CN110311602A - A kind of field regulator is low to encourage limitation optimization setting method and system - Google Patents
A kind of field regulator is low to encourage limitation optimization setting method and system Download PDFInfo
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- CN110311602A CN110311602A CN201910519384.0A CN201910519384A CN110311602A CN 110311602 A CN110311602 A CN 110311602A CN 201910519384 A CN201910519384 A CN 201910519384A CN 110311602 A CN110311602 A CN 110311602A
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- low
- limitation
- value
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- encouraging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors
- H02H7/065—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors against excitation faults
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/006—Means for protecting the generator by using control
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
Abstract
The invention discloses a kind of low encourage of field regulator to limit optimization setting method and system, passes through generator unit leading phase test and obtains under-excitation ability value of the unit under different active operating conditions；According to the producer of field regulator, model, obtain the low calculation formula for encouraging limitation acting characteristic, it calculates and low encourages limitation action value, it is idle to reduce unit, limitation movement is encouraged until low, if the low limitation action value and the low deviation for encouraging limitation actual act value of encouraging calculated is more than the range set, calculation formula is adjusted and recalculates and low encourage limitation action value, until deviation is in the range of setting, it is equal to or approaches that the adjusting of unit under-excitation ability value is low encourages limitation definite value with the low limitation action value of encouraging of calculating；Adjust it is low encourage limitation definite value after, by the fine tuning of unit leading phase test adjusted it is low encourage limitation definite value, until the practical low error for encouraging limitation action value and under-excitation ability value within the allowable range.The present invention can guarantee unit safe leading phase operation within under-excitation ability.
Description
Technical field
The present invention relates to source net coordination technique fields, and in particular to a kind of field regulator is low to encourage limitation optimization setting method
And system.
Background technique
It is low to encourage limitation also known as underexcitation limitation, it is the important auxiliary link of field regulator, main function is to prevent generator
Cause unit unstability or excitation are horizontal too low field loss protection to be caused to act into mutually too deep.If it is low encourage limitation setting it is unreasonable, can
Field loss protection can be caused to malfunction or limit the performance of unit under-excitation ability, also interference power system stabilizer, PSS (Power
System Stabilizer, PSS) characteristic, to system stabilization adversely affect.
The previous low principle for encouraging limitation adjusting be it is low encourage limitation operation curve should be by the quiet steady pole of generator difference active power
Limit and fever condition determine, and pay attention to the cooperation with field loss protection.But low to encourage limitation fixed with steady state stability limit rounding in field loss protection
Principle is almost the same, low encourages limitation definite value and field loss protection definite value does not ensure that and low encourages limitation according to what the same principle determined
The movement of field loss protection in advance；And when idle decline approach it is low encourage limitation or field loss protection operation curve when, it is inevitable with generator terminal
The decline of voltage, set end voltage declines so that the low actual act value for encouraging limitation and field loss protection is in advance in practical definite value, and
And the two, with the decline of set end voltage, the amplitude of variation is not identical, and low limitation definite value of encouraging only is set in field loss protection
Do not ensure that low encourage limits prior to field loss protection movement when unit actual motion on definite value.
2016 professional standard " DL/T 1523-2016 generating set leading phase test directive/guide " propose it is low encourage limitation adjusting be
A part of leading phase test, and low encourage limits and should adjust within the scope of the under-excitation ability of actual measurement.Since the under-excitation ability of actual measurement exists
Situations such as generator steady state stability limit, field loss protection, temperature rise and station-service voltage have been comprehensively considered in generating set leading phase test,
It can ensure that generating set is safely operated within the scope of generating set under-excitation ability.Low encourage is adjusted within the scope of under-excitation ability to limit calmly
Value, enables to unit advancement before reaching unit under-excitation ability, avoids unit from running to dangerous outside under-excitation ability
Region, it is ensured that unit leading phase operation safety.But the low limitation setting principle of encouraging is due to factors such as set end voltage declines, low to encourage limit
System is acted in setting valve in advance, is caused unit that cannot give full play to its due under-excitation ability, is unfavorable between power grid low-load period
It is idle to absorb grid excess, or even Over High-Limit Voltage is caused to run, brings adverse effect to the safe operation of power grid.
Through the above description, current low two kinds of setting method one kind for encouraging limitation adjusting are adjusted by steady state stability limit, by
In it is low encourage limitation action value and setting valve there are deviation, field loss protection action value and setting valve there is also deviations, it is not easy to and lose
Magnetic protection rationally cooperation；Another then adjust within the scope of the under-excitation ability of actual measurement, this method is relatively conservative, be unfavorable for unit into
Phase ability gives full play to, it is necessary to which the low actual conditions for encouraging limitation from unit operation propose more reasonable adjusting
Method.
Summary of the invention
To solve deficiency in the prior art, the present invention provides a kind of low encourage of field regulator and limits optimization setting method,
Not only it had been avoided that the problem difficult with field loss protection cooperation, but also unit under-excitation ability can be given full play to, had a good application prospect.
In order to achieve the above objectives, the present invention adopts the following technical scheme: a kind of field regulator it is low encourage limitation optimization it is whole
Determine method, it is characterised in that: comprising steps of
Step 1: compare generator unit reduce it is idle until field regulator is low encourage limitation movement when obtained Excitation Adjustment
Section device it is low encourage limitation actual act value and calculating it is low encourage limitation action value deviation whether be more than the range of setting, if being more than,
Then adjust it is low encourage limitation action value calculation formula, the deviation is final low until obtaining in the range of setting again
Limitation action value calculation formula is encouraged, low limitation action value calculation formula encouraged according to final and low encourages limitation action value etc. with what is calculated
In or approach the adjusting of unit under-excitation ability value and low encourage limitation definite value；The low of the calculating encourages limitation action value to encourage limitation dynamic according to low
The calculation formula for making characteristic is calculated；
Step 2: adjusting is low encourage limitation definite value after, low encouraged again by what the fine tuning of generator unit leading phase test had been adjusted
Limit definite value, until the practical low error for encouraging limitation action value and under-excitation ability value within the allowable range.
A kind of field regulator above-mentioned is low to encourage limitation optimization setting method, it is characterized in that: the under-excitation ability value are as follows: into
When phase unit it is idle decrease up to any parameter of generator limiting factor reach limit value without work value.
A kind of field regulator above-mentioned is low to encourage limitation optimization setting method, it is characterized in that: the generator limiting factor
Set end voltage, steady state stability limit, generator terminal electric current, temperature, station-service voltage, system voltage including generator.
A kind of field regulator above-mentioned is low to encourage limitation optimization setting method, it is characterized in that: the step 1 detailed process
Are as follows:
(1) according to the producer of field regulator, model, the low calculation formula for encouraging limitation acting characteristic is obtained；
(2) by low limitation fixed value adjusting of encouraging in under-excitation ability value, by calculation formula calculate it is low encourage limitation action value, pass through
Idle to calculated low encourage of test unit is slowly reduced to limit near action value, verifying is low to encourage whether limitation correctly acts, if
It is not operating before under-excitation ability value without work value, raise it is low encourage limitation setting valve, it is idle to reduce unit again, until low, to encourage limitation dynamic
Make, if the low limitation actual act value and calculated low limitation action value deviation of encouraging of encouraging is more than setting range, to adjustment of field excitation
Low encourages of device limits the fixed idle deviant adjustment of acting characteristic formula superposition, until calculated low encourage limits action value and reality
It is low encourage limitation action value error in the range of setting until, obtain final calculation formula；
(3) the low action value for encouraging limitation of calculating is set as or is approached as far as possible unit under-excitation ability value, according to final
Calculation formula calculate and low encourage limitation definite value.
A kind of field regulator above-mentioned is low to encourage limitation optimization setting method, it is characterized in that: the step 2 detailed process
Are as follows: adjusting is low encourage limitation definite value after, it is idle slowly to reduce unit under the definite value, until low encourage limitation movement, if in this process
In, low not operating, or more movement in advance of encouraging limitation, finely tune again it is low encourage limitation definite value, until low encourage limitation actual act value
It is close with unit under-excitation ability value.
A kind of field regulator above-mentioned is low to encourage limitation optimization setting method, it is characterized in that: the reduction unit it is idle
Reduce it is idle during, it is minimum idle to exceed unit under-excitation ability.
A kind of field regulator is low to encourage limitation optimization adjusting system characterized by comprising
It adjusts low encourage and limits definite value module, the reduction of generator unit is idle to encourage limitation until field regulator is low for comparing
The field regulator obtained when movement is low encourage limitation actual act value and calculating the low deviation for encouraging limitation action value whether be more than
The range of setting adjusts low encourage and limits action value calculation formula, the deviation is until the model in setting again if being more than
It in enclosing, obtains final low encourage and limits action value calculation formula, according to final low limitation action value calculation formula of encouraging to calculate
It is low encourage limitation action value and be equal to or approach the adjusting of unit under-excitation ability value low encourage limitation definite value；To encourage limitation dynamic for the calculating low
Work value is calculated according to the low calculation formula for encouraging limitation acting characteristic；
It finely tunes low encourage adjusted and limits definite value module, it is low for having been adjusted by the fine tuning of generator unit leading phase test
Encourage limitation definite value, until the practical low error for encouraging limitation action value and under-excitation ability value within the allowable range.
A kind of field regulator above-mentioned is low to encourage limitation optimization adjusting system, which is characterized in that the adjusting is low to encourage limitation
Definite value detailed process are as follows:
(1) according to the producer of field regulator, model, the low calculation formula for encouraging limitation acting characteristic is obtained；
(2) by low limitation fixed value adjusting of encouraging in under-excitation ability value, by calculation formula calculate it is low encourage limitation action value, pass through
Idle to calculated low encourage of test unit is slowly reduced to limit near action value, verifying is low to encourage whether limitation correctly acts, if
It is not operating before under-excitation ability value without work value, raise it is low encourage limitation setting valve, it is idle to reduce unit again, until low, to encourage limitation dynamic
Make, if the low limitation actual act value and calculated low limitation action value deviation of encouraging of encouraging is more than setting range, to adjustment of field excitation
Low encourages of device limits the fixed idle deviant adjustment of acting characteristic formula superposition, until calculated low encourage limits action value and reality
It is low encourage limitation action value error in the range of setting until, obtain final calculation formula；
(3) the low action value for encouraging limitation of calculating is set as or is approached as far as possible unit under-excitation ability value, according to final
Calculation formula calculate and low encourage limitation definite value.
A kind of field regulator above-mentioned is low to encourage limitation optimization adjusting system, which is characterized in that the fine tuning had been adjusted
It is low to encourage limitation definite value, detailed process are as follows: adjusting it is low encourage limitation definite value after, under the definite value by slowly reduce unit it is idle, directly
Limitation movement is encouraged to low, if in the process, low not operating, or more movement in advance of encouraging limitation finely tunes that low to encourage limitation fixed again
Value, until low limitation actual act value of encouraging is approached with unit under-excitation ability value.
A kind of field regulator above-mentioned is low to encourage limitation optimization adjusting system, which is characterized in that and the reduction unit is idle,
It is minimum idle to exceed unit under-excitation ability during reducing idle.
Advantageous effects of the invention: the present invention is idle until field regulator by comparing the reduction of generator unit
It is low to encourage the low low deviation for encouraging limitation action value for encouraging limitation actual act value and calculating of the field regulator obtained when limitation movement
Whether be more than setting range, if being more than, adjust it is low encourage limitation action value calculation formula, again the deviation until
It in the range of setting, obtains final low encourage and limits action value calculation formula, public affairs are calculated according to final low limitation action value of encouraging
Formula with calculate it is low encourage limitation action value and be equal to or approach the adjusting of unit under-excitation ability value low encourage limitation definite value；It adjusts and low encourages limitation
After definite value, again by the fine tuning of generator unit leading phase test adjusted it is low encourage limitation definite value, low to encourage limitation dynamic until practical
The error of work value and under-excitation ability value is within the allowable range；Optimize it is low encourage limitation definite value, so that reaching low encourages limitation and loss of excitation
Protection cooperation is reasonable, and gives full play to unit under-excitation ability, can guarantee unit safe leading phase operation within under-excitation ability
Purpose, the popularization of this method not only contribute to the performance of unit under-excitation ability, can also improve unit safety operation level, are a kind of
Thing very significant and with economic value, has a good application prospect.
Detailed description of the invention
Fig. 1 is the flow chart of the method for the present invention；
Fig. 2 be certain unit under-excitation ability value, it is low encourage limitation action value calculated curve figure；
Fig. 3 be optimization certain unit it is low encourage limitation setting valve, it is low encourage limitation movement calculated value curve graph.
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 not intended to limit the protection scope of the present invention.
As shown in Figure 1, a kind of field regulator is low to encourage limitation optimization setting method, comprising steps of
Step 1: obtaining under-excitation ability value of the unit under different active operating conditions (i.e. by generator unit leading phase test
The maximum absorbent no work value of generator, under-excitation ability value are the low foundations for encouraging limitation fixed value adjusting).
The step 1, detailed process are as follows: required according to DL-T 1523-2016 " synchronous generator leading phase test directive/guide "
Carry out unit under-excitation ability test, general steam turbine generator 50%, 75% and 100% rated active power carry out respectively into
Phase, hydrogenerator are then carried out respectively in 0%, 50%, 75%, 100% rated power into phase.When into phase, it is idle to reduce unit,
Until the set end voltage of generator, steady state stability limit, generator terminal electric current, temperature, station-service voltage, these limiting factors of system voltage are appointed
One parameter reaches limit value, using at this time without work value as lower unit under-excitation ability value active at this time, by a variety of active operating condition (vapour
Three kinds of turbine, four kinds of the hydraulic turbine) carry out leading phase test, it can get unit under-excitation ability value under different active operating conditions, encouraged as low
The foundation of fixed value adjusting is limited, Fig. 2 is that certain unit carries out the unit under-excitation ability value response curve obtained after leading phase test；Table 1
Carry out the unit under-excitation ability value table obtained after leading phase test for certain unit in Fig. 2；
Certain unit of table 1 carries out the unit under-excitation ability value obtained after leading phase test, action value table
| Active/MW | 300 | 450 | 600 |
| Under-excitation ability value/Mvar | -200 | -150 | -70 |
| It is low to encourage limitation calculating action value/Mvar | -175 | -131 | -61 |
| It is low to encourage limitation actual act value/Mvar | -172 | — | — |
Step 2: obtaining the low calculation formula for encouraging limitation acting characteristic, and count according to the producer of field regulator, model
Calculate it is low encourage limitation action value, it is idle to reduce unit, encourages limitation movement until low, obtain it is low encourages limitation actual act value, if meter
The low limitation action value and the low deviation for encouraging limitation actual act value of encouraging calculated is more than the range set, then adjusts calculation formula again
Calculate it is low encourage limitation action value, tested again until deviation is in the range of setting, obtain final calculation formula；According to final
Calculation formula approach using the low limitation action value of encouraging calculated or be that setting principle is adjusted and low encourages limit equal to unit under-excitation ability value
Formulation value；
The step 2, adjusting is low to encourage limitation definite value, comprising the following steps:
(1) according to the producer of field regulator, model, the low calculation formula for encouraging limitation acting characteristic is obtained；
Different manufacturers, different model field regulator acting characteristic calculation formula be different, such as: many producers encourage
It is that set end voltage square limits the multiplication relationship of definite value with low encourage that magnestat is low, which to encourage limitation action value, is shown below:
Qi=(U/UN)2·Qi' (1)
In formula, QiLimitation action value is encouraged to be low；Qi' encourage limitation setting valve to be low；U is practical set end voltage；UNFor specified machine
Hold voltage；
Some producer's field regulators are low encourage limitation movement after, idle have a upper lift process, idle after movement, become:
Qi"=(U/UN)2·Qi'+△Q (2)
In formula, Qi" limitation action value is encouraged to be low；Qi' encourage limitation setting valve to be low；U is practical set end voltage；UNIt is specified
Set end voltage；△ Q is upper lift without work value；
In addition some external producers, it is low encourage limitation action value and be then one encourage that limit definite value etc. a variety of with active and reactive, low
The relevant variable of factor is obtained by a more complicated calculation formula, needs to determine specific calculation with producer.
