CN113625093A - New energy frequency modulation and inertia function testing system, method, terminal and storage medium - Google Patents
New energy frequency modulation and inertia function testing system, method, terminal and storage medium Download PDFInfo
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- CN113625093A CN113625093A CN202111004238.8A CN202111004238A CN113625093A CN 113625093 A CN113625093 A CN 113625093A CN 202111004238 A CN202111004238 A CN 202111004238A CN 113625093 A CN113625093 A CN 113625093A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
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- H—ELECTRICITY
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- 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
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Abstract
The invention belongs to the field of field testing of a frequency modulation function of a new energy station, and discloses a system, a method, a terminal and a storage medium for testing a new energy frequency modulation and inertia function, a frequency sampling module, a frequency modulation test module, a frequency modulation anti-interference test module and an output module; the frequency sampling module is used for setting frequency variation and frequency variation related parameters; the frequency modulation test module determines to perform a frequency modulation test through frequency single step, frequency continuous step and frequency change rate; the frequency modulation anti-interference test module carries out anti-interference test through high-low voltage ride through, cascading failure test and harmonic wave. The invention provides a new energy frequency modulation and inertia function test method, and provides new energy station frequency modulation function test equipment meeting test requirements by combining new energy station frequency modulation function test contents and requirements according to the test content requirements, so that the new energy station frequency modulation function test equipment can adapt to various test contents, test parameter settings and operation flows of a new energy station level primary frequency modulation test.
Description
Technical Field
The invention belongs to the field of field testing of a frequency modulation function of a new energy station, and particularly relates to a system, a method, a terminal and a storage medium for testing a new energy frequency modulation and inertia function.
Background
At present, frequency is one of important parameters for measuring power supply quality indexes of a power grid, in order to realize safe and stable operation of the power grid and improve the frequency power supply quality of the power grid, the power grids at home and abroad at present require a grid-connected power plant to have certain primary frequency modulation capability, and require that the function is checked and accepted through a field frequency modulation test mode, such as GB/T30370-2013 guide rules for primary frequency modulation test and performance check and acceptance of thermal generator sets, GB/T9652.1-2019 technical conditions for water turbine speed regulation systems, DL/T1245 auxiliary 2013 technical conditions for water turbine regulation system operation, and the like.
Along with the continuous improvement of the ratio of the power generation capacity of the new energy to the total power generation capacity, the frequency fluctuation caused by the active disturbance of the new energy to a power grid is also continuously increased, and the dilemma that the new energy station does not have primary frequency modulation is increasingly prominent. An AGC (automatic generation control) system is applied to a new energy power station and controls the active power of the whole site according to a power grid dispatching instruction. However, in the actual transition process of the power grid system, the frequency modulation method cannot respond quickly according to the change of the frequency, and the regulation period is long, so that the frequency modulation method can only participate in secondary frequency modulation of the power grid.
In recent years, the national energy agency is organizing relevant national standards and line standards such as new energy frequency modulation technical specification solicitation comments, and the like, so that a verification test method for the frequency modulation function of various grid-connected units is clear, and a primary frequency modulation function of the grid-connected unit is required to be verified in a frequency step mode and the like on site, and the site is also executed basically according to the regulation.
Through the above analysis, the problems and defects of the prior art are as follows: in the prior art, the field test of the new energy station level frequency modulation test is realized only in an indirect or incomplete mode.
The difficulty in solving the above problems and defects is:
in order to achieve the above detection purpose, the current engineering industry respectively adopts separate devices according to the test content in terms of signal sources. Such as: aiming at frequency change rate frequency modulation, a signal step mode in relay protection test equipment commonly used in the field of relay protection is adopted on site, but the continuous step quantity of the frequency and the dynamic change process of the frequency cannot be continuously realized; in the anti-interference aspect of the frequency modulation process, such as the anti-interference capability in the high-low penetration process, a new on-site energy unit high-low voltage penetration test device is often adopted for direct simulation, and the test efficiency is seriously reduced by adopting the test method because the test device is 35 kV; or the anti-interference capability of the frequency modulation process is tested by directly adopting the on-site high-low voltage ride through test data in a fault playback mode, but the on-site test data is only high-low ride through test data, corresponding frequency change does not exist during high (low) voltage, the detection of the frequency modulation adjusting function caused by the frequency change in the high-low ride through process cannot be realized, the high-low ride through and low-high ride through times cannot be set at will, and the wide development of the on-site test is limited to a greater extent.
The significance of solving the problems and the defects is as follows:
therefore, in order to improve the power grid friendly level of the large-scale grid connection of new energy in China and further promote the realization of the strategic goal of improving the state of double carbon, the field test integrated equipment with the new energy frequency modulation function, which better meets the field test requirement, is urgently needed to be developed, the field test efficiency is improved, and the test function can cover all contents of the field test, the laboratory network access test content and the like.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a new energy frequency modulation and inertia function testing system, a new energy frequency modulation and inertia function testing method, a new energy frequency modulation and inertia function testing terminal and a storage medium.
The invention is realized in this way, a new energy frequency modulation and inertia function test system, the new energy frequency modulation and inertia function test system includes:
the device comprises a frequency sampling module, a frequency modulation test module, a frequency modulation anti-interference test module and an output module;
a frequency sampling module comprising: a default value setting unit, a frequency variation sampling unit and a frequency variation rate sampling unit; setting the frequency variation and the parameters related to the frequency variation;
frequency modulation test module includes: the device comprises a voltage frequency default value setting unit, a frequency single step unit, a frequency continuous step unit, a frequency change rate determining unit and a frequency data playback unit; the device is used for carrying out frequency modulation experiments;
anti-interference test module of frequency modulation includes: the device comprises a default value adjusting unit, a high-low voltage ride through unit, a cascading failure testing unit, a harmonic unit and a waveform playback unit; the method is used for performing anti-interference test.
Further, the default value setting unit, the voltage frequency default value setting unit and the default value adjusting unit can set default voltage amplitude values and default frequency values.
Further, the frequency sampling module includes:
the frequency variation sampling unit is used for selecting frequency variation sampling as default voltage amplitude and frequency or current parameters set for continuous output; meanwhile, the method is used for determining that the state trigger condition is time trigger or key trigger;
and the frequency change rate sampling unit is used for adjusting the frequency change rate starting frequency and the frequency change rate ending frequency according to the set frequency change rate based on different change states.
Further, the different variation states include: changing from 50Hz to a set cut-off frequency at a set frequency change rate, and continuously outputting the cut-off frequency after the frequency change time is exceeded;
and changing the cut-off frequency to 50Hz according to the set frequency change rate, and continuously outputting the 50Hz after the frequency change time is exceeded.
Further, the frequency change rate starting frequency and the frequency change rate ending frequency are 45 Hz-55 Hz.
Further, the frequency change rate is set within a range of + -0.05 Hz/s to + -3 Hz/s.
Further, the frequency modulation test module comprises:
frequency one-time step unit for setting U respectivelyA、UB、UCFrequency; the device is used for outputting at least two groups of point signals of the nodes or performing state conversion on the actions of the input nodes;
the frequency continuous step unit is used for setting different frequency outputs;
a frequency change rate determining unit for setting an adjustment start frequency and an adjustment end frequency;
and a frequency data playback unit for performing playback of the frequency data.
