CN107169237A - A kind of pumped-storage power generation machine Damper Winding magnetic signature analysis method - Google Patents
A kind of pumped-storage power generation machine Damper Winding magnetic signature analysis method Download PDFInfo
- Publication number
- CN107169237A CN107169237A CN201710457587.2A CN201710457587A CN107169237A CN 107169237 A CN107169237 A CN 107169237A CN 201710457587 A CN201710457587 A CN 201710457587A CN 107169237 A CN107169237 A CN 107169237A
- Authority
- CN
- China
- Prior art keywords
- model
- pumped
- power generation
- damper winding
- generation machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
A kind of pumped-storage power generation machine Damper Winding magnetic signature analysis method, belong to pumped-storage power generation machine magnetic field analysis technical field, the problem of present invention is in order to solve currently without can accurately analyze the effective ways of particular kind of relationship between pumped-storage power generation machine magnetic field and Damper Winding.Including step one, founding mathematical models and FEM model simultaneously complete emulation；Step 2, simplifies physical model；Step 3, determines mathematical modeling；Step 4, is calculated electromagnetic force suffered by the amortisseur bar in different change working transient process, Exciting Windings for Transverse Differential Protection, pole body, pole shoe；Step 5, Domain Decomposition Method is coupled with radial direction base element free；Step 6, draws the functional relation between LOADING RATES and Damper Winding dynamic translation electric current；Step 7, interpretation of result.A kind of pumped-storage power generation machine Damper Winding magnetic signature analysis method of the present invention can break away from dependence of the FInite Element to unit, have the advantages that precision is high, it is simple to calculate.
Description
Technical field
The present invention relates to a kind of magnetic signature analysis method, and in particular to a kind of pumped-storage power generation machine Damper Winding magnetic field
Characteristic analysis method, belongs to pumped-storage power generation machine magnetic field analysis technical field.
Background technology
Hydroenergy storage station is a kind of power station of specific type, its part include upper and lower reservoir, switchyard with
And water transport channel etc..Hydroenergy storage station is made up of the unit of two kinds of working methods of water pump and the hydraulic turbine, when night is because of portion
User power utilization is divided to stop, and various large electric power plants, nuclear power significantly can not shut down or reduce generating, there is dump energy in power system
When, hydroenergy storage station can utilize these dump energies, start equipment the water of lower is extracted into eminence and be in store, Deng Dao electricity
During Force system peak of power consumption, then the water of eminence put down, drive turbine-generator units to generate electricity, electric power is sent back to power network, supplied
User power utilization, the water after generating still returns to lower.The operation of hydroenergy storage station, improve power network operational reliability, flexibly
Degree, degree of safety, economy.
Hydroenergy storage station starting and stopping block, change working and increasing, load shedding are rapid, and flexible operation is reliable, forced outage rate compared with
Low, follow load ability is strong, suitably undertakes that power system frequency modulation, emergency episode are standby and load is standby, be rotate well it is standby
With power supply, the hydroenergy storage station being had a contest apart from load center area can also make generator operation as synchronous condenser, balance system reactive power, surely
Fixed area voltage, improves operation of power networks reliability.
Hydroenergy storage station starting and stopping block, change working and increasing, load shedding are rapid, and flexible operation is reliable, forced outage rate compared with
Low, follow load ability is strong, suitably undertakes that power system frequency modulation, emergency episode are standby and load is standby, be rotate well it is standby
With power supply, the hydroenergy storage station being had a contest apart from load center area can also make generator operation as synchronous condenser, balance system reactive power, surely
Fixed area voltage, improves operation of power networks reliability.
Hydroenergy storage station can both be run under water wheels operating mode, can be run again under pump operating condition；Both it can generate electricity, can take out again
Water；Both it can be powered to power network, the electric power of power network is can absorb again；It is both power generating source, is power load again；Both power supply energy can be increased
Power, can improve network load rate again.
China develops in terms of hydroenergy storage station than later, and backward in technique in western developed country, core technology is also high
Degree relies on developed country.Current China has increased the science research input of water-storage project, but is the absence of even without can accurately divide
Separate out the effective ways of particular kind of relationship between pumped-storage power generation machine magnetic field and Damper Winding.
The content of the invention
It is an object of the invention to provide a kind of pumped-storage power generation machine Damper Winding magnetic signature analysis method, to solve mesh
It is preceding without can accurately analyze the effective ways of particular kind of relationship between pumped-storage power generation machine magnetic field and Damper Winding the problem of.
A kind of pumped-storage power generation machine Damper Winding magnetic signature analysis method comprises the following steps：
Step one, founding mathematical models and FEM model and complete emulation.
Step 2, simplifies physical model：
Using following simplification：1. stator slot effect is ignored, it is believed that magnetic field line is vertically into stator magnetic circuit；2. think along circle
Rotor and stator length after Zhou Zhankai is equal, former fan-shaped will solve domain and be reduced to rectangle；3. ferromagnetic material magnetic conductivity is ignored
Non-linear and variation with temperature, it is believed that it is constant；4. slot effect of the rotor in addition to canine tooth is ignored；5. motor side is ignored
Portion's effect, is reduced to two-dimensional magnetic field problem, and solution domain is used as using the half of realistic model.
Step 3, determines mathematical modeling：
According to the node of the mathematical notation placement model of physical model, wherein the half cycle length of equivalent rotor is：π D2/2,
Wherein D2 is rotor diameter, the external diameter semi-perimeter of rotor is corresponding be exactly last simplified model length；
According to maxwell equation group, determine inside physical model, the math equation of interface, external boundary：
In formula,
n：Normal orientation at interface
μ1、μ2：It is under the jurisdiction of the magnetic conductivity of the different mediums in both sides
A1、A2：The magnetic potential of areas at both sides
Js, the real number of electric current, plural form
w：The angular frequency of electric current
σ：Electrical conductivity
j：Imaginary number
The plural form of Vector Magnetic Field.
Step 4, to electromagnetic force suffered by the amortisseur bar in different change working transient process, Exciting Windings for Transverse Differential Protection, pole body, pole shoe
Calculated.
Step 5, Domain Decomposition Method is coupled with radial direction base element free：
Region division is carried out according to the electromagnetic property of the different zones of physical model, and by radial direction base element free application
Solve the coefficient for the RBF for drawing requirement.
Step 6, by testing the FEM model of generator motor, draws LOADING RATES and Damper Winding dynamic translation electricity
Functional relation between stream, and determine the LOADING RATES upper limit.
Step 7, interpretation of result：
The coefficient for solving the RBF drawn is substituted into RBF, the result of the point of requirement is finally obtained：Magnetic
Field distributed in three dimensions and magnetic line of force distribution.
It is preferred that：The node of mathematical notation placement model in the second step according to physical model is specially：According to mould
The electromagnetic property of the regional of type and the shape of model divided, and same electromagnetic characteristic is divided into a sub-regions,
Uniform stationing is carried out again.
It is preferred that：The rule of region division is in 3rd step：According to the characteristic and shape of model, there will be identical electricity
One piece of region division of magnetic characteristic is a class.
The present invention has the following effects that compared with existing product：Each motor is calculated in difference using the model analysis built up
The electromagnetic force of amortisseur bar, Exciting Windings for Transverse Differential Protection, pole body and pole shoe in operating mode transient process, and study different damping bar pitch and damping
Bar number is to the Damper Winding dynamic translation electric current of transient process and the influence of rotor amortisseur bar LOADING RATES；Eliminate complicated cumbersome
Network divide, program realize easier, result of calculation more accurate quick；Using the method for Region Decomposition, substantially reduce
The dimension of the big equation of final simultaneous, is more suitable for parallel computation, and the result of calculation in magnetic field can be used for follow-up electromagnetic force to calculate, and
The disequilibrium of electromagnetic force is analyzed, to judge that motor operation failure is prepared.
Embodiment
The preferred embodiment of the present invention is illustrated in detail below.
