CN116345569A - Frequency modulation performance index optimization method and device of hydroelectric generating set and electronic equipment - Google Patents

Frequency modulation performance index optimization method and device of hydroelectric generating set and electronic equipment Download PDF

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Publication number
CN116345569A
CN116345569A CN202310328686.6A CN202310328686A CN116345569A CN 116345569 A CN116345569 A CN 116345569A CN 202310328686 A CN202310328686 A CN 202310328686A CN 116345569 A CN116345569 A CN 116345569A
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generating set
index
hydroelectric generating
frequency modulation
load distribution
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Inventor
章海春
郑雪筠
李海峰
梁朝弼
罗蓓
王殿君
王宏兵
吴兴鑫
魏忠巍
杨波
王芝芳
杨绍良
丁伟
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Huaneng Lancang River Hydropower Co Ltd
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Huaneng Lancang River Hydropower Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]

Abstract

The disclosure provides a frequency modulation performance index optimization method, a frequency modulation performance index optimization device, electronic equipment and a storage medium of a hydroelectric generating set, wherein the method comprises the following steps: the method comprises the steps of obtaining an initial adjustment rate index, a response time index and an adjustment precision index of a hydroelectric generating set, obtaining reference power information of the hydroelectric generating set, wherein the reference power information describes the generating power of the hydroelectric generating set related to a frequency modulation performance index of the hydroelectric generating set, processing the initial adjustment rate index according to the reference power information and the generating set number information of the hydroelectric generating set to obtain a target adjustment rate index, and determining the target frequency modulation performance index of the hydroelectric generating set according to the target adjustment rate index, the response time index and the adjustment precision index. Through the method and the device, the small load distribution threshold value in the running process of the hydroelectric generating set can be dynamically adjusted, so that the hydroelectric generating set can be better adapted to the running in different power running modes, the frequency modulation performance of the hydroelectric generating set can be effectively improved, and the stable running of a power grid can be maintained.

Description

Frequency modulation performance index optimization method and device of hydroelectric generating set and electronic equipment
Technical Field
The disclosure relates to the technical field of frequency modulation of hydroelectric generating sets, in particular to a frequency modulation performance index optimization method, a frequency modulation performance index optimization device, electronic equipment and a storage medium of a hydroelectric generating set.
Background
Currently, factors influencing the frequency modulation performance index of the hydroelectric generating set are mainly small load distribution conditions in automatic power generation control of the hydroelectric generating set.
In the related art, a fixed load threshold value is usually set, when the deviation between a scheduling given value and a real value is within the load threshold value range, a small load distribution principle is executed, the deviation is distributed to a hydro-electric unit with the smallest load in operation, and if the deviation between the scheduling given value and the real value is greater than the load threshold value, a uniform distribution principle is executed and distributed to a plurality of hydro-electric units in grid-connected operation.
Under the mode, the fixed hydropower distribution threshold cannot adapt to different running modes of the hydropower unit such as a large mode, a small mode and the like, so that the frequency modulation performance index of the hydropower unit is influenced, the execution efficiency and the execution accuracy of the frequency modulation instruction of the hydropower unit are influenced, and the frequency modulation performance of the hydropower unit and the running stability of a power grid are influenced.
Disclosure of Invention
The present disclosure aims to solve, at least to some extent, one of the technical problems in the related art.
Therefore, an object of the present disclosure is to provide a method, an apparatus, an electronic device, a storage medium, and a computer program product for optimizing a frequency modulation performance index of a hydroelectric generating set, which can dynamically adjust a small load distribution threshold value in operation of the hydroelectric generating set, so that the hydroelectric generating set can better adapt to operation in different power operation modes, thereby effectively improving the frequency modulation performance of the hydroelectric generating set, and being beneficial to maintaining stable operation of a power grid.
An embodiment of a first aspect of the present disclosure provides a method for optimizing a frequency modulation performance index of a hydroelectric generating set, including: acquiring an initial adjustment rate index, a response time index and an adjustment precision index of the hydroelectric generating set; acquiring reference power information of the hydroelectric generating set, wherein the reference power information describes the generating power of the hydroelectric generating set related to the frequency modulation performance index of the hydroelectric generating set; processing the initial regulation rate index according to the reference power information and the unit number information of the hydroelectric units to obtain a target regulation rate index; and determining the target frequency modulation performance index of the hydroelectric generating set according to the target adjustment rate index, the response time index and the adjustment accuracy index.
