CN206575168U - A kind of intelligent capacitor compensation device - Google Patents
A kind of intelligent capacitor compensation device Download PDFInfo
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- CN206575168U CN206575168U CN201720281190.8U CN201720281190U CN206575168U CN 206575168 U CN206575168 U CN 206575168U CN 201720281190 U CN201720281190 U CN 201720281190U CN 206575168 U CN206575168 U CN 206575168U
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- 239000003990 capacitor Substances 0.000 title claims abstract description 40
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000005259 measurement Methods 0.000 claims abstract description 22
- 230000035939 shock Effects 0.000 claims abstract description 9
- 238000010891 electric arc Methods 0.000 abstract description 5
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- 238000010586 diagram Methods 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 2
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- 238000012545 processing Methods 0.000 description 2
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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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Abstract
The utility model discloses a kind of intelligent capacitor compensation device, including intelligent measurement and control unit, capacitor fling-cut switch, controller and compensating electric capacity；The intelligent measurement and control unit is communicated to connect with controller, the controller output end is connected with capacitor fling-cut switch, the intelligent measurement and control unit, capacitor fling-cut switch and compensating electric capacity are fixed in insulated case, the capacitor fling-cut switch includes detection circuit and magnetic latching relay, the detection circuit includes voltage transformer, current transformer and protecting against shock electric capacity, and the voltage transformer input, current transformer input and protecting against shock electric capacity are serially connected.The utility model is created and the electrical parameter of network system is acquired by intelligent measurement and control unit and power factor is calculated, compensating electric capacity operating passing zero is realized by capacitor fling-cut switch according to the actual value of power factor, prevent the phenomenon of arc discharge of shoving that conventional compensation device occurs during switching, improve present apparatus service life.
Description
Technical field
The utility model is related to power circuit field, more specifically designs a kind of intelligent capacitor compensation device.
Background technology
This parameter of power factor is used for the height for weighing an electrical system efficiency, the low card of power factor in electricity field
It is used to set up electric field in bright system and the energy in magnetic field is high, i.e., the reactive power in system is high.
The device that motor and transformer etc. are routinely equipped with network system belongs to inductive load, therefore network system is in fortune
Need to provide reactive power to these inductive loads during row.
In this area compensate network system reactive power, improve system power factor technological means, from principle for
Mainly shunt capacitor, and in practical operation it is exactly the switching number that Electric capacity compensation device is controlled using reactive power controller
Amount, realizes the compensating operation of reactive power.But the switching process of existing Electric capacity compensation device relies only on mechanical part progress
There is wiring in operation, therefore the compensation system that is formed of existing Electric capacity compensation device and its peripheral assembly complicated, take empty
Between it is big the shortcomings of, it is right while more seriously Electric capacity compensation device easily occurs shoving and arc phenomenon during switching
Device band carrys out larger infringement, and device easily fails, and reduces the service life of device.
Utility model content
In view of the above-mentioned problems, the technical problems to be solved in the utility model is：
The solution that the utility model solves its technical problem is：
A kind of intelligent capacitor compensation device, including：
Intelligent measurement and control unit：Electrical parameter for detecting network system, calculates network system power factor；
Capacitor fling-cut switch：Switching operation for performing compensating electric capacity；
Controller and compensating electric capacity；
The intelligent measurement and control unit is communicated to connect with controller, and the controller output end is connected with capacitor fling-cut switch,
The intelligent measurement and control unit, capacitor fling-cut switch and compensating electric capacity are fixed in insulated case, the capacitor fling-cut switch
Magnetic latching relay including detection circuit and for controlling compensating electric capacity switching, the detection circuit is serially connected in live wire and zero
Between line, the detection circuit includes voltage transformer, current transformer and protecting against shock electric capacity, the voltage transformer input
End, current transformer input and protecting against shock electric capacity are serially connected, the output end and Current Mutual Inductance of the voltage transformer
The output end of device is connected with controller input respectively, and the magnetic latching relay input is connected with controller output end.
As the further improvement of above-mentioned technical proposal, the intelligent measurement and control unit includes acquisition chip, the collection core
Piece model is CS5460A.
As the further improvement of above-mentioned technical proposal, also include protection location, the protection location is examined including temperature
Module and open phase detection module are surveyed, the temperature detecting module output end is connected with controller input, open phase detection module
It is connected with magnetic latching relay input.
As the further improvement of above-mentioned technical proposal, the temperature detecting module includes model STLM75 TEMPs
Device.
As the further improvement of above-mentioned technical proposal, the open phase detection module includes single phase poaer supply sample circuit, base
Quasi- power supply, comparison circuit, discharge circuit and triggers circuit, the single phase poaer supply sample circuit input and single phase poaer supply interface
It is connected, the single phase poaer supply sample circuit output end is connected with the input of comparison circuit, the signal input interface and benchmark
Power input is connected, and the output end of the reference power supply is connected with single phase poaer supply sample circuit and comparison circuit respectively, institute
The output end for stating comparison circuit is connected with the input of triggers circuit and the input of discharge circuit respectively, the capacitor switching
Switch is connected with discharge circuit and triggers circuit respectively.
The beneficial effects of the utility model are：The utility model is entered by intelligent measurement and control unit to the electrical parameter of network system
Row gathers and calculates power factor, realizes that compensating electric capacity zero passage is thrown by capacitor fling-cut switch according to the actual value of power factor
Cut, prevent the phenomenon of arc discharge of shoving that conventional compensation device occurs during switching, improve present apparatus service life, in addition this reality
It is high with new integrated level, it is easy to wiring to install, while intelligent measurement and control unit, capacitor fling-cut switch and compensating electric capacity are all installed
In an insulated case, reduction occupies space.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing to be used is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present utility model, rather than entirely
Portion's embodiment, those skilled in the art on the premise of not paying creative work, can also obtain it according to these accompanying drawings
His design and accompanying drawing.
Fig. 1 is the overall theory diagram of the utility model Electric capacity compensation device；
Fig. 2 is the schematic diagram that the utility model detects circuit；
Fig. 3 is the utility model insulated case surface structure schematic diagram；
Fig. 4 is the schematic block circuit diagram of the utility model open phase detection module；
Fig. 5 is the circuit diagram of the utility model open phase detection module；
Fig. 6 is the utility model compensating electric capacity input oscillogram；
Fig. 7 is the utility model compensating electric capacity excision oscillogram.
Embodiment
The technique effect of design of the present utility model, concrete structure and generation is carried out below with reference to embodiment and accompanying drawing
Clearly and completely describe, to be completely understood by the purpose of this utility model, feature and effect.Obviously, described embodiment
It is a part of embodiment of the present utility model, rather than whole embodiments, based on embodiment of the present utility model, the skill of this area
The other embodiment that art personnel are obtained on the premise of not paying creative work, belongs to the model of the utility model protection
Enclose.In addition, all connection/annexations being previously mentioned in text, not singly refer to component and directly connect, and refer to can be according to specific reality
Situation is applied, by adding or reducing couple auxiliary, to constitute more excellent draw bail.Each technology in the invention is special
Levy, can be with combination of interactions on the premise of not conflicting conflict.
Reference picture 1, for the excessively mechanization of existing Electric capacity compensation device, and causes compensating electric capacity to occur during switching
Shove or arc phenomenon technical problem, the utility model provides a kind of intelligent capacitor compensation device.
A kind of intelligent capacitor compensation device of the utility model, including intelligent measurement and control unit, capacitor fling-cut switch, controller with
And compensating electric capacity, the intelligent measurement and control unit be mainly used in gather network system electrical parameter and thus calculate the network system fortune
Power factor during row, the capacitor fling-cut switch is used to detect network system input voltage and input current crossover point signal and realization
The switching operation of compensating electric capacity.The invention, which is mainly in the power factor intelligent control power network system according to network system, mends
Repay the switching quantity of electric capacity, when intelligent measurement and control unit detect network system power factor it is too low when, input compensation electric capacity, therefore
Even if network system is fluctuated, the invention can also make adjustment according to the current running situation of network system；Furthermore this
Capacitor fling-cut switch described in innovation and creation is able to detect that the zero cross signal of network system input voltage and input current, can make benefit
Repay electric capacity voltage x current zero cross signal carry out switching operation, it is to avoid occur as traditional Electric capacity compensation device electric arc and
Inrush current phenomenon, improves the service life of device.
Reference picture 3, intelligent measurement and control unit described in the invention is communicated to connect with controller, the controller output end
It is connected with capacitor fling-cut switch, the intelligent measurement and control unit, capacitor fling-cut switch and compensating electric capacity are fixed on one absolutely
In edge case 1, the structure of the separate type of traditional capacitance compensation device is changed, maintenance is easily installed, the top of insulated case 1 is set
There are multiple heat emission holes 2, facilitate compensating for the radiating of electric capacity, improve the service life of compensating electric capacity, the top of insulated case 1 is set simultaneously
There is air-break 3, the connection of the present apparatus and network system can be cut off rapidly when an accident occurs, damaged to prevent device.
Reference picture 2, specifically, capacitor fling-cut switch described in the invention include detection circuit and realize compensation electricity
Hold the magnetic latching relay of switching operation, the detection circuit includes voltage transformer pt, Current Transmit and protecting against shock
Electric capacity C, the voltage transformer pt input, Current Transmit input and protecting against shock electric capacity C are serially connected, the electricity
Pressure transformer PT output end and the output end of Current Transmit are connected with controller input respectively, the magnetic holding after
Electrical equipment input is connected with controller output end, it is certainly said herein be connected do not refer to directly be connected, and can be by mould
The combinational circuits such as number change-over circuit, decompression current-limiting circuit and controller are indirectly connected to.The voltage transformer pt and Current Mutual Inductance
Device CT is respectively used to detect the voltage x current value of network system input, described when overvoltage input phenomenon occurs in network system
Protecting against shock electric capacity C can play a protective role, and this is the property that make use of capacitor both end voltage itself to be mutated；The magnetic
Guard relay is consistent with general relay operation principle, but magnetic latching relay is needed defeated in its switch state
Enter the pulse electrical signal that end adds one fixed width, and magnetic latching relay current capacity is stronger than general relay, volume again compared with
It is small, save space-consuming.
Compensating electric capacity operating passing zero function can be achieved in effect of the present apparatus by detecting circuit, to avoid the occurrence of electric arc or gush
Flow phenomenon.The Fig. 7 of reference picture 6, specifically when compensating electric capacity input operation, voltage transformer pt detection power network input voltage
Instantaneous value, at input voltage instantaneous value peak to magnetic latching relay input add the first pulse electrical signal, make
Magnetic latching relay output end is closed in input voltage zero crossing, completes compensating electric capacity input operation, it is to avoid inrush current phenomenon occur；
When compensating electric capacity excision operation, Current Transmit detects the instantaneous value of power network input current, then input current instantaneous value
The second pulse electrical signal is added to magnetic latching relay input at peak, makes magnetic latching relay output end in input electricity
Zero point disconnection is flowed through, compensating electric capacity excision operation is completed, it is to avoid phenomenon of arc discharge occur.First pulse electrical signal and the second arteries and veins
Rush electric signal amplitude identical, opposite polarity is that just, which signal is negative as which specific signal, depends on the circuit with periphery
The pulse width of structure, first pulse electrical signal and the second pulse telecommunications is more than 1/4 week of input voltage and input current
Phase.
It is further used as preferred embodiment, the intelligent measurement and control unit includes acquisition chip, the acquisition chip type
Number it is CS5460A.Specifically the acquisition chip of the model CS5460A is mainly used in gathering the electrical parameter of network system, main
To include the effective value that respectively mutually input of network system, the acquisition chip has measurement and computing function concurrently, in it
Portion is configured with analog-digital converter and arithmetic unit, therefore intelligent measurement and control unit described in the invention is without using controller etc.
Intelligent chip, effectively reduces cost, while simplifying design.
It is further used as preferred embodiment, the invention is configured with fail-safe mechanisms, the present apparatus includes guarantor
Protect unit, the protection location include temperature detecting module and open phase detection module, the temperature detecting module output end with
Controller input is connected, and the open phase detection module is connected with magnetic latching relay input；The temperature detecting module is used
In compensating electric capacity Current Temperatures of the collection to put into, when compensating electric capacity temperature is too high, controller control magnetic latching relay is cut
Except the compensating electric capacity, prevent compensating electric capacity from occurring explosion phenomenon because temperature is too high；The open phase detection module is used to detect electricity
Whether net system occurs powering off phase shortage situation, and when power-off phase shortage situation occurs in network system, directly control magnetic latching relay is cut
Except all compensation relays, existing Electric capacity compensation device lacks pile defection function, causes in the network system of its application i.e.
Make the switching that phase shortage situation also may proceed to compensate electric capacity occur, cause network system uncertain fluctuation occur, to electricity
Each electrical equipment brings various imponderable consequences in net system.
It is further used as preferred embodiment, the temperature detecting module includes model STLM75 temperature sensors,
Temperature signal can directly be output to controller input by the temperature sensor in the form of data signal, be easy to controller
Processing, I2C is passed through between the temperature sensor and controller（IC bus）Connection, reduces temperature sensor and control
The wiring number of device, while the temperature sensor detection resolution of the model is high, detection range is wide.
Reference picture 4, is further used as preferred embodiment, and the open phase detection module includes single phase poaer supply and samples electricity
Road, reference power supply, comparison circuit, discharge circuit and triggers circuit, the single phase poaer supply sample circuit input and single-phase electricity
Source interface is connected, and the single phase poaer supply sample circuit output end is connected with the input of comparison circuit, the signal input interface
Be connected with reference power supply input, the output end of the reference power supply respectively with single phase poaer supply sample circuit and comparison circuit phase
Even, the output end of the comparison circuit is connected with the input of triggers circuit and the input of discharge circuit respectively, the electricity
Hold fling-cut switch respectively with discharge circuit and triggers circuit to be connected.Wherein described signal input interface include Live line Zero line with
And feeder ear, the power supply terminal voltage is converted to the voltage for being suitably for each module for power supply of circuit by reference power supply.Specific works
Principle is as follows：Single phase poaer supply sample circuit is used to sample the electrical parameter of single phase poaer supply, as judging whether single phase poaer supply occurs
The foundation of failure, will sample obtained electrical parameter and is input to comparison circuit, be compared with default parameter afterwards, according to drawing
As a result, it is possible to when single phase poaer supply breaks down in time control triggers circuit and discharge circuit work, and cut off electric capacity throwing
The connection of circuit is cut, open phase detection modular structure described in the utility model is simple, without using digital control chip, cost
It is low, it is easy to promote and realize.
Reference picture 5, specifically described single phase poaer supply sample circuit include rectifier bridge U1 and the first optical coupler B1, it is described
Rectifier bridge U1 inputs are connected with single phase poaer supply interface, and it is steady that the rectifier bridge U1 output ends are parallel with electrochemical capacitor C3 and first
Pressure pipe ZD1, the rectifier bridge U1 output ends are connected with the first optical coupler B1 input, the output end of the first optical coupler B1
It is connected with comparison circuit input.The rectifier bridge U1 is used to alternating current being converted to direct current, and electrochemical capacitor C3 plays filtering
Effect, and the first voltage-stabiliser tube ZD1 can then play the clamped effect of voltage, when input voltage is too high, the first voltage-stabiliser tube ZD1 is anti-
To puncturing, two terminal potentials are limited to a fixed value, prevent subsequent conditioning circuit from damaging, the first optical coupler B1 primarily serve every
Discrete sampling is acted on, because the first optical coupler B1 input both end voltages are too high, is not suitable for the processing of subsequent conditioning circuit, therefore described
Single phase poaer supply sample circuit is isolated and changed to the electric signal of input using the first optical coupler B1, is easy at subsequent conditioning circuit
Reason.
Further, the reference power supply includes three terminal regulator U2, the three terminal regulator U2 inputs and earth terminal, defeated
Go out between end and earth terminal and respectively and be connected to electric capacity, the three terminal regulator U2 inputs are connected with signal input interface, described
Three sections of output end of voltage stabilizer are connected with single phase poaer supply sample circuit and comparison circuit respectively.Three-terminal voltage-stabilizing described in the invention
Device U2 models 78L05, the three terminal regulator U2 can be converted to input terminal voltage another stable magnitude of voltage and defeated
Go out, between three terminal regulator U2 inputs and earth terminal, between output end and earth terminal respectively and be connected to the first electric capacity C1 and
Second electric capacity C2, it is therefore intended that filter the high frequency electrical signal of input and output end.
Further, the comparison circuit includes comparator integrated chip U3 and NPN type triode Q1, and the comparator is integrated
Chip U3 has been internally integrated first comparator and the second comparator, and the output end of the first comparator is defeated with the second comparator
Go out the negative pole that end is connected respectively to the first diode D1 and the second diode D2, the first diode D1 and the second diode
D2 positive pole is connected and is connected by the second voltage-stabiliser tube ZD2 with triode Q1 base stage, and the colelctor electrode of the triode Q1 is with touching
The input of Power Generation Road is connected, and the output end of second comparator is also connected with the input of electricity-generating circuit.The comparison is electric
Road is the most key part in open phase detection module, primarily serve judge and control effect, comparison circuit is with single-phase electricity
The electric signal of source sampling circuit input is foundation, is compared with default parameter, and the result drawn is used to control discharge circuit
And the work of triggers circuit, and according to the connection of the structure control capacitor switching circuit compared whether.
Further, the comparison circuit also includes the first LED 1 and the second LED 2, institute
The negative pole for stating the first LED 1 is connected with the output end of first comparator, second LED 2 it is negative
Pole is connected with triode Q1 colelctor electrode.The invention open phase detection module is also configured with external prompt facility, utilizes institute
State the first LED 1 and the second LED 2 realizes prompt facility, in normal and failure the feelings of single phase poaer supply
Under condition, different light emitting diodes can be accordingly lighted whether normal to characterize single phase poaer supply.
Further, the model of the comparator integrated chip U3 is LM393.In the comparator integrated chip U3 of the model
Portion is integrated with two comparators, and integrated level is high, effectively simplifies circuit structure.
Further, the discharge circuit includes multiple second optical coupler B2, and the triggers circuit includes multiple 3rd optocouplers
Device B3, the output end of second comparator is connected with the second optical coupler of discharge circuit B2 input, the triode Q1's
Colelctor electrode is connected with the optical coupler B3 inputs of triggers circuit the 3rd, and the second optical coupler B2 and the 3rd optical coupler B3 equally rise
To buffer action.
Better embodiment of the present utility model is illustrated above, but the invention be not limited to it is described
Embodiment, those skilled in the art can also make a variety of equivalent changes on the premise of without prejudice to the utility model spirit
Type or replacement, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (5)
1. a kind of intelligent capacitor compensation device, it is characterised in that including：
Intelligent measurement and control unit：Electrical parameter for detecting network system, calculates network system power factor；
Capacitor fling-cut switch：Switching operation for performing compensating electric capacity；
Controller and compensating electric capacity；
The intelligent measurement and control unit is communicated to connect with controller, and the controller output end is connected with capacitor fling-cut switch, described
Intelligent measurement and control unit, capacitor fling-cut switch and compensating electric capacity are fixed in insulated case, and the capacitor fling-cut switch includes
Detect circuit and the magnetic latching relay for controlling compensating electric capacity switching, the detection circuit be serially connected in live wire and zero line it
Between, it is described detection circuit include voltage transformer, current transformer and protecting against shock electric capacity, the voltage transformer input,
Current transformer input and protecting against shock electric capacity are serially connected, the output end of the voltage transformer and current transformer
Output end is connected with controller input respectively, and the magnetic latching relay input is connected with controller output end.
2. a kind of intelligent capacitor compensation device according to claim 1, it is characterised in that：The intelligent measurement and control unit includes
Acquisition chip, the acquisition chip model is CS5460A.
3. a kind of intelligent capacitor compensation device according to claim 2, it is characterised in that：Also include protection location, institute
Stating protection location includes temperature detecting module and open phase detection module, and the temperature detecting module output end is inputted with controller
End is connected, and open phase detection module is connected with magnetic latching relay input.
4. a kind of intelligent capacitor compensation device according to claim 3, it is characterised in that：The temperature detecting module includes
Model STLM75 temperature sensors.
5. a kind of intelligent capacitor compensation device according to claim 3, it is characterised in that：The open phase detection module includes
Single phase poaer supply sample circuit, reference power supply, comparison circuit, discharge circuit and triggers circuit, the single phase poaer supply sample circuit
Input is connected with single phase poaer supply interface, and the single phase poaer supply sample circuit output end is connected with the input of comparison circuit, institute
Signal input interface is stated with reference power supply input to be connected, the output end of the reference power supply respectively with single phase poaer supply sample circuit
And comparison circuit is connected, the input of the output end of the comparison circuit respectively with the input and discharge circuit of triggers circuit
End is connected, and the capacitor fling-cut switch is connected with discharge circuit and triggers circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720281190.8U CN206575168U (en) | 2017-03-21 | 2017-03-21 | A kind of intelligent capacitor compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720281190.8U CN206575168U (en) | 2017-03-21 | 2017-03-21 | A kind of intelligent capacitor compensation device |
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| Publication Number | Publication Date |
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| CN206575168U true CN206575168U (en) | 2017-10-20 |
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| CN201720281190.8U Expired - Fee Related CN206575168U (en) | 2017-03-21 | 2017-03-21 | A kind of intelligent capacitor compensation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849125A (en) * | 2017-03-21 | 2017-06-13 | 佛山市施诺尔电气有限公司 | A kind of intelligent capacitor compensation device and capacitor switching method |
| CN110285890A (en) * | 2019-06-29 | 2019-09-27 | 南京亚克电子有限公司 | A kind of temperature-sensing system under complex electromagnetic environment |
-
2017
- 2017-03-21 CN CN201720281190.8U patent/CN206575168U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849125A (en) * | 2017-03-21 | 2017-06-13 | 佛山市施诺尔电气有限公司 | A kind of intelligent capacitor compensation device and capacitor switching method |
| CN106849125B (en) * | 2017-03-21 | 2024-05-14 | 广东汇之华电气有限公司 | Intelligent capacitance compensation device and capacitance switching method |
| CN110285890A (en) * | 2019-06-29 | 2019-09-27 | 南京亚克电子有限公司 | A kind of temperature-sensing system under complex electromagnetic environment |
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