CN105914757A - New type low voltage smart reactive power compensator - Google Patents
New type low voltage smart reactive power compensator Download PDFInfo
- Publication number
- CN105914757A CN105914757A CN201610284863.5A CN201610284863A CN105914757A CN 105914757 A CN105914757 A CN 105914757A CN 201610284863 A CN201610284863 A CN 201610284863A CN 105914757 A CN105914757 A CN 105914757A
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- China
- Prior art keywords
- module
- interface
- control module
- reactive power
- main controller
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Classifications
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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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1864—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein the stepless control of reactive power is obtained by at least one reactive element connected in series with a semiconductor switch
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention relates to a new type low voltage smart reactive power compensator which comprises a main controller module, a reactive power acquiring module, a serial communication module, a data storage module, a keyboard interface module, a protection and warning module, and a capacitance switching control module wherein the reactive power acquiring module is connected to the P0 interface of the main controller module, the serial communication module is connected to the P1.0 and P1.1 interfaces of the main controller module respectively for receiving and sending, the data storage module is connected to the P2 interface of the main controller module, the input and display of the keyboard interface module are connected to the P3.0 and P3.1 interfaces respectively, the protection and warning module is connected to the P4 interface of the main controller module, and the capacitance switching module is connected with the P5 interface of the main controller module. With the compensator, it is possible to perform timely and stable reactive compensation to a low voltage power distribution network. Cost-effective and flexible in use, the compensator can achieve rapid switching between capacitances very accurately.
Description
Technical field
The invention belongs to electric reactive compensating technical field, be specifically related to a kind of novel low-voltage intelligent reactive power compensation device.
Background technology
In power system, the quality of power supply is closely-related with the reactive power equilibrium of system, and substantial amounts of reactive power is at circuit
Middle transmission will make the quality of power supply drastically decline, and adversely affect user.In the low voltage electric network of 0.4kV, by idle
Local compensation improves the power factor of electrical network and improves the quality of power supply.Traditional low-voltage reactive compensator great majority due to
A/D sampling precision is low, computationally intensive, higher to the performance requirement of core processor, causes the software design of compensation system with hard
Part design is more complicated, and there is the defects such as control accuracy is low, response speed is slow.
Summary of the invention
Technical problem: the problem existed for above-mentioned prior art, the present invention provides a kind of novel low-voltage intelligent reactive-load compensation to fill
Put.
Technical scheme: the present invention relates to a kind of novel low-voltage intelligent reactive power compensation device, this device includes main control module, nothing
Merit acquisition module, serial communication module, data memory module, keyboard interface module, protection alarm module, capacitor switching control
Module, the most idle acquisition module is connected with the P0 interface of main control module, the reception of serial communication module and send respectively with
P1.0 with the P1.1 interface of main control module is connected, and data memory module is connected with the P2 interface of main control module, and keyboard connects
The input of mouth is connected with P3.0 and P3.1 interface respectively with display, and protection module is connected with the P4 interface of main control module, electricity
Hold switching control module to be connected with the P5 interface of main control module；The idle data gathered are carried out real-time operation by main control module
Processing, user can carry out setting power factor reference value according to grid requirements, and capacitor switching control module on this basis, sends
Switching capacitance control signal, completes corresponding capacitor bank switching, finally realizes the intelligent powerless compensation to electrical network.
A kind of novel low-voltage intelligent reactive power compensation device, it is characterised in that including:
Described main control module, as the kernel control chip of system, controls the operation of whole system, and its main control chip preferentially uses
Single-chip microcomputer C8051F580.
Described idle acquisition module is by the voltage/current transformer being linked in sequence, signal conditioning circuit, data acquisition unit group
Becoming, wherein with electric energy computation chip as core in data acquisition unit, and the electric energy computation chip model preferentially used is
SA9904B。
Described serial communication module is transmission information and order when multiple stage reactive power compensator on-line working.User can pass through face
It is main frame or from machine that plate arranges reactive power compensator, selects the quantity of reactive power compensator according to different compensation capacities, normally
During work, the capacitor switching order sent from machine Receiving Host, complete the switching of Capacitor banks.
Described data memory module uses read-write SD card, and by Large Volume Data real-time storage to SD card, follow-up convenience is downloaded
Use.
Described keyboard interface module includes 4 buttons, it is possible to achieve parameters input is set；Arrange under state non-, aobvious
Show the parameters such as the power factor of each phase, voltage, electric current, reactive power, the operation of real-time monitoring system.
Described protection alarm module includes Alarm Unit and protected location, in overcurrent, overvoltage, crosses the feelings such as harmonic wave, excess temperature
Alarm occurs under condition, and automatically exits from running status.
Described capacitor switching control module includes switching control unit, driver element, power device unit and capacitor bank units.
Switching control unit receives switching command signal, controls conducting and the shutoff of power device through driver element, thus controls electric capacity
The input of device group or excision.
In sum, the method have the advantages that
1, apparatus of the present invention use single idle acquisition module to carry out idle data acquisition, overcome traditional A/D sampling
Precision problem, and decrease the operation time of master controller, thus improve the precision of whole reactive compensation control system so that
Stability and the anti-interference of system are greatly improved.
2, the electric capacity frequent switching problem that apparatus of the present invention occur in overcoming tradition reactive power compensator, the communication module of employing
The group net operation of multiple stage reactive power compensator can be conveniently realized, there is low cost, application flexibly, and it is fast to realize capacitor
The advantage of switching fast, accurate.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the present invention.
Fig. 2 is the theory diagram of idle acquisition module in the present invention.
Fig. 3 is the communication flow diagram of serial communication module in the present invention.
Fig. 4 is the theory diagram of capacitor switching control module in the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment further illustrates technical scheme.
As it is shown in figure 1, a kind of novel low-voltage intelligent reactive power compensation device, including main control module, idle acquisition module, string
Row communication module, data memory module, keyboard interface module, protection alarm module, capacitor switching control module, the most idle
Acquisition module is connected with the P0 interface of main control module, the reception of serial communication module and send respectively with main control module
P1.0 with P1.1 interface is connected, and data memory module is connected with the P2 interface of main control module, the input of keyboard interface and display
Being connected with P3.0 and P3.1 interface respectively, protection module is connected with the P4 interface of main control module, capacitor switching control module
It is connected with the P5 interface of main control module；The idle data gathered are carried out real-time operation process by main control module, and user is permissible
Carrying out setting power factor reference value according to grid requirements, capacitor switching control module on this basis, sends switching capacitance and controls letter
Number, complete corresponding capacitor bank switching, finally realize the intelligent powerless compensation to electrical network.
As in figure 2 it is shown, described idle acquisition module is by the voltage/current transformer being linked in sequence, signal conditioning circuit, data
Collecting unit forms.The voltage of electrical network, electric current are converted into gathering the high-voltage great-current come by voltage, current transformer respectively
Suitably low-voltage, uses differential mode to input to the voltage channel in signal conditioning circuit and current channel, and is converted into and can know
It is transferred in data acquisition unit after other digital signal process, calculates reactive power size through electric energy computation chip,
Finally it is delivered in main control module.Electric energy computation chip preferentially uses SA9904B.
As it is shown on figure 3, when reactive compensation system normally works, main frame can in real time to respectively sending querying command from machine, from machine to
The information that main frame returns includes the capacity of capacitor, switching state, switching time；Main frame timing is to respectively life when machine sends school
Order, to ensure main frame and respectively to keep synchronizing from the time of machine, to send the form realization of broadcasting command during school；When main frame is through logic
When program judges the switching action needing to carry out capacitor from machine, switching order can be sent to this from machine.
As shown in Figure 4, described capacitor switching control module includes switching control unit, driver element, power device unit and electricity
Container group unit.Switching control unit receives switching command signal, controls conducting and the shutoff of power device through driver element,
Thus control input or the excision of Capacitor banks.
Claims (1)
1. a novel low-voltage intelligent reactive power compensation device, it is characterised in that this device includes main control module, idle adopts
Collection module, serial communication module, data memory module, keyboard interface module, protection alarm module, capacitor switching control mould
Block, the most idle acquisition module is connected with the P0 interface of main control module, the reception of serial communication module and send respectively with master
P1.0 with the P1.1 interface of control module is connected, and data memory module is connected with the P2 interface of main control module, keyboard interface
Input with display be connected with P3.0 and P3.1 interface respectively, protect module be connected with the P4 interface of main control module, electric capacity
Switching control module is connected with the P5 interface of main control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610284863.5A CN105914757A (en) | 2016-04-30 | 2016-04-30 | New type low voltage smart reactive power compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610284863.5A CN105914757A (en) | 2016-04-30 | 2016-04-30 | New type low voltage smart reactive power compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105914757A true CN105914757A (en) | 2016-08-31 |
Family
ID=56753515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610284863.5A Pending CN105914757A (en) | 2016-04-30 | 2016-04-30 | New type low voltage smart reactive power compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105914757A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201956690U (en) * | 2011-01-17 | 2011-08-31 | 北京清电华力电气自动化科技有限公司 | High performance reactive compensation comprehensive control device |
| CN102709921A (en) * | 2012-05-30 | 2012-10-03 | 中国电力科学研究院 | Control circuit and control method of low-voltage reactive compensation device |
| CN204651930U (en) * | 2015-04-28 | 2015-09-16 | 淄博联诚电力科技有限公司 | Intelligent Reactive Compensation Equipment |
-
2016
- 2016-04-30 CN CN201610284863.5A patent/CN105914757A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201956690U (en) * | 2011-01-17 | 2011-08-31 | 北京清电华力电气自动化科技有限公司 | High performance reactive compensation comprehensive control device |
| CN102709921A (en) * | 2012-05-30 | 2012-10-03 | 中国电力科学研究院 | Control circuit and control method of low-voltage reactive compensation device |
| CN204651930U (en) * | 2015-04-28 | 2015-09-16 | 淄博联诚电力科技有限公司 | Intelligent Reactive Compensation Equipment |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160831 |
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| WD01 | Invention patent application deemed withdrawn after publication |