CN108462186A - Hybrid reactive power compensation device - Google Patents
Hybrid reactive power compensation device Download PDFInfo
- Publication number
- CN108462186A CN108462186A CN201710091193.XA CN201710091193A CN108462186A CN 108462186 A CN108462186 A CN 108462186A CN 201710091193 A CN201710091193 A CN 201710091193A CN 108462186 A CN108462186 A CN 108462186A
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- icms
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- power
- capacitor
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- 239000003990 capacitor Substances 0.000 claims abstract description 37
- 230000003068 static effect Effects 0.000 claims abstract description 29
- 238000004891 communication Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims 1
- 230000004044 response Effects 0.000 abstract description 15
- 230000010354 integration Effects 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009131 signaling function Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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
-
- 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
- H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
-
- 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
- Y02E40/10—Flexible AC transmission systems [FACTS]
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention proposes a kind of hybrid reactive power compensation device, the collection that power grid net presses load information is carried out by static reactive generator, and capacitor switching signal is sent out to ICMS controllers, reactive-load compensation of the power capacitor come optimized integration is put into and cut off by ICMS controllers, and fine reactive-load compensation is supplemented by SVG again.The variation of reactive load is tracked by SVG, realizes quick response.The device compensation capacity realizes that large capacity compensation, dynamic responding speed can greatly reduce dynamic response time based on SVG based on capacitor.
Description
Technical field
The present invention relates to the reactive-load compensation fields of power quality controlling, and in particular, to a kind of mixed type reactive-load compensation dress
It sets.
Background technology
Current Reactive Compensation Mode is broadly divided into following two：One, reactive-load compensation is realized using electric capacitor；Two,
Using static reactive generator (SVG) send out capacity current compensate it is idle.
Wherein, when carrying out reactive-load compensation using power capacitor, response speed is slow, and can not achieve full compensation.
Static reactive generator (Static Var Generator, SVG) is that one kind is opened up based on voltage-source type PWM rectifier
Structure is flutterred, by adjusting rectifier outlet side voltage magnitude, phase adjusts current on line side amplitude, phase to which no harmonic wave connects indirectly
The reactive power compensator of new generation of continuous dynamic compensating power.SVG response speeds it is remote high and with no harmonic wave dynamically without very poor
Reactive-load compensation characteristic, be present optimal Scheme of Reactive Power Compensation.
When sending out capacity current using static reactive generator come compensating reactive power, because it uses modern power electronic skill
Art can obtain good compensation effect, but individual module capacity is little, and cost is too high.
Invention content
The purpose of the present invention is to provide a kind of hybrid reactive power compensation devices, can be real in conjunction with the advantages of two kinds of compensation
Existing quick response, and it is of low cost.
To achieve the goals above, the present invention proposes a kind of hybrid reactive power compensation device, including：Static reacance occurs
Device, power capacitor and ICMS controllers；The static reactive generator is communicated with the ICMS controllers；The electric power
Capacitor is connected with the ICMS controllers；
Wherein, the net in the static reactive generator acquisition power grid presses load information, and sends out capacitor switching signal extremely
The ICMS controllers, and remaining reactive power in static reactive generator compensation network system；
The ICMS controllers are judged and are responded to the capacitor switching signal, and the capacitor switching signal is converted
It is acted on combination switch for level signal, for putting into and cutting off power capacitor.
Further, further include display in the hybrid reactive power compensation device, the display with it is described
ICMS controllers carry out 485 communications.
Further, further include DC power supply in the hybrid reactive power compensation device, the DC power supply connection
The ICMS controllers and display.
Further, in the hybrid reactive power compensation device, the static reactive generator is controlled with the ICMS
Device processed carries out 485 communications using Modbus agreements.
Further, in the hybrid reactive power compensation device, the number of the power capacitor is 10-18.
Further, in the hybrid reactive power compensation device, the ICMS controllers include parameter setting list
Member, for carrying out parameter setting.
Compared with prior art, the beneficial effects are mainly as follows：Power grid is carried out by static reactive generator
The collection of net pressure load information, and capacitor switching signal is sent out to ICMS controllers, it is put into and is cut off by ICMS controllers
Power capacitor carrys out the reactive-load compensation of optimized integration, and fine reactive-load compensation is supplemented by SVG again.The variation of reactive load by
SVG is tracked, and realizes quick response.The device compensation capacity realizes large capacity compensation, dynamic responding speed based on capacitor
Based on SVG, dynamic response time can be greatly reduced.
Description of the drawings
Fig. 1 is the structure diagram of hybrid reactive power compensation device in one embodiment of the invention；
Fig. 2 is the electrical block diagram of hybrid reactive power compensation device in one embodiment of the invention.
Specific implementation mode
The hybrid reactive power compensation device of the present invention is described in more detail below in conjunction with schematic diagram, wherein indicating
The preferred embodiment of the present invention, it should be appreciated that those skilled in the art can change invention described herein, and still real
The advantageous effects of the existing present invention.Therefore, following description should be understood as the widely known of those skilled in the art, and simultaneously
Not as limitation of the present invention.
For clarity, not describing whole features of practical embodiments.In the following description, it is not described in detail well known function
And structure, because they can make the present invention chaotic due to unnecessary details.It will be understood that opening in any practical embodiments
In hair, it is necessary to make a large amount of implementation details to realize the specific objective of developer, such as according to related system or related business
Limitation, another embodiment is changed by one embodiment.Additionally, it should think that this development may be complicated and expend
Time, but it is only to those skilled in the art routine work.
The present invention is more specifically described by way of example with reference to attached drawing in the following passage.It is wanted according to following explanation and right
Ask book, advantages and features of the invention that will become apparent from.It should be noted that attached drawing is all made of very simplified form and uses non-
Accurately ratio, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
It please refers to Fig.1 and Fig. 2, in the present embodiment, it is proposed that a kind of hybrid reactive power compensation device, including：Static nothing
Work(generator, power capacitor and ICMS controllers (Centralized Controller)；The static reactive generator is controlled with the ICMS
Device carries out 485 communications using Modbus agreements；The power capacitor is connected with the ICMS controllers；Wherein, described static
Reacance generator acquires the net in power grid and presses load information, and sends out capacitor switching signal to the ICMS controllers, and described
Static reactive generator compensates remaining reactive power in network system；The ICMS controllers do the capacitor switching signal
Go out judgement and response, converting the capacitor switching signal to level signal acts on combination switch, for putting into and cutting off
Power capacitor.
In the present embodiment, the present invention provide a kind of cheap and efficient reactive compensation system be by software to power grid
Idle reasonable distribution realizes the Scheme of Reactive Power Compensation of optimization.
Specifically, hybrid reactive power compensation device includes static reactive generator, power capacitor and ICMS controllers, this
System realizes the communication between static reactive generator and ICMS controllers in the form of MODBUS agreements, completes data and shows,
Parameter setting, capacitor switching obtain function.In addition, further including display and DC power supply, wherein described in the DC power supply connection
ICMS controllers and display, the display carries out 485 communications with the ICMS controllers, for showing relevant parameter etc..
The number of the power capacitor is 10-18, and particular number can be selected according to requiring.
The static reactive generator is responsible for sampling the information such as the net pressure load current in power grid, passes through instantaneous reactive algorithm
Reactive power is extracted, for sending out in capacitor switching signal to ICMS controllers, while being compensated remaining idle in network system
Power.
The ICMS controllers include parameter set unit, for carrying out parameter setting.Specifically, the ICMS controls
Device is with the following functions：
a:The throwing capacitance instruction that static reactive generator is sent out is judged and responded, command information is converted into level
Signal function is on combination switch, for putting into and cutting off capacitance.
b：Systematic parameter is configured, 485 communication settings " CT no-load voltage ratios ", " target power factor ", " input threshold quantity are passed through
Value ", " cutting out door restrictor ", " input delay time ", the parameters such as " excision delay time " " overvoltage protection ".
c:The information of power grid is monitored, static reactive generator after calculating, passes through collected information
Modbus agreements are by " network voltage ", " load current ", " reactive power ", " active power " " apparent energy ", " power factor "
It is transferred in ICMS controllers Deng some information, completes the monitoring function to electric network information.
d:The working condition for allocating static reactive generator and capacitance reactive compensation, concentration control is carried out to the compensation of the two
System.
Static reactive generator (SVG) the acquisition electric network information and load current information, are carried by instantaneous reactive algorithm
Take out reactive power.Since the switching frequency of IGBT in static reactive generator is 20KHZ, the sampling period is 400 μ s, SVG energy
The situation of change of tracking load quickly, realizes dynamic compensation process, if the reactive power being calculated exceeds itself capacity,
SVG can send out one and throw in capacitance signal to ICMS controllers, and controller, which judges whether to meet, throws the interval time that capacitance needs,
Meet condition and just convert command information to level signal and act on combination switch, completes capacitor switching function.When in system
When existing reactive power is less than the capacity of single capacitance, ICMS controllers can send out that SVG input capacitances are informed in instruction
Number and each capacitance size, the reactive power size that then SVG is exported according to ICMS controllers instruction adjust automatically are real
The full compensation of existing reactive power.
In the present embodiment, when detecting the reactive power of power grid, SVG can operate at full capacity, for compensating load
The reactive power of generation, simultaneously SVG reactive power size can be sent in ICMS controllers, ICMS controllers receive
It can be judged after the information of SVG, after reaching input capacitive conditions, ICMS controllers can control combination switch action, directly
When being less than single capacitance reactive power to the reactive power detected, SVG output reactive powers just can be by remaining nothing
Work(power compensates entirely.When loading reactive current mutation, SVG makes quick response, completes the tracking of reactive current,
Capacitance is made a response again later.In the present embodiment, described
As it can be seen that hybrid reactive power compensation device of the present invention combines the advantages of two schemes in the prior art, basic nothing
Work(compensation is completed by capacitance, and fine reactive-load compensation is completed by SVG.Idle variation is loaded by SVG to track, is realized quick
Response.If there is overcompensation situation, SVG can send out inductive reactive power to compensate the idle of benefit at once.The system balance capacity
Based on capacitor, realize that large capacity compensation, the dynamic responding speed of the system substantially reduce dynamic response based on SVG
Time.
To sum up, it in hybrid reactive power compensation device provided in an embodiment of the present invention, is carried out by static reactive generator
Power grid net presses the collection of load information, and sends out capacitor switching signal to ICMS controllers, by ICMS controllers carry out input and
Excision power capacitor carrys out the reactive-load compensation of optimized integration, and fine reactive-load compensation is supplemented by SVG again.The change of reactive load
Change is tracked by SVG, realizes quick response.The device compensation capacity realizes large capacity compensation, dynamic response based on capacitor
Speed can greatly reduce dynamic response time based on SVG.
The preferred embodiment of the present invention is above are only, does not play the role of any restrictions to the present invention.Belonging to any
Those skilled in the art, in the range of not departing from technical scheme of the present invention, to the invention discloses technical solution and
Technology contents make the variations such as any type of equivalent replacement or modification, belong to the content without departing from technical scheme of the present invention, still
Within belonging to the scope of protection of the present invention.
Claims (6)
1. a kind of hybrid reactive power compensation device, which is characterized in that including：Static reactive generator, power capacitor and ICMS
Controller；The static reactive generator is communicated with the ICMS controllers；The power capacitor is controlled with the ICMS
Device processed is connected；
Wherein, the net in static reactive generator acquisition power grid presses load information, and sends out capacitor switching signal to described
ICMS controllers, and remaining reactive power in static reactive generator compensation network system；
The ICMS controllers are judged and are responded to the capacitor switching signal, convert the capacitor switching signal to electricity
Ordinary mail number acts on combination switch, for putting into and cutting off power capacitor.
2. hybrid reactive power compensation device as described in claim 1, which is characterized in that further include display, the display
485 communications are carried out with the ICMS controllers.
3. hybrid reactive power compensation device as claimed in claim 2, which is characterized in that further include DC power supply, the direct current
Power supply connects the ICMS controllers and display.
4. hybrid reactive power compensation device as described in claim 1, which is characterized in that the static reactive generator with it is described
ICMS controllers carry out 485 communications using Modbus agreements.
5. hybrid reactive power compensation device as described in claim 1, which is characterized in that the number of the power capacitor is
10-18.
6. hybrid reactive power compensation device as described in claim 1, which is characterized in that the ICMS controllers include parameter
Setting unit, for carrying out parameter setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710091193.XA CN108462186A (en) | 2017-02-20 | 2017-02-20 | Hybrid reactive power compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710091193.XA CN108462186A (en) | 2017-02-20 | 2017-02-20 | Hybrid reactive power compensation device |
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| Publication Number | Publication Date |
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| CN108462186A true CN108462186A (en) | 2018-08-28 |
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| CN201710091193.XA Pending CN108462186A (en) | 2017-02-20 | 2017-02-20 | Hybrid reactive power compensation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449950A (en) * | 2018-12-05 | 2019-03-08 | 国网北京市电力公司 | A kind of SVG and capacitor compensation cabinet and the control system and method for machine compensation |
| CN112526901A (en) * | 2020-11-19 | 2021-03-19 | 海尔海斯(西安)控制技术有限公司 | Acquisition and display method suitable for microcontroller internal signal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957155A (en) * | 2012-11-05 | 2013-03-06 | 如皋市图腾电力科技有限公司 | Control method for realizing reactive power compensation and harmonic suppression |
| CN206650435U (en) * | 2017-02-20 | 2017-11-17 | 上海华坤电器有限公司 | Hybrid reactive power compensation device |
-
2017
- 2017-02-20 CN CN201710091193.XA patent/CN108462186A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957155A (en) * | 2012-11-05 | 2013-03-06 | 如皋市图腾电力科技有限公司 | Control method for realizing reactive power compensation and harmonic suppression |
| CN206650435U (en) * | 2017-02-20 | 2017-11-17 | 上海华坤电器有限公司 | Hybrid reactive power compensation device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449950A (en) * | 2018-12-05 | 2019-03-08 | 国网北京市电力公司 | A kind of SVG and capacitor compensation cabinet and the control system and method for machine compensation |
| CN109449950B (en) * | 2018-12-05 | 2021-11-02 | 国网北京市电力公司 | SVG and capacitance compensation cabinet parallel compensation control system and method |
| CN112526901A (en) * | 2020-11-19 | 2021-03-19 | 海尔海斯(西安)控制技术有限公司 | Acquisition and display method suitable for microcontroller internal signal |
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