CN109188267A - It is a kind of to monitor the device of GIS contact system electric contact failure, method and system - Google Patents
It is a kind of to monitor the device of GIS contact system electric contact failure, method and system Download PDFInfo
- Publication number
- CN109188267A CN109188267A CN201811217033.6A CN201811217033A CN109188267A CN 109188267 A CN109188267 A CN 109188267A CN 201811217033 A CN201811217033 A CN 201811217033A CN 109188267 A CN109188267 A CN 109188267A
- Authority
- CN
- China
- Prior art keywords
- interpolation
- temperature
- contact
- parameter
- gis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The present invention relates to malfunction monitoring technical fields, device, the method and system of a kind of monitoring GIS contact system electric contact failure are provided, device includes the first temperature sensor, second temperature sensor and processor, and the first temperature sensor is used to measure the temperature parameter of installation shell；Second temperature sensor is for obtaining environment temperature；Processor obtains the temperature and environment temperature parameter of installation shell, installation shell temperature rise is calculated simultaneously, and according to the temperature rise of installation shell and pre-set simulation data base being calculated, estimate the parameter value of contact resistance, and the parameter value for the contact resistance that estimation obtains is compared with the resistance threshold of preset contact resistance, judge the electric contact state of GIS contact system, to realize the on-line monitoring to GIS electric contact state, when contact resistance breaks down, the maintenance to GIS contact can be reminded in time.
Description
Technical field
The present invention relates to malfunction monitoring technical field, specially a kind of device for monitoring GIS contact system electric contact failure,
Method and system.
Background technique
Gas-insulated metal enclosed switchgear (GIS) is by breaker, disconnecting switch, earthing switch, electric current and mutual induction of voltage
Device, arrester and connection bus etc. are enclosed in metal shell, and the SF6 gas for being filled with different air pressures forms.
The electrical contact portion of the contact system of breaker and disconnecting switch in GIS can be silver-plated to reduce contact resistance.
However as the increase of number of operations, silver coating is easy to fall off, and causes dynamic and static contact bad, and then lead to contact resistance
It greatly increases, seriously generates heat so as to cause gas-insulated metal enclosed switchgear, when calorific value reaches a certain level, false tripping occur
Lock accident seriously affects the safe and stable operation of electric system.
Summary of the invention
In order to overcome the defect of the prior art as indicated above, the present inventor has made intensive studies this, is paying
After a large amount of creative works, so as to complete the present invention.
Specifically, the technical problems to be solved by the present invention are: providing a kind of monitoring GIS contact system electric contact failure
Device, it is intended to solve in the prior art silver coating be easy to fall off, cause dynamic and static contact bad, increase contact resistance, lead
It causes gas-insulated metal enclosed switchgear seriously to generate heat, mistrip accident occurs, seriously affect the safety and stability fortune of electric system
Capable technical problem.
In order to solve the above technical problems, the technical scheme is that
A kind of device monitoring GIS contact system electric contact failure, including the first temperature sensor, second temperature sensor
And processor, in which:
First temperature sensor is positioned close on the installation shell of the GIS contact system setting contact resistance,
For measuring the temperature parameter of the installation shell；
The second temperature sensor is for obtaining environment temperature；
The processor is connect with first temperature sensor, second temperature sensor respectively, for obtaining described
The temperature and the collected environment temperature parameter of second temperature sensor of the collected installation shell of one temperature sensor,
Installation shell temperature rise is calculated simultaneously, and according to the installation shell temperature rise and pre-set emulation data being calculated
It estimates the parameter value of the contact resistance, and the parameter value for the contact resistance that estimation obtains is connect with preset in library
The resistance threshold of electric shock resistance is compared, and judges the electric contact state of the GIS contact system, and report is exported when electric contact failure
Alert information.
As an improvement scheme, the processor estimates the mode of the parameter value of the contact resistance using following two
First three point interpolation formula:
Wherein, in formula: w (u, v) is interpolation point, and the nodal value in the direction x is xi、xk, i=p, p+1, p+2；K=p, p+1, p+
2；The nodal value in the direction k ≠ i, y is yj、yl, j=q, q+1, q+2；L=q, q+1, q+2；L ≠ j, node (xi,yj) at it is corresponding
Functional value is z (i, j), i=p, p+1, p+2；J=q, q+1, q+2, ∑ represent summation, and ∏ represents quadrature.
As an improvement scheme, the simulation data base is for recording environment temperature Tref, installation shell temperature rise w=
△TinCorresponding relationship between contact resistance r, corresponding relationship are the discreet static two-dimensional table of 7*10.
Another object of the present invention is to provide a kind of monitorings of device based on monitoring GIS contact system electric contact failure
The method of GIS contact system electric contact failure, the method includes the following steps:
The temperature parameter and second temperature sensor for obtaining the collected installation shell of the first temperature sensor collect
Environment temperature parameter, and calculate mounting shell body temperature rise △ Tin；
According to the collected environment temperature parameter T of the second sensorref△ is risen with the mounting shell body temperature being calculated
Tin, pre-generated simulation data base is called, and obtain with the environment temperature parameter TrefOn the basis of and with the installation shell
Temperature rise △ TinCorresponding three interpolation knots；
According to pre-generated binary three point interpolation formula, and three interpolation knots got, calculate contact resistance
Parameter value u=r；
The resistance threshold of the parameter value and preset contact resistance of the contact resistance that estimation obtains is compared
Compared with judging the electric contact state of the GIS contact system；
When the electrical contact for determining the GIS contact system is in malfunction, warning message is exported.
As an improvement scheme, it is described according to the collected environment temperature parameter T of the second sensorrefAnd meter
Obtained mounting shell body temperature rises △ Tin, pre-generated simulation data base is called, and obtain with the environment temperature parameter Tref
On the basis of and with the mounting shell body temperature rise △ TinThe step of corresponding three interpolation knots specifically include the following steps:
Judge whether interpolation point is the interpolation knot recorded in the simulation data base；
When interpolation point is the interpolation knot recorded in the simulation data base, then with the environment temperature parameter TrefFor
Benchmark chooses the mounting shell body temperature and rises △ TinTwo interpolation knots of place bound and with the mounting shell body temperature rise △
TinNearest interpolation knot is three interpolation knots chosen；
When interpolation point is not the interpolation knot recorded in the simulation data base, then interpolation point itself and interpolation are chosen
Two interpolation knots of bound where point are three interpolation knots chosen.
As an improvement scheme, the method also includes following step:
The binary three point interpolation formula of the parameter value of the pre-generated estimation contact resistance, the binary three point interpolation are public
Formula are as follows:
Wherein, in formula: w (u, v) is interpolation point, and the nodal value in the direction x is xi、xk, i=p, p+1, p+2；K=p, p+1, p+
2；The nodal value in the direction k ≠ i, y is yj、yl, j=q, q+1, q+2；L=q, q+1, q+2；L ≠ j, node (xi,yj) at it is corresponding
Functional value is z (i, j), i=p, p+1, p+2；J=q, q+1, q+2, ∑ represent summation, and ∏ represents quadrature；
The resistance threshold of pre-generated contact resistance.
As an improvement scheme, the simulation data base is for recording environment temperature Tref, installation shell temperature rise w=
△TinCorresponding relationship between contact resistance r, corresponding relationship are the discreet static two-dimensional table of 7*10.
Another object of the present invention is to provide a kind of monitorings of method based on monitoring GIS contact system electric contact failure
The system of GIS contact system electric contact failure, the system comprises:
Temperature parameter obtains module, connect respectively with the first temperature sensor and second temperature sensor, for acquisition the
The collected environment temperature ginseng of temperature parameter and second temperature sensor of the collected installation shell of one temperature sensor
Number；
Shell temperature rise computing module, the temperature for obtaining the installation shell that module is got according to the temperature parameter are joined
Several and environment temperature parameter calculates mounting shell body temperature and rises △ Tin；
Interpolation knot obtains module, for according to the collected environment temperature parameter T of the second sensorrefAnd calculating
Obtained mounting shell body temperature rises △ Tin, pre-generated simulation data base is called, and obtain with the environment temperature parameter TrefFor
Benchmark and with the mounting shell body temperature rise △ TinCorresponding three interpolation knots；
Contact resistance parameter value calculation module, the binary three point interpolation formula pre-generated for basis, and get
Three interpolation knots, calculate the parameter value u=r of contact resistance；
Contrast judgement module, for that will estimate the parameter value and preset contact resistance of the obtained contact resistance
Resistance threshold be compared, judge the electric contact state of the GIS contact system；
Warning message output module, for exporting when the electrical contact for determining the GIS contact system is in malfunction
Warning message.
As an improvement scheme, the interpolation knot obtains module and specifically includes:
Interpolation knot judgment module, for judging whether interpolation point is the interpolation knot recorded in the simulation data base；
First choose module, for when interpolation point be the simulation data base in record interpolation knot when, then with described
Environment temperature parameter TrefOn the basis of, it chooses the mounting shell body temperature and rises △ TinTwo interpolation knots of place bound and with institute
It states mounting shell body temperature and rises △ TinNearest interpolation knot is three interpolation knots chosen；
Second chooses module, for when interpolation point is not the interpolation knot recorded in the simulation data base, then choosing
Two interpolation knots of bound where interpolation point itself and interpolation point are three interpolation knots chosen.
As an improvement scheme, the system also includes:
Formula generation module, the binary three point interpolation formula of the parameter value for the pre-generated estimation contact resistance,
The binary three point interpolation formula are as follows:
Wherein, in formula: w (u, v) is interpolation point, and the nodal value in the direction x is xi、xk, i=p, p+1, p+2；K=p, p+1, p+
2；The nodal value in the direction k ≠ i, y is yj、yl, j=q, q+1, q+2；L=q, q+1, q+2；L ≠ j, node (xi,yj) at it is corresponding
Functional value is z (i, j), i=p, p+1, p+2；J=q, q+1, q+2, ∑ represent summation, and ∏ represents quadrature；
Resistance threshold generation module, for pre-generating the resistance threshold of contact resistance；
The simulation data base is for recording environment temperature Tref, installation shell temperature rise w=△ TinBetween contact resistance r
Corresponding relationship, corresponding relationship be 7*10 discreet static two-dimensional table.
In embodiments of the present invention, the device for monitoring GIS contact system electric contact failure includes the first temperature sensor, the
Two temperature sensors and processor, the first temperature sensor are positioned close to the peace of the GIS contact system setting contact resistance
On casing；Second temperature sensor is for obtaining environment temperature；It is collected described that processor obtains the first temperature sensor
The temperature and the collected environment temperature parameter of second temperature sensor of shell are installed, while calculating installation shell temperature rise, and
According to the installation shell temperature rise being calculated and pre-set simulation data base, the parameter of the contact resistance is estimated
Value, and the parameter value for the contact resistance that estimation obtains is compared with the resistance threshold of preset contact resistance,
The electric contact state of GIS contact system is judged, so that the on-line monitoring to GIS electric contact state is realized, when contact resistance occurs
When failure, the maintenance to GIS contact can be reminded in time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the device of monitoring GIS contact system electric contact failure provided by the invention；
Fig. 2 is the implementation flow chart of the method for monitoring GIS contact system electric contact failure provided by the invention；
Fig. 3 is the structural block diagram of the system of monitoring GIS contact system electric contact failure provided by the invention.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for
Clearly illustrate technical solution of the present invention, therefore be only used as example, and cannot be used as a limitation and limit protection model of the invention
It encloses.
Fig. 1 shows the structural schematic diagram of the device of monitoring GIS contact system electric contact failure provided by the invention, in order to
Convenient for explanation, part related to the embodiment of the present invention is only gived in figure.
The device for monitoring GIS contact system electric contact failure includes the first temperature sensor 1,2 and of second temperature sensor
Processor 3, in which:
First temperature sensor 1 is positioned close to the installation shell 4 of the GIS contact system setting contact resistance
On, for measuring the temperature parameter of the installation shell 4；
The second temperature sensor 2 is for obtaining environment temperature；
The processor 3 is connect, for obtaining respectively with first temperature sensor 1, second temperature sensor 2
State the temperature and the collected environment temperature of second temperature sensor 2 of the collected installation shell of the first temperature sensor 1
Parameter is spent, while calculating installation shell temperature rise, and according to the installation shell temperature rise that is calculated and pre-set imitative
True data library, estimates the parameter value of the contact resistance, and by the parameter value for the contact resistance that estimation obtains with set in advance
The resistance threshold of fixed contact resistance is compared, and the electric contact state of the GIS contact system is judged, when electric contact failure
Export warning message.
In this embodiment, it is ± 0.3K's that precision, which can be selected, in above-mentioned first temperature sensor 1 and second temperature sensor 2
Pt100 platinum resistance temperature sensor, naturally it is also possible to use other models, details are not described herein.
In embodiments of the present invention, the processor 3 estimates the mode of the parameter value of the contact resistance using following two
First three point interpolation formula:
Wherein, in formula: w (u, v) is interpolation point, and the nodal value in the direction x is xi、xk, i=p, p+1, p+2；K=p, p+1, p+
2；The nodal value in the direction k ≠ i, y is yj、yl, j=q, q+1, q+2；L=q, q+1, q+2；L ≠ j, node (xi,yj) at it is corresponding
Functional value is z (i, j), i=p, p+1, p+2；J=q, q+1, q+2, ∑ represent summation, and ∏ represents quadrature.
Wherein, which is that a kind of calculating of the parameter value of contact resistance is realized, naturally it is also possible to be adopted
With other interpolation formulas, which is pre-configured in processor, obtains when from above-mentioned simulation data base
To after corresponding three interpolation knots, the formula can be inserted in and calculated, the resistance value of contact resistance is calculated, to carry out
Subsequent judgement.
In this embodiment, above-mentioned simulation data base is for recording environment temperature Tref, installation shell temperature rise w=△ TinWith
Corresponding relationship between contact resistance r, corresponding relationship are the discreet static two-dimensional table of 7*10, can use following table:
As seen from the table, temperature rise test or essence are carried out under different environment temperatures by the model machine to different contact resistances
Quasi- simulation calculation work, the available environment temperature T of differencerefFor -20 DEG C, -10 DEG C, 0 DEG C, 10 DEG C, 20 DEG C, 30 DEG C, 40 DEG C,
Contact resistance r size be respectively 5 μ Ω, 15 μ Ω, 25 μ Ω, 50 μ Ω, 70 μ Ω, 100 μ Ω, 130 μ Ω, 160 μ Ω, 200 μ Ω,
250 μ Ω corresponding shell temperature rise △ T at present, will obtain 7 × 10 discreet static two-dimensional tables.
In embodiments of the present invention, GIS is in normal operation, i.e. breaker and disconnecting switch in coincidence,
When electric contact failure occurs for the breaker in GIS and the contact system of disconnecting switch, contact resistance can become larger, and generate heat at contact
Amount can increase severely, and part calorific value is transmitted to GIS metal shell under the action of thermal convection and heat radiation, and then can cause shell
Temperature increases, and for the single-phase circuit breaker in 110kV GIS, can exist between moving contact and static contact and spring touch finger and contact electricity
Resistance, contact resistance is respectively 5 μ Ω or so at two under normal circumstances, and the first temperature sensor is fixed on metal shell appropriate location,
Real-time monitoring installation place temperature rise (installation place temperature-environment temperature), and mounting shell body temperature liter is transferred to processor and is handled,
The size for estimating contact resistance, judges the electric contact state of contact system.
Fig. 2 shows the implementation flow chart of the method for monitoring GIS contact system electric contact failure provided by the invention, tools
Body includes the following steps:
In step s101, the temperature parameter and the second temperature of the collected installation shell of the first temperature sensor are obtained
The collected environment temperature parameter of sensor is spent, and calculates mounting shell body temperature and rises △ Tin。
In step s 102, according to the collected environment temperature parameter T of the second sensorrefWith the peace being calculated
Fill shell temperature rise △ Tin, pre-generated simulation data base is called, and obtain with the environment temperature parameter TrefOn the basis of and with
The mounting shell body temperature rises △ TinCorresponding three interpolation knots.
In step s 103, according to pre-generated binary three point interpolation formula, and three interpolation knots got,
Calculate the parameter value u=r of contact resistance.
In step S104, the parameter value for the contact resistance that estimation is obtained and the electricity of preset contact resistance
Resistance threshold value is compared, and judges the electric contact state of the GIS contact system.
In step s105, when the electrical contact for determining the GIS contact system is in malfunction, alarm signal is exported
Breath.
When the electrical contact for determining GIS contact system is in normal operating condition, then S101 is returned to step, continues to adopt
Collect temperature parameter, details are not described herein.
In embodiments of the present invention, above-mentioned steps: according to the collected environment temperature parameter T of the second sensorrefWith
The mounting shell body temperature being calculated rises △ Tin, pre-generated simulation data base is called, and obtain with the environment temperature parameter
TrefOn the basis of and with the mounting shell body temperature rise △ TinThe step of corresponding three interpolation knots specifically include the following steps:
(1) judge whether interpolation point is the interpolation knot recorded in the simulation data base；
(2) when interpolation point is the interpolation knot recorded in the simulation data base, then with the environment temperature parameter Tref
On the basis of, it chooses the mounting shell body temperature and rises △ TinTwo interpolation knots of place bound and with the mounting shell body temperature rise △
TinNearest interpolation knot is three interpolation knots chosen；
(3) when interpolation point is not the interpolation knot recorded in the simulation data base, then choose interpolation point itself and
Two interpolation knots of bound where interpolation point are three interpolation knots chosen.
In this embodiment, interpolation knot, which is chosen, depends on above-mentioned simulation data base, naturally it is also possible to other modes are used,
Interpolation knot is chosen, details are not described herein.
In embodiments of the present invention, it is also necessary to execute following step:
The binary three point interpolation formula of the parameter value of the pre-generated estimation contact resistance, the binary three point interpolation are public
Recorded in the above-mentioned embodiment shown in FIG. 1 of the particular content of formula, details are not described herein；
The resistance threshold of pre-generated contact resistance, the resistance threshold is as a judgment basis.
In this embodiment, the content of above-mentioned simulation data base is as recorded in above-described embodiment, and details are not described herein.
Fig. 3 shows the structural block diagram of the system of monitoring GIS contact system electric contact failure provided by the invention, in order to just
Part related to the embodiment of the present invention is only gived in explanation, figure.
Monitoring GIS contact system electric contact failure system include:
Temperature parameter obtains module 11, connect respectively with the first temperature sensor and second temperature sensor, for obtaining
The collected environment temperature ginseng of temperature parameter and second temperature sensor of the collected installation shell of first temperature sensor
Number；
Shell temperature rise computing module 12, for obtaining the temperature for the installation shell that module is got according to the temperature parameter
Parameter and environment temperature parameter calculate mounting shell body temperature and rise △ Tin；
Interpolation knot obtains module 13, for according to the collected environment temperature parameter T of the second sensorrefAnd meter
Obtained mounting shell body temperature rises △ Tin, pre-generated simulation data base is called, and obtain with the environment temperature parameter Tref
On the basis of and with the mounting shell body temperature rise △ TinCorresponding three interpolation knots；
Contact resistance parameter value calculation module 14, for according to pre-generated binary three point interpolation formula, and acquisition
Three interpolation knots arrived, calculate the parameter value u=r of contact resistance；
Contrast judgement module 15, for that will estimate that the parameter value of the obtained contact resistance contacts electricity with preset
The resistance threshold of resistance is compared, and judges the electric contact state of the GIS contact system；
Warning message output module 16, it is defeated for when the electrical contact for determining the GIS contact system is in malfunction
Warning message out.
Wherein, the interpolation knot obtains module 13 and specifically includes:
Interpolation knot judgment module 17, for judging whether interpolation point is the interpolation section recorded in the simulation data base
Point；
First choose module 18, for when interpolation point be the simulation data base in record interpolation knot when, then with institute
State environment temperature parameter TrefOn the basis of, it chooses the mounting shell body temperature and rises △ TinTwo interpolation knots of place bound and with
The mounting shell body temperature rises △ TinNearest interpolation knot is three interpolation knots chosen；
Second chooses module 19, for when interpolation point is not the interpolation knot recorded in the simulation data base, then selecting
Two interpolation knots of bound where taking interpolation point itself and interpolation point are three interpolation knots chosen.
In embodiments of the present invention, the system also includes:
The binary three point interpolation of formula generation module 20, the parameter value for the pre-generated estimation contact resistance is public
Formula, the binary three point interpolation formula are as follows:
Wherein, in formula: w (u, v) is interpolation point, and the nodal value in the direction x is xi、xk, i=p, p+1, p+2；K=p, p+1, p+
2；The nodal value in the direction k ≠ i, y is yj、yl, j=q, q+1, q+2；L=q, q+1, q+2；L ≠ j, node (xi,yj) at it is corresponding
Functional value is z (i, j), i=p, p+1, p+2；J=q, q+1, q+2, ∑ represent summation, and ∏ represents quadrature；
Resistance threshold generation module 21, for pre-generating the resistance threshold of contact resistance；
The simulation data base is for recording environment temperature Tref, installation shell temperature rise w=△ TinBetween contact resistance r
Corresponding relationship, corresponding relationship be 7*10 discreet static two-dimensional table.
Wherein, the function of above-mentioned modules is as recorded in above method embodiment, and details are not described herein.
In embodiments of the present invention, the device for monitoring GIS contact system electric contact failure includes the first temperature sensor, the
Two temperature sensors and processor, the first temperature sensor are positioned close to the peace of the GIS contact system setting contact resistance
On casing；Second temperature sensor is for obtaining environment temperature；It is collected described that processor obtains the first temperature sensor
The temperature and the collected environment temperature parameter of second temperature sensor of shell are installed, while calculating installation shell temperature rise, and
According to the installation shell temperature rise being calculated and pre-set simulation data base, the parameter of the contact resistance is estimated
Value, and the parameter value for the contact resistance that estimation obtains is compared with the resistance threshold of preset contact resistance,
The electric contact state of GIS contact system is judged, so that the on-line monitoring to GIS electric contact state is realized, when contact resistance occurs
When failure, the maintenance to GIS contact can be reminded in time；Using shell temperature rise data monitoring electric contact state, monitored parameters are simple
Reliably, and monitoring process will not the normal operatings such as switch closing and switch opening to GIS impact.The design of this method only only used
Temperature sensor and temperature acquisition processing unit, structure is simple, and cost is relatively low.This method section is suitable for all gas insulated metal
The breaker module of enclosed switch and disconnecting switch etc. have the module at electrical contact.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (10)
1. a kind of device for monitoring GIS contact system electric contact failure, which is characterized in that including the first temperature sensor, second
Temperature sensor and processor, in which:
First temperature sensor is positioned close on the installation shell of the GIS contact system setting contact resistance, is used for
Measure the temperature parameter of the installation shell；
The second temperature sensor is for obtaining environment temperature；
The processor is connect with first temperature sensor, second temperature sensor respectively, for obtaining first temperature
The temperature and the collected environment temperature parameter of second temperature sensor of the collected installation shell of sensor are spent, simultaneously
Installation shell temperature rise is calculated, and according to the installation shell temperature rise being calculated and pre-set simulation data base, is estimated
Calculate the parameter value of the contact resistance, and the parameter value and preset contact resistance of the contact resistance that estimation is obtained
Resistance threshold be compared, judge the electric contact state of the GIS contact system, export alarm signal when electric contact failure
Breath.
2. the device of monitoring GIS contact system electric contact failure according to claim 1, which is characterized in that the processing
Device estimates the mode of the parameter value of the contact resistance using following binary three point interpolation formula:
Wherein, in formula: w (u, v) is interpolation point, and the nodal value in the direction x is xi、xk, i=p, p+1, p+2；K=p, p+1, p+2；k
The nodal value in the direction ≠ i, y is yj、yl, j=q, q+1, q+2；L=q, q+1, q+2；L ≠ j, node (xi,yj) at corresponding letter
Numerical value is z (i, j), i=p, p+1, p+2；J=q, q+1, q+2, ∑ represent summation, and ∏ represents quadrature.
3. the device of monitoring GIS contact system electric contact failure according to claim 2, which is characterized in that the emulation
Database is for recording environment temperature Tref, installation shell temperature rise w=△ TinCorresponding relationship between contact resistance r corresponds to
Relationship is the discreet static two-dimensional table of 7*10.
4. a kind of monitoring GIS contact system of the device based on monitoring GIS contact system electric contact failure described in claim 1
The method of electric contact failure, which is characterized in that the method includes the following steps:
Obtain the temperature parameter and the collected ring of second temperature sensor of the collected installation shell of the first temperature sensor
Border temperature parameter, and calculate mounting shell body temperature and rise △ Tin；
According to the collected environment temperature parameter T of the second sensorref△ T is risen with the mounting shell body temperature being calculatedin, adjust
With pre-generated simulation data base, and obtain with the environment temperature parameter TrefOn the basis of and with the mounting shell body temperature liter
△TinCorresponding three interpolation knots；
According to pre-generated binary three point interpolation formula, and three interpolation knots got, calculate the ginseng of contact resistance
Numerical value u=r；
The parameter value for the contact resistance that estimation obtains is compared with the resistance threshold of preset contact resistance, is sentenced
Break the electric contact state of the GIS contact system；
When the electrical contact for determining the GIS contact system is in malfunction, warning message is exported.
5. the method for monitoring GIS contact system electric contact failure according to claim 4, which is characterized in that the basis
The collected environment temperature parameter T of second sensorref△ T is risen with the mounting shell body temperature being calculatedin, call pre- Mr.
At simulation data base, and obtain with the environment temperature parameter TrefOn the basis of and with the mounting shell body temperature rise △ TinRelatively
The step of three interpolation knots answered specifically include the following steps:
Judge whether interpolation point is the interpolation knot recorded in the simulation data base；
When interpolation point is the interpolation knot recorded in the simulation data base, then with the environment temperature parameter TrefOn the basis of,
It chooses the mounting shell body temperature and rises △ TinTwo interpolation knots of place bound and with the mounting shell body temperature rise △ TinRecently
Interpolation knot be choose three interpolation knots；
When interpolation point is not the interpolation knot recorded in the simulation data base, then interpolation point itself and interpolation point institute are chosen
Two interpolation knots of bound be choose three interpolation knots.
6. the method for monitoring GIS contact system electric contact failure according to claim 5, which is characterized in that the method
Further include following step:
The binary three point interpolation formula of the parameter value of the pre-generated estimation contact resistance, the binary three point interpolation formula
Are as follows:
Wherein, in formula: w (u, v) is interpolation point, and the nodal value in the direction x is xi、xk, i=p, p+1, p+2；K=p, p+1, p+2；k
The nodal value in the direction ≠ i, y is yj、yl, j=q, q+1, q+2；L=q, q+1, q+2；L ≠ j, node (xi,yj) at corresponding letter
Numerical value is z (i, j), i=p, p+1, p+2；J=q, q+1, q+2, ∑ represent summation, and ∏ represents quadrature；
The resistance threshold of pre-generated contact resistance.
7. the method for monitoring GIS contact system electric contact failure according to claim 5, which is characterized in that the emulation
Database is for recording environment temperature Tref, installation shell temperature rise w=△ TinCorresponding relationship between contact resistance r corresponds to
Relationship is the discreet static two-dimensional table of 7*10.
8. a kind of monitoring GIS contact system of the method based on monitoring GIS contact system electric contact failure as claimed in claim 4
The system of electric contact failure, which is characterized in that the system comprises:
Temperature parameter obtains module, connect respectively with the first temperature sensor and second temperature sensor, for obtaining the first temperature
Spend the temperature parameter and the collected environment temperature parameter of second temperature sensor of the collected installation shell of sensor；
Shell temperature rise computing module, for according to the temperature parameter obtain module get installation shell temperature parameter and
Environment temperature parameter calculates mounting shell body temperature and rises △ Tin；
Interpolation knot obtains module, for according to the collected environment temperature parameter T of the second sensorrefBe calculated
Mounting shell body temperature rise △ Tin, pre-generated simulation data base is called, and obtain with the environment temperature parameter TrefOn the basis of
And △ T is risen with the mounting shell body temperatureinCorresponding three interpolation knots；
Contact resistance parameter value calculation module, for according to pre-generated binary three point interpolation formula, and get three
A interpolation knot calculates the parameter value u=r of contact resistance；
Contrast judgement module, for that will estimate the parameter value of the obtained contact resistance and the electricity of preset contact resistance
Resistance threshold value is compared, and judges the electric contact state of the GIS contact system；
Warning message output module, for when the electrical contact for determining the GIS contact system is in malfunction, output to be alarmed
Information.
9. the system of monitoring GIS contact system electric contact failure according to claim 8, which is characterized in that the interpolation
Node obtains module and specifically includes:
Interpolation knot judgment module, for judging whether interpolation point is the interpolation knot recorded in the simulation data base；
First choose module, for when interpolation point be the simulation data base in record interpolation knot when, then with the environment
Temperature parameter TrefOn the basis of, it chooses the mounting shell body temperature and rises △ TinTwo interpolation knots of place bound and with the peace
Fill shell temperature rise △ TinNearest interpolation knot is three interpolation knots chosen；
Second chooses module, for when interpolation point is not the interpolation knot recorded in the simulation data base, then choosing interpolation
Two interpolation knots of bound where point itself and interpolation point are three interpolation knots chosen.
10. the system of monitoring GIS contact system electric contact failure according to claim 9, which is characterized in that the system
Further include:
Formula generation module, the binary three point interpolation formula of the parameter value for the pre-generated estimation contact resistance are described
Binary three point interpolation formula are as follows:
Wherein, in formula: w (u, v) is interpolation point, and the nodal value in the direction x is xi、xk, i=p, p+1, p+2；K=p, p+1, p+2；k
The nodal value in the direction ≠ i, y is yj、yl, j=q, q+1, q+2；L=q, q+1, q+2；L ≠ j, node (xi,yj) at corresponding letter
Numerical value is z (i, j), i=p, p+1, p+2；J=q, q+1, q+2, ∑ represent summation, and ∏ represents quadrature；
Resistance threshold generation module, for pre-generating the resistance threshold of contact resistance；
The simulation data base is for recording environment temperature Tref, installation shell temperature rise w=△ TinPair between contact resistance r
It should be related to, corresponding relationship is the discreet static two-dimensional table of 7*10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811217033.6A CN109188267A (en) | 2018-10-18 | 2018-10-18 | It is a kind of to monitor the device of GIS contact system electric contact failure, method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811217033.6A CN109188267A (en) | 2018-10-18 | 2018-10-18 | It is a kind of to monitor the device of GIS contact system electric contact failure, method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109188267A true CN109188267A (en) | 2019-01-11 |
Family
ID=64946110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811217033.6A Pending CN109188267A (en) | 2018-10-18 | 2018-10-18 | It is a kind of to monitor the device of GIS contact system electric contact failure, method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109188267A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111090007A (en) * | 2019-12-18 | 2020-05-01 | 国网上海市电力公司 | Memory, conductive loop electric contact state evaluation method, device and equipment |
| CN112347642A (en) * | 2020-11-06 | 2021-02-09 | 广东电网有限责任公司佛山供电局 | Method and system for selecting sample data set in GIS circuit breaker contact temperature calculation |
| CN116699387A (en) * | 2023-08-03 | 2023-09-05 | 德力西电气有限公司 | Electric abrasion detection method of circuit breaker |
| WO2023246455A1 (en) * | 2022-06-23 | 2023-12-28 | 华能龙开口水电有限公司 | Online monitoring method for contact resistance of gcb of large generator, and storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243285A (en) * | 2011-05-06 | 2011-11-16 | 厦门Abb开关有限公司 | Fault detection apparatus based on temperature and current analyses, and method thereof |
| CN102778626A (en) * | 2012-08-14 | 2012-11-14 | 广东电网公司佛山供电局 | Method and device for detecting overheat faults of GIS (Gas Insulated Switchgear) busbar joints |
| CN103616608A (en) * | 2013-12-10 | 2014-03-05 | 国家电网公司 | Intelligent monitoring device andg method for electric contact state of gas-insulation switch contactor |
| US20150012145A1 (en) * | 2008-02-19 | 2015-01-08 | Simply Automated Incorporated | Intelligent circuit breaker apparatus and methods |
| CN105092050A (en) * | 2015-08-13 | 2015-11-25 | 国家电网公司 | Method and device for detecting overheat fault of GIS (Gas Insulated Switchgear) internal conductors |
| CN105842565A (en) * | 2016-05-16 | 2016-08-10 | 上海欧忆智能网络有限公司 | Electrical apparatus heat fault on-line monitoring system and device |
| CN107561397A (en) * | 2017-08-10 | 2018-01-09 | 广州供电局有限公司 | The electric contact state detection method and system of GIS contact systems |
| CN108181000A (en) * | 2018-01-02 | 2018-06-19 | 国网上海市电力公司 | A kind of contact of breaker detection method for temperature rise based on GIS housing thermometrics |
-
2018
- 2018-10-18 CN CN201811217033.6A patent/CN109188267A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150012145A1 (en) * | 2008-02-19 | 2015-01-08 | Simply Automated Incorporated | Intelligent circuit breaker apparatus and methods |
| CN102243285A (en) * | 2011-05-06 | 2011-11-16 | 厦门Abb开关有限公司 | Fault detection apparatus based on temperature and current analyses, and method thereof |
| CN102778626A (en) * | 2012-08-14 | 2012-11-14 | 广东电网公司佛山供电局 | Method and device for detecting overheat faults of GIS (Gas Insulated Switchgear) busbar joints |
| CN103616608A (en) * | 2013-12-10 | 2014-03-05 | 国家电网公司 | Intelligent monitoring device andg method for electric contact state of gas-insulation switch contactor |
| CN105092050A (en) * | 2015-08-13 | 2015-11-25 | 国家电网公司 | Method and device for detecting overheat fault of GIS (Gas Insulated Switchgear) internal conductors |
| CN105842565A (en) * | 2016-05-16 | 2016-08-10 | 上海欧忆智能网络有限公司 | Electrical apparatus heat fault on-line monitoring system and device |
| CN107561397A (en) * | 2017-08-10 | 2018-01-09 | 广州供电局有限公司 | The electric contact state detection method and system of GIS contact systems |
| CN108181000A (en) * | 2018-01-02 | 2018-06-19 | 国网上海市电力公司 | A kind of contact of breaker detection method for temperature rise based on GIS housing thermometrics |
Non-Patent Citations (1)
| Title |
|---|
| 南京航空学院《计算数学》编写组: "《计算方法与算法语言》", 30 November 1976 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111090007A (en) * | 2019-12-18 | 2020-05-01 | 国网上海市电力公司 | Memory, conductive loop electric contact state evaluation method, device and equipment |
| CN112347642A (en) * | 2020-11-06 | 2021-02-09 | 广东电网有限责任公司佛山供电局 | Method and system for selecting sample data set in GIS circuit breaker contact temperature calculation |
| WO2023246455A1 (en) * | 2022-06-23 | 2023-12-28 | 华能龙开口水电有限公司 | Online monitoring method for contact resistance of gcb of large generator, and storage medium |
| CN116699387A (en) * | 2023-08-03 | 2023-09-05 | 德力西电气有限公司 | Electric abrasion detection method of circuit breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109188267A (en) | It is a kind of to monitor the device of GIS contact system electric contact failure, method and system | |
| CN107561397B (en) | Method and system for detecting electrical contact state of GIS contact system | |
| CN102788645B (en) | Infrared monitoring system for temperature rise of electric connecting point of electrical equipment and monitoring method | |
| CN104215901A (en) | High voltage circuit breaker arc contact fault diagnosis method | |
| CN109613426B (en) | Aging diagnosis method for plum blossom contact of high-voltage circuit breaker | |
| CN112684232B (en) | Intelligent ammeter capable of preventing electricity theft | |
| CN106773993A (en) | Field data acquiring terminal and system | |
| US8981895B2 (en) | Method and system for intrusion detection in networked control systems | |
| CN109477869A (en) | The diagnostic device of motor | |
| US11644492B2 (en) | Electricity meter thermal performance monitoring | |
| CN110553801B (en) | Multifunctional gas density monitor and system based on edge calculation | |
| CN110411894B (en) | Gas density monitoring system | |
| CN110568351A (en) | High-precision gas density monitor and monitoring system based on edge calculation | |
| US4259861A (en) | Method and apparatus for determining whether a fluid is leaking | |
| CN114002469A (en) | Electricity stealing detection method and device and electricity stealing detector | |
| CN107222366A (en) | Inspection shaft method of environmental monitoring, equipment and system based on low-power consumption wide area network | |
| CN111697689A (en) | Power supply equipment hidden fault monitoring method and system | |
| CN110389287A (en) | A kind of method for early warning and system of the electric discharge of high-tension switch cabinet interior insulation | |
| CN113432854B (en) | High-voltage switch cabinet tulip contact state monitoring method, system, equipment and medium | |
| CN110441681A (en) | A kind of accurate teletransmission gas density relay of high, middle pressure and gas density monitor system | |
| CN109697151A (en) | A kind of method and system that the anti-short circuit of server dorsulum is burnt | |
| CN109254216A (en) | A kind of AD method of calibration and system for measuring and controlling protective device | |
| CN110954819B (en) | Gas relay state identification method based on baffle corner and heavy gas signal | |
| CN113156304A (en) | Switch equipment detection method and device | |
| CN110658414A (en) | Power electronic parametric fault detection method based on model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190111 |