CN108418206A - Dry smoothing reactor loss computing method and device and appraisal procedure and device - Google Patents
Dry smoothing reactor loss computing method and device and appraisal procedure and device Download PDFInfo
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- CN108418206A CN108418206A CN201810164585.9A CN201810164585A CN108418206A CN 108418206 A CN108418206 A CN 108418206A CN 201810164585 A CN201810164585 A CN 201810164585A CN 108418206 A CN108418206 A CN 108418206A
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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
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
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Abstract
The present invention provides it is a kind of based on etc. heat flow densities dry smoothing reactor loss computing method and device and appraisal procedure and device, first determine the inductance matrix and resistor matrix of dry smoothing reactor, then the alternating current-direct current distribution of dry smoothing reactor is calculated, the loss of dry smoothing reactor is finally calculated, and the loss of dry smoothing reactor is assessed.The present invention can accurately calculate the resistive loss of each layer winding coil of dry smoothing reactor, allowance need not be risen by increasing temperature and improve the safety that the DC current in temperature rise test ensures dry smoothing reactor, the expense for avoiding insulating materials increases, and the conducting wire needed is less, it is at low cost, and realize lightness.The heat dissipation that the present invention solves dry smoothing reactor in the confined space under the conditions of Natural Circulation simultaneously rises with temperature and controls problem, it thus greatly reduces dry smoothing reactor and excessively high caused accident occurrence probability is risen by temperature, ensure that the reliable and stable uninterrupted operation of reactor.
Description
Technical field
The present invention relates to power electronics fields, and in particular to it is a kind of based on etc. heat flow densities dry smoothing reactor
Loss computing method and device and appraisal procedure and device.
Background technology
Extra-high voltage dry type (hollow) smoothing reactor is one of most important equipment of extra-high voltage direct-current transmission engineering, general to go here and there
It is associated between converter power transformer and DC power transmission line, in DC transmission system reactive-load compensation, current limliting, filtering and overvoltage protection
Etc. play important function, and because of its oil-free, environmental protection, operating system, substantially non-maintaining etc. advantages are not assisted, in power grid
In be widely applied.
Dry smoothing reactor is made of n coaxial winding coils, and each winding coil is by one or more parallel connection
Winding transposition wire form, every transposed conductor is composed of multiply monofilament round wire.By gas between winding coil
Road and stay interval, stay mainly play fixed function, and air flue is used to improve the heat dissipation performance of dry smoothing reactor.Electrically joining
It connects and is connected in parallel using multiple coaxial winding coils, equivalent-circuit model is as shown in Figure 1, wherein L1,1、L2,2、
L3,3、……、Ln,nIt is the self-induction of winding coil, M1,2、M1,3、M1,4... it is mutual inductance between winding coil to wait, R1、R2、……
RnThe conductor resistance of every layer of winding coil, I1,I2,…,InFor the electric current of each winding coil, ULIndicate dry smoothing reactor
Voltage, ILIndicate the electric current of dry smoothing reactor.
It, will be because the internal resistance of winding coil itself generates loss hair when DC current or harmonic current flow through winding coil
Heat, this is the main source of dry smoothing reactor Wen Sheng.The loss of winding coil includes mainly direct current ohmic losses, exchange
Resistive loss (including circulation loss) and eddy-current loss.Wherein, proportion is very in the loss of winding coil for eddy-current loss
It is few, in addition, the application of built-in transposed conductor, can greatly reduce eddy-current loss so that damage of the eddy-current loss in winding coil
Proportion can be ignored in consumption, therefore when analyzing temperature rise of hot spot, main to consider direct current ohmic losses and alternating current
Ohmic losses.In the prior art in terms of dry smoothing reactor loss and the research of Wen Sheng, it is resistive to be primarily upon direct current
Loss and direct current ohmic losses effect under dry smoothing reactor Wen Sheng distribution, without considering that alternating current is resistive
The influence of loss and alternating current ohmic losses to dry smoothing reactor Distribution of temperature rise.In actual motion, the flat wave reactance of dry type
The alternating current ohmic losses that device is born can cause the displacement of hot spot.
In actual motion, dry smoothing reactor is due to caused by problem of temperature rise (temperature rise of hot spot excessively high and hot-spot etc.)