Another object of the present invention is to provide a new energy frequency modulation and inertia function testing method applied to the new energy frequency modulation and inertia function testing system, where the new energy frequency modulation and inertia function testing method includes:
step one, setting frequency variation and frequency variation related parameters;
and respectively setting the state sequences of each frequency modulation stage by adopting a state sequence mode. If the whole frequency modulation process is set to be a state before frequency modulation, a state after frequency modulation and a state after frequency modulation, the amplitude, the frequency and the phase of the voltage signal to be output corresponding to each state and the corresponding duration are set in the process; in order to keep stability, the voltage amplitude of each phase of frequency modulation can be set to be 57.75V, and the corresponding state sequence before frequency modulation sets the frequency of an output signal to be 50 Hz; setting the signal frequency as a test value, such as 50.5Hz, in the frequency modulation process, entering a frequency-modulated state after the duration time is 15 seconds, and setting to recover to normal 50 Hz;
determining to perform a frequency modulation experiment through frequency single step, frequency continuous step and frequency change rate, and performing frequency data playback;
aiming at the test contents of single frequency step and continuous step frequency modulation, referring to the step one, on the basis of three state sequence division modes before, during and after frequency modulation, the number of state sequences in frequency modulation is increased, for example: 50.0Hz-50.2Hz-50.5Hz-50.2Hz-50.1Hz-50.0Hz, only the state sequences corresponding to 50.2, 50.5, 50.2 and 50.1 are added in the frequency modulation process, and the duration is set.
Aiming at the frequency change rate frequency modulation test, setting the initial frequency of 50.0Hz, the termination frequency of 51Hz and the continuous change time of 5.0 seconds, wherein the continuous change time is needed by the frequency change from the initial frequency to the termination frequency, and calculating the corresponding frequency change speed, namely the frequency change rate, in the system, and setting according to the data parameters to obtain the frequency change rate of 0.2 Hz/s; in the test process, the duration of the corresponding frequency change process is deduced backwards according to the frequency change rate required by the site.
And step three, performing anti-interference test through high and low voltage ride through, cascading failure test and harmonic wave, and performing waveform playback.
Carrying out simulation work according to a field test environment and steps by adopting digsilent PowerFactry simulation software to obtain corresponding high (low) voltage ride through, cascading failure ride through and harmonic wave test data, carrying out format conversion according to a power system fault recording data standard format to obtain a corresponding field test basic data source of the anti-interference capability of the frequency modulation field frequency modulation function, importing the basic data source into field test equipment and outputting a corresponding voltage signal for the frequency modulation function test, wherein the signal comprises corresponding high (low) voltage information, cascading failure information, harmonic wave information and the like for the frequency modulation anti-interference capability test.
Another object of the present invention is to provide a program storage medium for receiving a user input, wherein a stored computer program enables an electronic device to execute the new energy frequency modulation and inertia function testing method, comprising the steps of:
step one, setting frequency variation and frequency variation related parameters;
determining to perform a frequency modulation experiment through frequency single step, frequency continuous step and frequency change rate, and performing frequency data playback;
and step three, performing anti-interference test through high and low voltage ride through, cascading failure test and harmonic wave, and performing waveform playback.
Another object of the present invention is to provide an information data processing terminal, which includes a memory and a processor, wherein the memory stores a computer program, and the computer program, when executed by the processor, causes the processor to execute the new energy frequency modulation and inertia function testing method.
By combining all the technical schemes, the invention has the advantages and positive effects that: the invention provides a new energy frequency modulation and inertia function test method, and provides new energy station frequency modulation function test equipment meeting test requirements by combining new energy station frequency modulation function test contents and requirements according to the test content requirements, so that the new energy station frequency modulation function test equipment can adapt to various test contents, test parameter settings and operation flows of a new energy station level primary frequency modulation test.
Drawings
Fig. 1 is a schematic structural diagram of a new energy frequency modulation and inertia function testing system according to an embodiment of the present invention;
in the figure: 1. a frequency sampling module; 2. a frequency modulation test module; 3. a frequency modulation anti-interference test module; 4. an output module; 11. a default value setting unit; 12. a frequency variation sampling unit; 13. a frequency change rate sampling unit; 21. a voltage frequency default setting unit; 22. a frequency one-time step unit; 23. a frequency continuous step unit; 24. a frequency change rate determination unit; 25. a frequency data playback unit; 31. a default value adjusting unit; 32. a high-low voltage ride through unit; 33. a cascading failure testing unit; 34. harmonic unit 35, waveform playback unit.
Fig. 2 is a flowchart of a new energy frequency modulation and inertia function testing method provided in the embodiment of the present invention.
Fig. 3 is a schematic diagram of a module 21 and 22 provided in the embodiment of the present invention, in which a state sequence mode is respectively adopted to set a frequency before frequency modulation of 50.0Hz, a frequency target frequency, and a frequency after frequency modulation of 50.0Hz, and a frequency modulation target frequency in the lower diagram is 49.8 Hz.
Fig. 4 is a schematic diagram of a state sequence manner in a process of adding frequency modulation according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of the frequency change rate test output goal of 0.2Hz/S and-0.2 Hz/S, which is provided by the embodiment of the present invention, by setting the initial frequency of 50.0Hz and the target frequency of 48Hz in the frequency modulation process, wherein the change process lasts for 10.0 seconds, and the frequency change rate returns to 50.0Hz within the time range of 10 seconds from 48Hz after 5 seconds.
Fig. 6 is a schematic diagram of output voltage frequency variation in a dynamic continuous process formed in a system according to an embodiment of the present invention, in which the dynamic playback waveform of the set model is implemented by using the Digsilent PowerFactory simulation software.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Aiming at the problems in the prior art, the invention provides a new energy frequency modulation and inertia function testing system, which is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a new energy frequency modulation and inertia function testing system provided by the embodiment of the present invention includes:
the target frequency is set in the setting unit 11 and the module 12, respectively, as shown in the following table:
for block 13, a frequency variation range is fixed in the block, e.g., 50.0Hz-55Hz, and the required duration is calculated according to the required frequency variation rate to form the desired output voltage frequency variation rate:
frequency modulation test module 2 includes: a voltage frequency default value setting unit 21, a frequency one-time step unit 22, a frequency continuous step unit 23, a frequency change rate determining unit 24, and a frequency data playback unit 25; the device is used for carrying out frequency modulation experiments;
for the single step of the frequency of the modules 21 and 22, a state sequence mode is respectively adopted to set a frequency before frequency modulation of 50.0Hz, a frequency target frequency and a frequency after frequency modulation of 50.0Hz, wherein the frequency target frequency in the lower graph is 49.8Hz, and the schematic diagram is shown in fig. 3.
For the module 23, by adding a state sequence mode in the frequency modulation process, for example, the dark black line frequency in fig. 4 is set to 50.0Hz-50.3Hz-49.8Hz-50.0Hz, and the frequency finally returns to the steady-state frequency of 50.0Hz of the system steady state through 2 continuous step modes.
For the module 24, the initial frequency of 50.0Hz and the target frequency of 48Hz are set in the frequency modulation process, the frequency modulation process lasts for 10.0 seconds, and 50.0Hz is returned from 48Hz within the time range of 10 seconds after 5 seconds, so that the frequency change rate test output purposes of 0.2Hz/S and-0.2 Hz/S are respectively realized, as shown in the dark black curve in the following fig. 5.
For the module 25, the dynamic playback waveform of the set model is realized by using the aforementioned Digsilent PowerFactory simulation software, and in the system related to the present invention, the output voltage frequency change in the dynamic continuous process is formed, as shown by the dark black curve with the frequency of about 50.23Hz in fig. 6.
Anti-interference test module of frequency modulation 3 includes: the device comprises a default value adjusting unit 31, a high-low voltage ride through unit 32, a cascading failure testing unit 33, a harmonic unit 34 and a waveform playback unit 35; the device is used for carrying out anti-interference test;
the anti-interference modules 31, 32, 33 and 35 are used. The voltage amplitudes corresponding to the state sequences corresponding to the high (low) voltage ride through process are respectively set, the low ride through starting voltage 57.74V (1.0pu) is set, the voltage 11.548V (0.2pu) in the low ride through process is set, and the steady-state voltage 57.74V (1.0pu) is recovered after the duration of 625 milliseconds, and the principle is basically similar to the frequency variation process.
For the harmonic unit 34, on the basis of setting the fundamental voltage amplitude 57.74V, the frequency 50Hz, and the initial phase angle 0 degree, the amplitude and the phase of each harmonic in the harmonic unit are respectively set, such as 2-harmonic amplitude 3.0V, phase 30 degree, 5-harmonic amplitude 5.0V, phase 30 degree, and the like, and finally, a comprehensive output waveform of fundamental wave overlapping each harmonic is formed.
And the output module 4 is used for displaying the voltage, the current and the state sequence and outputting the result at the same time.
The module is mainly used for laboratory detection of frequency modulation functions, and comprehensive response feedback of a simulated new energy power plant to various kinds of frequency modulation instruction information is achieved by changing state sequences of output voltages corresponding to various parameters.
The default value setting unit, the voltage frequency default value setting unit and the default value adjusting unit provided by the embodiment of the invention can set the default voltage amplitude value and the default frequency value.
The frequency sampling module 1 provided by the embodiment of the invention comprises:
a frequency variation sampling unit 12, configured to select frequency variation sampling as a default voltage amplitude and frequency set for continuous output or a current parameter; meanwhile, the method is used for determining that the state trigger condition is time trigger or key trigger;
and a frequency change rate sampling unit 13 for adjusting the frequency change rate according to the set frequency change rate in the frequency change rate start frequency and the frequency end frequency based on different change states.
The different change states provided by the embodiment of the invention comprise: changing from 50Hz to a set cut-off frequency at a set frequency change rate, and continuously outputting the cut-off frequency after the frequency change time is exceeded;
and changing the cut-off frequency to 50Hz according to the set frequency change rate, and continuously outputting the 50Hz after the frequency change time is exceeded.
The frequency change rate provided by the embodiment of the invention has the initial frequency and the termination frequency of 45 Hz-55 Hz.
The frequency change rate setting range provided by the embodiment of the invention is +/-0.05 Hz/s to +/-3 Hz/s.
The frequency modulation test module 2 provided by the embodiment of the invention comprises:
frequency one-time step unit 22 for setting U separatelyA、UB、UCFrequency; the device is used for outputting at least two groups of point signals of the nodes or performing state conversion on the actions of the input nodes;
a frequency continuous step unit 23 for setting different frequency outputs;
a frequency change rate determining unit 24 for setting an adjustment start frequency and an adjustment end frequency;
a frequency data playback unit 25 for performing playback of the frequency data.
As shown in fig. 2, the method for testing frequency modulation and inertia of new energy according to the embodiment of the present invention includes:
s101, setting frequency variation and frequency variation related parameters;
s102, determining to perform a frequency modulation experiment through frequency single step, frequency continuous step and frequency change rate, and performing frequency data playback;
and S103, carrying out anti-interference test through high-low voltage ride through, cascading failure test and harmonic wave, and carrying out waveform playback.
In step S103, the method specifically includes: carrying out simulation work according to a field test environment and steps by adopting digsilent PowerFactry simulation software to obtain corresponding high (low) voltage ride through, cascading failure ride through and harmonic wave test data, carrying out format conversion according to a power system fault recording data standard format to obtain a corresponding field test basic data source of the anti-interference capability of the frequency modulation field frequency modulation function, importing the basic data source into field test equipment and outputting a corresponding voltage signal for the frequency modulation function test, wherein the signal comprises corresponding high (low) voltage information, cascading failure information, harmonic wave information and the like for the frequency modulation anti-interference capability test.
The technical solution of the present invention is further described with reference to the following specific embodiments.
Example (b):
firstly, designing main interface functions:
1. adding the functions of frequency sampling, frequency modulation function testing and frequency modulation anti-interference testing to the existing main interface, which is described in detail below;
2. the frequency change rate (df/dt) output function is added on the basis of the existing state sequence.
II, frequency sampling interface:
the frequency sampling interface has the functions of 'system default value', 'frequency variation (delta f) sampling' and 'frequency variation rate (df/dt) sampling'; wherein the "system default value" can set a default voltage amplitude value (57.735V), a default frequency value (50 Hz).
Wherein:
"frequency variation (Δ f) sampling" may be set:
(1) "state 0", "state 1", "state 2", wherein "state 0", "state 2" indicate the default voltage amplitude and frequency of the continuous output setting; "state 1" represents the current parameter settings page; the state trigger condition can select 2 working conditions of 'time trigger' and 'key trigger'.
(2) The operation sequence is as follows: the "start" key → the "state 0" default value of continuous output → pressing "Tab" or the next state key → outputting "state 1" value (the state end can select two conditions of time trigger and key trigger) → pressing "Tab" or the next state key → continuously outputting "state 2" value → stopping.
"frequency variation (Δ f) sampling" may be set:
(1) the frequency change rate set point may be set to "±;
(2) the frequency change rate range can be from +/-0.05 Hz/s to +/-3 Hz/s;
(3) start and end frequency ranges: 45Hz to 55 Hz;
(4) "state 1": starting to change from 50Hz with a set frequency change rate to a set cut-off frequency, and continuously outputting the cut-off frequency after the frequency change time is exceeded (two working conditions of time triggering and key triggering can be selected when the state is finished);
(5) "state 2": the cut-off frequency is changed to 50Hz according to the set frequency change rate, and the 50Hz is continuously output after the frequency change time is exceeded.
(6) The operation sequence is as follows: the "start" key → the "state 0" default value of continuous output → pressing "Tab" or the next state key → outputting "state 1" value (the state end can select two conditions of time trigger and key trigger) → pressing "Tab" or the next state key → continuously outputting "state 2" value → stopping.
Thirdly, primary frequency modulation test:
the primary frequency modulation test interface has to be provided with a system default value, a frequency single step, a frequency continuous step, a frequency change rate (df/dt), and a frequency data playback; wherein the default voltage amplitude (57.735V) and the default frequency value (50Hz) can be set but can be adjusted.
Wherein:
"frequency single step" design is as follows:
(1) UA, UB and UC frequencies can be set respectively;
(2) entering the state 1, at least two groups of point signals can be output;
(3) the input node acts and can stop "state 1" and enter "state 2".
"frequency continuous step" design is as follows:
(1) the state 1 and the state 2 can be respectively set with different frequency outputs;
(2) the operation process comprises the following steps: the operation process comprises the following steps: the "start" key → the "state 0" default value of continuous output → press "Tab" or the next state key → output "state 1" value (the state end can select two conditions of time trigger and key trigger) → press "Tab" or the next state key → continuously output "state 2" value → press "Tab" or the next state key → continuously output "state 3" (default voltage magnitude and frequency) → stop.
The "frequency rate of change test" is designed as follows:
(1) the default values of the starting frequency and the ending frequency are 50Hz, but can be adjusted;
(2) the operation sequence is the same as the frequency change rate sampling interface function.
"frequency data playback".
Fourthly, frequency modulation anti-interference test:
the frequency modulation anti-interference test interface has to have a system default value, a high-low voltage ride through, a cascading failure test, a harmonic wave and a waveform playback; wherein the default voltage amplitude (57.735V) and the default frequency value (50Hz) can be set but can be adjusted.
Wherein the testing is carried out:
"high and low voltage ride through";
"cascading failure testing";
"waveform playback".
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
It should be noted that the embodiments of the present invention can be realized by hardware, software, or a combination of software and hardware. The hardware portion may be implemented using dedicated logic; the software portions may be stored in a memory and executed by a suitable instruction execution system, such as a microprocessor or specially designed hardware. Those skilled in the art will appreciate that the apparatus and methods described above may be implemented using computer executable instructions and/or embodied in processor control code, such code being provided on a carrier medium such as a disk, CD-or DVD-ROM, programmable memory such as read only memory (firmware), or a data carrier such as an optical or electronic signal carrier, for example. The apparatus and its modules of the present invention may be implemented by hardware circuits such as very large scale integrated circuits or gate arrays, semiconductors such as logic chips, transistors, or programmable hardware devices such as field programmable gate arrays, programmable logic devices, etc., or by software executed by various types of processors, or by a combination of hardware circuits and software, e.g., firmware.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a new forms of energy frequency modulation and inertia function test system which characterized in that, new forms of energy frequency modulation and inertia function test system includes:
a frequency sampling module comprising: a default value setting unit, a frequency variation sampling unit and a frequency variation rate sampling unit; setting the frequency variation and the parameters related to the frequency variation;
frequency modulation test module includes: the device comprises a voltage frequency default value setting unit, a frequency single step unit, a frequency continuous step unit, a frequency change rate determining unit and a frequency data playback unit; the device is used for carrying out frequency modulation experiments;
anti-interference test module of frequency modulation includes: the device comprises a default value adjusting unit, a high-low voltage ride through unit, a cascading failure testing unit, a harmonic unit and a waveform playback unit; the method is used for performing anti-interference test.
2. The system according to claim 1, wherein the default setting unit, the voltage frequency default setting unit, and the default adjusting unit are configured to set default voltage amplitude and default frequency values.
3. The new energy frequency modulation and inertia function testing system of claim 1, wherein the frequency sampling module comprises:
the frequency variation sampling unit is used for selecting frequency variation sampling as default voltage amplitude and frequency or current parameters set for continuous output; meanwhile, the method is used for determining that the state trigger condition is time trigger or key trigger;
and the frequency change rate sampling unit is used for adjusting the frequency change rate starting frequency and the frequency change rate ending frequency according to the set frequency change rate based on different change states.
4. The new energy frequency modulation and inertia function test system of claim 3, wherein the different variation states include: changing from 50Hz to a set cut-off frequency at a set frequency change rate, and continuously outputting the cut-off frequency after the frequency change time is exceeded;
and changing the cut-off frequency to 50Hz according to the set frequency change rate, and continuously outputting the 50Hz after the frequency change time is exceeded.
5. The system for testing frequency modulation and inertia functions of new energy according to claim 3, wherein the frequency change rate start frequency and the end frequency are 45Hz to 55 Hz;
the frequency change rate is set within the range of +/-0.05 Hz/s to +/-3 Hz/s.
6. The new energy frequency modulation and inertia function testing system of claim 1, wherein the frequency modulation testing module comprises:
frequency one-time step unit for setting U respectivelyA、UB、UCFrequency; the device is used for outputting at least two groups of point signals of the nodes or performing state conversion on the actions of the input nodes;
the frequency continuous step unit is used for setting different frequency outputs;
a frequency change rate determining unit for setting an adjustment start frequency and an adjustment end frequency;
and a frequency data playback unit for performing playback of the frequency data.
7. A new energy frequency modulation and inertia function test method applied to the new energy frequency modulation and inertia function test system according to any one of claims 1 to 6, wherein the new energy frequency modulation and inertia function test method comprises the following steps:
step one, setting frequency variation and frequency variation related parameters;
determining to perform a frequency modulation experiment through frequency single step, frequency continuous step and frequency change rate, and performing frequency data playback;
and step three, performing anti-interference test through high and low voltage ride through, cascading failure test and harmonic wave, and performing waveform playback.
8. The new energy frequency modulation and inertia function test method according to claim 7, wherein the third step specifically comprises:
carrying out simulation work according to a field test environment and steps by adopting digsilent PowerFactroy simulation software to obtain corresponding high/low voltage ride through, cascading failure ride through and harmonic wave test data, carrying out format conversion according to a power system fault recording data standard format to obtain a corresponding field test basic data source of the anti-interference capability of the frequency modulation field frequency modulation function, importing the basic data source into field test equipment and outputting a corresponding voltage signal for the frequency modulation function test, wherein the signal comprises corresponding high/low voltage ride through information, cascading failure information and harmonic wave information for the frequency modulation anti-interference capability test.
9. A program storage medium storing a computer program for causing an electronic device to perform the new energy tuning and inertia function testing method of claim 8, comprising the steps of:
step one, setting frequency variation and frequency variation related parameters;
determining to perform a frequency modulation experiment through frequency single step, frequency continuous step and frequency change rate, and performing frequency data playback;
and step three, performing anti-interference test through high and low voltage ride through, cascading failure test and harmonic wave, and performing waveform playback.
10. An information data processing terminal, comprising a memory and a processor, wherein the memory stores a computer program, and the computer program, when executed by the processor, causes the processor to execute the new energy frequency modulation and inertia function testing method of claim 8.
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