CN201813162U - Filtering control system - Google Patents
Filtering control system Download PDFInfo
- Publication number
- CN201813162U CN201813162U CN2010202523241U CN201020252324U CN201813162U CN 201813162 U CN201813162 U CN 201813162U CN 2010202523241 U CN2010202523241 U CN 2010202523241U CN 201020252324 U CN201020252324 U CN 201020252324U CN 201813162 U CN201813162 U CN 201813162U
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- China
- Prior art keywords
- control system
- filtering control
- area network
- network bus
- controller
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
A filtering control system comprises a main controller and at least one trigger protector; the main controller is provided with a digital signal processor for sampling and counting current and voltage; the trigger protector is provided with a digital signal processor for sampling and counting the current, and carrying out over current testing and protection control; the filtering control system further comprises a controller local area network bus; the main controller and the triggering protector are connected with the controller local area network bus; the data communication among the nodes of the network formed by the controller local area network bus has strong real-time performance; a redundancy structure is easy to form, thereby being capable of improving the reliability and stability of the filtering control system; and simultaneously, only two wires of the controller local area network bus are connected with the outside generally so that the filtering control system is simple in wire distribution and convenient to expand.
Description
Technical field
The utility model relates to a kind of filtering control system, particularly a kind of filtering control system that is applied to power electronic technology and apparatus field.
Background technology
General existing power system is when non-linear equipment and load power supply, these equipment or load are in the first-harmonic energy that transmission (transformer etc.), conversion (rectifier etc.), absorption (direct current machine etc.) generator are supplied with, is part first-harmonic power conversion harmonic energy, send high order harmonic component to electric power system, the sine wave of electric power system is distorted, and the quality of power supply descends, and destroys system equipment, the power loss of the system that increases electric power threatens the safe operation of electric power system.Be head it off; need in electric power system, be provided with and to carry out switching (switching refers to voltage input and current cut-off; be common protection mechanism in the electric power system) filtering control system; current filtering control system adopts the input/output port of processor directly to drive thyristor or contactor through isolating mostly, thereby realizes the purpose of switching.
But because there are interference such as electromagnetism in applied environment, the subject matter of therefore existing filtering control system is: 1, system is reliable and stable inadequately, and the switching instruction is subject to disturb and causes mistake, the relay perseveration, and mechanical wear is serious; 2, wiring complexity is unfavorable for expansion.
Above problem has restricted the effect of filtering control system in electric power system, therefore, needs a kind of new solution to address the above problem.
The utility model content
The purpose of this utility model is at the existing problem and shortage of existing filter controller, and a kind of filtering control system is provided, and this filtering control system is reliable and stable and wiring is simple.
For achieving the above object, the utility model filtering control system can adopt following technical scheme:
A kind of filtering control system; comprise master controller and at least one trigger protection device; has the digital signal processor of sampling and calculating in the described master controller in order to electric current and voltage; has digital signal processor in the described trigger protection device in order to electric current is sampled and calculate and carry out over-current detection and protection control; this filtering control system also has Controller Area Network BUS, and described master controller and trigger protection device all are connected on this Controller Area Network BUS.
Compare with background technology, the utility model filtering control system all is connected on this Controller Area Network BUS by described master controller and trigger protection device, and each data between nodes real-time communication of network that Controller Area Network BUS constitutes is strong, and constitute redundancy structure easily, thereby can improve the reliability and the stability of filtering control system; Controller Area Network BUS generally has only two lines to link to each other with the outside simultaneously, can make the wiring of this filtering control system simple, is convenient to expansion.
Description of drawings
Accompanying drawing is the structural representation of the utility model filtering control system.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these embodiment only be used to the utility model is described and be not used in the restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present utility model.
See also shown in the accompanying drawing, the utility model filtering control system comprises a Controller Area Network BUS (CAN bus), master controller, at least one trigger protection device, transducer and the host computer (PC) that links to each other with transducer.Wherein, described master controller, trigger protection device and transducer all are connected on this Controller Area Network BUS.Described host computer is connected with Controller Area Network BUS by transducer.All has digital signal processor (not shown) in described master controller and the trigger protection device.In the present embodiment, the TMS320F2802 type DSP chip of this preferred Texas Instrument of digital signal processor is so that calculate real-time and accurate to parameters of electric power.Described trigger protection device is connected with in order to carry out switching thyristor or contactor, and described trigger protection utensil has in order to identification thyristor and contactor final election switch.Described host computer is in order to controlling this filtering control system, and connects host computer and Controller Area Network BUS by transducer.
