CN105811422B - A kind of automatic reactive compensated controller - Google Patents
A kind of automatic reactive compensated controller Download PDFInfo
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- CN105811422B CN105811422B CN201610153424.0A CN201610153424A CN105811422B CN 105811422 B CN105811422 B CN 105811422B CN 201610153424 A CN201610153424 A CN 201610153424A CN 105811422 B CN105811422 B CN 105811422B
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- 239000003990 capacitor Substances 0.000 claims abstract description 36
- 238000005070 sampling Methods 0.000 claims abstract description 11
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- 230000001932 seasonal effect Effects 0.000 abstract description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 241001269238 Data Species 0.000 description 5
- 230000001012 protector Effects 0.000 description 5
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- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229960001296 zinc oxide Drugs 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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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
- Y02E40/30—Reactive power compensation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of automatic reactive compensated controllers, including dsp processor, voltage sample circuit, current sampling circuit, memory, the dsp processor is equipped with threshold values presetting module and data processing module, by the default delay threshold values of threshold values presetting module and voltage switching threshold values and store in memory, the voltage sample circuit carries out voltage data acquisition according to default delay threshold values, and the voltage data of acquisition is compared with preset voltage switching threshold values and controls intelligent capacitor action according to comparison result by the data processing module.The present invention is utilized presets delay threshold values on dsp processor, can be according to practical rural area public affairs varying duty and seasonal variations the characteristics of, freely set, make the voltage of every wave 5 times or average value that current data acquisition is calculated is more accurate, avoids value data fluctuations indefinite and automatic reactive compensated controller is caused frequently to send the instruction of intelligent capacitor switching.
Description
Technical field
The present invention relates to reactive power compensation technologies.
Background technology
Automatic reactive compensated controller currently on the market controls idle switching all using the side of delay using voltage threshold
Method, but be mounted on line side since power load distributing is unbalanced, seaonal load changes greatly in rural area and compensated as line sectionalizing
Reactive power compensator, frequently encounter delay time setting it is short, idle switching with regard to frequent, if delay time be arranged long, agriculture
Village line side occurs just promoting line side quality of voltage in time when of short duration " low-voltage ".
Therefore, how effective judgment method is used, so that automatic reactive compensated controller transmission is timely instructed, while again
It is avoided that the frequent switching action of intelligent capacitor, is current problem in the urgent need to address.
Invention content
The technical problems to be solved by the invention are just to provide a kind of automatic reactive compensated controller, improve idle switching mistake
Accuracy rate in journey avoids making intelligent capacitor frequent movement because of voltage fluctuation.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：A kind of automatic reactive compensated controller, including
Dsp processor, voltage sample circuit, current sampling circuit, memory, the dsp processor are equipped with threshold values presetting module sum number
According to processing module, by the default delay threshold values of threshold values presetting module and voltage switching threshold values and store in memory, the electricity
Press sample circuit to carry out voltage data acquisition according to default delay threshold values, the data processing module by the voltage data of acquisition and
Preset voltage switching threshold values is compared and controls intelligent capacitor action according to comparison result；
The auto-reactive compensation switching control method of the automatic reactive compensated controller includes the following steps：
Step 1：5 voltage data acquisitions are carried out successively according to default delay threshold values, calculate the average value of 5 voltage values
First time average voltage is obtained, whether comparison voltage switching threshold values × 1.05 are less than first time average voltage；It is judged as
"No" exits reactive compensation switching control process；It is judged as that "Yes" then enters step 2；
Step 2：5 voltage data acquisitions are carried out successively according to default delay threshold values, calculate the average value of 5 voltage values
Second of average voltage is obtained, whether comparison voltage switching threshold values × 1.02 are less than second of average voltage, if it is determined that
For "No", further judge whether second average voltage more than first time average voltage exits nothing if the judgment is Yes
Work(compensates switching and controls process；Otherwise 3 are entered step；
Step 3：Automatic reactive compensated controller sends the 1st group of intelligent capacitor and puts into operation instruction, while prolonging further according to presetting
When threshold values carry out the acquisition of 5 voltage datas successively, calculate 5 being averaged for voltage value and be worth to third time average voltage, than
Whether it is less than third time average voltage compared with voltage switching threshold values × 0.99；It is judged as "No", compares third time average voltage
Whether it is more than second of average voltage, if the judgment is Yes, compares whether third time average voltage is more than first time voltage
Average value, if the judgment is Yes, automatic reactive compensated controller, which is sent, cuts off the 1st group of intelligent capacitor instruction, exits idle benefit
Repay switching control process；Otherwise 4 are entered step；
Step 4：5 voltage data acquisitions are carried out successively according to default delay threshold values, calculate the average value of 5 voltage values
The 4th average voltage is obtained, whether rate of exchange voltage switching threshold values × 0.97 is less than the 4th average voltage；It is judged as NO,
Compare whether the 4th average voltage is more than third time average voltage, if the judgment is No, automatic reactive compensated controller
The 2nd group of intelligent capacitor is sent to put into operation instruction；Otherwise 5 are entered step；
Step 5：5 voltage data acquisitions are carried out successively according to default delay threshold values, are calculated 5 average voltages, are compared
Whether voltage switching threshold values × 1.02 are less than the 5th average voltage；It is judged as NO, compares the 5th average voltage and be more than
Whether second of average voltage be true, and if the judgment is Yes, automatic reactive compensated controller sends the 1st group and the 2nd group of excision
Intelligent capacitor instructs, and exits reactive compensation switching control and judges；Otherwise circulation step 4 is executed.
Preferably, the automatic reactive compensated controller is equipped with RS485 communication interfaces, the RS485 communication connectors are logical
Connection is crossed to connect with intelligent capacitor communication.
The technical solution adopted by the present invention, advantage are embodied in：
It 1, can be according to practical rural area public affairs varying duty and seasonal variations using delay threshold values is preset on dsp processor
Feature is freely set, and is kept the average value that the voltage of every wave 5 times or current data acquisition are calculated more accurate, is avoided value
Data fluctuations are indefinite and automatic reactive compensated controller is caused frequently to send the instruction of intelligent capacitor switching.
2, by 5 cycle-criterion, 5 measured datas of delay number are added, can accomplish the data of switching instruction
More precisely, switching action is more correct.
3, step -by -step switch is executed to intelligent capacitor by criterion, the generation of phenomenon can be mended without merits and demerits to avoid line side,
Intelligent capacitor excessively frequent switching when voltage prompt drop when also solving motor or summer user's starting of air conditioner simultaneously.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and detailed description：
Fig. 1 is automatic reactive compensator internal element mounting structure schematic diagram；
Fig. 2 is the structural schematic diagram of automatic reactive compensated controller；
Fig. 3 is the auto-reactive compensation switching control method flow graph of auto-reactive compensation device；
Fig. 4 is the scheme of installation of automatic reactive compensator；
Fig. 5 is the fixed structure schematic diagram of automatic reactive compensator；
Fig. 6 is the structural schematic diagram into line clamping device.
Specific implementation mode
Portable more adaptation pressure regulation idle benefit automatically is installed on rural area low-voltage circuit branch line or the electric pole of user's end
Repay device.
As shown in Figure 1, the portable pressure regulation automatic reactive compensator that adapts to includes babinet more, electric current is installed in babinet
Mutual inductor, automatic reactive compensated controller, residual current action protector, breaker, intelligent capacitor, Zinc-Oxide Arrester,
Babinet internal upper part installs 3 × 25 copper bars, and disengaging binding post is connect with copper bar, copper bar downlead through A, B, C phase current mutual inductor and
Residual current action protector upper end connects, and residual current action protector upper end first via lead is controlled with auto-reactive compensation
Device voltage sampling end connects, and the second pass line is connect with Zinc-Oxide Arrester, and third pass line is then through breaker and corresponding intelligence
Capacitor connects, and Current Transformer Secondary line is connected with automatic reactive compensated controller current sampling end, at least 2 groups of intelligent capacitors
485 connections of device and 485 connections of automatic compensating controller connect, residual current action protector lower prop lead and outlet
Binding post is connected, and grounding body is connected on babinet.
Concrete operating principle is as follows：
Automatic reactive compensated controller is accessed by acquiring low-voltage circuit A, B, C phase current and voltage data, it is automatic idle
Compensating controller controls intelligent capacitor realization and mends switching action to three-phase separate or altogether again, when low-voltage circuit voltage is less than automatic nothing
When work(compensating controller pre-set threshold value, executed by the method that auto-reactive compensation switching controls by automatic reactive compensated controller
Intelligent capacitor is thrown or cut successively to cycle criterion according to criterion step.Zinc-Oxide Arrester is solved when circuit bears overvoltage
Carry out voltage clamping, when excessively high voltage occurs can drag down protective device is not burnt by lightning stroke, ground terminal through conducting wire with connect
The line electrical leakage of protection cabinets body drain electricity and low-voltage circuit after outlet may be implemented in ground column connection, residual current action protector,
Realize low-voltage circuit electric leakage buffer action.
As shown in Fig. 2, automatic reactive compensated controller is equipped with dsp processor, memory, gsm communication module, voltage sampling
Circuit, current sampling circuit, interactive keyboard, LED data are shown and RS485 communication interfaces composition.
Dsp processor is equipped with threshold values presetting module and data processing module, passes through the default delay threshold values of threshold values presetting module
With voltage switching threshold values and store in memory, voltage sample circuit according to default delay threshold values progress voltage data acquisition,
The voltage data of acquisition is compared with preset voltage switching threshold values and controls intelligence according to comparison result by data processing module
It can capacitor actions.
By interactive keyboard, threshold values and power factor (PF) is arranged in predeterminated voltage switching threshold values, delay in dsp processor
Switching threshold values.Automatic reactive compensated controller is using voltage sampling circuit access and current sampling circuit access, and voltage segment is then
Using being directly accessed, be then converted into voltage value by automatic reactive compensated controller built-in voltage sample circuit, and in
The method that preset threshold values built in dsp processor carries out auto-reactive compensation switching control executes cycle criterion, meets and judges to provide
When needing to put into intelligent capacitor, event is sent by dsp processor and pushes to corresponding intelligent capacitor through RS485 communication interfaces,
Intelligent capacitor receives instruction and puts into operation, while dsp processor retransmits instruction, and intelligent capacitor is sent through GSM communication modules
The SMS that device puts into operation；Current sampling circuit is transmitted by current transformer measured data, through current sampling circuit
Amplification and processing, push data into dsp processor, by dsp processor through electric current, power factor, and the COMPREHENSIVE CALCULATINGs such as idle,
It determines under idle deficient benefit state, executes the method cycle criterion of auto-reactive compensation switching control, reach condition, by DSP processing
Device sends instruction input intelligent capacitor.
As shown in figure 3, the method for auto-reactive compensation switching control is as follows：
Criterion 1：The speed that 5 realities adopt data is calculated according to the delay setting threshold values of dsp processor, and is carried out 5 times successively
Voltage data acquires, and the average for calculating 5 voltage values obtains first time average value, while by the voltage switching of dsp processor
Threshold values × 1.05 are calculated and judge whether to be less than first time measured data average value；It is judged as "No", measurement voltage value category
Normal range (NR) exits reactive compensation switching control and judges；It is judged as that "Yes" then enters criterion 2；
Criterion 2：5 voltage datas are acquired successively again according to above method, calculate average value and the voltage with dsp processor
Switching threshold values × 1.02 carry out calculating comparison, if are less than second of measured data average value；It is judged as "No", it will be real for the second time
The comparison of measured data average value and first time measured data average value judges, if it is greater than establishment, measurement voltage value category normal range (NR),
Reactive compensation switching control is exited to judge；Otherwise enter criterion 3；
Criterion 3：Automatic reactive compensated controller sends the 1st group of intelligent capacitor and puts into operation instruction, while acquisition 5 times successively again
Voltage data calculates average value, is compared with pre-set threshold value × 0.99, if is less than third time measured data average value；It is judged as
"No" judges third time measured data average value and second of measured data average value comparison, if it is greater than establishment, third time
Measured data average value carries out comparison judgement again with first time measured data average value, is more than sets up for another example, measurement voltage value category
Normal range (NR), automatic reactive compensated controller, which is sent, cuts off the 1st group of intelligent capacitor instruction, exits reactive compensation switching control and sentences
It is disconnected；Otherwise enter criterion 4；
Criterion 4：5 voltage datas are acquired successively, calculate average value, with the comparison of pre-set threshold value × 0.97, if are less than the
Four measured data average values；It is judged as "No", by the 4th measured data average value and third time measured data average value pair
Than judging, if it is greater than invalid, automatic reactive compensated controller sends the 2nd group of intelligent capacitor and puts into operation instruction；Otherwise enter and sentence
According to 5；
Criterion 5：5 voltage datas are acquired successively, calculate average value, with the comparison of pre-set threshold value × 1.02, if are less than the
Five measured data average values；It is judged as "No", by the 5th measured data average value and second of measured data average value pair
Than judging, if it is greater than establishment, measurement voltage value category normal range (NR), automatic reactive compensated controller sends the 1st group and the 2nd of excision
Group intelligent capacitor instruction is exited reactive compensation switching control and is judged；Otherwise cycle-criterion 4 is executed.
It is control method when factors of voltage occurs needing to put into intelligent capacitor, the switching controlling party of power factor (PF) above
Method is similar to its, that is, carries out 5 voltage and current data acquisitions successively according to default delay threshold values, and calculates separately power
Factor, finally calculates the average value of 5 power factor (PF) numerical value, then goes to be compared judgement with power factor (PF) switching threshold values, determines
It is to exit reactive compensation switching control process, or further judge.But both voltage and power factor (PF) occur needing to throw simultaneously
When entering intelligent capacitor, the high priority data that is measured with voltage sample circuit.
As shown in Figure 4 and Figure 5, automatic reactive compensator includes babinet 1 and the electric elements in babinet 1, babinet
The back side be fixed with installing arm 11, installing arm 11, which passes through anchor ear 21, holds tightly with electric pole 2 and fixes.
Electric pole 2 is cylinder, and steel plate may be used in installing arm 11 or iron plate makes, U-shaped, and the bottom edge of installing arm is horizontal
Setting, the first side of installing arm and box back surface welding or bolt are fixed, and the second side of installing arm is towards electric pole side
Plane is equipped with a pair of of L-type locating piece 23, and the L-type locating piece is located on electric pole periphery.The second side two of installing arm
End is equipped with anchor ear bolt 22, and anchor ear bolt 22 fixes anchor ear and vertical installing arm second side.L-type locating piece 23 uses angle steel system
At, it is welded and fixed with installing arm, due to the effect of L-type locating piece, the positioning between installing arm 11 and electric pole 2 and fixed effect
Fruit is more preferable, more stable.
It is steel structure, holder two sides are triangular structure of right angle, on holder in addition, being equipped with holder 12 below babinet
Side is equipped with support plate 13, and tank floor is placed in support plate, is equipped with top plate 14 at the top of babinet, top plate protrudes forward, top plate
Upper plane is by the rear side inclined inclined-plane of side-lower forward, in order to overboard.
As shown in fig. 6, the bottom of babinet 1 is equipped with a Wiinding cartridge 3, bobbin winoler, the Wiinding cartridge are equipped in the Wiinding cartridge 3
Bottom plate be equipped with line inlet port 30, be connected on the downside of the line inlet port into wire terminal 31, it is described enter wire terminal be connected with into line
Clamping device.
Wherein, it is described enter line clamping device include interior gripping sleeve 32 and outer actuating sleeve 33, the endoporus of the outer actuating sleeve is set
There are inner conical surface, the outer surface of the interior gripping sleeve to be equipped with male cone (strobilus masculinus), the male cone (strobilus masculinus) is slidably matched with inner conical surface, the outer driving
The outer surface of set is equipped with external screw thread, it is described enter wire terminal be equipped with internal thread hole, the external screw thread engages with internal thread hole.It is described enter
Wire terminal and box body are carbon steel structure, and the outer actuating sleeve is made of carbon steel, and the interior gripping sleeve uses polytetrafluoroethylene (PTFE)
It makes.The structural strength and wearability of carbon steel are good, and polytetrafluoroethylene (PTFE) deformation performance is good, to facilitate clamping optical cable.The outer driving
The outer surface of set is equipped with two parallel driving planes, is acted on convenient wrench.
Claims (2)
1. a kind of automatic reactive compensated controller, it is characterised in that：Including dsp processor, voltage sample circuit, current sampling electricity
Road, memory, the dsp processor are equipped with threshold values presetting module and data processing module, prolong by the way that threshold values presetting module is default
When threshold values and voltage switching threshold values and store in memory, the voltage sample circuit is according to default delay threshold values progress voltage
Data acquire, the data processing module by the voltage data of acquisition be compared with preset voltage switching threshold values and according to than
It is acted compared with output control intelligent capacitor；
The auto-reactive compensation switching control method of the automatic reactive compensated controller includes the following steps：
Step 1：5 voltage data acquisitions are carried out successively according to default delay threshold values, are calculated 5 being averaged for voltage value and are worth to
Whether first time average voltage, comparison voltage switching threshold values × 1.05 are less than first time average voltage；It is judged as "No", moves back
Go out reactive compensation switching control process；It is judged as that "Yes" then enters step 2；
Step 2：5 voltage data acquisitions are carried out successively according to default delay threshold values, are calculated 5 being averaged for voltage value and are worth to
Whether second of average voltage, comparison voltage switching threshold values × 1.02 are less than second of average voltage, if it is determined that
"No" further judges whether second of average voltage exits idle if the judgment is Yes more than first time average voltage
It compensates switching and controls process；Otherwise 3 are entered step；
Step 3：Automatic reactive compensated controller sends the 1st group of intelligent capacitor and puts into operation instruction, while further according to default time-delay valve
Value carries out 5 voltage data acquisitions successively, calculates 5 being averaged for voltage value and is worth to third time average voltage, more electric
Press whether switching threshold values × 0.99 is less than third time average voltage；It is judged as "No", whether compares third time average voltage
More than second average voltage compares whether third time average voltage is more than first time average voltage if the judgment is Yes
Value, if the judgment is Yes, automatic reactive compensated controller, which is sent, cuts off the 1st group of intelligent capacitor instruction, exits reactive-load compensation throwing
Cut control process；Otherwise 4 are entered step；
Step 4：5 voltage data acquisitions are carried out successively according to default delay threshold values, are calculated 5 being averaged for voltage value and are worth to
Whether the 4th average voltage, comparison voltage switching threshold values × 0.97 are less than the 4th average voltage；It is judged as NO, compares
4th time whether average voltage is more than third time average voltage, and if the judgment is No, automatic reactive compensated controller is sent
2nd group of intelligent capacitor puts into operation instruction；Otherwise 5 are entered step；
Step 5：5 voltage data acquisitions are carried out successively according to default delay threshold values, calculate 5 average voltages, comparison voltage
Whether switching threshold values × 1.02 are less than the 5th average voltage；It is judged as NO, compares the 5th average voltage and be more than second
Whether secondary average voltage is true, and if the judgment is Yes, automatic reactive compensated controller sends the 1st group and the 2nd group intelligence of excision
Capacitor instructs, and exits reactive compensation switching control and judges；Otherwise circulation step 4 is executed.
2. a kind of automatic reactive compensated controller according to claim 1, it is characterised in that：The auto-reactive compensation control
Device processed is equipped with RS485 communication interfaces, and the RS485 communication connectors are connected by connection and intelligent capacitor communication.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610153424.0A CN105811422B (en) | 2016-03-17 | 2016-03-17 | A kind of automatic reactive compensated controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610153424.0A CN105811422B (en) | 2016-03-17 | 2016-03-17 | A kind of automatic reactive compensated controller |
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| CN105811422B true CN105811422B (en) | 2018-07-27 |
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| JP3662781B2 (en) * | 1999-08-10 | 2005-06-22 | 株式会社日立製作所 | Reactive power compensation system |
| CN101924369B (en) * | 2010-09-07 | 2014-08-13 | 沈阳博来德滋电子科技有限公司 | Dynamic reactive power compensation method of intelligent low-pressure meter reading |
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