CN105827019B - The remote feeding power system and control method of a kind of powered stable - Google Patents
The remote feeding power system and control method of a kind of powered stable Download PDFInfo
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- CN105827019B CN105827019B CN201610398093.7A CN201610398093A CN105827019B CN 105827019 B CN105827019 B CN 105827019B CN 201610398093 A CN201610398093 A CN 201610398093A CN 105827019 B CN105827019 B CN 105827019B
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- input voltage
- distal end
- pressure unit
- end pressure
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
Abstract
The invention discloses a kind of remote feeding power system of powered stable, including：Local supply, the local side boost module being connected with local supply and the far end supply module being connected with local side boost module.Far end supply module includes：Distal end pressure unit, input voltage measurement unit and power adjusting component, power adjusting component receive the input voltage value that input voltage measurement unit detects, and judge whether the output power of reduction distal end pressure unit according to input voltage value.The invention also discloses a kind of control method of above-mentioned remote feeding power system.Present invention introduces input voltage as controlled volume, by way of reducing respective channel distal end pressure unit output power, finally realize that input voltage is controlled and do not enter under-voltage condition, reach the effect that remote feeding power system is continuously in stable power-supplying state.
Description
Technical field
The present invention relates to remote feeding power system technical field, more particularly to a kind of remote feeding power system of powered stable and control
Method processed.
Background technology
The supply line of Remote Power Supply is usually very long, if being used as transmission path, its circuit using telephone wire or cable
Impedance can reach hundreds of ohm and arrive kilohm rank.Since line impedance is larger, so each passage output current allowed
It can be restricted, it will usually with multiplex telephony line or cable to Remote feeding, and pass through multichannel distal end pressure unit in distal end
Output-parallel after again to final load supplying.
Accomplish that power averaging distributes between each distal end pressure unit of distal end output-parallel as far as possible, but due to each distal end
For the incoming line of pressure unit in long distance transmission, length can be variant, and the line impedance of input also can be variant, thus
It cannot carry out output power fully according to power averaging distribution.Because in the case that incoming line impedance is larger, due to identical
Current strap come that pressure drop on incoming line is bigger so that the voltage to distal end pressure unit port is also lower, if output power
Mean allocation, necessarily causes the module input current that input voltage is lower in the pressure unit of distal end bigger, so as to can further lead
Line drop increase is caused, circulation according to this produces vicious circle, ultimately results in input voltage and drops into and is unable to maintain that normal work
Scope, makes this under-voltage shutdown of great distance end pressure unit.After under-voltage shutdown, input current is reduced to close to 0 suddenly, input voltage
Start to recover again, distal end pressure unit is started again, in cycles, this great distance end pressure unit be constantly in machine,
Input undervoltage shutdown, the process of recurrence machine.During this period, this great distance end pressure unit can not be normally load supplying, cause
Whole distal end and the decline of electromechanical source overall system loading capability.Under harsh conditions, it is also possible to because adding the negative of other road bands loads
Load, and vicious circle always, cause whole system power-down rebooting, this is not allowed in practical applications.
Remote Power Supply of the prior art generally controls two ways using input current constant control or output constant current, both
Mode can be in the case where incoming line resistance difference be larger, it is impossible to the output power on each road of smart allocation, to reach whole system
The power output of system optimizes.
Therefore, how to design a kind of energy stable power-supplying, the remote feeding power system that power output optimizes and control method is
Industry technical problem urgently to be resolved hurrily.
The content of the invention
In order to solve the above technical problems, the present invention proposes a kind of remote feeding power system and control method of powered stable, should
Remote feeding power system introduces input voltage as controlled volume, final real by way of reducing distal end pressure unit output power
Existing input voltage, which is controlled, does not enter under-voltage condition, reaches the effect that remote feeding power system is continuously in stable power-supplying state.
The technical solution adopted by the present invention is to design a kind of remote feeding power system of powered stable, including：Local supply,
The local side boost module being connected with local supply and the far end supply module being connected with local side boost module, far end supply module
Output terminal be connected to remote equipment.
