CN108155622A - A kind of overvoltage/undervoltage protective device for electric system - Google Patents
A kind of overvoltage/undervoltage protective device for electric system Download PDFInfo
- Publication number
- CN108155622A CN108155622A CN201810067860.5A CN201810067860A CN108155622A CN 108155622 A CN108155622 A CN 108155622A CN 201810067860 A CN201810067860 A CN 201810067860A CN 108155622 A CN108155622 A CN 108155622A
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- CN
- China
- Prior art keywords
- overvoltage
- voltage
- module
- relay
- undervoltage
- 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.)
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- 230000001681 protective effect Effects 0.000 title claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 16
- 230000000875 corresponding effect Effects 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 230000001934 delay Effects 0.000 claims description 5
- 230000037361 pathway Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000012806 monitoring device Methods 0.000 abstract description 3
- 238000012790 confirmation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/207—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage also responsive to under-voltage
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention provides a kind of overvoltage/undervoltage protective devices for electric system, and to solve the problems, such as that overvoltage/undervoltage device of the prior art needs artificial scene to confirm that the contact of relay is opened and is closed, this overvoltage/undervoltage device includes：Power module, for line voltage to be converted to predeterminated voltage；Trigger circuit module, for carrying out judging whether to send corresponding trigger signal according to the line voltage of input；Logic processing module for the predeterminated voltage power supply converted by power module, receives the trigger signal that trigger circuit module is sent, and send control relay corresponding actions signal according to trigger signal；Many-contact relay connects logic processing module, for providing contact unlatching and closed state to logic processing module.Overvoltage/undervoltage device using the present invention can judge the break-make of relay by many-contact relay and outer remote monitoring device, improve the detection efficiency of overvoltage/undervoltage device.
Description
Technical field
The present invention relates to overvoltage/undervoltage protective device fields more particularly to a kind of overvoltage/undervoltage for electric system to protect dress
It puts.
Background technology
In general, the voltage in supply line is not a steady state value, may accordingly be generated due to the variation of load
Fluctuation.This voltage fluctuation (such as under-voltage or over-pressed) in supply line once beyond the range that electrical equipment can bear,
Detrimental effect will be brought to electrical equipment, even cause the damage of electrical equipment.Therefore, generally use under-voltage protection or mistake
Pressure protective device ensures that electrical equipment uses under normal power supply state, overvoltage/undervoltage device can control relay disconnect or
Person is attracted, so as to control the break-make of bulk power grid.
The user of electric system is installed at present, when electric system, which is broken down, is overhauled to power supply bureau, it is necessary to first
Two confirmations are carried out, first, whether electric current is 0, second is that whether physics disconnects power generation circuit, the behaviour that carry out the step every time
Make, operating procedure is more numerous and diverse.Therefore it needs to design a kind of equipment for the break-make that directly can remotely judge relay.
Invention content
In order to solve problem of the prior art, the present invention provides a kind of overvoltage/undervoltage protective device for electric system,
The function that external monitoring relay is disconnected and is attracted can be realized by the overvoltage/undervoltage device, artificial scene is reduced and confirms because of mistake
The complex steps that under-voltage relay is disconnected and is attracted improve user experience.
To achieve these goals, the present invention uses following technical scheme：
A kind of overvoltage/undervoltage protective device for electric system, including
Power module, for line voltage to be converted to predeterminated voltage；
Trigger circuit module, for carrying out judging whether to send corresponding trigger signal according to the line voltage of input；
Logic processing module for the predeterminated voltage power supply converted by power module, receives trigger circuit module and sends
Trigger signal, and according to trigger signal send control relay corresponding actions signal；
Many-contact relay connects logic processing module, for providing contact unlatching and closed form to logic processing module
State.
Further, the trigger circuit module includes：
Over-pressed trigger circuit, for when the line voltage of input is more than predetermined voltage range value, sending overvoltage triggering letter
Number；
Under-voltage trigger circuit, for when the line voltage of input is less than predetermined voltage range value, sending under-voltage triggering letter
Number.
Further, the logic processing module includes：
Delays time to control module, for when receiving the trigger signal that trigger circuit module is sent, being carried out by operational amplifier circuit
Delays time to control sending filter corresponding actions signal.
Further, the many-contact relay includes：
Main contacts is closed when being powered for coil and connects city's electric pathway；
Auxiliary contact are closed when being powered for coil and connect connection external circuit detection circuit；
Interlocking lever, one end connection main contacts of the interlocking lever, the other end connection auxiliary contact of the interlocking lever.
Further, the interlocking lever is insulating bar.
