CN108321794A - A kind of generating set governing system relates to network parameters on-line identification method and apparatus - Google Patents
A kind of generating set governing system relates to network parameters on-line identification method and apparatus Download PDFInfo
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- CN108321794A CN108321794A CN201810051398.XA CN201810051398A CN108321794A CN 108321794 A CN108321794 A CN 108321794A CN 201810051398 A CN201810051398 A CN 201810051398A CN 108321794 A CN108321794 A CN 108321794A
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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
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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
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
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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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Abstract
The present invention provides a kind of generating set governing systems to relate to network parameters on-line identification method and apparatus, it first obtains primary frequency modulation action event and determines the initial power of generating set, then the related coefficient and absolute error of the actual power curve and theoretical power curve of generating set are calculated, on-line identification finally is carried out to the network parameters that relate to of generating set governing system, it can really reflect generating set primary frequency regulation performance, it is ensured that generating set can have enough Primary frequency control abilities under the continually changing workload demand of power grid.The present invention is picked out by the related coefficient of the actual power curve and theoretical power curve that calculate generating set and relates to network parameters including difference coefficient and primary frequency modulation delay time, more objective, truer, closer actual operating mode, the examination that network parameters are related to for generating set governing system provides technological means, net source coordination performance is improved, and the safe and stable operation for improving power grid is horizontal.
Description
Technical field
The present invention relates to technical field of power systems, and in particular to a kind of generating set governing system relates to network parameters and distinguishes online
Know method and apparatus.
Background technology
Frequency is one of most important parameter of Operation of Electric Systems, and frequency changes has weight to the safe and stable operation of system
The influence wanted.When system disturbs, it is nearby power system security stable operation that mains frequency, which is maintained rated value,
One of main target.Primary frequency modulation refers to being changed with frequency by the intrinsic ability of the frequency characteristic of generating set governing system
And adjusted automatically into line frequency, it is first of barrier for safeguarding grid power balance and safety and stability, the safe operation to power grid
It is significant.
According to《Guiding rules of power system safety and stability》In regulation, setting of the set speed adjustment system in relation to important parameter and return
Road switching directly influences system frequency stabilization and power grid security, should be included in scheduling audit parameter system.Currently, generator
The governing system of group relates to what network parameters were generally obtained by offline mode, on the one hand, due to operating condition difference, in off-line testing
In some parameters can not really obtain, cause the generating set governing system of actual motion to relate to network parameters and obtained with off-line testing
To data be not consistent；On the other hand, there are parameter drifts when being run due to generating set, cause offline mode really anti-
Reflect running generating set primary frequency regulation performance.
Invention content
In order to overcome the shortcomings of that above-mentioned offline mode in the prior art cannot really reflect generating set primary frequency regulation performance,
A kind of generating set governing system of present invention offer relates to network parameters on-line identification method and apparatus, first obtains primary frequency modulation and acts thing
Part, and determine according to primary frequency modulation action event the initial power of generating set, then according to the initial power meter of generating set
Calculate generating set theoretical power (horse-power), and calculate generating set actual power curve and theoretical power curve related coefficient and absolutely
To error, finally according to the related coefficient and absolute error of the actual power curve of generating set and theoretical power curve to power generation
The network parameters that relate to of set speed adjustment system carry out on-line identification, can really reflect generating set primary frequency regulation performance, it is ensured that power generation
Unit can have enough Primary frequency control abilities under the continually changing workload demand of power grid.
In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme that：
On the one hand, a kind of generating set governing system of present invention offer relates to network parameters on-line identification method, including：
Primary frequency modulation action event is obtained, and determines the initial power of generating set according to primary frequency modulation action event；
The theoretical power (horse-power) of generating set is calculated according to the initial power of generating set, and calculates the actual power of generating set
The related coefficient and absolute error of curve and theoretical power curve；
According to the related coefficient and absolute error of the actual power curve of generating set and theoretical power curve to generator
The network parameters that relate to of group governing system carry out on-line identification.
The acquisition primary frequency modulation action event includes：
Determine primary frequency modulation action time started and primary frequency modulation action end time；
The primary frequency modulation action time started includes：Generating set frequency departure absolute value is more than primary frequency modulation dead zone
Time；
The primary frequency modulation action end time includes：Generating set frequency returns to primary frequency modulation dead zone or primary frequency modulation is held
The continuous time is more than the time of preset time.
It is described to determine that the initial power of generating set includes according to primary frequency modulation action event：
The actual power average value of generating set is as the initial power of generating set before primary frequency modulation action is started.
According to the initial power of generating set, the theoretical power (horse-power) of generating set is calculated as follows：
PS(t)=P0+ΔP(t)
Wherein, PS(t) theoretical power (horse-power) of t moment generating set, P are indicated0Indicate the initial power of generating set, Δ P (t)
Indicate the power variation of t moment generating set, andPNIndicate the rated power of generating set, fN
Indicate the rated power of generating set, X1Indicate that difference coefficient, Δ f (t) indicate the frequency departure of t moment generating set, and Δ f
(t)=f (t)-fN, the actual frequency of f (t) expression t moment generating sets.
Before the related coefficient and absolute error of the actual power curve for calculating generating set and theoretical power curve,
Including：
If primary frequency modulation delay time is X2, the theoretical power (horse-power) of Wind turbines is delayed countershaft to X2 point of right translation, is obtained
The theoretical power curve of Wind turbines after to translation.
The actual power curve of generating set and the related coefficient of theoretical power curve is calculated as follows：
Wherein, R (PS, P) indicate generating set actual power curve and translation after theoretical power curve phase relation
Number, PSIndicate that the theoretical power (horse-power) of generating set, P indicate the actual power of generating set, Cov (PS, P) and indicate PSWith the association side of P
Difference,Indicate PSVariance,Indicate the variance of P.
The actual power curve of generating set and the absolute error of theoretical power curve is calculated as follows：
Wherein, Error indicates the absolute error of the actual power curve and the theoretical power curve after translation of generating set,
P (t) indicates that the actual power of t moment generating set, n indicate sampling number.
It is described according to the actual power curve of generating set and the related coefficient of theoretical power curve and absolute error to hair
Motor group governing system relate to network parameters carry out on-line identification include：
Different values is assigned to X1 and X2, the actual power curve and the theoretical power (horse-power) after translation for obtaining different generating sets
The related coefficient and absolute error of curve take related coefficient closest to 1 and the Wind turbines theoretical power (horse-power) of absolute error minimum
Corresponding X1 and X2 relates to network parameters for generating set governing system.
On the other hand, the present invention also provides a kind of generating set governing systems to relate to network parameters on-line identification device, including：
Determining module determines generating set for obtaining primary frequency modulation action event, and according to primary frequency modulation action event
Initial power；
Computing module, the theoretical power (horse-power) for calculating generating set according to the initial power of generating set, and calculate power generation
The actual power curve of unit and the related coefficient and absolute error of theoretical power curve；
Module is recognized, for according to the actual power curve of generating set and the related coefficient of theoretical power curve and absolutely
Error carries out on-line identification to the network parameters that relate to of generating set governing system.
The determining module includes acquisition module, and the acquisition module, which is used to obtain primary frequency modulation by following processes, acts thing
Part：
Determine primary frequency modulation action time started and primary frequency modulation action end time；
The primary frequency modulation action time started includes：Generating set frequency departure absolute value is more than primary frequency modulation dead zone
Time；
The primary frequency modulation action end time includes：Generating set frequency returns to primary frequency modulation dead zone or primary frequency modulation is held
The continuous time is more than the time of preset time.
The determining module includes determination unit, and the determination unit is used for according to primary frequency modulation action event, and is pressed
The process of stating determines the initial power of generating set：
The actual power average value of generating set is as the initial power of generating set before primary frequency modulation action is started.、
The computing module includes theoretical power (horse-power) computing unit, and the theoretical power (horse-power) computing unit is according to the first of generating set
The theoretical power (horse-power) of generating set is calculated as follows in beginning power：
PS(t)=P0+ΔP(t)
Wherein, PS(t) theoretical power (horse-power) of t moment generating set, P are indicated0Indicate the initial power of generating set, Δ P (t)
Indicate the power variation of t moment generating set, andPNIndicate the rated power of generating set, fN
Indicate the rated power of generating set, X1Indicate that difference coefficient, Δ f (t) indicate the frequency departure of t moment generating set, and Δ f
(t)=f (t)-fN, the actual frequency of f (t) expression t moment generating sets.
Described device further includes translation module, and the translation module is specifically used for：
If primary frequency modulation delay time is X2, the theoretical power (horse-power) of Wind turbines is delayed countershaft to X2 point of right translation, is obtained
The theoretical power curve of Wind turbines after to translation.
The computing module further includes related coefficient computing unit, and power generation is calculated as follows in the related coefficient computing unit
The actual power curve of unit and the related coefficient of theoretical power curve：
Wherein, R (PS, P) indicate generating set actual power curve and translation after theoretical power curve phase relation
Number, PSIndicate that the theoretical power (horse-power) of generating set, P indicate the actual power of generating set, Cov (PS, P) and indicate PSWith the association side of P
Difference,Indicate PSVariance,Indicate the variance of P.
The computing module further includes absolute error computing unit, and power generation is calculated as follows in the absolute error computing unit
The actual power curve of unit and the absolute error of theoretical power curve：
Wherein, Error indicates the absolute error of the actual power curve and the theoretical power curve after translation of generating set,
P (t) indicates that the actual power of t moment generating set, n indicate sampling number.
The identification module is specifically used for：
Different values is assigned to X1 and X2, the actual power curve and the theoretical power (horse-power) after translation for obtaining different generating sets
The related coefficient and absolute error of curve take related coefficient closest to 1 and the Wind turbines theoretical power (horse-power) of absolute error minimum
Corresponding X1 and X2 relates to network parameters for generating set governing system.
Compared with the immediate prior art, technical solution provided by the invention has the advantages that：
Generating set governing system provided by the invention relates in network parameters on-line identification method, first obtains primary frequency modulation action
Event, and determine according to primary frequency modulation action event the initial power of generating set, then according to the initial power of generating set
Calculate generating set theoretical power (horse-power), and calculate generating set actual power curve and theoretical power curve related coefficient and
Absolute error, finally according to the related coefficient and absolute error of the actual power curve of generating set and theoretical power curve to hair
The network parameters that relate to of motor group governing system carry out on-line identification, can really reflect generating set primary frequency regulation performance, it is ensured that hair
Motor group can have enough Primary frequency control abilities under the continually changing workload demand of power grid；
It includes determining module, computing module that generating set governing system provided by the invention, which relates to network parameters on-line identification device,
With identification module, determining module obtains primary frequency modulation action event, and determines generating set according to primary frequency modulation action event
Initial power, computing module calculate the theoretical power (horse-power) of generating set according to the initial power of generating set, and calculate generating set
Actual power curve and theoretical power curve related coefficient and absolute error, identification module is according to the practical work(of generating set
The related coefficient and absolute error of rate curve and theoretical power curve carry out online the network parameters that relate to of generating set governing system
Identification, can really reflect generating set primary frequency regulation performance, it is ensured that generating set is under the continually changing workload demand of power grid
There can be enough Primary frequency control abilities；
Generating set governing system provided by the invention relates to reality of the network parameters on-line identification method by calculating generating set
The related coefficient of border power curve and theoretical power curve is picked out relates to net including difference coefficient and primary frequency modulation delay time
Parameter, more objective, truer, closer actual operating mode；
It is that generating set governing system relates to that generating set governing system provided by the invention, which relates to network parameters on-line identification method,
The examination of network parameters provides technological means, improves net source coordination performance, and the safe and stable operation for improving power grid is horizontal.
Description of the drawings
Fig. 1 is that generating set governing system relates to network parameters on-line identification method flow diagram in the embodiment of the present invention.
Specific implementation mode
Invention is further described in detail below in conjunction with the accompanying drawings.
An embodiment of the present invention provides a kind of generating set governing systems to relate to network parameters on-line identification method, the tool of this method
Body flow chart is as shown in Figure 1, by taking D5000 systems as an example, including generator frequency and active power, sample frequency 10Hz/s, always
Duration 2min, discontinuity surface when including altogether 1200.It is online that generating set governing system provided in an embodiment of the present invention relates to network parameters
Discrimination method detailed process is as follows：
S101：Primary frequency modulation action event is obtained, and determines the initial power of generating set according to primary frequency modulation action event
Rate；
S102：The theoretical power (horse-power) of generating set is calculated according to the initial power of generating set, and calculates the reality of generating set
The related coefficient and absolute error of border power curve and theoretical power curve；
S103：According to the related coefficient and absolute error of the actual power curve of generating set and theoretical power curve to hair
The network parameters that relate to of motor group governing system carry out on-line identification.
In S101, obtains primary frequency modulation action event and be specifically to determine that primary frequency modulation action time started and primary frequency modulation are dynamic
Make the end time；The primary frequency modulation action time started can be obtained at the 230th point, primary frequency modulation acts the end time at the 830th point.
The above-mentioned primary frequency modulation action time started is that generating set frequency departure absolute value (can more than primary frequency modulation dead zone
Take 0.033Hz) time,
The above-mentioned primary frequency modulation action end time is that generating set frequency returns to primary frequency modulation dead zone or primary frequency modulation is held
The continuous time is more than the time of preset time (desirable 60s).
In above-mentioned S101, determine that the initial power of generating set is specifically by primary frequency modulation according to primary frequency modulation action event
Initial power of the actual power average value of generating set as generating set before action starts.
In above-mentioned S102, according to the initial power of generating set, the theoretical power (horse-power) of generating set is calculated as follows：
PS(t)=P0+ΔP(t)
Wherein, PS(t) theoretical power (horse-power) of t moment generating set is indicated；P0Indicate the initial power of generating set, P0=
593.995；Δ P (t) indicates the power variation of t moment generating set, andPNIndicate generating set
Rated power, fNIndicate the rated power of generating set, X1Indicate that difference coefficient, Δ f (t) indicate the frequency of t moment generating set
Rate deviation, and Δ f (t)=f (t)-fN, the actual frequency of f (t) expression t moment generating sets.
The actual power curve of the calculating generating set of above-mentioned S102 and the related coefficient of theoretical power curve are missed with absolute
Before difference, including：
If primary frequency modulation delay time is X2, the theoretical power (horse-power) of Wind turbines is delayed countershaft to X2 point of right translation, is obtained
The theoretical power curve of Wind turbines after to translation.
In above-mentioned S102, the actual power curve of generating set and the related coefficient of theoretical power curve is calculated as follows：
Wherein, R (PS, P) indicate generating set actual power curve and translation after theoretical power curve phase relation
Number, PSIndicate that the theoretical power (horse-power) of generating set, P indicate the actual power of generating set, Cov (PS, P) and indicate PSWith the association side of P
Difference,Indicate PSVariance,Indicate the variance of P.
In above-mentioned S102, the actual power curve of generating set and the absolute error of theoretical power curve is calculated as follows：
Wherein, Error indicates the absolute error of the actual power curve and the theoretical power curve after translation of generating set,
P (t) indicates that the actual power of t moment generating set, n indicate sampling number.
In above-mentioned S103, according to the related coefficient of the actual power curve of generating set and theoretical power curve and absolutely accidentally
Difference carries out on-line identification to the network parameters that relate to of generating set governing system, and detailed process is as follows：
X1 value ranges are 0.001-0.2, step-length 0.001；The value range of X2 is 0-200, step-length 1.It is assigned to X1 and X2
Different values, obtain different generating sets actual power curve and translation after theoretical power curve related coefficient and absolutely
To error, the Wind turbines theoretical power (horse-power) corresponding X1 and X2 for taking related coefficient closest to 1 and absolute error minimum is power generation
Set speed adjustment system relates to network parameters, X1=0.042, X2=4.Therefore, it is 4.2% that can pick out this TV station unit difference coefficient,
Primary frequency modulation delay time is 0.4s.
Conceived based on same one side, the embodiment of the present invention also provides a kind of generating set governing system and relates to network parameters to be distinguished online
Identification device, including determining module, computing module and identification module, introduce the function of this 3 modules separately below：
Determining module therein for obtaining primary frequency modulation action event, and is determined according to primary frequency modulation action event and is sent out
The initial power of motor group；
Computing module therein, the theoretical power (horse-power) for calculating generating set according to the initial power of generating set, and count
Calculate the related coefficient and absolute error of the actual power curve and theoretical power curve of generating set；
Identification module therein, for according to the actual power curve of generating set and the related coefficient of theoretical power curve
On-line identification is carried out to the network parameters that relate to of generating set governing system with absolute error.
Above-mentioned determining module includes acquisition module, and acquisition module, which is used to obtain primary frequency modulation by following processes, acts thing
Part is specifically to determine primary frequency modulation action time started and primary frequency modulation action end time；
The primary frequency modulation action time started therein is that generating set frequency departure absolute value is more than primary frequency modulation dead zone
Time；
The primary frequency modulation action end time therein is that generating set frequency returns to primary frequency modulation dead zone or primary frequency modulation is held
The continuous time is more than the time of preset time.
Above-mentioned determining module further includes determination unit, and determination unit is used for according to primary frequency modulation action event, and is pressed
The process of stating determines the initial power of generating set：
The actual power average value of generating set is as the initial power of generating set before primary frequency modulation action is started.、
Above-mentioned computing module includes theoretical power (horse-power) computing unit, and theoretical power (horse-power) computing unit is according to the initial of generating set
The theoretical power (horse-power) of generating set is calculated as follows in power：
PS(t)=P0+ΔP(t)
Wherein, PS(t) theoretical power (horse-power) of t moment generating set, P are indicated0Indicate the initial power of generating set, Δ P (t)
Indicate the power variation of t moment generating set, andPNIndicate the rated power of generating set, fN
Indicate the rated power of generating set, X1Indicate that difference coefficient, Δ f (t) indicate the frequency departure of t moment generating set, and Δ f
(t)=f (t)-fN, the actual frequency of f (t) expression t moment generating sets.
It further includes translation module that generating set governing system provided in an embodiment of the present invention, which relates to network parameters on-line identification device,
Translation module is specifically used for：
If primary frequency modulation delay time is X2, the theoretical power (horse-power) of Wind turbines is delayed countershaft to X2 point of right translation, is obtained
The theoretical power curve of Wind turbines after to translation.
Above-mentioned computing module further includes related coefficient computing unit, and generator is calculated as follows in related coefficient computing unit
The related coefficient of the actual power curve and theoretical power curve of group：
Wherein, R (PS, P) indicate generating set actual power curve and translation after theoretical power curve phase relation
Number, PSIndicate that the theoretical power (horse-power) of generating set, P indicate the actual power of generating set, Cov (PS, P) and indicate PSWith the association side of P
Difference,Indicate PSVariance,Indicate the variance of P.
Above-mentioned computing module further includes absolute error computing unit, and generator is calculated as follows in absolute error computing unit
The absolute error of the actual power curve and theoretical power curve of group：
Wherein, Error indicates the absolute error of the actual power curve and the theoretical power curve after translation of generating set,
P (t) indicates that the actual power of t moment generating set, n indicate sampling number.
Above-mentioned identification module is according to the actual power curve of generating set and the related coefficient of theoretical power curve and absolutely
On-line identification is carried out to the network parameters that relate to of generating set governing system to error, detailed process is as follows：
Different values is assigned to X1 and X2, the actual power curve and the theoretical power (horse-power) after translation for obtaining different generating sets
The related coefficient and absolute error of curve take related coefficient closest to 1 and the Wind turbines theoretical power (horse-power) of absolute error minimum
Corresponding X1 and X2 relates to network parameters for generating set governing system.
For convenience of description, each section of apparatus described above is divided into various modules with function or unit describes respectively.
Certainly, each module or the function of unit can be realized in same or multiple softwares or hardware when implementing the application.
It should be understood by those skilled in the art that, embodiments herein can be provided 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, the application can be used in one or more wherein include computer usable program code computer
The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is with reference to method, the flow 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 can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of 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 count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field with reference to above-described embodiment still can to the present invention specific implementation mode modify or
Equivalent replacement, these are applying for this pending hair without departing from any modification of spirit and scope of the invention or equivalent replacement
Within bright claims.
Claims (16)
1. a kind of generating set governing system relates to network parameters on-line identification method, which is characterized in that including：
Primary frequency modulation action event is obtained, and determines the initial power of generating set according to primary frequency modulation action event；
The theoretical power (horse-power) of generating set is calculated according to the initial power of generating set, and calculates the actual power curve of generating set
With the related coefficient and absolute error of theoretical power curve；
According to the related coefficient and absolute error of the actual power curve of generating set and theoretical power curve to generating set tune
The network parameters that relate to of speed system carry out on-line identification.
2. generating set governing system according to claim 1 relates to network parameters on-line identification method, which is characterized in that described
Obtaining primary frequency modulation action event includes：
Determine primary frequency modulation action time started and primary frequency modulation action end time；
The primary frequency modulation action time started includes：Generating set frequency departure absolute value be more than primary frequency modulation dead zone when
Between；
The primary frequency modulation action end time includes：When generating set frequency returns to primary frequency modulation dead zone or lasting primary frequency modulation
Between be more than preset time time.
3. generating set governing system according to claim 1 relates to network parameters on-line identification method, which is characterized in that described
Determine that the initial power of generating set includes according to primary frequency modulation action event：
The actual power average value of generating set is as the initial power of generating set before primary frequency modulation action is started.
4. generating set governing system according to claim 1 relates to network parameters on-line identification method, which is characterized in that according to
The theoretical power (horse-power) of generating set is calculated as follows in the initial power of generating set：
PS(t)=P0+ΔP(t)
Wherein, PS(t) theoretical power (horse-power) of t moment generating set, P are indicated0Indicate that the initial power of generating set, Δ P (t) indicate t
The power variation of moment generating set, andPNIndicate the rated power of generating set, fNIndicate hair
The rated power of motor group, X1Indicate that difference coefficient, Δ f (t) indicate the frequency departure of t moment generating set, and Δ f (t)=f
(t)-fN, the actual frequency of f (t) expression t moment generating sets.
5. generating set governing system according to claim 4 relates to network parameters on-line identification method, which is characterized in that described
Before calculating the actual power curve of generating set and the related coefficient and absolute error of theoretical power curve, including：
If primary frequency modulation delay time is X2, the theoretical power (horse-power) of Wind turbines is delayed countershaft to X2 point of right translation, is put down
The theoretical power curve of Wind turbines after shifting.
6. generating set governing system according to claim 5 relates to network parameters on-line identification method, which is characterized in that press
Formula calculates the related coefficient of the actual power curve and theoretical power curve of generating set：
Wherein, R (PS, P) indicate generating set actual power curve and translation after theoretical power curve related coefficient, PS
Indicate that the theoretical power (horse-power) of generating set, P indicate the actual power of generating set, Cov (PS, P) and indicate PSWith the covariance of P,Indicate PSVariance,Indicate the variance of P.
7. generating set governing system according to claim 5 relates to network parameters on-line identification method, which is characterized in that press
Formula calculates the absolute error of the actual power curve and theoretical power curve of generating set：
Wherein, Error indicates the absolute error of the actual power curve and the theoretical power curve after translation of generating set, P (t)
Indicate that the actual power of t moment generating set, n indicate sampling number.
8. generating set governing system according to claim 5 relates to network parameters on-line identification method, which is characterized in that described
According to the related coefficient and absolute error of the actual power curve of generating set and theoretical power curve to generating set speed governing system
System relate to network parameters carry out on-line identification include：
Different values is assigned to X1 and X2, the actual power curve and the theoretical power curve after translation for obtaining different generating sets
Related coefficient and absolute error, take related coefficient closest to 1 and absolute error minimum Wind turbines theoretical power (horse-power) correspond to
X1 and X2 be that generating set governing system relates to network parameters.
9. a kind of generating set governing system relates to network parameters on-line identification device, which is characterized in that including：
Determining module determines the first of generating set for obtaining primary frequency modulation action event, and according to primary frequency modulation action event
Beginning power；
Computing module, the theoretical power (horse-power) for calculating generating set according to the initial power of generating set, and calculate generating set
Actual power curve and theoretical power curve related coefficient and absolute error；
Module is recognized, for according to the actual power curve of generating set and the related coefficient and absolute error of theoretical power curve
On-line identification is carried out to the network parameters that relate to of generating set governing system.
10. generating set governing system according to claim 9 relates to network parameters on-line identification device, which is characterized in that institute
It includes acquisition module to state determining module, and the acquisition module is used to obtain primary frequency modulation action event by following processes：
Determine primary frequency modulation action time started and primary frequency modulation action end time；
The primary frequency modulation action time started includes：Generating set frequency departure absolute value be more than primary frequency modulation dead zone when
Between；
The primary frequency modulation action end time includes：When generating set frequency returns to primary frequency modulation dead zone or lasting primary frequency modulation
Between be more than preset time time.
11. generating set governing system according to claim 9 relates to network parameters on-line identification device, which is characterized in that institute
It includes determination unit to state determining module, and the determination unit is used for according to primary frequency modulation action event, and is determined by following processes
The initial power of generating set：
The actual power average value of generating set is as the initial power of generating set before primary frequency modulation action is started.
12. generating set governing system according to claim 9 relates to network parameters on-line identification device, which is characterized in that institute
It includes theoretical power (horse-power) computing unit to state computing module, and the theoretical power (horse-power) computing unit is pressed according to the initial power of generating set
Following formula calculates the theoretical power (horse-power) of generating set：
PS(t)=P0+ΔP(t)
Wherein, PS(t) theoretical power (horse-power) of t moment generating set, P are indicated0Indicate that the initial power of generating set, Δ P (t) indicate t
The power variation of moment generating set, andPNIndicate the rated power of generating set, fNIndicate hair
The rated power of motor group, X1Indicate that difference coefficient, Δ f (t) indicate the frequency departure of t moment generating set, and Δ f (t)=f
(t)-fN, the actual frequency of f (t) expression t moment generating sets.
13. generating set governing system according to claim 12 relates to network parameters on-line identification device, which is characterized in that institute
It further includes translation module to state device, and the translation module is specifically used for：
If primary frequency modulation delay time is X2, the theoretical power (horse-power) of Wind turbines is delayed countershaft to X2 point of right translation, is put down
The theoretical power curve of Wind turbines after shifting.
14. generating set governing system according to claim 13 relates to network parameters on-line identification device, which is characterized in that institute
It further includes related coefficient computing unit to state computing module, and the reality of generating set is calculated as follows in the related coefficient computing unit
The related coefficient of power curve and theoretical power curve：
Wherein, R (PS, P) indicate generating set actual power curve and translation after theoretical power curve related coefficient, PS
Indicate that the theoretical power (horse-power) of generating set, P indicate the actual power of generating set, Cov (PS, P) and indicate PSWith the covariance of P,Indicate PSVariance,Indicate the variance of P.
15. generating set governing system according to claim 13 relates to network parameters on-line identification device, which is characterized in that institute
It further includes absolute error computing unit to state computing module, and the reality of generating set is calculated as follows in the absolute error computing unit
The absolute error of power curve and theoretical power curve：
Wherein, Error indicates the absolute error of the actual power curve and the theoretical power curve after translation of generating set, P (t)
Indicate that the actual power of t moment generating set, n indicate sampling number.
16. generating set governing system according to claim 13 relates to network parameters on-line identification device, which is characterized in that institute
Identification module is stated to be specifically used for：
Different values is assigned to X1 and X2, the actual power curve and the theoretical power curve after translation for obtaining different generating sets
Related coefficient and absolute error, take related coefficient closest to 1 and absolute error minimum Wind turbines theoretical power (horse-power) correspond to
X1 and X2 be that generating set governing system relates to network parameters.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038618A (en) * | 2018-08-10 | 2018-12-18 | 贵州电网有限责任公司 | A kind of method of compressed-air energy-storage system responsive electricity grid frequency modulation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000134994A (en) * | 1998-10-27 | 2000-05-12 | Capstone Turbine Corp | Command and control system method for multiturbo generator |
| CN101299052A (en) * | 2007-11-08 | 2008-11-05 | 国网南京自动化研究院 | Electric generator one time frequency modulation real time quantitative analysis method based on phasor measuring technique |
| CN106786665A (en) * | 2016-12-14 | 2017-05-31 | 国家电网公司华中分部 | A kind of generating set primary frequency regulation property abnormality Online statistics analysis method |
| CN106874615A (en) * | 2017-03-06 | 2017-06-20 | 云南电网有限责任公司电力科学研究院 | Wind turbines adjustment effect of load coefficient testing method and device |
| CN107465371A (en) * | 2017-08-31 | 2017-12-12 | 国网山东省电力公司电力科学研究院 | Generating set primary frequency regulation self-tuing on line controller, control system and method |
-
2018
- 2018-01-19 CN CN201810051398.XA patent/CN108321794B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000134994A (en) * | 1998-10-27 | 2000-05-12 | Capstone Turbine Corp | Command and control system method for multiturbo generator |
| CN101299052A (en) * | 2007-11-08 | 2008-11-05 | 国网南京自动化研究院 | Electric generator one time frequency modulation real time quantitative analysis method based on phasor measuring technique |
| CN106786665A (en) * | 2016-12-14 | 2017-05-31 | 国家电网公司华中分部 | A kind of generating set primary frequency regulation property abnormality Online statistics analysis method |
| CN106874615A (en) * | 2017-03-06 | 2017-06-20 | 云南电网有限责任公司电力科学研究院 | Wind turbines adjustment effect of load coefficient testing method and device |
| CN107465371A (en) * | 2017-08-31 | 2017-12-12 | 国网山东省电力公司电力科学研究院 | Generating set primary frequency regulation self-tuing on line controller, control system and method |
Non-Patent Citations (1)
| Title |
|---|
| 陈屹东等: "发电机组涉网参数的在线评估方法", 《华东电力》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038618A (en) * | 2018-08-10 | 2018-12-18 | 贵州电网有限责任公司 | A kind of method of compressed-air energy-storage system responsive electricity grid frequency modulation |
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