Far end supply module includes：Distal end pressure unit, the input voltage measurement for being connected to distal end pressure unit input terminal
Unit, the power adjusting component for being connected with distal end pressure unit and can carrying out reducing adjusting to its output power, distal end is depressured single
The optional DC-DC converter of member.The input voltage value that power adjusting component reception input voltage measurement unit detects, and according to
Input voltage value judges whether to reduce the output power of distal end pressure unit.
Generally powered in actual use by multigroup far end supply wired in parallel to remote equipment, each group far end supply module
Distal end pressure unit output terminal parallel connection is to be supplied to remote equipment.
In one embodiment, power adjusting component includes：Be connected to distal end pressure unit input terminal current regulation unit,
The controller of current regulation unit working status is controlled, controller receives the input voltage that input voltage measurement unit detects
It is worth, and judges whether the input current of reduction distal end pressure unit according to input voltage value.
The invention also discloses a kind of control method of above-mentioned remote feeding power system, comprise the following steps：
Step 1, set under-voltage protection safety limit to power adjusting component in advance, and under-voltage protection safety limit is than power supply system
The under-voltage protection setting value of system is more higher；
Step 2, input voltage measurement unit detect the input voltage value of distal end pressure unit in real time；
Step 3, power adjusting component real-time reception input voltage value, and by input voltage value and under-voltage protection safety limit
Contrasted, when input voltage value reaches under-voltage protection safety limit or when under under-voltage protection safety limit, then walked
Rapid 4, when input voltage value is on under-voltage protection safety limit, then return to step 2；
Step 4, power adjusting component reduce the output power of distal end pressure unit, until input voltage value is located at under-voltage guarantor
Protect on safety limit, return again to step 2.
Wherein, the power adjusting component in step 1 includes：It is connected to the current regulation list of distal end pressure unit input terminal
The controller of member, control current regulation unit working status.
Step 1 is in advance to controller setting under-voltage protection safety limit；Step 3 device real-time reception input voltage in order to control
Value, and input voltage value and under-voltage protection safety limit are contrasted；Step 4 reduces distal end for current regulation unit and is depressured list
The input current of member.
The present invention uses the closed-loop control of input voltage, the output power of distal end pressure unit is controlled, when input voltage reaches
During to under-voltage protection safety limit, by reducing the output power of distal end pressure unit, to lift the input of distal end pressure unit
Voltage, is realized in the case of long distance powedr transmission, and the input voltage of distal end pressure unit maintains more than under-voltage protection safety limit.
When there is multigroup far end supply wired in parallel to power to remote equipment, the module of each parallel operation in whole remote feeding power system
Power output is kept in the range of maximum possible, improves the peak power output and job stability of whole remote power feeding system.
Brief description of the drawings
With reference to embodiment and attached drawing, the present invention is described in detail, wherein：
Fig. 1 is the module connection diagram of the present invention；
Fig. 2 is the circuit connection diagram of the present invention；
Fig. 3 is the circuit connection diagram of power adjusting component of the present invention；
Fig. 4 is the control flow schematic diagram of the present invention.
Embodiment
As shown in Figure 1, remote feeding power system proposed by the present invention, including：Local supply, the local side being connected with local supply
Boost module and the far end supply module being connected with local side boost module, the output terminal of far end supply module are connected to distal end and set
It is standby.Since local side boost module and far end supply module are connected by circuit over long distances, circuit is there are impedance, equivalent in local side
Resistance is in series between boost module and far end supply module.In use, the output voltage of local supply is through local side boost module
After boosting, high-voltage transmission to far end supply module, after the change of far end supply module is depressed into the standard input voltage needed for remote equipment,
Power to remote equipment.
