input current in step A is lower than the preset current value or the step D cancels overcurrent time delay, using the temperature level value detected by the temperature detection circuit, determining whether the voltage stabilizer has a normal temperature, and if the voltage stabilizer has an abnormal temperature, disconnecting the load.
Description
Technical field
The present invention relates to voltage-stablizer, specifically a kind of voltage-stablizer self-protecting method.
Background technology
Relay type AC voltage stabilizer（Hereinafter referred to as voltage-stablizer）, as a kind of remediation tools of electrical network, in severe use
In the middle of environment, the safety and stability of its own work has become the key element of the most critical of user's consideration.Common voltage-stablizer, one
As only possess the detection to load end and protection, the overvoltage and under-voltage protection of such as output voltage, the excessive protection of load, transformer
Temperature protection, its protection act without exception all be turned off output, referring to Fig. 1.
In the use of voltage-stablizer, due to actual environment reason, such as dust is excessive, humidity is excessive, temperature is too high, electrical network
Excessively frequently, the aging speed of electronic devices and components will be accelerated for input bounce, and use time reaches that voltage-stablizer of prescribing a time limit in year just has can
Can be because these device reasons generations cannot pressure regulation failure（Output voltage is not in normal range (NR)）.Cut off in this case defeated
Although going out, load can be protected, for voltage-stablizer itself, due to it is internal produce failure cannot normally pressure regulation, higher input
Voltage is possible to from the low-voltage tap of transformer enter or PCB failures cause transformer tapping short circuit, and voltage-stablizer will
The possibility of PCB or transformer is burnt in appearance, and from for the security standpoint of product, such accident must prevent.
The content of the invention
In order to overcome above-mentioned technical problem, the present invention to provide a kind of voltage-stablizer self-protecting method.
The technical solution used in the present invention is：
A kind of voltage-stablizer self-protecting method, comprises the following steps：（A）Input voltage, input current, output electricity to voltage-stablizer
Pressure, output current are sampled；（B）Calculate whether input power is more than setting value with the difference of power output, if more than setting
Value then judges transformer turn-to-turn short circuit and cuts off voltage-stablizer output, otherwise into next step, wherein：Input power=input electricity
Pressure * input currents, power output=output voltage * output currents；（C）Judge whether output voltage is equal to transformer tapping ratio
Magnitude of voltage after corresponding transformation, if representing equal to if, pressure regulation is normal, otherwise judges pressure regulation failure and cuts off voltage-stablizer output；
（D）Delay cut-off is input into cutting off voltage-stablizer after step B is exported with step C cut-out voltage-stablizer.
Step D shows retransmit after failure code trigger in advance, defeated by trigger cut-out voltage-stablizer
Enter.
Step B is exchanged with step C order, you can is first judged whether pressure regulation failure, then is judged whether transformer turn-to-turn
Short circuit.
Magnitude of voltage in step C after transformation corresponding to transformer tapping ratio is when participating in judging plus load
The error voltage value for causing.
The voltage-stablizer self-protecting method also includes step（E）The load capacity of detection voltage-stablizer, to judge that voltage-stablizer is
Voltage-stablizer output is cut off in no overload, the time delay countdown if overload after the completion of countdown.
The voltage-stablizer self-protecting method also includes step（F）Whether detection transformer is overheated, cuts off steady if overheated
Depressor is exported.
The voltage-stablizer self-protecting method also includes step（G）Whether detection voltage-stablizer input voltage is normal, if input
Voltage does not then cut off voltage-stablizer output in setting range, starts high voltage protective or low-voltage variation.
The voltage-stablizer self-protecting method also includes step（H）Whether the output voltage of detection voltage-stablizer is abnormal, if different
It is normal then start alarm.
The invention has the beneficial effects as follows：
Whether normal, transformer temperature overheated, whether load surpasses except detecting input voltage range, output voltage for the present invention
Amount, pressure stabilizer can with according to input voltage, input current, output voltage, output current situation judging transformer
Whether damage with the presence or absence of turn-to-turn short circuit, relay, other components and parts of PCB it is whether bad with determine voltage-stablizer whether occur therefore
Barrier；When voltage-stablizer breaks down, automatically cut off input and avoid causing the accident and further damage voltage-stablizer itself, and keep event
Barrier guard mode.
