CN101420114A - Multifunctional three phase power source protector - Google Patents
Multifunctional three phase power source protector Download PDFInfo
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- CN101420114A CN101420114A CNA2008101363257A CN200810136325A CN101420114A CN 101420114 A CN101420114 A CN 101420114A CN A2008101363257 A CNA2008101363257 A CN A2008101363257A CN 200810136325 A CN200810136325 A CN 200810136325A CN 101420114 A CN101420114 A CN 101420114A
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- 230000005611 electricity Effects 0.000 claims abstract description 14
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- 230000009471 action Effects 0.000 claims description 8
- 230000000007 visual effect Effects 0.000 claims description 5
- 238000013024 troubleshooting Methods 0.000 claims 1
- 230000004224 protection Effects 0.000 abstract description 20
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Abstract
The invention provides a three-phase power supply protector, which comprises a single chip, a voltage detecting module, an output module and a power supply module, wherein, the voltage detecting module is used for converting three-phase current outputted by a three-phase alternating current power supply into low voltage current to be inputted to the single chip; the three-phase alternating current power supply is used for supplying electricity for a three-phase electric appliance; the output module comprises a switching element interfaced with the single chip, when failures are detected, the single chip cuts a feed circuit between the three-phase alternating current power supply and the three-phase electric appliance; the power supply module is used for supplying electricity for the single chip, the voltage detecting module and the output module after converting alternating current commercial electricity into low-voltage direct current electricity; the single chip is used for carrying out A/D conversion on an inputted low-voltage signal to receive a three-phase voltage value corresponding to the three-phase alternating current power supply, and checking overvoltage and undervoltage failures, default-phase and three-phase imbalance failures and misphase failures of the three-phase alternating current power supply according to the three-phase voltage value. The invention is the upgrade and integration product for the functions of a traditional potential relay and a phase sequence relay so as to improve the precision of overvoltage and undervoltage protection, and reduce cost, electricity consumption and space occupation.
Description
Technical field
The present invention relates to a kind of low-voltage electric elements, particularly a kind of multifunctional three phase power source protector.
Technical background
In the low-voltage electrical control system, overtension protection, brownout protection (this is collectively referred to as the overvoltage/undervoltage protection below two), open-phase protection, phase sequence and three-phase imbalance protection are common monitoring and defencive functions for three-phase alternating-current supply.These functions generally use traditional low voltage component such as voltage relay and phase sequence relay to realize, as, voltage relay is used for the overvoltage/undervoltage protection, and phase sequence relay is used for phase shortage, phase sequence.The shortcoming of the low voltage component that these are traditional is that protection low precision, volume need two elements could realize above-mentioned common function greatly, at least, and the Installation and Debugging complexity.
At present known a kind of detection and defencive function of having gathered above-mentioned common three-phase current power supply arranged is the product of one, but its operation principle and traditional voltage relay, phase sequence relay are similar, the not improvement of essence on performance.For example, the set point of overvoltage/undervoltage protection is to adjust with potentiometer, because the restriction of the structural principle of potentiometer, the accuracy of set point and the linearity are all poor, also can be because of reason accidental changes such as vibrations; Simultaneously because there is not function displaying voltage, validity that can not visual test overvoltage/undervoltage protection action; In addition, all kinds of protection action delay are based on the capacitor charge and discharge principle, low precision and bigger temperature coefficient (being that ambient temperature can influence delay time) is arranged, and delay time is fixing non-adjustable, is difficult to adapt to various environment for use.
Summary of the invention
The object of the present invention is to provide a kind of multifunctional three phase power source protector that overvoltage/undervoltage protection, open-phase protection, phase sequence and three-phase imbalance are protected in one that collects.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of multifunctional three phase power source protector, it comprises single-chip microcomputer; Voltage detection module, the three-phase alternating current that voltage detection module is exported three-phase alternating-current supply converts low tension to and inputs to single-chip microcomputer, and three-phase alternating-current supply is used for powering to the three-phase electricity power consumption equipment; Output module, output module comprise the switching device with interface microcontroller, and when detecting fault, single-chip microcomputer is by the power supply circuits between output module cut-out three-phase alternating-current supply and the three-phase electricity power consumption equipment; Power module, power module are used for electric main is converted to and are single-chip microcomputer, voltage detection module and output module power supply behind the low-voltage DC; Single-chip microcomputer is used for the low voltage signal of input is carried out the A/D conversion and obtains the pairing three-phase voltage value of three-phase alternating-current supply, and checks overvoltage/undervoltage fault, phase shortage and three-phase imbalance fault, the misphase fault of three-phase alternating-current supply according to the three-phase voltage value.
