CN207368887U - Low pressure bi-directional electric power electronic pressure controller - Google Patents
Low pressure bi-directional electric power electronic pressure controller Download PDFInfo
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- CN207368887U CN207368887U CN201720590800.2U CN201720590800U CN207368887U CN 207368887 U CN207368887 U CN 207368887U CN 201720590800 U CN201720590800 U CN 201720590800U CN 207368887 U CN207368887 U CN 207368887U
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Abstract
The utility model discloses a kind of low pressure bi-directional electric power electronic pressure controller, it includes 1 group of by-pass switch K1,2 isolation control transformer TR1, TR2 and Regulation Control module.Wherein by-pass switch K1 includes several normally opened and normally-closed contacts, and voltage regulating module accesses its normally opened contact circuit and by-pass line accesses normally closed circuit.Isolation control transformer TR1 and TR2 are step-down transformer, and the no-load voltage ratio of the two is 3:1.If the output voltage of TR2 is its nominal input voltage UNA%, then under the control of Regulation Control module, the output voltage of system can be in (1 ± 4*A%) UNIn the range of adjust.The utility model has the advantages that high reliability, small, easy to operate, handoff procedure non-impact current, is disturbed without high-frequency electromagnetic.
Description
Technical field
The utility model belongs to intelligent electric equipment technical field, more particularly to a kind of for AC low voltage power switch board net
Low pressure bi-directional electric power electronic pressure controller.
Background technology
Voltage is an important mark for weighing power quality, on the one hand quality of voltage influences the power supply of electric system
Quality, while the problems such as also influence safe operation of power system.Therefore, have in GB/T12325-2008 to supply voltage deviation
Clearly regulation.Such as to 220V single phase power supplies voltage deviation be nominal voltage+7%, -10%.
As town and country power load is continuously increased, cause electric load notch getting worse, power quality problem is increasingly prominent
Go out.The particularly area such as remote countryside, transmission of electricity thread is remote, and alternating current is big by long-distance transport loss, and the power quality of user is frequent
Requirement is not reached.Especially peak times of power consumption, voltage fluctuation is bigger, and power supply trouble happens occasionally, the production and living to resident
Bring inconvenience.On the other hand, with the popularization of distributed power generation, such as：Wind-powered electricity generation, photoelectricity, the access power grid of small power station, due to it
The fluctuation of generated energy, the fluctuation of power load, can cause the fluctuation along line voltage, and the influence that it is fluctuated to network voltage is much high
In the requirement of national standard.Therefore, how to suppress interference of the voltage fluctuation to power consumer, improve the dynamic electric energy of distribution system
Quality, it has also become pendulum very urgent problems in face of electric power researcher.
At present, the common adjusting method of network voltage mainly has two kinds：
First, by adjusting main transformer of transformer substation load tap changer pressure regulation, the foundation of adjusting can only be with substation bus bar
On the basis of voltage, it is impossible to ensure the voltage stabilization of each bar circuit, and frequently safe operation shadow of the adjustment main transformer tap to main transformer
Sound is bigger；
Another method is the regulative mode using grouping switching capacitor group, but its reactive-load compensation is discontinuous, is had
Level, it is impossible to obtain preferable compensation effect.In peak times of power consumption, the capacitor group for having level does not often reach compensation capacity；And
When low power consumption, or even occur sending idle phenomenon repeatedly.Shoving caused by switch on-off capacitance and overvoltage
It is all extremely harmful in itself to system and equipment, and since electric network reactive-load change is fast, the frequent switching of capacitor so that capacitor life-span
Shorten, capacitor often damages, serious to reduce power grid power quality and power supply reliability.
In Chinese utility model patent ZL200820039992 and ZL201420043956, employ and utilize electric power electricity
The method of sub switch control multi-tap transformer tapping switching realizes the bidirectional modulation of voltage, but this two kinds of schemes are used to middle height
Crimping road bus bar side, to the pressure-resistant more demanding of power electronic devices, and more tap is brought not to the reliability of transformer
The influence of profit.
In application for a patent for invention 201410620023, returned by the busbar that the compensator transformer that boosts is sealed in high-tension transformer
Road simultaneously can realize that voltage Bidirectional stepless is adjusted using IGBT adjustings offset voltage, but it is only monitored input terminal voltage and adjusts
Section, can not monitor and compensate the change of output end voltage.And control is more complicated using PWM, there are high-frequency electromagnetic interference.
