CN103023052A - Intelligent quick dynamic hybrid reactive compensation system - Google Patents
Intelligent quick dynamic hybrid reactive compensation system Download PDFInfo
- Publication number
- CN103023052A CN103023052A CN2012105813659A CN201210581365A CN103023052A CN 103023052 A CN103023052 A CN 103023052A CN 2012105813659 A CN2012105813659 A CN 2012105813659A CN 201210581365 A CN201210581365 A CN 201210581365A CN 103023052 A CN103023052 A CN 103023052A
- Authority
- CN
- China
- Prior art keywords
- unit
- module
- reactive power
- master control
- power compensation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses an intelligent quick dynamic hybrid reactive compensation system. The intelligent quick dynamic hybrid reactive compensation system comprises a sampling unit, a knife-switch unit, a general-control unit, a switching switch unit and reactive compensation units, wherein the sampling unit is used for sampling current signals and voltage signals of a power line, the knife switch unit is used for connecting the reactive compensation units into the power line, the general control unit calculates required reactive compensation quantity of the power line according to the current signals and the voltage signals acquired by the sampling unit from the power line, and controls the switching switch unit to get through the corresponding reactive compensation units to reactively compensate. In the intelligent quick dynamic hybrid reactive compensation system, the required reactive compensation quantity is determined according to practical conditions of the power line, and can adapt to places where reactive power changes quickly by sequentially adopting three-phase compensation and single-phase compensation, unbalanced three-phase degree and power factors are improved, and the service life of electric equipment is prolonged.
Description
Technical field
The present invention relates to a kind of reactive compensation system, relate in particular to the fast dynamic mixed type reactive compensation system of a kind of intelligence.
Background technology
In electric power system, reactive power is crossed conference directly affects power factor (PF), thus the waste electric energy.Therefore, in electric power system, all be provided with reactive power compensator.
Existing reactive power compensator is to take the single-phase voltage signal, and as fling-cut switch, the control capacitor group drops into simultaneously or withdraws from A.C. contactor.This kind control mode has a lot of shortcomings, for example: owing to taking the single-phase voltage signal, carry out reactive power compensation not accurate enough.Especially when three-phase imbalance, if judge whether switching of capacitance group according to certain phase signals, can cause overcompensation or the undercompensation of certain phase; And, because the capacity of each electric capacity equates in the capacitance group, can not select suitable electric capacity to carry out reactive power compensation; In addition, owing to can't eliminate mains by harmonics, also be easy to shorten the life-span of capacitance group.
Summary of the invention
The present invention is directed to the drawback of prior art, provide a kind of intelligence fast dynamic mixed type reactive compensation system.
The fast dynamic mixed type reactive compensation system of intelligence of the present invention, comprise the sampling unit that current signal and the voltage signal of power circuit are sampled and the chopper switch unit that the reactive power compensation unit is accessed power circuit, also comprise Master Control Unit, fling-cut switch unit and reactive power compensation unit;
Wherein, current signal and the required reactive power compensation amount of voltage signal computing electric line of the power circuit that described Master Control Unit obtains according to sampling unit, and control fling-cut switch unit is connected corresponding reactive power compensation unit and is carried out reactive power compensation.
In the fast dynamic mixed type reactive compensation system of intelligence of the present invention, described reactive power compensation unit is the three-phase compensating unit;
When the voltage signal that obtains according to sampling unit when Master Control Unit judges that power circuit is overvoltage, the reactive power compensation amount that computing electric line is required, and control fling-cut switch unit cuts off corresponding three-phase compensating unit;
When the voltage signal that obtains according to sampling unit when Master Control Unit judges that power circuit is under-voltage, the reactive power compensation amount that computing electric line is required, and corresponding three-phase compensating unit is connected in control fling-cut switch unit.
In the fast dynamic mixed type reactive compensation system of intelligence of the present invention, described reactive power compensation unit also comprises single-phase compensating unit;
When the current signal that obtains according to sampling unit when Master Control Unit judges that power circuit is overcurrent, the reactive power compensation amount that computing electric line is required, and control fling-cut switch unit cuts off corresponding single-phase compensating unit;
When the current signal that obtains according to sampling unit when Master Control Unit judges that power circuit is undercurrent, the reactive power compensation amount that computing electric line is required, and corresponding single-phase compensating unit is connected in control fling-cut switch unit.
In the fast dynamic mixed type reactive compensation system of intelligence of the present invention, described Master Control Unit comprises analog-to-digital converting module, data processing module, data memory module and data input/output interface module;
Wherein, described data input/output interface module is as the interface of data turnover Master Control Unit;
Described analog-to-digital converting module is used for realizing that analog signal is to the conversion of digital signal, the input of this analog/digital signal conversion module is connected with data input/output interface module, and the output of this analog/digital signal conversion module is connected with data processing module; Its analog current signal and voltage signal with the access of data input/output interface module is converted to digital signal, and transfers to data processing module;
Described data processing module is connected with data memory module, analog-to-digital converting module and data input/output interface module respectively; This data processing module reading out data and data processed result is stored in the data memory module in data memory module;
Described data processing module calculates according to current signal and the voltage signal of initialize program to access, thereby determines the required reactive power compensation amount of current power circuit, and and then determines the combination of input reactive power compensation unit according to initialize program.
In the fast dynamic mixed type reactive compensation system of intelligence of the present invention, described fling-cut switch unit comprises command reception module and action executing module; Wherein, described command reception module is connected with Master Control Unit, and the input of reception Master Control Unit/excision instruction; Described action executing module is then selected turn on-switch loop or cut-off switch loop according to the input that receives/excision instruction.
In the fast dynamic mixed type reactive compensation system of intelligence of the present invention, described sampling unit comprises current sampling device and voltage sampling device, is respectively applied to realize obtaining of current signal and voltage signal.
In the fast dynamic mixed type reactive compensation system of intelligence of the present invention, the reactive power compensation amount required according to the actual conditions calculative determination of power circuit, and take successively the mode of three-phase compensation and single-phase compensation, can adapt to the fast-changing occasion of reactive power, improve the three-phase imbalance degree, reduce line energy loss, improve power factor (PF), stablize line voltage distribution, absorb mains by harmonics, improve the power supply unit power supply capacity, prolong the power consumption equipment life-span, reduce the demand charge expenditure.
Description of drawings
Fig. 1 is the structural representation of the fast dynamic mixed type reactive compensation system of intelligence of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing, can implement according to this with reference to the specification literal to make those skilled in the art.
As shown in Figure 1, the fast dynamic mixed type reactive compensation system of intelligence of the present invention, comprise the sampling unit that current signal and the voltage signal of power circuit are sampled and the chopper switch unit that the reactive power compensation unit is accessed power circuit, also comprise Master Control Unit, fling-cut switch unit and reactive power compensation unit.
Wherein, described sampling unit comprises current sampling device and voltage sampling device, is respectively applied to realize obtaining of current signal and voltage signal.Described current sampling device can utilize current transformer and realize, described voltage sampling device then can be by recording to the direct line of power circuit or to the direct line of chopper switch.Current signal and voltage signal that described sampling unit obtains are linked into Master Control Unit, carry out follow-up data by Master Control Unit and process.
Described chopper switch unit is arranged between power circuit and the reactive power compensation unit, and it is used for reactive power compensation unit access power circuit or cuts off the reactive power compensation unit.During concrete the application, can total chopper switch be set and air switch is realized by classification.
Current signal and the required reactive power compensation amount of voltage signal computing electric line of the power circuit that described Master Control Unit obtains according to sampling unit, and control fling-cut switch unit is connected corresponding reactive power compensation unit and is carried out reactive power compensation.
Particularly, as shown in Figure 1, described Master Control Unit comprises analog-to-digital converting module, data processing module, data memory module and data input/output interface module.
Wherein, described data input/output interface module is born the function served as bridge that information access and information derive as the interface of data turnover Master Control Unit.
Described analog-to-digital converting module is used for then realizing that analog signal is to the conversion of digital signal, the input of this analog/digital signal conversion module is connected with data input/output interface module, and the output of this analog/digital signal conversion module is connected with data processing module; Its analog current signal and voltage signal with the access of data input/output interface module is converted to digital signal, and transfers to data processing module.
Described data processing module is as the nucleus module of Master Control Unit, and it is connected with data memory module, analog-to-digital converting module and data input/output interface module respectively; On the one hand, data processing module is reading out data (comprising the calculation procedure that presets) in data memory module, and on the other hand, data processing module can be stored into data processed result in the data memory module.Among the present invention, described data processing module is according to the algorithm in the initialize program, current signal and the voltage signal of the figure pattern of access calculated, thereby determine the required reactive power compensation amount of current power circuit.
Further, described data processing module also can determine which kind of compound mode to drop into the reactive power compensation unit with according to the required reactive power compensation amount of current calculating.Because, in described data memory module, having preset different reactive power compensation unit input strategies, these strategies are one-to-one relationship with the combination of the reactive power compensation unit of the required input of system.After data processing module calculates current required reactive power compensation amount, namely can search this required corresponding strategy of reactive power compensation amount, and then drop into the corresponding reactive power compensation unit combination of this strategy.
Among the present invention, described reactive power compensation unit can specifically comprise three-phase compensating unit and single-phase compensating unit.Drop into one by one by the classification to three-phase compensating unit and single-phase compensating unit, adapt to the quick variation of reactive power, realize local compensation.
When the voltage signal that obtains according to sampling unit when Master Control Unit judges that power circuit is overvoltage, the reactive power compensation amount that computing electric line is required, and control fling-cut switch unit cuts off corresponding three-phase compensating unit;
When the voltage signal that obtains according to sampling unit when Master Control Unit judges that power circuit is under-voltage, the reactive power compensation amount that computing electric line is required, and corresponding three-phase compensating unit is connected in control fling-cut switch unit.
Further, when the current signal that obtains according to sampling unit when Master Control Unit judges that power circuit is overcurrent, the reactive power compensation amount that computing electric line is required, and control fling-cut switch unit cuts off corresponding single-phase compensating unit;
When the current signal that obtains according to sampling unit when Master Control Unit judges that power circuit is undercurrent, the reactive power compensation amount that computing electric line is required, and corresponding single-phase compensating unit is connected in control fling-cut switch unit.
The present invention, described fling-cut switch unit comprises command reception module and action executing module, wherein, described command reception module is connected with Master Control Unit, and the input of reception Master Control Unit/excision instruction; Described action executing module is then selected turn on-switch loop or cut-off switch loop, is namely dropped into the reactive power compensation unit or withdraw from the reactive power compensation unit according to the input that receives/excision instruction.
In the fast dynamic mixed type reactive compensation system of intelligence of the present invention, the reactive power compensation amount required according to the actual conditions calculative determination of power circuit, and take successively the mode of three-phase compensation and single-phase compensation, can adapt to the fast-changing occasion of reactive power, improve the three-phase imbalance degree, reduce line energy loss, improve power factor (PF), stablize line voltage distribution, absorb mains by harmonics, improve the power supply unit power supply capacity, prolong the power consumption equipment life-span, reduce the demand charge expenditure.
Although embodiment of the present invention are open as above, but it is not restricted to listed utilization in specification and the execution mode, it can be applied to various suitable the field of the invention fully, for those skilled in the art, can easily realize other modification, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend of describing.
Claims (6)
1. the quick dynamic mixed type reactive compensation system of an intelligence, comprise the sampling unit that current signal and the voltage signal of power circuit are sampled and the chopper switch unit that the reactive power compensation unit is accessed power circuit, it is characterized in that, also comprise Master Control Unit, fling-cut switch unit and reactive power compensation unit;
Wherein, current signal and the required reactive power compensation amount of voltage signal computing electric line of the power circuit that described Master Control Unit obtains according to sampling unit, and control fling-cut switch unit is connected corresponding reactive power compensation unit and is carried out reactive power compensation.
2. the fast dynamic mixed type reactive compensation system of intelligence as claimed in claim 1 is characterized in that, described reactive power compensation unit is the three-phase compensating unit;
When the voltage signal that obtains according to sampling unit when Master Control Unit judges that power circuit is overvoltage, the reactive power compensation amount that computing electric line is required, and control fling-cut switch unit cuts off corresponding three-phase compensating unit;
When the voltage signal that obtains according to sampling unit when Master Control Unit judges that power circuit is under-voltage, the reactive power compensation amount that computing electric line is required, and corresponding three-phase compensating unit is connected in control fling-cut switch unit.
3. the fast dynamic mixed type reactive compensation system of intelligence as claimed in claim 2 is characterized in that, described reactive power compensation unit also comprises single-phase compensating unit;
When the current signal that obtains according to sampling unit when Master Control Unit judges that power circuit is overcurrent, the reactive power compensation amount that computing electric line is required, and control fling-cut switch unit cuts off corresponding single-phase compensating unit;
When the current signal that obtains according to sampling unit when Master Control Unit judges that power circuit is undercurrent, the reactive power compensation amount that computing electric line is required, and corresponding single-phase compensating unit is connected in control fling-cut switch unit.
4. the fast dynamic mixed type reactive compensation system of intelligence as claimed in claim 1 is characterized in that, described Master Control Unit comprises analog-to-digital converting module, data processing module, data memory module and data input/output interface module;
Wherein, described data input/output interface module is as the interface of data turnover Master Control Unit;
Described analog-to-digital converting module is used for realizing that analog signal is to the conversion of digital signal, the input of this analog/digital signal conversion module is connected with data input/output interface module, and the output of this analog/digital signal conversion module is connected with data processing module; Its analog current signal and voltage signal with the access of data input/output interface module is converted to digital signal, and transfers to data processing module;
Described data processing module is connected with data memory module, analog-to-digital converting module and data input/output interface module respectively; This data processing module reading out data and data processed result is stored in the data memory module in data memory module;
Described data processing module calculates according to current signal and the voltage signal of initialize program to access, thereby determines the required reactive power compensation amount of current power circuit, and and then determines the combination of input reactive power compensation unit according to initialize program.
5. the fast dynamic mixed type reactive compensation system of intelligence as claimed in claim 1 is characterized in that, described fling-cut switch unit comprises command reception module and action executing module; Wherein, described command reception module is connected with Master Control Unit, and the input of reception Master Control Unit/excision instruction; Described action executing module is then selected turn on-switch loop or cut-off switch loop according to the input that receives/excision instruction.
6. the fast dynamic mixed type reactive compensation system of intelligence as claimed in claim 1 is characterized in that, described sampling unit comprises current sampling device and voltage sampling device, is respectively applied to realize obtaining of current signal and voltage signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210581365.9A CN103023052B (en) | 2012-12-27 | 2012-12-27 | A kind of intelligent quick dynamic hybrid reactive compensation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210581365.9A CN103023052B (en) | 2012-12-27 | 2012-12-27 | A kind of intelligent quick dynamic hybrid reactive compensation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103023052A true CN103023052A (en) | 2013-04-03 |
| CN103023052B CN103023052B (en) | 2015-08-26 |
Family
ID=47971317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210581365.9A Expired - Fee Related CN103023052B (en) | 2012-12-27 | 2012-12-27 | A kind of intelligent quick dynamic hybrid reactive compensation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103023052B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103227451A (en) * | 2013-04-25 | 2013-07-31 | 国家电网公司 | Undervoltage and overvoltage detection and protection method of network voltage, and detection and protection device of method |
| CN106253309A (en) * | 2016-08-31 | 2016-12-21 | 湖北华辰凯龙电力有限公司 | A kind of integrate active dynamic filter compensate, the power factor controller of power factor regulation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157947A (en) * | 2010-12-10 | 2011-08-17 | 广东电网公司佛山供电局 | Application of capacitor integrated online monitoring technology in high-voltage reactive power compensation device |
| 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 |
| CN202094634U (en) * | 2010-10-26 | 2011-12-28 | 中国电力科学研究院 | Dynamic reactive power compensation device |
-
2012
- 2012-12-27 CN CN201210581365.9A patent/CN103023052B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202094634U (en) * | 2010-10-26 | 2011-12-28 | 中国电力科学研究院 | Dynamic reactive power compensation device |
| CN102157947A (en) * | 2010-12-10 | 2011-08-17 | 广东电网公司佛山供电局 | Application of capacitor integrated online monitoring technology in high-voltage reactive power compensation device |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103227451A (en) * | 2013-04-25 | 2013-07-31 | 国家电网公司 | Undervoltage and overvoltage detection and protection method of network voltage, and detection and protection device of method |
| CN103227451B (en) * | 2013-04-25 | 2016-06-29 | 国家电网公司 | A kind of line voltage owes overvoltage detection protecting method and device |
| CN106253309A (en) * | 2016-08-31 | 2016-12-21 | 湖北华辰凯龙电力有限公司 | A kind of integrate active dynamic filter compensate, the power factor controller of power factor regulation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103023052B (en) | 2015-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107863778B (en) | Commutation energy storage type three-phase load unbalance management device and method | |
| CN102055198B (en) | Reactive compensation intelligent monitoring management system | |
| CN203690930U (en) | Hybrid reactive compensation control system | |
| CN201805231U (en) | Dynamic reactive power compensation device | |
| CN109378849B (en) | Energy storage device for low-voltage distribution transformer area and control method | |
| CN105790290A (en) | Unbalance adjustment system for low-voltage station area distribution transformer secondary side | |
| CN103501017A (en) | Microgrid stabilization controller | |
| CN102738764A (en) | Electronic controller for breaker | |
| CN103023052B (en) | A kind of intelligent quick dynamic hybrid reactive compensation system | |
| CN102664400A (en) | Monitoring method for electric energy quality | |
| CN103715699B (en) | A kind of low-voltage distribution network reactive power compensation system device and compensation method | |
| CN102904260A (en) | Low-voltage capacitor equipment, reactive compensation control system and reactive compensation control method | |
| CN205104912U (en) | Novel lossless balanced load of centralized three -phase device | |
| CN102545232A (en) | Distributed type intelligent reactive compensation box | |
| CN208623392U (en) | A kind of complex electric energy comprehensive quality control device | |
| CN201766342U (en) | Passive intelligent demarcation load switch controller | |
| CN201887483U (en) | Reactive compensation intelligent monitoring manager | |
| CN201838536U (en) | Self-power supply type digital relay | |
| CN101340097A (en) | Intelligent modularized reactive compensator | |
| CN203747426U (en) | Low-voltage dynamic filtering reactive compensation device | |
| CN203747427U (en) | High calculating ability intelligent capacitor | |
| CN210201490U (en) | Based on unbalanced three-phase commutation device of low voltage distribution network | |
| CN204205614U (en) | Three-phase phase-change switch device | |
| CN203117343U (en) | Microgrid short circuit fault diagnosis system based on intelligent electric meters | |
| CN203104323U (en) | Direct current-to-alternative current (DC-to-AC) power conversion system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20161227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |