CN107834939A - A kind of intelligent load-balancing device - Google Patents
A kind of intelligent load-balancing device Download PDFInfo
- Publication number
- CN107834939A CN107834939A CN201711260648.2A CN201711260648A CN107834939A CN 107834939 A CN107834939 A CN 107834939A CN 201711260648 A CN201711260648 A CN 201711260648A CN 107834939 A CN107834939 A CN 107834939A
- Authority
- CN
- China
- Prior art keywords
- compensating
- output end
- switch
- driver
- input
- 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.)
- Granted
Links
- 238000005070 sampling Methods 0.000 claims abstract description 33
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 13
- 230000004888 barrier function Effects 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 20
- 238000012360 testing method Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000009466 transformation Effects 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 10
- 238000005457 optimization Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/26—Power factor control [PFC]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/14—Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
-
- 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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The present invention relates to a kind of power back-off equipment, in particular it is a kind of intelligent load-balancing device, including sampling module, main power source input, Voltage stabilizing module, isolating transformer, power detecting module, reference ground end, master controller, compensating switch, compensating module, driver and main power source output end, driver is provided between isolating transformer and the main power source output end, the driver is between compensating switch and main power source output end, driver disconnecting switch is connected in parallel on the driver, one end of the driver disconnecting switch is connected between the input of driver and compensating switch, the other end of the driver disconnecting switch is connected to the output end of driver.Beneficial effects of the present invention are：It can realize that frequency control is run with power back-off orthofunction, possess splendid energy-saving effect.
Description
Technical field
The present invention relates to a kind of power back-off equipment, is in particular a kind of intelligent load-balancing device.
Background technology
AND ENERGY RESOURCES CONSUMPTION IN CHINA total amount is in ascendant trend, wherein industrial energy consumption account for national energy resource consumption year by year at present
70% or so of total amount, motor are the main power consumption terminal of industrial circle again, and electricity consumption accounts for the 75% of commercial power total amount.
Motor has two kinds of operating modes of speed governing and not speed governing in the application, accounts for more than 60% energy consumption for not needing speed regulating control motor
Problem is almost ignored by people, and most not bunchers have protection simply, lacks accident analysis and record, inefficient
Operation, the problem of waste of energy is serious.
It is widely used at present that shunt capacitor is installed in switchgear house transformer low voltage outlet side, produced to offset inductive load
Reactive loss, but the reactive loss of motor circuit can not be offset, and entirely compensate amount control in relatively low model
In enclosing (0.9-0.95), in order to avoid overcompensation.
Turn because motor output can occur for the change of peak valley mean period and the change of production process of electric power system
Square deficiency or low load with strong power phenomenon, increase system loss, the peace waste electric energy, improve supply line's temperature rise, reducing system
Quan Xing.
Often there is the situation of few material or disconnected material in the running of production equipment, now electric motor operation exists
The state of serious low load with strong power, waste of energy is huge, and this situation often occurs in process of production, especially in belt conveyor
Tool field is particularly acute.
Such as number of patent application is that a kind of of CN201620742672.4 drives electrical equipment, including drive circuit board and periphery electricity
Road, wherein drive circuit board include：Power detecting end, power input, SCR control end, current transformer end, radiation air
Fan control terminal, Voltage stabilizing module and single-chip microcomputer；Power input is connected by the power input pin of Voltage stabilizing module Ta and single-chip microcomputer
Connect；Peripheral circuit includes：Reverse-blocking tetrode thyristor, reactive power compensation circuit, fuse and inductor；The control terminal of reverse-blocking tetrode thyristor with
The SCR control end connection of drive circuit board；The input of reverse-blocking tetrode thyristor is connected with fuse；The output of reverse-blocking tetrode thyristor
End is connected with reactive power compensation circuit；Inductor is connected with current transformer end；Output end and nothing of the inductor in reverse-blocking tetrode thyristor
Mutual inductance occurs for the junction of work(compensation circuit.The invention can not need to carry out power benefit exactly according to actual use in circuit
Repay, and in supply line's voltage instability can not normal use, uncontrollable motor speed and moment of torsion.And traditional approach
Under power back-off equipment due to can not with variable-frequency governor coordinate use, cause power attenuation larger.
The content of the invention
It is an object of the invention to provide a kind of intelligent load-balancing device, and motor parameter can be made to tend to and bear in real time
The state of load rate dynamic equilibrium, the unnecessary torque of motor is reduced, possess splendid energy-saving effect, and motor can be adjusted
Torque, the load current of distribution transformer, distribution line can be reduced, so as to reduce unwanted losses, improve whole electricity system
Power factor；Driver QD can play a part of normal soft start, secondly can be with linear regulation motor input power
Loss is reduced, and driver QD and isolating transformer Tb collocation uses, and is worked in high capacity rate using isolating transformer Tb,
In low-load rate, isolating transformer Tb and driver QD work simultaneously, can enter one under normal circumstances ensureing motor power (output)
Step reduces loss.