Utility model content
Based on a kind of low pressure bi-directional electric power electronic pressure controller described in background technology, is badly in need of at present, it may be mounted at distribution
The endpoint node of circuit, realizes bi-directional voltage regulatory function automatically, and reliability is high, cost is low, small, easy to operate.
In order to solve the above-mentioned technical problem, the utility model embodiment provides a kind of low pressure bi-directional electric power electronic pressure regulating
Device, it includes by-pass switch K1, isolation control transformer group TR1, TR2 and Regulation Control module.Wherein：
The by-pass switch K1 includes several normally-closed contacts and normally opened contact.Voltage regulating module accesses its normally opened contact circuit
And by-pass line accesses its normally-closed contact circuit；
Described isolation control transformer TR1, TR2 are step-down transformer, and the no-load voltage ratio of the two is 3:1.If the output of TR2
Voltage is its nominal input voltage UNA%, then by accessing and/or disconnecting different transformers, device can export 9 kinds not
With voltage, the voltage regulation limits of system for ±（4*A）%.
The Regulation Control module, can be with the input voltage of real-time monitoring system, and according to input voltage and rated voltage
Difference, automatic adjustment isolation control transformer group output offset voltage so that the output voltage of system allows in national standard
In fluctuation range.
The Regulation Control module, can be with the output current of real-time monitoring system, if output current exceedes what system allowed
Threshold value, then can switch to by-path running status by system automatically, to protect the power device of regulator and ensure power grid not
Power-off operation.
The control module has RS485/RS232 communication interfaces, can be connect by serial ports or the network interface of extension
Receive and perform long-range control command.
Preferably, the by-pass switch K1 uses small-sized alternating current contactor CJX2-9508, has 2 normally opened contacts and 2
Normally-closed contact, rated current 95A.
Preferably, it is described to isolate that to control the input voltage of transformer TR1 be 240V, output voltage 27V, rated capacity
2000VA；It is 240V, output voltage 9V, rated capacity 650VA that the isolation, which controls the input voltage of transformer TR2,.Whole dress
The voltage regulation limits put are ± 15%, penetration 15kW.
Preferably, the Regulation Control module includes ARM core systems, by-pass switch control module, input voltage collection
Module, output voltage acquisition module, output current acquisition module, trigger pulse and drive module, absorption protection module, synchronous control
The modules such as molding block, RS485/RS232 modules.
Preferably, the ARM core systems use STM32F207.
Preferably, the model TVA1421-01 of the voltage sensor.
Preferably, the model TV500-1 of the current sensor.
Preferably, the model DZ47-60 C32 of the overcurrent protector F1.
Preferably, the model DZ47Y-40 of the Surge Protector SP1.
Preferably, the model MTC110-16 of the bidirectional thyristor group 1 ~ 8.
Preferably, the model MTC160-16 of described bidirectional thyristor S1, S2.
Implement the utility model, there is following beneficial effect：
Using the low pressure bi-directional electric power electronic pressure controller of the present embodiment, can not have a power failure automatic adjustment output voltage, and electricity
Pressure can meet boosting demand during power grid peak of power consumption with bidirectional modulation, decompression demand when also can meet gently to load, and protect
Voltage is demonstrate,proved in qualified scope；
Secondly, transformer group is controlled by matching different isolation, the present apparatus can export different voltage regulation limits.
As in this preference, selected the transformer that no-load voltage ratio is 3.75% and 11.25%, the voltage regulation limits of system are ± 15%.Equally,
If selecting the transformer of suitable no-load voltage ratio, the voltage regulation limits of system are chosen as ± 6%, ± 10% or ± 20%.
Again, on the endpoint node of the power distribution network of this low pressure bi-directional electric power electronic pressure controller installation, operating voltage is relatively low, right
The electric current of power electronic device and pressure-resistant requirement are relatively low, therefore the investment of equipment is small, quick, easy for installation, not into
On the premise of row large scale electric network is transformed, Voltage-stabilizing Problems caused by various factors can be effectively solved；
Again, the output for low pressure bi-directional electric power electronic pressure controller being connected on due to the secondary coil of isolation control transformer is returned
Lu Zhong, will not produce voltage swells or rapid drawdown during pressure regulation, not produce harmonic wave, and can suppress flickering, and delivery efficiency is high；
In addition, relatively electromagnetic type self coupling same at present becomes pressure regulator, under same voltage and penetration, control becomes
The capacity of depressor is only its about 1/10th, greatly reduces the loss of regulator, has the power supply quality that increases significantly
With the function of energy-saving consumption-reducing.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
Put, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the fundamental diagram of the utility model;
Fig. 2 is a kind of structural representation of one embodiment of low pressure bi-directional electric power electronic pressure controller provided by the utility model
Figure.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without creative efforts
All other embodiments obtained, shall fall within the protection scope of the present invention.
