CN108879754A - Reduce the FCL Optimal Configuration Method and system of secondary commutation failure risk - Google Patents
Reduce the FCL Optimal Configuration Method and system of secondary commutation failure risk Download PDFInfo
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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
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
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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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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The invention discloses a kind of fault current limiter Optimal Configuration Method for reducing secondary commutation failure risk and systems.This method includes：Voltage interaction factor between multiple adjacent direct current branch is chosen, with the minimum target of voltage interaction factor, determines objective function；Using the fault current limiter for installing a fault current limiter and at most set-mounted quantity every time as constraint condition, the installation site and current-limiting reactor value of fault current limiter are determined；After the installation site and current-limiting reactor value of fault current limiter determine, calculate voltage interaction factor between the adjacent direct current branch of Multi-infeed HVDC system, it jumps to and chooses voltage interaction factor between multiple adjacent direct current branch, with the minimum target of voltage interaction factor, determine objective function step, until fault current limiter reaches setting installation number, stop iteration.Method and system provided by the invention can satisfy the configuration scheme of the FCL of different commutation failure Risk Constraint conditions.
Description
Technical field
The present invention relates to high voltage power transmission fields, optimize more particularly to a kind of FCL for reducing secondary commutation failure risk
Configuration method and system.
Background technique
In Multi-infeed HVDC (Multi-Infeed High-Voltage Direct Current, MI-
HVDC) in system, secondary commutation failure refers to the Inverter Station in MI-HVDC system because successively leading by fault in ac transmission system
The secondary dropping shock of commutation voltage caused by commutation failure occurs for the commutation voltage dropping shock of cause and adjacent Inverter Station, and occurs
Commutation failure (FCL) carries out the related of the prevention of commutation failure phenomenon and records.
Summary of the invention
The object of the present invention is to provide a kind of FCL Optimal Configuration Method for reducing secondary commutation failure risk and system,
It can satisfy the configuration scheme of the FCL of different commutation failure Risk Constraint conditions.
To achieve the above object, the present invention provides following schemes：
A kind of fault current limiter Optimal Configuration Method reducing secondary commutation failure risk, the method includes：
Voltage interaction factor between multiple adjacent direct current branch is chosen, with the minimum mesh of voltage interaction factor
Mark, determines objective function；
Using install every time a fault current limiter and at most set-mounted quantity fault current limiter as constraint condition, really
Determine the installation site and current-limiting reactor value of fault current limiter；
After the installation site and current-limiting reactor value of fault current limiter determine, Multi-infeed HVDC system phase is calculated
Voltage interaction factor between adjacent direct current branch, jump to choose between multiple adjacent direct current branch voltage reciprocation because
Son determines objective function step with the minimum target of voltage interaction factor, until fault current limiter reaches setting installation number
Amount stops iteration.
Optionally, described with the minimum target of voltage interaction factor, it determines objective function, specifically includes：
Determine multi-goal optimizing functionWherein, i indicates the number of optimization aim,WithIndicate the number of two adjacent direct current branch,Indicate branchAnd branchBetween
Voltage interaction factor；
According to multi-goal optimizing function, objective function is determinedWherein, aiIt indicates's
Weight,After indicating the t-1 times iteration, branchAnd branchVoltage interaction factor.
Optionally, described to be with the fault current limiter for installing a fault current limiter and at most set-mounted quantity every time
Constraint condition determines the installation site and current-limiting reactor value of fault current limiter, specifically includes：
Determine the initial number n of primary iteration number t=1 and fault current limiterFCL=1；
Determine the first constraint conditionWherein, NLFor the quantity of branch, branch information matrix isFor 0,1 variable, lcIndicate the number of fault current limiter pre-selection installation branch,Indicate failure limit
Stream device is installed on the l that pre-selection branch is concentratedcItem branch road, each iteration only determine the installation site of a fault current limiter,
One fault current limiter is only installed,For the l in CLcRow, represents lcThe information of branch,
Respectively indicate lcHeadend node, endpoint node and the branch impedance of branch, Respectively the t times repeatedly
For corresponding nodal impedance matrix ZtOn be located atElement, respectively indicate node's
Self-impedance, nodeSelf-impedance, nodeAnd nodeBetween mutual impedance,
Respectively ZtOn be located at Element, respectively indicate nodeAnd nodeIt is mutual
Impedance, nodeAnd nodeMutual impedance, nodeAnd nodeMutual impedance, nodeAnd nodeMutual impedance；
Determine the second constraint conditionIts
In,
Determine third constraint conditionWherein, C=z1+z2-2z3+zFCL, zFCL=-(z4 2+z4Jx)/(jx), x are fault current limiter
Reactance value, j is imaginary symbols；
Determine the 4th constraint condition x≤xmax, wherein x is the installation number of fault current limiter, xmaxMost for fault current limiter
Mostly set-mounted quantity.
It is described the present invention also provides a kind of fault current limiter Optimizing Configuration System for reducing secondary commutation failure risk
System includes：
Objective function determining module, for choosing voltage interaction factor between multiple adjacent direct current branch, with voltage
The minimum target of interaction factor, determines objective function；
Fault current limiter determining module, for install fault current limiter and at most set-mounted quantity every time
Fault current limiter is constraint condition, determines the installation site and current-limiting reactor value of fault current limiter；
Voltage interaction factor computing module is determined for the installation site and current-limiting reactor value in fault current limiter
Afterwards, voltage interaction factor between the adjacent direct current branch of Multi-infeed HVDC system is calculated, it is multiple to jump to selection
Voltage interaction factor between adjacent direct current branch determines that objective function walks with the minimum target of voltage interaction factor
Suddenly, until fault current limiter reaches setting installation number.
Optionally, the objective function determining module, specifically includes：
Multi-goal optimizing function determination unit, for determining multi-goal optimizing functionWherein, i
Indicate the number of optimization aim,WithIndicate the number of two adjacent direct current branch,It indicates
BranchAnd branchBetween voltage interaction factor；
Objective function determination unit, for determining objective function according to multi-goal optimizing function
Wherein, aiIt indicatesWeight,After indicating the t-1 times iteration, branchAnd branchVoltage interaction make
Use the factor.
Optionally, the voltage interaction factor computing module, specifically includes：
Primary condition determination unit, for determining the initial number n of primary iteration number t=1 and fault current limiterFCL=
1；
First constraint condition determination unit, for determining the first constraint conditionWherein, NLFor the number of branch
Amount, branch information matrix areFor 0,1 variable, lcIndicate the volume of fault current limiter pre-selection installation branch
Number,Indicate that fault current limiter is installed on the l that pre-selection branch is concentratedcItem branch road, each iteration only determine an event
Hinder the installation site of current limiter, a fault current limiter be only installed,For the l in CLcRow, represents lcThe information of branch,,Respectively indicate lcHeadend node, endpoint node and the branch impedance of branch, Point
It Wei not the corresponding nodal impedance matrix Z of the t times iterationtOn be located atElement, respectively table
Show nodeSelf-impedance, nodeSelf-impedance, nodeAnd nodeBetween mutual impedance,Respectively ZtOn be located at Element,
Respectively indicate nodeAnd nodeMutual impedance, nodeAnd nodeMutual impedance, nodeAnd nodeMutual impedance,
NodeAnd nodeMutual impedance；
Second constraint condition determination unit, for determining the second constraint conditionWherein,
Third constraint condition determination unit, for determining third constraint conditionWherein,C=z1+z2-2z3+zFCL,
zFCL=-(z4 2+z4Jx)/(jx), x are the reactance value of fault current limiter, and j is imaginary symbols；
4th constraint condition determination unit, for determining the 4th constraint condition x≤xmax, wherein x is fault current limiter
Installation number, xmaxFor the at most set-mounted quantity of fault current limiter.
The specific embodiment provided according to the present invention, the invention discloses following technical effects：Reduction provided by the invention
The FCL Optimal Configuration Method and system of secondary commutation failure risk, to minimize MIIF index as target, with the installation of FCL
Cost is constraint, solves the allocation optimum scheme of FCL, is reduced by the MIIF index between adjacent Inverter Station after reduction failure
Secondary commutation failure risk.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the FCL Optimal Configuration Method flow chart that the embodiment of the present invention reduces secondary commutation failure risk；
Fig. 2 is the FCL Optimizing Configuration System structure chart that the embodiment of the present invention reduces secondary commutation failure risk.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of FCL Optimal Configuration Method for reducing secondary commutation failure risk and system,
It can satisfy the configuration scheme of the FCL of different commutation failure Risk Constraint conditions.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is the FCL Optimal Configuration Method flow chart that the embodiment of the present invention reduces secondary commutation failure risk, such as Fig. 1
Shown, the risk of secondary commutation failure occurs for MI-HVDC system and MIIF index is positively correlated, by adjacent inverse after reduction failure
The MIIF index become between station can reduce secondary commutation failure risk.This patent to minimize MIIF index as target, with
The installation cost of FCL is constraint, solves the allocation optimum scheme of FCL.Specific step is as follows：
Step 1：The number of iterations t=1 is initialized, FCL quantity n is installedFCL=1；
Step 2：Seek the objective function of the t times iteration.Calculate secondary commutation failure risk after the t-1 times iteration
Accounting is chosen according to calculated caseA MIIF index is the target of optimization.IfThen without optimization；If
Then the optimization problem is multi-objective optimization question.Shown in objective function such as formula (1).
In formula, i indicates the number of optimization aim,WithIndicate more feed-in interaction factorsThe number of associated twice HVDC.
Step 3：The t times iteration is sought according to the result of the t-1 times iterationThe branch information square of rank
Battle array CL.CL contains NLThe information of branch, its expression formula are as follows：
In formula,It is oneThe row vector of rank, it is the l in CLcRow, represents lcThe letter of row branch
Breath.These information are as lcWhen row branch is selected as the installation site of FCL, calculate necessary to multiple objective functions.'s
Expression formula is as follows：
In formula,Respectively indicate lcThe first and last end node of row branch and branch impedance, The corresponding nodal impedance matrix Z of respectively the t times iterationtOn be located at
Element, respectively indicate nodeSelf-impedance, nodeSelf-impedance, nodeAnd nodeBetween mutual impedance,Respectively ZtOn be located at Element, respectively
Indicate nodeAnd nodeMutual impedance, nodeAnd nodeMutual impedance, nodeAnd nodeMutual impedance, nodeAnd nodeMutual impedance.
Step 4：Solving optimization problem.Multi-objective optimization question single object optimization is converted to by weighting factor method to ask
Topic, objective function are：
In formula, aiIt indicatesWeight,After indicating FCL startingIt is rightVoltage hand over
The interaction factor.
Constraint condition one：
In formula,For 0,1 variable, lcIndicate the number of pre-selection branch,Indicate that FCL is installed on pre-selection branch and concentrates
LcItem branch road should meet formula (5) since each iteration only determines the installation site of a FCL.
Constraint condition two：
The left side of formula (6) is oneThe row vector of rank is acquired by the expression formula on the right of formula (6), and wherein σ is NL
Row vector is tieed up,
Constraint condition three：
Wherein,
C=z1+z2-2z3+zFCL (10)
zFCL=-(z4 2+z4·jx)/(jx) (11)
In formula, x is the reactance value of FCL, and j is imaginary symbols.
Constraint condition four：
x≤xmax (12)
In formula, xmaxFor the upper limit value of x.
The Nonlinear Mixed Integer Programming Problem is solved with the Bonmin in OPTI-Toolbox, available t step changes
The optimal installation site and current-limiting reactor value of FCL during generation.
The Nonlinear Mixed Integer Programming Problem is solved with the Bonmin in OPTI-Toolbox, available t step changes
The optimal installation site and current-limiting reactor value of FCL during generation.
Step 5：nFCL=nFCL+ 1, t=t+1.If nFCL≤nFCL,max, then nodal impedance matrix Z is correctedt, and jump the 2nd
Step.
When power grid operates normally, FCL shows as zero impedance or minimum impedance, almost passes through rated current without loss,
The normal operation of power grid is not influenced；In grid collapses, short circuit current is greater than critical current, time of the FCL in Millisecond
Inside show non-linear high-impedance behavior.
MIIF index is one and is used to describe the interactive index of voltage between adjacent direct current.International conference on large HV electric systems group
Knitting (CIGRE) definition MIIF index is：When change of current bus m puts into symmetrical three-phase reactor, so that the voltage decline 1% of the bus
When, the voltage change ratio of change of current bus n is MIIFn,m.According to definition, MIIFn,mAs shown in formula (13)
In formula, Δ Vm, Δ VnMoment, the voltage decline of the change of current bus m and n are respectively indicated after symmetrical three-phase reactor is put into
Amount.ΔVm, Δ VnValue obtained by emulation testing.MIIFn,mMinimum value be 0, maximum value 1.
According to the definition of MIIF, the calculation formula such as formula (14) of the MIIF index based on node admittance matrix.
In formula, ZnmIndicate the mutual impedance between node n and node m, ZmmIndicate the self-impedance of node m, ZnmAnd ZmmIt is all section
The element of Z in electrical impedance matrix, Z are the inverse of node admittance matrix Y.
The FCL Optimal Configuration Method provided by the invention for reducing secondary commutation failure risk, to minimize MIIF index
For target, be constraint with the installation cost of FCL, solve the allocation optimum scheme of FCL, by reduce after failure adjacent Inverter Station it
Between MIIF index reduce secondary commutation failure risk.
The present invention also provides a kind of fault current limiter Optimizing Configuration Systems for reducing secondary commutation failure risk, such as scheme
Shown in 2, the system comprises：
Objective function determining module 201, for choosing voltage interaction factor between multiple adjacent direct current branch, with electricity
The minimum target of interaction factor is pressed, determines objective function；
Fault current limiter determining module 202, for install a fault current limiter and at most set-mounted number every time
The fault current limiter of amount is constraint condition, determines the installation site and current-limiting reactor value of fault current limiter；
Voltage interaction factor computing module 203, it is true for the installation site and current-limiting reactor value in fault current limiter
After fixed, voltage interaction factor between the adjacent direct current branch of Multi-infeed HVDC system is calculated, it is more to jump to selection
Voltage interaction factor between a adjacent direct current branch determines objective function with the minimum target of voltage interaction factor
Step, until fault current limiter reaches setting installation number.
Wherein, the objective function determining module 201, specifically includes：
Multi-goal optimizing function determination unit, for determining multi-goal optimizing functionWherein, i
Indicate the number of optimization aim,WithIndicate the number of two adjacent direct current branch,It indicates
BranchAnd branchBetween voltage interaction factor；
Objective function determination unit, for determining objective function according to multi-goal optimizing function
Wherein, aiIt indicatesWeight,After indicating the t-1 times iteration, branchAnd branchVoltage reciprocation
The factor.
The voltage interaction factor computing module 202, specifically includes：
Primary condition determination unit, for determining the initial number n of primary iteration number t=1 and fault current limiterFCL=
1；
First constraint condition determination unit, for determining the first constraint conditionWherein, NLFor the number of branch
Amount, branch information matrix areFor 0,1 variable, lcIndicate the volume of fault current limiter pre-selection installation branch
Number,Indicate that fault current limiter is installed on the l that pre-selection branch is concentratedcItem branch road, each iteration only determine a failure
The installation site of current limiter only installs a fault current limiter,For the l in CLcRow, represents lcThe information of branch,
Respectively indicate lcHeadend node, endpoint node and the branch impedance of branch, Respectively the t times repeatedly
For corresponding nodal impedance matrix ZtOn be located atElement, respectively indicate node's
Self-impedance, nodeSelf-impedance, nodeAnd nodeBetween mutual impedance,
Respectively ZtOn be located at Element, respectively indicate nodeAnd nodeMutual resistance
Anti-, nodeAnd nodeMutual impedance, nodeAnd nodeMutual impedance, nodeAnd nodeMutual impedance；
Second constraint condition determination unit, for determining the second constraint conditionWherein,
Third constraint condition determination unit, for determining third constraint conditionWherein,C=z1+z2-2z3+zFCL,
zFCL=-(z4 2+z4Jx)/(jx), x are the reactance value of fault current limiter, and j is imaginary symbols；
4th constraint condition determination unit, for determining the 4th constraint condition x≤xmax, wherein x is fault current limiter
Installation number, xmaxFor the at most set-mounted quantity of fault current limiter.
The FCL Optimizing Configuration System provided by the invention for reducing secondary commutation failure risk, to minimize MIIF index
For target, be constraint with the installation cost of FCL, solve the allocation optimum scheme of FCL, by reduce after failure adjacent Inverter Station it
Between MIIF index reduce secondary commutation failure risk.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For system disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (6)
1. a kind of fault current limiter Optimal Configuration Method for reducing secondary commutation failure risk, which is characterized in that the method
Including：
Voltage interaction factor between multiple adjacent direct current branch is chosen, with the minimum target of voltage interaction factor, really
Set the goal function；
Using the fault current limiter for installing a fault current limiter and at most set-mounted quantity every time as constraint condition, event is determined
Hinder the installation site and current-limiting reactor value of current limiter；
After the installation site and current-limiting reactor value of fault current limiter determine, Multi-infeed HVDC system adjacent straight is calculated
Voltage interaction factor between branch is flowed, jumps to and chooses voltage interaction factor between multiple adjacent direct current branch, with
The minimum target of voltage interaction factor, determines objective function step, until fault current limiter reaches setting installation number, stops
Only iteration.
2. the fault current limiter Optimal Configuration Method according to claim 1 for reducing secondary commutation failure risk, special
Sign is, described with the minimum target of voltage interaction factor, determines objective function, specifically includes：
Determine multi-goal optimizing functionWherein, i indicates the number of optimization aim, WithIndicate the number of two adjacent direct current branch,Indicate branchAnd branchBetween voltage reciprocation
The factor；
According to multi-goal optimizing function, objective function is determinedWherein, aiIt indicatesWeight,After indicating the t-1 times iteration, branchAnd branchVoltage interaction factor.
3. the fault current limiter Optimal Configuration Method according to claim 1 for reducing secondary commutation failure risk, special
Sign is, described to install the fault current limiter an of fault current limiter and at most set-mounted quantity every time as constraint item
Part determines the installation site and current-limiting reactor value of fault current limiter, specifically includes：
Determine the initial number n of primary iteration number t=1 and fault current limiterFCL=1；
Determine the first constraint conditionWherein, NLFor the quantity of branch, branch information matrix is
For 0,1 variable, lcIndicate the number of fault current limiter pre-selection installation branch,Indicate that fault current limiter is installed on pre-selection branch
The l that road is concentratedcItem branch road, each iteration only determine the installation site of a fault current limiter, only one failure limit of installation
Device is flowed,For the l in CLcRow, represents lcThe information of branch, Respectively indicate lcHeadend node, endpoint node and the branch impedance of branch, The corresponding nodal impedance matrix Z of respectively the t times iterationtOn be located at Element, respectively indicate nodeSelf-impedance, nodeSelf-impedance, nodeAnd section
PointBetween mutual impedance,Respectively ZtOn be located atElement, respectively indicate nodeAnd nodeMutual impedance,
NodeAnd nodeMutual impedance, nodeAnd nodeMutual impedance, nodeAnd nodeMutual impedance；
Determine the second constraint condition
Wherein,
Determine third constraint conditionWherein, C=z1+z2-2z3+zFCL, zFCL=-(z4 2+z4Jx)/(jx), x are failure limit
The reactance value of device is flowed, j is imaginary symbols；
Determine the 4th constraint condition x≤xmax, wherein x is the installation number of fault current limiter, xmaxAt most pacify for fault current limiter
Install fixed number amount.
4. a kind of fault current limiter Optimizing Configuration System for reducing secondary commutation failure risk, which is characterized in that the system
Including：
Objective function determining module, for choosing voltage interaction factor between multiple adjacent direct current branch, with voltage interaction
The minimum target of acting factor, determines objective function；
Fault current limiter determining module, for the failure to install a fault current limiter and at most set-mounted quantity every time
Current limiter is constraint condition, determines the installation site and current-limiting reactor value of fault current limiter；
Voltage interaction factor computing module, for counting after the installation site of fault current limiter and current-limiting reactor value determine
Voltage interaction factor between the adjacent direct current branch of Multi-infeed HVDC system is calculated, jumps to and chooses multiple adjacent straights
Voltage interaction factor determines objective function step with the minimum target of voltage interaction factor between stream branch, until
Fault current limiter reaches setting installation number.
5. the fault current limiter Optimizing Configuration System according to claim 4 for reducing secondary commutation failure risk, special
Sign is that the objective function determining module specifically includes：
Multi-goal optimizing function determination unit, for determining multi-goal optimizing functionWherein, i is indicated
The number of optimization aim, WithIndicate the number of two adjacent direct current branch,Indicate branch
And branchBetween voltage interaction factor；
Objective function determination unit, for determining objective function according to multi-goal optimizing functionIts
In, aiIt indicatesWeight,After indicating the t-1 times iteration, branchAnd branchVoltage reciprocation
The factor.
6. the fault current limiter Optimal Configuration Method according to claim 4 for reducing secondary commutation failure risk, special
Sign is that the voltage interaction factor computing module specifically includes：
Primary condition determination unit, for determining the initial number n of primary iteration number t=1 and fault current limiterFCL=1；
First constraint condition determination unit, for determining the first constraint conditionWherein, NLFor the quantity of branch, branch
Information matrix is For 0,1 variable, lcIndicate the number of fault current limiter pre-selection installation branch,Table
Show that fault current limiter is installed on the l that pre-selection branch is concentratedcItem branch road, each iteration only determine the peace of a fault current limiter
Holding position only installs a fault current limiter,For the l in CLcRow, represents lcThe information of branch, Respectively indicate lcHeadend node, endpoint node and the branch impedance of branch, The corresponding nodal impedance matrix Z of respectively the t times iterationtOn be located at Element, respectively indicate nodeSelf-impedance, nodeSelf-impedance, nodeAnd section
PointBetween mutual impedance,Respectively ZtOn be located atElement, respectively indicate nodeAnd nodeMutual impedance,
NodeAnd nodeMutual impedance, nodeAnd nodeMutual impedance, nodeAnd nodeMutual impedance；
Second constraint condition determination unit, for determining the second constraint condition
Wherein,
Third constraint condition determination unit, for determining third constraint conditionWherein,
C=z1+z2-2z3+zFCL, zFCL=-(z4 2+z4Jx)/(jx), x are the reactance value of fault current limiter, and j is imaginary symbols；
4th constraint condition determination unit, for determining the 4th constraint condition x≤xmax, wherein x is the installation of fault current limiter