The purpose of the present invention is achieved through the following technical solutions：
A kind of intelligent load-balancing device, including sampling module SIG-E, main power source input La, Voltage stabilizing module Ta, isolation change
Depressor Tb, power detecting module, reference ground end N, master controller, compensating switch KM, compensating module CR, driver QD and main electricity
Source output terminal Lb, the Voltage stabilizing module Ta power output end connection sampling module SIG-E power input, the benchmark connect
Input of the output end of ground terminal N and power detecting module respectively with sampling module SIG-E is connected, the main power source input La
Isolating transformer Tb, the sampling module SIG-E output end connection master controller are provided between main power source output end Lb,
The output end connection compensating switch KM of master controller control terminal, one end of the compensating switch KM is connected to power detecting module
Between main power source output end Lb, the other end connection compensating module CR, the isolating transformer Tb of the compensating switch KM are
The transformer of adjustable zero point, the isolating transformer Tb are arranged between power detecting module and compensating switch KM, the isolation
Transformer Tb input is connected with reference ground end N, the control signal input and master controller of the isolating transformer Tb
Signal output part connection, driver QD, the driving are provided between the isolating transformer Tb and main power source output end Lb
Device QD is located between compensating switch KM and main power source output end Lb, and being connected in parallel to driver QD on the driver QD keeps apart
Close, one end of the driver QD disconnecting switch is connected between driver QD input and compensating switch KM, the driving
The other end of device QD disconnecting switch is connected to driver QD output end.
As the further optimization of the technical program, a kind of intelligent load-balancing device of the present invention, the isolating transformer Tb
Including transformer coil group, two-way interlocking contact device and barrier assembly, the transformer coil group include three primary coils and
Three secondary coils being oppositely arranged respectively with three primary lines, input and the main power source input of three primary coils
La connections, the output end of three primary coils are connected with main power source output end Lb, one end of three secondary coils with
The N connections of reference ground end, the other end of three secondary coils and are connected between two-way interlocking contact device and barrier assembly,
The two-way interlocking contact device includes two Switch input terminals and two Switch output terminals, described two Switch input terminals
One end connection not being connected with a secondary coil with reference ground end N, described two Switch output terminals connect one respectively
The output end and reference ground end N, described two Switch input terminals of individual primary coil are connected with the input of barrier assembly,
The two-way interlocking contact device and barrier assembly are each provided with three, and the output end of three barrier assemblies is and reference ground
Hold N connections.
As the further optimization of the technical program, a kind of intelligent load-balancing device of the present invention, the Switch output terminal
Fuse I is provided between the output end of primary coil, the Switch input terminal and switch of the two-way interlocking contact device are defeated
Go out between terminal be series connection double contact switch.
As the further optimization of the technical program, a kind of intelligent load-balancing device of the present invention, the letter of the driver QD
The output end of number input and master controller connects.
As the further optimization of the technical program, a kind of intelligent load-balancing device of the present invention, the driver QD isolation
The signal input part of switch and the output end of master controller connect.
As the further optimization of the technical program, a kind of intelligent load-balancing device of the present invention, the power detecting module
Including voltage detecting end FU and idle test side TA, the input of the voltage detecting end FU includes three voltage detecting end FU
Son, three voltage detecting end FU connect three power transmission lines of three-phase alternating current respectively, and the idle test side TA includes three
Idle test side TA, three idle test side TA are provided with inductance coil, and three inductance coils are wrapped in three-phase respectively
On three power transmission lines of alternating current, the voltage detecting end FU and idle test side TA output end connect sampling module respectively
SIG-E input.
As the further optimization of the technical program, a kind of intelligent load-balancing device of the present invention, three voltage detectings
Fuse II is provided between end FU and three power transmission lines of three-phase alternating current.
As the further optimization of the technical program, a kind of intelligent load-balancing device of the present invention, the sampling module SIG-E
Output end be connected with LCD display module.
As the further optimization of the technical program, a kind of intelligent load-balancing device of the present invention, inside the master controller
It is provided with clock timing module.
As the further optimization of the technical program, a kind of intelligent load-balancing device of the present invention, the compensating module CR bags
Multiple compensators are included, three groups of compensating electric capacities are provided with compensator, the compensating electric capacity is composed in parallel by multiple electric capacity, compensation electricity
Resistance is connected in parallel in appearance.
As the further optimization of the technical program, a kind of intelligent load-balancing device of the present invention, three groups of compensating electric capacities
Input be connected with compensating switch KM, the input of first group of compensating electric capacity is connected with the output end of the 3rd group of compensating electric capacity,
The output end of first group of compensating electric capacity is connected with the input of second group of compensating electric capacity, the output end of second group of compensating electric capacity and the
The input connection of three groups of compensating electric capacities.