Description of the drawings
The specific embodiment of the present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 is common voltage-stablizer defencive function schematic diagram；
Fig. 2 is voltage-stablizer defencive function schematic diagram of the present invention；
Fig. 3 is common voltage-stablizer operation principle schematic diagram；
Fig. 4 is voltage-stablizer operation principle schematic diagram of the present invention；
Fig. 5 is the software control flow chart of voltage-stablizer of the present invention；
The main body module circuit diagram of Fig. 6 voltage-stablizers of the present invention；
Fig. 7 is the circuit diagram of present invention cut-out input accessory plate.
Specific embodiment
As shown in Fig. 2 the novel belt self-protective mechanism voltage-stablizer applied for the present invention（Hereinafter referred to as pressure stabilizer）,
Not only with the defencive function of common voltage-stablizer in Fig. 1, self-protection function is also add：Relay error protection, PCB failures
Protection and transformer fault defencive function；
Pressure stabilizer of the present invention when detecting inside and breaking down, 1）All relays are discharged, input nature is from transformer
Highest tap is entered；2）Carry out buzzing alarming and display reminding；3）Start trigger after time delay, input of cutting off the electricity supply, to PCB
Power-off, isolation are carried out with transformer；4）Input is kept switched off state, and LED promptings need manual powered-down source switch again when restarting
Open.Voltage-stablizer accomplishes not accidents caused when no matter there is any significant trouble, safety and stability.
In order to be illustrated more clearly that the operation principle of the present invention, first compare with common voltage-stablizer, illustrate with reference to Fig. 3,
Through breaker, be input to mainboard PCB carries out pressure regulation to input voltage, and input is connected to into transformer according to input and output voltage
Suitable tap.Common voltage-stablizer is sentenced respectively by detection output voltage, transformer temperature, load capacity in output control
It is fixed whether to start output high pressure and low-voltage variation, transformer overtemperature protection, load excessive protection.
From unlike common voltage-stablizer, the cut-out input function of self-protection function is increased newly, with reference to Fig. 3, Fig. 4 explanation.
Input controlling unit is added in input, it is defeated to control electrical network according to input voltage, input current, output voltage and output current
Enter and whether be connected to PCB and transformer.
The pressure stabilizer that the present invention is applied is based primarily upon following principle when failure is detected：
1）The transformer tapping ratio of relay-type voltage stabilizer is fixed, i.e., tap settings magnitude of voltage is constant；
2）Voltage-stablizer pressure regulation action is also setting, then given input voltage become press out the corresponding voltage for obtaining be can
With what is set, once there is not corresponding voltage, it is possible to determine that pressure regulation link goes wrong；
3）Output voltage can be because the size of load has small variation；
4）Under normal circumstances, transformer power output is approximately equal to input power, if two power differences are excessive, it is possible to determine that become
Depressor inside turn-to-turn short circuit（Including tap short circuit）Failure；
The voltage-stablizer self-protecting method of the present invention is illustrated below in conjunction with Fig. 5, is comprised the following steps：（A）To the defeated of voltage-stablizer
Enter voltage, input current, output voltage, output current to be sampled；（B）Whether the difference of calculating input power and power output
More than setting value, judge transformer turn-to-turn short circuit if more than setting value and cut off voltage-stablizer output, otherwise into next step,
Wherein：Input power=input voltage * input currents, power output=output voltage * output currents；（C）Judge that output voltage is
The no magnitude of voltage equal to after transformation corresponding to transformer tapping ratio, if representing equal to if, pressure regulation is normal, otherwise judges pressure regulation event
Hinder and cut off voltage-stablizer output；（D）Delay cut-off is defeated to cut off voltage-stablizer after step B is exported with step C cut-out voltage-stablizer
Enter；Step（E）The load capacity of detection voltage-stablizer, to judge whether voltage-stablizer transships, the time delay countdown if overload, countdown is complete
Into rear cut-out voltage-stablizer output.The voltage-stablizer self-protecting method also includes step（F）Whether detection transformer is overheated, if mistake
Hot then cut-out voltage-stablizer output.The voltage-stablizer self-protecting method also includes step（G）Whether detection voltage-stablizer input voltage
Normally, if input voltage not in setting range if cut off voltage-stablizer output, start high voltage protective or low-voltage variation.The voltage stabilizing
Device self-protecting method also includes step（H）Whether the output voltage of detection voltage-stablizer is abnormal, and if abnormal alarm is started.
