CN200997532Y - Intelligent dynamic reactive compensated controller - Google Patents
Intelligent dynamic reactive compensated controller Download PDFInfo
- Publication number
- CN200997532Y CN200997532Y CNU2006200265906U CN200620026590U CN200997532Y CN 200997532 Y CN200997532 Y CN 200997532Y CN U2006200265906 U CNU2006200265906 U CN U2006200265906U CN 200620026590 U CN200620026590 U CN 200620026590U CN 200997532 Y CN200997532 Y CN 200997532Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal processor
- voltage
- digital signal
- drive unit
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- Y02E40/30—Reactive power compensation
Landscapes
- Control Of Electrical Variables (AREA)
Abstract
An intelligent dynamic reactive compensation controller is composed of a three-phase AC voltage and current sampling circuit and a drive unit, of which the three-phase AC voltage and current sampling circuit comprises a voltage transformer and a current transformer as well as the consecutive preamplification circuit and biasing circuit, and the drive unit comprises an electric capacitance switching device and a power grid state detecting device, as well as a high-speed signal processor and the consecutive input interface circuit, output interface circuit and data and program memorizer; the output of the biasing circuit is delivered into the high-speed signal processor; the high-speed signal processor is connected with the electric capacitance switching device of the drive unit through the output interface circuit, for the Fourier transformation calculation and harmonic analysis on the input data of the biasing circuit, to get the power grid parameters of a reactive power and a power factor, and the numbers of capacitors are chosen and the electric capacitance switching device can be controlled as per the reactive power value; the power grid state detecting device is connected with the high-speed signal processor through the input interface circuit.
Description
Technical field
The utility model relates to a kind of power system reactive power compensation device.
Background technology
Along with the swift and violent growth of China's power industry, electrical network is progressively expanded, and electric load increases very fast, and electric pressure is more and more higher, and electrical network, power plant and single-machine capacity are also increasing, and the geographic areas that electrical network covers is in continuous expansion.But, because all multifactor influences such as geographical environment, fuel transport, water resources and scale of economic development, cause power distribution unbalanced, guarantee the stable and good quality of power supply of system, just must solve a series of problems such as long distance power transmission, voltage-regulation and reactive power compensation.Voltage is one of main quality index of the quality of power supply, and the stabilization of power grids and power equipment safety operation, line loss, industrial or agricultural safety in production, product quality, electricity consumption unit consumption and people's lives electricity consumption are all had a direct impact.Reactive power is a key factor that influences quality of voltage, we can say, voltage problem is exactly idle problem in essence.Reactive power compensation is the important component part of power network construction and transformation, and it is to keep the network reactive balance, improves quality of voltage, reduces the effective measures of via net loss, is to fall the high scheme of small investment repayment in the damage measure.Resolve the reactive power compensation problem, have crucial meaning.
At present, the reactive power compensation and the voltage-regulation of many local electricities system still adopt traditional regulative mode, and on-load tap-changing transformer, electrostatic condenser etc. can only manual adjustments and switchings, can not realize that real-time voltage regulates or reactive power compensation.And some have formed the intelligent reactive power compensation controller of product, utilize the chip microcontroller intellectuality mostly, but because the function of single-chip microcomputer is limit, often exist implementation algorithm and control rate slow, control poor effect in real time, complicated algorithm can't be realized, and be difficult to suppress the shortcoming of high order harmonic component.
Summary of the invention
Technical problem to be solved in the utility model is, overcomes in the past with the above-mentioned deficiency of quasi-controller, provides that a kind of real-time is good, precision is high, can suppress the Intelligent Dynamic idle compensating control of high order harmonic component compensation.For this reason, the utility model adopts following technical scheme.
A kind of Intelligent Dynamic idle compensating control, comprise three-phase alternating voltage and current sampling circuit, drive unit, described three-phase alternating voltage and current sampling circuit comprise the voltage transformer summation current transformer and respectively with its pre-amplification circuit that links to each other successively and biasing circuit, described drive unit comprises electric capacitor switching device and electric network state detection means; Also comprise high-speed digital signal processor and the coupled input interface circuit of difference, output interface circuit, data and program storage; The output of described biasing circuit is admitted to high-speed digital signal processor; Described high-speed digital signal processor links to each other with the electric capacitor switching device of drive unit by output interface circuit, being used for that the data of described biasing circuit input are carried out Fourier transform calculates and harmonic analysis, obtain comprising the electrical network parameter of reactive power and power factor, and select to drop into the group number of capacitor according to the size of reactive power value, control described electric capacitor switching device; Described electric network state detection means links to each other with high-speed digital signal processor by input interface circuit.
The model of DSP can be TMS320LF2407, also can be any DSP that can satisfy the utility model functional requirement.
Intelligent Dynamic idle compensating control of the present utility model preferably also comprises single-chip microcomputer and the LED that links to each other with single-chip microcomputer, LCD output equipment and keyboard, and described single-chip microcomputer links to each other with high-speed digital signal processor.
The utility model is a kind of based on DSP realization Intelligent Dynamic reactive power compensation technology scheme, overcome in the past shortcoming with quasi-controller, for example compensate that real-time is poor, harmonic effects considers deficiency etc., adopted the dual processor pattern of DSP and single-chip microcomputer collaborative work in a preferred embodiment.DSP has the fast data processing capacity, and can carry out harmonic analysis, can realize real-time processing to image data, and can utilize the harmonic analysis function of DSP that line voltage and electric current are carried out fast Fourier transform, calculate fundamental voltage, fundamental current, reactive power, active power and power factor, draw the capacitance group number that needs compensation at last; Simultaneously, can suppress high order harmonic component, reduce the influence of harmonic wave electrical network by harmonic analysis, thereby overcome slow based on chip microcontroller algorithm and control rate in the past, control poor effect in real time, complicated algorithm can't be realized, and be difficult to suppress the shortcoming of high order harmonic component.
Description of drawings
Fig. 1: hardware circuit block diagram of the present utility model;
Fig. 2: phase voltage mutual inductance amplifying circuit schematic diagram of the present utility model;
Fig. 3: phase current mutual inductance amplifying circuit schematic diagram of the present utility model;
Fig. 4: phase voltage sampled signal of the present utility model promotes circuit theory diagrams;
Fig. 5: phase current sampling signal boost circuit theory diagrams of the present utility model.
Specific implementation
The utility model is based on the Intelligent Dynamic reactive power compensator that DSP realizes, the TMS320LF2407 type DSP that has adopted TI company to produce is the cpu system of core as the computing communication unit, to carry out fast fourier transform from three-phase voltage, current data that electrical network collects and calculate and do harmonic analysis, thereby obtain the effective value of voltage, electric current, active power, reactive power, parameters such as power factor.Select to drop into the group number of capacitor according to the size of reactive power value, realized idle dynamic compensation.
With specific embodiment the utility model is done with reference to the accompanying drawings below and be described in further detail.
Structured flowchart of the present utility model as shown in Figure 1.The 1-4 numeral that marks among the figure is represented 4 functional blocks respectively:
1 is depicted as first functional block, and it is made up of a plurality of modulate circuits, sends reasonable signal and is transferred to DSP;
2 are depicted as second functional block, are drive circuit module, are used to drive capacitance group switching and electrical network and detect;
3 are depicted as the 3rd functional block, and its core is carried out harmonic analysis for utilizing DSP to three-phase alternating voltage and electric current, obtain fundamental voltage and current value and active power, reactive power and the power factor value of each phase;
4 are depicted as the 4th functional block, and it mainly adopts communication, the data of PIC chip microcontroller and DSP to show and peripheral control.
First functional block---it is made up of some modulate circuits, promptly is made up of three-phase alternating voltage and current sampling circuit.Referring to Fig. 2 and Fig. 3, three-phase alternating voltage and electric current change into current value by voltage transformer pt 3 summation current transformer CT1 at first respectively; Current value after this conversion is through corresponding discharge circuit U412, and U407 converts the needed magnitude of voltage of controller to, this value-1.75V and+1.75V between.Because the model of the DSP that the utility model adopts is TMS320LF2407, the voltage range of its input signal is between 0 to 3.3V, so also need be with promoting circuit, if Fig. 4 and shown in Figure 5 converts magnitude of voltage between 0 to 3.3V to before DSP samples.