The beneficial effects of the invention are as follows：By using many-contact relay, realize that this overvoltage/undervoltage protective device can be external
The function that relay is disconnected and is attracted is detected, so as to when electric system is overhauled by power supply bureau, be obtained by remote data
To relay overvoltage/undervoltage disconnection, effectively reduce artificial scene and confirm cost.
Description of the drawings
Fig. 1 is the overvoltage/undervoltage protective device the general frame of this electric system；
Fig. 2 is the many-contact relay block diagram of the overvoltage/undervoltage protective device of this electric system.
Specific embodiment
The following is specific embodiments of the present invention and with reference to attached drawing, technical scheme of the present invention is further described,
But the present invention is not limited to these embodiments.
Embodiment
A kind of overvoltage/undervoltage protective device for electric system is present embodiments provided, as shown in Figure 1 to Figure 2, this is excessively deficient
Protective device is pressed, including：
Power module, for line voltage to be converted to predeterminated voltage；
Trigger circuit module, for carrying out judging whether to send corresponding trigger signal according to the line voltage of input；
Logic processing module for the predeterminated voltage power supply converted by power module, receives trigger circuit module and sends
Trigger signal, and according to trigger signal send control relay corresponding actions signal；
Many-contact relay connects logic processing module, for providing contact unlatching and closed form to logic processing module
State.
Further, the trigger circuit module includes：
Over-pressed trigger circuit, for when the line voltage of input is more than predetermined voltage range value, sending overvoltage triggering letter
Number；
Under-voltage trigger circuit, for when the line voltage of input is less than predetermined voltage range value, sending under-voltage triggering letter
Number.
Further, the logic processing module includes：
Delays time to control module, for when receiving the trigger signal that trigger circuit module is sent, being carried out by operational amplifier circuit
Delays time to control sending filter corresponding actions signal.
Alternating current is by giving entire circuit to provide operating voltage, over-pressed trigger circuit and under-voltage trigger circuit meeting after power supply transformation
Predetermined threshold value is provided, when input voltage is more than or is over-pressed trigger circuit less than corresponding circuit voltage threshold range
With the logical process chip for triggering logic processing circuit for a moment of under-voltage trigger circuit, the amplifying circuit meeting in logical process chip
It carries out delaying control many-contact relay closure or disconnect, and then control the break-make of power grid.
Further, the many-contact relay includes：
Main contacts is closed when being powered for coil and connects city's electric pathway；
Auxiliary contact are closed external circuit detection circuit when being powered for coil；
Interlocking lever, one end connection main contacts of the interlocking lever, the other end connection auxiliary contact of the interlocking lever.
Further, the interlocking lever is insulating bar.
The main contacts of above-mentioned many-contact relay is city's electric pathway, and auxiliary contact are signal paths, and main contacts and auxiliary are touched
Electric insulation between point, when relay coil is powered, main contacts and auxiliary contact are attracted simultaneously, and external monitoring devices can lead to
The disconnection for obtaining auxiliary contact and attracting state are crossed to judge the attracting state of main contacts.
When the electric system of installation is broken down, power supply bureau is not come when being overhauled, user needs to whether carry out electric current
Whether it is the confirmation that disconnects for 0 and power generation circuit, power supply bureau can know main contacts break-make situation by examining auxiliary contact,
And state can be sent to background server, it is effectively reduced the cost for thinking scene confirmation.
A kind of overvoltage/undervoltage protective device for electric system provided in this embodiment, in traditional overvoltage/undervoltage protective device
Upper selection many-contact relay, actuation and off-state by the auxiliary contact indirect reaction main contacts of many-contact relay,
I.e. external monitoring devices judge the break-make of main contacts by obtaining the break-make of auxiliary contact, increase working efficiency, improve
User experience.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (5)
1. a kind of overvoltage/undervoltage protective device for electric system, which is characterized in that including
Power module, for line voltage to be converted to predeterminated voltage；
Trigger circuit module, for carrying out judging whether to send corresponding trigger signal according to the line voltage of input；
Logic processing module for the predeterminated voltage power supply converted by power module, receives touching for trigger circuit module transmission
It signals, and control relay corresponding actions signal is sent according to trigger signal；
Many-contact relay connects logic processing module, for providing contact unlatching and closed state to logic processing module.
A kind of 2. overvoltage/undervoltage protective device for electric system according to claim 1, which is characterized in that the triggering
Circuit module includes：
Over-pressed trigger circuit, for when the line voltage of input is more than predetermined voltage range value, sending over-pressed trigger signal；
Under-voltage trigger circuit, for when the line voltage of input is less than predetermined voltage range value, sending under-voltage trigger signal.
A kind of 3. overvoltage/undervoltage protective device for electric system according to claim 1, which is characterized in that the logic
Processing module includes：
Delays time to control module, for when receiving the trigger signal that trigger circuit module is sent, by operational amplifier circuit into line delay
Control sending filter corresponding actions signal.