A kind of intelligent load-balancing device of the invention has the beneficial effect that：
A kind of intelligent load-balancing device of the present invention, used by driver QD and compensating module CR coordination, electricity can be made
Motivation realizes that variable frequency low speed operates in the case of low-load, to realize maximum energy-saving effect；Be provided with sampling module SIG-E,
Power detecting module and compensating switch KM, compensating module CR work can be accurately controlled according to the working condition of circuit devcie,
It is possible to prevente effectively from parallel resonance harmonic scale-up problem；The three-phase of motor can be measured in real time by sampling module SIG-E
Voltage, electric current, active power, reactive power, apparent energy, power factor, load characteristic, frequency, and pass through LCD display module
Indicate current motor load rate, and four-quadrant shows power, and personnel can be prompted to be adjusted transformer with
Meet that circuit uses needs；Isolating transformer Tb is provided with, circuit voltage can be adjusted in real time according to input voltage, be met with this
Compensating module CR power demand and regulation motor torque；Fuse is provided with, can effectively prevent supply voltage overload from making
Damaged into compensating switch KM or compensating module CR；When the frequent start-stop of motor, master controller is interrupted by clocking capability and compensated
Module CR work, it can effectively prevent from compensating excessive, the problem of motor voltage overloads；Can to frequency, voltage, electric current,
Power, power factor, current/voltage degree of unbalancedness, load characteristic, voltage/current percent harmonic distortion, requirement, the parameter of phase sequence
Set out-of-limit, alarm is carried out by master controller, and records time of origin and the motor running time of alert event；
Master controller can change according to the power supply state and load factor of motor, and band carries dynamic regulation isolating transformer Tb
The method of operation, avoid torque deficiency and low load with strong power phenomenon, make motor parameter in real time tend to load factor dynamic
The state of balance, reduce the unnecessary torque of motor；Significantly drop to pole underloading or non-loaded feelings in motor load rate
Under condition by controllable silicon loop dynamic adjust power supply parameter, be allowed to load factor real-time matching, reduce the unnecessary torque of motor；This
The power factor of whole electricity system can also be improved by driving electrical equipment, can reduce distribution transformer, the load current of supply line,
So as to reduce unwanted losses, the temperature rise of whole supply line is reduced, there is higher economic use value, improve supply line
Security；
Driver QD can play a part of normal soft start, secondly can be reduced with linear regulation motor input power
Loss, and driver QD and isolating transformer Tb collocation uses, and is worked in high capacity rate using isolating transformer Tb, low
Isolating transformer Tb and driver QD work simultaneously during load factor, can further be dropped under normal circumstances ensureing motor power (output)
Low-loss.
Brief description of the drawings
The present invention will be further described in detail with specific implementation method below in conjunction with the accompanying drawings.
Fig. 1 is the hardware architecture diagram of the present invention；
Fig. 2 is the integrated circuit schematic diagram of the present invention；
Fig. 3 is isolating transformer Tb of the present invention elementary diagram compensating module CR elementary diagram；
Fig. 4 is the elementary diagram of driver QD and driver QD disconnecting switch of the present invention；
Fig. 5 is compensating module CR of the present invention elementary diagram；
Fig. 6 is sampling module SIG-E of the present invention elementary diagram；
Fig. 7 is the pin schematic diagram of master controller of the present invention；
Fig. 8 is the communication module partial schematic diagram one between master controller and sampling module SIG-E of the present invention；
Fig. 9 is the communication module partial schematic diagram two between master controller and sampling module SIG-E of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment one：
With reference to Fig. 1-8 illustrate present embodiment, below description be merely illustrative, never be used as to the present invention and
Its any restrictions applied or used, it should be noted that：Similar label and letter represents similar terms in following accompanying drawing.
A kind of intelligent load-balancing device, including sampling module SIG-E, main power source input La, Voltage stabilizing module Ta, isolation change
Depressor Tb, power detecting module, reference ground end N, master controller, compensating switch KM, compensating module CR, driver QD and main electricity
Source output terminal Lb, the main power source input La include La1, La2 and La3 end of the three-phase line of connection three-phase alternating current respectively
Son, the Voltage stabilizing module Ta are used as system light current power supply by AC-DC rectification and decompression, and Voltage stabilizing module Ta can be with
Battery and corresponding voltage-stabilizing device using processing, Voltage stabilizing module Ta power output end connection sampling module SIG-E electricity
The output end of source input, the reference ground end N and power detecting module connects with sampling module SIG-E input respectively
Connect, the isolating transformer Tb is arranged between power detecting module and compensating switch KM, and the isolating transformer Tb is adjustable
Transformer of zero point, the input of the isolating transformer Tb are connected with reference ground end N, the control letter of the isolating transformer Tb
The signal output part of number input and master controller connects, and being the advantages of the isolating transformer Tb more common transformer can be with
Surge voltage is eliminated, and contributes to repid discharge under pressure-lowering condition, while is more applicable for each operating mode of motor and uses, can be with
Solve the problems, such as not realizing that the full torque of motor starts during the work of power back-off equipment.Reference ground end N is as measurement electricity
The reference voltage of pressure and detection alternating current sine frequency spectrum, the main power source input La connects with main power source output end Lb, described
Main power source output end Lb includes Lb1, Lb2 and Lb3, the output end connection compensating switch KM of master controller control terminal, institute
2KM, 3KM and 4KM that compensating switch KM includes being connected in parallel are stated, master controller calculates according to the input data of power detecting module
Magnitude of voltage, reactive power and line power factor, and foundation and control isolating transformer in this, as control compensating switch KM
The foundation of Tb transformation values, one end of the compensating switch KM are connected between power detecting module and main power source output end Lb, institute
State compensating switch KM other end connection compensating module CR；When power input voltage is relatively low, to ensure the normal work of electricity consumption motor
Make, main controller controls compensating switch KM, which disconnects, prevents that compensating more degree causes capacitors self-healing to strengthen, and capacitance loss is accelerated, electric capacity
A series of problems, such as device fails ahead of time, and master controller can control isolating transformer Tb to boost, the isolating transformer Tb