Wherein, far end supply module includes：Distal end pressure unit, the input voltage for being connected to distal end pressure unit input terminal
Detection unit, the power adjusting component for being connected with distal end pressure unit and can carrying out reducing adjusting to its output power, distal end drops
DC-DC converter can be selected in pressure unit.The input voltage of far end supply module uses closed-loop control, and input voltage measurement unit is real
When detect distal end pressure unit input voltage value, which is sent to power adjusting component, in advance to power tune
Save and under-voltage protection safety limit is set in component, when input voltage value reaches or during less than the under-voltage protection safety limit, power
Adjusting part reduces the output power of distal end pressure unit.The present invention can guarantee that under various incoming line impedance conditions, distal end
Pressure unit can be exported normally, and just provide corresponding energy without making incoming line pressure drop is excessive to cause input to be owed
Pressure protection, compared with prior art in input current constant control and output constant power control etc., have very high network adaptability.
As shown in Fig. 2, generally powered in actual use by multigroup far end supply wired in parallel to remote equipment, each group far end
The distal end pressure unit input terminal of power module is connected in parallel to local side boost module, the distal end decompression of each group far end supply module
Unit output terminal is connected in parallel to remote equipment, and each distal end pressure unit can carry out power according to the optimal power mode that goes out
Output.
As shown in figure 3, in one embodiment, power adjusting component includes：It is connected to the electricity of distal end pressure unit input terminal
Flow adjustment unit, control the controller of current regulation unit working status, controller receives input voltage measurement unit and detects
Input voltage value, and according to input voltage value judge whether reduce distal end pressure unit input current.In this embodiment,
Using input voltage as controlled volume, the closed loop of input voltage is adjusted into controlled quentity controlled variable of the output as current limliting, it is final to realize input electricity
Pressure is controlled to just not less than this operating point of under-voltage protection safety limit, and far end supply module can be kept to be constantly in fortune
Row working status, makes the far end supply module of each parallel operation in whole remote feeding power system be kept in the range of maximum possible
Power output, improves the peak power output and job stability of whole parallel system.
The invention also discloses a kind of control method of above-mentioned remote feeding power system, comprise the following steps：
Step 1, set under-voltage protection safety limit to power adjusting component in advance；
Step 2, input voltage measurement unit detect the input voltage value of distal end pressure unit in real time, and under-voltage protection limits safely
Value is more higher than the under-voltage protection setting value of power-supply system；
Step 3, power adjusting component real-time reception input voltage value, and by input voltage value and under-voltage protection safety limit
Contrasted, when input voltage value reaches under-voltage protection safety limit or when under under-voltage protection safety limit, then walked
Rapid 4, when input voltage value is on under-voltage protection safety limit, then return to step 2；
Step 4, power adjusting component reduce the output power of distal end pressure unit, until input voltage value is located at under-voltage guarantor
Protect on safety limit, return again to step 2.
Wherein, in one embodiment, the power adjusting component in step 1 includes：It is connected to distal end pressure unit input terminal
Current regulation unit, control current regulation unit working status controller.
As shown in figure 4, the specific steps of the embodiment include：
Step 1, set under-voltage protection safety limit to controller in advance；
Step 2, input voltage measurement unit detect the input voltage value of distal end pressure unit in real time；
Step 3, controller real-time reception input voltage value, and input voltage value and under-voltage protection safety limit are carried out pair
Than, when input voltage value reaches under-voltage protection safety limit or when under under-voltage protection safety limit, then step 4 is carried out, when
When input voltage value is on under-voltage protection safety limit, then return to step 2；
Step 4, current regulation unit reduce the input current of distal end pressure unit, until input voltage value is located at under-voltage guarantor
Protect on safety limit, return again to step 2.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of remote feeding power system of powered stable, including：Local supply, the local side being connected with local supply boosting mould
Block and the far end supply module being connected with the local side boost module, the output terminal of the far end supply module are connected to distal end
Equipment；
It is characterized in that, the far end supply module includes：Distal end pressure unit, be connected to the distal end pressure unit input terminal
Input voltage measurement unit, be connected with the distal end pressure unit and its output power can be carried out reduce adjusting power tune
Save component；
The power adjusting component includes：Be connected to the distal end pressure unit input terminal current regulation unit, control described in
The controller of current regulation unit working status, the controller receive the input electricity that the input voltage measurement unit detects
Pressure value, and judged whether according to input voltage value to reduce the input current of the distal end pressure unit.
2. remote feeding power system as claimed in claim 1, it is characterised in that the output terminal of the local side boost module is parallel with multigroup
The far end supply module, the distal end pressure unit output terminal of each group far end supply module are connected in parallel to the remote equipment.
3. remote feeding power system as claimed in claim 1 or 2, it is characterised in that the distal end pressure unit converts for DC-DC
Device.
4. the control method of remote feeding power system described in a kind of any of the above-described claim, it is characterised in that including following step
Suddenly：
Step 1, set under-voltage protection safety limit to power adjusting component in advance；
Step 2, input voltage measurement unit detect the input voltage value of distal end pressure unit in real time；
Step 3, power adjusting component real-time reception input voltage value, and input voltage value and under-voltage protection safety limit are carried out
Contrast, when input voltage value reaches under-voltage protection safety limit or when under under-voltage protection safety limit, then carries out step 4,
When input voltage value is on under-voltage protection safety limit, then return to step 2；
Step 4, power adjusting component reduce the output power of distal end pressure unit, until input voltage value is located at under-voltage protection peace
On full limit value, step 2 is returned again to.
5. control method as claimed in claim 4, it is characterised in that the power adjusting component in the step 1 includes：Connection
Current regulation unit, the controller of the control current regulation unit working status in the distal end pressure unit input terminal.
6. control method as claimed in claim 5, it is characterised in that the step 1 is in advance to the under-voltage guarantor of controller setting
Protect safety limit；The step 3 device real-time reception input voltage value, and input voltage value and under-voltage protection are limited safely in order to control
Value is contrasted；The step 4 reduces the input current of distal end pressure unit for current regulation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610398093.7A CN105827019B (en) | 2016-06-07 | 2016-06-07 | The remote feeding power system and control method of a kind of powered stable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610398093.7A CN105827019B (en) | 2016-06-07 | 2016-06-07 | The remote feeding power system and control method of a kind of powered stable |
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| Publication Number | Publication Date |
|---|---|
| CN105827019A CN105827019A (en) | 2016-08-03 |
| CN105827019B true CN105827019B (en) | 2018-05-01 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203643882U (en) * | 2013-12-17 | 2014-06-11 | 武汉永力科技股份有限公司 | Far-end voltage feedback circuit and switching power supply |
| CN104460792A (en) * | 2013-09-18 | 2015-03-25 | 中国电信股份有限公司 | POE (power sourcing equipment) system and voltage control method and voltage stabilizer thereof |
| CN105186487A (en) * | 2015-07-06 | 2015-12-23 | 深圳市航天新源科技有限公司 | Power conversion system for long-distance and multi-interval equipment power supply and distribution |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014080337A2 (en) * | 2012-11-26 | 2014-05-30 | Koninklijke Philips N.V. | Signal-level based control of power grid load systems |
-
2016
- 2016-06-07 CN CN201610398093.7A patent/CN105827019B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104460792A (en) * | 2013-09-18 | 2015-03-25 | 中国电信股份有限公司 | POE (power sourcing equipment) system and voltage control method and voltage stabilizer thereof |
| CN203643882U (en) * | 2013-12-17 | 2014-06-11 | 武汉永力科技股份有限公司 | Far-end voltage feedback circuit and switching power supply |
| CN105186487A (en) * | 2015-07-06 | 2015-12-23 | 深圳市航天新源科技有限公司 | Power conversion system for long-distance and multi-interval equipment power supply and distribution |
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| CN105827019A (en) | 2016-08-03 |
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Address after: 518000, 5 floor, Fengyun mansion, five road north, Nanshan District science and Technology Park, Shenzhen, Guangdong Patentee after: Shenzhen Weimei New Energy Co., Ltd. Address before: 518000, 4 floor, Fengyun mansion, five road north, Nanshan District science and Technology Park, Shenzhen, Guangdong Patentee before: Shenzhen Vmax Power Co., Ltd. |
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