Because the employing of technique scheme, the present invention compared with prior art has the following advantages:
The present invention uses singlechip technology, and the function of traditional voltage relay, phase sequence relay is upgraded and integrated, has improved the precision of overvoltage/undervoltage protection greatly, has reduced cost, power consumption simultaneously and takes up room.
Description of drawings
Fig. 1 is a theory diagram of the present invention;
Wherein: 1, voltage detection module; 2, keyboard input module; 3, display module; 4, power module; 5, output module; 7, three-phase alternating-current supply; 9, three-phase electricity power consumption equipment.
Embodiment
Multifunctional three phase power source protector as shown in Figure 1 comprises single-chip microcomputer 6; Voltage detection module 1, the three-phase alternating current that voltage detection module 1 is exported three-phase alternating-current supply 7 converts low tension to and inputs to single-chip microcomputer 6, and three-phase alternating-current supply 7 is used for to 9 power supplies of three-phase electricity power consumption equipment; Output module 5, output module 5 comprises the switching device with single-chip microcomputer 6 interfaces, when detecting fault, the power supply circuits that single-chip microcomputer 6 cuts off between three-phase alternating-current supply 7 and the three-phase electricity power consumption equipment 9 by output module 5; Power module 4, power module 4 are used for electric main is converted to and are single-chip microcomputer 6, voltage detection module 1 and output module 5 power supplies behind the low-voltage DC.Wherein, single-chip microcomputer 6 is used for the low voltage signal of input is carried out the A/D conversion and obtains three-phase alternating-current supply 7 pairing three-phase voltage values, in addition, single-chip microcomputer 6 also has following function: the overvoltage/undervoltage fault of checking three-phase alternating-current supply 7 by comparison three-phase voltage value and the overvoltage/undervoltage threshold value that is preset in single-chip microcomputer 6 inside; Check the overvoltage/undervoltage fault of three-phase alternating-current supply 7 by the difference between the comparison three-phase voltage value; By the three-phase voltage value being carried out obtain after the operational analysis phase difference between the three-phase voltage value, and check the misphase fault of three-phase alternating-current supply 7 successively.
Multifunctional three phase power source protector shown in Figure 1 also comprises the display module 3 that is connected with single-chip microcomputer 6; display module 3 is according to the instruction of single-chip microcomputer 6; at least one in the two of display text, image information; as; single-chip microcomputer 6 drives display module 3 and shows that the handled easily person reads the current magnitude of voltage that is loaded into the three-phase alternating-current supply 7 on the three-phase electricity power consumption equipment through three-phase alternating-current supply 7 pairing three-phase voltage values after the A/D conversion.
Multifunctional three phase power source protector also comprises the keyboard input module 2 that is connected with single-chip microcomputer 6, and the operator passes through keyboard input module 2 to single-chip microcomputer 6 input control signals.Display module 3 and keyboard input module 2 constitute the oriented manipulation person's of three phase electric power protector operation interface.Action delay parameter and overvoltage/undervoltage threshold value that the operator checks to single-chip microcomputer 6 input various faults by keyboard input module 2; make the action delay of various error protections of single-chip microcomputer 6 freely to be provided with and to adjust by operator (user); and; the overvoltage/undervoltage threshold value also can manually be provided with, and makes the scope of application of the present invention more extensive.
Operation principle of the present invention is as follows: voltage detection module 1 becomes suitable low-voltage to send into single-chip microcomputer 6 voltage transformation of three-phase alternating-current supply 7,6 pairs of voltage signals of single-chip microcomputer carry out obtaining three-phase alternating-current supply 7 pairing three-phase voltage values after A/D changes the row operation of going forward side by side, and by display module 3 this three-phase voltage value are shown.The in house software of single-chip microcomputer 6 compares by the overvoltage/undervoltage threshold parameter with detected three-phase voltage value and internal preset, has judged whether the overvoltage/undervoltage fault; By the difference between the more detected three-phase voltage value, judge whether to exist phase shortage or three-phase imbalance fault; By operational analysis, can obtain the phase difference between the three-phase voltage, thereby can judge whether to exist misphase fault (phase sequence function) three-phase voltage value instantaneous value.When detecting fault such as above-mentioned overvoltage/undervoltage, phase shortage, three-phase imbalance, misphase, single-chip microcomputer 6 drives that output modules 5 send sound, light is reported to the police and disconnect three-phase electricity power consumption equipment power supply, reaches the purpose of protection load.Simultaneously, for above-mentioned various error protections, its action delay can freely be adjusted respectively by the user.The action delay parameter of various error protections and above-mentioned overvoltage/undervoltage threshold parameter are provided with by the operation interface that is made of keyboard input module 2 and display module 3.
The present invention uses singlechip technology, and the function of traditional voltage relay, phase sequence relay is upgraded and integrated: increase function displaying voltage, improved the overvoltage/undervoltage protection precision, the simple, intuitive that is provided with of the action delay of various protections, various parameters can freely be set.Reduced cost, power consumption simultaneously and taken up room.
Claims (9)
1, a kind of multifunctional three phase power source protector, it is characterized in that: it comprises
Single-chip microcomputer (6);
Voltage detection module (1), the three-phase alternating current that described voltage detection module (1) is exported three-phase alternating-current supply (7) converts low tension to and inputs to described single-chip microcomputer (6), and described three-phase alternating-current supply (7) is used for powering to three-phase electricity power consumption equipment (9);
Output module (5), described output module (5) comprises the switching device with described single-chip microcomputer (6) interface, when detecting fault, described single-chip microcomputer (6) cuts off power supply circuits between described three-phase alternating-current supply (7) and the three-phase electricity power consumption equipment (9) by described output module (5);
Power module (4), described power module (4) are used for electric main is converted to behind the low-voltage DC powers for described single-chip microcomputer (6), voltage detection module (1) and output module (5);
Described single-chip microcomputer (6) is used for the low voltage signal of input is carried out the A/D conversion and obtains the pairing three-phase voltage value of described three-phase alternating-current supply (7), and checks overvoltage/undervoltage fault, phase shortage and three-phase imbalance fault, the misphase fault of described three-phase alternating-current supply (7) according to described three-phase voltage value.
2, multifunctional three phase power source protector according to claim 1 is characterized in that: described single-chip microcomputer (6) is checked the overvoltage/undervoltage fault of described three-phase alternating-current supply (7) by the more described three-phase voltage value overvoltage/undervoltage threshold value inner with being preset in described single-chip microcomputer (6).
3, multifunctional three phase power source protector according to claim 1 is characterized in that: described single-chip microcomputer (6) is checked the phase shortage and the three-phase imbalance fault of described three-phase alternating-current supply (7) by the difference between the more described three-phase voltage value.
4, multifunctional three phase power source protector according to claim 1; it is characterized in that: described single-chip microcomputer (6) is by carrying out obtaining after the operational analysis phase difference between the described three-phase voltage value to described three-phase voltage value, and checks the misphase fault of described three-phase alternating-current supply (7) according to this.
5, multifunctional three phase power source protector according to claim 1; it is characterized in that: it also comprises the display module (3) that is connected with described single-chip microcomputer (6); described display module (3) is according to the instruction of described single-chip microcomputer (6), at least one in the two of display text, image information.
6, multifunctional three phase power source protector according to claim 5 is characterized in that: described single-chip microcomputer (6) drives described display module (3) and shows through the pairing described three-phase voltage value of described three-phase alternating-current supply (7) after the A/D conversion.
7, multifunctional three phase power source protector according to claim 1; it is characterized in that: it also comprises the keyboard input module (2) that is connected with described single-chip microcomputer (6), and the operator passes through described keyboard input module (2) to described single-chip microcomputer (6) input control signal.
8, multifunctional three phase power source protector according to claim 7 is characterized in that: the operator is by action delay parameter and the described overvoltage/undervoltage threshold value of described keyboard input module (2) to the multiple described trouble shooting of described single-chip microcomputer (6) input.
9, multifunctional three phase power source protector according to claim 1; it is characterized in that: described output module (5) also comprises the warning device that can send sound, visual alarm; when described single-chip microcomputer (6) when detecting fault, control described output module (5) and send sound, visual alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101363257A CN101420114A (en) | 2008-11-26 | 2008-11-26 | Multifunctional three phase power source protector |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101363257A CN101420114A (en) | 2008-11-26 | 2008-11-26 | Multifunctional three phase power source protector |
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| CN101420114A true CN101420114A (en) | 2009-04-29 |
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| CNA2008101363257A Pending CN101420114A (en) | 2008-11-26 | 2008-11-26 | Multifunctional three phase power source protector |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102576042A (en) * | 2009-07-27 | 2012-07-11 | Rwe股份公司 | Device and method for providing a quantity of energy in a supply device to a consumer |
| CN103823197A (en) * | 2012-11-16 | 2014-05-28 | 哈尔滨飞机工业集团有限责任公司 | Power supply protector tester |
| CN104967105A (en) * | 2015-07-15 | 2015-10-07 | 苏州创泰电子有限公司 | Single LED data display power supply protector and display control method thereof |
| CN107717716A (en) * | 2017-11-16 | 2018-02-23 | 刘永红 | A kind of high jewel grinding-forming machine of precision |
| CN107860964A (en) * | 2017-11-30 | 2018-03-30 | 杭州凯尔达电焊机有限公司 | Three-phase electricity based on crest voltage detection is over-pressed, under-voltage, phase shortage warning circuit |
| CN108880219A (en) * | 2018-06-27 | 2018-11-23 | 北京金风科创风电设备有限公司 | Circuit protection device and pitch control system |
| CN109861174A (en) * | 2019-03-05 | 2019-06-07 | 温州宝翔科技有限公司 | A three-phase motor voltage monitor |
| CN115981186A (en) * | 2022-09-19 | 2023-04-18 | 托菲传感技术(上海)股份有限公司 | A control system and method for a three-phase voltage monitoring relay |
-
2008
- 2008-11-26 CN CNA2008101363257A patent/CN101420114A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102576042A (en) * | 2009-07-27 | 2012-07-11 | Rwe股份公司 | Device and method for providing a quantity of energy in a supply device to a consumer |
| CN102576042B (en) * | 2009-07-27 | 2015-11-25 | Rwe股份公司 | Device and method for providing a quantity of energy in a supply device to a consumer |
| US9783071B2 (en) | 2009-07-27 | 2017-10-10 | Innogy Se | Device and method for providing a quantity of energy in said supply device for consumer |
| CN103823197A (en) * | 2012-11-16 | 2014-05-28 | 哈尔滨飞机工业集团有限责任公司 | Power supply protector tester |
| CN104967105A (en) * | 2015-07-15 | 2015-10-07 | 苏州创泰电子有限公司 | Single LED data display power supply protector and display control method thereof |
| CN107717716A (en) * | 2017-11-16 | 2018-02-23 | 刘永红 | A kind of high jewel grinding-forming machine of precision |
| CN107860964A (en) * | 2017-11-30 | 2018-03-30 | 杭州凯尔达电焊机有限公司 | Three-phase electricity based on crest voltage detection is over-pressed, under-voltage, phase shortage warning circuit |
| CN107860964B (en) * | 2017-11-30 | 2024-03-19 | 杭州凯尔达电焊机有限公司 | Three-phase overvoltage, undervoltage and open-phase alarm circuit based on peak voltage detection |
| CN108880219A (en) * | 2018-06-27 | 2018-11-23 | 北京金风科创风电设备有限公司 | Circuit protection device and pitch control system |
| CN109861174A (en) * | 2019-03-05 | 2019-06-07 | 温州宝翔科技有限公司 | A three-phase motor voltage monitor |
| CN115981186A (en) * | 2022-09-19 | 2023-04-18 | 托菲传感技术(上海)股份有限公司 | A control system and method for a three-phase voltage monitoring relay |
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Open date: 20090429 |