CN105785188B - A kind of large capacity phase modifier test method smaller to electric network influencing - Google Patents
A kind of large capacity phase modifier test method smaller to electric network influencing Download PDFInfo
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- CN105785188B CN105785188B CN201610222684.9A CN201610222684A CN105785188B CN 105785188 B CN105785188 B CN 105785188B CN 201610222684 A CN201610222684 A CN 201610222684A CN 105785188 B CN105785188 B CN 105785188B
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- 239000003607 modifier Substances 0.000 title claims abstract description 109
- 238000010998 test method Methods 0.000 title claims abstract description 10
- 238000012360 testing method Methods 0.000 claims abstract description 38
- 238000002474 experimental method Methods 0.000 claims abstract description 9
- 230000005284 excitation Effects 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 238000011161 development Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The invention discloses a kind of large capacity phase modifier phase modulation test methods smaller to electric network influencing,It is proposed that phase modifier should be carried out when carrying out phase modulation experiment under conditions of same two phase modifiers of busbar are run simultaneously,When one phase modifier carries out stagnant phase study,Another development Under-excitation Operation Test,Leading phase test phase modifier provides network voltage relatively low power grid environment for stagnant phase study phase modifier in this way,The phase modifier for equally carrying out stagnant phase study provides network voltage higher power grid environment for leading phase test phase modifier,Avoid when phase modifier set end voltage reaches lower limit or stagnant phase study when network voltage is not high enough during leading phase test that set end voltage reaches the upper limit when network voltage is not low enough,The present invention enables to phase modulation function to obtain due phase modulation performance by testing,The influence to network voltage is reduced when testing simultaneously to a certain extent,It has a good application prospect.
Description
Technical field
The present invention relates to a kind of large capacity phase modifier test methods smaller to electric network influencing, belong to source net coordination technique neck
Domain.
Background technology
With a large amount of inputs of extra-high voltage direct-current long distance transmission line, circuit easily generates idle insufficient, electricity when overloaded
Relatively low problem is pressed, and then idle surplus, voltage are higher at light load, therefore the receiving end power grid of the intensive drop point of extra-high voltage direct-current, voltage
Stable problem is increasingly prominent, becomes the new stable form for restricting operation of power networks.Phase modulation function allows its mistake in network load weight
Operation is encouraged, increases the reactive current component lagged in power transmission line, so as to reduce line drop；In the situation of power transmission line underloading
Under, it allows its underexcited operation, absorbs the reactive current of lag, can prevent network voltage from rising, so as to maintain the voltage of power grid one
In fixed level, it is seen that phase modifier can solve receiving end power grid dynamic reactive deficiency, weak sending end grid short circuit capacity underbraced etc.
Various types of Voltage-stabilizing Problems can provide important support for following operation of power networks.Guo Wang companies have accelerated to promote and adjust at present
The engineer application of camera, dynamic reactive deficiency caused by solving the problems, such as UHV transmission.
However, the phase modifier with early stage has been gradually backed out operation of power networks, operation and phase modulation ability test to phase modifier
The fewer and fewer and new phase modifier voltage class of experience and capacity cannot be mentioned in the same breath with the phase modifier run before, have
Necessity conducts a research for the current phase modifier method of operation and phase modulation test method etc..Wherein phase modulation ability test is to determine phase modulation
The important evidence of machine phase modulation ability, unreasonable test method may be decreased phase modulation ability of phase modifier itself, can draw when serious
Play equipment damage.In addition, the phase modifier capacity currently to put into operation is larger, it is 300Mvar, carries out under the conditions of normal operation of power networks
Phase modulation ability test will cause the fluctuation of network voltage, influence the stable of power grid.
Invention content
It is an object of the invention to overcome deficiency of the prior art, a kind of large capacity tune smaller to electric network influencing is provided
Camera test method can give full play to the influence of the due phase modulation performance of unit and reduction to network voltage, so as to conscientiously
Solution dynamic reactive it is insufficient the technical issues of.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of great Rong smaller to electric network influencing
Phase modifier test method is measured, is included the following steps：
Step 1：Under the experimental condition that two phase modifiers are run simultaneously on same busbar：A wherein phase modifier is opened
Stagnant phase study is opened up, while leading phase test is carried out to another phase modifier,
Step 2：The reactive power of two phase modifiers of alternate change：When the electric parameter or temperature of wherein one phase modifier
When parameter reaches parameter limit value, make the phase modifier stable operation under current working；Meanwhile another at this time phase modifier of record
Operating condition is denoted as operating mode one；
Step 3：Continue to test another phase modifier, until its electric parameter or temperature parameter also reach parameter
Limit value makes its stable operation be reached under limit operating mode in parameter；
Step 4：Excitation reverse operating is carried out for the phase modifier that limit is reached after parameter in step 3, is restored into step 2
For the moment, two phase modifiers start alternately inverted operation to the operating mode of record；
Step 5：When two phase modifier reactive powers are restored to original state, stagnant phase study phase modifier proceeds by
Leading phase test, leading phase test phase modifier proceed by stagnant phase study, step 2 ~ step 3 are repeated, so as to obtain two phase modifiers
Phase modulation ability.
The electric parameter includes：Excitation voltage, exciting current, set end voltage, generator terminal electric current, system voltage and power because
Number angle.
The temperature parameter includes the iron core temperature and coil temperature of phase modifier.
Compared with prior art, the advantageous effect that is reached of the present invention is：Iing is proposed should be when phase modifier carries out phase modulation experiment
Carry out under conditions of being run simultaneously with two phase modifiers of busbar, when a phase modifier carries out stagnant phase study, another development
Under-excitation Operation Test, such leading phase test phase modifier provide network voltage relatively low power grid environment for stagnant phase study phase modifier, together
The phase modifier that sample carries out stagnant phase study provides network voltage higher power grid environment for leading phase test phase modifier, avoids leading phase test
When phase modifier set end voltage reaches lower limit or stagnant phase study when network voltage is not high enough when network voltage is not low enough machine
Terminal voltage reaches the upper limit, and the present invention enables to phase modulation function to obtain due phase modulation performance by testing, while one when testing
Determine to reduce the influence to network voltage in degree, have a good application prospect.
Description of the drawings
Fig. 1 is the flow chart of the present invention.
Armature-reaction polar plot during Fig. 2 phase modifier lagging phase operations.
Armature-reaction polar plot during Fig. 3 phase modifier leading phase operations.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and be not intended to limit the protection scope of the present invention and limit the scope of the invention.
A kind of large capacity phase modifier phase modulation test method smaller to electric network influencing of the present invention proposes that phase modifier is carried out and adjusts
It should carry out under conditions of same two phase modifiers of busbar are run simultaneously during phase study, when a phase modifier carries out stagnant phase study, separately
One development Under-excitation Operation Test, such leading phase test phase modifier provide network voltage relatively low power grid for stagnant phase study phase modifier
Environment, the phase modifier for equally carrying out stagnant phase study provide network voltage higher power grid environment, avoid for leading phase test phase modifier
When phase modifier set end voltage reaches lower limit or stagnant phase study when network voltage is not high enough during leading phase test because of network voltage not
It is enough low and set end voltage reaches the upper limit so that phase modulation function obtains due phase modulation performance by testing, while while testing is certain
The influence to network voltage is reduced in degree.
Specifically include following steps：
Step（1）：To large capacity phase modifier, it should determine that whether same busbar has another phase modifier first, this method is only fitted
There is the phase modifier of two phase modifier operations for same busbar；
Step（2）：Two phase modifiers of reply complete test connection before experiment, and measuring power angle need to connect key signal and generator terminal
Voltage, and generator rotor angle zero measurement is completed in unit light condition, it is practical in unit operation to measure phase modifier operation generator rotor angle, other
The electric parameters such as set end voltage, generator terminal electric current, excitation voltage, exciting current, system voltage and phase modifier iron core temperature, coil
The associated temperatures such as temperature parameter can be read from monitored picture, but ensure that all recording parameters are correct；
Step（3）：Certain phase modifier carries out stagnant phase study, while carries out leading phase test for another phase modifier；Experiment
In the process, phase modifier often changes the idle of certain capacity, just records a data, two phase modifier operations are alternately；Assuming that A
Phase modifier carries out stagnant phase study, and B phase modifiers carry out leading phase test, original state A, B phase modifier is idle two tune of record when being 0
Camera operating parameter, A phase modifiers are idle rising 20%Sn（It can also be 10%Sn or fix a numerical value 50Mvar）It is idle, note
A data are recorded, B phase modifiers are idle decline 20%Sn records a data, and A phase modulation is risen idle 20%Sn ... and replaced with this again
It carries out.
Step（4）：When recording two phase modifier parameters, the variation of two phase modifier electric parameters and temperature parameter is observed,
Attack parameter must not be higher than parameter upper limit, and drawdown parameter must not be less than parameter lower limit.Armature is anti-when Fig. 2 is phase modifier lagging phase operation
Polar plot is answered, phase modifier was in the state of encouraging at this time, and excitation voltage, exciting current rise, idle, set end voltage, generator terminal electric current
It is in propradation, core portion temperature temperature rise when electric current increases, therefore possible limiting factor during lagging phase operation
For：Excitation voltage, exciting current, idle, set end voltage, iron core temperature etc..Armature-reaction is sweared when Fig. 3 is phase modifier leading phase operation
Spirogram, at this time phase modifier be in underexcitation state, excitation voltage, exciting current, idle, set end voltage are in decline state, and work(
Angle is to rise, and in addition since brow leakage increases during leading phase operation, core end structural member portion temperature rises, therefore into phase
Possible limiting factor is during operation：Lower limiting value, generator rotor angle, end core temperature of set end voltage etc..When having, phase modifier parameter is first
It reaches the full quota, then the phase modifier completes the phase modulation experiment of a part, and Simultaneous Stabilization is run in the operating mode, and another phase modifier is then
Continue to test, until parameter is up to limit, after stable operation for a period of time, two units complete the phase modulation experiment of half；Such as into phase
After generator rotor angle reaches limit value in experiment, leading phase test phase modifier is then run in the stable conditions, and stagnant phase study phase modifier then continues
Often increase the idle of 20%Sn, record primary parameter, until reaching the full quota.
