CN105281317A - Stepped active power balance and reactive power optimization voltage regulation treatment method of low-voltage transformer area - Google Patents
Stepped active power balance and reactive power optimization voltage regulation treatment method of low-voltage transformer area Download PDFInfo
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- 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
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- 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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- 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
- Y02E40/40—Arrangements for reducing harmonics
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- 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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
A stepped active power balance and reactive power optimization voltage regulation treatment method of a low-voltage transformer area is characterized in that: an exit end power quality treatment device is installed at the low voltage exit end of a transformer, and a branch power quality treatment device is installed at the front of the load of each branch. The user voltage is stabilized, and the branch line loss is reduced.
Description
Technical field
The invention belongs to power quality controlling field, low-voltage platform area, particularly relating to a kind of low-voltage platform area has a grade active balance reactive power compensation voltage-regulation administering method.
Background technology
Current low-voltage platform area, mainly refers to that 10KV/400V powers, the basic mode of connection: high pressure is delta connection, and low pressure is Y type, its quality of power supply, mainly contains three indexs: one is power supply reliability, and one is rate of qualified voltage, and one is voltage harmonic aberration rate.Power supply reliability describes the ratio that the time of powering accounts for total time, and by generating, transmission of electricity department determines, has nothing to do, therefore for low-voltage platform area, mainly contain rate of qualified voltage and voltage harmonic aberration rate with the load condition in platform district.And power supply unit is only examined the rate of qualified voltage of transformer low voltage output, not to non-terminal voltage examination, and user is in end, between transformer to user, there is a segment distance, be generally tens to hundreds of rice, a voltage difference is had from transformer outlet end to user side, namely there is a voltage step, as drop is excessive, a result can be caused: the voltage that power supply unit is powered is qualified, but user side voltage is underproof, cause the complaint of user.And voltage is defective, mainly user side brownout, therefore solves user side brownout problem, is to reduce the most basic reason complained.The object of the invention is just in order to solve the problem.
Summary of the invention
The object of patent of the present invention is that a kind of low-voltage platform area of design has a grade active balance reactive power compensation voltage-regulation administering method, to solve the problems such as low-voltage platform area user side brownout, the loss of platform district be excessive.
The object of the present invention is achieved like this: there is a grade active balance reactive power compensation voltage-regulation administering method a kind of low-voltage platform area, it is characterized by: at the port of export of transformer low voltage, installation outlet end power quality controlling device, described port of export power quality controlling device comprises port of export power quality controlling device controller, and the long-range and branch road short-range communication module be connected with port of export power quality controlling device controller is respectively set, a grade reactive power compensation is had to mend capacitor altogether, harmonic filter APF, there is a grade reactive power compensation A, B, C phase divides benefit capacitor, there is level meritorious compensation AB, BC, CA line line capacitance, branch road power quality controlling device is installed before branch circuit load, described branch road power quality controlling device comprises branch road power quality controlling device controller, and the branch road short-range communication module, branch road voltage regulator, the branch road that are connected with branch road power quality controlling device controller be respectively set have that capacitor is mended in grade reactive power compensation altogether, branch road has grade reactive power compensation A, B, C phase to divide to mend capacitor, branch road harmonic filter APF, branch road have that level is meritorious compensates AB, BC, CA line line capacitance, port of export power quality controlling device is by public telecommunication communication network or dedicated communications network, and realization is docked with data management system, by power-frequency communication of electric, carrier communication or short-distance wireless communication, realize the communication between the power quality controlling device being arranged on user side on branch road, and the active power balance regulating and controlling transformer load regulates or transformer load reactive power compensation or the filtering of transformer load harmonic current, branch road power quality controlling device is installed by power-frequency communication of electric or carrier communication or short-distance wireless communication before branch circuit load, realizes the communication between port of export power quality controlling device, and the active power balance regulating and controlling branch circuit load regulates or the reactive power compensation of branch circuit load or the filtering of branch circuit load harmonic current or branch circuit load boost in voltage are adjusted,
realizing active power has the method for grade balance adjustment to be,by the general principle of active balance, as larger than B phase in A phase active power, then between A, B phase, access electric capacity Cab, then can produce two effects, one is that A, B phase reactive power can increase simultaneously, and a part of active power of A phase can be transferred to B phase, and namely A phase active power reduces, B phase active power increases, and the rest may be inferred for other phase.
realizing reactive power has the method for grade balance adjustment to be,as three-phase lacks reactive power simultaneously, then there is grade electric capacity to cover row altogether and have a grade coarse adjustment, grade reactive power compensation A, B, C phase is had to divide benefit capacitor to have a grade fine tuning, to reach the best reactive balance effect that equipment allows, namely the direction being 1 towards power factor advances, running first carries out active power balance adjustment, and the reactive power compensation that reruns regulates;
the method realizing the filtering regulation and control of harmonic current is,detect the harmonic current of test point, produce reverse with harmonic current direction, that amplitude is identical electric current by APF, inject test point by inductance, offset with harmonic current, thus harmonic carcellation electric current.
multiple branch road transformer, a branch road power quality controlling device installed by each branch road.
branch road power quality controlling device infield at transformer outlet end to tributary user load branch place or load center of gravity place.
port of export power quality controlling device controller uses the JKWN/H type controller of Beihai Shenlan Science and Technology Development Co., Ltd..
branch road power quality controlling device controller uses the JKWN/H type controller of Beihai Shenlan Science and Technology Development Co., Ltd.
Port of export device is referred to as below port of export power quality controlling device.Branching unit is referred to as below branch road quality of power supply reason device.
The present invention of above measure is taked to have following benefit:
1, stabilize user's voltage and reduce branch road line loss.Because transformer outlet end has a segment distance usually to user load point, be generally tens meters to hundreds of rice, as the laod unbalance of POL or power factor low, then zero line can produce very large electric current, the voltage at POL place can reduce a lot, as carried out reactive power compensation and active load balance adjustment herein, then electric current on zero line can be reduced, thus reduce branch road line loss, the voltage of POL also can raise, and meets user's requirement.
2, increase branch voltage.If branch road is after reactive power compensation and active balance regulate, voltage still can not meet the demands, then can starting resistor boosting regulatory function, meets the requirement of user.
3, improve transformer service efficiency and safety, reduce transformer loss.Active power regulation balance and reactive power are after overcompensation, and the service efficiency of transformer is improved, and its fail safe have also been obtained guarantee, and after neutral line current reduces, transformer loss have also been obtained reduction.
4, the reactive power in platform district is backflowed very little.Because carrying out reactive power compensation at branch road, each branch circuit load point power factor reaches 1 substantially, and therefore whole district idle backflows very little, and line loss is reduced further.
5, the parameter of each branch circuit load point, except monitoring each parameter of transformer, directly can also be monitored, as voltage, electric current, power factor etc. in backstage.Relevant parameter, by power-frequency communication of electric or carrier communication or short-range wireless communication module, is sent port of export power quality controlling device, then send data management system by branch road power quality controlling device, and therefore the information understood of backstage is more comprehensive;
6, harmonic current filter effect is better.The harmonic current of load is limited in branch road, on transformer without impact.Because carrying out harmonic management at branch road, harmonic current is without transformer, and therefore branch road harmonic current does not affect transformer.Harmonic current as branch road can not all filterings, and port of export power quality controlling device can also continue filtering, ensure that the filtering of platform district harmonic current.
7, operation cost is low.Because branch road is completed by frequency communication or carrier communication, therefore only need a remote channel, just can realize total data passback data management system, operation cost is lower.
Port of export power quality control device medium-long range communication function, by public telecommunication communication network, as GPRS or CDMA or special electric power communication network, realize the communication with data management system, can require to use different communication protocol according to difference, as State Grid Corporation of China's company standard: Q/GDW376.1-2009 " power user power consumption information acquisition system communication protocol Part I: main website and acquisition terminal communication protocol " or China Nanfang Grid Co., Ltd company standard Q/CSG12101.8-2008 " marketing automation system loading office terminal, distribution transformer monitoring and metering terminal and low pressure meter-copy collector communication protocol ".Realize and the communication of data management system, data management system can the operation of the whole device in control and monitor console district in real time.
Port of export device passes through power-frequency communication of electric
,carrier communication or short-range wireless communication module, realize communication, the operation of controlling brancher device or the data of receiving branch device with branching unit.
Communicate with branch road power quality control device in port of export power quality control device and use power-frequency communication of electric, carrier communication or square distance wireless communication to realize.According to different communication channels, different communication protocol can be used, as MODBUS agreement or custom protocol.
Branching unit, by power-frequency communication of electric, carrier communication or short-range wireless communication module, realizes the communication with port of export device, realizes transfer of data each other.
realizing active power has the method for grade balance adjustment to be,by the general principle of active balance, as larger than B phase in A phase active power, then between A, B phase, access electric capacity Cab, then can produce two effects, one is that A, B phase reactive power can increase simultaneously, and a part of active power of A phase can be transferred to B phase, and namely A phase active power reduces, B phase active power increases, and the rest may be inferred for other phase.
realizing reactive power has the method for grade balance adjustment to be,as three-phase lacks reactive power simultaneously, then there is grade electric capacity to cover row altogether and have a grade coarse adjustment, grade reactive power compensation A, B, C phase is had to divide benefit capacitor to have a grade fine tuning, to reach the best reactive balance effect that equipment allows, namely the direction being 1 towards power factor advances, running first carries out active power balance adjustment, and the reactive power compensation that reruns regulates;
the method realizing the filtering regulation and control of harmonic current is,detect the harmonic current of test point, produce reverse with harmonic current direction, that amplitude is identical electric current by APF, inject test point by inductance, offset with harmonic current, thus harmonic carcellation electric current.
Load balance and reactive power compensation, filter function is processed in port of export device and branching unit, comprise active and passive part, active part includes active power filter APF, and APF is used for filtering harmonic wave, and capacity can be selected by being suitable for the principle of saving according to load capacity; Passive part includes grade reactive-load compensation capacitor and has a grade active power regulation capacitor, is completed by combination switch control capacitance switching.There is a grade reactive-load compensation capacitor to comprise reactive power compensation and mend capacitor and reactive power compensation A, B, C phase point benefit capacitor altogether; Grade active power regulation capacitor is had to be connected on the AB line line active balance control capacittance Cab of AB phase, be connected on the BC line line active balance control capacittance of BC phase
cbc, be connected on the CA line line active balance control capacittance Cca of CA phase.There are grade reactive compensation capacitor and active power balance control capacittance can select respective sets number and capacity according to amount of capacity.
Boost in voltage regulates.Only have branching unit just to install voltage regulator, consider actual conditions, general user's terminal voltage only has reduction, and does not raise phenomenon, therefore adopts boost in voltage to regulate.When output voltage is lower than setting voltage, voltage regulator puts into operation, and automatic adjustment height voltage is to set point.General voltage regulator has a pressure regulation value the highest, when reaching the highest pressure regulation value, and can not up regulation voltage again.
The present invention is described in further detail in conjunction with the accompanying drawings and embodiments more below.
Accompanying drawing explanation
Accompanying drawing 1 is that a kind of low-voltage platform area has a grade winding diagram for active balance reactive power compensation voltage-regulation administering method functional module.Wherein: be connected to a port of export power quality controlling device at the port of export, be connected to branch road power quality controlling device at each branch circuit load place, a branch road installs one.
Accompanying drawing 2 is port of export power quality controlling device functional-block diagrams of the present invention, describes the connecting relation of each function in square frame.
Accompanying drawing 3 is branch road power quality controlling device functional-block diagrams of the present invention, describes the connecting relation of each function in square frame.
Accompanying drawing 4 is the concrete device parameters used in the port of export power quality controlling device of patent Example of the present invention.
Accompanying drawing 5 is the concrete device parameters used in the branch road power quality controlling device of patent Example of the present invention.
The invention will be further described in conjunction with the accompanying drawings and embodiments more below.
Embodiment
Accompanying drawing 1 is that a kind of low-voltage platform area has a grade winding diagram for active balance reactive power compensation voltage-regulation administering method functional module.
In fig. 1, port of export device is arranged on the transformer low voltage port of export, the balance of primary responsibility Three-Phase Transformer active load, reactive power compensation and filtering etc., communicate with back-end data treatment system and to be realized by public telecommunication communication network or dedicated communications network, communicating with branching unit realizes with power-frequency communication of electric, carrier communication or square distance wireless communication.
Branching unit installation site is generally to starting to meet user or load center of gravity place at the transformer low voltage port of export, generally there is tens to hundreds of rice, the balance of three-phase active load, reactive power compensation, pressure regulation and filtering etc. after primary responsibility installation place, communicating with port of export device realizes with power-frequency communication of electric, carrier communication or square distance wireless communication.
Accompanying drawing 2 is port of export power quality controlling device functional-block diagrams of the present invention, describes the connecting relation of each function in square frame.Wherein port of export power quality controlling device controller controls long-range and branch road short-range communication module work, realizes and the communication of remote data management system and the communication of branching unit; Port of export power quality controlling device controller controls harmonic filter APF, realizes the filtering of transformer harmonic current; Port of export power quality controlling device controller controls have a grade reactive power compensation to mend capacitor altogether, realizes the switching that three-phase has grade electric capacity to mend altogether; Port of export power quality controlling device controller controls there is grade reactive power compensation A, B, C phase point benefit capacitor, realizes having grade reactive power compensation A, B, C phase to divide and mends capacitor switching respectively; Port of export power quality controlling device controller controls there is level meritorious compensation AB, BC, CA line line capacitance, and realizing active power has a grade balance adjustment.
Accompanying drawing 3 is branch road power quality controlling device functional-block diagrams of the present invention, describes the connecting relation of each function in square frame.Wherein branch road power quality controlling device controller controlling brancher short-range communication module, realize with port of export device communication; Branch road power quality controlling device controller controlling brancher harmonic filter APF, realizes the filtering of branch road harmonic current; Branch road power quality controlling device controller controlling brancher has a grade reactive power compensation to mend capacitor altogether, realizes the switching that branch road three-phase has grade electric capacity to mend altogether; Branch road power quality controlling device controller controlling brancher has grade reactive power compensation A, B, C phase point benefit capacitor, and realizing branch road has grade reactive power compensation A, B, C phase to divide benefit capacitor switching respectively; Branch road power quality controlling device controller controlling brancher has level meritorious compensation AB, BC, CA line line capacitance, and realizing branch road active power has a grade balance adjustment; Branch road power quality controlling device controller controlling brancher voltage regulator, when voltage is less than set point, starts voltage regulation function, improves output voltage.
Accompanying drawing 4 is the concrete device parameters used in the port of export power quality controlling device of patent Example of the present invention.The transformer that this example uses is 630KVA, be divided into two outlets, two branch roads are installed selected wire diameter and are all arranged by 315KVA, get identical value, use long-range and short range communication mode to be GPRS communication pattern and power-frequency communication of electric pattern respectively, realize and the communication of remote data management system and the communication of branching unit.
The communication protocol that patent Example of the present invention uses is State Grid Corporation of China's company standard: Q/GDW376.1-2009 " power user power consumption information acquisition system communication protocol Part I: main website and acquisition terminal communication protocol "; Communicate with branch road power quality controlling device in port of export power quality controlling device with power-frequency communication of electric, use communication protocol is MODBUS agreement.
Port of export power quality controlling device controller uses the JKWN/H type controller of Beihai Shenlan Science and Technology Development Co., Ltd., this controller carries GPRS and frequency communication module, realize and the communication of remote data management system and the communication of branching unit, it is interconnected that controller also realizes with miscellaneous equipment by 485 buses.Harmonic filter APF uses Beijing guide times APF that your Semiconductor Converting Technology Co., Ltd produces, and model is XDAPF3L-380/100, and every phase current 100A, realizes the filtering of harmonic current; Have a grade reactive power compensation to mend capacitor altogether, use the self-recovery low-voltage parallel capacitor that Guilin Power Capacitor Co., Ltd. produces, model is respectively BGMJ-0.45-60-3, BGMJ-0.45-40-3 and BGMJ-0.45-20-3.Power is 60,40 and 20kvar respectively, the combination switch that the combination switch connected uses Beihai Shenlan Science and Technology Development Co., Ltd. to produce, model is SLFK-H/ △ 380V80A, SLFK-H/ △ 380V55A, SLFK-H/ △ 380V55A respectively, jointly realizes the switching that three-phase has grade electric capacity to mend altogether, control has a grade reactive power compensation A, B, C phase divides benefit capacitor, use the self-recovery low-voltage parallel capacitor that Guilin Power Capacitor Co., Ltd. produces, model is respectively BGMJ-0.45-60-3YN, BGMJ-0.45-45-3YN, BGMJ-0.45-30-3YN, power is 3 × 20kvar respectively, 3 × 15kvar, 3 × 10kvar, the combination switch that the combination switch connected uses Beihai Shenlan Science and Technology Development Co., Ltd. to produce, model is SLFK-H/ △ 220V80A respectively, SLFK-H/ △ 220V80A, SLFK-H/ △ 220V55A, , common realization has a grade reactive power compensation A, B, C phase divides benefit capacitor switching respectively, there is level meritorious compensation AB, BC, CA line line capacitance, the self-healing low-voltage capacitor using Guilin Power Capacitor Co., Ltd. to produce, model is respectively BGMJ-0.45-90-3LL, BGMJ-0.45-90-3LL, BGMJ-0.45-60-3LL, power is 3 × 30kvar respectively, 3 × 30kvar, 3 × 20kvar, , the combination switch that the combination switch connected uses Beihai Shenlan Science and Technology Development Co., Ltd. to produce, model is SLFK-H/L380V80A respectively, SLFK-H/L380V80A, SLFK-H/L380V55A, jointly realize active power and have a grade balance adjustment.
Accompanying drawing 5 is the concrete device parameters used in the branch road power quality controlling device of patent Example of the present invention.This example has two branch roads, and two branch parameters are all identical.Use short range communication mode to be power-frequency communication of electric pattern, realize the communication with port of export device; Branch road power quality controlling device controller uses the JKWN/H type controller of Beihai Shenlan Science and Technology Development Co., Ltd., this controller carries frequency communication module, realize and the communication of port of export device, it is interconnected that controller also realizes with miscellaneous equipment by 485 buses.Branch road harmonic filter APF uses Beijing guide times APF that your Semiconductor Converting Technology Co., Ltd produces, and model is XDAPF3L-380/100, and every phase current 100A, realizes the filtering of harmonic current, a grade reactive power compensation is had to mend capacitor altogether, use the self-recovery low-voltage parallel capacitor that Guilin Power Capacitor Co., Ltd. produces, model is respectively BGMJ-0.45-40-3, BGMJ-0.45-30-3, BGMJ-0.45-20-3, power is 40kvar, 30kvar respectively, 20kvar, the combination switch that the combination switch connected uses Beihai Shenlan Science and Technology Development Co., Ltd. to produce, model is all SLFK-H/ △ 380V55A, jointly realizes the switching that three-phase has grade electric capacity to mend altogether, control has a grade reactive power compensation A, B, C phase divides benefit capacitor, use the self-recovery low-voltage parallel capacitor that Guilin Power Capacitor Co., Ltd. produces, control has a grade reactive power compensation A, B, C phase divides benefit capacitor, use the self-recovery low-voltage parallel capacitor that Guilin Power Capacitor Co., Ltd. produces, model is respectively BGMJ-0.45-60-3YN, BGMJ-0.45-45-3YN, BGMJ-0.45-30-3YN, power is 3 × 20kvar respectively, 3 × 15kvar, 3 × 10kvar, the combination switch that the combination switch connected uses Beihai Shenlan Science and Technology Development Co., Ltd. to produce, model is SLFK-H/ △ 220V80A respectively, SLFK-H/ △ 220V80A, SLFK-H/ △ 220V55A, , common realization has a grade reactive power compensation A, B, C phase divides benefit capacitor switching respectively, there is level meritorious compensation AB, BC, CA line line capacitance, the self-healing low-voltage capacitor using Guilin Power Capacitor Co., Ltd. to produce, model is respectively BGMJ-0.45-90-3LL, BGMJ-0.45-90-3LL, BGMJ-0.45-60-3LL, power is 3 × 30kvar respectively, 3 × 30kvar, 3 × 20kvar, the combination switch that the combination switch connected uses Beihai Shenlan Science and Technology Development Co., Ltd. to produce, model is SLFK-H/L380V80A respectively, SLFK-H/L380V80A, SLFK-H/L380V55A, jointly realize active power and have a grade balance adjustment.
Branch road voltage regulator, use the compensation voltage regulator that four directions, Shaanxi Huaneng Group Electric Appliance Equipment Co., Ltd produces, model is SBW-60(+10%), the highest pressure regulation value is+10%, i.e. 22V, and three-phase runs simultaneously, and every phase power 20KVA, gross power is 60KVA.
This example actual motion effectiveness comparison is desirable, first tributary user bifurcation is to the distance about 200 meters of transformer, second branch road distance about 180 meters, zero line resistance about 0.5 Europe/KM, therefore the first branch road zero line resistance about (200/1000) * 0.5=0.1 Europe, the second branch road zero line resistance about (180/1000) * 0.5=0.09 Europe.All illustrate from backstage and actual detection, transformer outlet terminal voltage is about 230V, first branching unit place voltage is between 194-220, second branching unit place voltage is between 195-223, transformer outlet end and branching unit place power factor are essentially about 0.96, detection accounts for Harmonic Current Distortion rate and is less than 15%, all meets user's requirement.As exited by whole device, then the first branch road and the second branching unit place voltage all have and are less than 165V phenomenon.Operational effect describes the validity of this method.
Claims (6)
1. there is a grade active balance reactive power compensation voltage-regulation administering method low-voltage platform area, it is characterized by: at the port of export of transformer low voltage, installation outlet end power quality controlling device, described port of export power quality controlling device comprises port of export power quality controlling device controller, and the long-range and branch road short-range communication module be connected with port of export power quality controlling device controller is respectively set, a grade reactive power compensation is had to mend capacitor altogether, harmonic filter APF, there is a grade reactive power compensation A, B, C phase divides benefit capacitor, there is level meritorious compensation AB, BC, CA line line capacitance, branch road power quality controlling device is installed before branch circuit load, described branch road power quality controlling device comprises branch road power quality controlling device controller, and the branch road short-range communication module, branch road voltage regulator, the branch road that are connected with branch road power quality controlling device controller be respectively set have that capacitor is mended in grade reactive power compensation altogether, branch road has grade reactive power compensation A, B, C phase to divide to mend capacitor, branch road harmonic filter APF, branch road have that level is meritorious compensates AB, BC, CA line line capacitance, port of export power quality controlling device is by public telecommunication communication network or dedicated communications network, and realization is docked with data management system, by power-frequency communication of electric, carrier communication or short-distance wireless communication, realize the communication between the power quality controlling device being arranged on user side on branch road, and the active power balance regulating and controlling transformer load regulates or transformer load reactive power compensation or the filtering of transformer load harmonic current, branch road power quality controlling device is installed by power-frequency communication of electric or carrier communication or short-distance wireless communication before branch circuit load, realizes the communication between port of export power quality controlling device, and the active power balance regulating and controlling branch circuit load regulates or the reactive power compensation of branch circuit load or the filtering of branch circuit load harmonic current or branch circuit load boost in voltage are adjusted,
realizing active power has the method for grade balance adjustment to be,by the general principle of active balance, as larger than B phase in A phase active power, then between A, B phase, access electric capacity Cab, then can produce two effects, one is that A, B phase reactive power can increase simultaneously, and a part of active power of A phase can be transferred to B phase, and namely A phase active power reduces, B phase active power increases, and the rest may be inferred for other phase.
2. as three-phase lacks reactive power simultaneously, then there is grade electric capacity to cover row altogether and have a grade coarse adjustment, grade reactive power compensation A, B, C phase is had to divide benefit capacitor to have a grade fine tuning, to reach the best reactive balance effect that equipment allows, namely the direction being 1 towards power factor advances, running first carries out active power balance adjustment, and the reactive power compensation that reruns regulates;
the method realizing the filtering regulation and control of harmonic current is,detect the harmonic current of test point, produce reverse with harmonic current direction, that amplitude is identical electric current by APF, inject test point by inductance, offset with harmonic current, thus harmonic carcellation electric current.
3. there is a grade active balance reactive power compensation voltage-regulation administering method low-voltage platform area according to claim 1, it is characterized by:
multiple branch road transformer, a branch road power quality controlling device installed by each branch road.
4. there is a grade active balance reactive power compensation voltage-regulation administering method low-voltage platform area according to claim 1, it is characterized by:
branch road power quality controlling device infield at transformer outlet end to tributary user load branch place or load center of gravity place.
5. there is a grade active balance reactive power compensation voltage-regulation administering method low-voltage platform area according to claim 1, it is characterized by:
port of export power quality controlling device controller uses the JKWN/H type controller of Beihai Shenlan Science and Technology Development Co., Ltd..
6. there is a grade active balance reactive power compensation voltage-regulation administering method low-voltage platform area according to claim 1, it is characterized by:
branch road power quality controlling device controller uses the JKWN/H type controller of Beihai Shenlan Science and Technology Development Co., Ltd..
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| CN108400602A (en) * | 2017-02-04 | 2018-08-14 | 昂顿科技（上海）有限公司 | Reactive compensation control system and control method |
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| CN101552491A (en) * | 2009-05-22 | 2009-10-07 | 山东鲁电电气集团有限公司 | Integrated energy saving system of power supply and distribution system |
| CN202930950U (en) * | 2012-04-18 | 2013-05-08 | 济南苏博电气有限公司 | Automatic balancing optimal active compensation device |
| CN103762609A (en) * | 2014-02-17 | 2014-04-30 | 北海市聚志电子科技有限公司 | Active power regulation and reactive power compensation control system of power distribution network remotely controlled through power frequency communication |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108400602A (en) * | 2017-02-04 | 2018-08-14 | 昂顿科技（上海）有限公司 | Reactive compensation control system and control method |
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