CN207732633U - A kind of power filter protection system based on 10kV distribution terminals - Google Patents
A kind of power filter protection system based on 10kV distribution terminals Download PDFInfo
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- CN207732633U CN207732633U CN201721802055.XU CN201721802055U CN207732633U CN 207732633 U CN207732633 U CN 207732633U CN 201721802055 U CN201721802055 U CN 201721802055U CN 207732633 U CN207732633 U CN 207732633U
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Abstract
The utility model discloses a kind of, and the power filter based on 10kV distribution terminals protects system, including alternating current input power supplying and load；It is characterized in that：Further include sequentially connected alternating current input protection circuit, AC DC isolated power supplies module, alternating current filter circuit, DC DC isolated power supplies modules and the direct current filter circuit for obtaining clean safe dc electricity between the alternating current input power supplying and load；The alternating current filter circuit and direct current filter circuit are also associated with the power quality safety guarantee module for collection analysis power quality, and the power quality safety guarantee module is connected with the data communication module for data interaction.The power filter protection system based on 10kV distribution terminals can effectively inhibit electric network noise, ensure power quality and safety, obtain clean direct current, can be widely used for the fields such as 10kV distribution terminals, computer room equipment, Switching Power Supply, TT＆C system.
Description
Technical field
The utility model is related to a kind of, and the power filter based on 10kV distribution terminals protects system, belongs to distribution terminal signal
The application field for the treatment of technology.
Background technology
With Electronic Design, computer and household electrical appliance emerge in multitude with it is widely available, electric network noise interference it is increasingly tight
It weighs and is formed a kind of public hazards, especially transient noise to interfere, the rate of climb is fast, the duration is short, voltage amplitude amplitude is high, random
Property is strong, is also easy to produce severe jamming to microcomputer and digital circuit, often makes one impossible to guard against.
In recent years with the deep construction of intelligent distribution network, the intelligent grid coverage rate in China is gradually promoted, in intelligence
Under the requirement of power grid construction, feed line automatization system is to work such as the acquisition of user power utilization information, the monitoring of load, ordered electrics
Also more and more deeply and important, the requirement also to feeder automation feeder system terminal is higher and higher, while power distribution network input
Alternating current generally cannot directly access load and be powered, and generally require alternating current being converted to direct current.Therefore, it is necessary to one kind
Electric network noise can effectively be inhibited, obtain the direct current of safety approval with improve electronic equipment anti-interference ability and system it is reliable
The power protection system of property.
Utility model content
To solve the above problems, the purpose of this utility model is to provide a kind of power filters based on 10kV distribution terminals
Protection system can effectively inhibit electric network noise, ensure power quality and safety, obtain clean direct current, can be widely used for
The fields such as 10kV distribution terminals, computer room equipment, Switching Power Supply, TT＆C system.
Technical solution used by the invention for solving the technical problem is：
A kind of power filter protection system based on 10kV distribution terminals, including alternating current input power supplying and load；It exchanges defeated
Enter power supply and load between further include for obtain the sequentially connected alternating current input protection circuit of clean safe dc electricity,
AC-DC isolated power supplies module, alternating current filter circuit, DC-DC isolated power supplies module and direct current filter circuit；Alternating current filters
Circuit and direct current filter circuit are also associated with the power quality safety guarantee module for collection analysis power quality, power supply matter
Amount safety guarantee module is connected with the data communication module for data interaction.
Further, alternating current input power supplying includes main power source and stand-by power supply, and alternating current input power supplying is protected with alternating current input
It include the input power switching circuit for being switched to stand-by power supply in mains power failure or bad quality between circuit；Input
Power supply switch circuit is connect with power quality safety guarantee module.Input power switching circuit and stand-by power supply ensure that power supply electricity
The safety on road.