Accident occurs again and again, according to the actual measurement of the temperature of the dry smoothing reactor to accident occurs and disassembling analysis, it was demonstrated that most dry types
Smoothing reactor be all since hot(test)-spot temperature is high in operation and then accident caused by accelerating polyester film aging, when lead-in or
Rainwater accelerates aging after penetrating at plane of structure epoxy cracking, loses mechanical strength, cannot wrap conducting wire, when rainwater repeatedly penetrates into
When, cause turn-to-turn short circuit to cause ignition.The uneven excessively high and each layer winding coil average temperature rising of temperature rise of hot spot is to lead to thing
Therefore the main reason for occurring, however, in the prior art in dry smoothing reactor research, due to can not accurately calculate the flat wave of dry type
The loss of each layer winding coil of reactor, it is usually dry by increasing temperature liter allowance and improving the guarantee of the DC current in temperature rise test
The safety of formula smoothing reactor, but increase temperature rise allowance can increase insulating materials expense and needs conducting wire it is more, do
Formula smoothing reactor is of high cost, and cannot achieve lightweight.
Invention content
In order to overcome above-mentioned dry smoothing reactor in the prior art of high cost and cannot achieve light-weighted defect, this hair
It is bright provide it is a kind of based on etc. heat flow densities dry smoothing reactor loss computing method and device and appraisal procedure and device,
The inductance matrix and resistor matrix for first determining dry smoothing reactor, then according to the inductance matrix of dry smoothing reactor and electricity
The alternating current-direct current distribution that matrix calculates dry smoothing reactor is hindered, accurate meter is finally distributed according to the alternating current-direct current of dry smoothing reactor
Calculate the loss of dry smoothing reactor, and based on etc. heat flow densities and loss threshold value the loss of dry smoothing reactor is carried out
Assessment, realizes dry smoothing reactor lightweight, and at low cost.
In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme that：
On the one hand, the present invention provide it is a kind of based on etc. heat flow densities dry smoothing reactor loss computing method, it is described
Dry smoothing reactor includes n winding coil in parallel, and loss computing method includes：
Determine the inductance matrix and resistor matrix of dry smoothing reactor；
The alternating current-direct current distribution of dry smoothing reactor is calculated according to the inductance matrix of dry smoothing reactor and resistor matrix；
The loss for calculating dry smoothing reactor is distributed according to the alternating current-direct current of dry smoothing reactor.
The inductance matrix of the dry smoothing reactor is determined by Bartky converter techniques or finite element simulation method.
The resistor matrix of the dry smoothing reactor is determined by following formula：
Wherein, KRThe resistor matrix for indicating dry smoothing reactor, is diagonal matrix；RiIndicate i-th winding coil
Resistance, andΔ t indicates conducting wire average temperature rising, ρ0Indicate that the resistivity of conducting wire, α indicate temperature coefficient, a
Indicate fill factor, SiIndicate the wire sectional area of i-th of winding coil, liIndicate the conductor length of i-th of winding coil,
AndHiIndicate the height of i-th of winding coil, riIndicate the radius of i-th of winding coil, NiIt indicates
The number of turns of i-th of winding coil.
The alternating current-direct current that dry smoothing reactor is calculated according to the inductance matrix and resistor matrix of dry smoothing reactor
Distribution includes：
Determine the Equivalent circuit equations of the dry smoothing reactor such as following formula：
(KR+jωKL) I=U
Wherein, KRIndicate the resistor matrix of dry smoothing reactor, KLIndicate the inductance matrix of dry smoothing reactor, andL1,1、…、Ln,nIndicate the self-induction of each winding coil；M1,2、…、M1,nAnd M2,1、…、Mn,1
Indicate the mutual inductance between winding coil；ω indicates angular frequency；J indicates imaginary unit；U indicates the voltage of dry smoothing reactor,
And U=[UL UL … UL]T, ULIndicate the voltage of winding coil；I indicates the current matrix of dry smoothing reactor, I=[I1
I2 … Ii … In]T, IiIndicate the electric current of i-th of winding coil；
According to (KR+jωKL) I=U, IL=PTI and U=PUL, obtain (KR+jωKL) I=P { PT(KR+jωKL)-1P}- 1IL, P expression n dimensional vectors, each element therein is 1；ILIndicate the electric current of dry smoothing reactor, and IL=I1+I2
+…+Ii+…+In；
When DC current flows through dry smoothing reactor, (KR+jωKL) I=P { PT(KR+jωKL)-1P}-1ILIn ω
=0, dry smoothing reactor is shunted according to resistance；When harmonic current flows through dry smoothing reactor, (KR+jωKL)I
=P { PT(KR+jωKL)-1P}-1ILIn ω ≠ 0, dry smoothing reactor shunted according to inductance.
It is distributed according to the alternating current-direct current of dry smoothing reactor, and the loss of dry smoothing reactor is calculated as follows：
Wherein, P indicates the loss of dry smoothing reactor, PiIndicate the resistive loss of i-th of winding coil, and Pi=
Ii 2Ri。
On the other hand, the present invention provide it is a kind of based on etc. heat flow densities dry smoothing reactor loss calculation device, institute
It includes n winding coil in parallel to state dry smoothing reactor, and the loss calculation device includes：
First determining module, inductance matrix and resistor matrix for determining dry smoothing reactor；
Second determining module, for calculating the flat wave electricity of dry type according to the inductance matrix and resistor matrix of dry smoothing reactor
The alternating current-direct current of anti-device is distributed；
Loss calculation module, for being distributed the damage for calculating dry smoothing reactor according to the alternating current-direct current of dry smoothing reactor
Consumption.
First determining module includes：
Inductance matrix determination unit determines dry smoothing reactor for passing through Bartky converter techniques or finite element simulation method
Inductance matrix.
First determining module includes：
Resistor matrix determination unit, the resistor matrix for determining dry smoothing reactor by following formula：
Wherein, KRThe resistor matrix for indicating dry smoothing reactor, is diagonal matrix；RiIndicate i-th winding coil
Resistance, andΔ t indicates conducting wire average temperature rising, ρ0Indicate that the resistivity of conducting wire, α indicate temperature coefficient, a
Indicate fill factor, SiIndicate the wire sectional area of i-th of winding coil, liIndicate the conductor length of i-th of winding coil,
AndHiIndicate the height of i-th of winding coil, riIndicate the radius of i-th of winding coil, NiIt indicates
The number of turns of i-th of winding coil.
Second determining module includes：
Equivalent circuit equations determination unit, the Equivalent circuit equations for determining dry smoothing reactor, and according to dry type
Equivalent circuit equations, the I of smoothing reactorL=PTI and U=PUL, obtain (KR+jωKL) I=P { PT(KR+jωKL)-1P}-1IL；
Wherein the Equivalent circuit equations of dry smoothing reactor are (KR+jωKL) I=U, KLIndicate the inductance square of dry smoothing reactor
Battle array, andL1,1、…、Ln,nIndicate the self-induction of each winding coil；M1,2、…、M1,nAnd
M2,1、…、Mn,1Indicate the mutual inductance between winding coil；ω indicates angular frequency；J indicates imaginary unit；U indicates the flat wave reactance of dry type
The voltage of device, and U=[UL UL … UL]T, ULIndicate the voltage of winding coil；I indicates the current moment of dry smoothing reactor
Battle array, I=[I1 I2 … Ii … In]T, IiIndicate the electric current of i-th of winding coil；P indicates n dimensional vectors, therein each
Element is all 1；ILIndicate the electric current of dry smoothing reactor, and IL=I1+I2+…+Ii+…+In；
Alternating current-direct current is distributed determination unit, for when DC current flows through dry smoothing reactor, dry smoothing reactor
It is shunted according to resistance, when harmonic current flows through dry smoothing reactor, dry smoothing reactor is divided according to inductance
Stream,
The loss calculation module is specifically used for：
It is distributed according to the alternating current-direct current of dry smoothing reactor, and the loss of dry smoothing reactor is calculated as follows：
Wherein, P indicates the loss of dry smoothing reactor, PiIndicate the resistive loss of i-th of winding coil, and Pi=
Ii 2Ri。
In another aspect, the present invention also provides a kind of dry smoothing reactors, and appraisal procedure is lost, including：
Calculate the loss of dry smoothing reactor loss；
Based on etc. heat flow densities and loss threshold value the loss of dry smoothing reactor is assessed.
It is described based on etc. heat flow densities and loss threshold value to the loss of dry smoothing reactor carry out assessment include：
Judge whether to meet P≤P simultaneouslyset1With | Pi-Pi-1|≤Pset2, dry smoothing reactor meets the requirements；Otherwise it adjusts
The number of turns and sectional area of wire of whole each winding coil, and recalculate the resistive loss and the flat wave of dry type of each winding coil
The loss of reactor, until meeting P≤P simultaneouslyset1With | Pi-Pi-1|≤Pset2Until；
Wherein, Pset1Indicate the loss threshold value of dry smoothing reactor, Pset2Indicate the resistive loss difference of winding coil
Threshold value, Pi-1Indicate the resistive loss of i winding coil.
In another aspect, the present invention also provides a kind of dry smoothing reactors, and apparatus for evaluating is lost, including：
Loss calculation device；
Evaluation module, for based on etc. heat flow densities and loss threshold value the loss of dry smoothing reactor is assessed.
Evaluation module is specifically used for：
Judge whether to meet P≤P simultaneouslyset1With | Pi-Pi-1|≤Pset2, dry smoothing reactor meets the requirements；Otherwise it adjusts
The number of turns and sectional area of wire of whole each winding coil, and recalculate the resistive loss and the flat wave of dry type of each winding coil
The loss of reactor, until meeting P≤P simultaneouslyset1With | Pi-Pi-1|≤Pset2Until；Wherein, Pset1Indicate the flat wave reactance of dry type
The loss threshold value of device, Pset2Indicate the resistive loss difference threshold of winding coil, Pi-1Indicate the resistive of i winding coil
Loss.
Compared with the immediate prior art, technical solution provided by the invention has the advantages that：
It is provided by the invention based on etc. heat flow densities dry smoothing reactor loss computing method in, first determine that dry type is flat
Then the inductance matrix and resistor matrix of wave reactor calculate dry according to the inductance matrix of dry smoothing reactor and resistor matrix
The alternating current-direct current of formula smoothing reactor is distributed, and is finally distributed according to the alternating current-direct current of dry smoothing reactor and is calculated dry smoothing reactor
Loss, the loss result precision of calculated dry smoothing reactor is high；It is provided by the invention based on etc. heat flow densities
Dry smoothing reactor loss calculation device includes the first determining module, the second determining module and loss calculation module, and first really
Cover half block is used to determine that the inductance matrix and resistor matrix of dry smoothing reactor, the second determining module to be used for according to the flat wave of dry type
The inductance matrix and resistor matrix of reactor calculate the alternating current-direct current distribution of dry smoothing reactor, and loss calculation is according to the flat wave of dry type
The alternating current-direct current distribution of reactor calculates the loss of dry smoothing reactor, and the loss result of calculated dry smoothing reactor is accurate
Exactness is high；
It is provided by the invention based on etc. heat flow densities dry smoothing reactor loss appraisal procedure in, it is flat first to calculate dry type
The loss of wave reactor, the heat flow densities such as is then based on and loss threshold value assesses the loss of dry smoothing reactor, real
Dry smoothing reactor lightweight is showed, and at low cost；
It is provided by the invention based on etc. heat flow densities dry smoothing reactor loss apparatus for evaluating include loss calculation dress
It sets and evaluation module, loss calculation device is used to calculate the loss of dry smoothing reactor, evaluation module is used to be based on equal hot-fluids
Density and loss threshold value assess the loss of dry smoothing reactor, realize dry smoothing reactor lightweight, and at
This is low.
Description of the drawings
Fig. 1 is dry smoothing reactor equivalent-circuit model schematic diagram in the prior art；
Fig. 2 is dry smoothing reactor loss computing method flow chart in the embodiment of the present invention 1；
Fig. 3 is that appraisal procedure flow chart is lost in dry smoothing reactor in the embodiment of the present invention 2.
Specific implementation mode
Invention is further described in detail below in conjunction with the accompanying drawings.
Embodiment 1
The embodiment of the present invention 1 provide it is a kind of based on etc. heat flow densities dry smoothing reactor loss computing method, wherein
Dry smoothing reactor include n winding coil in parallel, the dry smoothing reactor loss meter that the embodiment of the present invention 1 provides
Calculation method particular flow sheet is as shown in Fig. 2, detailed process is as follows：
S101：Determine the inductance matrix and resistor matrix of dry smoothing reactor；
S102：The alternating current-direct current of dry smoothing reactor is calculated according to the inductance matrix of dry smoothing reactor and resistor matrix
Distribution；
S103：The loss for calculating dry smoothing reactor is distributed according to the alternating current-direct current of dry smoothing reactor.
In S101, the inductance matrix of dry smoothing reactor is determined by Bartky converter techniques or finite element simulation method, is done
The resistor matrix of formula smoothing reactor is determined by following formula：
Wherein, KRThe resistor matrix for indicating dry smoothing reactor, is diagonal matrix；RiIndicate i-th winding coil
Resistance, andΔ t indicates conducting wire average temperature rising, ρ0Indicate that the resistivity of conducting wire, α indicate temperature coefficient, a
Indicate fill factor, SiIndicate the wire sectional area of i-th of winding coil, liIndicate the conductor length of i-th of winding coil,
AndHiIndicate the height of i-th of winding coil, riIndicate the radius of i-th of winding coil, NiIt indicates
The number of turns of i-th of winding coil.
In above-mentioned S102, dry smoothing reactor is calculated according to the inductance matrix of dry smoothing reactor and resistor matrix
Alternating current-direct current is distributed, and detailed process is as follows：
1) Equivalent circuit equations of the dry smoothing reactor such as following formula are determined：
(KR+jωKL) I=U
Wherein, KLIndicate the inductance matrix of dry smoothing reactor, andL1,1、…、Ln,n
Indicate the self-induction of each winding coil；M1,2、…、M1,nAnd M2,1、…、Mn,1Indicate the mutual inductance between winding coil；ω is indicated
Angular frequency；J indicates imaginary unit；U indicates the voltage of dry smoothing reactor, and U=[UL UL … UL]T, ULIndicate winding wire
The voltage of circle；I indicates the current matrix of dry smoothing reactor, I=[I1 I2 … Ii … In]T, IiIndicate i-th of winding
The electric current of coil；
2) according to (KR+jωKL) I=U, IL=PTI and U=PUL, obtain (KR+jωKL) I=P { PT(KR+jωKL)-1P}- 1IL, P expression n dimensional vectors, each element therein is 1；ILIndicate the electric current of dry smoothing reactor, and IL=I1+I2
+…+Ii+…+In；
3) when DC current flows through dry smoothing reactor, due to (KR+jωKL) I=P { PT(KR+jωKL)-1P}-1IL
In ω=0, dry smoothing reactor shunted according to resistance；When harmonic current flows through dry smoothing reactor, due to
(KR+jωKL) I=P { PT(KR+jωKL)-1P}-1ILIn ω ≠ 0, dry smoothing reactor shunted according to inductance.
Above-mentioned S103 detailed processes are as follows：
1) it is distributed according to the alternating current-direct current of dry smoothing reactor, and the loss of dry smoothing reactor is calculated as follows：
Wherein, P indicates the loss of dry smoothing reactor, PiIndicate the resistive loss of i-th of winding coil, and Pi=
Ii 2Ri。
Based on the same inventive concept with computational methods of the present invention, the embodiment of the present invention 1 also provides a kind of flat wave electricity of dry type
Anti- device loss calculation device, wherein dry smoothing reactor includes n winding coil in parallel, based on etc. heat flow densities it is dry
Formula smoothing reactor loss calculation device specifically includes：
First determining module, inductance matrix and resistor matrix for determining dry smoothing reactor；
Second determining module, for calculating the flat wave electricity of dry type according to the inductance matrix and resistor matrix of dry smoothing reactor
The alternating current-direct current of anti-device is distributed；
Loss calculation module, for being distributed the damage for calculating dry smoothing reactor according to the alternating current-direct current of dry smoothing reactor
Consumption.
The first above-mentioned determining module includes：
1) inductance matrix determination unit determines the flat wave reactance of dry type for passing through Bartky converter techniques or finite element simulation method
The inductance matrix of device.
2) resistor matrix determination unit, the resistor matrix for determining dry smoothing reactor by following formula：
Wherein, KRThe resistor matrix for indicating dry smoothing reactor, is diagonal matrix；RiIndicate i-th winding coil
Resistance, andΔ t indicates conducting wire average temperature rising, ρ0Indicate that the resistivity of conducting wire, α indicate temperature coefficient, a
Indicate fill factor, SiIndicate the wire sectional area of i-th of winding coil, liIndicate the conductor length of i-th of winding coil,
AndHiIndicate the height of i-th of winding coil, riIndicate the radius of i-th of winding coil, NiIt indicates
The number of turns of i-th of winding coil.
The second above-mentioned determining module specifically includes：
1) Equivalent circuit equations determination unit, the Equivalent circuit equations for determining dry smoothing reactor, and according to dry
Equivalent circuit equations, the I of formula smoothing reactorL=PTI and U=PUL, obtain (KR+jωKL) I=P { PT(KR+jωKL)-1P}- 1IL；Wherein the Equivalent circuit equations of dry smoothing reactor are (KR+jωKL) I=U, KLIndicate the inductance of dry smoothing reactor
Matrix, andL1,1、…、Ln,nIndicate the self-induction of each winding coil；M1,2、…、M1,nAnd
M2,1、…、Mn,1Indicate the mutual inductance between winding coil；ω indicates angular frequency；J indicates imaginary unit；U indicates the flat wave reactance of dry type
The voltage of device, and U=[UL UL … UL]T, ULIndicate the voltage of winding coil；I indicates the current moment of dry smoothing reactor
Battle array, I=[I1 I2 … Ii … In]T, IiIndicate the electric current of i-th of winding coil；P indicates n dimensional vectors, therein each
Element is all 1；ILIndicate the electric current of dry smoothing reactor, and IL=I1+I2+…+Ii+…+In；
2) alternating current-direct current is distributed determination unit, for when DC current flows through dry smoothing reactor, due to (KR+jωKL)
I=P { PT(KR+jωKL)-1P}-1ILIn ω=0, dry smoothing reactor shunted according to resistance；When harmonic current flows through
When dry smoothing reactor, due to (KR+jωKL) I=P { PT(KR+jωKL)-1P}-1ILIn ω ≠ 0, dry smoothing reactor
It is shunted according to inductance.
Above-mentioned loss calculation module is distributed with specific reference to the alternating current-direct current of dry smoothing reactor, and it is flat that dry type is calculated as follows
The loss of wave reactor：
Wherein, P indicates the loss of dry smoothing reactor, PiIndicate the resistive loss of i-th of winding coil, and Pi=
Ii 2Ri。
Embodiment 2
The embodiment of the present invention 2 provides a kind of dry smoothing reactor loss appraisal procedure, as shown in figure 3, including following step
Suddenly：
S201：Determine the inductance matrix and resistor matrix of dry smoothing reactor；
S202：The alternating current-direct current of dry smoothing reactor is calculated according to the inductance matrix of dry smoothing reactor and resistor matrix
Distribution；
S203：The loss for calculating dry smoothing reactor is distributed according to the alternating current-direct current of dry smoothing reactor；
S204：Based on etc. heat flow densities and loss threshold value the loss of dry smoothing reactor is assessed.
The specific implementation method of above-mentioned S201, S202, S203 identical as S101, S102, S103 in embodiment 1
In above-mentioned S204, based on etc. heat flow densities and loss threshold value, according to following processes to the damage of dry smoothing reactor
Consumption is assessed, and detailed process is：
Judge whether to meet P≤P simultaneouslyset1With | Pi-Pi-1|≤Pset2, dry smoothing reactor meets the requirements；Otherwise it adjusts
The number of turns and sectional area of wire of whole each winding coil, and recalculate the resistive loss and the flat wave of dry type of each winding coil
The loss of reactor, until meeting P≤P simultaneouslyset1With | Pi-Pi-1|≤Pset2Until；Wherein, Pset1Indicate the flat wave reactance of dry type
The loss threshold value of device, Pset2Indicate the resistive loss difference threshold of winding coil, Pi-1Indicate the resistive of i winding coil
Loss.
Based on the same inventive concept with appraisal procedure of the present invention, the embodiment of the present invention 2 also provides a kind of flat wave electricity of dry type
Apparatus for evaluating is lost in anti-device, including：
First determining module, inductance matrix and resistor matrix for determining dry smoothing reactor；
Second determining module, for calculating the flat wave electricity of dry type according to the inductance matrix and resistor matrix of dry smoothing reactor
The alternating current-direct current of anti-device is distributed；
Loss calculation module, for being distributed the damage for calculating dry smoothing reactor according to the alternating current-direct current of dry smoothing reactor
Consumption；
Evaluation module meets P≤P simultaneously for judging whetherset1With | Pi-Pi-1|≤Pset2, dry smoothing reactor symbol
It closes and requires；Otherwise the number of turns and sectional area of wire of each winding coil are adjusted, and recalculates the resistive of each winding coil
The loss of loss and dry smoothing reactor, until meeting P≤P simultaneouslyset1With | Pi-Pi-1|≤Pset2Until；Wherein, Pset1Table
Show the loss threshold value of dry smoothing reactor, Pset2Indicate the resistive loss difference threshold of winding coil, Pi-1Indicate i around
The resistive loss of group coil.
In the specific implementation mode and embodiment 1 of above-mentioned first determining module, the second determining module and loss calculation module
Each module it is identical.
Technical solution provided by the invention can accurately calculate the resistive damage of each layer winding coil of dry smoothing reactor
Consumption need not rise allowance by increasing temperature and improve the safety that the DC current in temperature rise test ensures dry smoothing reactor
Property, the expense for avoiding insulating materials increases, and the conducting wire needed is less；
Technical solution provided by the invention solves under the conditions of Natural Circulation dissipating for dry smoothing reactor in the confined space
Heat controls problem with warm rise, and thus greatly reduces dry smoothing reactor and rises excessively high caused accident occurrence probability by temperature, protects
The reliable and stable uninterrupted operation of reactor is demonstrate,proved.
For convenience of description, each section of apparatus described above is divided into various modules with function or unit describes respectively.
Certainly, each module or the function of unit can be realized in same or multiple softwares or hardware when implementing the application.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, the application can be used in one or more wherein include computer usable program code computer
The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is with reference to method, the flow of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field with reference to above-described embodiment still can to the present invention specific implementation mode modify or
Equivalent replacement, these are applying for this pending hair without departing from any modification of spirit and scope of the invention or equivalent replacement
Within bright claims.
Claims (14)
1. a kind of dry smoothing reactor loss computing method, the dry smoothing reactor includes n winding coil in parallel,
It is characterized in that, the loss computing method includes：
Determine the inductance matrix and resistor matrix of dry smoothing reactor；
The alternating current-direct current distribution of dry smoothing reactor is calculated according to the inductance matrix of dry smoothing reactor and resistor matrix；
The loss for calculating dry smoothing reactor is distributed according to the alternating current-direct current of dry smoothing reactor.
2. dry smoothing reactor loss computing method according to claim 1, which is characterized in that the flat wave electricity of dry type
The inductance matrix of anti-device is determined by Bartky converter techniques or finite element simulation method.
3. dry smoothing reactor loss computing method according to claim 1, which is characterized in that the flat wave electricity of dry type
The resistor matrix of anti-device is determined by following formula：
Wherein, KRThe resistor matrix for indicating dry smoothing reactor, is diagonal matrix；RiIndicate the electricity of i-th of winding coil
Resistance, andΔ t indicates conducting wire average temperature rising, ρ0Indicate that the resistivity of conducting wire, α indicate temperature coefficient, a tables
Show fill factor, SiIndicate the wire sectional area of i-th of winding coil, liIndicate the conductor length of i-th of winding coil, andHiIndicate the height of i-th of winding coil, riIndicate the radius of i-th of winding coil, NiIndicate the
The number of turns of i winding coil.
4. dry smoothing reactor loss computing method according to claim 1, which is characterized in that described flat according to dry type
The alternating current-direct current of inductance matrix and resistor matrix the calculating dry smoothing reactor of wave reactor, which is distributed, includes：
Determine the Equivalent circuit equations of the dry smoothing reactor such as following formula：
(KR+jωKL) I=U
Wherein, KRIndicate the resistor matrix of dry smoothing reactor, KLIndicate the inductance matrix of dry smoothing reactor, andL1,1、…、Ln,nIndicate the self-induction of each winding coil；M1,2、…、M1,nAnd M2,1、…、Mn,1
Indicate the mutual inductance between winding coil；ω indicates angular frequency；J indicates imaginary unit；U indicates the voltage of dry smoothing reactor,
And U=[UL UL … UL]T, ULIndicate the voltage of winding coil；I indicates the current matrix of dry smoothing reactor, I=[I1
I2 … Ii … In]T, IiIndicate the electric current of i-th of winding coil；
According to (KR+jωKL) I=U, IL=PTI and U=PUL, obtain (KR+jωKL) I=P { PT(KR+jωKL)-1P}-1IL, P tables
Show that n dimensional vectors, each element therein are 1；ILIndicate the electric current of dry smoothing reactor, and IL=I1+I2+…+Ii+…
+In；
When DC current flows through dry smoothing reactor, (KR+jωKL) I=P { PT(KR+jωKL)-1P}-1ILIn ω=0,
Dry smoothing reactor is shunted according to resistance；When harmonic current flows through dry smoothing reactor, (KR+jωKL) I=P
{PT(KR+jωKL)-1P}-1ILIn ω ≠ 0, dry smoothing reactor shunted according to inductance.
5. dry smoothing reactor loss computing method according to claim 4, which is characterized in that according to the flat wave electricity of dry type
The alternating current-direct current of anti-device is distributed, and the loss of dry smoothing reactor is calculated as follows：
Wherein, P indicates the loss of dry smoothing reactor, PiIndicate the resistive loss of i-th of winding coil, and Pi=Ii 2Ri。
6. a kind of dry smoothing reactor loss calculation device, the dry smoothing reactor includes n winding coil in parallel,
It is characterized in that, the loss calculation device includes：
First determining module, inductance matrix and resistor matrix for determining dry smoothing reactor；
Second determining module, for calculating dry smoothing reactor according to the inductance matrix and resistor matrix of dry smoothing reactor
Alternating current-direct current distribution；
Loss calculation module, for being distributed the loss for calculating dry smoothing reactor according to the alternating current-direct current of dry smoothing reactor.
7. dry smoothing reactor loss calculation device according to claim 6, which is characterized in that described first determines mould
Block includes：
Inductance matrix determination unit, the electricity for determining dry smoothing reactor by Bartky converter techniques or finite element simulation method
Feel matrix.
8. dry smoothing reactor loss calculation device according to claim 6, which is characterized in that described first determines mould
Block includes：
Resistor matrix determination unit, the resistor matrix for determining dry smoothing reactor by following formula：
Wherein, KRThe resistor matrix for indicating dry smoothing reactor, is diagonal matrix；RiIndicate the electricity of i-th of winding coil
Resistance, andΔ t indicates conducting wire average temperature rising, ρ0Indicate that the resistivity of conducting wire, α indicate temperature coefficient, a tables
Show fill factor, SiIndicate the wire sectional area of i-th of winding coil, liIndicate the conductor length of i-th of winding coil, andHiIndicate the height of i-th of winding coil, riIndicate the radius of i-th of winding coil, NiIndicate the
The number of turns of i winding coil.
