CN110445196B - Method for judging primary frequency modulation effect of generator set - Google Patents
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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
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Abstract
The invention discloses a method for judging the primary frequency modulation effect of a generator set, which comprises the following steps: acquiring PMU data and a frequency change curve chart of a generator set in a preset time period, and acquiring a theoretical difference adjustment coefficient according to the type of the generator set, wherein the PMU data comprises frequency data and power data; obtaining an actual difference adjustment coefficient according to the PMU data and the frequency change curve graph; and comparing the actual difference adjustment coefficient with the theoretical difference adjustment coefficient, and if the actual difference adjustment coefficient is larger than the theoretical difference adjustment coefficient, determining that the frequency modulation response of the generator set is unqualified. By adopting the method and the device, whether the primary frequency modulation effect of the generator set is qualified or not can be judged, and the reason why the generator set is unqualified can also be judged.
Description
Technical Field
The invention relates to the field of electric automation network source coordination, in particular to a method for judging primary frequency modulation effect of a generator set.
Background
The fundamental purpose of the operation of the power system is to supply power to users on the premise of ensuring that the quality of the power meets the standard. Frequency is an important criterion for measuring the quality of electric energy. Because the power grid is a huge inertia system, when the active power of the power grid is in shortage, the rotor of the generator accelerates, the frequency of the power grid rises, and otherwise, the frequency of the power grid decreases. Therefore, it is difficult to ensure that the grid frequency is always constant, and it is only necessary to control the grid frequency within a certain range.
The primary frequency modulation refers to an automatic control process that once the frequency of the power grid deviates from a rated value, a control system of a unit in the power grid automatically controls the increase and decrease of the active power of the unit, limits the change of the power grid frequency and enables the power grid frequency to be stable. When the frequency of the power grid is increased, the primary frequency modulation function requires the unit to utilize the heat storage of the unit to quickly reduce the load, and otherwise, the unit quickly increases the load. Through the process, the system reaches a new balance, and the change of the grid frequency is limited within a specified error range. If the active power of the unit continues to rise when the frequency of the power grid rises or the active power of the unit continues to fall when the frequency of the power grid falls in the actual operation, a reverse regulation phenomenon, called reverse regulation for short, occurs in the unit. Each unit has a theoretical difference adjustment coefficient, and the coefficient ensures that the unit has enough action amount to support the stability of the frequency of the power grid when the system frequency fluctuates, if the actual difference adjustment coefficient of the unit in an event is too large, the unit cannot make due contribution to the stability of the system frequency, and the phenomenon is that the action amount is insufficient. The insufficient back-blending action amount belongs to unqualified actions.
The primary frequency modulation function is one of means for dynamically ensuring the active power balance of the power grid. At present, a thermal power generating unit and a hydroelectric generating unit which mainly participate in primary frequency modulation of a power grid have the primary frequency modulation capability of the power grid due to partial wind power, photovoltaic and energy storage.
At present, a power grid company makes relevant regulations on primary frequency modulation management, and has achieved good effects on the aspect of overall frequency control of a power grid. However, for the unit, the primary frequency modulation itself can better evaluate whether the primary frequency modulation action of the unit meets the requirement only by analyzing the primary frequency modulation condition of the specific unit, thereby providing a reference for improving the primary frequency modulation capability of the unit and even improving the primary frequency modulation capability of the system.
In the prior art, only qualitative evaluation is performed on the primary frequency modulation condition of the unit, quantitative analysis is not performed, whether the response of each unit is qualified or not cannot be given for a specific accident, whether the response meets the stability requirement or not can only be judged from the overall frequency response of the system, the analysis on the primary frequency modulation capacity of a single unit cannot be realized, and the improvement on the primary frequency modulation capacity of a subsequent unit is not facilitated.
Disclosure of Invention
In order to solve the above problems, the present invention aims to provide a method for determining a primary frequency modulation effect of a generator set, which can determine whether the primary frequency modulation effect of the generator set is qualified or not, and also can determine the reason why the generator set is unqualified.
Based on this, the embodiment of the present invention provides a method for determining a primary frequency modulation effect of a generator set, where the method includes:
acquiring PMU data and a frequency change curve chart of a generator set in a preset time period, and acquiring a theoretical difference adjustment coefficient according to the type of the generator set, wherein the PMU data comprises frequency data and power data;
calculating an actual difference adjustment coefficient according to the PMU data and the frequency change curve graph;
and comparing the actual difference adjustment coefficient with the theoretical difference adjustment coefficient, and if the actual difference adjustment coefficient is larger than the theoretical difference adjustment coefficient, determining that the frequency modulation response of the generator set is unqualified.
Wherein, according to the PMU data and frequency variation curve diagram, calculating the actual difference adjustment coefficient comprises:
acquiring a starting time A and a frequency highest or lowest point corresponding time C after a frequency lowest or highest point B in a preset time period according to the frequency change curve graph;
the calculation formula of the actual difference adjustment coefficient is as follows:
wherein f isaAnd fcRespectively A, C point frequencies, PAAnd PCA, C points of power, PNRated power of the unit, fNThe system nominal frequency.
And if the difference value between the frequency corresponding to the starting time A in the preset time period and the highest or lowest point frequency after the lowest or highest point frequency exceeds the dead zone frequency of the generator set, and the actual difference adjustment coefficient is larger than zero and smaller than the theoretical difference adjustment coefficient, the primary frequency modulation response of the generator set is qualified.
And if the output of the generator set reaches the preset percentage of the maximum output, the primary frequency modulation response of the generator set is qualified.
If the difference value between the frequency corresponding to the starting time A in the preset time period and the highest or lowest point frequency after the lowest or highest point frequency exceeds the dead zone frequency of the generator set, and the actual difference adjustment coefficient is not greater than zero, the primary frequency modulation response of the generator set is unqualified, and the reason is reverse modulation.
If the difference value between the frequency corresponding to the starting time A in the preset time period and the highest or lowest point frequency after the lowest or highest point frequency does not exceed the dead zone frequency of the generator set, the difference value is greater than the preset percentage of the maximum power, and the actual difference adjustment coefficient is not greater than zero, the primary frequency modulation response of the generator set is unqualified, and the reason is reverse modulation.
If the output of the generator set does not reach the preset value of the maximum output and the difference value between the power corresponding to the starting time A and the highest or lowest power after the lowest or highest point in the preset time period is smaller than the preset percentage of the total output of the generator set, the response of the generator set to one-time frequency modulation is unqualified and the reason is that the action amount is insufficient.
The embodiment of the invention also provides a device for judging the primary frequency modulation effect of the generator set, which comprises:
the acquisition module is used for acquiring PMU data and a frequency change curve chart of the generator set in a preset time period and acquiring a theoretical difference adjustment coefficient according to the type of the generator set, wherein the PMU data comprises frequency data and power data;
the calculation module is used for calculating an actual difference adjustment coefficient according to the PMU data and the frequency change curve graph;
and the comparison module is used for comparing the actual difference adjustment coefficient with the theoretical difference adjustment coefficient, and if the actual difference adjustment coefficient is larger than the theoretical difference adjustment coefficient, the frequency modulation response of the generator set is unqualified.
The embodiment of the invention also provides frequency modulation effect judgment equipment, which comprises a processor, a memory and a computer program which is stored in the memory and configured to be executed by the processor, wherein the processor realizes the primary frequency modulation effect judgment method of the generator set when executing the computer program.
The embodiment of the invention also provides a computer-readable storage medium, which is characterized in that the computer-readable storage medium comprises a stored computer program, wherein when the computer program runs, the device where the computer-readable storage medium is located is controlled to execute the method for judging the primary frequency modulation effect of the generator set.
By adopting the method, PMU data and a frequency change curve chart of the generator set in a preset time period are collected, and a theoretical difference adjustment coefficient is obtained according to the type of the generator set, wherein the PMU data comprises frequency data and power data; calculating an actual difference adjustment coefficient according to the PMU data and the frequency change curve graph; and judging whether the response of the unit to primary frequency modulation is qualified or not by comparing the actual deviation adjustment coefficient with the theoretical deviation adjustment coefficient, whether the unit output reaches the preset value of the maximum output or not, comparing the difference value between the power corresponding to the starting time A and the highest or lowest point power after the lowest or highest point is passed with the preset percentage of the total output of the unit and the like, and if the unit primary frequency modulation is unqualified, acquiring the reason that the unit is unqualified, wherein the unqualified reason comprises countermodulation and insufficient action quantity.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for determining a primary frequency modulation effect of a generator set according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a primary frequency modulation device of a generator set according to an embodiment of the present invention;
fig. 3 is a flowchart for determining whether the primary frequency modulation effect of the generator set is qualified according to the embodiment of the present invention;
FIG. 4 is a graph of frequency variation provided by an embodiment of the present invention;
FIG. 5 is a diagram of an exemplary under-workload module provided by an embodiment of the present invention;
FIG. 6 is a diagram of an exemplary reverse tone unit provided by an embodiment of the present invention;
FIG. 7 is a graph of the frequency change for determining ABC point provided by an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Fig. 1 is a flowchart of a method for determining a primary frequency modulation effect of a generator set according to an embodiment of the present invention, where the method includes:
s101, collecting PMU data and a frequency change curve chart of a generator set in a preset time period, and obtaining a theoretical difference adjustment coefficient according to the type of the generator set, wherein the PMU data comprises frequency data and power data;
a generator set refers to a power generation device that can convert mechanical energy or other renewable energy into electrical energy. A common generator set is usually driven by a steam turbine, a water turbine or an internal combustion engine (gasoline engine, diesel engine, etc.).
Data of PMUs (power management units) of each unit in preset time are collected. The PMU data includes many data such as frequency, power, voltage, current, phase angle, etc.
The frequency change graph is a frequency change graph of the generator set in a preset time period.
The generator set types comprise a thermal power generator set, a hydroelectric power generator set and a nuclear power generator set, different generator set types have different theoretical difference adjustment coefficients, for example, the thermal power generator set is 5%, the hydroelectric power generator set is 4%, and the corresponding theoretical difference adjustment coefficients are obtained according to the generator set types.
S102, obtaining an actual difference adjustment coefficient according to the PMU data and the frequency change curve graph;
acquiring a starting time A and a frequency highest point or lowest point corresponding time C after a frequency lowest point or highest point B in a preset time period according to the frequency change curve graph, please refer to FIG. 7;
the calculation formula of the actual difference adjustment coefficient is as follows:
wherein f isaAnd fcRespectively A, C point frequencies, PAAnd PCA, C points of power, PNRated power of the unit, fNFor the system rated frequency, this value is 50 for the domestic grid.
S103, comparing the actual difference adjustment coefficient with the theoretical difference adjustment coefficient, and if the actual difference adjustment coefficient is larger than the theoretical difference adjustment coefficient, determining that the frequency modulation response of the generator set is unqualified.
In addition to comparing the actual difference adjustment coefficient with the theoretical difference adjustment coefficient to determine whether the primary frequency modulation response of the generator set is qualified, other determination methods may be adopted, please refer to fig. 3, where fig. 3 is a flowchart for determining whether the primary frequency modulation effect of the generator set is qualified according to the embodiment of the present invention.
In the first case:
and if the actual power of the generator set is greater than a first preset percentage of the maximum power, such as 90%, the primary frequency modulation response of the generator set is qualified.
In the second case:
if the actual power of the unit is not greater than the first preset percentage of the maximum power, further judgment is needed, if the frequency change of the unit, namely the difference value between the frequency corresponding to the starting time A in a preset time period and the highest or lowest point frequency after the lowest or highest point frequency exceeds the dead zone frequency of the unit, and the actual difference adjustment coefficient is greater than zero and smaller than the theoretical difference adjustment coefficient, the primary frequency modulation response of the unit is qualified.
In the third case:
if the actual power of the unit is not greater than a first preset percentage of the maximum power, further judgment is needed, if the frequency change of the unit, namely the difference value between the frequency corresponding to the starting time A in a preset time period and the highest or lowest point frequency after the lowest or highest point frequency exceeds the dead zone frequency of the unit, further judgment is needed, and if the actual difference adjustment coefficient of the unit is greater than 0 and the power change is less than or equal to a second preset percentage of the maximum power, namely 1%, the primary frequency modulation response of the unit is qualified.
Except for the three conditions, the primary frequency modulation response of the generator set is qualified, and the other conditions can judge that the primary frequency modulation response of the generator set is unqualified. And judging the reason why the primary frequency modulation response of the generator set is not qualified.
A. And if the actual power of the unit is not more than a first preset percentage of the maximum power, the frequency change does not exceed the dead zone frequency of the unit, and the actual difference adjustment coefficient of the unit is not more than 0 or the power change is more than a second preset percentage of the maximum power, the primary frequency modulation response of the unit is unqualified, and the unqualified reason is reverse modulation.
B. If the actual power of the generator set is not larger than a first preset percentage of the maximum power, the frequency variation exceeds the dead zone frequency of the generator set, and the condition that the actual difference adjustment coefficient is larger than 0 and smaller than the theoretical difference adjustment coefficient is not met, at this time, if the actual difference adjustment coefficient of the generator set is smaller than 0, the primary frequency modulation response of the generator set is unqualified, and the unqualified reason is reverse modulation.
C. If the actual power of the generator set is not larger than a first preset percentage of the maximum power, the frequency variation exceeds the dead zone frequency of the generator set, and the condition that the actual difference adjustment coefficient is larger than 0 and smaller than the theoretical difference adjustment coefficient is not met, at this time, if the actual difference adjustment coefficient of the generator set is larger than or equal to 0, the primary frequency modulation response of the generator set is unqualified, and the unqualified reason is that the action quantity is insufficient.
The following description of the above method is given as an example, and it can be seen from FIG. 4 that the frequency starts at 50.057Hz (point A, 11:03:17), decreases to 49.820Hz (point B, 11:03:23), and then returns to 49.873Hz (point C, 11:03: 27). The frequency fluctuation quantity exceeds the primary frequency modulation action dead zone of various units. Although the frequency continues to rise, the time is longer from the point a, and the frequency does not belong to the category of primary frequency modulation consideration.
And analyzing the data of each unit to obtain the qualified condition of the primary frequency modulation action of each unit under the event. One typical faulty unit action is as follows:
fig. 5 is a diagram of a typical under-actuated unit with a pre-accident force of about 530MW and a post-accident force of about 540MW, which is about 10MW higher and has an actuation amplitude of about 2.0%, according to an embodiment of the present invention. The frequency change is 0.2Hz, the change rate is 0.4 percent, so the difference adjustment coefficient is about 0.4 percent/2.0 percent to 20 percent, which does not meet the requirement of 10 percent of the theoretical difference adjustment coefficient of the unit.
Fig. 6 is a typical retuning unit provided in the embodiment of the present invention, and it can be seen from the figure that although the system frequency decreases during an event, the unit output also decreases, retuning occurs, and the unit primary frequency adjustment action is not qualified.
Whether the frequency variation of the generator set exceedsThe dead zone determination rules are interpreted as follows:
for indexes 2-4, the frequency variation was considered not to exceed the dead band because the maximum frequency point A was below the upper dead band limit of 50.05Hz, and for indexes 2-4, the maximum frequency point A was below the upper dead band limit of 50.05Hz, and the minimum frequency point C was above the lower dead band limit of 49.95 Hz.
For sequence numbers 5-7, the maximum frequency exceeded 50.05Hz, although the minimum frequency was still above 49.95Hz, and the frequency variation was considered to exceed the dead band.
In summary, a frequency change is considered to exceed the dead band whenever either the maximum or minimum frequency exceeds the dead band interval.
In this embodiment, PMU data and a frequency variation curve of a generator set in a preset time period are collected, and a theoretical difference adjustment coefficient is obtained according to the type of the generator set, where the PMU data includes frequency data and power data; calculating an actual difference adjustment coefficient according to the PMU data and the frequency change curve graph; and judging whether the response of the unit to primary frequency modulation is qualified or not by comparing the actual deviation adjustment coefficient with the theoretical deviation adjustment coefficient, whether the unit output reaches the preset value of the maximum output or not, comparing the difference value between the power corresponding to the starting time A and the highest or lowest point power after the lowest or highest point is passed with the preset percentage of the total output of the unit and the like, and if the unit primary frequency modulation is unqualified, acquiring the reason that the unit is unqualified, wherein the unqualified reason comprises countermodulation and insufficient action quantity.
Fig. 2 is a schematic diagram of a primary frequency modulation apparatus of a generator set, the apparatus including:
the acquisition module 201 is configured to acquire PMU data and a frequency variation curve of a generator set in a preset time period, and obtain a theoretical difference adjustment coefficient according to a type of the generator set, where the PMU data includes frequency data and power data;
a calculating module 202, configured to calculate an actual difference adjustment coefficient according to the PMU data and the frequency variation curve;
and the comparison module 203 is configured to compare the actual difference adjustment coefficient with the theoretical difference adjustment coefficient, and if the actual difference adjustment coefficient is greater than the theoretical difference adjustment coefficient, the frequency modulation response of the generator set is not qualified.
Technical features and technical effects of the primary frequency modulation effect judgment device for the generator set provided by the embodiment of the invention are the same as those of the method provided by the embodiment of the invention, and are not repeated herein.
The embodiment of the invention also provides frequency modulation effect judgment equipment, which comprises a processor, a memory and a computer program which is stored in the memory and configured to be executed by the processor, wherein the processor realizes the primary frequency modulation effect judgment method of the generator set when executing the computer program.
The embodiment of the invention also provides a computer-readable storage medium, which is characterized in that the computer-readable storage medium comprises a stored computer program, wherein when the computer program runs, the device where the computer-readable storage medium is located is controlled to execute the method for judging the primary frequency modulation effect of the generator set.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It is noted that, in this document, 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 phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. A method for judging primary frequency modulation effect of a generator set is characterized by comprising the following steps:
acquiring PMU data and a frequency change curve chart of a generator set in a preset time period, and acquiring a theoretical difference adjustment coefficient according to the type of the generator set, wherein the PMU data comprises frequency data and power data;
calculating an actual difference adjustment coefficient according to the PMU data and the frequency change curve graph;
comparing the actual difference adjustment coefficient with the theoretical difference adjustment coefficient, and if the actual difference adjustment coefficient is larger than the theoretical difference adjustment coefficient, determining that the frequency modulation response of the generator set is unqualified;
the method further comprises the following steps: and if the difference value between the frequency corresponding to the starting time A in the preset time period and the highest or lowest point frequency after the lowest or highest point frequency exceeds the dead zone frequency of the generator set, and the actual difference adjustment coefficient is larger than zero and smaller than the theoretical difference adjustment coefficient, the primary frequency modulation response of the generator set is qualified.
2. The method for determining primary frequency modulation effect of a generator set according to claim 1, wherein the calculating an actual difference modulation factor according to the PMU data and the frequency variation graph comprises:
acquiring a starting time A and a frequency highest or lowest point corresponding time C after a frequency lowest or highest point B in a preset time period according to the frequency change curve graph;
the calculation formula of the actual difference adjustment coefficient is as follows:
wherein f isaAnd fcRespectively A, C point frequencies, PAAnd PCA, C points of power, PNRated power of the unit, fNThe system nominal frequency.
3. The method for determining the primary frequency modulation effect of the generator set according to claim 1, wherein if the output of the generator set reaches a preset percentage of the maximum output, the primary frequency modulation response of the generator set is qualified.
4. The method for determining the primary frequency modulation effect of the generator set according to claim 1, wherein if the actual power of the generator set is not greater than a first preset percentage of the maximum power, and the difference between the frequency corresponding to the starting time a in the preset time period and the highest or lowest point frequency after the lowest or highest point frequency exceeds the dead zone frequency of the generator set, and the actual difference adjustment coefficient is not greater than zero, the primary frequency modulation response of the generator set is not qualified, and the reason is reverse adjustment.
5. The method for determining a primary frequency modulation effect of a generator set according to claim 1, wherein if the actual power of the generator set is not greater than a first preset percentage of the maximum power, and the difference between the frequency corresponding to the starting time a in the preset time period and the highest or lowest point frequency after the lowest or highest point frequency is exceeded does not exceed the dead zone frequency of the generator set, the difference is greater than the preset percentage of the maximum power, and the actual difference adjustment coefficient is not greater than zero, the primary frequency modulation response of the generator set is not qualified, and the reason is a reverse adjustment.
6. The method for determining the primary frequency modulation effect of the generator set according to claim 1, wherein if the actual power of the generator set is not greater than a first preset percentage of the maximum power, the frequency variation exceeds the dead zone frequency of the generator set, and the condition that the actual difference modulation coefficient is greater than 0 and smaller than the theoretical difference modulation coefficient is not satisfied, at this time, if the actual difference modulation coefficient of the generator set is greater than or equal to 0, the primary frequency modulation response of the generator set is not qualified, and the reason is that the action amount is insufficient.
7. The utility model provides a generating set primary frequency modulation effect judgement device which characterized in that includes:
the acquisition module is used for acquiring PMU data and a frequency change curve chart of the generator set in a preset time period and acquiring a theoretical difference adjustment coefficient according to the type of the generator set, wherein the PMU data comprises frequency data and power data;
the calculation module is used for calculating an actual difference adjustment coefficient according to the PMU data and the frequency change curve graph;
the comparison module is used for comparing the actual difference adjustment coefficient with the theoretical difference adjustment coefficient, and if the actual difference adjustment coefficient is larger than the theoretical difference adjustment coefficient, the frequency modulation response of the generator set is unqualified; and if the difference value between the frequency corresponding to the starting time A in the preset time period and the highest or lowest point frequency after the lowest or highest point frequency exceeds the dead zone frequency of the generator set, and the actual difference adjustment coefficient is larger than zero and smaller than the theoretical difference adjustment coefficient, the primary frequency modulation response of the generator set is qualified.
8. A frequency modulation effect determination apparatus comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the generator set primary frequency modulation effect determination method according to any one of claims 1 to 6 when executing the computer program.
9. A computer-readable storage medium, comprising a stored computer program, wherein when the computer program runs, the computer-readable storage medium controls a device to execute the method for determining primary frequency modulation effect of a generator set according to any one of claims 1 to 6.
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