CN103235187A - Testing method for determining synchronous reactance of permanent magnet generator through resistivity method - Google Patents
Testing method for determining synchronous reactance of permanent magnet generator through resistivity method Download PDFInfo
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- CN103235187A CN103235187A CN2013101512002A CN201310151200A CN103235187A CN 103235187 A CN103235187 A CN 103235187A CN 2013101512002 A CN2013101512002 A CN 2013101512002A CN 201310151200 A CN201310151200 A CN 201310151200A CN 103235187 A CN103235187 A CN 103235187A
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- synchronous reactance
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Abstract
The invention relates to a testing method for determining the synchronous reactance of a permanent magnet generator through a resistivity method. Through the testing method, the aim of determining the direct-axis synchronous reactance Xd and the quadrature-axis synchronous reactance Xq of the permanent magnet generator is fulfilled. The method comprises the following steps of drawing a running vector diagram of the resistive load of the permanent magnet generator to deduce the calculation formulae of the synchronous reactance Xd and Xq; and performing a test of stator resistance Ra, a no-load test and resistive load running of the permanent magnet generator to finally determine the direct-axis synchronous reactance Xd and the quadrature-axis synchronous reactance Xq of a winding. When the permanent magnet generator is under a resistive load, the output current and voltage directions are the same, i.e., a vector included angle is 0 degree. When the permanent magnet generator is under a pure resistance load running state, the tested synchronous reactance has a contribution to the analysis and research of the running characteristic of such a working condition.
Description
Technical field
The present invention relates to a kind of method of testing of determining the magneto synchronous reactance by electric-resistivity method.
Background technology
Magneto alternator is one of most important equipment in the wind-powered electricity generation unit, and the magneto synchronous reactance is to generator stable operation analysis, fault analysis and safeguard and overhaul all have vital role.Simultaneously, the magneto synchronous reactance is to set up the magneto mathematical model, carries out prerequisite and the basis of computer control and analysis.
Because the excitation of magneto is constant, different with the type of conventional generator, the method for analyzing and testing its synchronous reactance has certain degree of difficulty, does not also have the method for testing at the magneto synchronous reactance at present.
Summary of the invention
The present invention seeks to set up the method for testing of determining the magneto synchronous reactance by electric-resistivity method, by this method of testing, reach the purpose of determining magneto direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq.Technical scheme of the present invention is: a kind of method of testing of determining the magneto synchronous reactance by electric-resistivity method, it is characterized in that: adopt the operation of magneto strip resistance load, and finally determine magneto direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq, the operation equation of magneto alternator resistive load and the computing formula of Xd, Xq are:
X
d＝（E
0－U·cosθ－I·cos(θ＋φ)·R
a）／I·sin(θ＋φ)
（1）
X
q＝（U·sinθ＋I·sin(θ＋φ)·R
a）／I·cos(θ＋φ)
（2）
In the formula:
I-magneto stator current;
U-terminal voltage;
E0-no-load emf;
Ra-stator resistance;
φ-power-factor angle;
θ-merit angle;
Id-direct-axis current;
Iq-friendship shaft current.
Operation by the load of magneto strip resistance, electric parameter stator current I, terminal voltage U, no-load emf E0, stator resistance Ra, power-factor angle φ, the merit angle θ of test, utilize formula (1), formula (2), and finally determine the value of direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq, concrete steps are as follows:
Step 1, carry out the test of stator resistance Ra: stator resistance Ra is one of inscape of magneto vector plot, tests out its phase resistance, and carries out suitable correction according to temperature, so that when synchronous reactance is calculated, considers the influence of stator resistance;
Step 2, the no-load test of carrying out: test no-load characteristic, no-load emf E
0And initial position angle: magneto is under different rotating speeds, and its no-load emf difference, synchronous reactance also change thereupon, and the initial position angle under the zero load must be at first tested at the merit angle when determining load, i.e. angle between unloaded next phase voltage and the rotor-position;
Step 3, carry out resistive load test: magneto stator current I, terminal voltage U, power-factor angle φ, merit angle θ when measuring resistive load;
Step 4, according to above method of testing, obtain each computing parameter, utilize formula (1), formula (2), determine winding direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq.
Be not incorporated into the power networks under a lot of situations of magneto, but magneto is with the pure resistor load operation separately.During the magneto resistive load, output current is identical with voltage direction, and namely vector angle is 0 degree.Under the operation of magneto band pure resistor load, the synchronous reactance of test helps the operation characteristic of this operating mode is analyzed and researched.
Description of drawings
Fig. 1: operation vector plot during the magneto resistive load.
Embodiment
As shown in Figure 1, the operation vector plot during for the magneto resistive load, the magneto excitation produces magnetic field by fixing magnet steel, if its rotating speed is constant, it is constant that magnet steel produces the magnetic induction size in magnetic field.During the magneto resistive load, output current is identical with voltage direction, and namely vector angle is 0 degree.
The vector plot of magneto during based on the three-phase steady-state short-circuit, set up a kind of method of testing of determining the magneto synchronous reactance by electric-resistivity method, it is characterized in that: adopt the operation of magneto strip resistance load, and finally determine magneto direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq, the operation equation of magneto alternator resistive load and the computing formula of Xd, Xq:
X
d＝（E
0－U·cosθ－I·cos(θ＋φ)·R
a）／I·sin(θ＋φ)
（1）
X
q＝（U·sinθ＋I·sin(θ＋φ)·R
a）／I·cos(θ＋φ)
（2）
In the formula:
I-magneto stator current;
U-terminal voltage;
E0-no-load emf;
Ra-stator resistance;
φ-power-factor angle;
θ-merit angle;
Id-direct-axis current;
Iq-friendship shaft current.
Operation by the load of magneto strip resistance, electric parameter stator current I, terminal voltage U, no-load emf E0, stator resistance Ra, power-factor angle φ, the merit angle θ of test, and finally determine the value of direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq, concrete steps are as follows:
Step 1, carry out the test of stator resistance Ra: stator resistance Ra is one of inscape of magneto vector plot, tests out its phase resistance, and carries out suitable correction according to temperature.So that when synchronous reactance is calculated, consider the influence of stator resistance.Minitype permanent magnetism generator unit stator direct current resistance is bigger, when testing and calculating, must consider the influence of stator direct current resistance, just can accurately determine synchronous reactance;
Step 2, the no-load test of carrying out: the test no-load characteristic, determine no-load emf E
0And initial position angle.No-load curve is the basic map of magneto, different with the no-load curve of conventional excitation generator, the magneto no-load curve is the relation curve of rotating speed and no-load voltage, and it is straight line, has directly reacted the size of different rotating speeds lower magnetic steel magnetic pole generation electromotive force.No-load characteristic is the reaction of the operation mechanism of magneto, synchronous reactance determine to depend on no-load curve;
Step 3, carry out resistive load test: magneto stator current I, terminal voltage U, power-factor angle φ, merit angle θ when measuring resistive load.Utilize measuring accuracy to be higher than 0.5 grade electric quantity test instrument, can directly test stator current I, terminal voltage U, power-factor angle φ.Merit angle θ is angle poor of two tests, i.e. initial position angle under a phase voltage of testing during load and the zero load of the angle between the rotor-position and test (angle between unloaded same phase voltage down and the rotor-position) poor;
Step 4, according to above method of testing, obtain each computing parameter, utilize formula (1), formula (2), determine winding direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq.
Claims (1)
1. method of testing of determining the magneto synchronous reactance by electric-resistivity method, it is characterized in that: adopt the operation of magneto strip resistance load, and finally determine magneto direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq, the operation equation of magneto alternator resistive load and the computing formula of Xd, Xq are:
X
d＝（E
0－U·cosθ－I·cos(θ＋φ)·R
a）／I·sin(θ＋φ)
（1）
X
q＝（U·sinθ＋I·sin(θ＋φ)·R
a）／I·cos(θ＋φ)
（2）
In the formula:
I-magneto stator current;
U-terminal voltage;
E0-no-load emf;
Ra-stator resistance;
φ-power-factor angle;
θ-merit angle;
Id-direct-axis current;
Iq-friendship shaft current
Operation by the load of magneto strip resistance, electric parameter stator current I, terminal voltage U, no-load emf E0, stator resistance Ra, power-factor angle φ, the merit angle θ of test, and finally determine the value of direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq, concrete steps are as follows:
Step 1, carry out the test of stator resistance Ra: stator resistance Ra is one of inscape of magneto vector plot, tests out its phase resistance, and carries out suitable correction according to temperature, so that when synchronous reactance is calculated, considers the influence of stator resistance;
Step 2, the no-load test of carrying out: test no-load characteristic, no-load emf E
0And initial position angle: magneto is under different rotating speeds, and its no-load emf difference, synchronous reactance also change thereupon, and the initial position angle under the zero load must be at first tested at the merit angle when determining load, i.e. angle between unloaded next phase voltage and the rotor-position;
Step 3, carry out resistive load test: magneto stator current I, terminal voltage U, power-factor angle φ, merit angle θ when measuring resistive load, determine magneto direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq;
Step 4, according to above method of testing, obtain each computing parameter, utilize formula (1), formula (2), determine winding direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883566A (en) * | 2019-03-29 | 2019-06-14 | 四川长虹空调有限公司 | Electromotor winding temperature detection method based on magnetic flux |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6300776B1 (en) * | 1997-12-10 | 2001-10-09 | Endress + Hauser Gmbh + Co. | Method and device for discrete-time reactance measurement |
| CN1710439A (en) * | 2005-05-30 | 2005-12-21 | 沈阳工业大学 | Apparatus for testing reactance parameter of permanent magnet motor based on voltage integration |
| CN101291061A (en) * | 2008-05-16 | 2008-10-22 | 南京南瑞继保电气有限公司 | Status estimating method for dynamic process of electrical power system |
| CN101430365A (en) * | 2008-12-12 | 2009-05-13 | 南京工程学院 | Identification system and method for actually measured electric parameter of synchronous generator |
| CN101957884A (en) * | 2010-03-01 | 2011-01-26 | 南京航空航天大学 | Modeling method of power generating system of mixed excited synchronous motor |
| CN102495287A (en) * | 2011-11-30 | 2012-06-13 | 徐州中矿大传动与自动化有限公司 | Measurement method based on quadrature axis reactance measurement device of permanent-magnet synchronous motor |
| CN102520353A (en) * | 2011-12-09 | 2012-06-27 | 清华大学 | Synchronous generator model parameter multi-step identification method |
-
2013
- 2013-04-27 CN CN2013101512002A patent/CN103235187A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6300776B1 (en) * | 1997-12-10 | 2001-10-09 | Endress + Hauser Gmbh + Co. | Method and device for discrete-time reactance measurement |
| CN1710439A (en) * | 2005-05-30 | 2005-12-21 | 沈阳工业大学 | Apparatus for testing reactance parameter of permanent magnet motor based on voltage integration |
| CN101291061A (en) * | 2008-05-16 | 2008-10-22 | 南京南瑞继保电气有限公司 | Status estimating method for dynamic process of electrical power system |
| CN101430365A (en) * | 2008-12-12 | 2009-05-13 | 南京工程学院 | Identification system and method for actually measured electric parameter of synchronous generator |
| CN101957884A (en) * | 2010-03-01 | 2011-01-26 | 南京航空航天大学 | Modeling method of power generating system of mixed excited synchronous motor |
| CN102495287A (en) * | 2011-11-30 | 2012-06-13 | 徐州中矿大传动与自动化有限公司 | Measurement method based on quadrature axis reactance measurement device of permanent-magnet synchronous motor |
| CN102520353A (en) * | 2011-12-09 | 2012-06-27 | 清华大学 | Synchronous generator model parameter multi-step identification method |
Non-Patent Citations (3)
| Title |
|---|
| 丁孝华等: "一种同步发电机功角测量的同步电抗折算法", 《电网技术》, vol. 30, 31 October 2006 (2006-10-31) * |
| 张卓然等: "混合励磁同步电机电抗计算与建模", 《南京航空航天大学学报》, vol. 42, no. 2, 30 April 2010 (2010-04-30) * |
| 李春艳: "高凸极率永磁同步发电机电抗参数计算与测试", 《黑龙江大学工程学报》, vol. 3, no. 1, 29 February 2012 (2012-02-29) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883566A (en) * | 2019-03-29 | 2019-06-14 | 四川长虹空调有限公司 | Electromotor winding temperature detection method based on magnetic flux |
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Application publication date: 20130807 |