4. a kind of overvoltage/undervoltage protective device for electric system according to claim 1, which is characterized in that described more to touch
Point relay includes：
Main contacts is closed when being powered for coil and connects city's electric pathway；
Auxiliary contact are closed when being powered for coil and connect external circuit detection circuit；
Interlocking lever, one end connection main contacts of the interlocking lever, the other end connection auxiliary contact of the interlocking lever.
A kind of 5. overvoltage/undervoltage protective device for electric system according to claim 4, which is characterized in that the gearing
Bar is insulating bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810067860.5A CN108155622A (en) | 2018-01-24 | 2018-01-24 | A kind of overvoltage/undervoltage protective device for electric system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810067860.5A CN108155622A (en) | 2018-01-24 | 2018-01-24 | A kind of overvoltage/undervoltage protective device for electric system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108155622A true CN108155622A (en) | 2018-06-12 |
Family
ID=62458889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810067860.5A Pending CN108155622A (en) | 2018-01-24 | 2018-01-24 | A kind of overvoltage/undervoltage protective device for electric system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108155622A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382251A (en) * | 2020-12-01 | 2021-02-19 | 深圳市华星光电半导体显示技术有限公司 | Time sequence control drive board, display panel and display device |
| CN112838615A (en) * | 2021-01-05 | 2021-05-25 | 中国神华能源股份有限公司国华电力分公司 | Control system for splitting generator set |
Citations (8)
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|---|---|---|---|---|
| US20050243491A1 (en) * | 2004-04-28 | 2005-11-03 | James Tanis | Multi-function power monitor and circuit protector |
| EP2482085A1 (en) * | 2011-01-31 | 2012-08-01 | Electronic Systems Protection, Inc. | Supply voltage monitor |
| CN102761095A (en) * | 2011-04-28 | 2012-10-31 | 西门子公司 | Device and method for undervoltage-overvoltage protection |
| JP2012254008A (en) * | 2011-05-31 | 2012-12-20 | Sensata Technologies Inc | Power generator module connectivity control |
| CN203658545U (en) * | 2013-12-31 | 2014-06-18 | 施耐德电器工业公司 | Contact fault detecting and indicating device for heavy current protection/control switch |
| CN203774770U (en) * | 2014-02-13 | 2014-08-13 | 施耐德电器工业公司 | Circuit breaker with overvoltage and undervoltage protective module |
| CN105449633A (en) * | 2015-11-11 | 2016-03-30 | 绵阳市维博电子有限责任公司 | Over/under voltage protection system of electrical equipment |
| CN207719792U (en) * | 2018-01-24 | 2018-08-10 | 宁波大家小家网络科技有限公司 | A kind of overvoltage/undervoltage protective device for electric system |
-
2018
- 2018-01-24 CN CN201810067860.5A patent/CN108155622A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050243491A1 (en) * | 2004-04-28 | 2005-11-03 | James Tanis | Multi-function power monitor and circuit protector |
| EP2482085A1 (en) * | 2011-01-31 | 2012-08-01 | Electronic Systems Protection, Inc. | Supply voltage monitor |
| CN102761095A (en) * | 2011-04-28 | 2012-10-31 | 西门子公司 | Device and method for undervoltage-overvoltage protection |
| JP2012254008A (en) * | 2011-05-31 | 2012-12-20 | Sensata Technologies Inc | Power generator module connectivity control |
| CN203658545U (en) * | 2013-12-31 | 2014-06-18 | 施耐德电器工业公司 | Contact fault detecting and indicating device for heavy current protection/control switch |
| CN203774770U (en) * | 2014-02-13 | 2014-08-13 | 施耐德电器工业公司 | Circuit breaker with overvoltage and undervoltage protective module |
| CN105449633A (en) * | 2015-11-11 | 2016-03-30 | 绵阳市维博电子有限责任公司 | Over/under voltage protection system of electrical equipment |
| CN207719792U (en) * | 2018-01-24 | 2018-08-10 | 宁波大家小家网络科技有限公司 | A kind of overvoltage/undervoltage protective device for electric system |
Non-Patent Citations (1)
| Title |
|---|
| 广东省电力试验研究所: "发电厂和变电站电气二次回路技术", 西南交通大学出版社, pages: 163 - 164 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382251A (en) * | 2020-12-01 | 2021-02-19 | 深圳市华星光电半导体显示技术有限公司 | Time sequence control drive board, display panel and display device |
| CN112838615A (en) * | 2021-01-05 | 2021-05-25 | 中国神华能源股份有限公司国华电力分公司 | Control system for splitting generator set |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180612 |