The present embodiment, unit it is active be 300MW, under-excitation ability value be -200Mvar, set end voltage is tested to be at this time
The 93.6% of rated value, by the low formula (1) for encouraging acting characteristic of field regulator, calculating active is 300MW, low to encourage limitation
Low limitation action value of encouraging is -175Mvar to definite value when being set as under-excitation ability value -200Mvar, as shown in table 2.
(2) when it is 300MW that unit is active, by it is low encourage limitation fixed value adjusting 300MW be active in test under into phase energy
10Mvar or so on force value -200Mvar, such as: -190Mvar, it is 300MW that it is active, which to calculate unit, by formula (1), low to encourage limit
Low when setting valve processed is -190Mvar encourages limitation action value, and slowly reduces that test unit is idle to calculated low to encourage limitation
Near action value, verifies low encourage and limit whether correctly movement, when reduction test unit is idle, test unit must not exceed without work value
Under-excitation ability value (- 200Mvar) when leading phase test；If not operating before -200Mvar without work value, low encourage can be raised and limit adjusting
It is idle to reduce unit again for value, such as -180Mvar, until low encourage limitation movement.It is low at this time to encourage remembering when limitation acts without work value
For it is low encourage limitation actual act value, if it is low encourage limitation actual act value and it is calculated it is low encourage limit action value deviation it is larger,
The low limitation acting characteristic formula of encouraging of field regulator can be provided for producer and is overlapped fixed idle deviant adjustment, until meter
The low limitation action value and practical low limitation action value error of encouraging of encouraging calculated is within 5% range.In the present embodiment, unit work
In 300MW, adjusting definite value is under-excitation ability value -200Mvar, and the low limitation action value of encouraging of calculating is -175Mvar, is slowly dropped
Low test unit is without work value until low encourage limitation movement, and practical low limitation action value of encouraging is -172Mvar, and calculating error is
1.6%, within 5% range, it can show that the acting characteristic calculation formula is correct.By low limitation fixed value adjusting of encouraging in under-excitation ability
Value is and current low to encourage limitation setting method to verify formula correctness.
(3) the low action value for encouraging limitation that field regulator calculates is consistent with unit under-excitation ability value or as far as possible force
Closely, it calculates and low encourages limitation definite value；
Acting characteristic calculation formula is limited according to authenticated low encourage, it is active at tri- kinds of 300MW, 450MW, 600MW respectively
Under, approached in a manner of unit correspond to active lower under-excitation ability value by calculated low limitation action value of encouraging, adjust three kinds it is active under
Low encourage limitation definite value.Such as: acting characteristic is formula (1) after verifying, and the low of calculating is enabled to encourage hair when limitation action value is equal to test
Motor under-excitation ability value encourages limitation definite value using formula (1) calculating is low, as shown in figure 3, table 2 is under three kinds of the present invention is active
It is low to encourage limitation setting valve and calculating action value；
Table 2 is that low encourage under three kinds active limits setting valve and calculating action value
When active 300MW, according to it is idle be under-excitation ability value -200Mvar when set end voltage, to encourage limitation dynamic for calculating low
Work value is -200Mvar, can show that the low limitation setting valve of encouraging of adjusting is -228Mvar, same sample prescription according to the formula (1) after verifying
Setting valve is -171Mvar when method can obtain 450MW, and setting valve is -80Mvar when 600MW.
Step 3: adjusting is low encourage limitation definite value after, again by verification experimental verification, finely tuning adjusted low, to encourage limitation definite value straight
To the practical low error for limiting action value and under-excitation ability value of encouraging within allowed band.The low limitation definite value of encouraging of adjusting passes through examination
Verifying, reach actual act value approach under-excitation ability value and without departing from under-excitation ability value.
The step 3, adjust it is low encourage limitation definite value after, it is idle slowly to reduce unit under the definite value, encourages limitation until low
Movement, reduce it is idle during, it is minimum idle to exceed unit under-excitation ability；As in the process, low to encourage limitation not operating,
Or more movement in advance, can finely tune again it is low encourage limitation definite value, until low encourage limitation actual act value and unit under-excitation ability value
It is close.
In the present embodiment, at 50% specified active (300MW), calculating low limitation action value of encouraging is -200Mvar, real
The low limitation action value of encouraging in border is -197Mvar, and calculating error 1.5%, within 5% range, definite value setting is reasonable.If
Idle to be down to -200Mvar, low to encourage limitation still not operating, can setting valve simultaneous bias 5Mvar is set as -223Mvar, be dropped again
It is idle, it is seen that whether to act when -200Mvar, gradually deviate, until operating position.If idle encourage limitation -180Mvar is low
Just act, can offset downward it is low encourage limitation definite value, low limitation definite value of encouraging is set as -233Mvar, until action value and into phase energy
The deviation of force value is within 5%.Finally the definite value of 450MW, 600MW are deviated by same offset.
A kind of field regulator is low to encourage limitation optimization adjusting system characterized by comprising
It adjusts low encourage and limits definite value module, the reduction of generator unit is idle to encourage limitation until field regulator is low for comparing
The field regulator obtained when movement is low encourage limitation actual act value and calculating the low deviation for encouraging limitation action value whether be more than
The range of setting adjusts low encourage and limits action value calculation formula, the deviation is until the model in setting again if being more than
It in enclosing, obtains final low encourage and limits action value calculation formula, according to final low limitation action value calculation formula of encouraging to calculate
It is low encourage limitation action value and be equal to or approach the adjusting of unit under-excitation ability value low encourage limitation definite value；To encourage limitation dynamic for the calculating low
Work value is calculated according to the low calculation formula for encouraging limitation acting characteristic；
It finely tunes low encourage adjusted and limits definite value module, it is low for having been adjusted by the fine tuning of generator unit leading phase test
Encourage limitation definite value, until the practical low error for encouraging limitation action value and under-excitation ability value within the allowable range.
The adjusting is low to encourage limitation definite value detailed process are as follows:
(1) according to the producer of field regulator, model, the low calculation formula for encouraging limitation acting characteristic is obtained；
(2) by low limitation fixed value adjusting of encouraging in under-excitation ability value, by calculation formula calculate it is low encourage limitation action value, pass through
Idle to calculated low encourage of test unit is slowly reduced to limit near action value, verifying is low to encourage whether limitation correctly acts, if
It is not operating before under-excitation ability value without work value, raise it is low encourage limitation setting valve, it is idle to reduce unit again, until low, to encourage limitation dynamic
Make, if the low limitation actual act value and calculated low limitation action value deviation of encouraging of encouraging is more than setting range, to adjustment of field excitation
Low encourages of device limits the fixed idle deviant adjustment of acting characteristic formula superposition, until calculated low encourage limits action value and reality
It is low encourage limitation action value error in the range of setting until, obtain final calculation formula；
(3) the low action value for encouraging limitation of calculating is set as or is approached as far as possible unit under-excitation ability value, according to final
Calculation formula calculate and low encourage limitation definite value.
It is described finely tune adjusted low encourage limitation definite value, detailed process are as follows: adjusting is low encourage limitation definite value after, under the definite value
It is idle by slowly reducing unit, until it is low encourage limitation movement, if in the process, it is low encourage limitation it is not operating or more in advance
Movement, finely tune again it is low encourage limitation definite value, encourage limitation actual act value and unit under-excitation ability value is close until low.
The reduction unit is idle, minimum idle to exceed unit under-excitation ability during reducing idle.
In conclusion a kind of field regulator of the invention is low to encourage limitation optimization setting method and system, low encourage is optimized
Definite value is limited, not only rationally with field loss protection cooperation, and gives full play to unit under-excitation ability, unit can be guaranteed into phase energy
The purpose of safe leading phase operation within power.The present invention can give full play to the due under-excitation ability of generating set, improve power grid fortune
Row level of security, has a good application prospect.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The above is only a 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 deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of field regulator is low to encourage limitation optimization setting method, it is characterised in that: comprising steps of
Step 1: compare generator unit reduce it is idle until field regulator is low encourage limitation movement when obtained field regulator
It is low encourage limitation actual act value and calculating it is low encourage limitation action value deviation whether be more than the range of setting, if being more than to adjust
It is whole it is low encourage limitation action value calculation formula, the deviation final low encourages limit until obtaining in the range of setting again
Action value calculation formula processed, according to it is final it is low encourage limitation action value calculation formula with calculate it is low encourage limitation action value be equal to or
It approaches the adjusting of unit under-excitation ability value and low encourages limitation definite value；The low of the calculating encourages limitation action value to encourage limitation movement special according to low
The calculation formula of property is calculated；
Step 2: adjusting is low encourage limitation definite value after, low encourage limitation again by what the fine tuning of generator unit leading phase test had been adjusted
Definite value, until the practical low error for encouraging limitation action value and under-excitation ability value within the allowable range.
2. a kind of field regulator according to claim 1 is low to encourage limitation optimization setting method, it is characterized in that: described into phase
Ability value are as follows: when into phase unit it is idle decrease up to any parameter of generator limiting factor reach limit value without work value.
3. a kind of field regulator according to claim 2 is low to encourage limitation optimization setting method, it is characterized in that: the power generation
Machine limiting factor includes set end voltage, steady state stability limit, generator terminal electric current, temperature, the station-service voltage, system voltage of generator.
4. a kind of field regulator according to claim 1 is low to encourage limitation optimization setting method, it is characterized in that: the step
One detailed process are as follows:
(1) according to the producer of field regulator, model, the low calculation formula for encouraging limitation acting characteristic is obtained；
(2) by low limitation fixed value adjusting of encouraging in under-excitation ability value, by calculation formula calculate it is low encourage limitation action value, by slow
It reduces idle to calculated low encourage of test unit to limit near action value, verifies low encourages and limit whether correctly movement, if idle
Be worth it is not operating before under-excitation ability value, raise it is low encourage limitation setting valve, again reduce unit it is idle, until it is low encourage limitation movement,
If the low limitation actual act value and calculated low limitation action value deviation of encouraging of encouraging is more than setting range, low to field regulator
The fixed idle deviant adjustment of limitation acting characteristic formula superposition is encouraged, low encourages that limitation action value is low with reality to encourage until calculated
Until action value error is limited in the range of setting, final calculation formula is obtained；
(3) the low action value for encouraging limitation of calculating is set as or is approached as far as possible unit under-excitation ability value, according to final meter
It calculates formula and calculates and low encourage limitation definite value.
5. a kind of field regulator according to claim 1 is low to encourage limitation optimization setting method, it is characterized in that: the step
Two detailed processes are as follows: adjusting is low encourage limitation definite value after, it is idle slowly to reduce unit under the definite value, until low encourage limitation movement,
If in the process, low not operating, or more movement in advance of encouraging limitation, finely tune again it is low encourage limitation definite value, encourage limitation until low
Actual act value and unit under-excitation ability value are close.
6. a kind of field regulator according to claim 5 is low to encourage limitation optimization setting method, it is characterized in that: the reduction
Unit is idle during reducing idle, minimum idle to exceed unit under-excitation ability.
7. a kind of field regulator is low to encourage limitation optimization adjusting system characterized by comprising
It adjusts low encourage and limits definite value module, the reduction of generator unit is idle to encourage limitation movement until field regulator is low for comparing
When obtained field regulator is low encourages whether limitation actual act value and the low deviation for encouraging limitation action value of calculating are more than setting
Range, if being more than, adjust it is low encourage limitation action value calculation formula, the deviation is until the range in setting again
It is interior, obtain it is final it is low encourage limitation action value calculation formula, low encourage limitation action value calculation formula according to final to calculate
It is low encourage limitation action value and be equal to or approach the adjusting of unit under-excitation ability value low encourage limitation definite value；The low of the calculating encourages limitation movement
Value is calculated according to the low calculation formula for encouraging limitation acting characteristic；
It finely tunes adjusted low and encourages limitation definite value module, low encourage limit for what is adjusted by the fine tuning of generator unit leading phase test
Formulation value, until the practical low error for encouraging limitation action value and under-excitation ability value within the allowable range.
8. a kind of field regulator according to claim 7 is low to encourage limitation optimization adjusting system, which is characterized in that described whole
Fixed low encourage limits definite value detailed process are as follows:
(1) according to the producer of field regulator, model, the low calculation formula for encouraging limitation acting characteristic is obtained；
(2) by low limitation fixed value adjusting of encouraging in under-excitation ability value, by calculation formula calculate it is low encourage limitation action value, by slow
It reduces idle to calculated low encourage of test unit to limit near action value, verifies low encourages and limit whether correctly movement, if idle
Be worth it is not operating before under-excitation ability value, raise it is low encourage limitation setting valve, again reduce unit it is idle, until it is low encourage limitation movement,
If the low limitation actual act value and calculated low limitation action value deviation of encouraging of encouraging is more than setting range, low to field regulator
The fixed idle deviant adjustment of limitation acting characteristic formula superposition is encouraged, low encourages that limitation action value is low with reality to encourage until calculated
Until action value error is limited in the range of setting, final calculation formula is obtained；
(3) the low action value for encouraging limitation of calculating is set as or is approached as far as possible unit under-excitation ability value, according to final meter
It calculates formula and calculates and low encourage limitation definite value.
9. a kind of field regulator according to claim 7 is low to encourage limitation optimization adjusting system, which is characterized in that described micro-
Adjust that has adjusted low to encourage limitation definite value, detailed process are as follows: adjusting is low encourage limitation definite value after, by slowly reducing machine under the definite value
Group is idle, until low encourage limitation movement, if in the process, it is low to encourage that limitation is not operating, or more movement in advance is finely tuned low again
Limitation definite value is encouraged, until low limitation actual act value of encouraging is approached with unit under-excitation ability value.
10. a kind of field regulator according to claim 9 is low to encourage limitation optimization adjusting system, which is characterized in that described
It is idle to reduce unit, it is minimum idle to exceed unit under-excitation ability during reducing idle.
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| CN110879620A (en) * | 2019-11-19 | 2020-03-13 | 中广核工程有限公司 | Liquid level control method and system for vertical steam generator of nuclear power station |
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| CN110311602B (en) | 2020-11-24 |
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