Controlling switch be positive safe NC822 series switch, the control signal input of isolating transformer Tb controlling switch and master control
The signal output part connection of device processed, prevent that compensating module CR is accessed when voltage is relatively low causes motor torque insufficient；Work as main control
When device is by the increase that is calculated that system voltage is stable and motor operates, motor is idle enough, main controller controls compensation is opened
Close KM to connect, compensating module CR access circuits, the part reactive power of inductive reactance consumption can be supplied, distribution can be reduced with this
The load current of transformer, distribution line；The conductor cross-section area of distribution line can be reduced, reduce the appearance of enterprise's distribution transformer
Amount, reduce enterprise's distribution transforming and the active loss of distribution network；Because the present apparatus is arranged on distribution line terminal, reduction can be passed through
The mode of whole supply line electric current, reduces transmission losses, has maximized non-work economic equivalent；Simultaneously in compensating module CR
In the presence of, the starting current of motor can be reduced, the startup loss of motor is reduced, is advantageous to improve the use of motor
Life-span；It is two-way anti-that driver QD, the driver QD are provided between the isolating transformer Tb and main power source output end Lb
The drive electrical equipment in controllable silicon loop or frequency conversion loop in parallel, the driver QD be located at compensating switch KM and main power source output end Lb it
Between, the compensating switch KM is the CK3 collection of contact devices in Changshu, compensating switch KM control signal input and master controller
Signal output part is connected, and driver QD disconnecting switch 5KM1, the driver QD isolation are connected in parallel on the driver QD
Switch 5KM1 one end is connected between driver QD input and compensating switch KM, the driver QD disconnecting switch 5KM1
Other end connection driver QD output end, when motor start-up reaches full rotating speed, i.e., voltage is 380V or so, and electric current is less than
During rated current, staff or main controller controls driver QD disconnecting switch 5KM1 are connected, and are kept apart by driver QD
Close 5KM1 driver QD is short-circuit, driver QD is worked；When sampling module SIG-E is by being calculated the negative of motor
Load rate is relatively low, when being less than about 10%, controls driver QD disconnecting switch 5KM1 to disconnect by staff or sampling module SIG-E,
Make driver QD work operations, control motor to carry out slow-speed of revolution operation by driver QD, maximum section is realized with this
Energy；When sampling module SIG-E is raised by the way that the load factor of motor is calculated, when about 20%, by staff or adopt
Egf block SIG-E control driver QD disconnecting switch 5KM1 is connected, and makes driver QD break-ofves again.
The model STM32F103C8T6 for the controller chip that the master controller uses, the sampling module SIG-E's
Model AcuvimII type three-phase power detection devices, AcuvimII series multifunctionals network electric power instrument is using most modern micro-
Processor and Digital Signal Processing design.Gather comprehensive three phase electrical/display, energy accumulation, electric power product
Matter analysis, fault alarm, trend record, quality of power supply logout, waveform recording, time-sharing measurement and network service are.
Giant-screen, high-resolution liquid crystal display fully meet your vision requirement, and graceful, bright backlight, which is shown, makes you under faint light
Also measurement data can easily be consulted；AcuvimII series of products can be used as instrument to be used alone, a large amount of traditional analog meters of substitution
Table, the anterior member of electric power monitoring system is can act also as, to realize remote data acquisition and control；AcuvimII series instruments
Due to introducing Digital Signal Processing so that online power quality analysis becomes possibility.Each phase voltage, electric current
Total harmonic distortion factor, voltage crest factor, current coefficient, each harmonic component and voltage, current unbalance factor can be surveyed in real time
Amount, master controller and sampling mould are realized by the RS-485 communication interfaces built in AcuvimII series multifunctional network electric power instruments
Communication between block SIG-E.
The signal input part of the driver QD and the output end of master controller connect, and can pass through master controller realization pair
Driver QD intelligent control；The signal input part of the driver QD disconnecting switch 5KM1 and the output end of master controller connect
Connect, the intelligent control to driver QD disconnecting switch 5KM1 can be realized by master controller；The driver QD is by two-way anti-
Controllable silicon in parallel is formed, and the controllable silicon is selected
SEMIKRON-SKKT106/16E series controllable silicons.
The isolating transformer Tb includes transformer coil group, two-way interlocking contact device 1KM and barrier assembly, the transformation
Device coil group includes three primary coils and three secondary coils being oppositely arranged respectively with three primary lines, three primary
Input ua1, ub1 and uc1 of coil are connected with La1, La2 and La3 on main power source input La respectively, three primary
Output end ua2, ub2 and uc2 of coil are connected with Lb1, Lb2 and Lb3 on main power source output end Lb respectively, three secondary
One end ua4, ub4 and uc4 of coil are connected with reference ground end N, the other end ua3, ub3 of three secondary coils and
Uc3 is connected between two-way interlocking contact device 1KM and barrier assembly, and the two-way interlocking contact device 1KM is provided with three, respectively
For 1KM1,1KM2 and 1KM3 in figure, the two-way interlocking contact device 1KM includes two Switch input terminals and two switches are defeated
Go out terminal, described two Switch input terminals are not with a secondary coil with one end that reference ground end N is connected as in figure
Ua3 or Ub3 or Uc3 connections, described two Switch output terminals connect the output end and reference ground of a primary coil respectively
N is held, described two Switch input terminals are connected with the input of barrier assembly, the two-way interlocking contact device 1KM and isolation
Component is each provided with three, and the output end of three barrier assemblies is connected with reference ground end N, and the barrier assembly is by more
Individual capacitor element in parallel and isolation resistance in parallel therewith composition；As shown in figure 4, described 1KM1,1KM2 and 1KM3 model
It is the CK3 collection of contact devices in Changshu, the signal output part of master controller and 1KM1,1KM2 and 1KM3 control signal input
Connection, when 1KM1 is connected, ua3, Ra2, Ra1 and Lb1 composition path I, ua3, barrier assembly and reference ground end N form logical
Road II, ua3, Ra4, Ra3 and reference ground end N form path III, when 1KM2 and 1KM3 are connected with this similarly；Path I is by ua3
Secondary coil voltage as offset voltage, to compensate the Lb1 on main power source output end Lb；Path II is made through barrier assembly
With playing voltage stabilizing, filtering and capacitive reactance compensating action, under the synergy of path I and path II, can solve traditional transformer
Start to reach the full torque of motor, start overtension, kwh loss is big, the problems such as voltage pulsation shakiness；Path III is used for
The electric energy inside barrier assembly is consumed, is advantageous to electric capacity repid discharge.