As shown in Fig. 2, give an a kind of implementation of low pressure bi-directional electric power electronic pressure controller provided by the utility model
Example.In this embodiment, the utility model low pressure bi-directional electric power electronic pressure controller includes by-pass switch K1, isolation control transformer
Group TR1, TR2 and Regulation Control module.
The by-pass switch K1 includes several normally opened and normally-closed contacts.Wherein, by-pass line is connected to K1 normally-closed contacts
The circuit at place, circuit also can normally export electricity when system default is in bypass condition to ensure that regulator does not put into operation
Pressure.Voltage regulating module is connected to the circuit where K1 normally opened contacts.System can be put into operation state manually by switching button, this
When bypass loop disconnect.And when system overcurrent or excess temperature, control system automatically can also switch this voltage regulating device
To bypass condition to protect regulator.
Isolation control transformer group TR1 and TR2 are step-down transformer, and the no-load voltage ratio of the two is 3:1.That is, if TR2's is defeated
Go out the A% that voltage is input voltage, then the output voltage of TR1 is the 3*A% of input voltage.By accessing and/or disconnecting the two
The primary side winding of transformer, can adjust out 9 different output voltages, adjustable extent for ±（4*A）%.
Regulation Control module includes input voltage measurement VD1, output voltage detection VD2, output electric current measure CD1, overcurrent
Protector F1, Surge Protector SP1, bidirectional thyristor group 1 ~ 8, bidirectional thyristor S1, S2 and drive control circuit composition.
Specifically, in the present embodiment, the by-pass switch K1 is using positive safe small-sized alternating current contactor, model
CJX2-9508.The A.C. contactor has 2 normally opened contacts and 2 normally-closed contacts, rated operational current 95A.
Specifically, it is described to isolate that to control the input voltage of transformer TR1 be 240V, output voltage 27V, capacity
2000VA.It is 240V, output voltage 9V, capacity 650VA that isolation, which controls the input voltage of transformer TR2,.Thus, it is possible to calculate
The output voltage adjustable range for going out the present embodiment mesolow bi-directional electric power electronic pressure controller is the 85% ~ 115% of input voltage.Pass through
The isolation control transformer group of different decompression no-load voltage ratios is selected, can also realize the specific implementation of the present apparatus of other range of regulation
Example, such as ± 6%, ± 10%.
Specifically, the model TVA1421-01 of input voltage measurement VD1 and output voltage the detection VD2, is a kind of
Current mode voltage transformer.Its input voltage≤1000Vac, output voltage≤1.2V, rated current 6mA/6mA, nonlinearity
≤0.2%。
Specifically, the model TV500-1 of the output electric current measure CD1.Its specified input current 200A, rated output
Electric current 200mA, specified sampling resistor 75, specified sampled voltage 15V, nonlinearity≤1%.
Specifically, the model DZ47-60 C32 of the overcurrent protector F1, its rated voltage 400Vac, rated current
32A。
Specifically, the model DZ47Y-40 of the Surge Protector SP1, its discharge current 40kA, voltage protection level
1.8kV, protection class two level.
Specifically, the model MTC110-16 of the bidirectional thyristor group 1 ~ 8, rated current 110A, rated voltage
1600V。
Specifically, the model MTC160-16 of described bidirectional thyristor S1, S2, rated current 160A, rated voltage
1600V。
In the embodiment of fig. 2, the drive control circuit is the control core of this low pressure bi-directional electric power electronic pressure controller.
The circuit includes ARM core systems, by-pass switch control module, input voltage acquisition module, output voltage acquisition module, output
Current acquisition module, trigger pulse and drive module, absorb the moulds such as protection module, synchronization control module, RS485/RS232 modules
Block.ARM core systems are by the input voltage of input voltage acquisition module sampling system, according to input voltage and rated voltage
Difference, determines the on off state of thyristor groups 1 ~ 8 and thyristor S1, S2, and is exported correctly by trigger pulse and drive module
Driving pulse, drive turn on thyristors and/or shut-off, suitable offset voltage produced, to ensure the voltage of output terminal in state
As defined in family's standard within fluctuation range.Meanwhile system is also real by output voltage acquisition module and output current acquisition module
When monitoring system output voltage and output current situation, system is switched to bypass operation shape by situations such as running into overcurrent automatically
State, with the power device in protective device.
ARM core systems can also be communicated by RS485/RS232 modules and host computer or tele-control system,
Receive and perform host computer or remote control command.
Implement the utility model, there is following beneficial effect：
Using the low pressure bi-directional electric power electronic pressure controller of the present embodiment, can not have a power failure automatic adjustment output voltage, and electricity
Pressure can meet boosting demand during power grid peak of power consumption with bidirectional modulation, decompression demand when also can meet gently to load, and protect
Voltage is demonstrate,proved in qualified scope；
Secondly, on the endpoint node of the power distribution network of this low pressure bi-directional electric power electronic pressure controller installation, operating voltage is relatively low, right
The electric current of power electronic device and pressure-resistant requirement are relatively low, therefore the investment of equipment is small, quick, easy for installation, not into
On the premise of row large scale electric network is transformed, Voltage-stabilizing Problems caused by various factors can be effectively solved；
Again, the output for low pressure bi-directional electric power electronic pressure controller being connected on due to the secondary coil of isolation control transformer is returned
Lu Zhong, will not produce voltage swells or rapid drawdown during pressure regulation, not produce harmonic wave, and can suppress flickering, and delivery efficiency is high；
In addition, relatively electromagnetic type self coupling same at present becomes pressure regulator, under same voltage and penetration, control becomes
The capacity of depressor is only its about 1/10th, greatly reduces the loss of regulator, has the power supply quality that increases significantly
With the function of energy-saving consumption-reducing.
It is safe and reliable to operation in addition, device has the function of multiple protective and bypass power supply, can long continuous operation, it is ensured that
System does not power off operation.
Claims (4)
1. a kind of low pressure bi-directional electric power electronic pressure controller, it is characterised in that including by-pass switch K1, by-pass line, isolation control
Transformer group TR1, TR2 and Regulation Control module；
The by-pass switch K1 includes N number of normally-closed contact and normally opened contact, N >=2；Regulation Control module access by-pass switch K1's
Normally opened contact circuit, the normally-closed contact circuit of by-pass line access by-pass switch K1；
Isolation control transformer group TR1, TR2 is step-down transformer, and the no-load voltage ratio of the two is 3:1；If the output electricity of TR2
Press as its nominal input voltage UNA%, then by accessing and/or disconnecting different transformers, 9 kinds of different electricity can be exported
Pressure, the voltage regulation limits of system for ±（4*A）%；
The Regulation Control module has RS485/RS232 communication interfaces, can be connect by serial ports or the network interface of extension
Receive and perform long-range control command.
2. low pressure bi-directional electric power electronic pressure controller according to claim 1, it is characterised in that the Regulation Control module bag
Include ARM core systems, by-pass switch control module, input voltage acquisition module, output voltage acquisition module, output current collection
Module, trigger pulse and drive module, absorb protection module, synchronization control module, RS485/RS232 modules.
3. low pressure bi-directional electric power electronic pressure controller according to claim 1, it is characterised in that the by-pass switch K1 is used
Small-sized alternating current contactor CJX2-9508, has 2 normally opened contacts and 2 normally-closed contacts, rated current 95A.
4. low pressure bi-directional electric power electronic pressure controller according to claim 1, it is characterised in that the isolation control transformer
The input voltage of TR1 is 240V, output voltage 27V, rated capacity 2000VA；The input electricity of the isolation control transformer TR2
Press as 240V, output voltage 9V, rated capacity 650VA；The voltage regulation limits of whole device are ± 15%, and penetration is
15kW。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720590800.2U CN207368887U (en) | 2017-05-25 | 2017-05-25 | Low pressure bi-directional electric power electronic pressure controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720590800.2U CN207368887U (en) | 2017-05-25 | 2017-05-25 | Low pressure bi-directional electric power electronic pressure controller |
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| Publication Number | Publication Date |
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| CN207368887U true CN207368887U (en) | 2018-05-15 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720590800.2U Expired - Fee Related CN207368887U (en) | 2017-05-25 | 2017-05-25 | Low pressure bi-directional electric power electronic pressure controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI777736B (en) * | 2021-01-13 | 2022-09-11 | 立錡科技股份有限公司 | Buck-boost switching regulator having bypass mode and control method thereof |
-
2017
- 2017-05-25 CN CN201720590800.2U patent/CN207368887U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI777736B (en) * | 2021-01-13 | 2022-09-11 | 立錡科技股份有限公司 | Buck-boost switching regulator having bypass mode and control method thereof |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180515 Termination date: 20190525 |
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| CF01 | Termination of patent right due to non-payment of annual fee |