CN115224727A - Method and device for testing stability of dynamic power angle of wind power - Google Patents
Method and device for testing stability of dynamic power angle of wind power Download PDFInfo
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- CN115224727A CN115224727A CN202210832382.9A CN202210832382A CN115224727A CN 115224727 A CN115224727 A CN 115224727A CN 202210832382 A CN202210832382 A CN 202210832382A CN 115224727 A CN115224727 A CN 115224727A
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
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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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- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/40—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation wherein a plurality of decentralised, dispersed or local energy generation technologies are operated simultaneously
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Abstract
The application discloses a method and a device for testing wind power dynamic power angle stability, wherein the method comprises the following steps: and (3) carrying out dynamic power angle stability sensitivity test on each wind power plant by creating a simulation model of wind-fire bundling and alternating current sending out of the system to obtain the dynamic power angle stability sensitivity of each wind power plant to the simulation model, and determining the dynamic power angle stability of each wind power plant to the simulation model, wherein the dynamic power angle stability is inversely related to the dynamic power angle stability sensitivity. Therefore, wind and fire bundling is simulated in simulation software through the alternating current sending-out system, dynamic power angle stability sensitivity testing is respectively carried out on each wind power plant, and the dynamic power angle stability sensitivity of each wind power plant on the simulation model is analyzed, so that the dynamic power angle stability of each wind power plant on the simulation model, which is in a negative correlation with the sensitivity, can be determined, the output certainty of the wind and fire bundling through the alternating current sending-out system is improved, the arrangement of the operation mode of each wind power plant by a power system dispatching mechanism is facilitated, and the switching machine is stably controlled.
Description
Technical Field
The application relates to the field of power generation of wind power plants, in particular to a method and a device for testing dynamic power angle stability of wind power.
Background
In recent years, with the increasing of the power consumption, the development of wind power is greatly developed, and the popularization rate is remarkably increased in recent years. Wind-fire bundling has become an important way of wind power development through the mode of alternating current transmission. The wind-fire bundling and alternating-current sending-out system has the working mode that wind power generated by a multi-wind power field and thermal power generated by the multi-fire power field are collected in a wind-fire bundling collecting station, the wind power and the thermal power are bundled, and the bundled electric energy is sent to a main network through an alternating-current sending-out channel. Wind-fire bundling can be in a reasonable range through an alternating current sending-out system, and the power transmission capacity between areas is improved by increasing the wind-fire bundling proportion.
In the wind and fire bundling and alternating current sending-out system, when an alternating current sending-out channel has a serious fault, the system possibly has the problem of dynamic power angle stability, at present, researches on dynamic stability are mostly concentrated on traditional thermal power and hydropower, but the dynamic power angle stability of the wind power is not researched, the output stability of the wind power field on the wind and fire bundling and alternating current sending-out system cannot be determined, and the wind and fire bundling and alternating current sending-out system has strong uncertainty.
By analyzing the dynamic power angle stability of each wind power plant in the wind and fire bundling AC sending system, the output certainty of the wind and fire bundling AC sending system is improved, the arrangement of the operation mode of each wind power plant by a power system dispatching mechanism is facilitated, and the stable control and the switching-off are carried out.
Disclosure of Invention
In view of the above problems, the present application is provided to provide a method and an apparatus for testing wind power dynamic power angle stability, so as to improve the output certainty of wind fire bundling through an ac sending-out system.
In order to achieve the above object, the following specific solutions are proposed:
a method for testing wind power dynamic power angle stability comprises the following steps:
creating a simulation model of the wind-fire bundling and alternating-current sending system, wherein the simulation model comprises a plurality of wind power plants;
performing dynamic power angle stability sensitivity test on each wind power plant in the simulation model to obtain the dynamic power angle stability sensitivity of each wind power plant on the simulation model;
and determining the dynamic power angle stability of each wind power plant to the simulation model, wherein the dynamic power angle stability of each wind power plant to the simulation model is in a negative correlation with the dynamic power angle stability sensitivity of the wind power plant to the simulation model.
Optionally, the simulation model further includes a plurality of fire fields, wind power collecting stations with the same number as the wind power plants, a wind power bundling collecting station and a main network, each wind power plant transmits wind power energy of the wind power plant to the wind power collecting station corresponding to the wind power plant, each wind power collecting station transmits wind power energy of each wind power plant to the wind power bundling collecting station in a series connection manner, each fire field transmits the fire power energy of the fire power plant to the wind power bundling collecting station, and the wind power bundling collecting station is connected with the main network through an alternating current sending-out channel including an alternating current first line, an alternating current second line and an alternating current third line;
and carrying out dynamic power angle stability sensitivity test on each wind power plant in the simulation model to obtain the dynamic power angle stability sensitivity of each wind power plant to the simulation model, wherein the dynamic power angle stability sensitivity test comprises the following steps:
under the constant output of each thermal power plant, setting the output power of each wind power plant as a preset power, and determining the wind power plant with the preset power as a target wind power plant;
constructing a test condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
under the test condition, acquiring active power of the alternating current B line;
calculating the damping ratio of the alternating current B line when the target wind power plant runs through a prony analysis module in electromechanical transient calculation software based on the active power of the alternating current B line;
and determining the dynamic power angle stability sensitivity of the target wind power plant to the simulation model based on the damping ratio of the alternating current B line when the target wind power plant operates.
Optionally, the constructing a test condition for testing the dynamic power angle stability sensitivity of the target wind farm includes:
constructing a first condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
constructing a second condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
and combining the first condition and the second condition to obtain a test condition for testing the dynamic power angle stability sensitivity of the target wind power plant.
Optionally, the constructing a first condition for testing the dynamic power angle stability sensitivity of the target wind farm includes:
determining other wind farms than the target wind farm in each wind farm;
and setting the state of each other wind power plant as a shutdown state.
Optionally, the constructing a second condition for testing the dynamic power angle stability sensitivity of the target wind farm includes:
and when the target wind power plant operates, simulating a fault in the alternating current sending-out channel, and disconnecting the alternating current A line.
A testing device for wind power dynamic power angle stability comprises:
the simulation model creating unit is used for creating a simulation model of the wind-fire bundling alternating-current sending system, and the simulation model comprises a plurality of wind power plants;
the sensitivity testing unit is used for carrying out dynamic power angle stability sensitivity testing on each wind power plant in the simulation model to obtain the dynamic power angle stability sensitivity of each wind power plant on the simulation model;
and the power angle stability determining unit is used for determining the dynamic power angle stability of each wind power plant on the simulation model, and the dynamic power angle stability of each wind power plant on the simulation model is in a negative correlation with the dynamic power angle stability sensitivity of the wind power plant on the simulation model.
Optionally, the simulation model further includes a plurality of fire fields, wind power collecting stations with the same number as the wind power plants, a wind-fire bundling collecting station and a main network, each wind power plant transmits wind power generation energy of the wind power plant to the wind power collecting station corresponding to the wind power plant, each wind power collecting station transmits the wind power generation energy of each wind power plant to the wind-fire bundling collecting station in a serial connection manner, each fire field transmits the fire power generation energy of the fire power plant to the wind-fire bundling collecting station, and the wind-fire bundling collecting station is connected with the main network through an alternating current sending-out channel including an alternating current a line, an alternating current b line and an alternating current c line;
the sensitivity testing unit comprises:
the target wind power plant determining unit is used for setting the output power of each wind power plant as preset power under the constant output of each thermal power plant, and determining the wind power plant with the preset power as a target wind power plant;
the test condition construction unit is used for constructing a test condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
the active power obtaining unit is used for obtaining the active power of the alternating current B line under the test condition;
the damping ratio calculation unit is used for calculating the damping ratio of the alternating current second line when the target wind power plant runs through a prony analysis module in electromechanical transient calculation software based on the active power of the alternating current second line;
and the sensitivity determining unit is used for determining the dynamic power angle stability sensitivity of the target wind power plant to the simulation model based on the damping ratio of the alternating current B line when the target wind power plant operates.
Optionally, the test condition constructing unit includes:
the first test condition construction subunit is used for constructing a first condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
the second test condition constructing subunit is used for constructing a second condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
and a third test condition constructing subunit, configured to combine the first condition and the second condition to obtain a test condition for testing the dynamic power angle stability sensitivity of the target wind farm.
Optionally, the first test condition constructing subunit includes:
the other wind power plant determining unit is used for determining other wind power plants except the target wind power plant in each wind power plant;
and the shutdown setting unit is used for setting the state of each other wind power plant to be a shutdown state.
Optionally, the second test condition constructing subunit includes:
and the fault simulation unit is used for simulating a fault in the alternating current sending channel when the target wind power plant operates, and disconnecting the alternating current A line.
By means of the technical scheme, the wind-fire bundling and alternating-current sending-out system simulation model is created, the simulation model comprises a plurality of wind power plants, each wind power plant in the simulation model is subjected to dynamic power angle stability sensitivity testing, dynamic power angle stability sensitivity of each wind power plant to the simulation model is obtained, the dynamic power angle stability of each wind power plant to the simulation model is determined, and each wind power plant is in a negative correlation relation with the dynamic power angle stability sensitivity of the wind power plant to the simulation model. Therefore, wind and fire bundling is simulated in simulation software through the alternating current sending-out system, dynamic power angle stability sensitivity test is carried out on each wind power plant, dynamic power angle stability sensitivity of each wind power plant to the simulation model is analyzed, dynamic power angle stability of each wind power plant to the simulation model in a negative correlation relation with the sensitivity can be determined, output certainty of the wind and fire bundling through the alternating current sending-out system is improved, the power system dispatching mechanism is facilitated to arrange the operation mode of each wind power plant, and stable control and switching-out are carried out.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic flow chart illustrating a process for testing wind power dynamic power angle stability according to an embodiment of the present application;
FIG. 2 is a schematic view of a simulation model of a wind fire bundling and ac sending system according to an embodiment of the present disclosure;
fig. 3 is a schematic flow chart illustrating a test of wind power dynamic power angle stability sensitivity according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a device for testing wind power dynamic power angle stability according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a device for testing wind power dynamic power angle stability according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The scheme can be realized based on a terminal with data processing capacity, and the terminal can be a computer, a server, a cloud terminal and the like with a power system simulation function.
Next, referring to fig. 1, the method for testing the wind power dynamic power angle stability of the present application may include the following steps:
and step S110, creating a simulation model of the wind-fire bundling and alternating current sending system.
Specifically, various power parameters of the wind-fire bundling and alternating-current sending-out system can be obtained in advance, and after a topological structure of a simulation model of the wind-fire bundling and alternating-current sending-out system is created, parameters of corresponding equipment are set according to the power parameters.
The simulation model can comprise a plurality of wind power plants, and each wind power plant in the simulation model is a test object for testing the dynamic power angle stability sensitivity.
And S120, carrying out dynamic power angle stability sensitivity test on each wind power plant in the simulation model to obtain the dynamic power angle stability sensitivity of each wind power plant on the simulation model.
Specifically, the dynamic power angle stability sensitivity test may be performed under specific test environments and test conditions by measuring key parameters from power elements in the simulation model and obtaining dynamic power angle stability sensitivity from the key parameters, where the test environments are different for the dynamic power angle stability sensitivity test of different wind farms. After the dynamic power angle stability sensitivity of one wind power plant to the simulation model is measured, the dynamic power angle stability sensitivity test can be carried out on the next wind power plant until all the wind power plants in the simulation model are tested.
Step S130, determining the dynamic power angle stability of each wind power plant to the simulation model, wherein the dynamic power angle stability of each wind power plant to the simulation model is in a negative correlation relation with the dynamic power angle stability sensitivity of the wind power plant to the simulation model.
Specifically, the dynamic power angle stability of each wind farm to the simulation model is in a negative correlation with the dynamic power angle stability sensitivity of the wind farm to the simulation model, which may indicate that the higher the dynamic power angle stability sensitivity of the wind farm to the simulation model is, the weaker the dynamic power angle stability of the wind farm to the simulation model is. The relationship of the dynamic power angle stability among the wind power plants can also be represented, for example, in each wind power plant of the simulation model, the dynamic power angle stability sensitivity of the wind power plant a to the simulation model is higher than the dynamic power angle stability sensitivity of the wind power plant B to the simulation model, and then the dynamic power angle stability of the wind power plant a to the simulation model is weaker than the dynamic power angle stability of the wind power plant B to the simulation model.
According to the method for testing the dynamic power angle stability of the wind power, a simulation model of a system is sent out through alternating current by creating wind-fire bundling, the simulation model comprises a plurality of wind power plants, dynamic power angle stability sensitivity of each wind power plant in the simulation model is tested, the dynamic power angle stability sensitivity of each wind power plant to the simulation model is obtained, the dynamic power angle stability of each wind power plant to the simulation model is determined, and the dynamic power angle stability of each wind power plant to the simulation model is in a negative correlation relation with the dynamic power angle stability sensitivity of the wind power plant to the simulation model. Therefore, wind and fire bundling is simulated in simulation software through the alternating current sending-out system, dynamic power angle stability sensitivity testing is respectively carried out on each wind power plant, and the dynamic power angle stability sensitivity of each wind power plant on the simulation model is analyzed, so that the dynamic power angle stability of each wind power plant on the simulation model, which is in a negative correlation with the sensitivity, can be determined, the output certainty of the wind and fire bundling through the alternating current sending-out system is improved, the arrangement of the operation mode of each wind power plant by a power system dispatching mechanism is facilitated, and the generator tripping is stably controlled.
In some embodiments of the present application, when testing the dynamic power angle stability sensitivity of each wind farm, a test condition needs to be established in a simulation model of a wind-fire bundling through an ac sending-out system, wherein the simulation model of the wind-fire bundling through the ac sending-out system is shown in fig. 2, the wind farm in the simulation model may include at least one wind turbine, the simulation model may further include a plurality of wind power plants, wind power collecting stations having the same number as the wind farm, a wind-fire bundling collecting station and a main grid, each wind power collecting station may transmit wind power energy of the wind farm to a wind power collecting station corresponding to the wind farm, each wind power collecting station may transmit wind power energy of each wind farm to the wind-fire bundling collecting station in a serial connection manner, each wind power plant may transmit the wind power energy of the thermal power plant to the wind-fire bundling collecting station, the wind-fire bundling station may collect an ac sending-out channel including an ac first line, an ac second line and an ac third line, and the main grid may be connected to the main grid.
Based on this and with reference to fig. 3, the above step S120 of performing a dynamic power angle stability sensitivity test on each wind farm in the simulation model to obtain a process of obtaining a dynamic power angle stability sensitivity of each wind farm to the simulation model is introduced, where the process may include:
step S210, under the condition of constant output of each thermal power plant, setting the output power of each wind power plant as preset power, and determining the wind power plant with the preset power as a target wind power plant.
Specifically, the preset power may represent a fixed operation power of the wind farm during the dynamic power angle stability sensitivity test, and may be 100MW.
And S220, constructing a test condition for testing the dynamic power angle stability sensitivity of the target wind power plant.
It can be understood that the dynamic power angle stability sensitivity test of each wind farm needs to be performed only when the test condition is met, so that a test condition for testing the dynamic power angle stability sensitivity of the target wind farm needs to be established.
Specifically, the process of constructing the test condition for testing the dynamic power angle stability sensitivity of the target wind farm may include:
s2201, constructing a first condition for testing the dynamic power angle stability sensitivity of the target wind power plant.
Specifically, the process of constructing the first condition may include determining, in each wind farm, other wind farms than the target wind farm, and setting the state of each of the other wind farms to a shutdown state.
It can be understood that for the dynamic power angle stability sensitivity test of the target wind power plant, except for the other wind power plants of the target wind power plant, the operation needs to be suspended, so that the influence of each wind power plant on the test environment is only generated by the target wind power plant, and the interference of the other wind power plants on the test environment is eliminated.
S2202, establishing a second condition for testing the dynamic power angle stability sensitivity of the target wind power plant.
Specifically, the process of constructing the second condition may include simulating a fault in the ac sending-out channel and disconnecting the ac first line when the target wind farm is operating.
Specifically, when different target wind power plants run, the simulation faults set in the alternating current sending channel can be the same, fault enabling can be triggered through simulation software, a simulation fault is set in a sending line in the simulation model, and the alternating current A line in the sending line in the simulation model is disconnected by triggering the open-circuit fault through the simulation software.
S2203, combining the first condition and the second condition to obtain a test condition for testing the dynamic power angle stability sensitivity of the target wind power plant.
Specifically, the test conditions are that in the simulation circuit, the other wind power plants except the target wind power plant are all suspended from operation, and the alternating current sending channel has a fault and the alternating current A line is disconnected.
And step S230, acquiring the active power of the alternating current B line under the test condition.
Specifically, the active power output by the alternating current line B in the alternating current sending-out channel can be measured in the environment that the other wind power plants except the target wind power plant are completely suspended from running, the alternating current sending-out channel is in fault, and the alternating current line A is disconnected.
It can be understood that the active power of the alternating current second line is the active power of the power sent out after the wind power of the target wind power plant and the thermal power of each thermal power plant are bundled, and the output of the thermal power plant is constant, so the active power of the alternating current second line can reflect the output of the target wind power plant.
And S240, calculating the damping ratio of the alternating current B line when the target wind power plant runs through a prony analysis module in electromechanical transient calculation software based on the active power of the alternating current B line.
And S250, determining the dynamic power angle stability sensitivity of the target wind power plant to the simulation model based on the damping ratio of the alternating current B line when the target wind power plant operates.
Specifically, the damping ratio of the ac line of the target wind farm during operation may be in a negative correlation with the dynamic power angle stability sensitivity of the target wind farm to the simulation model, that is, the larger the damping ratio of the ac line of the target wind farm during operation is, the smaller the dynamic power angle stability sensitivity of the target wind farm to the simulation model is. For different target wind power plants, the damping ratio of the alternating current B line measured when the target wind power plant C operates is larger than that of the alternating current B line measured when the target wind power plant D operates, and then the dynamic power angle stability sensitivity of the target wind power plant C to the simulation model is smaller than that of the target wind power plant D to the simulation model.
After the dynamic power angle stability sensitivity of all the wind power plants to the simulation model is obtained, sorting can be performed based on the sensitivity, which is beneficial to the arrangement of the operation mode of each wind power plant by a power system dispatching mechanism and the sorting of the priority of the stability control generator tripping of each wind power plant.
According to the method for testing the wind power dynamic power angle stability, each target wind power plant for testing the dynamic power angle stability sensitivity is determined, the test condition is set, the active power of the alternating current second line is tested under the test condition, the damping ratio of the alternating current second line is obtained through analysis, the dynamic power angle stability sensitivity of the target wind power plant, which has a negative correlation with the damping ratio, is determined, the arrangement of the operation mode of each wind power plant by a power system dispatching mechanism is facilitated, and the priority sequence of the stability control switch machine of each wind power plant is sequenced.
The testing apparatus for realizing the wind power dynamic power angle stability provided in the embodiment of the present application is described below, and the testing apparatus for realizing the wind power dynamic power angle stability described below and the testing method for realizing the wind power dynamic power angle stability described above may be referred to in a mutually corresponding manner.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a testing apparatus for implementing wind power dynamic power angle stability disclosed in the embodiment of the present application.
As shown in fig. 4, the apparatus may include:
the simulation model creating unit 11 is used for creating a simulation model of the wind-fire bundling alternating-current sending system, and the simulation model comprises a plurality of wind power plants;
the sensitivity testing unit 12 is configured to perform a dynamic power angle stability sensitivity test on each wind farm in the simulation model to obtain a dynamic power angle stability sensitivity of each wind farm to the simulation model;
and the power angle stability determining unit 13 is configured to determine the dynamic power angle stability of each wind farm to the simulation model, where the dynamic power angle stability of each wind farm to the simulation model is in a negative correlation with the dynamic power angle stability sensitivity of the wind farm to the simulation model.
Optionally, the simulation model further includes a plurality of fire fields, wind power collecting stations with the same number as the wind power plants, a wind power bundling collecting station and a main network, each wind power plant transmits wind power energy of the wind power plant to the wind power collecting station corresponding to the wind power plant, each wind power collecting station transmits wind power energy of each wind power plant to the wind power bundling collecting station in a series connection manner, each fire field transmits the fire power energy of the fire power plant to the wind power bundling collecting station, and the wind power bundling collecting station is connected with the main network through an alternating current sending-out channel including an alternating current first line, an alternating current second line and an alternating current third line;
the sensitivity test unit 12 includes:
the target wind power plant determining unit is used for setting the output power of each wind power plant as preset power under the constant output of each thermal power plant, and determining the wind power plant with the preset power as a target wind power plant;
the test condition construction unit is used for constructing a test condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
the active power obtaining unit is used for obtaining the active power of the alternating current B line under the test condition;
the damping ratio calculation unit is used for calculating the damping ratio of the alternating current second line when the target wind power plant runs through a prony analysis module in electromechanical transient calculation software based on the active power of the alternating current second line;
and the sensitivity determining unit is used for determining the dynamic power angle stability sensitivity of the target wind power plant to the simulation model based on the damping ratio of the alternating current B line when the target wind power plant operates.
Optionally, the test condition constructing unit includes:
the first test condition construction subunit is used for constructing a first condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
the second test condition constructing subunit is used for constructing a second condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
and a third test condition constructing subunit, configured to combine the first condition and the second condition to obtain a test condition for testing the dynamic power angle stability sensitivity of the target wind farm.
Optionally, the first test condition constructing subunit includes:
the other wind power plant determining unit is used for determining other wind power plants except the target wind power plant in each wind power plant;
and the shutdown setting unit is used for setting the state of each other wind power plant to be a shutdown state.
Optionally, the second test condition constructing subunit includes:
and the fault simulation unit is used for simulating a fault in the alternating current sending-out channel when the target wind power plant operates, and disconnecting the alternating current A line.
The testing device for the wind power dynamic power angle stability provided by the embodiment of the application can be applied to testing equipment for the wind power dynamic power angle stability, such as a terminal: mobile phones, computers, etc. Optionally, fig. 3 shows a block diagram of a hardware structure of the test device for wind power dynamic power angle stability, and referring to fig. 3, the hardware structure of the test device for wind power dynamic power angle stability may include: at least one processor 1, at least one communication interface 2, at least one memory 3 and at least one communication bus 4;
in the embodiment of the application, the number of the processor 1, the communication interface 2, the memory 3 and the communication bus 4 is at least one, and the processor 1, the communication interface 2 and the memory 3 complete mutual communication through the communication bus 4;
the processor 1 may be a central processing unit CPU, or an Application Specific Integrated Circuit ASIC (Application Specific Integrated Circuit), or one or more Integrated circuits or the like configured to implement an embodiment of the present invention;
the memory 3 may include a high-speed RAM memory, and may further include a non-volatile memory (non-volatile memory) or the like, such as at least one disk memory;
wherein the memory stores a program and the processor can call the program stored in the memory, the program for:
creating a simulation model of the wind-fire bundling and alternating-current sending system, wherein the simulation model comprises a plurality of wind power plants;
carrying out dynamic power angle stability sensitivity test on each wind power plant in the simulation model to obtain the dynamic power angle stability sensitivity of each wind power plant to the simulation model;
and determining the dynamic power angle stability of each wind power plant to the simulation model, wherein the dynamic power angle stability of each wind power plant to the simulation model is in a negative correlation with the dynamic power angle stability sensitivity of the wind power plant to the simulation model.
Alternatively, the detailed function and the extended function of the program may be as described above.
An embodiment of the present application further provides a storage medium, where the storage medium may store a program adapted to be executed by a processor, where the program is configured to:
creating a simulation model of the wind-fire bundling and alternating-current sending system, wherein the simulation model comprises a plurality of wind power plants;
carrying out dynamic power angle stability sensitivity test on each wind power plant in the simulation model to obtain the dynamic power angle stability sensitivity of each wind power plant to the simulation model;
and determining the dynamic power angle stability of each wind power plant to the simulation model, wherein the dynamic power angle stability of each wind power plant to the simulation model is in a negative correlation with the dynamic power angle stability sensitivity of the wind power plant to the simulation model.
Alternatively, the detailed function and the extended function of the program may refer to the above description.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, the embodiments may be combined as needed, and the same and similar parts may be referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for testing wind power dynamic power angle stability is characterized by comprising the following steps:
creating a simulation model of the wind-fire bundling and alternating-current sending system, wherein the simulation model comprises a plurality of wind power plants;
carrying out dynamic power angle stability sensitivity test on each wind power plant in the simulation model to obtain the dynamic power angle stability sensitivity of each wind power plant to the simulation model;
and determining the dynamic power angle stability of each wind power plant to the simulation model, wherein the dynamic power angle stability of each wind power plant to the simulation model is in a negative correlation with the dynamic power angle stability sensitivity of the wind power plant to the simulation model.
2. The method according to claim 1, wherein the simulation model further comprises a plurality of fire fields, wind power collecting stations with the same number as the wind power fields, wind and fire bundling collecting stations and a main network, each wind power field transmits wind power generation energy of the wind power field to the wind power collecting station corresponding to the wind power field, each wind power collecting station transmits the wind power generation energy of each wind power field to the wind and fire bundling collecting station in a series connection mode, each fire field transmits the fire power generation energy of the fire power field to the wind and fire bundling collecting station, and the wind and fire bundling collecting station is connected with the main network through an alternating current sending-out channel comprising an alternating current A line, an alternating current B line and an alternating current C line;
and carrying out dynamic power angle stability sensitivity test on each wind power plant in the simulation model to obtain the dynamic power angle stability sensitivity of each wind power plant to the simulation model, wherein the dynamic power angle stability sensitivity test comprises the following steps:
under the constant output of each thermal power plant, setting the output power of each wind power plant as preset power, and determining the wind power plant with the preset power as a target wind power plant;
constructing a test condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
under the test condition, acquiring active power of the alternating current B line;
calculating the damping ratio of the alternating current B line when the target wind power plant runs through a prony analysis module in electromechanical transient calculation software based on the active power of the alternating current B line;
and determining the dynamic power angle stability sensitivity of the target wind power plant to the simulation model based on the damping ratio of the alternating current B line when the target wind power plant operates.
3. The method of claim 2, wherein the constructing test conditions for testing the dynamic power angle stability sensitivity of the target wind farm comprises:
constructing a first condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
constructing a second condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
and combining the first condition and the second condition to obtain a test condition for testing the dynamic power angle stability sensitivity of the target wind power plant.
4. The method of claim 3, wherein constructing the first condition for testing the dynamic power angle stability sensitivity of the target wind farm comprises:
determining other wind power plants except the target wind power plant in each wind power plant;
and setting the state of each other wind power plant as a shutdown state.
5. The method of claim 3, wherein constructing the second condition for testing the dynamic power angle stability sensitivity of the target wind farm comprises:
and when the target wind power plant operates, simulating a fault in the alternating current sending-out channel, and disconnecting the alternating current A line.
6. The utility model provides a testing arrangement of wind-powered electricity generation developments merit angle stability which characterized in that includes:
the simulation model creating unit is used for creating a simulation model of the wind-fire bundling alternating-current sending system, and the simulation model comprises a plurality of wind power plants;
the sensitivity testing unit is used for carrying out dynamic power angle stability sensitivity testing on each wind power plant in the simulation model to obtain the dynamic power angle stability sensitivity of each wind power plant on the simulation model;
and the power angle stability determining unit is used for determining the dynamic power angle stability of each wind power plant to the simulation model, and the dynamic power angle stability of each wind power plant to the simulation model is in a negative correlation with the dynamic power angle stability sensitivity of the wind power plant to the simulation model.
7. The device of claim 6, wherein the simulation model further comprises a plurality of fire fields, wind power collecting stations with the same number as the wind power fields, wind and fire bundling collecting stations and a main network, each wind power field transmits the wind power generation energy of the wind power field to the wind power collecting station corresponding to the wind power field, each wind power collecting station transmits the wind power generation energy of each wind power field to the wind and fire bundling collecting station in a series connection manner, each fire field transmits the fire power generation energy of the fire power field to the wind and fire bundling collecting station, and the wind and fire bundling collecting station is connected with the main network through an alternating current sending-out channel comprising an alternating current A line, an alternating current B line and an alternating current C line;
the sensitivity testing unit comprises:
the target wind power plant determining unit is used for setting the output power of each wind power plant as preset power under the constant output of each thermal power plant, and determining the wind power plant with the preset power as a target wind power plant;
the test condition construction unit is used for constructing a test condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
the active power obtaining unit is used for obtaining the active power of the alternating current B line under the test condition;
the damping ratio calculation unit is used for calculating the damping ratio of the alternating current B line when the target wind power plant operates through a prony analysis module in electromechanical transient calculation software based on the active power of the alternating current B line;
and the sensitivity determining unit is used for determining the dynamic power angle stability sensitivity of the target wind power plant to the simulation model based on the damping ratio of the alternating current B line when the target wind power plant operates.
8. The apparatus of claim 7, wherein the test condition constructing unit comprises:
the first test condition constructing subunit is used for constructing a first condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
the second test condition constructing subunit is used for constructing a second condition for testing the dynamic power angle stability sensitivity of the target wind power plant;
and the third test condition constructing subunit is used for combining the first condition and the second condition to obtain a test condition for testing the dynamic power angle stability sensitivity of the target wind power plant.
9. The apparatus of claim 8, wherein the first test condition building subunit comprises:
the other wind power plant determining unit is used for determining other wind power plants except the target wind power plant in each wind power plant;
and the shutdown setting unit is used for setting the state of each other wind power plant to be a shutdown state.
10. The apparatus of claim 8, wherein the second test condition building subunit comprises:
and the fault simulation unit is used for simulating a fault in the alternating current sending-out channel when the target wind power plant operates, and disconnecting the alternating current A line.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116388296A (en) * | 2023-04-04 | 2023-07-04 | 山东大学 | Power angle stable control method and system based on sensitivity mapping |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116388296A (en) * | 2023-04-04 | 2023-07-04 | 山东大学 | Power angle stable control method and system based on sensitivity mapping |
| CN116388296B (en) * | 2023-04-04 | 2024-01-23 | 山东大学 | Power angle stable control method and system based on sensitivity mapping |
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