Second functional block---drive unit.Drive unit is made up of electric capacitor switching part and electric network state test section two parts.DSP will calculate according to reactive power 8421 yards is transferred to drive unit by the output interface circuit that is made of 74LS273 latch and light-coupled isolation device, comes the number of control capacitance group switching by this signal.Simultaneously this drive unit can the detection of grid state, if phase shortage is arranged, magnitude of voltage is excessive or phase sequence connects phenomena of the failure such as anti-, the digital signal of sending of drive unit is transferred to DSP by the input interface circuit that is made of latch 74HC244, and it is analyzed digital information and does the corresponding failure processing.
The core of the 3rd functional block---entire controller.Wherein DSP adopts TMS320LF2407, and two ten A/D converter is arranged, and has 16 input channels, and be 6US change-over time, can satisfy the requirement of gathering three-phase voltage and electric current and conversion accuracy.Extend out 2 32K data storage IS61LV6416.Adopt TL16C552 with the asynchronous serial communication chip of main frame, the interruption that it has 16 word FIFO can reduce DSP helps improving the real-time of system, the parallel port data is converted to serial data and single-chip microcomputer communicates.External alarm signal latchs and imports TMS320LF2407 by 74HC244, TMS320LF2407 enters interrupt routine and makes corresponding reflection.The control switching signal that TMS320LF2407 calculates and provides is latched and is exported by 74LS273 by data wire.Extend out watchdog reset chip for band EEPROM.
DSP is as slave, elder generation is by the parameter of real-time detection of grid, pass through instrument transformer, pre-amplification circuit and lifting circuit, the voltage and current signal of sampling is transformed into the A/D converter of 0 to 3.3V voltage signal input TMS320LF2407, data sampling keeps the back to separate and calculate the amplitude and the phase place of each harmonic by fft algorithm, obtain maximum harmonic number thus, the voltage and current value, and calculate the capacity of reactive power compensation, respectively organize building-out capacitor according to certain logic control and carry out switching, and carry out software filtering.Single-chip microcomputer is communicated by letter with DSP by serial ports as main frame, obtains to want data presented from DSP.
The 4th functional block---the realization of PIC SCM peripheral control.The data flash memory, keyboard, LED, LCD, house dog, the clock that are comprised 4M by the monolithic processor controlled ancillary equipment of PIC keep chip, USB interface etc.The function that this partial function piece is mainly realized is the man-machine interface that keyboard shows, six 8 sections LED charactrons are arranged on the panel, is used for Presentation Function and digital information: function information comprises configuration (config), the initialization setting of time (time); Digital information is mainly electric current, magnitude of voltage, power factor, reactive power and the active power that shows that dsp board records, and accurately is shown to the 2 significant digits significant digits.Six keyboards mainly are the measurement projects of carrying out the input function that initialization is provided with and being used for selecting needing showing, 30 independent LED lamps have been used for the effect of indicating, and indicating what show in the charactron is the concrete numerical information of which purpose.The realization of LED lamp and keypad function is all controlled by PIC16F73, and PIC16F73 and DSP (TMS320LF2407) carry out asynchronous serial communication simultaneously, obtain corresponding digital information to display from DSP.
Below introduce in detail as the TMS320LF2407 of core component of the present utility model and with being connected of peripheral circuit, A/D modules A DCN00, ADCN01, ADCN02 connect the alternating voltage analog quantity among the TMS320LF2407, and ADCN08, ADCN09, ADCN10 connect the alternating current analog quantity.Address pins A15-A0 links to each other with data wire with the address wire of the outer RAM IS61LV6416 of two sheets respectively with data pins D15-D0, and one of them RAM is used for procedure stores, and another is used for storage.Pin
*WE,
*RD and
*PS is respectively with two RAM's
*WE,
*OE and
*CE links to each other, control strip choosing and read-write.Pin PWM3/IOPB0, PWM4/IOPB1, PWM5/IOPB2, PWM6/IOPB3, PLLVCCA,
*RS links to each other with SI, SCK, CS/WDI, SO, WP and the RESET pin of house dog X5043P respectively, when system breaks down, the part significant data can be transferred to and preserve in the house dog, so that guarantee the integrality of these data during system restoration.Pin among the TMS320LF2407
*IS, A15, A13 and
*WE links to each other with 1E, 1A0,2A0 and the 2A1 of decoder 74HC139D respectively, forms two groups of decoders, wherein one group 2Y0 and 2Y2 pin connection asynchronous communication chip 16C2550
*CSB
*CSA is used for sheet and selects working method.16C2550's
*IOR,
*IOW pin and TMSLF2407's
*RD,
*WE links to each other, and is used for read-write control; The A0 of 16C2550, A1, A2 and data wire link to each other with A0, A1, A2 and the data wire of TMS320LF2407 respectively, finish transfer of data.Realized communicating by letter between TMS320LF2407 and the PIC by this chip, guaranteed that PIC shows related data and the realization of the function of peripheral control.
Annotate: top pin title, can be referring to the operation instructions of TMS320LF2407, wherein the pin with * is that low level is effective.
Need to prove, the utility model belongs to a kind of component invention, be a kind of innovation and creation that on technology is used, have novelty, wherein related three-phase alternating voltage and current sampling circuit, drive circuit, high-speed digital signal processor, single-chip microcomputer, be used for the input and output device of human-computer interaction function etc., all belong to prior art and existing various ways and application.The detail characteristic of circuit is not described herein again at this.
In addition, here with the embodiment of the present utility model detailed explanation that has been center deployment, the imbody of described optimal way or some characteristic, should be understood to this specification only is to describe the utility model by the mode that provides embodiment, in fact on some details of forming, construct and using, can change to some extent, comprise the combination and the assembly of parts, these distortion and application all should belong in the scope of the present utility model.
Claims (3)
1. Intelligent Dynamic idle compensating control, comprise three-phase alternating voltage and current sampling circuit, drive unit, described three-phase alternating voltage and current sampling circuit comprise the voltage transformer summation current transformer and respectively with its pre-amplification circuit that links to each other successively and biasing circuit, described drive unit comprises electric capacitor switching device and electric network state detection means; It is characterized in that, also comprise high-speed digital signal processor and the coupled input interface circuit of difference, output interface circuit, data and program storage; The output of described biasing circuit is admitted to high-speed digital signal processor; Described high-speed digital signal processor links to each other with the electric capacitor switching device of drive unit by output interface circuit, being used for that the data of described biasing circuit input are carried out Fourier transform calculates and harmonic analysis, obtain comprising the electrical network parameter of reactive power and power factor, and select to drop into the group number of capacitor according to the size of reactive power value, control described electric capacitor switching device; Described electric network state detection means links to each other with high-speed digital signal processor by input interface circuit.
2. Intelligent Dynamic idle compensating control according to claim 1 is characterized in that the model of described high-speed digital signal processor is TMS320LF2407.
3. Intelligent Dynamic idle compensating control according to claim 1, it is characterized in that, described Intelligent Dynamic idle compensating control also comprises single-chip microcomputer and the LED that links to each other with single-chip microcomputer, LCD output equipment and keyboard, and described single-chip microcomputer links to each other with high-speed digital signal processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200265906U CN200997532Y (en) | 2006-06-30 | 2006-06-30 | Intelligent dynamic reactive compensated controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200265906U CN200997532Y (en) | 2006-06-30 | 2006-06-30 | Intelligent dynamic reactive compensated controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200997532Y true CN200997532Y (en) | 2007-12-26 |
Family
ID=38995967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200265906U Expired - Fee Related CN200997532Y (en) | 2006-06-30 | 2006-06-30 | Intelligent dynamic reactive compensated controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200997532Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635462A (en) * | 2009-04-28 | 2010-01-27 | 上海申瑞电力科技股份有限公司 | Capacity collocation method for substation compensation capacitor |
| CN101924365A (en) * | 2010-08-11 | 2010-12-22 | 芜湖明远电力设备制造有限公司 | Dynamic harmonic suppression and reactive power compensation control system and control method thereof |
| CN101950970A (en) * | 2010-09-03 | 2011-01-19 | 天津理工大学 | Dynamic phase-splitting reactive compensation control system based on DSP |
| CN102611120A (en) * | 2012-03-27 | 2012-07-25 | 鲁东大学 | Power factor monitoring and compensating system |
| CN103545821A (en) * | 2013-10-12 | 2014-01-29 | 国家电网公司 | Low-voltage reactive power compensation controller |
| CN104767209A (en) * | 2015-02-13 | 2015-07-08 | 杭州水杉科技有限公司 | Intelligent connection reactive compensation control instrument and control method thereof |
-
2006
- 2006-06-30 CN CNU2006200265906U patent/CN200997532Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635462A (en) * | 2009-04-28 | 2010-01-27 | 上海申瑞电力科技股份有限公司 | Capacity collocation method for substation compensation capacitor |
| CN101635462B (en) * | 2009-04-28 | 2013-09-04 | 上海申瑞继保电气有限公司 | Capacity collocation method for substation compensation capacitor |
| CN101924365A (en) * | 2010-08-11 | 2010-12-22 | 芜湖明远电力设备制造有限公司 | Dynamic harmonic suppression and reactive power compensation control system and control method thereof |
| CN101950970A (en) * | 2010-09-03 | 2011-01-19 | 天津理工大学 | Dynamic phase-splitting reactive compensation control system based on DSP |
| CN102611120A (en) * | 2012-03-27 | 2012-07-25 | 鲁东大学 | Power factor monitoring and compensating system |
| CN103545821A (en) * | 2013-10-12 | 2014-01-29 | 国家电网公司 | Low-voltage reactive power compensation controller |
| CN104767209A (en) * | 2015-02-13 | 2015-07-08 | 杭州水杉科技有限公司 | Intelligent connection reactive compensation control instrument and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200997532Y (en) | Intelligent dynamic reactive compensated controller | |
| CN103278686B (en) | A kind of frequency analysis filtering system and intelligent selection harmonic detecting method | |
| CN103311932A (en) | Double-DSP (digital signal processor) control system based on chained SVG (scalable vector graphics) | |
| CN101881790A (en) | Intelligent electric power parameter tester | |
| CN101232188A (en) | Method for controlling reactive-load compensation capacitor and capable of on-line detecting and reactive-load compensation controller thereof | |
| CN101364737A (en) | Method capable of on-line detecting and controlling reactive compensating capacitor and reactive compensating controller thereof | |
| CN103323686B (en) | A kind of intelligent grid power quality analyzer | |
| CN205786995U (en) | Direct current transportation Thyristors in series all presses performance detecting system and voltage check device | |
| CN103023046B (en) | Based on the operating passing zero filtering reactive power compensator that dsp chip controls | |
| CN206211873U (en) | A kind of use DSP and double ARM control the three-level photovoltaic inverter of framework | |
| CN201378741Y (en) | Reactive power compensation filtering controller | |
| CN204578380U (en) | A kind of control system circuit board for general inverter device | |
| CN201765285U (en) | Device of monitoring real time wastage and load of transformer in operation | |
| CN203056589U (en) | Zero-crossing switching filtering reactive compensation device based on digital signal processor (DSP) chip control | |
| CN207368670U (en) | A kind of power distribution station imbalance controlling device based on photovoltaic commutation technology | |
| CN202524168U (en) | Power quality data monitoring device | |
| CN101271139B (en) | High-precision switching value detecting instrument and detecting method | |
| CN213689915U (en) | Hardware circuit of transformer winding state monitoring system | |
| CN104079183A (en) | Power electronic building block and application thereof | |
| CN104634929A (en) | Online monitor for transformer gas | |
| CN201196672Y (en) | High-precision switching value detecting instrument | |
| CN204287312U (en) | A kind of three-phase voltage sample circuit | |
| CN208421097U (en) | A kind of line loss acquisition module with analog switch | |
| CN105449686A (en) | Intelligent reactive power compensation and electric energy parameter display integrated control device | |
| CN101499772A (en) | Cascade 5 level frequency variant speed regulating circuit based on DSP and working method thereof |
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: 20071226 Termination date: 20150630 |
|
| EXPY | Termination of patent right or utility model |