CN106680707A - System, device and method for heavy gas action setting value of double-float gas relay - Google Patents
System, device and method for heavy gas action setting value of double-float gas relay Download PDFInfo
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- CN106680707A CN106680707A CN201710126480.XA CN201710126480A CN106680707A CN 106680707 A CN106680707 A CN 106680707A CN 201710126480 A CN201710126480 A CN 201710126480A CN 106680707 A CN106680707 A CN 106680707A
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- 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
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
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- G06F30/00—Computer-aided design [CAD]
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Abstract
An embodiment of the invention provides a system, a device and a method for heavy gas action setting value of double-float gas relay. The method includes: establishing a three-dimensional finite element model of the double-float gas relay to generate a fluid calculation model, wherein the three-dimensional finite element model comprises a double-float gas relay model and an oil flow model; simulating different initial flow states of the oil flow model to calculate fluid simulation values so as to obtain an initial flow state heavy gas action corresponding relation of the oil flow model and simulation action values; acquiring experimental action values of the double-float gas relay through oil flow impact experiments; acquiring the action setting value of the double-float gas relay according to the simulation action values and the experimental action values; according to the corresponding relation and a preset heavy gas action threshold of the double-float gas relay, correcting the action setting value of the double-float gas relay, so that errors in checking of the heavy gas action setting value of the double-float gas relay are remarkably reduced.
Description
Technical field
The application is related to power system security resist technology field, more particularly to a kind of pair of float Buchholz relay grave gas
Action setting valve method of calibration, apparatus and system.
Background technology
In power system, Buchholz relay is the main protection device of inside transformer, is generally arranged at transformator
In pipeline between oil conservater and fuel tank.Buchholz relay is broadly divided into open cup baffle-type Buchholz relay, single float gas
Relay and double float Buchholz relays etc..With being continuously increased for newly-built transformer station's quantity, double float Buchholz relays exist
Application in power system is more and more extensive.The sensitivity of Buchholz relay depends on action setting valve, also, the country generally should
With the double float Buchholz relays for only possessing grave gas defencive function, therefore, double float Buchholz relay grave gas actions are adjusted
The verification of value, has important impact to the reliability of double float Buchholz relays.
At present, for the verification of double float Buchholz relay grave gas action setting valves, generally using traditional experiment room
Gas-actuated relay calibration stand is carrying out.By oil stream impact experiment, flow-speed measurement, the double floats of collection are carried out to the oily stream in pipeline
The flow velocity of oil stream during Buchholz relay action, obtains the experiment working value of double float Buchholz relay grave gas, afterwards will experiment
Working value is contrasted with deliberate action limit value, whether unanimously to compare two data, if deliberate action limit value and experiment working value
It is inconsistent, then according to action limit value and the action experiment value for collecting, double float Buchholz relay grave gas actions are adjusted
Value is adjusted.
However, in actual experiment, testing working value and leading to the actual act value of double float Buchholz relay grave gas
Chang Buhui is essentially equal, generally there is certain error therebetween.Existing pair of float Buchholz relay grave gas action is whole
The method of calibration of definite value, only by the gas-actuated relay calibration stand of traditional experiment room, measures the experiment of double float Buchholz relays
Working value, verifies according to deliberate action limit value and experiment working value to action setting valve, and final check results can be produced
Larger correction error.
The content of the invention
This application provides a kind of pair of float Buchholz relay grave gas action setting valve method of calibration, apparatus and system,
Asking for larger correction error can be produced with the method for calibration for solving existing pair of float Buchholz relay grave gas action setting valve
Topic.
In a first aspect, this application provides a kind of pair of float Buchholz relay grave gas action setting valve method of calibration, institute
The method of stating includes：
The three-dimensional finite element model of double float Buchholz relays is set up, the three-dimensional finite element model includes double float gas
Relay model, and positioned at the oily flow model of described pair of float Buchholz relay mold cavity；
According to the three-dimensional finite element model, fluid calculation model is generated；
The initial fluidised form of difference of the oily flow model is simulated, fluid emulation numerical value meter is carried out to the fluid calculation model
Calculate, obtain the initial fluidised form of the oily flow model and the corresponding relation of described pair of float Buchholz relay model grave gas action,
And the simulated actions value of described pair of float Buchholz relay；
The experiment working value of described pair of float Buchholz relay is obtained, the experiment working value is obtained by oil stream impact experiment
Arrive；
Calculate the difference of the simulated actions value and the experiment working value；
Judge the difference whether less than predetermined threshold value；
If the difference is less than the predetermined threshold value, the simulated actions value or the experiment working value are exported as institute
State the action setting valve of double float Buchholz relays；
It is corresponding with the described pair of float Buchholz relay model grave gas action according to the initial fluidised form of the oily flow model
Relation, and the deliberate action limit value of described pair of float Buchholz relay grave gas, are modified to the action setting valve.
With reference in a first aspect, in first aspect in the first possible implementation, simulating the difference of the oily flow model
Initial fluidised form, fluid emulation numerical computations are carried out to the fluid calculation model, obtain the initial fluidised form of the oily flow model with
The corresponding relation of described pair of float Buchholz relay model grave gas action includes：
Simulate the different initial oil stream flow velocitys and different initial oil stream oil temperatures of the oily flow model；
Under the different initial oil stream flow velocitys and different initial oil stream oil temperatures, the temperature field to the fluid calculation model
Fluid emulation analysis is carried out with pressure field, temperature distribution information and pressure distribution information is obtained；
According to the temperature distribution information and pressure distribution information, obtain the different initial oil stream flow velocitys with it is difference initial
Oil flows the corresponding relation of oil temperature and described pair of float Buchholz relay model grave gas action.
The first possible implementation with reference to first aspect is right in second possible implementation of first aspect
The temperature field of the fluid calculation model and pressure field carry out fluid emulation analysis, obtain temperature distribution information and pressure distribution letter
Breath includes：
Subdivision is carried out to the fluid calculation model using three dimensional hexagonal grid；
According to the subdivision result, simulation calculation goes out the temperature distribution information and pressure distribution information.
Second aspect, present invention also provides a kind of pair of float Buchholz relay grave gas action setting valve calibration equipment,
Described device includes：
MBM, for setting up the three-dimensional finite element model of double float Buchholz relays, the three-dimensional finite element model
Including double float Buchholz relay models, and positioned at the oily flow model of described pair of float Buchholz relay mold cavity；
Fluid calculation model generation module, for according to the three-dimensional finite element model, generating fluid calculation model；
Analog simulation module, the initial fluidised form of the difference for simulating the oily flow model, enters to the fluid calculation model
Row fluid emulation numerical computations, obtain the initial fluidised form and described pair of float Buchholz relay model grave gas of the oily flow model
The corresponding relation of action, and the simulated actions value of described pair of float Buchholz relay；
Experiment working value acquisition module, for obtaining the experiment working value of described pair of float Buchholz relay, the experiment
Working value is obtained by oil stream impact experiment；
Computing module, for calculating the difference of the simulated actions value and the experiment working value；
Judge module, for judging the difference whether less than predetermined threshold value；
Action setting valve output module, for the difference predetermined threshold value is less than, export the simulated actions value or
Action setting valve of the experiment working value as described pair of float Buchholz relay；
Action setting valve correcting module, for according to the initial fluidised form of the oily flow model and described pair of float gas relay
The corresponding relation of device model grave gas action, and the deliberate action limit value of described pair of float Buchholz relay grave gas, to institute
State action setting valve to be modified.
With reference to second aspect, in second aspect in the first possible implementation, the analog simulation module includes：
Analog module, for simulating the different initial oil stream flow velocitys and different initial oil stream oil temperatures of the oily flow model；
Simulation analysis module, under the different initial oil stream flow velocitys and different initial oil stream oil temperatures, to the stream
The temperature field of body computation model and pressure field carry out fluid emulation analysis, obtain temperature distribution information and pressure distribution information；
Acquisition module, for according to the temperature distribution information and pressure distribution information, obtaining the different initial oil streams
The corresponding relation of flow velocity and different initial oil stream oil temperature and described pair of float Buchholz relay model grave gas action.
The first possible implementation with reference to second aspect, in second possible implementation of second aspect, institute
Stating simulation analysis module includes：
Subdivision module, for carrying out subdivision to the fluid calculation model using three dimensional hexagonal grid；
Simulation algorithm model, for according to the subdivision result, simulation calculation to go out the temperature distribution information and pressure point
Cloth information.
The third aspect, the application also provides a kind of pair of float Buchholz relay grave gas action setting valve check system, institute
The system of stating includes：Experimental provision and the simulation analysis device being connected with the experimental provision；The experimental provision includes that experiment is single
Unit, signal transmission unit and control station；The experimental considerations unit includes transformator, the pump housing and is connected to the transformator and institute
The oily flow tube road between the pump housing is stated, is used to arrange double float Buchholz relays in the oily flow tube road；The signal transmission unit
Including temperature sensor, pressure transducer and flow transducer；The input of the temperature sensor respectively with the transformation
Device and the oily flow tube road connection；The input of the pressure transducer is connected with the oily flow tube road；The flow sensing
The input of device is connected with the oily flow tube road；The outfan of the temperature sensor, pressure transducer and flow transducer
It is connected with the control station, the control station is connected with the simulation analysis device；
The experimental provision, for carrying out oil stream impact experiment to described pair of float Buchholz relay, obtains described double floating
The experiment working value of sub- Buchholz relay；
The simulation analysis device, for setting up the three-dimensional finite element model of double float Buchholz relays, the three-dimensional has
Limit meta-model includes double float Buchholz relay models, and positioned at the oil stream mould of described pair of float Buchholz relay mold cavity
Type；According to the three-dimensional finite element model, fluid calculation model is generated；The initial fluidised form of difference of the oily flow model is simulated, it is right
The fluid calculation model carries out fluid emulation numerical computations, obtains the initial fluidised form and described pair of float watt of the oily flow model
The corresponding relation of this relay model grave gas action, and the simulated actions value of described pair of float Buchholz relay；Obtain institute
The experiment working value of double float Buchholz relays is stated, the experiment working value is obtained by oil stream impact experiment；Calculate described imitative
True working value and the difference for testing working value；Judge the difference whether less than predetermined threshold value；If the difference is less than
The predetermined threshold value, exports the simulated actions value or the experiment working value as the action of described pair of float Buchholz relay
Setting valve；Closed with described pair of the corresponding of float Buchholz relay model grave gas action according to the initial fluidised form of the oily flow model
System, and the deliberate action limit value of described pair of float Buchholz relay grave gas, are modified to the action setting valve.
From above technical scheme, a kind of pair of float Buchholz relay grave gas action that the embodiment of the present application is provided is whole
Fixed value checking method, apparatus and system, by the three-dimensional finite element model for setting up double float Buchholz relays, three-dimensional finite element mould
Type includes double float Buchholz relay models, and positioned at the oily flow model of double float Buchholz relay mold cavities；According to three
Dimension FEM (finite element) model, generates fluid calculation model；In double float Buchholz relay model entrances, the difference of simulation oil flow model is just
Beginning fluidised form, convection cell computation model carries out fluid emulation numerical computations, obtains the initial fluidised form and double float gas of oily flow model
The corresponding relation of relay model grave gas action, and the simulated actions value of double float Buchholz relays；To double float gas
Relay carries out oil stream impact experiment, obtains the experiment working value of double float Buchholz relays；According to simulated actions value and experiment
Working value, obtains the action setting valve of double float Buchholz relays；According to corresponding relation and double float Buchholz relays weight watt
This deliberate action limit value, is modified to the action setting valve of double float Buchholz relays, the application by simulation analysis and
Experiment combines, and according to simulated actions value and experiment working value, obtains the action setting valve of double float Buchholz relays, so as to get
Action setting valve be more nearly with the action actual value of double float Buchholz relay grave gas, further according to corresponding relation and double
The deliberate action limit value of float Buchholz relay grave gas, is modified to the action setting valve of double float Buchholz relays, shows
Writing reduces the error of double float Buchholz relay grave gas action setting valve verifications.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the application, letter will be made to the accompanying drawing to be used needed for embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Can be with according to these other accompanying drawings of accompanying drawings acquisition.
A kind of pair of float Buchholz relay grave gas action setting valve method of calibration stream that Fig. 1 is provided for the embodiment of the present application
Cheng Tu；
The step of Fig. 2 is step S103 in Fig. 1 schematic diagram；
The step of Fig. 3 is step S1032 in Fig. 2 schematic diagram；
A kind of pair of float Buchholz relay grave gas action setting valve calibration equipment that Fig. 4 is provided for the embodiment of the present application
Structured flowchart；
Fig. 5 is the structured flowchart that emulation module is simulated in Fig. 4；
Fig. 6 is the structured flowchart of simulation analysis module in Fig. 5；
A kind of pair of float Buchholz relay grave gas action setting valve check system that Fig. 7 is provided for the embodiment of the present application
Structured flowchart；
Fig. 8 is the structured flowchart of the experimental provision in Fig. 7.
Specific embodiment
Fig. 1 is referred to, for a kind of pair of float Buchholz relay grave gas action setting valve school that the embodiment of the present application is provided
Proved recipe method, the method comprising the steps of：
Step S101, the three-dimensional finite element model for setting up double float Buchholz relays, the three-dimensional finite element model includes
Double float Buchholz relay models, and positioned at the oily flow model of described pair of float Buchholz relay mold cavity.
In the present embodiment, by taking the double float Buchholz relays of the BF types of German EMB companies production as an example, according to double floats watt
The actual structure parameters of this relay, set up 1：1 three-dimensional finite element model, the foundation of three-dimensional finite element model can be by meter
Calculation machine, is realized by existing Three-dimensional finite element modeling software.Wherein, the three-dimensional finite element model set up, including double floats
Buchholz relay model and oily flow model, oily flow model is located at the cavity portion of double float Buchholz relay models, so as to right
Flow field in double float Buchholz relay models carries out Simulation Analysis.
Step S102, according to the three-dimensional finite element model, generate fluid calculation model.
Fluid calculation model is generated by the three-dimensional finite element model set up, the Flow Field Calculation of double float Buchholz relays is
Three-dimensional computations flow problem, zoning is mainly the part that oil stream actually flows through double float Buchholz relay cavitys.
Wherein, the governing equation of the fluid calculation model is as follows：
Equation of continuity：
The equation of momentum：
In formula：ρ for transformer oil density, V for oil flow rate degree vector form, i.e. V=(vx,vy,vz), ▽ V are
The divergence of oil flow rate degree, i.e.,F is to act on the mass force on liquid oil stream micro unit,To act on the inertia force on liquid oil stream micro unit, i.e. stress tensor That is deformation ratio tensor,Referred to as Deformation tensor, describes liquid oil stream
The deformation condition of micro unit.
Wherein, calculate governing equation for the three dimensional fluid of model and boundary condition can be as follows：
Using k- ε turbulence model methods, under speed entry condition, specific governing equation is represented under cartesian coordinate
For：
The equation of continuity of incompressible fluid：
Incompressible turbulent motion equation：
Standard k-ε equations：
The equation of tubulence energy k：
The equation of dissipative shock wave ε：
In formula：ρ for transformer oil density, p for transformer oil micelle pressure, μ be oil dynamic viscosity, μtFor turbulence
Viscosity, k is tubulence energy, and ε is dissipative shock wave.Other specification Cμ=0.09, Cc1=1.44, Cc2=1.92, σk=1.0, σε=1.3.
Equation of continuity is the equation of tensor form,
xiFor coordinate components xi=(x, y, z), uiFor the velocity component u of oil streami=(vx,vy,vz), viIn the same manner, μ is the dynamic viscosity of oil,
μiFor viscosity component, uiujFor speed tensor,ρfiFor liquid oil micro unit unit volume power
Component form, ρ fi=(ρ fx,ρfy,ρfz)。
Step S103, the initial fluidised form of difference for simulating the oily flow model, fluid are carried out to the fluid calculation model and are imitated
True numerical computations, obtain the initial fluidised form of the oily flow model right with the described pair of float Buchholz relay model grave gas action
Should be related to, and the simulated actions value of described pair of float Buchholz relay.
Wherein, the initial fluidised form of the oily flow model is corresponding with the described pair of float Buchholz relay model grave gas action
Relation, it is whole as the action of the double float Buchholz relays of adjustment using the corresponding relation when can be used for subsequently adjustment action setting valve
The reference of definite value, lifts the accuracy of double float Buchholz relay grave gas action setting valve verifications.
Step S104, the experiment working value for obtaining described pair of float Buchholz relay, the experiment working value is by oil stream
Impact experiment is obtained.
Oil stream impact experiment can be carried out to double float Buchholz relays by experimental provision, with measure double float gas after
The experiment working value of electrical equipment.In oil stream impact experiment, short circuit current can be produced by Transformer Winding short circuit, cause transformation
Device failure, so as to cause transformator oil flow surge by fault current, makes oil stream impact double float Buchholz relays, causes
Double float Buchholz relay grave gas actions, and then test out the experiment working value of double float Buchholz relay grave gas actions.
Step S105, the calculating simulated actions value and the difference for testing working value.
Step S106, judge the difference whether less than predetermined threshold value.
If step S107, the difference are less than the predetermined threshold value, export the simulated actions value or the experiment is dynamic
Action setting valve of the work value as described pair of float Buchholz relay.
Due to the experiment working value of double float Buchholz relays that oil stream impact experiment is obtained, with fluid emulation numerical computations
The simulated actions value of the double float Buchholz relays for obtaining, is not the actual act of double float Buchholz relay grave gas actions
Value, and test between working value and simulated actions value, it is also possible to certain deviation is had, therefore, by calculating the emulation
Whether working value tests the difference of working value with described, and difference is compared with predetermined threshold value, judge the difference less than default
Threshold value, in the difference predetermined threshold value is less than, and illustrates to test working value with simulated actions value relatively, will can be emulated
The action setting valve of working value or the experiment working value as described pair of float Buchholz relay.
If the difference is more than or equal to the predetermined threshold value, illustrates to test and exist between working value and simulated actions value
Relatively large deviation, if simulated actions value or the experiment working value adjusted as the action of described pair of float Buchholz relay
Value, then can produce larger error.
At this time, it may be necessary to repeat the process of step S103, i.e., by same a pair of float Buchholz relay is repeated into
Row oil stream impact experiment, obtains testing working value；And repeat to carry out fluid emulation numerical computations to the fluid calculation model,
The simulated actions value of described pair of float Buchholz relay is obtained, until experiment working value is less than with the difference of both simulated actions values
Predetermined threshold value, i.e., the two reach close or even equal result, export simulated actions value now again afterwards or the experiment be dynamic
Action setting valve of the work value as described pair of float Buchholz relay.
According to simulated actions value and experiment working value, the action setting valve of double float Buchholz relays is obtained, so as to get
Action setting valve is more nearly with the action actual value of double float Buchholz relay grave gas, so as to the standard of enhancing action setting valve
Exactness.
Step S108, the initial fluidised form according to the oily flow model are dynamic with described pair of float Buchholz relay model grave gas
The corresponding relation of work, and the deliberate action limit value of described pair of float Buchholz relay grave gas, enter to the action setting valve
Row amendment.
Deliberate action limit value is action setting valve needs the desired value of adjustment, the initial fluidised form of the oily flow model and institute
The corresponding relation of double float Buchholz relay model grave gas actions is stated, can be whole as the action of the double float Buchholz relays of adjustment
The reference of definite value.
As shown in Fig. 2 in another embodiment of the application, the step of Fig. 1 in S103, the difference of the oily flow model is simulated
Initial fluidised form, fluid emulation numerical computations are carried out to the fluid calculation model, obtain the initial fluidised form of the oily flow model with
The step of corresponding relation of the described pair of float Buchholz relay model grave gas action, may comprise steps of：
Step S1031, the different initial oil stream flow velocitys for simulating the oily flow model and different initial oil stream oil temperatures.
Step S1032, under the different initial oil stream flow velocitys and different initial oil stream oil temperature, to the fluid calculation mould
The temperature field of type and pressure field carry out fluid emulation analysis, obtain temperature distribution information and pressure distribution information.
Wherein, broken down by analogue transformer, produce short circuit current and cause oil flow surge, the double float gas of impact after
Electrical equipment, and fluid emulation analysis is carried out to the temperature field in double float Buchholz relays and pressure field according to fluid calculation model.
Step S1033, according to the temperature distribution information and pressure distribution information, obtain the different initial oil stream flow velocitys
With the corresponding relation of different initial oil stream oil temperatures and described pair of float Buchholz relay model grave gas action.
The initial oil stream flow velocity and initial oil stream oil temperature of oil stream is to affect double float Buchholz relay model grave gas actions
Principal element, therefore, by different initial oil stream flow velocitys and different initial oil stream oil temperature and described pair of float Buchholz relay mould
The corresponding relation of type grave gas action, as the reference of the action setting valve of the double float Buchholz relays of adjustment, can lift verification
Reliability.
In addition it is also possible to obtain the caused transformation of pressure institute of the gas in pipelines between the oil conservater of transformator and fuel tank
Device oil flow surge, the impact to double float Buchholz relay grave gas actions, by the pressure of the gas and double float gas relays
The corresponding relation of gas action is thought highly of, as the reference of the action setting valve of the double float Buchholz relays of adjustment.
As shown in figure 3, in the another embodiment of the application, S1032 may comprise steps of the step of Fig. 2：
Step S1041, subdivision is carried out to the fluid calculation model using three dimensional hexagonal grid.
Step S1042, according to the subdivision result, simulation calculation goes out the temperature distribution information and pressure distribution information.
In view of carrying out in fluid numerical computations to double float Buchholz relay flow fields, the quality of grid control is to improve meter
Calculate the key factor of result precision；Therefore, the present embodiment takes three-dimensional six side according to the structure point of double float Buchholz relays
Shape grid carries out subdivision to the fluid calculation model；Wherein, to the oil stream position after double float Buchholz relay baffle plates of hiding
Mesh refinement is carried out, with the Flow Field Distribution computational accuracy at safety action baffle plate.
As known from the above, a kind of pair of float Buchholz relay grave gas action setting valve verification that the embodiment of the present application is provided
Method, is combined by simulation analysis and experiment, according to simulated actions value and experiment working value, obtains double float Buchholz relays
Action setting valve, so as to get action setting valve be more nearly with the action actual value of double float Buchholz relay grave gas,
Further according to corresponding relation and the deliberate action limit value of double float Buchholz relay grave gas, double float Buchholz relays are moved
It is modified as setting valve, significantly reduces the error of double float Buchholz relay grave gas action setting valve verifications.
A kind of pair of float Buchholz relay grave gas action setting valve calibration equipment that Fig. 4 is provided for the application, the dress
Put including：
MBM 11, for setting up the three-dimensional finite element model of double float Buchholz relays, the three-dimensional finite element mould
Type includes double float Buchholz relay models, and positioned at the oily flow model of described pair of float Buchholz relay mold cavity.
Fluid calculation model generation module 12, for according to the three-dimensional finite element model, generating fluid calculation model.
Analog simulation module 13, the initial fluidised form of the difference for simulating the oily flow model, to the fluid calculation model
Fluid emulation numerical computations are carried out, the initial fluidised form and described pair of float Buchholz relay model weight watt of the oily flow model is obtained
The corresponding relation of this action, and the simulated actions value of described pair of float Buchholz relay.
Experiment working value acquisition module 14, for obtaining the experiment working value of described pair of float Buchholz relay, the reality
Test working value to obtain by oil stream impact experiment.
Computing module 15, for calculating the difference of the simulated actions value and the experiment working value.
Judge module 16, for judging the difference whether less than predetermined threshold value.
Action setting valve output module 17, for the difference predetermined threshold value is less than, and exports the simulated actions value
Or the experiment working value is used as the action setting valve of described pair of float Buchholz relay.
Action setting valve correcting module 18, for according to the initial fluidised form of the oily flow model and described pair of float gas after
The corresponding relation of appliance model grave gas action, and the deliberate action limit value of described pair of float Buchholz relay grave gas, it is right
The action setting valve is modified.
As shown in figure 5, in another embodiment of the application, the analog simulation module 13 in Fig. 4 can include：
Analog module 101, for simulating the different initial oil stream flow velocitys and different initial oil stream oil temperatures of the oily flow model.
Simulation analysis module 102, under the different initial oil stream flow velocitys and different initial oil stream oil temperatures, to described
The temperature field of fluid calculation model and pressure field carry out fluid emulation analysis, obtain temperature distribution information and pressure distribution information.
Acquisition module 103, for according to the temperature distribution information and pressure distribution information, obtaining the different initial oils
Flow the corresponding relation of flow velocity and different initial oil stream oil temperatures and described pair of float Buchholz relay model grave gas action.
As shown in fig. 6, in another embodiment of the application, the simulation analysis module 102 in Fig. 5 can include：
Subdivision module 201, for carrying out subdivision to the fluid calculation model using three dimensional hexagonal grid.
Simulation algorithm model 202, for according to the subdivision result, simulation calculation to go out the temperature distribution information and pressure
Distributed intelligence.
With regard to the device in above-described embodiment, wherein modules perform the concrete mode of operation in relevant the method
Embodiment in be described in detail, explanation will be not set forth in detail herein.
As known from the above, a kind of pair of float Buchholz relay grave gas action setting valve verification that the embodiment of the present application is provided
Device, is combined by simulation analysis and experiment, according to simulated actions value and experiment working value, obtains double float Buchholz relays
Action setting valve, so as to get action setting valve be more nearly with the action actual value of double float Buchholz relay grave gas,
Further according to corresponding relation and the deliberate action limit value of double float Buchholz relay grave gas, double float Buchholz relays are moved
It is modified as setting valve, significantly reduces the error of double float Buchholz relay grave gas action setting valve verifications.
A kind of pair of float Buchholz relay grave gas action setting valve check system that Fig. 7 is provided for the application, the system
System includes：Experimental provision 2 and the simulation analysis device 1 being connected with the experimental provision 2.Experimental provision 2 is used to test double floats
The experiment working value of Buchholz relay, simulation analysis device 1 is used to obtain the imitative of double float Buchholz relays by simulation analysis
True working value.
As shown in figure 8, wherein, the experimental provision 2 includes experimental considerations unit, signal transmission unit and control station 28.Institute
Experimental considerations unit is stated including transformator 21, the pump housing 23 and the oily flow tube road being connected between the transformator 21 and the pump housing 23
20, for arranging double float Buchholz relays 22 in the oily flow tube road 20, to carry out oil to double float Buchholz relays 22
Stream impact experiment, obtains the experiment working value of double float Buchholz relays 22.The effect of the pump housing 23 is carried for oil stream impact experiment
For corresponding transformer oil.Control station 28 can also connect overcurrent protector 27, and overcurrent protector 27 is used for serious short in generation
The power supply of cutting-off controlling platform 28 during road, with the safety for ensureing to test.
The signal transmission unit includes temperature sensor 24, pressure transducer 25 and flow transducer 26.The temperature
The input of degree sensor 24 is connected respectively with the transformator 25 and the oily flow tube road 20.The pressure transducer 25
Input is connected with the oily flow tube road 20.The input of the flow transducer 26 is connected with the oily flow tube road 20.It is described
The outfan of temperature sensor 24, pressure transducer 25 and flow transducer 26 is connected with the control station 28, the control
Platform 28 is connected with the simulation analysis device 1.The control station 28 can be realized using existing gas-actuated relay calibration stand.
Double float Buchholz relays 22 are carried out oil stream impact experiment when, temperature sensor 24, pressure transducer 25 with
And flow transducer 26 can transmit the real-time change of temperature in double float Buchholz relays 22, pressure, flow to control respectively
Platform 28.Control station 28 can also connect display terminal 29, by display terminal 29 show temperature in double float Buchholz relays 22,
The real-time change of pressure, flow.
The simulation analysis device 1 is used to set up the three-dimensional finite element model of double float Buchholz relays 22, the three-dimensional
FEM (finite element) model includes double float Buchholz relay models, and positioned at the oil stream of described pair of float Buchholz relay mold cavity
Model；According to the three-dimensional finite element model, fluid calculation model is generated；The initial fluidised form of difference of the oily flow model is simulated,
Fluid emulation numerical computations are carried out to the fluid calculation model, the initial fluidised form and described pair of float of the oily flow model is obtained
The corresponding relation of Buchholz relay model grave gas action, and the simulated actions value of described pair of float Buchholz relay 22；Obtain
The experiment working value of described pair of float Buchholz relay 22 is taken, the experiment working value is obtained by oil stream impact experiment；Calculate
The simulated actions value and the difference for testing working value；Judge the difference whether less than predetermined threshold value；If the difference
Value is less than the predetermined threshold value, exports the simulated actions value or the experiment working value as described pair of float Buchholz relay
Action setting valve；According to the initial fluidised form of the oily flow model and the described pair of float Buchholz relay model grave gas action
Corresponding relation, and the deliberate action limit value of described pair of float Buchholz relay grave gas, repair to the action setting valve
Just.
In implementing, the present invention also provides a kind of computer-readable storage medium, wherein, the computer-readable storage medium can be stored
There is program, double float Buchholz relay grave gas action setting valve methods of calibration that the application is provided are may include during the program performing
Each embodiment in part or all of step.Described storage medium can be magnetic disc, CD, read-only memory (English：
Read-only memory, referred to as：ROM) or random access memory (English：Random access memory, referred to as：
RAM) etc..
It is required that those skilled in the art can be understood that the technology in the embodiment of the present invention can add by software
General hardware platform mode realizing.Based on such understanding, the technical scheme in the embodiment of the present invention substantially or
Say that the part contributed to prior art can be embodied in the form of software product, the computer software product can be deposited
Storage in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions use (can be with so that computer equipment
Be personal computer, server, either network equipment etc.) perform some part institutes of each embodiment of the invention or embodiment
The method stated.
In this specification between each embodiment identical similar part mutually referring to.Especially for double floats watt
For this relay grave gas action setting valve calibration equipment embodiment, because it is substantially similar to embodiment of the method, so retouching
That what is stated is fairly simple, and related part is referring to the explanation in embodiment of the method.
Invention described above embodiment does not constitute limiting the scope of the present invention.
Claims (7)
1. a kind of pair of float Buchholz relay grave gas action setting valve method of calibration, it is characterised in that methods described includes：
The three-dimensional finite element model of double float Buchholz relays is set up, the three-dimensional finite element model includes double float gas relays
Device model, and positioned at the oily flow model of described pair of float Buchholz relay mold cavity；
According to the three-dimensional finite element model, fluid calculation model is generated；
The initial fluidised form of difference of the oily flow model is simulated, fluid emulation numerical computations are carried out to the fluid calculation model, obtained
Obtain the initial fluidised form of the oily flow model and the corresponding relation of described pair of float Buchholz relay model grave gas action, Yi Jisuo
State the simulated actions value of double float Buchholz relays；
The experiment working value of described pair of float Buchholz relay is obtained, the experiment working value is obtained by oil stream impact experiment；
Calculate the difference of the simulated actions value and the experiment working value；
Judge the difference whether less than predetermined threshold value；
If the difference is less than the predetermined threshold value, the simulated actions value or the experiment working value are exported as described double
The action setting valve of float Buchholz relay；
According to the corresponding relation of the initial fluidised form of the oily flow model and described pair of float Buchholz relay model grave gas action,
And the deliberate action limit value of described pair of float Buchholz relay grave gas, the action setting valve is modified.
2. the method for claim 1, it is characterised in that the initial fluidised forms of difference of the simulation oily flow model, to described
Fluid calculation model carries out fluid emulation numerical computations, obtain the initial fluidised form of the oily flow model and described pair of float gas after
The corresponding relation of appliance model grave gas action includes：
Simulate the different initial oil stream flow velocitys and different initial oil stream oil temperatures of the oily flow model；
Under the different initial oil stream flow velocitys and different initial oil stream oil temperatures, the temperature field and pressure to the fluid calculation model
The field of force carries out fluid emulation analysis, obtains temperature distribution information and pressure distribution information；
According to the temperature distribution information and pressure distribution information, the different initial oil stream flow velocitys and different initial oil streams are obtained
The corresponding relation of oil temperature and described pair of float Buchholz relay model grave gas action.
3. method according to claim 2, it is characterised in that the temperature field and pressure field of the fluid calculation model are entered
Row fluid emulation is analyzed, and obtaining temperature distribution information and pressure distribution information includes：
Subdivision is carried out to the fluid calculation model using three dimensional hexagonal grid；
According to the subdivision result, simulation calculation goes out the temperature distribution information and pressure distribution information.
4. a kind of pair of float Buchholz relay grave gas action setting valve calibration equipment, it is characterised in that described device includes：
MBM, for setting up the three-dimensional finite element model of double float Buchholz relays, the three-dimensional finite element model includes
Double float Buchholz relay models, and positioned at the oily flow model of described pair of float Buchholz relay mold cavity；
Fluid calculation model generation module, for according to the three-dimensional finite element model, generating fluid calculation model；
Analog simulation module, the initial fluidised form of the difference for simulating the oily flow model, flows to the fluid calculation model
The calculating of body simulation numerical, the initial fluidised form of the acquisition oily flow model and described pair of float Buchholz relay model grave gas action
Corresponding relation, and the simulated actions value of described pair of float Buchholz relay；
Experiment working value acquisition module, for obtaining the experiment working value of described pair of float Buchholz relay, the experiment action
Value is obtained by oil stream impact experiment；
Computing module, for calculating the difference of the simulated actions value and the experiment working value；
Judge module, for judging the difference whether less than predetermined threshold value；
Action setting valve output module, for the difference predetermined threshold value is less than, and exports the simulated actions value or described
Action setting valve of the experiment working value as described pair of float Buchholz relay；
Action setting valve correcting module, for according to the initial fluidised form of the oily flow model and described pair of float Buchholz relay mould
The corresponding relation of type grave gas action, and the deliberate action limit value of described pair of float Buchholz relay grave gas, to described dynamic
It is modified as setting valve.
5. device as claimed in claim 4, it is characterised in that the analog simulation module includes：
Analog module, for simulating the different initial oil stream flow velocitys and different initial oil stream oil temperatures of the oily flow model；
Simulation analysis module, under the different initial oil stream flow velocitys and different initial oil stream oil temperatures, to the fluid meter
The temperature field and pressure field for calculating model carries out fluid emulation analysis, obtains temperature distribution information and pressure distribution information；
Acquisition module, for according to the temperature distribution information and pressure distribution information, obtaining the different initial oil stream flow velocitys
With the corresponding relation of different initial oil stream oil temperatures and described pair of float Buchholz relay model grave gas action.
6. device according to claim 5, it is characterised in that the simulation analysis module includes：
Subdivision module, for carrying out subdivision to the fluid calculation model using three dimensional hexagonal grid；
Simulation algorithm model, for according to the subdivision result, simulation calculation to go out the temperature distribution information and pressure distribution letter
Breath.
7. a kind of pair of float Buchholz relay grave gas action setting valve check system, it is characterised in that the system includes：It is real
Experiment device and the simulation analysis device being connected with the experimental provision；The experimental provision includes experimental considerations unit, signal transmission list
Unit and control station；The experimental considerations unit includes transformator, the pump housing and is connected between the transformator and the pump housing
Oily flow tube road, is used to arrange double float Buchholz relays in the oily flow tube road；The signal transmission unit includes temperature sensing
Device, pressure transducer and flow transducer；The input of the temperature sensor respectively with the transformator and the oil
Flow tube road connects；The input of the pressure transducer is connected with the oily flow tube road；The input of the flow transducer with
The oily flow tube road connection；The outfan of the temperature sensor, pressure transducer and flow transducer and the control station
Connection, the control station is connected with the simulation analysis device；
The experimental provision, for carrying out oil stream impact experiment to described pair of float Buchholz relay, obtains described pair of float watt
The experiment working value of this relay；
The simulation analysis device, for setting up the three-dimensional finite element model of double float Buchholz relays, the three-dimensional finite element
Model includes double float Buchholz relay models, and positioned at the oily flow model of described pair of float Buchholz relay mold cavity；
According to the three-dimensional finite element model, fluid calculation model is generated；The initial fluidised form of difference of the oily flow model is simulated, to described
Fluid calculation model carries out fluid emulation numerical computations, obtain the initial fluidised form of the oily flow model and described pair of float gas after
The corresponding relation of appliance model grave gas action, and the simulated actions value of described pair of float Buchholz relay；Obtain described double
The experiment working value of float Buchholz relay, the experiment working value is obtained by oil stream impact experiment；Calculate the emulation dynamic
Work value and the difference for testing working value；Judge the difference whether less than predetermined threshold value；If the difference is less than described
Predetermined threshold value, exports the simulated actions value or the experiment working value is adjusted as the action of described pair of float Buchholz relay
Value；According to the corresponding relation of the initial fluidised form of the oily flow model and described pair of float Buchholz relay model grave gas action,
And the deliberate action limit value of described pair of float Buchholz relay grave gas, the action setting valve is modified.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794294A (en) * | 2019-11-02 | 2020-02-14 | 国网辽宁省电力有限公司电力科学研究院 | Device and method for detecting simulation action of double-float gas relay of 220kV transformer |
| CN112649761A (en) * | 2020-11-26 | 2021-04-13 | 华北电力大学（保定） | Transformer heavy gas action setting method based on gas relay flow velocity and pressure intensity |
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| CN112649761A (en) * | 2020-11-26 | 2021-04-13 | 华北电力大学（保定） | Transformer heavy gas action setting method based on gas relay flow velocity and pressure intensity |
| CN112649761B (en) * | 2020-11-26 | 2022-05-24 | 华北电力大学（保定） | Transformer heavy gas action setting method based on gas relay flow velocity and pressure intensity |
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