Quantity, xmaxFor the at most set-mounted quantity of fault current limiter.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110176755A (en) * | 2019-06-18 | 2019-08-27 | 广州供电局有限公司 | A kind of fault current limiter configuration method and device |
| CN111884206A (en) * | 2020-07-15 | 2020-11-03 | 山东大学 | Key line impedance adjusting method and system for inhibiting multi-direct-current commutation failure linkage |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761123A (en) * | 2012-07-11 | 2012-10-31 | 浙江大学 | Multi-infeed HVDC (high-voltage direct current) system partitioning method based on mounting of fault current limiters |
| CN103812129A (en) * | 2014-01-16 | 2014-05-21 | 东北电力大学 | Method for determining commutation failure of multi-infeed direct current power transmission system |
| CN104934982A (en) * | 2015-05-21 | 2015-09-23 | 广东电网有限责任公司电网规划研究中心 | Direct current partitioning method for multi-direct current feed-in system |
| CN105207276A (en) * | 2015-10-10 | 2015-12-30 | 国网技术学院 | Multi-infeed power transmission system fault partition current limiter installation method based on graph theory |
| CN105429187A (en) * | 2015-12-07 | 2016-03-23 | 中国电力科学研究院 | Multi-infeed direct current evaluation method |
| CN105939020A (en) * | 2016-05-14 | 2016-09-14 | 国家电网公司 | Station-configuration method for dynamic reactive compensation apparatus capable of improving multi-feed direct current restoration capability |
| CN106845848A (en) * | 2017-02-03 | 2017-06-13 | 许继电气股份有限公司 | The appraisal procedure and device of reciprocal effect between Multi-infeed HVDC transmission system current conversion station |
| CN108173264A (en) * | 2017-12-29 | 2018-06-15 | 国电南瑞科技股份有限公司 | A kind of Optimal Configuration Method of fault current limiter |
-
2018
- 2018-07-26 CN CN201810835675.6A patent/CN108879754B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761123A (en) * | 2012-07-11 | 2012-10-31 | 浙江大学 | Multi-infeed HVDC (high-voltage direct current) system partitioning method based on mounting of fault current limiters |
| CN103812129A (en) * | 2014-01-16 | 2014-05-21 | 东北电力大学 | Method for determining commutation failure of multi-infeed direct current power transmission system |
| CN104934982A (en) * | 2015-05-21 | 2015-09-23 | 广东电网有限责任公司电网规划研究中心 | Direct current partitioning method for multi-direct current feed-in system |
| CN105207276A (en) * | 2015-10-10 | 2015-12-30 | 国网技术学院 | Multi-infeed power transmission system fault partition current limiter installation method based on graph theory |
| CN105429187A (en) * | 2015-12-07 | 2016-03-23 | 中国电力科学研究院 | Multi-infeed direct current evaluation method |
| CN105939020A (en) * | 2016-05-14 | 2016-09-14 | 国家电网公司 | Station-configuration method for dynamic reactive compensation apparatus capable of improving multi-feed direct current restoration capability |
| CN106845848A (en) * | 2017-02-03 | 2017-06-13 | 许继电气股份有限公司 | The appraisal procedure and device of reciprocal effect between Multi-infeed HVDC transmission system current conversion station |
| CN108173264A (en) * | 2017-12-29 | 2018-06-15 | 国电南瑞科技股份有限公司 | A kind of Optimal Configuration Method of fault current limiter |
Non-Patent Citations (3)
| Title |
|---|
| A. ELMITWALLY: "Restoring recloser-fuse coordination by optimal fault current limiters planning in DG-integrated distribution systems", 《ELECTRICAL POWER AND ENERGY SYSTEMS》 * |
| 徐蔚 等: "基于多馈入交互作用因子的直流分区原则和方法研究", 《电力***保护与控制》 * |
| 邵瑶，汤涌: "采用多馈入交互作用因子判断高压直流***换相失败的方法", 《中国电机工程学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110176755A (en) * | 2019-06-18 | 2019-08-27 | 广州供电局有限公司 | A kind of fault current limiter configuration method and device |
| CN110176755B (en) * | 2019-06-18 | 2021-03-02 | 广州供电局有限公司 | Fault current limiter configuration method and device |
| CN111884206A (en) * | 2020-07-15 | 2020-11-03 | 山东大学 | Key line impedance adjusting method and system for inhibiting multi-direct-current commutation failure linkage |
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