CN106202616B - Method and system for simulating motion characteristics of transformer under short-circuit fault - Google Patents
Method and system for simulating motion characteristics of transformer under short-circuit fault Download PDFInfo
- Publication number
- CN106202616B CN106202616B CN201610477125.2A CN201610477125A CN106202616B CN 106202616 B CN106202616 B CN 106202616B CN 201610477125 A CN201610477125 A CN 201610477125A CN 106202616 B CN106202616 B CN 106202616B
- Authority
- CN
- China
- Prior art keywords
- grid model
- short
- circuit fault
- dynamic
- transformer
- 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.)
- Active
Links
Images
Classifications
-
- 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]
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The application discloses a method and a system for simulating motion characteristics of a transformer under short-circuit fault, wherein the method comprises the following steps: pre-constructing a grid model of a transformer to obtain a dynamic grid model and a static grid model; determining the resultant force of the dynamic grid model in the simulation process of the short-circuit fault operation; calculating the instantaneous speed of the dynamic grid model by using the resultant force; and controlling the dynamic grid model to correspondingly move according to the instantaneous speed. According to the method, the grid modeling is carried out on the transformer in advance to obtain a dynamic grid model and a static grid model, then the instantaneous speed of the dynamic grid model is calculated by utilizing the resultant force of the dynamic grid model in the short-circuit fault operation simulation process, and the dynamic grid model is controlled to move according to the instantaneous speed. That is, the purpose of carrying out analog simulation on the motion characteristic of the transformer after the short-circuit fault occurs is achieved.
Description
Technical Field
The invention relates to the technical field of transformer simulation, in particular to a method and a system for simulating motion characteristics of a transformer under a short-circuit fault.
Background
With the rapid development of social economy, the demand of people for electric power is increasing day by day. Power transformers are an important component of power systems and their development faces a number of challenges. From the development trend of the global power industry, high-capacity and ultra-high capacity are a main development direction of power transformers. However, the design means of the conventional power transformer has technical limitations and cannot adapt to the development trend of the current power transformer.
In order to improve and optimize the design means of the power transformer to adapt to the development trend of high capacity of the power transformer, people are trying to simulate the power transformer and then comprehensively research a three-dimensional finite element model and a multi-physical field model in a simulation model to efficiently solve the design problem existing in the high capacity power transformer. In the process, the simulation research on the motion characteristics of the transformer after the short-circuit fault occurs is a key ring. Under the condition that short circuit fault appears in the inside transformer, the inside powerful electromagnetic force effect that will produce of transformer can appear drawing pressure spring motion from this to the interior cooling oil of initiation box violently surges, produces very big destruction to the inside transformer. The simulation research on the motion characteristic of the transformer after the short-circuit fault occurs is beneficial to deepening the understanding of the oil flow surging characteristic of the transformer and the subsequent improvement on the transformer design so as to reduce the damage of the oil flow surging characteristic to the transformer. How to simulate the motion characteristics of the transformer after the short-circuit fault occurs is a problem to be solved at present.
Disclosure of Invention
In view of this, the present invention provides a method and a system for simulating a motion characteristic of a transformer in a short-circuit fault, so as to achieve the purpose of performing analog simulation on the motion characteristic of the transformer after the short-circuit fault occurs. The specific scheme is as follows:
a motion characteristic simulation method under a short-circuit fault of a transformer comprises the following steps:
pre-constructing a grid model of a transformer to obtain a dynamic grid model and a static grid model;
determining the resultant force of the dynamic grid model in the simulation process of short-circuit fault operation;
calculating an instantaneous velocity of the dynamic mesh model using the resultant force;
and controlling the dynamic grid model to correspondingly move according to the instantaneous speed.
Preferably, the process of constructing a mesh model of a transformer in advance includes:
and carrying out grid modeling on the transformer by using a layering technology in an ANSYS Fluent in advance to obtain the dynamic grid model and the static grid model.
Preferably, the dynamic mesh model comprises a winding mesh model; the static grid model comprises an iron core grid model and a box grid model.
Preferably, the process of determining the resultant force to which the dynamic grid model is subjected in the short-circuit fault operation simulation process includes:
acquiring the electromagnetic force applied to the dynamic grid model in the short-circuit fault operation simulation process;
determining the electromagnetic force as the resultant force.