Below in conjunction with the operation principle of introducing this filtering control system shown in the accompanying drawing: also have the voltage transformer and the current transformer that link to each other with master controller in this filtering control system, with voltage, current signal isolated variable for being fit to the signal of master controller sampling.Main controller device adopts the digital signal processor that is provided with that this electric current, voltage signal are carried out the AD sampling, sampled value is done Fourier transform, calculate electric current, the voltage effective value of each harmonic, the current/voltage aberration rate, active power, reactive power, data such as apparent power and power factor.According to Switching Strategy; comprehensive power factor and country are to the limitation standard of harmonic wave; by Controller Area Network BUS switching mode is passed to the relative trigger protector; the mailing address of this transmission tasks (Controller Area Network BUS communication is by the transmission and the acceptance of address realization data, and the memory of burned internal processor chip is interior before dispatching from the factory in the address of each device) sees table:
Digital signal processor in described several trigger protection devices (being 3 times, 5 times, 7 times, 11 subharmonic trigger protection devices in the accompanying drawing) carries out the AD sampling to the electric current after nursing one's health, sampled value is done Fourier transform, calculate the current effective value of each harmonic, carry out over-current detection and protection control in real time; Voltage after the trigger protection device adopts digital signal processor to conditioning simultaneously carries out the AD sampling, and sampled value is done Fourier transform, calculates the frequency values of harmonic voltage, according to the peak point of frequency values predicted voltage waveform, as switching constantly.Described trigger protection device detects Controller Area Network BUS in real time, when receiving the switching value of master controller transmission, gives master controller with switching value reverse transfer; Whether the switching value that master controller compares twice transmission is identical, and identical then sending confirmed order, and this moment, the trigger protection device was with formal switching; Otherwise resend the switching value, till correct switching.The trigger protection device is equipped with and allows the switching input, and before this signal does not detect, the trigger protection device will not carry out switching.It is thyristor or contactor (thyristor and contactor drive peripheral hardware for the switching in order to finish switching work commonly used) that the trigger protection device is discerned current switching driving peripheral hardware by the final election switch; thereby select the corresponding switching moment and tactful device automatically, satisfied the demand of different application occasion.
Trigger protection device in the utility model and master controller are all realized by the transmission of Controller Area Network BUS with control about the order transmission of switching value; and the advantage of Controller Area Network BUS is; each node in its network all can adopt the mode of arbitration by turn of no damage structure to compete to Controller Area Network BUS according to the bus access priority and send data; and the controller local area network compromise annulment station address coding; and replace communication data is encoded; this can make different nodes receive identical data simultaneously; each data between nodes real-time communication of network that these characteristics make Controller Area Network BUS constitute is strong; and constitute redundancy structure easily, improve the reliability of system; the flexibility of stability and system.And the antijamming capability of Controller Area Network BUS is strong, has more improved the reliability and stability of system.And Controller Area Network BUS generally has only two lines to link to each other with the outside, and inner integrated error detector and administration module, thereby adopts this Controller Area Network BUS can make the wiring of this filtering control system simple, is convenient to expansion.
Host computer interface in this filtering control system allows to carry out parameter setting and is transferred to master controller by Controller Area Network BUS, the relevant parameter of master control storage, and the parameter subpackage with each harmonic trigger protection device simultaneously is transferred to the trigger protection device.The parameters of electric power of host computer interface real-time update master controller and each harmonic trigger protection device and switching state allow simultaneously at interface realization manual switching.
Claims (4)
1. filtering control system; comprise master controller and at least one trigger protection device; has the digital signal processor of sampling and calculating in the described master controller in order to electric current and voltage; has digital signal processor in the described trigger protection device in order to electric current is sampled and calculate and carry out over-current detection and protection control; it is characterized in that: this filtering control system also has Controller Area Network BUS, and described master controller and trigger protection device all are connected on this Controller Area Network BUS.
2. filtering control system according to claim 1 is characterized in that: described trigger protection device is connected with in order to carry out switching thyristor or contactor, and described trigger protection utensil has in order to identification thyristor and contactor final election switch.
3. filtering control system according to claim 1 and 2 is characterized in that: described filtering control system also has in order to control the transducer that this filtering control system gets host computer and connects host computer and Controller Area Network BUS.
4. filtering control system according to claim 3 is characterized in that: described digital signal processor is the TMS320F2802 type digital signal processor of Texas Instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202523241U CN201813162U (en) | 2010-07-07 | 2010-07-07 | Filtering control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202523241U CN201813162U (en) | 2010-07-07 | 2010-07-07 | Filtering control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201813162U true CN201813162U (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202523241U Expired - Fee Related CN201813162U (en) | 2010-07-07 | 2010-07-07 | Filtering control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201813162U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867190A (en) * | 2010-07-07 | 2010-10-20 | 无锡亿能电气有限公司 | Filtering control system |
-
2010
- 2010-07-07 CN CN2010202523241U patent/CN201813162U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867190A (en) * | 2010-07-07 | 2010-10-20 | 无锡亿能电气有限公司 | Filtering control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20120707 |