CN106021663B - A kind of analysis method and device of Transformer Heavy Gas protection - Google Patents
A kind of analysis method and device of Transformer Heavy Gas protection Download PDFInfo
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- CN106021663B CN106021663B CN201610305342.3A CN201610305342A CN106021663B CN 106021663 B CN106021663 B CN 106021663B CN 201610305342 A CN201610305342 A CN 201610305342A CN 106021663 B CN106021663 B CN 106021663B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
Abstract
The analysis method and device of a kind of Transformer Heavy Gas protection disclosed in the present application; the voltage parameter and current parameters of the transformer of grave gas trip protection are caused including obtaining; in conjunction with the mathematical model of preset transformer; simulation calculation is carried out to the physical field of transformer; and then obtain the flow velocity numerical value of gas stream impact air relay; the setting valve for finally obtaining grave gas protection realizes the accurate setting of the setting valve of grave gas protection.
Description
Technical field
This application involves field transformer, analysis method more specifically to a kind of protection of Transformer Heavy Gas and
Device.
Background technique
Transformer non-electricity protects the protection in terms of the gas for referring generally to be related to setting valve, pressure and temperature.Work as transformation
Occur inside device single-phase earthing, electric discharge or not serious shorted-turn fault when, other protection mechanisms are due to obtained signal is weak
It does not work, but these failures are responsible for transformer and other materials decompose and generate gas.It is constituted using this feature anti-
The protective device for reflecting gas variation claims protection.
Protection gas relay, there are two functions for gas relay tool: light gas protecting and grave gas protection.Its
In, grave gas protection is when the catastrophe failures such as high-energy arc discharge occurs in inside transformer, and transformer oil sharply decomposes production
Raw bulk gas is discharged by gas relay to oil conservater direction, and the gas stream of formation reaches certain flow rate, impact baffle plate,
Underlying magnet makes lower reed switch contact connect starting tripping.But the setting of the setting valve about the protection of the grave gas of transformer,
The experience of people is relied primarily on to set, can not the progress of setting valve of counterweight protection accurately set.
Summary of the invention
In view of this, the application proposes the analysis method and device of a kind of Transformer Heavy Gas protection, transformer to be passed through
Mathematical model, analysis transformer grave gas protect during gas stream impact air relay flow velocity numerical value, in turn
The setting valve for obtaining grave gas protection realizes the accurate setting purpose of the setting valve of grave gas protection.
To achieve the goals above, it is proposed that scheme it is as follows:
A kind of analysis method of Transformer Heavy Gas protection, comprising:
Obtain the voltage parameter and current parameters for causing the transformer of grave gas trip protection；
According to the mathematical model of the voltage parameter and the current parameters and preset transformer, the object is carried out
The simulation calculation of field is managed, the mathematical model includes the structural parameters and material parameter of the transformer；
According to the simulation result, the flow velocity numerical value of gas stream impact air relay is obtained；
The setting valve of the grave gas protection of the transformer is obtained according to the flow velocity numerical value.
Preferably, the mathematical model according to the voltage parameter and the current parameters and preset transformer,
Carry out the simulation calculation of the physical field, comprising:
According to the emi analysis submodel of the voltage parameter, the current parameters and the mathematical model, described in progress
The simulation calculation of the electromagnetic field of transformer, the simulation calculation of the electromagnetic field include electric-field intensity distribution, Distribution of Magnetic Field and coil
The calculating of middle out-of-balance current distribution.
Preferably, the mathematical model according to the voltage parameter and the current parameters and preset transformer,
Carry out the simulation calculation of the physical field, further includes:
According to the fluid analysis submodel of the voltage parameter, the current parameters and the mathematical model, described in progress
The simulation calculation of the fluid field of transformer, the simulation calculation of the fluid field include the flow distribution and heat exchange of cooling oil path oil stream
The calculating of efficiency.
Preferably, the mathematical model according to the voltage parameter and the current parameters and preset transformer,
Carry out the simulation calculation of the physical field, further includes:
According to the structural analysis submodel of the voltage parameter, the current parameters and the mathematical model, described in progress
The simulation calculation of the simulation calculation of the structure field of transformer, the structure field includes the calculating of structural strength and deformation extent.
A kind of analytical equipment of Transformer Heavy Gas protection, comprising:
Data capture unit, for obtaining the voltage parameter and current parameters that cause the transformer of grave gas trip protection；
Physical field computing unit, for according to the voltage parameter and the current parameters and preset transformer
Mathematical model, carries out the simulation calculation of the physical field, and the mathematical model includes the structural parameters and material of the transformer
Parameter；
Flow velocity numerical value acquiring unit, for obtaining gas stream impact air relay according to the simulation result
Flow velocity numerical value；
Setting valve acquiring unit, the adjusting that the grave gas for obtaining the transformer according to the flow velocity numerical value is protected
Value.
Preferably, the physical field computing unit, comprising:
Electromagnetic Calculation subelement, for the electricity according to the voltage parameter, the current parameters and the mathematical model
Magnetic analysis submodel, carries out the simulation calculation of the electromagnetic field of the transformer, and the simulation calculation of the electromagnetic field includes electric-field strength
The calculating of out-of-balance current distribution in degree distribution, Distribution of Magnetic Field and coil.
Preferably, the physical field computing unit, further includes:
Fluid field computation subunit, for the stream according to the voltage parameter, the current parameters and the mathematical model
Body analyzes submodel, carries out the simulation calculation of the fluid field of the transformer, the simulation calculation of the fluid field includes cooling oil
The flow distribution of road binders stream and the calculating of heat exchange efficiency.
Preferably, the physical field computing unit, further includes:
Structure field computation subelement, for the knot according to the voltage parameter, the current parameters and the mathematical model
Structure analyzes submodel, carries out the simulation calculation of the structure field of the transformer, the simulation calculation of the structure field includes that structure is strong
The calculating of degree and deformation extent.
It can be seen from the above technical scheme that a kind of analysis method of Transformer Heavy Gas protection disclosed in the present application and
Device causes the voltage parameter and current parameters of the transformer of grave gas trip protection including obtaining, in conjunction with preset transformer
Mathematical model, simulation calculation is carried out to the physical field of transformer, and then obtain the flow velocity number of gas stream impact air relay
Value finally obtains the setting valve of grave gas protection, realizes the accurate setting of the setting valve of grave gas protection.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of flow chart of the analysis method of Transformer Heavy Gas protection disclosed in the present embodiment；
Fig. 2 is a kind of schematic diagram of the analytical equipment of Transformer Heavy Gas protection disclosed in the present embodiment.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
The present embodiment discloses a kind of analysis method of Transformer Heavy Gas protection, shown in Figure 1, comprising:
Step S11: the voltage parameter and current parameters for causing the transformer of grave gas trip protection are obtained.
Voltage parameter and electric current ginseng when unidirectional ground connection, electric discharge or not serious shorted-turn fault occurs in transformer
Number is the basic data of analysis.Analysis foundation data in this way carry out simulation calculation to the physical field of transformer.
Step S12: it according to the voltage parameter of acquisition and current parameters and the mathematical model of preset transformer, carries out
The simulation calculation of the physical field of transformer, mathematical model include the structural parameters and material parameter of transformer.
By transformer occur unidirectional ground connection, electric discharge or not serious shorted-turn fault when current parameters and voltage ginseng
Input quantity of the number as the mathematical models of transformer, the mathematical model of transformer according to the current parameters of input and voltage parameter into
The simulation calculation of row physical field.Mathematical model passes through sound, light, electricity, image, three-dimensional animation and computer program-control technology and entity
Model blends, and can fully demonstrate the characteristics of showing content, reaches a kind of dynamic vision effect remarkably true to life, variation is colourful
Fruit.The mathematical model of transformer can be arranged by means such as the design drawing of transformer or in-site measurements.
Step S13: according to simulation result, the flow velocity numerical value of gas stream impact air relay is obtained.
Obtain the gas stream impact when unidirectional ground connection, electric discharge or not serious shorted-turn fault occurs in transformer
The flow velocity numerical value of gas relay.
Step S14: the setting valve of the grave gas protection of transformer is obtained according to flow velocity numerical value.
The setting valve of the grave gas protection of transformer, i.e., when the flow velocity numerical value of gas stream impact air relay reaches setting
Setting valve when, occur grave gas trip protection.Therefore, the setting of the setting valve of grave gas protection is less than the flow velocity number of acquisition
Value.
A kind of analysis method of Transformer Heavy Gas protection disclosed in the present embodiment, including obtain and grave gas protection is caused to jump
The voltage parameter and current parameters of the transformer of lock, in conjunction with the mathematical model of preset transformer, to the physical field of transformer into
Row simulation calculation, and then the flow velocity numerical value of gas stream impact air relay is obtained, the setting valve of grave gas protection is finally obtained,
Realize the accurate setting of the setting valve of grave gas protection.
The simulation calculation of physical field includes the simulation calculation of electromagnetic field, structure field and fluid field.Structure is carried out to transformer
The coupling analysis of the multiple physical fields such as field, fluid field and electromagnetic field, the flow velocity numerical value of obtained gas stream impact air relay
It is more nearly true value, further improves the setting precision of the setting valve of grave gas protection.
ANSYS pre-treatment system can be used, the mathematical model of transformer is handled, emi analysis submodule is obtained
Type, structural analysis submodel and fluid analysis submodel.According to the voltage parameter of acquisition and current parameters and mathematical model
Emi analysis submodel, carries out the simulation calculation of the electromagnetic field of transformer, the simulation calculation of electromagnetic field include electric-field intensity distribution,
The calculating etc. that out-of-balance current is distributed in Distribution of Magnetic Field and coil.Specifically, utilizing the Maxwell finite element analysis function of ANSYS
Can, from the electric-field intensity distribution of the angle analysis transformer of electromagnetic field, insulation safety, Distribution of Magnetic Field, the spuious damage of structural member
Out-of-balance current distribution in consumption, short-circuit electromotive force and coil etc..The core theory used in the analysis process is Maxwell
Equation group.
According to the structural analysis submodel of parameter signal and mathematical model, the simulation calculation of the structure field of transformer is carried out,
The simulation calculation of structure field includes the calculating of structural strength and deformation extent.Transformer insulated porcelain vase, purlin are established using ANSYS
The structural analysis submodel of the compositions such as frame, winding, iron core, analyzes structural strength and deformation extent of transformer etc..For one
Linear-static structural analysis, displacement { x } are solved by matrix equation [K] { x }={ F }, wherein [K] is a scalar matrix, { F } is
Static state is added in power, damping on structural analysis submodel etc..
According to the fluid analysis submodel of parameter signal and mathematical model, the simulation calculation of the fluid field of transformer is carried out,
The simulation calculation of fluid field includes the flow distribution of cooling oil path oil stream and the calculating of heat exchange efficiency.Specifically, utilizing ANSYS points
Analyse transformer Cooling oil circuit oil stream flow distribution, heat exchange efficiency etc..By computational domain discretization control volume, asked on these control volumes
Quality, momentum, energy, the general conservation equation such as component are solved, to turn to Algebraic Equation set for partial differential equations are discrete, uses number
Value method Solving Algebraic Equation group is to obtain fluid field solution.
Above formula is hydrodynamics general formula,For transient terms,For convective term,
For diffusion term,For source item.
The present embodiment discloses a kind of analytical equipment of Transformer Heavy Gas protection, shown in Figure 2, comprising:
Data capture unit 11, for obtaining the voltage parameter and electric current ginseng that cause the transformer of grave gas trip protection
Number；
Physical field computing unit 12, for the number according to voltage parameter and the current parameters and preset transformer
Word model, carries out the simulation calculation of the physical field, and mathematical model includes the structural parameters and material parameter of the transformer；
Flow velocity numerical value acquiring unit 13, for obtaining the stream of gas stream impact air relay according to simulation result
Fast numerical value；
Setting valve acquiring unit 14, the setting valve that the grave gas for obtaining transformer according to flow velocity numerical value is protected.
A kind of analytical equipment of Transformer Heavy Gas protection disclosed in the present embodiment, including obtain and grave gas protection is caused to jump
The voltage parameter and current parameters of the transformer of lock, in conjunction with the mathematical model of preset transformer, to the physical field of transformer into
Row simulation calculation, and then the flow velocity numerical value of gas stream impact air relay is obtained, the setting valve of grave gas protection is finally obtained,
Realize the accurate setting of the setting valve of grave gas protection.
The physical field computing unit, comprising: Electromagnetic Calculation subelement, fluid field computation subunit and structure field computation
Subelement.Electromagnetic Calculation subelement is become according to the emi analysis submodel of voltage parameter, current parameters and mathematical model
The simulation calculation of the electromagnetic field of depressor, the simulation calculation of electromagnetic field include uneven in electric-field intensity distribution, Distribution of Magnetic Field and coil
The calculating for the current distribution that weighs.Fluid field computation subunit, according to the fluid analysis of voltage parameter, current parameters and mathematical model
Model, carries out the simulation calculation of the fluid field of transformer, and the simulation calculation of fluid field includes the flow distribution of cooling oil path oil stream
With the calculating of heat exchange efficiency.Structure field computation subelement is sub according to the structural analysis of voltage parameter, current parameters and mathematical model
Model, carries out the simulation calculation of the structure field of transformer, and the simulation calculation of structure field includes the meter of structural strength and deformation extent
It calculates.
For device embodiment, since it essentially corresponds to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
It needs that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not
In the case where making the creative labor, it can understand and implement.
Herein, relational terms such as first and second and the like be used merely to by an entity or operation with it is another
One entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this reality
Relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized or use the application.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
These implementation+examples shown in this article are not intended to be limited to, and are to fit to and the principles and novel features disclosed herein phase
Consistent widest scope.
Claims (2)
1. a kind of analysis method of Transformer Heavy Gas protection characterized by comprising
Obtain the voltage parameter and current parameters for causing the transformer of grave gas trip protection；
According to the mathematical model of the voltage parameter and the current parameters and preset transformer, the imitative of physical field is carried out
True to calculate, the mathematical model includes the structural parameters and material parameter of the transformer；
According to the simulation result, the flow velocity numerical value of gas stream impact air relay is obtained；
The setting valve of the grave gas protection of the transformer is obtained according to the flow velocity numerical value, the setting valve is less than the flow velocity
Numerical value；
The mathematical model according to the voltage parameter and the current parameters and preset transformer carries out physical field
Simulation calculation, comprising:
According to the emi analysis submodel of the voltage parameter, the current parameters and the mathematical model, the transformation is carried out
The simulation calculation of the electromagnetic field of device, the simulation calculation of the electromagnetic field include in electric-field intensity distribution, Distribution of Magnetic Field and coil not
The calculating of balanced balanced current distribution；
According to the fluid analysis submodel of the voltage parameter, the current parameters and the mathematical model, the transformation is carried out
The simulation calculation of the fluid field of device, the simulation calculation of the fluid field include the flow distribution and heat exchange efficiency of cooling oil path oil stream
Calculating；And
According to the structural analysis submodel of the voltage parameter, the current parameters and the mathematical model, the transformation is carried out
The simulation calculation of the simulation calculation of the structure field of device, the structure field includes the calculating of structural strength and deformation extent.
2. a kind of analytical equipment of Transformer Heavy Gas protection characterized by comprising
Data capture unit, for obtaining the voltage parameter and current parameters that cause the transformer of grave gas trip protection；
Physical field computing unit, for the number according to the voltage parameter and the current parameters and preset transformer
Model, carries out the simulation calculation of physical field, and the mathematical model includes the structural parameters and material parameter of the transformer；
Flow velocity numerical value acquiring unit, for obtaining the flow velocity of gas stream impact air relay according to the simulation result
Numerical value；
Setting valve acquiring unit, the setting valve that the grave gas for obtaining the transformer according to the flow velocity numerical value is protected, institute
Setting valve is stated less than the flow velocity numerical value；
The physical field computing unit, comprising:
Electromagnetic Calculation subelement, for according to the electromagnetism of the voltage parameter, the current parameters and the mathematical model point
Submodel is analysed, the simulation calculation of the electromagnetic field of the transformer is carried out, the simulation calculation of the electromagnetic field includes electric field strength point
The calculating that out-of-balance current is distributed in cloth, Distribution of Magnetic Field and coil；
Fluid field computation subunit, for according to the fluid of the voltage parameter, the current parameters and the mathematical model point
Submodel is analysed, carries out the simulation calculation of the fluid field of the transformer, the simulation calculation of the fluid field includes cooling oil road binders
The flow distribution of stream and the calculating of heat exchange efficiency；And
Structure field computation subelement, for according to the structure of the voltage parameter, the current parameters and the mathematical model point
Analyse submodel, carry out the simulation calculation of the structure field of the transformer, the simulation calculation of the structure field include structural strength and
The calculating of deformation extent.
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| CN201610305342.3A CN106021663B (en) | 2016-05-09 | 2016-05-09 | A kind of analysis method and device of Transformer Heavy Gas protection |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106682264A (en) * | 2016-11-24 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Method for determining setting valve when gas relay operates based on CFD |
| CN106680707B (en) * | 2017-03-06 | 2023-10-17 | 云南电网有限责任公司电力科学研究院 | Method, device and system for checking heavy gas action setting value of double-float gas relay |
| CN108460226B (en) * | 2018-03-21 | 2021-01-26 | 广东电网有限责任公司电力科学研究院 | Method for calculating movement condition of oil flow in transformer oil tank |
| CN108390356B (en) * | 2018-03-21 | 2019-08-30 | 广东电网有限责任公司电力科学研究院 | A kind of grave gas guard method based on fault time feature |
| CN109904842B (en) * | 2019-02-28 | 2020-01-21 | 西安交通大学 | Oil-immersed transformer digital gas protection method based on oil flow velocity characteristics |
| 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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