Preferably, the process of determining the resultant force to which the dynamic grid model is subjected in the short-circuit fault operation simulation process includes:
acquiring the electromagnetic force applied to the dynamic grid model in the short-circuit fault operation simulation process;
acquiring oil flow resistance suffered by the dynamic grid model in a short-circuit fault operation simulation process;
and combining the electromagnetic force and the oil flow resistance to obtain the resultant force.
Preferably, the process of determining the resultant force to which the dynamic grid model is subjected in the short-circuit fault operation simulation process includes:
acquiring the electromagnetic force applied to the dynamic grid model in the short-circuit fault operation simulation process;
acquiring oil flow resistance suffered by the dynamic grid model in a short-circuit fault operation simulation process;
acquiring the self gravity of the dynamic grid model;
and combining the electromagnetic force, the oil flow resistance and the self gravity to obtain the resultant force.
Preferably, the process of acquiring the electromagnetic force to which the dynamic grid model is subjected in the simulation process of the short-circuit fault operation includes:
and directly reading the electromagnetic force applied to the dynamic grid model in the short-circuit fault operation simulation process by using the DEFINE _ INIT macro in the UDF user-defined function.
Preferably, the process of acquiring the oil flow resistance suffered by the dynamic grid model in the simulation process of the short-circuit fault operation includes:
and calculating the oil flow resistance of the dynamic grid model in the short-circuit fault operation simulation process by using a computer _ Force _ And _ Moment function in the UDF user-defined function.
Preferably, the process of calculating the instantaneous speed of the dynamic mesh model by using the resultant force includes:
solving the instantaneous acceleration of the dynamic grid model by using the resultant force;
and calculating the instantaneous speed of the dynamic grid model by using the instantaneous acceleration.
The invention also discloses a motion characteristic simulation system under the short-circuit fault of the transformer, which comprises the following steps:
the grid model construction module is used for constructing a grid model of the transformer in advance to obtain a dynamic grid model and a static grid model;
the resultant force determining module is used for determining the resultant force applied to the dynamic grid model in the short-circuit fault operation simulation process;
a speed calculation module for calculating an instantaneous speed of the dynamic mesh model using the resultant force;
and the motion control module is used for controlling the dynamic grid model to correspondingly move according to the instantaneous speed.
The method for simulating the motion characteristics of the transformer under the short-circuit fault comprises the following steps: pre-constructing a grid model of a transformer to obtain a dynamic grid model and a static grid model; determining the resultant force of the dynamic grid model in the simulation process of the short-circuit fault operation; calculating the instantaneous speed of the dynamic grid model by using the resultant force; and controlling the dynamic grid model to correspondingly move according to the instantaneous speed. Therefore, the invention carries out grid modeling on the transformer in advance to obtain a dynamic grid model and a static grid model, then utilizes the resultant force of the dynamic grid model in the short-circuit fault operation simulation process to calculate the instantaneous speed of the dynamic grid model, and further controls the dynamic grid model to move according to the instantaneous speed. Namely, the invention realizes the purpose of carrying out analog simulation on the motion characteristic of the transformer after the short-circuit fault occurs, is beneficial to deepening the understanding of the oil flow surging characteristic of the transformer and is also beneficial to the subsequent improvement on the transformer design so as to reduce the damage of the oil flow surging characteristic to the transformer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a method for simulating a motion characteristic of a transformer in a short-circuit fault according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a motion characteristic simulation system under a short-circuit fault of a transformer according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a motion characteristic simulation method under a short-circuit fault of a transformer, which is shown in figure 1 and comprises the following steps:
step S11: and pre-constructing a grid model of the transformer to obtain a dynamic grid model and a static grid model.
In this embodiment, the main components in the transformer are correspondingly constructed as a dynamic mesh model and a static mesh model according to the magnitude of the intensity of motion in the process of short-circuit fault. That is, if the intensity of movement of some components during the short-circuit fault is not less than the preset intensity, the dynamic mesh modeling is performed on the components, and if the intensity of movement of some components during the short-circuit fault is less than the preset intensity, the static mesh modeling is performed on the components.
Step S12: and determining the resultant force of the dynamic grid model in the short-circuit fault operation simulation process.
According to the requirement on the simulation fineness, any one or more types of forces suffered by the dynamic grid model in the short-circuit fault operation simulation process can be selectively combined into the resultant force. Specifically, the resultant force may be synthesized by one or more of electromagnetic force, oil flow resistance, self-gravity, and sliding friction force received by the dynamic grid model during the simulation of the short-circuit fault operation.
It will be appreciated that the more types of forces are involved in the resulting force, the higher the final fineness of the simulation.