According to the frequency modulation performance index optimization method of the hydroelectric generating set, the initial adjustment rate index, the response time index and the adjustment accuracy index of the hydroelectric generating set are obtained, the reference power information of the hydroelectric generating set is obtained, the generating power of the hydroelectric generating set related to the frequency modulation performance index of the hydroelectric generating set is described by the reference power information, the initial adjustment rate index is processed according to the reference power information and the generating set number information of the hydroelectric generating set, the target adjustment rate index is obtained, the target frequency modulation performance index of the hydroelectric generating set is determined according to the target adjustment rate index, the response time index and the adjustment accuracy index, the small load distribution threshold value in the operation of the hydroelectric generating set can be dynamically adjusted, the hydroelectric generating set can be better adapted to the operation in different power operation modes, and therefore the frequency modulation performance of the hydroelectric generating set can be effectively improved, and the stable operation of a power grid can be maintained.
An embodiment of a second aspect of the present disclosure provides a frequency modulation performance index optimization device of a hydroelectric generating set, including: the first acquisition module is used for acquiring an initial adjustment rate index, a response time index and an adjustment precision index of the hydroelectric generating set; the second acquisition module is used for acquiring reference power information of the hydroelectric generating set, wherein the reference power information describes the generating power of the hydroelectric generating set related to the frequency modulation performance index of the hydroelectric generating set; the processing module is used for processing the initial adjustment rate index according to the reference power information and the unit number information of the hydroelectric units to obtain a target adjustment rate index; and the determining module is used for determining the target frequency modulation performance index of the hydroelectric generating set according to the target adjustment rate index, the response time index and the adjustment precision index.
According to the frequency modulation performance index optimizing device of the hydroelectric generating set, the reference power information of the hydroelectric generating set is obtained through obtaining the initial adjustment rate index, the response time index and the adjustment accuracy index of the hydroelectric generating set, wherein the reference power information describes the generating power of the hydroelectric generating set related to the frequency modulation performance index of the hydroelectric generating set, the initial adjustment rate index is processed according to the reference power information and the unit number information of the hydroelectric generating set to obtain the target adjustment rate index, the target adjustment rate index is determined according to the target adjustment rate index, the response time index and the adjustment accuracy index, the target frequency modulation performance index of the hydroelectric generating set is determined, the small load distribution threshold value in the operation of the hydroelectric generating set can be dynamically adjusted, the hydroelectric generating set can be better adapted to the operation in different power operation modes, and therefore the frequency modulation performance of the hydroelectric generating set can be effectively improved, and the stable operation of a power grid can be maintained.
An embodiment of a third aspect of the present disclosure provides an electronic device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor executes the program to implement a method for optimizing a frequency modulation performance index of a hydroelectric generating set according to an embodiment of the first aspect of the present disclosure.
An embodiment of a fourth aspect of the present disclosure proposes a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method for optimizing a frequency modulation performance index of a hydroelectric generating set as proposed by an embodiment of the first aspect of the present disclosure.
An embodiment of a fifth aspect of the present disclosure proposes a computer program product which, when executed by a processor, performs a method for optimizing a frequency modulation performance index of a hydroelectric generating set as proposed by the embodiment of the first aspect of the present disclosure.
Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.
Drawings
The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic flow chart of a method for optimizing frequency modulation performance index of a hydroelectric generating set according to an embodiment of the disclosure;
FIG. 2 is a schematic flow chart of a method for optimizing the frequency modulation performance index of a hydroelectric generating set according to an embodiment of the disclosure;
FIG. 3 is a schematic flow chart of a method for optimizing the frequency modulation performance index of a hydroelectric generating set according to another embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a frequency modulation performance index optimizing apparatus of a hydroelectric generating set according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of a frequency modulation performance index optimizing apparatus for a hydroelectric generating set according to another embodiment of the present disclosure;
fig. 6 illustrates a block diagram of an exemplary electronic device suitable for use in implementing embodiments of the present disclosure.
Detailed Description
Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present disclosure and are not to be construed as limiting the present disclosure. On the contrary, the embodiments of the disclosure include all alternatives, modifications, and equivalents as may be included within the spirit and scope of the appended claims.
Fig. 1 is a flow chart of a method for optimizing a frequency modulation performance index of a hydroelectric generating set according to an embodiment of the disclosure.
It should be noted that, the implementation main body of the frequency modulation performance index optimization method of the hydroelectric generating set in this embodiment is a frequency modulation performance index optimization device of the hydroelectric generating set, the device may be implemented in a software and/or hardware manner, and the device may be configured in an electronic device, which is not limited.
As shown in fig. 1, the frequency modulation performance index optimization method of the hydroelectric generating set comprises the following steps:
s101: and acquiring an initial adjustment rate index, a response time index and an adjustment precision index of the hydroelectric generating set.
The initial regulation rate index refers to the rate of the unit responding to the control instruction of the automatic power generation control (Automatic Generation Control, AGC), and the initial regulation rate index refers to the regulation rate index before the unit is optimally regulated and lifted.
The response time index refers to a time delay for responding to an automatic power generation control command.
The adjustment accuracy index refers to the accuracy of the unit responding to the automatic power generation control instruction.
In the implementation of the method, the frequency modulation index calculation rule of the AGC power generation unit in the south area can be used for determining three indexes related to the frequency modulation performance index of the hydropower plant as the adjustment rate index, the response time index and the adjustment precision index, the adjustment rate index before the optimization adjustment of the frequency modulation performance index of the hydropower plant can be obtained as the initial adjustment rate index, and the response time index and the adjustment precision index of the hydropower plant are obtained.
S102: and obtaining reference power information of the hydroelectric generating set, wherein the reference power information describes the generating power of the hydroelectric generating set related to the frequency modulation performance index of the hydroelectric generating set.
The reference power information refers to the generating power information of the hydroelectric generating set, which can be used for describing the frequency modulation performance index of the hydroelectric generating set.
In the implementation of the disclosure, when the reference power information of the hydroelectric generating set is obtained, the generating power information of the hydroelectric generating set related to the adjustment rate index can be deduced according to the calculation expression related to the adjustment rate index, and the adjustment rate index is related to the actual measurement rate of the generating unit of the hydroelectric generating set and the average standard adjustment rate of the AGC generating unit in the frequency modulation resource distribution area, so that the related data information such as the actual measurement rate of the generating unit and the average standard adjustment rate of the AGC generating unit in the frequency modulation resource distribution area can be used as the reference power information of the hydroelectric generating set.
S103: and processing the initial regulation rate index according to the reference power information and the unit number information of the hydroelectric units to obtain a target regulation rate index.
The unit number information of the hydroelectric units refers to the number of the hydroelectric units which are started and run in the hydropower plant.
Wherein the target adjustment rate index is an adjustment rate index obtained after the initial adjustment rate index is optimized according to the reference power information and the unit number information of the hydroelectric generating set, and the target adjustment rate index can effectively optimize the frequency modulation performance of the hydroelectric generating set when participating in determining the frequency modulation performance index of the hydroelectric generating set
After the initial adjustment rate index of the hydroelectric generating set is obtained and the reference power information of the hydroelectric generating set is obtained, the embodiment of the disclosure can process the initial adjustment rate index according to the reference power information and the set number information of the hydroelectric generating set to obtain the target adjustment rate index.
In the embodiment of the disclosure, when the initial adjustment rate index is processed according to the reference power information and the unit number information of the hydroelectric units, the reference power information can be referred toThe actual measurement rate of the generating unit in the hydroelectric generating set and the average standard regulation rate of the AGC generating unit in the frequency modulation resource distribution area determine the mode of optimizing the regulation rate index of the hydroelectric generating set, and regulate the rate index k 1 The relationship between the measured rate and the average standard regulation rate of the power generation unit can be represented by the expression
Figure BDA0004154239590000051
Representation, wherein S kj For the total rated capacity of the power generation unit, in order to avoid over-regulation or over-regulation of the unit power generation unit in response to the AGC regulation command, the maximum value of the regulation rate index is not more than 5, and under the condition that the other indexes are unchanged, the more the number of power generation units is, S kj The larger the value is, the smaller the value of the regulating rate index is, the consideration is made from the actual measuring rate Vi of the lifting power generation unit, from the actual situation of the on-site operation of the hydropower plant, the currently commonly used opening mode is that the regulating load variable is executed in place through controlling the variable quantity of the opening of the guide vane, the larger the mechanical intrinsic inertia of the opening of the guide vane is, the faster the unit response time is, the deviation value of the regulating load variable is lifted, the regulating rate index of the AGC can be lifted, thus the regulating rate index of the water-stand-alone unit frequency modulation can be dynamically regulated according to the reference power information and the unit quantity information of the hydropower unit, a fixed unit load regulating value can be set, the load regulating value for the hydropower unit frequency modulation is determined according to the starting quantity of the hydropower plant, and the initial regulating rate index is optimized and lifted through dynamically regulating the load regulating value, so that the regulating rate index after the optimization and lifting is obtained is used as the target regulating rate index.
For example, the traditional small load distribution threshold value is a fixed value, for example, a certain power plant is provided with 4 hydropower units with single units of 230MW, the capacity of a general assembly machine is 920MW, the small load distribution threshold value is 10MW, the single unit regulation dead zone is 3MW, the whole plant active regulation dead zone is 8MW, when the power distribution system operates in a frequency modulation mode, the distribution can only be performed when the active amplitude is larger than 8MW, the small load distribution is performed between 8 and 10MW, the normal average distribution strategy is performed when the power distribution system is larger than 10MW, when the power distribution system is operated for 4 units, the average distribution of 10 to 12MW can not be performed because the single unit dead zone value is 3MW, the condition precision and the regulation rate are not up to standard, if the small load distribution threshold value is simply regulated from 8MW to 15MW, the problem can be solved to a certain extent, but the operation mode of the 4 units is adopted, under the condition of 15-20MW active amplitude, for the active adjusting instruction of a single machine to be 4-5MW, also near an adjusting dead zone, according to the inherent mechanical characteristics of the opening/closing of the guide vanes of the water turbine, the execution precision can be affected to a certain extent, if a dynamic small load distribution threshold value is adopted and is set to be 5MW x N (N is the number of AGC groups), the problem of adjusting speed can be well solved, the small load distribution threshold value during the operation of 1 machine set is 5MW, the small load distribution threshold value during the operation of 4 machine sets is 20MW, and for the active amplitude instruction larger than 20MW, the situation that the effective instruction distributed by the single machine is smaller than 5MW can not occur, so that the adjustment of the small load distribution threshold value is realized, and the initial adjusting speed index is the target adjusting speed index.
S104: and determining the target frequency modulation performance index of the hydroelectric generating set according to the target adjustment rate index, the response time index and the adjustment accuracy index.
The target frequency modulation performance index is determined according to the optimized and improved target adjustment rate index, response time index and adjustment accuracy index, and the frequency modulation performance index of the hydroelectric generating set is correspondingly optimized and improved.
According to the embodiment of the disclosure, after the initial adjustment rate index is processed according to the reference power information and the unit number information of the hydroelectric generating set to obtain the target adjustment rate index, the target frequency modulation performance index of the hydroelectric generating set can be determined according to the target adjustment rate index, the response time index and the adjustment accuracy index.
In the embodiment of the disclosure, when determining the target frequency modulation performance index of the hydroelectric generating set according to the target adjustment rate index, the response time index and the adjustment accuracy index, a frequency modulation performance index K calculation expression k=0.25 of the hydroelectric generating set may be introduced (2*k 1 +k 2 +k 3 ) Wherein k is 1 To optimize the processed targetAdjusting the rate index, k 2 Is the response time index, k of the hydroelectric generating set 3 And for adjusting the precision index, solving the target frequency modulation performance index of the hydroelectric generating set by using a frequency modulation performance index K calculation expression.
