CN104734161B - Variable series-connection reactance dynamic voltage-adjustment reactive compensation method and device - Google Patents
Variable series-connection reactance dynamic voltage-adjustment reactive compensation method and device Download PDFInfo
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- CN104734161B CN104734161B CN201510145356.9A CN201510145356A CN104734161B CN 104734161 B CN104734161 B CN 104734161B CN 201510145356 A CN201510145356 A CN 201510145356A CN 104734161 B CN104734161 B CN 104734161B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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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
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- Y02E40/30—Reactive power compensation
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Abstract
The invention relates to a dynamic voltage-adjustment reactive compensation technology, in particular to a variable series-connection reactance dynamic voltage-adjustment reactive compensation method and device. The variable series-connection reactance dynamic voltage-adjustment reactive compensation method includes the steps of setting a series-parallel connection assembly for a variable electric reactor and a capacitor and connecting the series-parallel connection assembly into a load side inlet; detecting the voltage offset and operation conditions of the outlet end and the power factor of the inlet end of the assembly in real time; dynamically controlling the parameters of the variable electric reactor and the capacitor in series-parallel connection according to the voltage offset and operation conditions of the load side and the power factor on a power grid side, and enabling the voltage on the load side to reach the standard and the power factor on the power grid side to be improved. The variable series-connection reactance dynamic voltage-adjustment reactive compensation device comprises a series-parallel connection unit for the variable electric reactor and the capacitor, a load voltage offset and power grid reactive vacancy detection unit, a dynamic voltage-adjustment and reactive power compensation control unit, a dynamic voltage-adjustment and reactive power compensation execution unit and an element and device protecting unit. The variable series-connection reactance dynamic voltage-adjustment reactive compensation method and device can be used for controlling low voltage, improving electricity quality, reducing losses, saving energy and improving power supply reliability and electricity utilization rate, and have the advantages of being safe, being environmentally friendly, saving energy and increasing the effect.
Description
Technical field
The present invention relates to a kind of dynamic voltage adjustment reactive power compensation technology, more particularly to a kind of variable in-line reactance dynamic voltage adjustment without
Work(compensation method and its device.
Background technology
With the quickening and the increasing of national energy-saving policy dynamics of town and country construction paces, living standard of urban and rural population level is shown
Write and improve, power load rapid growth, the construction of town and country power distribution network lags behind the growth of electricity needs, causes town and country power distribution network to be deposited
Power supply quality decline, not high power supply reliability, faults frequent, line loss be high, local power scarce capacity, the long line in part
Road end station area voltage as little as electrical equipment cisco unity malfunction, part transformer station night 10kV busbar voltage is higher, or even sternly
Weight is exceeded, the problems such as the safe operation of Crisis Grid and controller switching equipment.The presence of these problems so that the serious ground of variation
Area, electrical equipment cisco unity malfunction has a strong impact on normal work and the life of urban and rural residents, or even causes " collapse of voltage ",
Threaten the stability of power system.
In order to administer harmful effect of the low-voltage problem to electrical network and electrical equipment, China has formulated corresponding country's mark
It is accurate：《Zero transition procedue low voltage dynamic reactive power compensation device》GB/T25839-2010.
The low-voltage Treatment process for generally adopting both at home and abroad has two classes with device：One class is consolidating based on reactance voltage-regulation principle
Determine reactance voltage-regulating technique and variable reactance voltage-regulating technique, another kind of is based on the fixed capacity pressure regulation skill of reactive-load compensation voltage-regulation principle
Art and variable capacitance voltage-regulating technique.But there are various deficiencies in any of the above technology：
The boosting of series connection constant reactance technology not substantially, and cannot accomplish dynamic voltage adjustment, and power factor cannot be guaranteed.
Series varactor technology can realize pressure regulation, but cannot guarantee power factor satisfaction requirement while pressure regulation.
Fixed capacity technology in parallel has stronger reactive power compensation planning, raises electricity with certain under certain conditions
The function of pressure, but adjust the narrow range of voltage, it is impossible to reduce voltage.
At present, in order to be directed to the problem that distribution net platform region low-voltage is administered, in the urgent need to one kind can reach tune on market
Pressure effect, power factor command can be met again, the invention provides variable in-line reactor dynamic voltage adjustment reactive-load compensation method and
Device.
The content of the invention
The present invention mainly solves the technical problem existing for prior art；Variable in-line reactor is used there is provided a kind of
Coordinate the principle for realizing dynamic voltage adjustment reactive-load compensation with variable parallel capacitor bank, it is tight with no-power vacancy problem to low-voltage problem
The load side of weight carries out effective dynamic voltage adjustment and reactive-load compensation, makes load side voltage indexes up to standard and grid side power factor symbol
The requirement of national quality of voltage and power factor standard is closed, furthermore, it is possible to improve power supply reliability and efficiency, is had
There are the variable in-line reactance dynamic voltage adjustment reactive-load compensation method and its device of the characteristics of safe and environment-friendly, energy-conservation and potentiation.
What the above-mentioned technical problem of the present invention was mainly addressed by following technical proposals：
A kind of variable in-line reactance dynamic voltage adjustment reactive-load compensation method, it is characterised in that：Variable reactor and electric capacity are set
The real-time detection unit of the power factor of device assembly, the voltage deviation at module outlet end, operating condition and arrival end and can
Become the parameter control unit of reactor and capacitor connection in series-parallel component, between load arrival end and electrical network variable reactor is accessed
And capacitor assembly, by the voltage deviation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end, operation
The power factor of operating mode and arrival end, changes and adjusts variable reactor and capacitor connection in series-parallel compound mode and parameter, realizes
Load side voltage indexes are up to standard and grid side power factor is improved；
Specifically include following steps：
Step 1, setting variable reactor and capacitor connection in series-parallel component, constitute dynamic voltage adjustment reactive-load compensation major loop；
Step 2, variable reactor and capacitor connection in series-parallel component are accessed between load arrival end and electrical network, form dynamic
Pressure regulation candidate compensation buses, concrete grammar is：Three phases changeable reactance device series component is by three separate, counter element parameters
Identical variable reactor series component is constituted；
One end of three phases changeable reactance device series component respectively with a certain phase (A, B, C) of load side (be connected, the other end
Respectively the corresponding phase (A, B, C) of grid side is connected)；
Three-phase capacitor parallel component is by three separate, counter element parameter identical capacitor parallel component groups
Into using star-star connection connection；
Three-phase capacitor parallel component one end difference load side a certain phase (A, B, C) be connected, the other end with it is in parallel
Neutral point N of component star-star connection links together；For three-phase four-wire system, neutral point N needs the neutrality for accessing electrical network
Point connecting line；
Voltage deviation, the operating condition of step 3, real-time detection variable reactor and capacitor connection in series-parallel module outlet end
It is that load side voltage and grid side power factor regulation provide control information with the power factor of arrival end, concrete mode is：
The voltage deviation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end, operating condition and entrance
The power factor at end, is that load side voltage and grid side power factor regulation provide control information：
On the basis of step 2, the variation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end
The power factor of amount, operating condition and arrival end, its main contents include：Three-phase voltage, electric current, active power, reactive power
And power factor；
The voltage deviation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end, operating condition and entrance
The precision and response time of the power factor at end meets basic demand and the technical standard of electric energy quality monitoring；
The voltage deviation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end, operating condition and entrance
The quality of power supply and operating condition situation of the power factor at end, true reflection load side and grid side, while embodying dynamic voltage adjustment
The effect of reactive-load compensation
Step 4, the voltage deviation according to detection, operating condition and power factor, determine dynamic voltage adjustment and reactive-load compensation
Scope, concrete grammar is：On the basis of step 2 and step 3, voltage deviation, operating condition according to module outlet end and
The power factor of arrival end, determines dynamic voltage adjustment and reactive-load compensation scope；
The principle for determining dynamic voltage adjustment and reactive-load compensation scope is calculated according to circuit and systematic parameter and measured data
Go out under the conditions of meeting that variation is qualified and power factor is as up to standard as possible, the change model of variable reactor and capacitor parameters
Enclose；
Step 5, according to for electricity consumption operating mode, the parameter of dynamic adjustment connection in series-parallel variable reactor and capacitor realizes load
Side voltage indexes are up to standard and grid side power factor is improved, and concrete grammar is：On the basis of step 2, step 3 and step 4, root
According to the power factor of the voltage deviation at module outlet end, operating condition and arrival end, dynamic adjustment connection in series-parallel variable reactor
With the parameter and structure of capacitor, i.e.,：When low voltage, increase the reactance value of reactor, increase reactive compensation capacity, suitably
Overcompensation, so as to raise load terminal voltage；When voltage is higher, the reactance value of appropriate adjustment reactor reduces reactive-load compensation and holds
Amount, so as to reduce load terminal voltage；.
In a kind of above-mentioned variable in-line reactance dynamic voltage adjustment reactive-load compensation method, step one, arrange variable reactor and
Capacitor connection in series-parallel component, constitutes dynamic voltage adjustment reactive-load compensation major loop：
Variable reactor and capacitor assembly are made up of variable reactor series component and capacitor parallel component；
Variable reactor series component is in series by the different reactor of multiple parameters, with shnt capacitor assemble conjunction and
Regulating circuit is formed, the voltage of load side is adjusted；
The parameter of the reactor of n different series reactance branch roads should meet the reactance value of counter element and close in 2 n-1 powers
System, i.e.,：Series reactance branch road 1,2,3 ..., the induction reactance parameter of the reactor of n is respectively：jXL1, j2XL1, j4XL1..., j2n- 1XL1, n=1,2,3 ..., NL；Wherein, n is natural number；
Variable condenser parallel component by the different capacitor of multiple parameters be formed in parallel voltage and power factor adjustment electricity
Road, by the capacitor value of reactive power capacity configuration capacitor；
Shnt capacitor branch road be 1,2,3 ..., NC, the capacitive reactive power capacity of n-th shnt capacitor is 2 n-
1 power, i.e.,：QC1、2QC1、4QC1、8QC1、...、2n-1QC1, n=1,2,3 ..., NC；
Current-limiting reactor branch road 1,2,3 ..., NLWith shnt capacitor branch road 1,2,3 ..., NCCombination should meet load side
Voltage indexes the requirement up to standard and raising of grid side power factor.
A kind of new dynamic voltage adjustment reactive-load compensation topology, it is characterised in that including a variable reactor and capacitor
Connection in series-parallel unit；The variable reactor and capacitor connection in series-parallel unit series component end connection electrical network, variable reactor and
Capacitor connection in series-parallel unit series component and parallel component common port connected load side；Load voltage offsets and grid no-power vacancy
Two groups of inputs of detector unit are respectively connected to the load side of series component end grid side and series component and parallel component common port；
Load voltage offsets and the output connection dynamic voltage adjustment and the control of reactive power compensating unit of grid no-power vacancy detector unit are input into；It is dynamic
The output connection dynamic voltage adjustment and the input of reactive-load compensation performance element of state pressure regulation and the control of reactive power compensating unit；Dynamic voltage adjustment and
The output connection variable reactor of reactive-load compensation performance element and the input of capacitor connection in series-parallel unit；Device and unit protection list
Unit output connection variable reactor and capacitor connection in series-parallel unit input and dynamic voltage adjustment and reactive-load compensation performance element it is defeated
Enter；
Wherein, the variable reactor and capacitor assembly include equivalent variable reactor series component and equivalent condenser
Parallel component；The equivalent variable reactor assemblies include n Reactor Branch series connection；The equivalent variable reactor series connection group
Part one end gets access to grid equiva lent impedance Rs, another termination load ZL；
The equivalent condenser parallel component includes NCIndividual capacitor branches are in parallel, the equivalent condenser parallel component one end
Meet load source ZL, the other end gets access to grid the neutral conductor of equivalent voltage source.
In above-mentioned a kind of new dynamic voltage adjustment reactive-load compensation topology, in the equivalent variable reactor assemblies, n-th
The reactance parameter of the reactor of Reactor Branch is 2 n-1 powers, i.e.,：jXL1,j2XL1,j4XL1..., j2n-1XL1, n=1,
2、3、...、NL, by thyristor switch K11, K12..., K1N carries out parallel combination, and forming regulation the equivalent of load side voltage can
Become reactor series component, realize the dynamic regulation to load side voltage；
In the equivalent condenser parallel component, the capacitive reactive power capacity of n-th shnt capacitor branch road is 2 n-
1 power, i.e.,：-jQC1、-j2QC1、-j4QC1、-j8QC1、...、-j2n-1QC1, n=1,2,3 ..., NC；
Each shnt capacitor branch road of the equivalent condenser parallel component switchs K by series thyristor respectively21,
K22..., K2nParallel combination is carried out to shnt capacitor, is formed corresponding with load side rated voltage and grid side power factor
Pressure regulation reactive-load compensation variable reactor and capacitor parallel component；
The thyristor switch is made up of a pair just antiparallel two triode thyristors.
In above-mentioned a kind of new dynamic voltage adjustment reactive-load compensation topology, load voltage skew and grid no-power vacancy detection
Unit includes two groups of voltage transformer V1And V2, two groups of current transformer I1And I2；For gathering variable reactor and capacitor string
The three-phase voltage and three-phase current of parallel units grid side and load side.
In above-mentioned a kind of new dynamic voltage adjustment reactive-load compensation topology, the dynamic voltage adjustment and reactive-load compensation performance element
Including thyristor switch K11, K12..., K1n, and thyristor switch K21, K22..., K2n；Variable reactor series component
Performance element is by each reactor correspondence successively parallel thyristors switch K11, K12..., K1n, when the switch is closed, corresponding electricity
Anti- device is exited；When the switches are opened, corresponding reactor input；
The performance element of variable condenser parallel component is sequentially connected in series thyristor switch K by each capacitor correspondence21,
K22..., K2n, when the switch is closed, corresponding capacitor input；When the switches are opened, corresponding capacitor is exited.
In above-mentioned a kind of new dynamic voltage adjustment reactive-load compensation topology, the device and unit protection unit include open circuit
Device DL1And DL2, it is fastp-acting fuse and overvoltage protection device, overcurrent protective device, open phase protector, short-circuit protector, overheated
Protector, current changing rate monitor, voltage change ratio monitor, realize the guarantor of electronic power switch, reactor and capacitor
Shield.
In above-mentioned a kind of new dynamic voltage adjustment reactive-load compensation topology, dynamic voltage adjustment and the control of reactive power compensating unit bag
Include high-performance microprocessor, 8 tunnels synchronously 16 A/D analog digital conversion High Speed Data Acquisitions, 16 road photoelectric switch amounts of isolation
Output board and dynamic voltage adjustment and idle compensating control；The high-performance microprocessor be 32 and above CPU, 400MHz with
Upper dominant frequency；8 tunnels synchronously 16 A/D analog digital conversion High Speed Data Acquisitions of isolation, 16 road photoelectric switch amount output boards and
Dynamic voltage adjustment and idle compensating control are connected with high-performance microprocessor simultaneously.
Therefore, the invention has the advantages that：1st, voltage regulation result is good：While dynamic voltage adjustment is realized, it can be ensured that negative
Lotus side voltage deviation Δ U is maintained at allowed band ± 3%UNWithin.2nd, power factor is high：Series reactance dynamic passive compensation is filled
Putting can realize load side electricity with dynamic control and the compound mode and parameter of adjustment variable reactor and capacitor connection in series-parallel component
Pressure index is up to standard and transformer platform area power factor is improved.3rd, added losses are low：Series reactance dynamic reactive compensation device is adopted
IGCT electronic power switch, either in the conduction state, or be off state, its power attenuation is much smaller than IGBT device
The loss of speed-sensitive switch state.4th, system power is little：Reactor and the parallel connection in parallel of series reactance dynamic reactive compensation device
Capacitor bank, substantially reduces System Reactive Power electric current.5th, pressure regulation low cost：Series reactance dynamic reactive compensation device is by 2
Power side arranges the parameter of variable reactor and capacitor connection in series-parallel component, while voltage regulation result is met, makes pressure regulation cost
Far below existing voltage-regulating technique and device.6th, operation maintenance is convenient：Series reactance dynamic reactive compensation device is using non-maintaining
Automatic running mode works, without the need for artificial operation.7th, safety is good：Series reactance dynamic reactive compensation device is opened using IGCT
Control technology is closed, the steady operation under power frequency, loss is little, is hardly damaged, therefore safety is good.In a word.The present invention both can have
Effect adjusts load side voltage, and transformer platform area power factor can be improved again, purifies electrical network, improves the quality of power supply, wastage reducing and energy saving；
Improve the work efficiency of efficiency and electrical equipment.The present invention has simple structure, stable performance, economical and practical
Feature.
Description of the drawings
Fig. 1 is transformer platform area variable element voltage regulating compensating device structured flowchart.
Fig. 2 is transformer platform area variable element voltage regulating compensating device embodiment system wiring schematic diagram.
Fig. 3 is transformer platform area variable element voltage regulating compensating device embodiment system construction drawing.
Specific embodiment
Below by embodiment, and accompanying drawing is combined, technical scheme is described in further detail.
Embodiment：
With reference to the accompanying drawings and examples, to variable in-line reactance dynamic voltage adjustment reactive power compensator of the present invention specifically
It is bright：
First, it is overall
1st, variable in-line reactance dynamic voltage adjustment reactive-load compensation method.
As shown in figure 1, a kind of variable in-line reactance dynamic voltage adjustment reactive-load compensation method, arranges variable reactor and capacitor
The real-time detection unit of the power factor of component, the voltage deviation at module outlet end, operating condition and arrival end and variable
The parameter control unit of reactor and capacitor connection in series-parallel component, between load arrival end and electrical network access variable reactor and
Capacitor assembly, by the voltage deviation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end, operation work
The power factor of condition and arrival end, changes and adjusts variable reactor and capacitor connection in series-parallel compound mode and parameter, realizes negative
Lotus side voltage indexes are up to standard and grid side power factor is improved.
Specifically include following steps：
Step 1, setting variable reactor and capacitor connection in series-parallel component, constitute dynamic voltage adjustment reactive-load compensation major loop；Tool
Body method is：
Variable reactor and capacitor assembly are made up of variable reactor series component and capacitor parallel component；
Variable reactor series component is in series by the different reactor of multiple parameters, with shnt capacitor assemble conjunction and
Regulating circuit is formed, the voltage of load side is adjusted；
The parameter of the reactor of n different series reactance branch roads should meet the reactance value of counter element and close in 2 n-1 powers
System, i.e.,：Series reactance branch road 1,2,3 ..., the induction reactance parameter of the reactor of n is respectively：jXL1, j2XL1, j4XL1..., j2n- 1XL1, n=1,2,3 ..., NL；Wherein, n is natural number；
Variable condenser parallel component by the different capacitor of multiple parameters be formed in parallel voltage and power factor adjustment electricity
Road, by the capacitor value of reactive power capacity configuration capacitor；
Shnt capacitor branch road be 1,2,3 ..., NC, the capacitive reactive power capacity of n-th shnt capacitor is 2 n-
1 power, i.e.,：QC1、2QC1、4QC1、8QC1、...、2n-1QC1, n=1,2,3 ..., NC；
Current-limiting reactor branch road 1,2,3 ..., NLWith shnt capacitor branch road 1,2,3 ..., NCCombination should meet load side
Voltage indexes the requirement up to standard and raising of grid side power factor.
Step 2, variable reactor and capacitor connection in series-parallel component are accessed between load arrival end and electrical network, form dynamic
Pressure regulation candidate compensation buses, concrete grammar is：Three phases changeable reactance device series component is by three separate, counter element parameters
Identical variable reactor series component is constituted；
One end of three phases changeable reactance device series component respectively with a certain phase (A, B, C) of load side (be connected, it is another
The corresponding phase (A, B, C) of end difference grid side is connected)；
Three-phase capacitor parallel component is by three separate, counter element parameter identical capacitor parallel component groups
Into using star-star connection connection；
Three-phase capacitor parallel component one end difference load side a certain phase (A, B, C) be connected, the other end with it is in parallel
Neutral point N of component star-star connection links together；For three-phase four-wire system, neutral point N needs the neutrality for accessing electrical network
Point connecting line；
Voltage deviation, the operating condition of step 3, real-time detection variable reactor and capacitor connection in series-parallel module outlet end
It is that load side voltage and grid side power factor regulation provide control information with the power factor of arrival end, concrete mode is：
The voltage deviation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end, operating condition and entrance
The power factor at end, is that load side voltage and grid side power factor regulation provide control information：
On the basis of step 2, the variation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end
The power factor of amount, operating condition and arrival end, its main contents include：Three-phase voltage, electric current, active power, reactive power
And power factor；
The voltage deviation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end, operating condition and entrance
The precision and response time of the power factor at end meets basic demand and the technical standard of electric energy quality monitoring；
The voltage deviation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end, operating condition and entrance
The quality of power supply and operating condition situation of the power factor at end, true reflection load side and grid side, while embodying dynamic voltage adjustment
The effect of reactive-load compensation
Step 4, the voltage deviation according to detection, operating condition and power factor, determine dynamic voltage adjustment and reactive-load compensation
Scope, concrete grammar is：On the basis of step 2 and step 3, voltage deviation, operating condition according to module outlet end and
The power factor of arrival end, determines dynamic voltage adjustment and reactive-load compensation scope；
The principle for determining dynamic voltage adjustment and reactive-load compensation scope is calculated according to circuit and systematic parameter and measured data
Go out under the conditions of meeting that variation is qualified and power factor is as up to standard as possible, the change model of variable reactor and capacitor parameters
Enclose；
Step 5, according to for electricity consumption operating mode, the parameter of dynamic adjustment connection in series-parallel variable reactor and capacitor realizes load
Side voltage indexes are up to standard and grid side power factor is improved, and concrete grammar is：On the basis of step 2, step 3 and step 4, root
According to the power factor of the voltage deviation at module outlet end, operating condition and arrival end, dynamic adjustment connection in series-parallel variable reactor
With the parameter and structure of capacitor, i.e.,：When low voltage, increase the reactance value of reactor, increase reactive compensation capacity, suitably
Overcompensation, so as to raise load terminal voltage；When voltage is higher, the reactance value of appropriate adjustment reactor reduces reactive-load compensation and holds
Amount, so as to reduce load terminal voltage.
2nd, variable in-line reactance dynamic voltage adjustment reactive power compensator.
As shown in Fig. 2 variable in-line reactance dynamic voltage adjustment reactive power compensator includes variable reactor and capacitor string simultaneously
Receipts or other documents in duplicate unit 10, load voltage offsets and grid no-power vacancy detector unit 20, dynamic voltage adjustment and the control of reactive power compensating unit 30, dynamic
State pressure regulation and reactive-load compensation performance element 40 and device and unit protection unit 50.
One end series component end connection electrical network of variable reactor and capacitor connection in series-parallel unit 10, other end series component
With parallel component common port connected load side；Load voltage offsets and two groups of inputs of grid no-power vacancy detector unit 20 divide
Not Jie Ru series component end grid side and series component and parallel component common port load side；Load voltage offset and electrical network without
The output connection dynamic voltage adjustment of work(vacancy detector unit 20 and the control of reactive power compensating unit 30 are input into；Dynamic voltage adjustment and reactive-load compensation
The output connection dynamic voltage adjustment of control unit 30 and the input of reactive-load compensation performance element 40；Dynamic voltage adjustment and reactive-load compensation are performed
The output connection variable reactor of unit 40 and the input of capacitor connection in series-parallel unit 10；Device and unit protection unit 50 it is defeated
The input and dynamic voltage adjustment and reactive-load compensation performance element 40 for going out to connect variable reactor and capacitor connection in series-parallel unit 10 is input into.
2nd, major function block.
1. variable reactor and capacitor connection in series-parallel unit 10：By variable reactor series unit and capacitor parallel units
Composition, for realizing that load side voltage indexes are up to standard and grid side power factor is improved.
2. load voltage offsets and grid no-power vacancy detector unit 20：By two groups of threephase potential transformers and two groups of three-phases
Current transformer is constituted, for gathering the three-phase voltage of variable reactor and the grid side of capacitor connection in series-parallel unit 10 and load side
And three-phase current.
3. dynamic voltage adjustment and the control of reactive power compensating unit 30：By high-performance microprocessor or the synchronously isolation 16 of industrial computer, 8 tunnels
Position A/D analog digital conversion High Speed Data Acquisitions, 16 road photoelectric switch amount output boards and voltage and power factor are detected, divided
Analysis, intelligent control software composition, by real-time control dynamic voltage adjustment and reactive-load compensation performance element 40, dynamic control variable reactance
The structure and parameter of device and capacitor connection in series-parallel unit 10, realizes that load side voltage indexes are up to standard and grid side power factor is improved
Target.
4. dynamic voltage adjustment and reactive-load compensation performance element 40：It is made up of mechanical switch or electronic power switch, its specified electricity
Pressure, electric current and power match with the electrical network and load that access, meet the requirement of operation steady in a long-term.Electronic power switch passes through
Dynamic voltage adjustment and the control of reactive power compensating unit 30 control corresponding triggers circuit and realize its turn-on and turn-off.
5. device and unit protection unit 50：By di/dt, du/dt, overvoltage, overcurrent, phase shortage, short circuit, overheated, former
Barrier is exited and the protection composition such as auto by pass, realizes the protection of electronic power switch, reactor and capacitor.
3rd, example
As shown in figure 3, the single-phase elementary diagram of a variable in-line reactance dynamic voltage adjustment reactive power compensator.In Fig. 3
Vs be electrical network equivalent voltage source voltage, Rs be electrical network equivalent resistance, ZLFor load, DL1 and DL2 is chopper, jXL1,j2XL1,
j4XL1..., j2n-1XL1For current-limiting reactor reactance parameter, n=1,2,3 ..., NL,-jQC1、-j2QC1、-j4QC1、-
j8QC1、...、-j2n-1QC1For shnt capacitor capacity, n=1,2,3 ..., NC。
1st, variable reactor and capacitor connection in series-parallel unit 10.
It is made up of equivalent variable reactor series component and equivalent condenser parallel component.
Equivalent variable reactor assemblies are in series by n Reactor Branch.Equivalent variable reactor series component one end
Get access to grid equiva lent impedance Rs, another termination load ZL。
The reactance parameter of the reactor of n-th Reactor Branch is 2 n-1 powers, i.e.,：jXL1,j2XL1,
j4XL1..., j2n-1XL1, n=1,2,3 ..., NL, by thyristor switch K11, K12..., K1N carries out parallel combination, is formed
The equivalent variable reactor series component of load side voltage is adjusted, the dynamic regulation to load side voltage is realized.
Equivalent condenser parallel component is by NCIndividual capacitor branches are formed in parallel.The termination of equivalent condenser parallel component one is negative
Lotus source ZL, the other end gets access to grid the neutral conductor of equivalent voltage source.
The capacitive reactive power capacity of n-th shnt capacitor branch road is 2 n-1 powers, i.e.,：-jQC1、 -j2QC1、-
j4QC1、-j8QC1、...、-j2n-1QC1, n=1,2,3 ..., NC。
Equivalent condenser parallel component passes through thyristor switch K21, K22..., K2nShnt capacitor is carried out and joint group
Close, form the pressure regulation reactive-load compensation variable reactor and capacitor corresponding with load side rated voltage and grid side power factor
Parallel component, realizes effectively adjusting the requirement that load side voltage and grid side power factor are improved.
2nd, load voltage skew and grid no-power vacancy detector unit 20.
By two groups of voltage transformer V1And V2, two groups of current transformer I1And I2Composition, for detecting grid side and load side
Voltage and current.
3rd, dynamic voltage adjustment and the control of reactive power compensating unit 30.
Dynamic voltage adjustment and the control of reactive power compensating unit 30 are by high-performance microprocessor or the synchronously isolation 16 of industrial computer, 8 tunnels
A/D analog digital conversion High Speed Data Acquisitions, 16 road photoelectric switch amount output boards and voltage and power factor detection, analysis,
Intelligent control software is constituted, by real-time control dynamic voltage adjustment and reactive-load compensation performance element 40, dynamic control variable reactor
With the structure and parameter of capacitor connection in series-parallel unit 10, realize that load side voltage indexes are up to standard and the raising of grid side power factor
Target.
The range of accommodation of the equivalent parameterss of variable reactor series component is：
In formula：V2 be load side voltage, VSFor grid side rated voltage, I is load current, RSAnd XLRespectively electrical network etc.
Effect resistance and variable in-line reactor assemblies equivalent reactance.
4th, dynamic voltage adjustment and reactive-load compensation performance element 40.
By thyristor switch K11, K12..., K1n；K21, K22..., K2nComposition, for equivalent variable reactor series connection group
The connection in series-parallel combination control of part and equivalent condenser parallel component.
Thyristor switch K11, K12..., K1nFor the state modulator of variable reactor series component, when the switch is closed,
Corresponding reactor is exited, and equivalent reactance parameter is reduced；When the switches are opened, corresponding reactor input, equivalent reactance parameter
Increase.
Thyristor switch K11, K12..., K1n；K21, K22..., K2nFor the parameter control of variable condenser parallel component
System, when the switch is closed, corresponding capacitor input, equivalent capacity parameter increases；When the switches are opened, corresponding capacitor is moved back
Go out, equivalent capacity parameter is reduced.
5th, device and unit protection unit 50.
By chopper DL1And DL2, fastp-acting fuse, di/dt, du/dt, overvoltage, overcurrent, phase shortage, short circuit, it is overheated,
Failure is exited and the protection composition such as auto by pass, realizes the protection of electronic power switch, reactor and capacitor.
Specific embodiment described herein is only explanation for example spiritual to the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications to described specific embodiment or supplement or replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (8)
1. a kind of variable in-line reactance dynamic voltage adjustment reactive-load compensation method, it is characterised in that：Variable reactor and capacitor are set
The real-time detection unit of the power factor of component, the voltage deviation at module outlet end, operating condition and arrival end and variable
The parameter control unit of reactor and capacitor connection in series-parallel component, between load arrival end and electrical network access variable reactor and
Capacitor assembly, by the voltage deviation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end, operation work
The power factor of condition and arrival end, changes and adjusts variable reactor and capacitor connection in series-parallel compound mode and parameter, realizes negative
Lotus side voltage indexes are up to standard and grid side power factor is improved；
Specifically include following steps：
Step 1, setting variable reactor and capacitor connection in series-parallel component, constitute dynamic voltage adjustment reactive-load compensation major loop；
Step 2, variable reactor and capacitor connection in series-parallel component are accessed between load arrival end and electrical network, form dynamic voltage adjustment
Candidate compensation buses, concrete grammar is：Three phases changeable reactance device series component is by three separate, counter element parameter is identical
Variable reactor series component composition；
One end of three phases changeable reactance device series component is connected respectively with a certain phase (A, B, C) of load side, other end difference
The corresponding phase (A, B, C) of grid side is connected；
Three-phase capacitor parallel component is adopted by three separate, counter element parameter identical capacitor parallel component is constituted
Connected with star-star connection；
One end of three-phase capacitor parallel component is connected respectively with a certain phase (A, B, C) of load side, the other end and simultaneously joint group
Neutral point N of part star-star connection links together；For three-phase four-wire system, neutral point N needs the neutral point for accessing electrical network
Connecting line；
Step 3, the voltage deviation of real-time detection variable reactor and capacitor connection in series-parallel module outlet end, operating condition and enter
The power factor at mouth end, is that load side voltage and grid side power factor regulation provide control information, and concrete mode is：
The voltage deviation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end, operating condition and arrival end
Power factor, is that load side voltage and grid side power factor regulation provide control information：
On the basis of step 2, the voltage deviation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end, fortune
The power factor of row operating mode and arrival end, its main contents include：Three-phase voltage, electric current, active power, reactive power and power
Factor；
The voltage deviation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end, operating condition and arrival end
The precision and response time of power factor meets basic demand and the technical standard of electric energy quality monitoring；
The voltage deviation at real-time detection variable reactor and capacitor connection in series-parallel module outlet end, operating condition and arrival end
The quality of power supply and operating condition situation of power factor, true reflection load side and grid side, while it is idle to embody dynamic voltage adjustment
The effect of compensation；
Step 4, the voltage deviation according to detection, operating condition and power factor, determine dynamic voltage adjustment and reactive-load compensation scope,
Concrete grammar is：Voltage deviation, operating condition and arrival end on the basis of step 2 and step 3, according to module outlet end
Power factor, determine dynamic voltage adjustment and reactive-load compensation scope；
The principle for determining dynamic voltage adjustment and reactive-load compensation scope is calculated according to circuit and systematic parameter and measured data
Meet that variation is qualified and under the conditions of power factor is as up to standard as possible, the excursion of variable reactor and capacitor parameters；
Step 5, according to for electricity consumption operating mode, the parameter of dynamic adjustment connection in series-parallel variable reactor and capacitor realizes load side electricity
Pressure index is up to standard and grid side power factor is improved, and concrete grammar is：On the basis of step 2, step 3 and step 4, according to group
The power factor of the voltage deviation, operating condition and arrival end of the part port of export, dynamic adjustment connection in series-parallel variable reactor and electricity
The parameter and structure of container, i.e.,：When low voltage, increase the reactance value of reactor, increase reactive compensation capacity, appropriate mistake is mended
Repay, so as to raise load terminal voltage；When voltage is higher, the reactance value of appropriate adjustment reactor reduces reactive compensation capacity, from
And reduce load terminal voltage.
2. a kind of variable in-line reactance dynamic voltage adjustment reactive-load compensation method according to claim 1, it is characterised in that described
The concrete grammar of major loop is arranged in step 1 is：
Variable reactor and capacitor assembly are made up of variable reactor series component and capacitor parallel component；
Variable reactor series component is in series by the different reactor of multiple parameters, assembles conjunction with shnt capacitor and is formed
Regulating circuit, adjusts the voltage of load side；
The parameter of the reactor of n different series reactance branch roads should meet the reactance value of counter element in 2 n-1 power relations,
I.e.：Series reactance branch road 1,2,3 ..., the induction reactance parameter of the reactor of n is respectively：jXL1, j2XL1, j4XL1..., j2n-1XL1,
N=1,2,3 ..., NL；Wherein, n is natural number；
Variable condenser parallel component is formed in parallel voltage and power factor regulating circuit by the different capacitor of multiple parameters, is pressed
The capacitor value of reactive power capacity configuration capacitor；
Shnt capacitor branch road be 1,2,3 ..., NC, the capacitive reactive power capacity of n-th shnt capacitor is n-1 time of 2
Side, i.e.,：QC1、2QC1、4QC1、8QC1、...、2n-1QC1, n=1,2,3 ..., NC；
Current-limiting reactor branch road 1,2,3 ..., NLWith shnt capacitor branch road 1,2,3 ..., NCCombination should meet load side voltage
Index the requirement up to standard and raising of grid side power factor.
3. the variable in-line reactance of the variable in-line reactance dynamic voltage adjustment reactive-load compensation method described in a kind of employing claim 1 is moved
State voltage-regulating reactive compensator, it is characterised in that including a variable reactor and capacitor connection in series-parallel unit (10)；It is described can
Become the series component end connection electrical network of reactor and capacitor connection in series-parallel unit (10), variable reactor and capacitor connection in series-parallel list
First (10) series component and parallel component common port connected load side；Load voltage offsets and grid no-power vacancy detector unit
(20) two groups of inputs are respectively connected to the load side of series component end grid side and series component and parallel component common port；Load
The output connection dynamic voltage adjustment of variation and grid no-power vacancy detector unit (20) and the control of reactive power compensating unit (30) are defeated
Enter；Dynamic voltage adjustment and the control of reactive power compensating unit (30) output connection dynamic voltage adjustment and reactive-load compensation performance element (40) it is defeated
Enter；The output connection variable reactor of dynamic voltage adjustment and reactive-load compensation performance element (40) and capacitor connection in series-parallel unit (10)
Input；Device and unit protection unit (50) output connection variable reactor and capacitor connection in series-parallel unit (10) input and
Dynamic voltage adjustment and reactive-load compensation performance element (40) are input into；
Wherein, the variable reactor and capacitor assembly (10) are including equivalent variable reactor series component and equivalent condenser
Parallel component；The equivalent variable reactor assemblies include n Reactor Branch series connection；The equivalent variable reactor series connection group
Part one end gets access to grid equiva lent impedance Rs, another termination load ZL；
The equivalent condenser parallel component includes NCIndividual capacitor branches are in parallel, and the termination of equivalent condenser parallel component one is negative
Lotus source ZL, the other end gets access to grid the neutral conductor of equivalent voltage source.
4. the variable in-line reactance of employing variable in-line reactance dynamic voltage adjustment reactive-load compensation method according to claim 3 is moved
State voltage-regulating reactive compensator, it is characterised in that in the equivalent variable reactor assemblies, the reactance of n-th Reactor Branch
The reactance parameter of device is 2 n-1 powers, i.e.,：jXL1,j2XL1,j4XL1..., j2n-1XL1, n=1,2,3 ..., NL, pass through
Thyristor switch K11, K12..., K1N carries out parallel combination, forms the equivalent variable reactor series connection group for adjusting load side voltage
Part, realizes the dynamic regulation to load side voltage；
In the equivalent condenser parallel component, the capacitive reactive power capacity of n-th shnt capacitor branch road is n-1 time of 2
Side, i.e.,：-jQC1、-j2QC1、-j4QC1、-j8QC1、...、-j2n-1QC1, n=1,2,3 ..., NC；
Each shnt capacitor branch road of the equivalent condenser parallel component switchs K by series thyristor respectively21, K22...,
K2nCarry out parallel combination to shnt capacitor, formed the pressure regulation corresponding with load side rated voltage and grid side power factor without
Work(compensates variable reactor and capacitor parallel component；
The thyristor switch is made up of a pair just antiparallel two triode thyristors.
5. a kind of variable in-line of employing variable in-line reactance dynamic voltage adjustment reactive-load compensation method according to claim 3 is electric
Anti- dynamic voltage adjustment reactive power compensator, it is characterised in that load voltage offsets and grid no-power vacancy detector unit (20) includes
Two groups of voltage transformer V1And V2, two groups of current transformer I1And I2；For gathering variable reactor and capacitor connection in series-parallel unit
(10) three-phase voltage and three-phase current of grid side and load side.
6. a kind of variable in-line of employing variable in-line reactance dynamic voltage adjustment reactive-load compensation method according to claim 3 is electric
Anti- dynamic voltage adjustment reactive power compensator, it is characterised in that the dynamic voltage adjustment and reactive-load compensation performance element (40) are including brilliant lock
Pipe switchs K11, K12..., K1n, and thyristor switch K21, K22..., K2n；The performance element of variable reactor series component
By each reactor correspondence successively parallel thyristors switch K11, K12..., K1n, when the switch is closed, corresponding reactor is moved back
Go out；When the switches are opened, corresponding reactor input；
The performance element of variable condenser parallel component is sequentially connected in series thyristor switch K by each capacitor correspondence21, K22...,
K2n, when the switch is closed, corresponding capacitor input；When the switches are opened, corresponding capacitor is exited.
7. a kind of variable in-line of employing variable in-line reactance dynamic voltage adjustment reactive-load compensation method according to claim 3 is electric
Anti- dynamic voltage adjustment reactive power compensator, it is characterised in that the device and unit protection unit (50) are including chopper DL1With
DL2, fastp-acting fuse and overvoltage protection device, overcurrent protective device, open phase protector, short-circuit protector, overheat protector,
Current changing rate monitor, voltage change ratio monitor, realize the protection of electronic power switch, reactor and capacitor.
8. a kind of variable in-line of employing variable in-line reactance dynamic voltage adjustment reactive-load compensation method according to claim 3 is electric
Anti- dynamic voltage adjustment reactive power compensator, it is characterised in that dynamic voltage adjustment and the control of reactive power compensating unit (30) are micro- including high-performance
Processor, 8 tunnels synchronously 16 A/D analog digital conversion High Speed Data Acquisitions of isolation, 16 road photoelectric switch amount output boards and
Dynamic voltage adjustment and idle compensating control；The high-performance microprocessor be 32 and above CPU, more than 400MHz dominant frequency；8 tunnels
16 A/D analog digital conversion High Speed Data Acquisitions, 16 road photoelectric switch amount output boards and dynamic voltage adjustments of synchronous isolation and
Idle compensating control is connected with high-performance microprocessor simultaneously.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106533073B (en) * | 2016-12-23 | 2023-07-14 | 山东新沙单轨运输装备有限公司 | Design method and use method for changing three-phase alternating current motor into generator |
| CN108574437A (en) * | 2017-03-10 | 2018-09-25 | 北京圣非凡电子系统技术开发有限公司 | A kind of method of controlled reactor and the reactance value for controlling controlled reactor |
| WO2019084674A1 (en) | 2017-10-31 | 2019-05-09 | Hatch Ltd. | Line control circuit configuration |
| CN110829453A (en) * | 2019-11-14 | 2020-02-21 | 珠海格力电器股份有限公司 | Intelligent compensation device and control method thereof |
| CN111463802A (en) * | 2020-03-27 | 2020-07-28 | 国网浙江省电力有限公司嘉兴供电公司 | Segmented controllable series reactor device and distribution line voltage control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201238196Y (en) * | 2007-11-07 | 2009-05-13 | 重庆海润节能技术有限公司 | Intelligent reactive power compensation and harmonic wave filter circuit |
| CN202167852U (en) * | 2011-08-16 | 2012-03-14 | 珠海市汇通电气有限公司 | Passive filtering device with adjustable inductance parameters |
| CN204681098U (en) * | 2015-03-30 | 2015-09-30 | 武汉大学 | A kind of novel dynamic voltage adjustment reactive power compensation topology |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004336948A (en) * | 2003-05-12 | 2004-11-25 | Fuji Electric Systems Co Ltd | Reactive power compensation device |
-
2015
- 2015-03-30 CN CN201510145356.9A patent/CN104734161B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201238196Y (en) * | 2007-11-07 | 2009-05-13 | 重庆海润节能技术有限公司 | Intelligent reactive power compensation and harmonic wave filter circuit |
| CN202167852U (en) * | 2011-08-16 | 2012-03-14 | 珠海市汇通电气有限公司 | Passive filtering device with adjustable inductance parameters |
| CN204681098U (en) * | 2015-03-30 | 2015-09-30 | 武汉大学 | A kind of novel dynamic voltage adjustment reactive power compensation topology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2798470C1 (en) * | 2022-08-23 | 2023-06-23 | Дмитрий Иванович Панфилов | Method for reactive resistance control of reactive power compensator |
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Effective date of registration: 20191014 Address after: 530000 10 / F, block B, No. 88, West University Road, Nanning City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi luogui energy conservation and Environmental Protection Research Institute Co.,Ltd. Address before: 430072 room 3402, teaching building 3, engineering department, Wuhan University, No. 8, Donghu South Road, Wuchang District, Wuhan City, Hubei Province Co-patentee before: Assets Management Investment Management Co., Ltd. of Wuhan University Patentee before: Li Xiaoming Effective date of registration: 20191014 Address after: 430072 room 3402, teaching building 3, engineering department, Wuhan University, No. 8, Donghu South Road, Wuchang District, Wuhan City, Hubei Province Co-patentee after: Assets Management Investment Management Co., Ltd. of Wuhan University Patentee after: Li Xiaoming Address before: 430072 Hubei Province, Wuhan city Wuchang District of Wuhan University Luojiashan Patentee before: WuHan University |