Step S13: and calculating the instantaneous speed of the dynamic grid model by using the resultant force.
Step S14: and controlling the dynamic grid model to correspondingly move according to the instantaneous speed.
That is, the dynamic mesh model is controlled to move at a speed consistent with the instantaneous speed.
In the embodiment of the invention, the motion characteristic simulation method under the short-circuit fault of the transformer comprises the following steps: pre-constructing a grid model of a transformer to obtain a dynamic grid model and a static grid model; determining the resultant force of the dynamic grid model in the simulation process of the short-circuit fault operation; calculating the instantaneous speed of the dynamic grid model by using the resultant force; and controlling the dynamic grid model to correspondingly move according to the instantaneous speed. Therefore, the embodiment of the invention carries out grid modeling on the transformer in advance to obtain a dynamic grid model and a static grid model, and then calculates the instantaneous speed of the dynamic grid model by utilizing the resultant force of the dynamic grid model in the short-circuit fault operation simulation process, thereby controlling the dynamic grid model to move according to the instantaneous speed. That is, the embodiment of the invention realizes the purpose of performing analog simulation on the motion characteristic of the transformer after the short-circuit fault occurs, is beneficial to deepening the understanding of the oil flow surging characteristic of the transformer and is also beneficial to the subsequent improvement on the design of the transformer, so as to reduce the damage of the oil flow surging characteristic to the transformer.
The embodiment of the invention discloses a specific motion characteristic simulation method under a short-circuit fault of a transformer, and compared with the previous embodiment, the embodiment further explains and optimizes the technical scheme. Specifically, the method comprises the following steps:
in step S11 of the previous embodiment, the process of constructing the mesh model of the transformer in advance includes: and carrying out grid modeling on the transformer by using a layering technology in ANSYS fluent in advance to obtain a dynamic grid model and a static grid model.
It should be noted that ANSYS Fluid is a commercially available CFD software package (CFD) that is currently popular internationally, and has a very wide application range.
In this embodiment, the dynamic mesh model includes a winding mesh model; the static mesh model may include an iron core mesh model and a box mesh model. It can be understood that the winding mesh model is obtained by performing dynamic mesh modeling on the winding inside the transformer by using the layering technique, and the iron core mesh model and the box mesh model are obtained by performing static mesh modeling on the iron core and the box of the transformer by using the layering technique.
In addition, in step S12 of the previous embodiment, the process of determining the resultant force to which the dynamic grid model is subjected during the simulation of the short-circuit fault operation may have different situations according to the requirements on the simulation fineness. The present embodiment discloses three different cases, and it should be noted that the dynamic mesh models in the three cases are all winding mesh models disclosed above.
In one case, the step S12 may specifically include the following steps S1211 and S1212:
step S1211: acquiring the electromagnetic force applied to the dynamic grid model in the short-circuit fault operation simulation process;
step S1212: the electromagnetic force is determined as a resultant force.
In another case, the step S12 may specifically include the following steps S1221 to S1223:
step S1221: acquiring the electromagnetic force applied to the dynamic grid model in the short-circuit fault operation simulation process;
step S1222: acquiring oil flow resistance of the dynamic grid model in a short-circuit fault operation simulation process;
step S1223: and combining the electromagnetic force and the oil flow resistance to obtain resultant force.
In another case, the step S12 may specifically include the following steps S1231 to S1234:
step S1231: acquiring the electromagnetic force applied to the dynamic grid model in the short-circuit fault operation simulation process;
step S1232: acquiring oil flow resistance of the dynamic grid model in a short-circuit fault operation simulation process;
step S1233: acquiring the self gravity of the dynamic grid model;
step S1234: and combining the electromagnetic force, the oil flow resistance and the self gravity to obtain resultant force.
Of course, in addition to the above three cases, the sliding friction between the winding and the core may be taken into account in determining the resultant force, so as to further improve the simulation fineness.
In addition, in any one of the step S1211, the step S1221, and the step S1231, the step of obtaining the electromagnetic force received by the dynamic grid model in the short-circuit fault operation simulation process specifically includes: and directly reading the electromagnetic force applied to the dynamic grid model in the short-circuit fault operation simulation process by using a DEFINE _ INIT macro in a UDF User-Defined Function (UDF).
In addition, in step S1222 or step S1232, the process of obtaining the oil flow resistance that the dynamic mesh model receives in the short-circuit fault operation simulation process specifically includes: and calculating the oil flow resistance of the dynamic grid model in the short-circuit fault operation simulation process by using a computer _ Force _ And _ Moment function in the UDF user-defined function.