Further, power quality safety guarantee module includes alternating current input power supplying quality acquisition analysis system and DC power supply
Quality acquisition analysis system, alternating current filter circuit are connect with alternating current input power supplying quality acquisition analysis system, direct current filtering
Circuit is connect with DC power supply quality acquisition analysis system；Alternating current input power supplying quality acquisition analysis system and DC power supply quality
Data interaction is carried out by data communication module between acquisition analysis system.Alternating current input power supplying quality acquisition analysis system and straight
Stream power quality acquisition analysis system can monitor the situation of change of power supply, recording power mass parameter and fault message in real time,
Fault location and maintenance are quickly carried out when something goes wrong convenient for power filter protection system.
Further, first is provided between alternating current filter circuit and alternating current input power supplying quality acquisition analysis system to be isolated
Device is provided with the second isolating device between direct current filter circuit and DC power supply quality acquisition analysis system.First isolation
Device and the second isolating device can effectively inhibit interference signal, ensure that alternating current input power supplying quality acquisition analysis system and straight
Flow the stability and reliability of power quality acquisition analysis system.
Further, the display for human-computer interaction is provided between power quality safety guarantee module and data communication module
Module.Display module can intuitively show power quality parameters and fault message, and conveniently to the triggering of power source internal
Parameter is configured.
Further, display module is OLED display screen with touch screen functionality and corresponding for reading power quality parameters
And it is output to display screen and the display circuit of the trigger parameter of power supply is set.Display circuit is used to support the human-computer interaction of display screen
Function.
Further, data communication module includes one or more in 4G modules, WiFi module and bluetooth module.It is a variety of logical
The collocation of news module increases the flexibility of power filter protection system.
Further, the isolation voltage between alternating current input power supplying and load is more than 10kV.Isolation voltage more than 10Kv increases
The safety of big power filter protection system and application range.
The utility model has the beneficial effects that：A kind of power filter based on 10kV distribution terminals that the utility model uses
Protection system inhibits the interference voltage in input AC electricity by alternating current input protection circuit, improves exchange input electricity
The power factor (PF) in source；Utilize AC-DC isolated power supplies module, alternating current filter circuit, DC-DC isolated power supplies module and direct current electrofiltration
The multistage isolated power supply module and filter circuit that wave circuit connects filter out the interference component in alternating current input power supplying, will exchange
Electricity is converted to the direct current for stablizing safety, increases the stability and reliability of power filter protection system；Power quality safety
Alternating current after assurance module collection analysis is filtered and user is fed back to by data communication module after the quality of direct current, had
Power source performance is optimized conducive to user.
Description of the drawings
The utility model is described in further detail with example below in conjunction with the accompanying drawings.
Fig. 1 is the system block diagram of the utility model；
Fig. 2 is the alternating current filter circuit figure of the utility model；
Fig. 3 is the utility model direct current filter circuit figure.
Specific implementation mode
A kind of power filter based on 10kV distribution terminals of-Fig. 3 referring to Fig.1, the utility model protect system, including hand over
Flow input power 1 and load 14；Further include between alternating current input power supplying 1 and load 14 for obtain clean safe dc electricity according to
Alternating current input protection circuit 3, AC-DC isolated power supplies module 4, alternating current filter circuit 5, the DC-DC isolated power supplies of secondary connection
Module 6 and direct current filter circuit 7；Alternating current filter circuit 5 and direct current filter circuit 7 are also associated with for collection analysis electricity
The power quality safety guarantee module of source quality, power quality safety guarantee module are connected with the data communication for data interaction
Module 13.
In the present embodiment, the problems such as in order to deal with power failure or power failure, alternating current input power supplying 1 includes power distribution network output
Main power source and quoted from the stand-by power supply relatively independent with main power source, between alternating current input power supplying 1 and alternating current input protection circuit 3
It is provided with input power switching circuit 2, which uses the AC220V relays of the model LY2N-J AC220/240 of Omron
Main switching component of the device as input power；Under normal circumstances, it is powered by main power source, it is defeated in mains power failure
Enter power supply switch circuit 2 alternating current input power supplying 1 be switched to stand-by power supply to be powered；Input power switching circuit 2 and power supply
Quality safety assurance module connects, to carry out the switching of input power in the bad situation of quality of power supply.It is defeated
Enter power supply switch circuit 2 and main power supply the common guarantee security reliability of power circuit.
Wherein, alternating current input protection circuit 3 is realized with two concatenated varistors, two concatenated Y capacitances in parallel and is handed over
The connection of stream input power 1 and the earth discharges the crosstalk voltage of excess, in order to improve the power factor of alternating current input power supplying 1,
Increase to the buffering of fast-changing high frequency voltage, electric current, connects respectively a 10uH/2A in the input terminal in the circuits L and the circuits N
Differential mode inductance；In the present embodiment, varistor uses the 20D182 varistors of Wu Erte companies, isolation voltage to reach
To 1800VAC.
Wherein, alternating current input is converted to direct current electricity output and inputted mutual with output by AC-DC isolated power supplies module 4
Isolation, DC-DC isolated power supplies module 6 play the role of eliminating common mode interference, surge impact and realize security isolation；The present embodiment
In, AC-DC isolated power supplies module 4 uses the AC-DC power supply moulds of the MBP300-2A27D27220 models of Jin Shengyang companies
Block, isolation voltage reach 2500VAC；DC-DC isolated power supplies module 6 uses the URE4805LP- of Jin Shengyang companies
The DC-DC power module of 10WR3 models, isolation voltage reach 3000VDC.
Wherein, alternating current filter circuit 5 as shown in Fig. 2, include common mode inductance L1 and common mode inductance L2, common mode inductance L1's
Two input terminals are the input terminal of alternating current filter circuit 5, two inputs of the two output ends connection common mode inductance L2 of common mode inductance L1
End, two output ends of common mode inductance L2 are the output end of alternating current filter circuit 5, in parallel between two input terminals of common mode inductance L1
There are capacitance C1, capacitance C2, two output ends of common mode inductance L1 to be parallel with capacitance C3, one end of capacitance C3 is connected to differential mode inductance L3
Input terminal, the other end of capacitance C3 is connected to the input terminal of differential mode inductance L4, the output end and differential mode inductance of differential mode inductance L3
The capacitance C4 connected in a series arrangement and capacitance C5, capacitance C4 and the concatenated connecting pins capacitance C5 are parallel between the output end of L4
It is grounded；Capacitance C4 and capacitance C5 is whole in parallel with two input terminals of common mode inductance L2, and two output ends of common mode inductance L2 are in parallel
There are capacitance C6 and capacitance C7.In the alternating current filter circuit 5, common mode inductance and differential mode inductance filter out height with the use of having reached
The garbage signals such as frequency interference signal and spike, wherein the common mode inductance used is low-loss, the ferrite of high permeability electricity
Sense.
Wherein, direct current filter circuit 7 as shown in figure 3, include common mode inductance L5 and common mode inductance L6, common mode inductance L5's
Two input terminals are the input terminal of direct current filter circuit 7, two inputs of the two output ends connection common mode inductance L6 of common mode inductance L5
End, two output ends of common mode inductance L6 are the output end of direct current filter circuit 7, in parallel between two input terminals of common mode inductance L5
There are capacitance C8 and capacitance C9, two output ends of common mode inductance L5 to be parallel with capacitance C10, one end and the differential mode inductance L7 of capacitance C10
Input terminal connected with one end of capacitance C18, the other end of capacitance C18 is connect with one end of resistance R1, the other end of resistance R1
It is connected to the output end of differential mode inductance L7, the other end of capacitance C10 connects with one end of the input terminal of differential mode inductance L8 and capacitance C19
It connecing, the other end of capacitance C19 is connect with one end of resistance R2, and the other end of resistance R2 is connected to the output end of differential mode inductance L8,
It is parallel with capacitance C11, capacitance C12 and capacitance C13, capacitance between the output end and the output end of differential mode inductance L8 of differential mode inductance L7
C13 is in parallel with two input terminals of common mode inductance L6, and the output end of common mode inductance L6 is parallel with capacitance C14, capacitance C15, capacitance C16
With capacitance C17；One end of capacitance C8 is connect with one end of capacitance C20, and the other end of capacitance C20 is connect with one end of capacitance C17,
The other end of capacitance C8 is connect with one end of capacitance C21, and the other end of capacitance C21 is connect with the other end of capacitance C17.The direct current
The electromagnetic interferences such as electrostatic, surge, burst of pulses are imitated in the two-stage combined type filtering that electrofiltration wave circuit 7 uses with good filtering
Fruit, wherein common mode inductance L5 and its peripheral circuit mainly filter out primary High-frequency Interference, spike, reinforce direct current
The anti-interference ability in source；On the one hand common mode inductance L6 and its peripheral circuit filter out the interference that input circuit transmits, another
Aspect also filters out the reflection interference of load 14, to make load 14 obtain the direct current of clean safety.
Specifically, power quality safety guarantee module includes the alternating current input power supplying matter being connect with alternating current filter circuit 5
Amount acquisition analysis system 10 and the DC power supply quality acquisition analysis system 11 being connect with direct current filter circuit 7；Exchange input
It is carried out by data communication module 13 between power quality acquisition analysis system 10 and DC power supply quality acquisition analysis system 11
Data interaction.Alternating current input power supplying quality acquisition analysis system 10 and DC power supply quality acquisition analysis system 11 can supervise in real time
The situation of change of power supply, recording power mass parameter and fault message are surveyed, it is fast when something goes wrong convenient for power filter protection system
Speed carries out fault location and maintenance.What the isolated amplifier in alternating current input power supplying quality acquisition analysis system 10 therein used
It is the AMC1200 isolated amplifiers of TI companies, the isolation voltage of the isolated amplifier is up to 4000Vpeak, operating temperature range
From -40 degrees Celsius to 125 degree Celsius, there is higher safety and using flexible.
Wherein, be provided between alternating current filter circuit 5 and alternating current input power supplying quality acquisition analysis system 10 first every
From device 8, the second isolating device 9 is provided between direct current filter circuit 7 and DC power supply quality acquisition analysis system 11.The
One isolating device 8 and the second isolating device 9 can effectively inhibit interference signal, ensure that alternating current input power supplying quality collection analysis
The stability and reliability of system 10 and DC power supply quality acquisition analysis system 11.
In order to intuitively check that power filter protects the parameters of system, in the present embodiment, power quality safety guarantee mould
The display module 12 for human-computer interaction is provided between block and data communication module 13.Display module 12 can be by power quality
Parameter and fault message are intuitively shown, and are conveniently configured to the trigger parameter of power source internal.
Wherein, display module 12 is OLED display screen with touch screen functionality and corresponding for reading power quality parameters
And it is output to display screen and the display circuit of the trigger parameter of power supply is set.Display circuit is used to support the human-computer interaction of display screen
Function.
Wherein, data communication module 13 includes one or more in 4G modules, WiFi module and bluetooth module.This implementation
In example, in order to ensure distinct device, the reliability that data communicate between distinct interface is used in distance between closer equipment
Wireless or bluetooth mode carries out data interaction between any two, and telecommunication is then communicated by the way of 4G.In order to
The inquiry velocity for increasing fault data adds fault inquiry mechanism in 4G modules, when some equipment in the event of failure, can give birth to automatically
Maintenance personnel is fed back to handle different faults situation at corresponding message format, improves the reliable of data transmission
Property.Wherein, for 4G modules using the ME909s-821LGA communication modules of Huawei Company, communication protocol is the FDD- of standard
LTE, and when externally sending key message, can be encrypted using SM2 algorithms in inside, the distribution in a substation is whole
End data, which exchanges, uses plaintext IEC 101 or plaintext IEC104 stipulations, using by SM2 algorithm for encryption between different substation
The information crossed carries out data exchange.The collocation of a variety of communication modules increases the flexibility of power filter protection system.
Wherein, the isolation voltage between alternating current input power supplying 1 and load 14 is more than 10kV.Isolation voltage more than 10Kv increases
The safety of big power filter protection system and application range.
The above, the only preferred embodiment of the utility model, the utility model are not limited to above-mentioned implementation
Mode should all belong to the scope of protection of the utility model as long as it reaches the technique effect of the utility model with identical means.
Claims (8)
1. a kind of power filter based on 10kV distribution terminals protects system, including alternating current input power supplying (1) and load (14),
It is characterized in that：Further include for obtaining clean safe dc electricity successively between the alternating current input power supplying (1) and load (14)
The alternating current input protection circuit (3) of connection, AC-DC isolated power supplies module (4), alternating current filter circuit (5), DC-DC isolation
Power module (6) and direct current filter circuit (7)；The alternating current filter circuit (5) and direct current filter circuit (7) are also connected with
It is useful for the power quality safety guarantee module of collection analysis power quality, the power quality safety guarantee module connection is useful
In the data communication module (13) of data interaction.
2. the power filter according to claim 1 based on 10kV distribution terminals protects system, it is characterised in that：The friendship
Stream input power (1) includes main power source and stand-by power supply, the alternating current input power supplying (1) and alternating current input protection circuit (3)
Between include input power switching circuit (2) for being switched to stand-by power supply in mains power failure or bad quality；It is described
Input power switching circuit (2) is connect with power quality safety guarantee module.
3. the power filter according to claim 1 based on 10kV distribution terminals protects system, it is characterised in that：The electricity
Source quality safety assurance module includes alternating current input power supplying quality acquisition analysis system (10) and DC power supply quality collection analysis
System (11), the alternating current filter circuit (5) connect with alternating current input power supplying quality acquisition analysis system (10), the direct current
Electrofiltration wave circuit (7) is connect with DC power supply quality acquisition analysis system (11)；The alternating current input power supplying quality collection analysis
Data interaction is carried out by data communication module (13) between system (10) and DC power supply quality acquisition analysis system (11).
4. the power filter according to claim 3 based on 10kV distribution terminals protects system, it is characterised in that：The friendship
The first isolating device (8), institute are provided between galvanic electricity filter circuit (5) and alternating current input power supplying quality acquisition analysis system (10)
It states and is provided with the second isolating device (9) between direct current filter circuit (7) and DC power supply quality acquisition analysis system (11).
5. the power filter according to claim 1 based on 10kV distribution terminals protects system, it is characterised in that：The electricity
The display module (12) for human-computer interaction is provided between source quality safety assurance module and data communication module (13).
6. the power filter according to claim 5 based on 10kV distribution terminals protects system, it is characterised in that：It is described aobvious
Show that module (12) is OLED display screen with touch screen functionality and corresponding for reading power quality parameters and being output to display
The display circuit of the trigger parameter of screen and setting power supply.
7. the power filter according to claim 1 based on 10kV distribution terminals protects system, it is characterised in that：The number
Include one or more in 4G modules, WiFi module and bluetooth module according to communication module (13).
8. the power filter according to claim 1 based on 10kV distribution terminals protects system, it is characterised in that：The friendship
The isolation voltage flowed between input power (1) and load (14) is more than 10kV.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721802055.XU CN207732633U (en) | 2017-12-19 | 2017-12-19 | A kind of power filter protection system based on 10kV distribution terminals |
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| CN201721802055.XU CN207732633U (en) | 2017-12-19 | 2017-12-19 | A kind of power filter protection system based on 10kV distribution terminals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108063543A (en) * | 2017-12-19 | 2018-05-22 | 珠海许继电气有限公司 | A kind of power filter protection system based on 10kV distribution terminals |
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2017
- 2017-12-19 CN CN201721802055.XU patent/CN207732633U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108063543A (en) * | 2017-12-19 | 2018-05-22 | 珠海许继电气有限公司 | A kind of power filter protection system based on 10kV distribution terminals |
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