In this embodiment, the initial adjustment rate index, the response time index and the adjustment precision index of the hydroelectric generating set are obtained, and the reference power information of the hydroelectric generating set is obtained, wherein the reference power information describes the generating power of the hydroelectric generating set related to the frequency modulation performance index of the hydroelectric generating set, the initial adjustment rate index is processed according to the reference power information and the generating set number information of the hydroelectric generating set to obtain the target adjustment rate index, and the target frequency modulation performance index of the hydroelectric generating set is determined according to the target adjustment rate index, the response time index and the adjustment precision index, so that the dynamic adjustment can be performed on the small load distribution threshold value in the operation of the hydroelectric generating set, the operation of the hydroelectric generating set in different power operation modes can be better adapted, the frequency modulation performance of the hydroelectric generating set can be effectively improved, and the stable operation of a power grid is facilitated to be maintained.
Fig. 2 is a flow chart of a method for optimizing a frequency modulation performance index of a hydroelectric generating set according to another embodiment of the disclosure.
As shown in fig. 2, the frequency modulation performance index optimization method of the hydroelectric generating set comprises the following steps:
S201: and acquiring an initial adjustment rate index, a response time index and an adjustment precision index of the hydroelectric generating set.
S202: and obtaining reference power information of the hydroelectric generating set, wherein the reference power information describes the generating power of the hydroelectric generating set related to the frequency modulation performance index of the hydroelectric generating set.
The above embodiments can be seen from the descriptions of S201 and S202, and are not repeated here.
S203: and determining a load distribution threshold value of the hydroelectric generating set according to the reference power information and the generating set quantity information.
The load distribution threshold value refers to a power load adjustment value applied to each hydroelectric generating set when the hydroelectric generating set is subjected to frequency modulation.
In the embodiment of the disclosure, when the load distribution threshold value of the hydroelectric generating set is determined according to the reference power information and the number of the hydroelectric generating sets, the unit load distribution threshold value can be determined according to the hydroelectric generating set power information related to the frequency modulation performance index of the hydroelectric generating set in the reference power information, and then the load distribution threshold value of the hydroelectric generating set is dynamically determined according to the number of the hydroelectric generating sets started and the unit load distribution threshold value.
S204: and processing the initial adjustment rate index according to the load distribution threshold value to obtain a target adjustment rate index.
According to the embodiment of the disclosure, after the load distribution threshold value of the hydroelectric generating set is determined according to the reference power information and the number information of the generating set, the initial adjustment rate index can be processed according to the load distribution threshold value, and the target adjustment rate index is obtained.
In the embodiment of the disclosure, when the initial adjustment rate index is processed according to the load distribution threshold value to obtain the target adjustment rate index, the load distribution threshold value can be dynamically adjusted, so that the hydroelectric generating set can correspondingly automatically generate the control instruction at a faster rate under the corresponding load distribution threshold value, and the initial adjustment rate index is improved to obtain the target adjustment rate index.
Optionally, in some embodiments, the target adjustment rate indicator is related to: the method comprises the steps of actually measuring the adjusting speed of a generating unit of the hydroelectric generating set, and the average standard adjusting speed of the generating unit in a frequency modulation resource distribution area where the hydroelectric generating set is located, wherein an initial adjusting speed index is processed according to a load distribution threshold value to obtain a target adjusting speed index, the actually measured adjusting speed can be adjusted according to the load distribution threshold value to obtain an actually measured adjusting speed after adjustment, and the target adjusting speed index is determined according to the actually measured adjusting speed after adjustment and the average standard adjusting speed, so that the actually measured adjusting speed of the hydroelectric generating set can be dynamically adjusted, the frequency modulation western energy index of the hydroelectric generating set is effectively improved, and the execution speed and the execution accuracy of the hydroelectric generating set to an automatic generating control instruction are effectively improved.
In the embodiment of the disclosure, the average standard adjustment rate of the power generation units in the frequency modulation resource distribution area where the hydroelectric generating set is located can be calculated by the following expression:
Figure BDA0004154239590000091
wherein S is H S is the total rated capacity of the water motor group in the frequency modulation resource distribution area C For the total rated capacity of the internal combustion coal unit in the frequency modulation resource distribution area, S F S is the total rated capacity of the circulating fluidized bed unit in the frequency modulation resource distribution area G For the total rated capacity of the fuel gas and the fuel oil set in the frequency modulation resource distribution area, S E Total rated capacity of other types of units in frequency modulation resource distribution area S ALL And the total rated capacity of all units in the frequency modulation resource distribution area. The standard regulation rate of the conventional hydroelectric generating set is H%/min of rated capacity, the standard regulation rate of the coal-fired generating set is C%/min of rated capacity, the standard regulation rate of the circulating fluidized bed generating set is F%/min of rated capacity, the standard regulation rate of the gas and fuel generating set is G%/min of rated capacity, and the standard regulation rate of other generating sets according to a grid-connected protocol is E% min of rated capacity.
In the embodiment of the disclosure, an initial adjustment rate index is processed according to a load distribution threshold value to obtain a target adjustment rate index, the load distribution threshold value can be distributed to all hydroelectric units started and operated in a hydroelectric power plant, so that an actual adjustment rate is optimized, the optimized actual adjustment rate is used as an actual adjustment rate after adjustment, and the target adjustment rate index k is determined according to the actual adjustment rate after adjustment and an average standard adjustment rate 1 A computational expression of the target adjustment rate index may be introduced
Figure BDA0004154239590000092
The calculated actual measurement regulation rate V after regulation 1 Total rated capacity S of power generation unit kj And the average standard regulation rate V of the power generation units in the frequency modulation resource distribution area where the hydroelectric generating set is located sv Substituting into the calculation expression to perform countingCalculating to obtain target regulating rate index k 1 。
S205: and determining the target frequency modulation performance index of the hydroelectric generating set according to the target adjustment rate index, the response time index and the adjustment accuracy index.
The above embodiment can be seen for a specific description of S205, and will not be described here.
In this embodiment, the initial adjustment rate index, the response time index and the adjustment accuracy index of the hydroelectric generating set are obtained, the reference power information of the hydroelectric generating set is obtained, the reference power information describes the generating power of the hydroelectric generating set related to the frequency modulation performance index of the hydroelectric generating set, the initial adjustment rate index is processed according to the reference power information and the number information of the generating sets of the hydroelectric generating set to obtain a target adjustment rate index, the target frequency modulation performance index of the hydroelectric generating set is determined according to the target adjustment rate index, the response time index and the adjustment accuracy index, the small load distribution threshold value in the operation of the hydroelectric generating set can be dynamically adjusted, so that the hydroelectric generating set can be better adapted to the operation in different power operation modes, the frequency modulation performance of the hydroelectric generating set can be effectively improved, the stable operation of a power grid can be favorably maintained, the actually measured adjustment rate is obtained after adjustment according to the load distribution threshold value, the actually measured adjustment rate is determined according to the adjusted average standard adjustment rate, and accordingly, the hydropower generating set can be dynamically adjusted by dynamically adjusting the load distribution threshold value, the actually measured adjustment rate of the hydroelectric generating set is improved, the frequency modulation performance index of the generating set is effectively improved, and the execution accuracy of an automatic generating set control command is effectively improved.
Fig. 3 is a flow chart of a method for optimizing a frequency modulation performance index of a hydroelectric generating set according to another embodiment of the disclosure.
As shown in fig. 3, the frequency modulation performance index optimization method of the hydroelectric generating set comprises the following steps:
s301: and acquiring an initial adjustment rate index, a response time index and an adjustment precision index of the hydroelectric generating set.
S302: and obtaining reference power information of the hydroelectric generating set, wherein the reference power information describes the generating power of the hydroelectric generating set related to the frequency modulation performance index of the hydroelectric generating set.
The specific description of S301 and S302 may be referred to the above embodiments, and will not be repeated here.
S303: and determining a unit load distribution value of the hydroelectric generating set according to the reference rate adjustment information.
The unit load distribution value is set according to the reference rate adjustment information and used for dynamically adjusting the load distribution threshold value, and the unit load distribution value can be multiplied by the number of the hydroelectric generating sets which are started and run in the hydropower plant to obtain the load distribution threshold value of the hydroelectric generating sets.