More specifically, in step S13 of the previous embodiment, the process of calculating the instantaneous speed of the dynamic mesh model by using the resultant force specifically includes the following steps S131 and S132; wherein:
step S131: solving the instantaneous acceleration of the dynamic grid model by utilizing resultant force;
step S132: the instantaneous velocity of the dynamic mesh model is calculated using the instantaneous acceleration.
It can be understood that, in the step S131, the instantaneous acceleration of the dynamic mesh model needs to be solved in combination with the self-quality parameters of the dynamic mesh model.
The specific implementation of the above steps S131 and S132 can be achieved by using a default _ CG _ MOTION macro in the UDF user-defined function.
Correspondingly, the embodiment of the present invention further discloses a motion characteristic simulation system under the short-circuit fault of the transformer, as shown in fig. 2, the system includes:
the grid model construction module 21 is used for constructing a grid model of the transformer in advance to obtain a dynamic grid model and a static grid model;
the resultant force determining module 22 is configured to determine a resultant force applied to the dynamic grid model in the short-circuit fault operation simulation process;
a speed calculation module 23, configured to calculate an instantaneous speed of the dynamic mesh model using the resultant force;
and the motion control module 24 is used for controlling the dynamic grid model to correspondingly move according to the instantaneous speed.
For more detailed working processes of the above modules, reference may be made to relevant contents in the foregoing embodiments, and details are not repeated here.
Therefore, the embodiment of the invention carries out grid modeling on the transformer in advance to obtain a dynamic grid model and a static grid model, and then calculates the instantaneous speed of the dynamic grid model by utilizing the resultant force of the dynamic grid model in the short-circuit fault operation simulation process, thereby controlling the dynamic grid model to move according to the instantaneous speed. That is, the embodiment of the invention realizes the purpose of performing analog simulation on the motion characteristic of the transformer after the short-circuit fault occurs, is beneficial to deepening the understanding of the oil flow surging characteristic of the transformer and is also beneficial to the subsequent improvement on the design of the transformer, so as to reduce the damage of the oil flow surging characteristic to the transformer.
Finally, it should also be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The method and the system for simulating the motion characteristics of the transformer under the short-circuit fault are described in detail, specific examples are applied in the method for simulating the motion characteristics of the transformer under the short-circuit fault, the principle and the implementation mode of the method are explained, and the description of the examples is only used for helping to understand the method and the core idea of the method; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A motion characteristic simulation method under a short-circuit fault of a transformer is characterized by comprising the following steps:
pre-constructing a grid model of a transformer to obtain a dynamic grid model and a static grid model;
determining the resultant force of the dynamic grid model in the simulation process of short-circuit fault operation;
calculating an instantaneous velocity of the dynamic mesh model using the resultant force;
controlling the dynamic grid model to correspondingly move according to the instantaneous speed;
the pre-constructing a grid model of the transformer to obtain a dynamic grid model and a static grid model comprises the following steps: performing dynamic grid modeling on a component of which the movement intensity degree is not less than a preset degree in the short-circuit fault process, and performing static grid modeling on a component of which the movement intensity degree is less than the preset degree in the short-circuit fault process;
in the process of determining the resultant force to which the dynamic grid model is subjected in the short-circuit fault operation simulation process, the method further comprises the following steps: adding a sliding friction force between the winding and the core to the resultant force.
2. The method for simulating the motion characteristic of the transformer under the short-circuit fault is characterized in that the process of constructing the grid model of the transformer in advance comprises the following steps:
and carrying out grid modeling on the transformer by using a layering technology in an ANSYS Fluent in advance to obtain the dynamic grid model and the static grid model.
3. The method for simulating the motion characteristic under the short-circuit fault of the transformer according to claim 2, wherein the dynamic grid model comprises a winding grid model; the static grid model comprises an iron core grid model and a box grid model.
4. The method for simulating the motion characteristic of the transformer under the short-circuit fault condition according to claim 3, wherein the step of determining the resultant force to which the dynamic grid model is subjected in the short-circuit fault operation simulation process comprises:
acquiring the electromagnetic force applied to the dynamic grid model in the short-circuit fault operation simulation process;
determining the electromagnetic force as the resultant force.
5. The method for simulating the motion characteristic of the transformer under the short-circuit fault condition according to claim 3, wherein the step of determining the resultant force to which the dynamic grid model is subjected in the short-circuit fault operation simulation process comprises:
acquiring the electromagnetic force applied to the dynamic grid model in the short-circuit fault operation simulation process;
acquiring oil flow resistance suffered by the dynamic grid model in a short-circuit fault operation simulation process;
and combining the electromagnetic force and the oil flow resistance to obtain the resultant force.
6. The method for simulating the motion characteristic of the transformer under the short-circuit fault condition according to claim 3, wherein the step of determining the resultant force to which the dynamic grid model is subjected in the short-circuit fault operation simulation process comprises:
acquiring the electromagnetic force applied to the dynamic grid model in the short-circuit fault operation simulation process;
acquiring oil flow resistance suffered by the dynamic grid model in a short-circuit fault operation simulation process;
acquiring the self gravity of the dynamic grid model;
and combining the electromagnetic force, the oil flow resistance and the self gravity to obtain the resultant force.
7. The method for simulating the motion characteristic under the short-circuit fault of the transformer according to any one of claims 4 to 6, wherein the step of obtaining the electromagnetic force applied to the dynamic grid model in the short-circuit fault operation simulation process comprises:
and directly reading the electromagnetic force applied to the dynamic grid model in the short-circuit fault operation simulation process by using the DEFINE _ INIT macro in the UDF user-defined function.
8. The method for simulating the movement characteristics of the transformer under the short-circuit fault condition according to claim 7, wherein the step of obtaining the oil flow resistance of the dynamic grid model during the simulation of the short-circuit fault operation comprises:
and calculating the oil flow resistance of the dynamic grid model in the short-circuit fault operation simulation process by using a computer _ Force _ And _ Moment function in the UDF user-defined function.
9. The method for simulating the motion characteristic under the short-circuit fault of the transformer according to any one of claims 1 to 6, wherein the process of calculating the instantaneous speed of the dynamic grid model by using the resultant force comprises:
solving the instantaneous acceleration of the dynamic grid model by using the resultant force;
and calculating the instantaneous speed of the dynamic grid model by using the instantaneous acceleration.
10. A motion characteristic simulation system under a short-circuit fault of a transformer is characterized by comprising:
the grid model construction module is used for constructing a grid model of the transformer in advance to obtain a dynamic grid model and a static grid model;
the resultant force determining module is used for determining the resultant force applied to the dynamic grid model in the short-circuit fault operation simulation process;
a speed calculation module for calculating an instantaneous speed of the dynamic mesh model using the resultant force;
the motion control module is used for controlling the dynamic grid model to correspondingly move according to the instantaneous speed;
the grid model building module is specifically used for carrying out dynamic grid modeling on a component with the movement intensity not less than a preset degree in the short-circuit fault process and carrying out static grid modeling on a component with the movement intensity less than the preset degree in the short-circuit fault process;
and the resultant force determining module is further configured to, in the process of determining the resultant force to which the dynamic grid model is subjected in the short-circuit fault operation simulation process: adding a sliding friction force between the winding and the core to the resultant force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610477125.2A CN106202616B (en) | 2016-06-23 | 2016-06-23 | Method and system for simulating motion characteristics of transformer under short-circuit fault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610477125.2A CN106202616B (en) | 2016-06-23 | 2016-06-23 | Method and system for simulating motion characteristics of transformer under short-circuit fault |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106202616A CN106202616A (en) | 2016-12-07 |
| CN106202616B true CN106202616B (en) | 2020-08-14 |
Family
ID=57461799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610477125.2A Active CN106202616B (en) | 2016-06-23 | 2016-06-23 | Method and system for simulating motion characteristics of transformer under short-circuit fault |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106202616B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106202834A (en) * | 2016-08-11 | 2016-12-07 | 广东电网有限责任公司电力科学研究院 | The computational methods of a kind of three-phase transformer oil stream motion and device |
| CN107194061A (en) * | 2017-05-19 | 2017-09-22 | 广东电网有限责任公司电力科学研究院 | 110kV oil-filled transformers structure, fluid multiple physical field method for numerical simulation and system |
| CN107194060A (en) * | 2017-05-19 | 2017-09-22 | 广东电网有限责任公司电力科学研究院 | 220kV oil-filled transformers structure, fluid multiple physical field method for numerical simulation and system |
| 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 |
| CN111192772A (en) * | 2019-12-31 | 2020-05-22 | 国网北京市电力公司 | Method and device for processing characteristics of movable iron core of voltage regulating switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104331567A (en) * | 2014-11-11 | 2015-02-04 | 广东电网有限责任公司佛山供电局 | Method and system for predicting false protection action of heavy gas of compact transformer |
| CN105095609A (en) * | 2015-09-21 | 2015-11-25 | 武汉大学 | Transformer electromagnetic vibration noise calculating method based on finite element method |
| CN105182172A (en) * | 2015-07-23 | 2015-12-23 | 广东电网有限责任公司电力科学研究院 | Vibration signal pattern spectrum-based method for diagnosing winding conditions under sudden short circuit of transformer |
| CN105259435A (en) * | 2015-09-23 | 2016-01-20 | 国网山东莒县供电公司 | Transformer monitoring device and fault diagnosis method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2128440A4 (en) * | 2006-12-28 | 2012-03-14 | Wind To Power System S L | Asynchronous generator with control of the voltage applied to the stator |
-
2016
- 2016-06-23 CN CN201610477125.2A patent/CN106202616B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104331567A (en) * | 2014-11-11 | 2015-02-04 | 广东电网有限责任公司佛山供电局 | Method and system for predicting false protection action of heavy gas of compact transformer |
| CN105182172A (en) * | 2015-07-23 | 2015-12-23 | 广东电网有限责任公司电力科学研究院 | Vibration signal pattern spectrum-based method for diagnosing winding conditions under sudden short circuit of transformer |
| CN105095609A (en) * | 2015-09-21 | 2015-11-25 | 武汉大学 | Transformer electromagnetic vibration noise calculating method based on finite element method |
| CN105259435A (en) * | 2015-09-23 | 2016-01-20 | 国网山东莒县供电公司 | Transformer monitoring device and fault diagnosis method |
Non-Patent Citations (1)
| Title |
|---|
| 大型变压器涡流损耗与器身振动的计算与分析;周伟;《中国优秀硕士学位论文全文数据库 工程科技II辑》;20120715(第07期);正文第17,29-46页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106202616A (en) | 2016-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106202616B (en) | Method and system for simulating motion characteristics of transformer under short-circuit fault | |
| CN103440357A (en) | Virtual reality roaming scene generation method and system | |
| Keppens et al. | The dynamics of funnel prominences | |
| CN106650007A (en) | Computing method of leakage magnetic field and winding vibration displacement of transformer in steady state | |
| CN106777812B (en) | Method for calculating short-circuit vibration characteristics of transformer winding | |
| Markus et al. | A CFD approach to modeling wave-current interaction | |
| CN105224724A (en) | The computing method of the displacement of a kind of Transformer Winding short-circuit impact and vibration acceleration | |
| CN106202834A (en) | The computational methods of a kind of three-phase transformer oil stream motion and device | |
| CN104217273A (en) | Characteristic management method for spacecraft three-dimensional digital model | |
| CN104614262B (en) | A kind of electromagnetic type Dynamic And Static Loads monitoring, record and the method for applying integrated system and using it to simulate shock-effect | |
| Sumei et al. | Electromagnetic and structure analysis for EAST vacuum vessel with plasma facing components during VDE | |
| CN103761406A (en) | Low-voltage electromagnetic switch three-dimensional dynamic full-simulation virtual design platform | |
| CN102201669A (en) | Method for selecting direct-current hardware fitting for +/- 660 kV valve hall | |
| CN103617372A (en) | Method for computing three-dimensional electric fields of converter valve | |
| Ishikawa et al. | Visual simulation of magnetic fluid using a procedural approach for spikes shape | |
| Doan et al. | Computational fluid dynamic analysis of a marine hydrokinetic crossflow turbine in low Reynolds number flow | |
| CN106844950A (en) | The computational methods and device of a kind of 220kV three-phase transformers A phases short circuit electromagnetic field | |
| Liu et al. | Construction and Visualization of 3D Landscape | |
| Shobhana et al. | Research Developments of Eddy Current Dampers for Seismic Vibration Control of Structures | |
| Lu et al. | Real-time simulation dynamics model and solution algorithm for the trolley-hoisting system in container crane simulated training system | |
| JP2013088988A (en) | Mesh generation device, mesh generation method and mesh generation program | |
| CN107491609A (en) | A kind of substation equipment visualizes real-time dynamic folding display methods | |
| Zhu et al. | A Numerical Study on Oil Pressure Rise Caused by Arcing Faults Inside a Converter Transformer | |
| Mitsufuji et al. | A ferrofluid motion analysis with particle method and magnetic moment method | |
| Iida et al. | An empirical model of downburst of non-stationary pulsed jet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |