CN202930910U - Multifunctional protection module used for active power filter - Google Patents
Multifunctional protection module used for active power filter Download PDFInfo
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- CN202930910U CN202930910U CN 201220687141 CN201220687141U CN202930910U CN 202930910 U CN202930910 U CN 202930910U CN 201220687141 CN201220687141 CN 201220687141 CN 201220687141 U CN201220687141 U CN 201220687141U CN 202930910 U CN202930910 U CN 202930910U
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- active power
- power filter
- protection module
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Abstract
The utility model discloses a multifunctional protection module used for an active power filter. With a microprocessor being a core, the multifunctional protection module mainly comprises the microprocessor, an analog quantity signal input module and a remote signaling signal module. The analog quantity signal input module is connected with an analog-to-digital converter and then is connected to the microprocessor. The remote signaling signal module is connected to a remote signaling input interface and then is connected to the microprocessor. The microprocessor is connected with a communication interface and a relay output interface. The multifunctional protection module has functions of protection against over-current, over-voltage, under-voltage, over-temperature, fan over-current, abnormal fan rotating speed and the like for an apparatus. Once an abnormal even is monitored to occur, the relay output interface is immediately utilized by the multifunctional protection module to drive trip-out of an external breaker, connection between the active power filter and a power distribution network is cut off, and the communication interface is utilized to upload the abnormal event to a remote monitoring system.
Description
Technical field
The utility model belongs to the electric-power filter technical field, relates in particular to a kind of multifunction protection module for Active Power Filter-APF.
Background technology
Adopting Active Power Filter-APF is administer Harmonious Waves in Power Systems and improve one of effective measures of the quality of power supply.Compare with traditional passive filter, Active Power Filter-APF has the characteristics such as harmonic wave of compensation each harmonic, inhibition flickering, compensating reactive power, automatic tracking and compensating variation.Active Power Filter-APF is mainly used in load side has a large amount of nonlinear-loads to cause the occasion of power system voltage and the serious distortion of electric current, and its major function is to eliminate the harmonic component of power system voltage and electric current, keeps the fundametal compoment of voltage and current.At present, Active Power Filter-APF has become the focus of power electronic technology research, many countries with Active Power Filter-APF as the key technology of improving the quality of power supply and measure.
Along with Active Power Filter-APF extensive application at home, cause the problem of equipment fault also to manifest gradually because himself defencive function is not enough.Although Active Power Filter-APF just is designed with multi-protective function at the beginning of design, can in case its controller breaks down, every defencive function just can't play a role.Therefore, protect equipment to provide protection to Active Power Filter-APF in the urgent need to a kind of simple, reliable third party.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of multifunction protection module that is used for simply, reliably Active Power Filter-APF, the Active Power Filter-APF third party is protected the demand of equipment to satisfy prior art.
For solving the problems of the technologies described above; the utility model adopts following technical scheme: the multifunction protection module that is used for Active Power Filter-APF; take microprocessor as core; mainly comprise microprocessor, analog signals input module and remote signals module; the analog signals input module is connected to analog to digital converter and accesses microprocessor again; the remote signals module is connected to the remote signalling input interface and accesses microprocessor again, and microprocessor is connected with the relay output interface with communication interface.
Analog signals input module input system voltage signal, device output current signal, fan electrical current signal and temperature sensor signal.
The pulse of remote signalling input interface input rotation speed of the fan, temperature protection switch signal and other remote signalling.
Present situation for Active Power Filter-APF third party protection equipment shortage; the inventor has designed the multifunction protection module for Active Power Filter-APF of the present utility model; it mainly comprises microprocessor, analog signals input module and remote signals module take microprocessor as core.This multifunction protection module has the defencive functions such as device overcurrent, overvoltage, under-voltage, excess temperature, fan overcurrent, rotation speed of the fan be abnormal.Occur in case monitor anomalous event, the multifunction protection module can use the relay output interface to drive outside circuit breaker trip, and the cut-out Active Power Filter-APF is connected with power distribution network, uses simultaneously communication interface that anomalous event is uploaded to remote monitoring system.
Description of drawings
Fig. 1 is the structural representation that the utility model is used for the multifunction protection module of Active Power Filter-APF, in figure: 1 analog signals input module, 2 analog to digital converters; 3 microprocessors, 4 remote signals modules, 5 remote signalling input interfaces; 6 communication interfaces, 7 relay output interfaces, 11 system voltage signals; 12 device output current signals; 13 fan electrical current signals, 14 temperature sensor signals, 41 rotation speed of the fan pulses; 42 temperature protection switch signals, 43 other remote signalling.
Fig. 2 is the workflow diagram that the utility model is used for the multifunction protection module of Active Power Filter-APF.
Embodiment
As shown in Figure 1; the utility model is used for the multifunction protection module of Active Power Filter-APF; take microprocessor 3 as core; mainly comprise microprocessor 3, analog signals input module 1 and remote signals module 4; analog signals input module 1 is connected to analog to digital converter 2 and accesses microprocessor 3 again; remote signals module 4 is connected to remote signalling input interface 5 and accesses microprocessor 3 again, and microprocessor 3 is connected with the relay output interface with communication interface 6 and is connected.
Analog signals input module 1 with system voltage signal 11, the device output current signal 12, fan electrical current signal 13 and temperature sensor signal 14 aggregation process after, send into analog to digital converter 2.
The signal that analog to digital converter 2 is responsible for analog signals input module 1 is sent into converts digital signal to, sends into microprocessor 3.
Remote signalling input interface 5 is responsible for remote signalling information is sent into microprocessor 3.
Fig. 2 has shown that the utility model is used for the workflow of the multifunction protection module of Active Power Filter-APF, specifically:
＜1〉microprocessor 3 is set up the periodic cycle task, begins the protection task;
＜2〉microprocessor 3 by analog to digital converter 2, reads system voltage signal 11, device output current signal 12, fan electrical current signal 13 and temperature sensor signal 14 in analog signals input module 1;
＜3〉microprocessor 3 by remote signalling input interface 5, reads rotation speed of the fan pulse 41, temperature protection switch signal 42 and other remote signalling 43 in remote signals module 4;
＜4〉microprocessor 3 according to the protection logic of finishing, is protected logic discrimination to analog quantity and remote signalling amount;
＜5〉microprocessor 3 according to protection logic discrimination result, determines whether the abnormal event, if do not occur, this subtask finishes; If occur, continue next step flow process;
＜6〉abnormal event, microprocessor 3 control relay output interfaces 7 are carried out trip command, and the cut-out Active Power Filter-APF is connected with power distribution network;
＜7〉abnormal event, microprocessor 3 communication control interfaces 6 upload to remote monitoring system with anomalous event;
＜8〉task finishes.
Multifunction protection module of the present utility model provides the defencive function of multinomial practicality, can provide reliable protection to Active Power Filter-APF, the loss that has greatly reduced Active Power Filter-APF self and externally caused.
Claims (3)
1. multifunction protection module that is used for Active Power Filter-APF; take microprocessor as core; it is characterized in that mainly comprising microprocessor, analog signals input module and remote signals module; the analog signals input module is connected to analog to digital converter and accesses microprocessor again; the remote signals module is connected to the remote signalling input interface and accesses microprocessor again, and microprocessor is connected with the relay output interface with communication interface.
2. the multifunction protection module for Active Power Filter-APF according to claim 1, is characterized in that: described analog signals input module input system voltage signal, device output current signal, fan electrical current signal and temperature sensor signal.
3. the multifunction protection module for Active Power Filter-APF according to claim 1, is characterized in that: the pulse of described remote signalling input interface input rotation speed of the fan, temperature protection switch signal and other remote signalling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220687141 CN202930910U (en) | 2012-12-13 | 2012-12-13 | Multifunctional protection module used for active power filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220687141 CN202930910U (en) | 2012-12-13 | 2012-12-13 | Multifunctional protection module used for active power filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202930910U true CN202930910U (en) | 2013-05-08 |
Family
ID=48220820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220687141 Expired - Fee Related CN202930910U (en) | 2012-12-13 | 2012-12-13 | Multifunctional protection module used for active power filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202930910U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793079A (en) * | 2015-04-16 | 2015-07-22 | 上海理工大学 | Active power filter monitoring system |
| CN105490248A (en) * | 2015-11-28 | 2016-04-13 | 国家电网公司 | Comprehensive protection circuit for active power filter (APF) |
| CN107611922A (en) * | 2017-10-23 | 2018-01-19 | 成都旭思特科技有限公司 | The equipment for monitoring wave filter working condition |
-
2012
- 2012-12-13 CN CN 201220687141 patent/CN202930910U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793079A (en) * | 2015-04-16 | 2015-07-22 | 上海理工大学 | Active power filter monitoring system |
| CN105490248A (en) * | 2015-11-28 | 2016-04-13 | 国家电网公司 | Comprehensive protection circuit for active power filter (APF) |
| CN105490248B (en) * | 2015-11-28 | 2018-06-22 | 国家电网公司 | A kind of general protective circuit for APF |
| CN107611922A (en) * | 2017-10-23 | 2018-01-19 | 成都旭思特科技有限公司 | The equipment for monitoring wave filter working condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20161213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |