CN206517059U - A kind of new active filter system with mid-point voltage automatic detection - Google Patents
A kind of new active filter system with mid-point voltage automatic detection Download PDFInfo
- Publication number
- CN206517059U CN206517059U CN201720214811.0U CN201720214811U CN206517059U CN 206517059 U CN206517059 U CN 206517059U CN 201720214811 U CN201720214811 U CN 201720214811U CN 206517059 U CN206517059 U CN 206517059U
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- Prior art keywords
- electric capacity
- mid
- active filter
- point voltage
- resistance
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The utility model discloses a kind of new active filter system with mid-point voltage automatic detection, including active filter main body, wireless communication module and display terminal；The active filter main body includes central control unit, stack bus bar, mid-point voltage sample circuit, positioning unit, man-machine display interface and alarm unit；The central control unit is connected with mid-point voltage sample circuit, positioning unit, man-machine display interface and alarm unit respectively；The mid-point voltage sample circuit is connected with stack bus bar, and the central control unit is sent to display terminal by wireless communication module.The utility model not only ensures harm of the active filter from capacitance overvoltage, improves the service life of active filter, and can be accurately positioned and warning reminding, and facility is provided to staff, while reducing the cost and workload of maintenance.
Description
Technical field
The utility model belongs to active filter technical field, is related to a kind of new with mid-point voltage automatic detection
Active filter system.
Background technology
Active filter (Active Power Filter, abbreviation APF) is a kind of for dynamic harmonic wave, compensation nothing
The novel electric power electric device of work(, the harmonic wave and the idle of change that it can all change to size and frequency is compensated.
The Capacity Ratio of active filter DC side Support Capacitor demand is larger, typically using electrochemical capacitor.Electrochemical capacitor
Voltage class is general than relatively low, it is difficult to meet the demand of DC voltage grade.General way is connected again using first parallel connection
Mode, increase voltage class, the DC voltage that electrochemical capacitor can be born is in 450V, and the active filter of three-phase three-wire system is straight
Busbar voltage is flowed more than DC700V, and the electrochemical capacitor of series connection reaches the effect pressed typically using equalizing resistance in parallel.Equal piezoelectricity
Aging can occur over time for resistance, once equalizing resistance fails, busbar DC voltage may be biased to the electrochemical capacitor of side
Overvoltage can occur for the two poles of the earth, electrolysis electrochemical capacitor, and electric capacity may be burnt out by having exceeded rated voltage, or even cause electric capacity to explode, electricity
The electrolyte of solution electric capacity is conductive, in the event of blast by the substantial amounts of electrolyte that will be splashed inside active filter, is caused
Machine internal short-circuit, meeting crisis public property, causes damage；Meanwhile, once the voltage in active filter exceedes active power filtering
During the voltage that device can be carried, staff accurately and in time can not be handled the active filter broken down in time,
So as to influence maintenance efficiency.
Therefore a kind of new active filter with mid-point voltage automatic detection, which need to be designed, can effectively protect active filter
Electric capacity overvoltage in ripple device, can send warning reminding, while can be accurately to active when active filter breaks down
Wave filter is positioned.
Utility model content
A kind of new active filter with mid-point voltage automatic detection that the utility model is provided, passes through mid-point voltage
Sample circuit is sampled to the mid-point voltage of stack bus bar, it is to avoid active filter is endangered by capacitance overvoltage；By fixed
Bit location is positioned to the position of active filter, and carrying out alarm to the magnitude of voltage more than setting range by alarm unit carries
Wake up, the service life for solving active filter is short, maintenance cost is high and the problem of can not being accurately positioned.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of new active filter system with mid-point voltage automatic detection, including it is active filter main body, wireless
Communication module and display terminal；
The active filter main body includes central control unit, stack bus bar, mid-point voltage sample circuit, positioning list
Member, man-machine display interface and alarm unit；
The central control unit is single with mid-point voltage sample circuit, positioning unit, man-machine display interface and alarm respectively
Member connection；The mid-point voltage sample circuit is connected with stack bus bar, and the central control unit is sent out by wireless communication module
Deliver to display terminal.
Further, the stack bus bar include first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4,
N-th resistance Rn, the (n+1)th resistance Rn+1, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the n-th electric capacity
Cn, the (n+1)th electric capacity Cn+1；
The negative electrode of the first electric capacity C1 is connected with the second electric capacity C2 anode, the negative electrode and the 4th of the 3rd electric capacity C3
Electric capacity C4 anode connection, the negative electrode of the n-th electric capacity Cn is connected with the (n+1)th electric capacity Cn+1 anode, the resistance respectively with
Corresponding electric capacity is in parallel, and the first electric capacity C1, the 3rd electric capacity C3 and the n-th electric capacity Cn anode connect and compose the anode of stack bus bar,
First electric capacity C1, the 3rd electric capacity C3 and the n-th electric capacity Cn negative electrode connect and compose the midpoint of stack bus bar, the second electric capacity C2, the 4th
Electric capacity C4 and the (n+1)th electric capacity Cn+1 negative electrode connect and compose the negative electrode of stack bus bar.
Further, in the stack bus bar the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4,
N-th electric capacity Cn and the (n+1)th electric capacity Cn+1 is electrolytic capacitor, the first resistor R1, second resistance R2,3rd resistor R3,
4th resistance R4, the n-th resistance Rn and the (n+1)th resistance Rn+1 are the equal resistance of resistance.
Further, the central control unit is dsp chip, the midpoint electricity gathered for alignment voltage sampling circuit
Pressure is handled.
Further, the man-machine display interface is TPC7062TX type touch LCD screens.
Further, the alarm unit is audible-visual annunciator, wherein the acoustic alarm is buzzer, the light alarm is
LED.
Further, the display terminal is smart mobile phone or computer, and for display location information, the display terminal leads to
Wireless communication module is crossed to be communicatively coupled with least one active filter.
The beneficial effects of the utility model：The utility model can be in stack bus bar by mid-point voltage sample circuit
Point voltage is sampled, it is to avoid active filter is endangered by busbar overvoltage；Can be to active power filtering by positioning unit
The position of device is accurately positioned, and warning reminding, the reality can be carried out to the magnitude of voltage more than setting range by alarm unit
With the new harm that can not only ensure active filter from overvoltage during work, making for active filter is improved
With the life-span, and can be accurately positioned and warning reminding, give staff to provide facility, at the same reduce maintenance cost and
Workload.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, make required for being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings
Other accompanying drawings.
Fig. 1 is a kind of new active filter schematic diagram with mid-point voltage automatic detection of the utility model；
Fig. 2 is total system schematic diagram of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The all other embodiment obtained, belongs to the scope of the utility model protection.
Refer to Fig. 1, shown in 2, a kind of new active filter system with mid-point voltage automatic detection, including it is active
Filter main body, wireless communication module and display terminal, active filter main body include central control unit, stack bus bar, in
Point voltage sampling circuit, positioning unit, man-machine display interface and alarm unit, central control unit are sampled with mid-point voltage respectively
Circuit, positioning unit, man-machine display interface and alarm unit connection, mid-point voltage sample circuit are connected with stack bus bar, concentrated
Control unit is sent to display terminal by wireless communication module.
Central control unit is dsp chip, and the mid-point voltage gathered for alignment voltage sampling circuit is handled.
Positioning unit is GPR location technologies, is positioned for the position to active filter.
Man-machine display interface is TPC7062TX type touch LCD screens, and real-time communication is carried out with central control unit, man-machine aobvious
Show interface be used for show detect mid-point voltage value.
Alarm unit is audible-visual annunciator, and wherein acoustic alarm is buzzer, and light alarm is LED.
Wireless communication module is at least one of 3G, 4G or WIFI communication, and the information of reception is sent to display terminal.
Display terminal is the smart mobile phone or computer of maintenance personal, the position for showing the active filter broken down
Information.
Mid-point voltage sample circuit is used to gather mid-point voltage value, stack bus bar include first resistor R1, second resistance R2,
3rd resistor R3, the 4th resistance R4, the n-th resistance Rn, the (n+1)th resistance Rn+1, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity
C3, the 4th electric capacity C4, the n-th electric capacity Cn, the (n+1)th electric capacity Cn+1；
First electric capacity C1 negative electrode is connected with the second electric capacity C2 anode, the 3rd electric capacity C3 negative electrode and the 4th electric capacity C4's
Anode is connected, and the n-th electric capacity Cn (n is odd number) negative electrode is connected with the (n+1)th electric capacity Cn+1 (n+1 is even number) anode, resistance point
Not in parallel with corresponding electric capacity, the first electric capacity C1, the 3rd electric capacity C3 and the n-th electric capacity Cn anode connect and compose the sun of stack bus bar
Pole, the first electric capacity C1, the 3rd electric capacity C3 and the n-th electric capacity Cn negative electrode connect and compose the midpoint of stack bus bar, the second electric capacity C2,
Four electric capacity C4 and the (n+1)th electric capacity Cn+1 negative electrode connect and compose the negative electrode of stack bus bar, and the wherein electric capacity in stack bus bar is
Electrolytic capacitor, resistance is equalizing resistance.
Wherein resistance is in parallel with corresponding electric capacity respectively, refers to that the first electric capacity C1 is in parallel with first resistor R1, the second electric capacity
C2 is in parallel with second resistance R2, and the 3rd electric capacity C3 is in parallel with 3rd resistor R3, and the 4th electric capacity C4 is in parallel with the 4th resistance R4, and n-th
Electric capacity Cn is in parallel with the n-th resistance Rn, and the (n+1)th electric capacity Cn+1 is in parallel with the (n+1)th resistance Rn+1.
Mid-point voltage sample circuit is connected with the anode, negative electrode and midpoint of stack bus bar respectively, mid-point voltage sample circuit
Magnitude of voltage for detecting midpoint, and the magnitude of voltage of detection is sent to central control unit, Centralized Controller is by the electricity of reception
Pressure value is sent to man-machine display interface, if the mid-point voltage of collection exceedes the mid-point voltage value set on man-machine display interface,
The acoustic alarm and light alarm that man-machine display interface is sent a signal in alarm unit, alarm unit are simultaneously emitted by warning reminding；
Positioning unit sends the positional information of the active filter of collection to central control unit during this, and central control unit leads to
Cross wireless communication module to send positional information to display terminal, display terminal shows the position of the active filter broken down
Put.
The utility model can be sampled by mid-point voltage sample circuit to the mid-point voltage of stack bus bar, it is to avoid be had
Source filter is endangered by busbar overvoltage；The position of active filter can be accurately positioned by positioning unit,
Warning reminding can be carried out to the magnitude of voltage more than setting range by alarm unit, the utility model can not only ensure active
Harm of the wave filter during work from overvoltage, improves the service life of active filter, and can carry out standard
It is determined that position and warning reminding, facility is provided to staff, while reducing the cost and workload of maintenance.
Above content is only to the utility model structure example and explanation, the technology people of affiliated the art
Member is made various modifications or supplement to described specific embodiment or substituted using similar mode, without departing from reality
With new structure or surmount scope defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (7)
1. a kind of new active filter system with mid-point voltage automatic detection, it is characterised in that：Including active filter
Main body, wireless communication module and display terminal；
The active filter main body includes central control unit, stack bus bar, mid-point voltage sample circuit, positioning unit, people
Machine display interface and alarm unit；
The central control unit connects with mid-point voltage sample circuit, positioning unit, man-machine display interface and alarm unit respectively
Connect；The mid-point voltage sample circuit is connected with stack bus bar, the central control unit by wireless communication module send to
Display terminal.
2. a kind of new active filter system with mid-point voltage automatic detection according to claim 1, its feature
It is：The stack bus bar includes first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the n-th resistance Rn, the
N+1 resistance Rn+1, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the n-th electric capacity Cn, the (n+1)th electric capacity Cn
+1；
The negative electrode of the first electric capacity C1 is connected with the second electric capacity C2 anode, the negative electrode and the 4th electric capacity of the 3rd electric capacity C3
C4 anode connection, the negative electrode of the n-th electric capacity Cn is connected with the (n+1)th electric capacity Cn+1 anode, the resistance respectively with it is corresponding
Electric capacity it is in parallel, the first electric capacity C1, the 3rd electric capacity C3 and the n-th electric capacity Cn anode connect and compose the anode of stack bus bar, first
Electric capacity C1, the 3rd electric capacity C3 and the n-th electric capacity Cn negative electrode connect and compose the midpoint of stack bus bar, the second electric capacity C2, the 4th electric capacity
C4 and the (n+1)th electric capacity Cn+1 negative electrode connect and compose the negative electrode of stack bus bar.
3. a kind of new active filter system with mid-point voltage automatic detection according to claim 2, its feature
It is：The first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the n-th electric capacity Cn in the stack bus bar and
(n+1)th electric capacity Cn+1 is electrolytic capacitor, the first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4,
N-th resistance Rn and the (n+1)th resistance Rn+1 are the equal resistance of resistance.
4. a kind of new active filter system with mid-point voltage automatic detection according to claim 1, its feature
It is：The central control unit is dsp chip, and the mid-point voltage gathered for alignment voltage sampling circuit is handled.
5. a kind of new active filter system with mid-point voltage automatic detection according to claim 1, its feature
It is：The man-machine display interface is TPC7062TX type touch LCD screens.
6. a kind of new active filter system with mid-point voltage automatic detection according to claim 1, its feature
It is：The alarm unit is audible-visual annunciator, wherein the acoustic alarm is buzzer, the light alarm is LED.
7. a kind of new active filter system with mid-point voltage automatic detection according to claim 1, its feature
It is：The display terminal is smart mobile phone or computer, and for display location information, the display terminal passes through radio communication mold
Block is communicatively coupled with least one active filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720214811.0U CN206517059U (en) | 2017-03-07 | 2017-03-07 | A kind of new active filter system with mid-point voltage automatic detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720214811.0U CN206517059U (en) | 2017-03-07 | 2017-03-07 | A kind of new active filter system with mid-point voltage automatic detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206517059U true CN206517059U (en) | 2017-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720214811.0U Expired - Fee Related CN206517059U (en) | 2017-03-07 | 2017-03-07 | A kind of new active filter system with mid-point voltage automatic detection |
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| Country | Link |
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| CN (1) | CN206517059U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426601A (en) * | 2019-08-22 | 2019-11-08 | 金华电力设计院有限公司 | A kind of Fault Locating Method of earth-free photovoltaic system |
-
2017
- 2017-03-07 CN CN201720214811.0U patent/CN206517059U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426601A (en) * | 2019-08-22 | 2019-11-08 | 金华电力设计院有限公司 | A kind of Fault Locating Method of earth-free photovoltaic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171120 Address after: 234000 Anhui city of Suzhou Province East Village ten High-tech Zone North Ling Qing Road Patentee after: Anhui Sewoll Electrical Technology Co., Ltd. Address before: 230000 B, 1210-2, Hefei, Anhui, 860 Patentee before: Hefei Saiwo Energy Technology Co Ltd |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170922 Termination date: 20210307 |