Fuse I, output switching terminal are provided between the output end ua2 of the Switch output terminal Ra1 and primary coil
The output end of fuse I, Switch output terminal Rc1 and primary coil is provided between sub- Rb1 and primary coil output end ub2
Fuse I is provided between uc2, circuit protection is carried out with this.
It is that the double-contact of series connection is opened between the Switch input terminal and Switch output terminal of the two-way interlocking contact device
Close, the partial pressure by way of setting up switch contact, avoid switch contact from damaging, improve the service life of two-way interlocking contact device.
The power detecting module includes voltage detecting end FU and idle test side TA, the input of the voltage detecting end FU
End includes three voltage detecting end FU FU1, FU2 and FU3, and three voltage detecting end FU FU1, FU2 and FU3 connect three respectively
Three power transmission lines of cross streams electricity, the idle test side TA include three idle test side TA TAa, TAb and TAc, three
Inductance coil is provided with idle test side TA TAa, TAb and TAc, three inductance coils are wrapped in three-phase alternating current respectively
Three power transmission lines on, three idle test side TA TAa, TAb and TAc produce corresponding sensing in alternating current galvanization
Electromotive force, in this, as the sinusoidal spectrum signal of alternating current, the voltage detecting end FU and idle test side TA output end point
Not Lian Jie sampling module SIG-E input, sampling module SIG-E by this signal calculation circuit power factor, as whether
Compensating switch KM control foundation is connected in control.
Fuse II is provided between three power transmission lines of three voltage detecting end FU and three-phase alternating current, with
This is protected to sampling module SIG-E and voltage detecting end FU, prevents excessively stream from burning circuit devcie.
The output end of the sampling module SIG-E is connected with LCD display module, and sampling module SIG-E will be calculated
Magnitude of voltage, power factor, useful work and idle work numerical value, which are sent in LCD display module, to be shown, is easy to plant maintenance personnel real
When check and understand working state of system；Meanwhile LCD display module is displayed for magnitude of voltage and isolating transformer Tb change
Numerical value is pressed, by LCD display module personnel can be prompted to adjust isolating transformer Tb manually to meet the use needs of circuit.
For needing frequent starting and stopping motor, because motor is risen in the changing-over of power supply two-phase or quickly, frequently or the stopping time,
Motor is still operated with higher rotation speed because of inertia after dump, and the capacitor of compensation turns into motor magnetoelectricity by electric discharge
Stream, makes electric motor operation in generating state.The voltage that now motor is sent and the general phase of supply voltage and then put into
Difference, will produce big impact torque in a flash, compensating module CR and motor damages be caused with this, to avoid problems from sending out
Raw, heretofore described master controller is internally provided with clock timing module, and master controller records the motor starting and stopping time, and
Time cumulation is carried out by clock timing module, increases time threshold Tmin in main controller controls program, such as motor two
The secondary difference for starting time and a downtime before motor is less than time threshold Tmin, then control disconnects compensating switch KM,
This starts compensating module CR and is not involved in work；Such as the difference of a downtime before motor restarting time and motor
More than time threshold Tmin, then control connects compensating switch KM, makes compensating module CR normal works；The time threshold Tmin should
Electric capacity electricity in the complete consumption and compensation module CR of resistance in adequate remedy module CR.
The compensating module CR includes multiple compensators, and three groups of compensating electric capacities, the compensating electric capacity are provided with compensator
Composed in parallel by multiple electric capacity, resistance is connected in parallel in compensating electric capacity；When idle increase in circuit, compensating module CR starts
Work, multiple electric capacity trickle charges, electric discharge are most of to the reactive current needed for motor to be supplied by multiple electric capacity, can with this
To improve the power factor of whole supply line, resistance in parallel is used to make in consumption electric capacity in motor failure in compensating electric capacity
The electric energy of storage, two voltage superpositions cause the voltage overload of motor when preventing next be powered.
The input of three groups of compensating electric capacities is connected with compensating switch KM, the input and the 3rd of first group of compensating electric capacity
The output end connection of group compensating electric capacity, the output end of first group of compensating electric capacity are connected with the input of second group of compensating electric capacity, the
The output end of two groups of compensating electric capacities is connected with the input of the 3rd group of compensating electric capacity, and the discharge and recharge that each electric capacity can be improved with this is imitated
Rate, and be advantageous to the electric energy for making quick consumption capacitor memory storage in shutdown.