Step（5）：Excitation reverse operating is first carried out for the rear phase modifier for reaching limit, reaches and is first reached in limited time up to limit phase modifier,
After the operating condition for reaching limit phase modifier afterwards, two phase modifier the other half phase modulation experiments are carried out in two alternately inverted operations of phase modifier,
Repeat step（4）, so as to obtain the phase modulation ability of two units.Step（4）In middle example, stagnant phase study phase modifier should be reduced first
It is idle to leading phase test phase modifier parameter up in limited time the phase modifier operating mode, the then alternately inverted operation of two phase modifiers, two phase modulation
Machine is idle be down to 0 after, stagnant phase study phase modifier proceeds by leading phase test, and leading phase test phase modifier proceeds by stagnant phase examination
It tests, repeats step（4）Test process.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (1)
1. a kind of large capacity phase modifier test method smaller to electric network influencing, which is characterized in that include the following steps：
Step 1：Under the experimental condition that two phase modifiers are run simultaneously on same busbar：A wherein phase modifier is carried out stagnant
Phase study, while leading phase test is carried out to another phase modifier,
Step 2：The reactive power of two phase modifiers of alternate change：When the electric parameter or temperature parameter of wherein one phase modifier
When reaching parameter limit value, make the phase modifier stable operation under current working；Meanwhile record the operation of another at this time phase modifier
Operating mode is denoted as operating mode one；
Step 3：Continue to test another phase modifier, until its electric parameter or temperature parameter also reach parameter limit value,
Its stable operation is made to be reached under limit operating mode in parameter；
Step 4：Excitation reverse operating is carried out for the phase modifier that limit is reached after parameter in step 3, restores to record into step 2
Operating mode for the moment, two phase modifiers start alternately inverted operation；
Step 5：When two phase modifier reactive powers are restored to original state, stagnant phase study phase modifier is proceeded by into phase
Experiment, leading phase test phase modifier proceed by stagnant phase study, step 2 ~ step 3 are repeated, so as to obtain the tune of two phase modifiers
Phase ability；
The electric parameter includes：Excitation voltage, exciting current, set end voltage, generator terminal electric current, system voltage and power factor
Angle；
The temperature parameter includes the iron core temperature and coil temperature of phase modifier.
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| CN201610222684.9A CN105785188B (en) | 2016-04-12 | 2016-04-12 | A kind of large capacity phase modifier test method smaller to electric network influencing |
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| CN105785188B true CN105785188B (en) | 2018-06-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106849059A (en) * | 2017-01-16 | 2017-06-13 | 国网江苏省电力公司电力科学研究院 | Generating set under-excitation ability method for digging based on analog simulation |
| CN107085161B (en) * | 2017-04-28 | 2019-06-07 | 国家电网公司 | A kind of large size phase modifier-transformer group scene steady-state short-circuit characteristic test method |
| CN108092274B (en) * | 2017-12-05 | 2021-07-02 | 国电南瑞科技股份有限公司 | Phase modulator excitation system control method based on voltage and reactive power double closed-loop control |
| CN111490708B (en) * | 2020-04-21 | 2020-12-15 | 新疆大学 | Double-shaft excitation device of synchronous phase modulator and adjusting method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105226710A (en) * | 2015-10-20 | 2016-01-06 | 国家电网公司 | Based on the generating set under-excitation ability dynamical min method of measured data |
| CN105337318A (en) * | 2015-10-20 | 2016-02-17 | 国家电网公司 | Phase modulation operation capability test method and system for wind turbine generators |
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| JP2008259298A (en) * | 2007-04-04 | 2008-10-23 | Honda Motor Co Ltd | Motor |
| JP2009159760A (en) * | 2007-12-27 | 2009-07-16 | Honda Motor Co Ltd | Electric motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226710A (en) * | 2015-10-20 | 2016-01-06 | 国家电网公司 | Based on the generating set under-excitation ability dynamical min method of measured data |
| CN105337318A (en) * | 2015-10-20 | 2016-02-17 | 国家电网公司 | Phase modulation operation capability test method and system for wind turbine generators |
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