A kind of pumped-storage power generation machine Damper Winding magnetic signature analysis method of the present invention comprises the following steps：
Step one, founding mathematical models and FEM model and complete emulation.
Step 2, simplifies physical model：
Using following simplification：1. stator slot effect is ignored, it is believed that magnetic field line is vertically into stator magnetic circuit；2. think along circle
Rotor and stator length after Zhou Zhankai is equal, former fan-shaped will solve domain and be reduced to rectangle；3. ferromagnetic material magnetic conductivity is ignored
Non-linear and variation with temperature, it is believed that it is constant；4. slot effect of the rotor in addition to canine tooth is ignored；5. motor side is ignored
Portion's effect, is reduced to two-dimensional magnetic field problem, and solution domain is used as using the half of realistic model.
Step 3, determines mathematical modeling：
According to the node of the mathematical notation placement model of physical model, wherein the half cycle length of equivalent rotor is：π D2/2,
Wherein D2 is rotor diameter, the external diameter semi-perimeter of rotor is corresponding be exactly last simplified model length；
According to maxwell equation group, determine inside physical model, the math equation of interface, external boundary：
In formula,
n：Normal orientation at interface
μ1、μ2：It is under the jurisdiction of the magnetic conductivity of the different mediums in both sides
A1、A2：The magnetic potential of areas at both sides
Js, the real number of electric current, plural form
w：The angular frequency of electric current
σ：Electrical conductivity
j：Imaginary number
The plural form of Vector Magnetic Field.
Step 4, to electromagnetic force suffered by the amortisseur bar in different change working transient process, Exciting Windings for Transverse Differential Protection, pole body, pole shoe
Calculated.
Step 5, Domain Decomposition Method is coupled with radial direction base element free：
Region division is carried out according to the electromagnetic property of the different zones of physical model, and by radial direction base element free application
Solve the coefficient for the RBF for drawing requirement.
Step 6, by testing the FEM model of generator motor, draws LOADING RATES and Damper Winding dynamic translation electricity
Functional relation between stream, and determine the LOADING RATES upper limit.
Step 7, interpretation of result：
The coefficient for solving the RBF drawn is substituted into RBF, the result of the point of requirement is finally obtained：Magnetic
Field distributed in three dimensions and magnetic line of force distribution.
Further：The node of mathematical notation placement model in the second step according to physical model is specially：According to mould
The electromagnetic property of the regional of type and the shape of model divided, and same electromagnetic characteristic is divided into a sub-regions,
Uniform stationing is carried out again.
Further：The rule of region division is in 3rd step：According to the characteristic and shape of model, there will be identical electricity
One piece of region division of magnetic characteristic is a class.
Present embodiment is the exemplary illustration to this patent, does not limit its protection domain, people in the art
Member can also be changed to its part, as long as no the Spirit Essence beyond this patent, all in the protection domain of this patent.
Claims (3)
1. a kind of pumped-storage power generation machine Damper Winding magnetic signature analysis method, it is characterised in that comprise the following steps：
Step one, founding mathematical models and FEM model and complete emulation.
Step 2, simplifies physical model：
Using following simplification：1. stator slot effect is ignored, it is believed that magnetic field line is vertically into stator magnetic circuit；2. think circumferentially to open up
Rotor and stator length after opening is equal, former fan-shaped will solve domain and be reduced to rectangle；3. the non-of ferromagnetic material magnetic conductivity is ignored
Linear and variation with temperature, it is believed that it is constant；4. slot effect of the rotor in addition to canine tooth is ignored；5. motor end effect is ignored
Should, two-dimensional magnetic field problem is reduced to, solution domain is used as using the half of realistic model.