9. dry smoothing reactor loss calculation device according to claim 8, which is characterized in that described second determines mould
Block includes：
Equivalent circuit equations determination unit, the Equivalent circuit equations for determining dry smoothing reactor, and according to the flat wave of dry type
Equivalent circuit equations, the I of reactorL=PTI and U=PUL, obtain (KR+jωKL) I=P { PT(KR+jωKL)-1P}-1IL；Wherein
The Equivalent circuit equations of dry smoothing reactor are (KR+jωKL) I=U, KLIndicate the inductance matrix of dry smoothing reactor, andL1,1、…、Ln,nIndicate the self-induction of each winding coil；M1,2、…、M1,nAnd M2,1、…、Mn,1
Indicate the mutual inductance between winding coil；ω indicates angular frequency；J indicates imaginary unit；U indicates the voltage of dry smoothing reactor,
And U=[UL UL … UL]T, ULIndicate the voltage of winding coil；I indicates the current matrix of dry smoothing reactor, I=[I1
I2 … Ii … In]T, IiIndicate the electric current of i-th of winding coil；P indicates that n dimensional vectors, each element therein are 1；
ILIndicate the electric current of dry smoothing reactor, and IL=I1+I2+…+Ii+…+In；
Alternating current-direct current is distributed determination unit, for when DC current flows through dry smoothing reactor, dry smoothing reactor according to
Resistance is shunted, and when harmonic current flows through dry smoothing reactor, dry smoothing reactor is shunted according to inductance.
10. dry smoothing reactor loss calculation device according to claim 9, which is characterized in that the loss calculation
Module is specifically used for：
It is distributed according to the alternating current-direct current of dry smoothing reactor, and the loss of dry smoothing reactor is calculated as follows：
Wherein, P indicates the loss of dry smoothing reactor, PiIndicate the resistive loss of i-th of winding coil, and Pi=Ii 2Ri。
11. appraisal procedure is lost in a kind of dry smoothing reactor, which is characterized in that including：
The loss according to any one of claims 1 to 5 for calculating dry smoothing reactor loss；
Based on etc. heat flow densities and loss threshold value the loss of dry smoothing reactor is assessed.
12. appraisal procedure is lost in dry smoothing reactor according to claim 11, which is characterized in that it is described based on etc. heat
Current density and loss threshold value carry out assessment to the loss of dry smoothing reactor and include：
Judge whether to meet P≤P simultaneouslyset1With | Pi-Pi-1|≤Pset2, dry smoothing reactor meets the requirements；Otherwise adjustment is each
The number of turns and sectional area of wire of a winding coil, and recalculate resistive loss and the flat wave reactance of dry type of each winding coil
The loss of device, until meeting P≤P simultaneouslyset1With | Pi-Pi-1|≤Pset2Until；
Wherein, Pset1Indicate the loss threshold value of dry smoothing reactor, Pset2Indicate the resistive loss difference threshold of winding coil
Value, Pi-1Indicate the resistive loss of i winding coil.
13. apparatus for evaluating is lost in a kind of dry smoothing reactor, which is characterized in that including：
Loss calculation device as described in claim 6-10 is any；
Evaluation module, for based on etc. heat flow densities and loss threshold value the loss of dry smoothing reactor is assessed.
14. apparatus for evaluating is lost in dry smoothing reactor according to claim 13, which is characterized in that the assessment mould
Block is specifically used for：
Judge whether to meet P≤P simultaneouslyset1With | Pi-Pi-1|≤Pset2, dry smoothing reactor meets the requirements；Otherwise adjustment is each
The number of turns and sectional area of wire of a winding coil, and recalculate resistive loss and the flat wave reactance of dry type of each winding coil
The loss of device, until meeting P≤P simultaneouslyset1With | Pi-Pi-1|≤Pset2Until；Wherein, Pset1Indicate dry smoothing reactor
Threshold value, P is lostset2Indicate the resistive loss difference threshold of winding coil, Pi-1Indicate the resistive loss of i winding coil.
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| CN114864253A (en) * | 2022-04-19 | 2022-08-05 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Manufacturing method of dry type air-core reactor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108875287A (en) * | 2018-08-27 | 2018-11-23 | 云南电网有限责任公司电力科学研究院 | A kind of analysis method and system of reactor complexity |
| CN108875287B (en) * | 2018-08-27 | 2022-09-27 | 云南电网有限责任公司电力科学研究院 | Method and system for analyzing structural complexity of electric reactor |
| CN109254205A (en) * | 2018-09-06 | 2019-01-22 | 国网山东省电力公司淄博供电公司 | The on-line monitoring method and monitoring device of dry-type air-core reactor active power loss |
| CN112052569A (en) * | 2020-08-18 | 2020-12-08 | 保定天威集团特变电气有限公司 | Transformer coil circulating current loss calculation method and device |
| CN112052569B (en) * | 2020-08-18 | 2024-04-05 | 保定天威集团特变电气有限公司 | Method and device for calculating loop current loss of transformer coil |
| CN114864253A (en) * | 2022-04-19 | 2022-08-05 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Manufacturing method of dry type air-core reactor |
| CN114864253B (en) * | 2022-04-19 | 2024-02-13 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Manufacturing method of dry type air-core reactor |
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