CN106684876A - Tail-end low-voltage compensation device of rural power grid - Google Patents
Tail-end low-voltage compensation device of rural power grid Download PDFInfo
- Publication number
- CN106684876A CN106684876A CN201710043237.1A CN201710043237A CN106684876A CN 106684876 A CN106684876 A CN 106684876A CN 201710043237 A CN201710043237 A CN 201710043237A CN 106684876 A CN106684876 A CN 106684876A
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- Prior art keywords
- voltage
- harvester
- output end
- input
- module
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a tail-end low-voltage compensation device at the tail end of a rural power grid, and relates to the technical field of voltage regulation devices. The tail-end low-voltage compensation device comprises a tank, an input-end current acquisition device, an input-end voltage acquisition device, an output-end current acquisition device, an output-end voltage acquisition device and a voltage compensation module. States of switches S1-S3 can be changed under the control of the voltage compensation module according to current and voltage information acquired by the input-end current acquisition device, the input-end voltage acquisition device, the output-end current acquisition device and the output-end voltage acquisition device, and power can be directly supplied for users by the low-voltage power grid or can be supplied for the users after the low-voltage power grid is compensated by the voltage compensation module. The tail-end low-voltage compensation device has the advantages that the problem of excessively low voltages at the tail end of an existing rural power grid can be solved, normal electric power utilization of residents can be guaranteed, good compensation effects can be realized, and the tail-end low-voltage compensation device is simple in structure and convenient to mount and maintain.
Description
Technical field
The present invention relates to voltage regulating device technical field, more particularly to a kind of rural power grids end low-voltage compensation dress
Put.
Background technology
Rural areas in our country generally existing region is relatively vast and the not high situation of load aggregation extent, a station power distribution transformation
The supply district radius of device is even more big often beyond 500 meters.And, affected by factors such as geographical environment, economic developments, power
The stolen frequency of circuit it is high and be forced to use aluminum conductor, it is commonplace the problems such as running environment is severe, many rural areas are all present
The low situation of utilization voltage, indivedual areas voltage of registering one's residence is even as low as below 150V, the basic living demand such as company illuminates, cooks
All cannot meet.
The content of the invention
The technical problem to be solved is to provide a kind of rural power grids end low-voltage compensating device, described device
Can not only solve the problems, such as that end low pressure is too low in rural power grids, ensure resident's normal electricity consumption, and compensation effect is good, structure is simple
It is single, convenient for installation and maintenance.
To solve above-mentioned technical problem, the technical solution used in the present invention is：A kind of rural power grids end low-voltage is mended
Repay device, including casing, it is characterised in that：Also include input current collecting device, input terminal voltage harvester, output end
Current collecting device, output end voltage harvester and voltage compensation module, the voltage compensation block coupled in series in L phase lines,
The input current collecting device and input terminal voltage harvester are located in the L phase lines of the voltage compensation module front end,
For the electric current and information of voltage of collection voltages compensating module input；The output end current harvester and output end voltage
Harvester be located at the voltage compensation module rear end L phase lines on, for collection voltages compensating module output end electric current and
Information of voltage；The input current collecting device, input terminal voltage harvester, output end current harvester and output end
Voltage collecting device is connected with the signal input part of the voltage compensation module, input terminal voltage harvester and voltage compensation mould
Normally opened gate-controlled switch S1, the benefit between output end voltage harvester and voltage compensation module are in series with L phase lines between block
Repay and be in series with line normally opened gate-controlled switch S3, a termination input terminal voltage harvester of normally closed gate-controlled switch S2 is controllable with normally opened
L phase lines between switch S1, the normally opened gate-controlled switch S3 of another termination and the output end voltage harvester of normally closed gate-controlled switch S2
Between compensating line；The voltage compensation module is used for according to input electric current, voltage collecting device and output end current, voltage
The electric current and information of voltage of harvester collection controls the switch S1-S3 and changes state, is that user is direct by low voltage electric network
It is customer power supply after powering or low voltage electric network is compensated by the voltage compensation module.
Further technical scheme is：The voltage compensation module includes microprocessor, AC-DC converter units, energy
Storage device, electric power detection module, wave filter, inverter and adjustable transformer, the normally opened gate-controlled switch S1 of L phase lines Jing and institute
State the input connection of AC-DC converter units, the input current collecting device, input terminal voltage harvester, output end
Current collecting device and output end voltage harvester are connected with the signal input part of the voltage compensation module, the AC-DC
The output end of converter unit is connected with the input of the energy storing device, the output end of energy storing device Jing successively
Electric power detection module, wave filter, inverter are connected with the primary of the step-up transformer, output end Jing of the adjustable transformer
The normally opened gate-controlled switch S3 is connected with the compensating line, the detection output of the electric power detection module and the microprocessor
Signal input part connection.
Further technical scheme is：The voltage collecting device is voltage transformer, and the current collecting device is
Current transformer.
Further technical scheme is：The voltage compensation module also includes human-computer interaction module, the man-machine interaction
Module is bi-directionally connected with the microprocessor, for being input into the data of control command and display output.
Further technical scheme is：The voltage compensation module also includes long range radio transmissions module, described long-range
Wireless transport module is bi-directionally connected with the microprocessor, for receiving the control command of remote terminal transmission and by the compensation
The state of plant running is sent to remote terminal.
It is using the beneficial effect produced by above-mentioned technical proposal：Described device can be carried with effective guarantee power supply quality
High voltage qualification rate, and voltage compensation is carried out by using energy storing device, the pollution of input electric energy harmonic wave is reduced, it is defeated
Go out efficiency high, can long continuous operation, it is applied widely；With voltage boosting effect it is good, device volume is little, power consumption is low excellent
Point.
Description of the drawings
With reference to the accompanying drawings and detailed description the present invention is further detailed explanation.
Fig. 1 is the electrical principle block diagram of embodiment of the present invention described device；
Fig. 2 is the theory diagram of voltage compensation module in embodiment of the present invention described device；
Wherein：1st, input current collecting device 2, input terminal voltage harvester 3, output end current harvester 4, output end
Voltage collecting device.
Specific embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description, it is clear that described embodiment a part of embodiment only of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Many details are elaborated in the following description in order to fully understand the present invention, but the present invention can be with
It is different from alternate manner described here to implement using other, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by following public specific embodiment.
As shown in figure 1, a kind of rural power grids end low-voltage compensating device, including casing, also adopt including input electric current
Acquisition means, input terminal voltage harvester, output end current harvester, output end voltage harvester and voltage compensation mould
Block, it is preferred that the voltage collecting device is voltage transformer, the current collecting device is current transformer.The voltage
Compensating module is connected in L phase lines, and the input current collecting device and input terminal voltage harvester are located at the voltage
In the L phase lines of compensating module front end, for the electric current and information of voltage of collection voltages compensating module input；The output end electricity
Stream harvester and output end voltage harvester are located in the L phase lines of the voltage compensation module rear end, for collection voltages
The electric current and information of voltage of compensating module output end；The input current collecting device, input terminal voltage harvester, output
End current collecting device and output end voltage harvester are connected with the signal input part of the voltage compensation module, input electricity
Normally opened gate-controlled switch S1, output end voltage harvester are in series with L phase lines between pressure harvester and voltage compensation module
Be in series with normally opened gate-controlled switch S3 on the compensating line between voltage compensation module, a termination input of normally closed gate-controlled switch S2
L phase lines between voltage collecting device and normally opened gate-controlled switch S1, the normally opened gate-controlled switch of another termination of normally closed gate-controlled switch S2
Compensating line between S3 and output end voltage harvester；The voltage compensation module is used to be adopted according to input electric current, voltage
Acquisition means and output end current, the electric current of voltage collecting device collection and information of voltage control the switch S1-S3 and change state,
It is for user's confession after user is directly powered or low voltage electric network is compensated by the voltage compensation module by low voltage electric network
Electricity.
When voltage compensation module monitors input by input current collecting device and input terminal voltage harvester
Voltage it is normal when（>=198V, highest can arrange 220V）, microprocessor controls normally closed gate-controlled switch S2 and closes, by low pressure
The bypass of circuit is customer power supply；Meanwhile, the electricity of energy storing device storage is detected by electric power detection module, if electricity
It is that the energy storing device charges less than default value, then microprocessor controls normally opened gate-controlled switch S1 closures, Zhi Daochong
Till full, microprocessor controls normally opened gate-controlled switch S1 and opens.
When voltage compensation module monitors input by input current collecting device and input terminal voltage harvester
Low voltage when（＜ 198V）, pressure regulation operating instruction is sent, while controlling the switch S2 and switch S3 closures, control
Make normally opened gate-controlled switch S1 to open, voltage is compensated by voltage compensation module, with lifting end utilization voltage.
Subsequently, on the collection point after power network compensation point, sampled by output end current sampling apparatus and output end voltage
Device carries out electric current, voltage acquisition, to reach the purpose of closed-loop control.
As shown in Fig. 2 the voltage compensation module includes microprocessor, AC-DC converter units, energy storing device, electricity
Amount detection module, wave filter, inverter and adjustable transformer, the normally opened gate-controlled switch S1 and AC-DC of L phase lines Jing is converted
The input connection of unit, the input current collecting device, input terminal voltage harvester, output end current harvester
Be connected with the signal input part of the voltage compensation module with output end voltage harvester, the AC-DC converter units it is defeated
Go out end to be connected with the input of the energy storing device, the output end of energy storing device Jing electric power detections mould successively
The primary of block, wave filter, inverter and the step-up transformer is connected, it is normally opened described in output end Jing of the adjustable transformer can
Control switch S3 is connected with the compensating line, the signal input of the detection output of the electric power detection module and the microprocessor
End connection.
When voltage compensation module carries out voltage compensation, microprocessor is calculated according to the voltage and current information that input is gathered
Offset voltage control parameter and regulated value, controlling adjustable transformer output needs the voltage of compensation, to reach the mesh of voltage compensation
's.
Additionally, input control command for convenience and display data, the voltage compensation module is also including man-machine interaction
Module, the human-computer interaction module is bi-directionally connected with the microprocessor, for being input into the data of control command and display output.
The voltage compensation module also includes long range radio transmissions module, the long range radio transmissions module and micro- place
Reason device is bi-directionally connected, for receiving the control command of remote terminal transmission and the state that the compensation device is run being sent to remote
Journey terminal.Remotely control can be easily carried out by arranging wireless transport module.
Claims (5)
1. a kind of rural power grids end low-voltage compensating device, including casing, it is characterised in that：Also include input current acquisition
Device, input terminal voltage harvester, output end current harvester, output end voltage harvester and voltage compensation module,
In L phase lines, the input current collecting device and input terminal voltage harvester are located at the voltage compensation block coupled in series
In the L phase lines of the voltage compensation module front end, for the electric current and information of voltage of collection voltages compensating module input；It is described
Output end current harvester and output end voltage harvester are located in the L phase lines of the voltage compensation module rear end, are used for
The electric current and information of voltage of collection voltages compensating module output end；The input current collecting device, input terminal voltage collection
Device, output end current harvester and output end voltage harvester connect with the signal input part of the voltage compensation module
Connect, normally opened gate-controlled switch S1, output end electricity are in series with the L phase lines between input terminal voltage harvester and voltage compensation module
Press and normally opened gate-controlled switch S3 is in series with the compensating line between harvester and voltage compensation module, the one of normally closed gate-controlled switch S2
L phase lines between termination input terminal voltage harvester and normally opened gate-controlled switch S1, another termination of normally closed gate-controlled switch S2 is normal
Open the compensating line between gate-controlled switch S3 and output end voltage harvester；The voltage compensation module is used for according to input electricity
Stream, voltage collecting device and output end current, the electric current of voltage collecting device collection and information of voltage control the switch S1-S3
Change state, is after user is directly powered or low voltage electric network is compensated by the voltage compensation module by low voltage electric network
For customer power supply.
2. rural power grids end as claimed in claim 1 low-voltage compensating device, it is characterised in that：The voltage compensation module
Including microprocessor, AC-DC converter units, energy storing device, electric power detection module, wave filter, inverter and pressure regulation transformation
Device, the normally opened gate-controlled switch S1 of L phase lines Jing is connected with the input of the AC-DC converter units, and the input electric current is adopted
Acquisition means, input terminal voltage harvester, output end current harvester and output end voltage harvester are mended with the voltage
The signal input part connection of module is repaid, the output end of the AC-DC converter units connects with the input of the energy storing device
Connect, the output end of the energy storing device Jing electric power detection modules, wave filter, inverter and the step-up transformer successively
Primary connection, normally opened gate-controlled switch S3 described in output end Jing of the adjustable transformer is connected with the compensating line, the electricity
The detection output of detection module is connected with the signal input part of the microprocessor.
3. rural power grids end as claimed in claim 1 low-voltage compensating device, it is characterised in that：The voltage collecting device
For voltage transformer, the current collecting device is current transformer.
4. rural power grids end as claimed in claim 2 low-voltage compensating device, it is characterised in that：The voltage compensation module
Also include human-computer interaction module, the human-computer interaction module is bi-directionally connected with the microprocessor, for being input into control command simultaneously
The data of display output.
5. rural power grids end as claimed in claim 2 low-voltage compensating device, it is characterised in that：The voltage compensation module
Also include long range radio transmissions module, the long range radio transmissions module is bi-directionally connected with the microprocessor, remote for receiving
The control command of journey terminal transmission simultaneously sends the state that the compensation device is run to remote terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043237.1A CN106684876A (en) | 2017-01-21 | 2017-01-21 | Tail-end low-voltage compensation device of rural power grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043237.1A CN106684876A (en) | 2017-01-21 | 2017-01-21 | Tail-end low-voltage compensation device of rural power grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106684876A true CN106684876A (en) | 2017-05-17 |
Family
ID=58859772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710043237.1A Pending CN106684876A (en) | 2017-01-21 | 2017-01-21 | Tail-end low-voltage compensation device of rural power grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106684876A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086669A (en) * | 2017-06-13 | 2017-08-22 | 深圳国电粤能节能科技有限公司 | A kind of intelligence relaying supply unit |
| CN111049149A (en) * | 2019-12-10 | 2020-04-21 | 东北电力大学 | Power grid terminal low voltage treatment method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04317523A (en) * | 1991-04-15 | 1992-11-09 | Mitsubishi Electric Corp | Voltage fluctuation compensator |
| CN101572413A (en) * | 2009-06-05 | 2009-11-04 | 武汉珞珈天铭电气科技有限公司 | Low-voltage line voltage compensating device and compensating method thereof |
| CN202103434U (en) * | 2011-06-15 | 2012-01-04 | 无锡双力电力设备有限公司 | DVR based on super capacitor |
| CN102664414A (en) * | 2012-05-04 | 2012-09-12 | 深圳市理工新能源有限公司 | Dynamic voltage compensator |
| CN205070444U (en) * | 2015-10-19 | 2016-03-02 | 山东特安节能技术有限公司 | Low pressure circuit terminal voltage compensation arrangement |
| CN205565727U (en) * | 2016-03-18 | 2016-09-07 | 武汉武新电气科技股份有限公司 | Hoisting device is synthesized to rural power grids low -voltage on post |
-
2017
- 2017-01-21 CN CN201710043237.1A patent/CN106684876A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04317523A (en) * | 1991-04-15 | 1992-11-09 | Mitsubishi Electric Corp | Voltage fluctuation compensator |
| CN101572413A (en) * | 2009-06-05 | 2009-11-04 | 武汉珞珈天铭电气科技有限公司 | Low-voltage line voltage compensating device and compensating method thereof |
| CN202103434U (en) * | 2011-06-15 | 2012-01-04 | 无锡双力电力设备有限公司 | DVR based on super capacitor |
| CN102664414A (en) * | 2012-05-04 | 2012-09-12 | 深圳市理工新能源有限公司 | Dynamic voltage compensator |
| CN205070444U (en) * | 2015-10-19 | 2016-03-02 | 山东特安节能技术有限公司 | Low pressure circuit terminal voltage compensation arrangement |
| CN205565727U (en) * | 2016-03-18 | 2016-09-07 | 武汉武新电气科技股份有限公司 | Hoisting device is synthesized to rural power grids low -voltage on post |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086669A (en) * | 2017-06-13 | 2017-08-22 | 深圳国电粤能节能科技有限公司 | A kind of intelligence relaying supply unit |
| CN111049149A (en) * | 2019-12-10 | 2020-04-21 | 东北电力大学 | Power grid terminal low voltage treatment method |
| CN111049149B (en) * | 2019-12-10 | 2022-09-09 | 东北电力大学 | Power grid terminal low voltage treatment method |
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