Step 3, determines mathematical modeling：
According to the node of the mathematical notation placement model of physical model, wherein the half cycle length of equivalent rotor is：π D2/2, wherein
D2 is rotor diameter, the external diameter semi-perimeter of rotor is corresponding be exactly last simplified model length；
According to maxwell equation group, determine inside physical model, the math equation of interface, external boundary：
In formula,
n：Normal orientation at interface
μ1、μ2：It is under the jurisdiction of the magnetic conductivity of the different mediums in both sides
A1、A2：The magnetic potential of areas at both sides
Js, the real number of electric current, plural form
w：The angular frequency of electric current
σ：Electrical conductivity
j：Imaginary number
The plural form of Vector Magnetic Field.
Step 4, is carried out to electromagnetic force suffered by the amortisseur bar in different change working transient process, Exciting Windings for Transverse Differential Protection, pole body, pole shoe
Calculate.
Step 5, Domain Decomposition Method is coupled with radial direction base element free：
Region division is carried out according to the electromagnetic property of the different zones of physical model, and the application of radial direction base element free is solved
Draw the coefficient of the RBF of requirement.
Step 6, by testing the FEM model of generator motor, draw LOADING RATES and Damper Winding dynamic translation electric current it
Between functional relation, and determine the LOADING RATES upper limit.
Step 7, interpretation of result：
The coefficient for solving the RBF drawn is substituted into RBF, the result of the point of requirement is finally obtained：Magnetic field three
Dimension distribution and magnetic line of force distribution.
2. a kind of pumped-storage power generation machine Damper Winding magnetic signature analysis method according to claim 1, its feature exists
In：The node of mathematical notation placement model in the second step according to physical model is specially：According to the regional of model
Electromagnetic property and the shape of model divided, same electromagnetic characteristic is divided into a sub-regions, then carries out uniform cloth
Point.
3. a kind of pumped-storage power generation machine Damper Winding magnetic signature analysis method according to claim 2, its feature exists
In：The rule of region division is in 3rd step：According to the characteristic and shape of model, by one piece with same electromagnetic characteristic
Region division is a class.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710457587.2A CN107169237A (en) | 2017-06-16 | 2017-06-16 | A kind of pumped-storage power generation machine Damper Winding magnetic signature analysis method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710457587.2A CN107169237A (en) | 2017-06-16 | 2017-06-16 | A kind of pumped-storage power generation machine Damper Winding magnetic signature analysis method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107169237A true CN107169237A (en) | 2017-09-15 |
Family
ID=59818720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710457587.2A Pending CN107169237A (en) | 2017-06-16 | 2017-06-16 | A kind of pumped-storage power generation machine Damper Winding magnetic signature analysis method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107169237A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109271684A (en) * | 2018-08-29 | 2019-01-25 | 哈尔滨工业大学 | It is a kind of for pump turbine removal of load process Dynamic Characteristics Analysis Method |
| CN109659931A (en) * | 2018-12-19 | 2019-04-19 | 南瑞集团有限公司 | A kind of variable units control method for coordinating based on Interpolation Property of Radial Basis Function model |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051749A (en) * | 2007-04-27 | 2007-10-10 | 清华大学 | Distributive analysis method of power system low frequency vibration |
| CN102855374A (en) * | 2011-11-04 | 2013-01-02 | 湖北省电力公司电力科学研究院 | Large turbogenerator magnetic field characteristic analysis method based on element-free method |
| CN105302999A (en) * | 2015-11-25 | 2016-02-03 | 哈尔滨理工大学 | Method for finding influence rule on torques and harmonic waves by negative sequence components in steam-turbine generator |
| CN106849811A (en) * | 2017-01-10 | 2017-06-13 | 国电南瑞科技股份有限公司 | A kind of water-storage variable units pump operating condition self-starting control device and its method |
-
2017
- 2017-06-16 CN CN201710457587.2A patent/CN107169237A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051749A (en) * | 2007-04-27 | 2007-10-10 | 清华大学 | Distributive analysis method of power system low frequency vibration |
| CN102855374A (en) * | 2011-11-04 | 2013-01-02 | 湖北省电力公司电力科学研究院 | Large turbogenerator magnetic field characteristic analysis method based on element-free method |
| CN105302999A (en) * | 2015-11-25 | 2016-02-03 | 哈尔滨理工大学 | Method for finding influence rule on torques and harmonic waves by negative sequence components in steam-turbine generator |
| CN106849811A (en) * | 2017-01-10 | 2017-06-13 | 国电南瑞科技股份有限公司 | A kind of water-storage variable units pump operating condition self-starting control device and its method |
Non-Patent Citations (2)
| Title |
|---|
| 戈宝军，殷继伟，陶大军等: "基于励磁与调速控制的单机无穷大系统场-路-网时步有限元建模", 《电工技术学报》 * |
| 陶大军，戈宝军，林鹏，董传友: "发电电动机静止变频器起动低频运行阶段的谐波特性", 《中国电机工程学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109271684A (en) * | 2018-08-29 | 2019-01-25 | 哈尔滨工业大学 | It is a kind of for pump turbine removal of load process Dynamic Characteristics Analysis Method |
| CN109271684B (en) * | 2018-08-29 | 2022-04-05 | 哈尔滨工业大学 | Dynamic characteristic analysis method for water pump turbine in load shedding process |
| CN109659931A (en) * | 2018-12-19 | 2019-04-19 | 南瑞集团有限公司 | A kind of variable units control method for coordinating based on Interpolation Property of Radial Basis Function model |
| CN109659931B (en) * | 2018-12-19 | 2022-06-28 | 南瑞集团有限公司 | Speed change unit coordination control method based on radial basis function interpolation model |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103559347B (en) | A kind of construction method of extensive AC and DC power system electromagnetic transient simulation model | |
| CN103020385B (en) | Based on RTDS electrical network 500kV major network modeling and simulating system | |
| CN104362622B (en) | The load model of a kind of band small power station unit area power grid and modeling method | |
| CN103199526B (en) | Short circuit power frequency electrical quantity calculating method for power system comprising doubly-fed induction generator | |
| CN105470950A (en) | Permanent-magnet direct-drive wind power plant electromagnetic transient equivalent modeling method for fault analysis | |
| CN102904246B (en) | Fast calculating method of transient stability transmission limit of point to grid power transmission system | |
| CN105205244A (en) | Closed loop operation simulation system based on electromechanical-electromagnetic hybrid simulation technology | |
| CN105162099A (en) | Operational curved surface method for determining asymmetric short-circuit current of distributed generation access power grid | |
| CN109783895A (en) | A kind of electric system hybrid simulation method and system containing distributed generation resource | |
| CN103106328A (en) | Frequency correlation network equivalence generation method based on integral vector fitting method | |
| CN104992017A (en) | Wind power random fluctuation based generalized load modeling method and apparatus | |
| CN109728597A (en) | A kind of low voltage ride through of photovoltaic inverter property fitting method and system | |
| CN107169237A (en) | A kind of pumped-storage power generation machine Damper Winding magnetic signature analysis method | |
| CN106099979A (en) | A kind of unit under-excitation ability considering that the stabilization of power grids limits analyzes method | |
| CN102868227B (en) | Medium voltage distribution-network looped-network switching operation method | |
| CN107769227A (en) | A kind of wind-powered electricity generation station equivalent modeling method suitable for subsynchronous research | |
| CN104573221A (en) | Method and device for judging wind power field cascading off-network failure in wind power accumulation area | |
| Ouyang et al. | Short-circuit current of doubly fed induction generator under partial and asymmetrical voltage drop | |
| Ćalasan et al. | The retardation method for bearings loss determination | |
| Zhang et al. | Impact of dynamic load models on transient stability-constrained optimal power flow | |
| CN104237673A (en) | Method for estimating harmonic loss of transformer | |
| CN204856067U (en) | Test system for power-in-loop digital and physical hybrid real-time simulation | |
| CN107370180B (en) | Method for quantitatively analyzing influence of wind power access on system transient stability | |
| CN110445195A (en) | The method, apparatus and system that primary frequency regulation of power network and power distribution station imbalance are administered | |
| CN201859442U (en) | Digital simulation calculating platform for water-pumping and energy-accumulating unit of power system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170915 |