You need to add is that：Step D is shown retransmit after failure code trigger in advance, cut off by the trigger
Voltage-stablizer is input into.Step B is exchanged with step C order, you can is first judged whether pressure regulation failure, then is judged whether transformer circle
Between short circuit.Magnitude of voltage in step C after transformation corresponding to transformer tapping ratio is when participating in judging plus load
The error voltage value for causing.
Above-mentioned voltage-stablizer self-protecting method is all based on relay-type voltage stabilizer product, is broadly divided into the master such as Fig. 6
Plate, Fig. 7 are cut-out input accessory plate；Wherein, mainboard is divided into 11 parts.SE1, SE3, SE4 are sample circuit（Gather respectively and carry
For signals such as input current, input voltage, input voltages to main control chip）, used as cut-out input triggering port, SE5 is to adopt to SE2
Sample circuit provides canonical reference voltage, and SE6 is the drive circuit of voltage-stablizer cooling fan, and SE7 is buzzing alarming circuit, and SE8 is
Pressure regulation and the drive circuit of protective relay, SE9 is main control chip, and SE10 is mainboard power supply circuit, and SE11 is temperature inspection
Survey port.
1）Main control chip SE9 is adopted in real time to SE1, SE3, SE4, SE11, preserves real-time voltage electric current, temperature number
According to.
2）When output voltage exceeds the precision of voltage regulation, main control chip SE9 is by changing the drive signal combination of SE8 so as to produce
Different pressure regulation action, to reach the purpose of voltage stabilizing.
3）When main control chip SE9 detects high voltage protective, low-voltage variation, overload protection, temperature protection, main control chip SE9
By set low SE8 RL6 drive signal completing output protection.
4）When voltage-stablizer produces error protection, main control chip SE9 shows corresponding failure code by JP3, is entered by SE7
Row buzzing alarming, by SE2 triggering cut-out input circuits after time delay.
The work of cut-out input accessory plate, such as Fig. 7, during normal work, relay RL1 is in release conditions, two three poles
Pipe Q2, Q3 are in by off state, U1 optocoupler driving voltages（JP1）For 0V.What power supply was directly made up of electric capacity C1, R1
Capacitance-resistance voltage reduction circuit constitutes mu balanced circuit providing by triode Q1, voltage-stabiliser tube DZ1.
When voltage-stablizer breaks down, U1 conductings, Q2, Q3 conducting, cut-out input circuit is triggered and keeps, relay RL1
Input in attracting state, mainboard and transformer is cut off.Certainly, the cut-out input accessory plate is not limited only to the circuit of Fig. 7
Structure, as long as can realize that the circuit for cutting off output is all applied to the present invention, Fig. 7 is only as the embodiment of cut-out voltage-stablizer input.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to above-mentioned embodiment, as long as with
Essentially identical means realize that the technical scheme of the object of the invention is belonged within protection scope of the present invention.
Claims (8)
1. a kind of voltage-stablizer self-protecting method, it is characterised in that comprise the following steps：（A）It is input voltage to voltage-stablizer, defeated
Enter electric current, output voltage, output current to be sampled；（B）Whether the difference for calculating input power with power output is more than setting
Value, judges transformer turn-to-turn short circuit and cuts off voltage-stablizer output if more than setting value, otherwise into next step, wherein：It is defeated
Enter power=input voltage * input currents, power output=output voltage * output currents；（C）Judge whether output voltage is equal to become
Magnitude of voltage after transformation corresponding to depressor weight ratio, if representing equal to if, pressure regulation is normal, otherwise judges pressure regulation failure and cuts off
Voltage-stablizer is exported；（D）Delay cut-off is input into cutting off voltage-stablizer after step B is exported with step C cut-out voltage-stablizer.
2. a kind of voltage-stablizer self-protecting method according to claim 1, it is characterised in that：Step D shows in advance
Trigger is retransmited after failure code, voltage-stablizer input is cut off by the trigger.
3. a kind of voltage-stablizer self-protecting method according to claim 1, it is characterised in that：Step B is suitable with step C
Sequence is exchanged, you can is first judged whether pressure regulation failure, then is judged whether transformer turn-to-turn short circuit.
4. a kind of voltage-stablizer self-protecting method according to claim 1 or 3, it is characterised in that：Transformation in step C
The error voltage value that magnitude of voltage after transformation corresponding to device weight ratio causes when participating in and judging plus load.
5. according to a kind of arbitrary described voltage-stablizer self-protecting method of claim 1-3, it is characterised in that：It also includes step
（E）The load capacity of detection voltage-stablizer, to judge whether voltage-stablizer transships, the time delay countdown if overload is cut after the completion of countdown
Disconnected voltage-stablizer output.
6. a kind of voltage-stablizer self-protecting method according to claim 5, it is characterised in that：It also includes step（F）Inspection
Whether overheated survey transformer, voltage-stablizer output is cut off if overheated.
7. a kind of voltage-stablizer self-protecting method according to claim 6, it is characterised in that：It also includes step（G）Inspection
Whether normal survey voltage-stablizer input voltage, if input voltage not in setting range if cut off voltage-stablizer output, start high pressure and protect
Shield or low-voltage variation.
8. a kind of voltage-stablizer self-protecting method according to claim 7, it is characterised in that：It also includes step（H）Inspection
Whether the output voltage for surveying voltage-stablizer is abnormal, and if abnormal alarm is started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611200765.5A CN106602517A (en) | 2016-12-22 | 2016-12-22 | Voltage stabilizer self-protective method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611200765.5A CN106602517A (en) | 2016-12-22 | 2016-12-22 | Voltage stabilizer self-protective method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106602517A true CN106602517A (en) | 2017-04-26 |
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ID=58602860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611200765.5A Pending CN106602517A (en) | 2016-12-22 | 2016-12-22 | Voltage stabilizer self-protective method |
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| Country | Link |
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| CN (1) | CN106602517A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112134261A (en) * | 2020-08-27 | 2020-12-25 | 上海沪工焊接集团股份有限公司 | Continuous overload protection and power device cooling control method |
| CN114442515A (en) * | 2021-10-14 | 2022-05-06 | 创泽智能机器人集团股份有限公司 | Power supply control device of robot |
| CN116500369A (en) * | 2023-06-28 | 2023-07-28 | 深圳安森德半导体有限公司 | Differential voltage detection method for DCDC voltage stabilizer |
| CN116754872A (en) * | 2023-06-19 | 2023-09-15 | 深圳市亿宾微电子有限公司 | Voltage stabilizer testing method, intelligent terminal and storage medium |
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| CN202285321U (en) * | 2011-10-20 | 2012-06-27 | 浙江正泰电源电器有限公司 | Output and input dual-protection system structure of alternating current voltage stabilizer |
| CN102570410A (en) * | 2010-12-07 | 2012-07-11 | 三信国际电器上海有限公司 | Electronic voltage stabilizer |
| CN103063974A (en) * | 2012-12-25 | 2013-04-24 | 广州供电局有限公司 | On-line monitoring method and device of distribution transformer turn-to-turn short circuit |
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2016
- 2016-12-22 CN CN201611200765.5A patent/CN106602517A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570410A (en) * | 2010-12-07 | 2012-07-11 | 三信国际电器上海有限公司 | Electronic voltage stabilizer |
| CN202285321U (en) * | 2011-10-20 | 2012-06-27 | 浙江正泰电源电器有限公司 | Output and input dual-protection system structure of alternating current voltage stabilizer |
| CN103063974A (en) * | 2012-12-25 | 2013-04-24 | 广州供电局有限公司 | On-line monitoring method and device of distribution transformer turn-to-turn short circuit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112134261A (en) * | 2020-08-27 | 2020-12-25 | 上海沪工焊接集团股份有限公司 | Continuous overload protection and power device cooling control method |
| CN114442515A (en) * | 2021-10-14 | 2022-05-06 | 创泽智能机器人集团股份有限公司 | Power supply control device of robot |
| CN116754872A (en) * | 2023-06-19 | 2023-09-15 | 深圳市亿宾微电子有限公司 | Voltage stabilizer testing method, intelligent terminal and storage medium |
| CN116500369A (en) * | 2023-06-28 | 2023-07-28 | 深圳安森德半导体有限公司 | Differential voltage detection method for DCDC voltage stabilizer |
| CN116500369B (en) * | 2023-06-28 | 2023-09-15 | 深圳安森德半导体有限公司 | DCDC voltage stabilizer voltage detection method |
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Application publication date: 20170426 |