A kind of drive electrical equipment with auto-transformer of the present invention, its operation principle are：When in two-way interlocking contact device 1KM
1KM1 connect when, transformer coil ua3, Ra2, Ra1 and Lb1 composition path I, ua3, barrier assembly and reference ground end
N forms path II, and ua3, Ra4, Ra3 and reference ground end N of transformer coil form path III, when 1KM2 and 1KM3 are connected with
This is similarly；Path I is using the secondary coil voltage at ua3 as offset voltage, to compensate the Lb1 on main power source output end Lb；
Path II acts on through barrier assembly, plays voltage stabilizing, filtering and capacitive reactance compensating action, under the synergy of path I and path II,
Can solve traditional transformer and start to reach the full torque of motor, start overtension, kwh loss is big, and voltage pulsation is unstable
The problems such as；Path III is used to consume the electric energy inside barrier assembly, is advantageous to electric capacity repid discharge；
The present apparatus be arranged on electricity consumption motor with regard to inlet side, when power input voltage is relatively low, to ensure electricity consumption motor just
Often work, main controller controls compensating switch KM disconnect, and prevent that compensating more degree causes capacitors self-healing to strengthen, capacitance loss adds
Hurry up, capacitor ahead of time fail a series of problems, such as, and master controller can control isolating transformer Tb boost, prevent voltage compared with
Compensating module CR is accessed when low causes motor torque insufficient；When master controller is stable and enough by the way that system voltage is calculated
When motor operating, motor is idle increase, main controller controls compensating switch KM is connected, compensating module CR access circuits, can be with
The part reactive power of inductive reactance consumption is supplied, the load current of distribution transformer, distribution line can be reduced with this；It can reduce
The conductor cross-section area of distribution line, reduce the capacity of enterprise distribution transformer, reduce the active of enterprise's distribution transforming and distribution network
Loss；Because the present apparatus is arranged on distribution line terminal, transmission of electricity can be reduced by way of reducing whole supply line's electric current
Loss, has maximized non-work economic equivalent；Simultaneously in the presence of compensating module CR, the startup electricity of motor can be reduced
Stream, the startup loss of motor is reduced, be advantageous to improve the service life of motor；For needing frequent starting and stopping motor, because
For motor the changing-over of power supply two-phase or it is quick, frequently rise or the stopping time, motor is because inertia is still with higher turn after dump
Speed operating, the capacitor of compensation turn into motor magnetoelectricity stream by electric discharge, make electric motor operation in generating state.It is now electronic
The voltage that machine is sent is different from the general phase of the supply voltage and then put into, big impact torque will be produced in a flash, with this
Compensating module CR and motor damages are caused, to avoid problems, heretofore described master controller is internally provided with
Clock timing module, the master controller record motor starting and stopping time, and time cumulation is carried out by clock timing module, in master
Increase time threshold Tmin in controller control program, such as a downtime before motor restarting time and motor
Difference is less than time threshold Tmin, then control disconnects compensating switch KM, and this starts compensating module CR and is not involved in work；It is such as electronic
The difference of machine restarting time and a downtime before motor are more than time threshold Tmin, then compensating switch is connected in control
KM, make compensating module CR normal works；The time threshold Tmin answers the complete consumption and compensation mould of resistance in adequate remedy module CR
Electric capacity electricity in block CR；
The output end of the sampling module SIG-E is connected with LCD display module, and sampling module SIG-E will be calculated
Magnitude of voltage, power factor, useful work and idle work numerical value, which are sent in LCD display module, to be shown, is easy to plant maintenance personnel real
When check and understand working state of system；Meanwhile LCD display module is displayed for magnitude of voltage and isolating transformer Tb change
Numerical value is pressed, by LCD display module personnel can be prompted to adjust isolating transformer Tb manually to meet the use needs of circuit；
The isolating transformer Tb is arranged between power detecting module and compensating switch KM；Compensating module CR is ensured with this
It is operated in satisfactory voltage range, avoids brownout from causing motor torque deficiency or overtension to cause to compensate mould
Block CR or motor damages；
The control signal input of the isolating transformer Tb and the signal output part of master controller connect, and master controller leads to
Cross input voltage value and automatically control isolating transformer Tb work, can both avoid brownout from causing motor torque insufficient, again
Motor torque can be controlled in real time as desired by transformation, put forward the practicality and reliability for having given birth to the present apparatus；
The advantages of isolating transformer Tb more common transformer, is that surge voltage can be eliminated, and helps to be depressured
Under the conditions of repid discharge, while be more applicable for each operating mode of motor and use, can have when solving the work of power back-off equipment without
Method realizes the problem of full torque of motor starts；
When motor start-up reaches full rotating speed, i.e., voltage is 380V or so, when electric current is less than rated current, staff or
Main controller controls driver QD disconnecting switch 5KM1 is connected, by driver QD disconnecting switch 5KM1 that driver QD is short-circuit,
Driver QD is set to work；When master controller is relatively low by the load factor that motor is calculated, when being less than about 10%, by work
Make personnel or main controller controls driver QD disconnecting switch 5KM1 disconnects, make driver QD work operations, pass through driver QD
Control motor to carry out slow-speed of revolution operation, maximum energy-conservation is realized with this；When master controller is by being calculated motor
Load factor rise, when about 20%, connected by staff or main controller controls driver QD disconnecting switch 5KM1, then
It is secondary to make driver QD break-ofves；Driver QD can play a part of normal soft start first, secondly can be with linear regulation
Motor input power reduces loss, and driver QD and isolating transformer Tb collocation uses, when load factor is higher, such as
When load factor is 70%, isolating transformer Tb starts work, and dynamically band carries regulation motor torque；It is relatively low in load factor, such as
When load factor is 20%, isolating transformer Tb and driver QD work simultaneously, are that motor input is corresponding with minimum loss
Input power, the low-loss purpose of drop is reached with this.
