CN117728512A - Wind farm inertia response energy management platform and control method - Google Patents
Wind farm inertia response energy management platform and control method Download PDFInfo
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- CN117728512A CN117728512A CN202311550524.3A CN202311550524A CN117728512A CN 117728512 A CN117728512 A CN 117728512A CN 202311550524 A CN202311550524 A CN 202311550524A CN 117728512 A CN117728512 A CN 117728512A
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- 238000010248 power generation Methods 0.000 abstract description 6
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Abstract
The invention relates to the technical field of wind power generation, in particular to a wind farm inertia response energy management platform and a control method. According to the inertia response adjustment method, input parameters are calculated based on an inertia response algorithm in response to an inertia trigger signal, and inertia response adjustment quantity is obtained; and then dynamically adjusting the inertia adjustable unit according to the inertia response adjustment quantity. Therefore, after the inertia trigger signal is received, the inertia response algorithm is based on the dynamic adjustment of the inertia adjustable unit, the inertia response time is short, and the wind power plant inertia response time requirement is met, so that the wind power plant inertia response capacity can be controlled and managed within the wind power plant inertia response time, and the stability of a power grid is improved.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a wind farm inertia response energy management platform and a control method.
Background
With the continuous development of renewable energy sources, wind farms have become an important power supply mode, however, due to the instability of wind energy, the power output of wind farms also has volatility, which affects the stability of the power grid. As the power generation duty ratio of new energy is higher, the influence of the stability of the power grid is larger, and how to solve the problem becomes an important challenge in the current wind power generation field.
An important means for solving the influence of the stability of the power grid is inertia response, wherein when the frequency of the power grid changes, the wind power plant responds to the requirement of the power grid by adjusting the output power of the inertia response, and the means are not commonly applied to the actual wind power generation process at present. In a wind power generation site, the generating functions of each wind power generator set are different, and in the prior art, although the generating power process of the wind power plant can be controlled, the response time index requirement of a power grid on the inertia response of the wind power plant is strict, and the conventional control on the generating power process of the wind power plant is difficult to meet the time requirement of the inertia response of the wind power plant. Therefore, a management platform and a control method specifically aiming at wind power inertia response are needed to control and manage wind power inertia response capability within the wind power plant inertia response time.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a wind power plant inertia response energy management platform and a control method, which can control and manage wind power inertia response capability within the wind power plant inertia response time, and improve the stability of a power grid.
In a first aspect, the invention provides a wind farm inertia response energy management platform control method.
In a first implementation manner, a wind farm inertia response energy management platform control method includes:
responding to the inertia trigger signal, and calculating input parameters based on an inertia response algorithm to obtain an inertia response adjustment quantity; the input parameters comprise inertia response target values and wind field active summation;
and dynamically adjusting the inertia adjustable unit according to the inertia response adjustment quantity.
With reference to the first implementation manner, in a second implementation manner, calculating the input parameter based on the inertia response algorithm, the obtaining the inertia response adjustment amount includes:
acquiring the total inertia response adjustment amount according to the inertia response target value and the wind field active sum;
and acquiring the inertia response adjustment quantity of each inertia adjustable unit according to the total inertia response adjustment quantity and the number of inertia adjustable units.
With reference to the first implementation manner, in a third implementation manner, dynamically adjusting the inertia adjustable unit according to the inertia response adjustment amount includes:
comparing the inertia response adjustment quantity of the current inertia adjustable unit with a first preset threshold value to obtain a first comparison result;
obtaining a plurality of preset power corresponding to the current inertia adjustable unit according to a first comparison result;
comparing the preset power to obtain a second comparison result;
determining the adjustable power corresponding to the current inertia adjustable unit according to the second comparison result;
the current inertia adjustable unit is adjusted to adjustable power.
With reference to the third implementation manner, in a fourth implementation manner, obtaining, according to the first comparison result, a plurality of preset powers corresponding to the current inertia adjustable unit includes:
under the condition that the inertia response adjustment quantity is larger than or equal to a preset threshold value, determining the rated power of the unit as a first preset adjustment power; adding the inertia response adjustment quantity and the unit actual power, and determining the obtained sum as a second preset adjustment power;
multiplying the rated power of the unit by a preset percentage under the condition that the inertia response adjustment quantity is smaller than a preset threshold value, and determining the product as a third preset adjustment power; and subtracting the real power of the unit from the inertia response adjustment amount, and determining the obtained difference as fourth pre-adjustment power.
In combination with the fourth implementation manner, in a fifth implementation manner, comparing the plurality of pre-adjusted powers includes:
comparing the first pre-regulated power with the second pre-regulated power; or, comparing the third pre-regulated power with the fourth pre-regulated power.
With reference to the fifth implementation manner, in a sixth implementation manner, determining, according to the second comparison result, adjustable power corresponding to the current inertia adjustable unit includes:
subtracting the rated power of the unit from the actual power of the unit under the condition that the second preset power is larger than the first preset power, and determining the obtained difference as adjustable power;
the second pre-regulated power is determined to be an adjustable power if the second pre-regulated power is less than or equal to the first pre-regulated power.
With reference to the sixth implementation manner, in a seventh implementation manner, the method further includes:
subtracting the adjustable power corresponding to the current inertia adjustable unit from the inertia response adjustment amount under the condition that the second preset adjustment power is larger than the first preset adjustment power, so as to obtain a residual inertia response adjustment amount;
determining a remaining inertia adjustable unit with the second pre-adjustment power being less than or equal to the first pre-adjustment power;
and (5) evenly distributing the residual inertia response adjustment quantity to the residual inertia adjustable unit.
With reference to the fifth implementation manner, in an eighth implementation manner, determining, according to the second comparison result, adjustable power corresponding to the current inertia adjustable unit includes:
subtracting the unit actual power from the third pre-regulated power if the third pre-regulated power is greater than the fourth pre-regulated power, the resulting difference being determined as an adjustable power;
and determining the fourth pre-regulated power as an adjustable power if the third pre-regulated power is less than or equal to the fourth pre-regulated power.
With reference to the eighth implementation manner, in a ninth implementation manner, the method further includes:
subtracting the adjustable power corresponding to the current inertia adjustable unit from the inertia response adjustment amount under the condition that the third preset adjustment power is larger than the fourth preset adjustment power, so as to obtain a residual inertia response adjustment amount;
determining a residual inertia adjustable unit with the third preset power smaller than the fourth preset power;
and (5) evenly distributing the residual inertia response adjustment quantity to the residual inertia adjustable unit.
In a second aspect, the invention provides a wind farm inertia responsive energy management platform.
In a tenth implementation manner, a wind farm inertia response energy management platform is characterized by comprising:
triggering a primary frequency modulation signal according to an inertia response regulation and control period;
triggering an inertia trigger signal under the condition of receiving the primary frequency modulation signal;
under the condition that an inertia trigger signal is received, executing the control method of the wind farm inertia response energy management platform.
According to the technical scheme, the beneficial technical effects of the invention are as follows:
responding to the inertia trigger signal, and calculating input parameters based on an inertia response algorithm to obtain an inertia response adjustment quantity; and then dynamically adjusting the inertia adjustable unit according to the inertia response adjustment quantity. Therefore, after the inertia trigger signal is received, the inertia response algorithm is based on the dynamic adjustment of the inertia adjustable unit, the inertia response time is short, and the wind power plant inertia response time requirement is met, so that the wind power plant inertia response capacity can be controlled and managed within the wind power plant inertia response time, and the stability of a power grid is improved.
Drawings
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. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of a wind farm inertia response energy management platform control method according to the present embodiment;
fig. 2 is a flowchart of a control method of a wind farm inertia response energy management platform according to the present embodiment.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to implement the embodiments of the disclosure described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. The term "plurality" means two or more, unless otherwise indicated. In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B. The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B. The term "corresponding" may refer to an association or binding relationship, and the correspondence between a and B refers to an association or binding relationship between a and B.
Referring to fig. 1, the embodiment provides a wind farm inertia response energy management platform control method, which includes:
step S01, responding to an inertia trigger signal, and calculating input parameters based on an inertia response algorithm to obtain an inertia response adjustment quantity; the input parameters comprise inertia response target values and wind field active summation;
and S02, dynamically adjusting the inertia adjustable unit according to the inertia response adjustment quantity.
Optionally, the input parameters include an inertia trigger signal, and the inertia response target value and the wind field active sum are calculated by using an inertia response algorithm under the condition that the inertia trigger signal is received.
In some embodiments, when the wind farm inertia response energy management platform is controlled, after receiving the inertia response signals, judging whether each grid-connected wind turbine is an inertia adjustable turbine, immediately dividing the full-farm grid-connected turbine into an inertia adjustable turbine and an inertia non-adjustable turbine according to judging conditions by a program, counting the numbers of the two turbines respectively, and then performing the next response inertia triggering signals. And when the inertia response signal is not received, the next step is not executed, and the judgment of the step is continuously executed.
Optionally, calculating the input parameter based on the inertia response algorithm, the obtaining the inertia response adjustment amount includes: acquiring the total inertia response adjustment amount according to the inertia response target value and the wind field active sum; and acquiring the inertia response adjustment quantity of each inertia adjustable unit according to the total inertia response adjustment quantity and the number of inertia adjustable units.
Optionally, obtaining the inertia response adjustment amount total according to the inertia response target value and the wind field active sum includes: and subtracting the wind field active sum from the inertia response target value to obtain a sum which is the total inertia response adjustment quantity.
Alternatively, the calculation formula of the inertia response adjustment amount total amount is as follows:
ΔP＝P IneriaDst -P t
in the above formula, ΔP is the total inertia response adjustment amount, P IneriaDst For the inertia response target value, P t Is the sum of wind field active power.
Optionally, obtaining the inertia response adjustment amount of each inertia adjustable unit according to the total inertia response adjustment amount and the number of inertia adjustable units includes: and counting the number of the inertia adjustable units, dividing the total inertia response adjustment quantity by the number of the inertia adjustable units, and obtaining the quotient as the inertia response adjustment quantity of each inertia adjustable unit.
Optionally, the inertia response adjustment amount calculation formula of the inertia adjustable unit is as follows:
in the above formula, N IneriaAlter The number of the inertia adjustable units is Δpi, the inertia response adjustment amount of the inertia adjustable units is Δp, and the total inertia response adjustment amount is Δp.
Optionally, dynamically adjusting the inertia adjustable unit according to the inertia response adjustment amount includes: comparing the inertia response adjustment quantity of the current inertia adjustable unit with a first preset threshold value to obtain a first comparison result; obtaining a plurality of preset power corresponding to the current inertia adjustable unit according to a first comparison result; comparing the preset power to obtain a second comparison result; determining the adjustable power corresponding to the current inertia adjustable unit according to the second comparison result; the current inertia adjustable unit is adjusted to adjustable power.
Optionally, the first comparison result is that the inertia response adjustment amount is greater than or equal to a preset threshold value, or the inertia response adjustment amount is less than the preset threshold value.
Optionally, the preset threshold is 0. And comparing the inertia response adjustment quantity of the current inertia adjustable unit with 0 to obtain a first comparison result, wherein the inertia response adjustment quantity is larger than or equal to 0 or smaller than 0.
Optionally, obtaining a plurality of preset powers corresponding to the current inertia adjustable unit according to the first comparison result includes: under the condition that the inertia response adjustment quantity is larger than or equal to a preset threshold value, determining the rated power of the unit as a first preset adjustment power; adding the inertia response adjustment quantity and the unit actual power, and determining the obtained sum as a second preset adjustment power; multiplying the rated power of the unit by a preset percentage under the condition that the inertia response adjustment quantity is smaller than a preset threshold value, and determining the product as a third preset adjustment power; and subtracting the real power of the unit from the inertia response adjustment amount, and determining the obtained difference as fourth pre-adjustment power.
Optionally, comparing the plurality of pre-adjusted powers includes: comparing the first pre-regulated power with the second pre-regulated power; or, comparing the third pre-regulated power with the fourth pre-regulated power.
Optionally, in the case that the inertia response adjustment amount is greater than or equal to the preset threshold, the second comparison result is that the second pre-adjustment power is greater than the first pre-adjustment power, or the second pre-adjustment power is less than or equal to the first pre-adjustment power. And under the condition that the inertia response adjustment quantity is smaller than the preset threshold value, the second comparison result is that the third pre-adjustment power is larger than the fourth pre-adjustment power, or the third pre-adjustment power is smaller than or equal to the fourth pre-adjustment power.
Optionally, determining the adjustable power corresponding to the current inertia adjustable unit according to the second comparison result includes: subtracting the rated power of the unit from the actual power of the unit under the condition that the second preset power is larger than the first preset power, and determining the obtained difference as adjustable power; the second pre-regulated power is determined to be an adjustable power if the second pre-regulated power is less than or equal to the first pre-regulated power.
Optionally, the method further comprises: subtracting the adjustable power corresponding to the current inertia adjustable unit from the inertia response adjustment amount under the condition that the second preset adjustment power is larger than the first preset adjustment power, so as to obtain a residual inertia response adjustment amount; determining a remaining inertia adjustable unit with the second pre-adjustment power being less than or equal to the first pre-adjustment power; and (5) evenly distributing the residual inertia response adjustment quantity to the residual inertia adjustable unit.
Optionally, determining the adjustable power corresponding to the current inertia adjustable unit according to the second comparison result includes: subtracting the unit actual power from the third pre-regulated power if the third pre-regulated power is greater than the fourth pre-regulated power, the resulting difference being determined as an adjustable power; and determining the fourth pre-regulated power as an adjustable power if the third pre-regulated power is less than or equal to the fourth pre-regulated power.
Optionally, the method further comprises: subtracting the adjustable power corresponding to the current inertia adjustable unit from the inertia response adjustment amount under the condition that the third preset adjustment power is larger than the fourth preset adjustment power, so as to obtain a residual inertia response adjustment amount; determining a residual inertia adjustable unit with the third preset power smaller than the fourth preset power; and (5) evenly distributing the residual inertia response adjustment quantity to the residual inertia adjustable unit.
In some embodiments, in conjunction with the illustration of fig. 2, a flow of a wind farm inertia responsive energy management platform control method is as follows:
s11, inputting parameters;
step S12, calculating input parameters based on an inertia response algorithm to obtain inertia response adjustment quantity;
step S13, judging whether the inertia response adjustment amount is larger than 0, if yes, executing step S14, and if not, executing step S18;
s14, determining the rated power of the unit as a first preset power; adding the inertia response adjustment quantity and the unit actual power, and determining the obtained sum as a second preset adjustment power;
step S15, judging whether the second pre-adjustment power is larger than the first pre-adjustment power, if yes, executing step S16, and if not, executing step S17;
step S16, subtracting the rated power of the unit from the actual power of the unit, determining the obtained difference as adjustable power, and then executing step S22;
step S17, determining the second pre-adjustment power as an adjustable power, and then executing step S22;
step S18, multiplying the rated power of the unit by a preset percentage, and determining the product as a third preset power; subtracting the real power of the unit from the inertia response adjustment amount, and determining the obtained difference as fourth pre-adjustment power;
step S19, judging whether the third pre-regulated power is larger than the fourth pre-regulated power, if yes, executing step S20, and if not, executing step S21;
step S20, subtracting the unit actual power from the third preset power, determining the obtained difference as adjustable power, and then executing step S22;
step S21, determining the fourth pre-adjustment power as adjustable power, and then executing step S22;
and S22, adjusting the current inertia adjustable unit into adjustable power.
In some embodiments, a wind farm inertia responsive energy management platform, comprising: triggering a primary frequency modulation signal according to an inertia response regulation and control period; triggering an inertia trigger signal under the condition of receiving the primary frequency modulation signal; under the condition that an inertia trigger signal is received, executing the control method of the wind farm inertia response energy management platform.
Optionally, the input parameters further include a primary frequency modulation signal and an inertia response regulation period, the primary frequency modulation signal is triggered every interval of one period according to the inertia response regulation period, the primary inertia trigger signal is triggered by the frequency modulation signal every time, and the wind farm inertia response energy management platform executes the wind farm inertia response energy management platform control method after receiving the inertia trigger signal.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (10)
1. The wind farm inertia response energy management platform control method is characterized by comprising the following steps:
responding to the inertia trigger signal, and calculating input parameters based on an inertia response algorithm to obtain an inertia response adjustment quantity; the input parameters comprise inertia response target values and wind field active summation;
and dynamically adjusting the inertia adjustable unit according to the inertia response adjustment quantity.
2. The method of claim 1, wherein calculating the input parameters based on an inertia response algorithm, the obtaining an inertia response adjustment amount comprises:
acquiring the total inertia response adjustment amount according to the inertia response target value and the wind field active sum;
and acquiring the inertia response adjustment quantity of each inertia adjustable unit according to the total inertia response adjustment quantity and the number of inertia adjustable units.
3. The method of claim 1, wherein dynamically adjusting the inertia tunable assembly based on the inertia response adjustment comprises:
comparing the inertia response adjustment quantity of the current inertia adjustable unit with a first preset threshold value to obtain a first comparison result;
obtaining a plurality of preset power corresponding to the current inertia adjustable unit according to a first comparison result;
comparing the preset power to obtain a second comparison result;
determining the adjustable power corresponding to the current inertia adjustable unit according to the second comparison result;
the current inertia adjustable unit is adjusted to adjustable power.
4. A method according to claim 3, wherein obtaining a plurality of pre-adjusted powers corresponding to the current inertia adjustable group according to the first comparison result comprises:
under the condition that the inertia response adjustment quantity is larger than or equal to a preset threshold value, determining the rated power of the unit as a first preset adjustment power; adding the inertia response adjustment quantity and the unit actual power, and determining the obtained sum as a second preset adjustment power;
multiplying the rated power of the unit by a preset percentage under the condition that the inertia response adjustment quantity is smaller than a preset threshold value, and determining the product as a third preset adjustment power; and subtracting the real power of the unit from the inertia response adjustment amount, and determining the obtained difference as fourth pre-adjustment power.
5. The method of claim 4, wherein comparing the plurality of pre-adjusted powers comprises:
comparing the first pre-regulated power with the second pre-regulated power; or, comparing the third pre-regulated power with the fourth pre-regulated power.
6. The method of claim 5, wherein determining the corresponding adjustable power for the current set of inertia adjustments based on the second comparison result comprises:
subtracting the rated power of the unit from the actual power of the unit under the condition that the second preset power is larger than the first preset power, and determining the obtained difference as adjustable power;
the second pre-regulated power is determined to be an adjustable power if the second pre-regulated power is less than or equal to the first pre-regulated power.
7. The method as recited in claim 6, further comprising:
subtracting the adjustable power corresponding to the current inertia adjustable unit from the inertia response adjustment amount under the condition that the second preset adjustment power is larger than the first preset adjustment power, so as to obtain a residual inertia response adjustment amount;
determining a remaining inertia adjustable unit with the second pre-adjustment power being less than or equal to the first pre-adjustment power;
and (5) evenly distributing the residual inertia response adjustment quantity to the residual inertia adjustable unit.
8. The method of claim 5, wherein determining the corresponding adjustable power for the current set of inertia adjustments based on the second comparison result comprises:
subtracting the unit actual power from the third pre-regulated power if the third pre-regulated power is greater than the fourth pre-regulated power, the resulting difference being determined as an adjustable power;
and determining the fourth pre-regulated power as an adjustable power if the third pre-regulated power is less than or equal to the fourth pre-regulated power.
9. The method as recited in claim 8, further comprising:
subtracting the adjustable power corresponding to the current inertia adjustable unit from the inertia response adjustment amount under the condition that the third preset adjustment power is larger than the fourth preset adjustment power, so as to obtain a residual inertia response adjustment amount;
determining a residual inertia adjustable unit with the third preset power smaller than the fourth preset power;
and (5) evenly distributing the residual inertia response adjustment quantity to the residual inertia adjustable unit.
10. A wind farm inertia responsive energy management platform, comprising:
triggering a primary frequency modulation signal according to an inertia response regulation and control period;
triggering an inertia trigger signal under the condition of receiving the primary frequency modulation signal;
a wind farm inertia responsive energy management platform control method according to any of claims 1 to 9, being executed upon receipt of an inertia trigger signal.
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| CN202311550524.3A CN117728512A (en) | 2023-11-20 | 2023-11-20 | Wind farm inertia response energy management platform and control method |
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| CN202311550524.3A CN117728512A (en) | 2023-11-20 | 2023-11-20 | Wind farm inertia response energy management platform and control method |
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