Certainly, described above is not limitation of the present invention, and the present invention is also not limited to the example above, the art
The variations, modifications, additions or substitutions that those of ordinary skill is made in the essential scope of the present invention, fall within the guarantor of the present invention
Protect scope.
Claims (10)
1. a kind of intelligent load-balancing device, including sampling module SIG-E, main power source input La, Voltage stabilizing module Ta, isolation transformation
Device Tb, power detecting module, reference ground end N, master controller, compensating switch KM, compensating module CR, driver QD and main power source
Output end Lb, it is characterised in that：The power output end connection sampling module SIG-E of Voltage stabilizing module Ta power input,
Input of the output end of the reference ground end N and power detecting module respectively with sampling module SIG-E is connected, the main electricity
The output end that isolating transformer Tb, the sampling module SIG-E are provided between source input La and main power source output end Lb connects
Master controller is connect, the output end connection compensating switch KM of main control module control terminal, one end of the compensating switch KM is connected to
Between power detecting module and main power source output end Lb, the other end of compensating switch KM connection compensating module CR, it is described every
It is arranged on from transformer Tb between power detecting module and compensating switch KM, the input of the isolating transformer Tb connects with benchmark
Ground terminal N connections, the control signal input of the isolating transformer Tb and the signal output part of master controller connect, the isolation
Driver QD, the driver QD are provided between transformer Tb and main power source output end Lb and is located at compensating switch KM and main power source
Between output end Lb, driver QD disconnecting switch is connected in parallel on the driver QD, the driver QD disconnecting switch
One end is connected between driver QD input and compensating switch KM, and the other end of the driver QD disconnecting switch is connected to
Driver QD output end.
A kind of 2. intelligent load-balancing device according to claim 1, it is characterised in that：The isolating transformer Tb includes becoming
Transformer coil group, two-way interlocking contact device and barrier assembly, the transformer coil group include three primary coils and respectively with
Three secondary coils that three primary lines are oppositely arranged, input and the main power source input La of three primary coils connect
Connect, the output end of three primary coils is connected with main power source output end Lb, one end of three secondary coils and benchmark
Earth terminal N connections, the other end of three secondary coils are connected between two-way interlocking contact device and barrier assembly, described double
Road interlocking contact device includes two Switch input terminals and two Switch output terminals, and described two Switch input terminals are with one
One end connection that individual secondary coil is not connected with reference ground end N, described two Switch output terminals connect a primary respectively
The output end and reference ground end N, described two Switch input terminals of coil are connected with the input of barrier assembly, described double
Road interlocking contact device and barrier assembly are each provided with three, and the output end of three barrier assemblies connects with reference ground end N
Connect, the barrier assembly isolation resistance in parallel by multiple capacitor elements in parallel and therewith forms.
A kind of 3. intelligent load-balancing device according to claim 2, it is characterised in that：The two-way interlocking contact device is opened
Close and be provided with fuse I, the switch input terminal of the two-way interlocking contact device between lead-out terminal and the output end of primary coil
It is the double contact switch of series connection between son and Switch output terminal.
A kind of 4. intelligent load-balancing device according to claim 1, it is characterised in that：The signal input of the driver QD
End is connected with the output end of master controller.
A kind of 5. intelligent load-balancing device according to claim 1 or 4, it is characterised in that：The driver QD keeps apart
The signal input part of pass and the output end of master controller connect.
A kind of 6. intelligent load-balancing device according to claim 1, it is characterised in that：The power detecting module includes electricity
Press test side FU and idle test side TA, the input of the voltage detecting end FU includes three voltage detecting end FU, three
Voltage detecting end FU connects three power transmission lines of three-phase alternating current respectively, and the idle test side TA includes three idle detections
TA, three idle test side TA are held to be provided with inductance coil, three inductance coils are wrapped in three-phase alternating current respectively
On three power transmission lines, the voltage detecting end FU and idle test side TA output end connect the defeated of sampling module SIG-E respectively
Enter end.
A kind of 7. intelligent load-balancing device according to claim 1, it is characterised in that：The sampling module SIG-E's is defeated
Go out end and be connected with LCD display module.
A kind of 8. intelligent load-balancing device according to claim 1, it is characterised in that：The master controller is internally provided with
Clock timing module.
A kind of 9. intelligent load-balancing device according to claim 1, it is characterised in that：The compensating module CR includes multiple
Compensator, three groups of compensating electric capacities is provided with compensator, the compensating electric capacity is composed in parallel by multiple electric capacity, in compensating electric capacity simultaneously
Connection is connected with resistance.
A kind of 10. intelligent load-balancing device according to claim 9, it is characterised in that：Three groups of compensating electric capacities it is defeated
Entering end to be connected with compensating switch KM, the input of first group of compensating electric capacity is connected with the output end of the 3rd group of compensating electric capacity, and first
The output end of group compensating electric capacity is connected with the input of second group of compensating electric capacity, the output end of second group of compensating electric capacity and the 3rd group
The input connection of compensating electric capacity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017110437348 | 2017-10-31 | ||
| CN201711043734 | 2017-10-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107834939A true CN107834939A (en) | 2018-03-23 |
| CN107834939B CN107834939B (en) | 2023-11-24 |
Family
ID=61641525
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711260648.2A Active CN107834939B (en) | 2017-10-31 | 2017-12-04 | Intelligent load balancer |
| CN201721663652.9U Active CN207427022U (en) | 2017-10-31 | 2017-12-04 | A kind of intelligent load-balancing device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721663652.9U Active CN207427022U (en) | 2017-10-31 | 2017-12-04 | A kind of intelligent load-balancing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN107834939B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471117A (en) * | 2018-04-13 | 2018-08-31 | 哈尔滨兴亚技术有限公司 | A kind of device improving electricity system efficiency |
| CN110187298A (en) * | 2019-05-30 | 2019-08-30 | 海盐星创电子有限公司 | A kind of the electronic load automatic patching system and its matching process of current loop |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834939B (en) * | 2017-10-31 | 2023-11-24 | 哈尔滨兴亚技术有限公司 | Intelligent load balancer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089215U (en) * | 1991-02-09 | 1991-11-20 | 锦州电力电容器厂金属化电容器厂 | Multifunction reactive power on-site compesator for motor |
| CN101020425A (en) * | 2007-03-28 | 2007-08-22 | 中国南车集团株洲电力机车研究所 | Mixed static synchronous reactive compensator |
| CN101340096A (en) * | 2008-08-07 | 2009-01-07 | 上海交通大学 | Electric reactive compensating controller |
| CN206302161U (en) * | 2017-01-11 | 2017-07-04 | 哈尔滨理工大学 | A kind of power network low pressure harmonics restraint and reactive power compensator |
| CN207427022U (en) * | 2017-10-31 | 2018-05-29 | 哈尔滨兴亚技术有限公司 | A kind of intelligent load-balancing device |
-
2017
- 2017-12-04 CN CN201711260648.2A patent/CN107834939B/en active Active
- 2017-12-04 CN CN201721663652.9U patent/CN207427022U/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089215U (en) * | 1991-02-09 | 1991-11-20 | 锦州电力电容器厂金属化电容器厂 | Multifunction reactive power on-site compesator for motor |
| CN101020425A (en) * | 2007-03-28 | 2007-08-22 | 中国南车集团株洲电力机车研究所 | Mixed static synchronous reactive compensator |
| CN101340096A (en) * | 2008-08-07 | 2009-01-07 | 上海交通大学 | Electric reactive compensating controller |
| CN206302161U (en) * | 2017-01-11 | 2017-07-04 | 哈尔滨理工大学 | A kind of power network low pressure harmonics restraint and reactive power compensator |
| CN207427022U (en) * | 2017-10-31 | 2018-05-29 | 哈尔滨兴亚技术有限公司 | A kind of intelligent load-balancing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471117A (en) * | 2018-04-13 | 2018-08-31 | 哈尔滨兴亚技术有限公司 | A kind of device improving electricity system efficiency |
| CN110187298A (en) * | 2019-05-30 | 2019-08-30 | 海盐星创电子有限公司 | A kind of the electronic load automatic patching system and its matching process of current loop |
Also Published As
| Publication number | Publication date |
|---|---|
| CN207427022U (en) | 2018-05-29 |
| CN107834939B (en) | 2023-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101807799B (en) | Super capacitor energy storage type power quality compensator | |
| CN102709917B (en) | A kind of dynamic reactive compensation device controlling high pressure based on IGBT | |
| CN108321815A (en) | A kind of low-voltage network utility power quality control system and method | |
| CN207427022U (en) | A kind of intelligent load-balancing device | |
| CN109406936B (en) | Alarm protection module for charging pile | |
| CN109347182B (en) | Charging pile control unit | |
| CN207427023U (en) | A kind of electric terminal drive electric appliance | |
| CN207442725U (en) | A kind of drive electric appliance with adjusting zero point type isolating transformer | |
| CN109378887B (en) | Charging pile control system | |
| CN205319701U (en) | Capacitive alternating voltage adjusting device and capacitive pressure regulating power supply unit | |
| CN103296687B (en) | High-efficiency intelligent duplicate voltage compensation power saver | |
| CN204241587U (en) | The variator low energy-consumption load testing device of high voltage converter | |
| CN103178527A (en) | Voltage deviation adjustor | |
| CN203025313U (en) | High-voltage variable-frequency series resonance test power supply | |
| CN107453360A (en) | A kind of power supply quality optimizes device and method | |
| CN217215978U (en) | Reactive power and harmonic wave dynamic tracking compensation device applied to oil pumping unit | |
| CN105470969A (en) | Capacitive AC voltage regulating device, power supply equipment and AC voltage regulating method | |
| CN108471117A (en) | A kind of device improving electricity system efficiency | |
| CN205791529U (en) | A kind of power supply quality optimizes device | |
| CN207410267U (en) | A kind of drive electric appliance with compensation auto-transformer | |
| CN109301846A (en) | Uneven low-voltage controlling device and method | |
| CN106849105A (en) | Low-voltage distributing line intelligent regulating device | |
| CN109546684B (en) | Micro-grid power supply system | |
| CN109361215B (en) | High-voltage protection module | |
| CN109327064B (en) | Charging pile group current distribution system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 25, 2nd Floor, 1st to 2nd Floor, Building S1, Surrounding Areas of Xizhan Street, Hexie Avenue, Harbin Street, and Wuwei Road, Nangang District, Harbin City, Heilongjiang Province, 150006 Patentee after: Harbin jingduo Technology Co.,Ltd. Address before: No.118 xidazhi street, Nangang District, Harbin City, Heilongjiang Province Patentee before: HARBIN XINGYA TECHNOLOGY Co.,Ltd. |