In the embodiment of the disclosure, when determining the unit load distribution value of the hydroelectric generating set according to the reference rate adjustment information, the power information related to the frequency modulation performance index of the hydroelectric generating set can be analyzed and processed, and the calculation rule of the actually measured rate Vi of the generating unit is that the unit load distribution value is equal to the absolute value P i1 -P i0 |≥P Ti And |t i1 -t i0 |≥L 1 Under the condition of (a) and (b),
Figure BDA0004154239590000111
in megawatts/second, where P i0 For the initial calculation time of the calculation period i, the difference between the output of the power generation unit and the output at the initial time is larger than the initial calculation setting threshold P for the first time sd Time t of (2) i1 For calculating the ending calculation time of the period i, for reasonably avoiding the target dead zone and truly reflecting the adjustment rate, selecting the time when the power generation unit finishes the current adjustment instruction D%, D is the ending calculation time proportion of the calculation period, and taking 70, P i0 For calculating the output starting value of the period i, for calculating the starting time t i0 The output of the power generation unit P i1 To calculate the output end value of the period i, to calculate the time t for end i1 The output of the power generation unit is calculated by L1 for regulating the speed, the threshold time is calculated to be 4 seconds, and P Ti For regulating the speed, calculating a threshold value, and calculating an expression of the plant-level AGC hydroelectric generating unit as follows
Figure BDA0004154239590000112
In megawatts, where S dj For the maximum single machine rated capacity of the power plant started at the moment, R 3 Taking a fixed value of 4 and B3 as a base line value, taking a value of 20MW, taking a Max/Min as a big/small value, taking a big value, calculating according to the formula, and only when S dj If the weight is more than or equal to 500MW>
Figure BDA0004154239590000113
It will take more than 20MW, for a unit with maximum single machine rated capacity < 500MW +. >
Figure BDA0004154239590000114
If the measured adjustment rate is 20MW, the unit load distribution value can be determined to be 5W, otherwise, the calculated expression of the measured adjustment rate is +.>
Figure BDA0004154239590000115
Optionally, in some embodiments, the reference power information includes: the method comprises the steps of determining unit load distribution values of the hydroelectric generating set according to power regulation dead zone information and rated power information of the hydroelectric generating set, and determining the unit load distribution values according to the power regulation dead zone information and the rated power information, so that the unit load distribution values can be determined according to the power regulation dead zone information, the situation that the execution of the automatic power generation control command by the hydroelectric generating set is influenced by the fact that the regulation value of a power regulation command is near the power regulation dead zone is avoided, and the accuracy of the hydroelectric generating set in executing the automatic power generation control command is guaranteed.
In the embodiment of the disclosure, when determining a unit load distribution value according to power regulation dead zone information and rated power information, calculation can be performed by adopting a mode that a certain power plant is provided with a unit with 4 units of 230MW, the capacity of a general assembly machine is 920MW, a small load distribution threshold value is 10MW, a single unit regulation dead zone is 3MW, a whole plant active regulation dead zone is 8MW, distribution can only be performed when operating in a frequency modulation mode, the active amplitude is greater than 8MW, small load distribution is performed between 8MW and 10MW, normal average distribution strategy is performed for the 10MW, and when operating 4 units, the dead zone value is 3MW, so that the average distribution of 10MW to 12MW is not performed, the condition that the condition precision and the regulation rate are not up to standard can occur, the regulation performance of the units can be seriously affected, if the small load distribution threshold value is simply regulated to 15MW, the problem can be solved to a certain extent, but when the active amplitude of the single unit is 15MW and 20MW is in the condition that the active amplitude is greater than 8MW, the active amplitude is 4 MW, the small load distribution threshold value is set to be 5MW, and the problem is solved when the unit load distribution threshold value is set to be 5MW, and the dynamic load distribution threshold value is set to be 5MW, and the threshold value is set to be small when the running is 5MW is set to be the threshold value. For active amplitude commands greater than 20MW, the single machine will not be assigned to an active command that is less than 5 MW.
S304: and determining a load distribution threshold value according to the unit load distribution value and the unit number information.
After the unit load distribution value of the hydroelectric generating set is determined according to the reference rate adjustment information, the embodiment of the disclosure can determine the load distribution threshold value according to the unit load distribution value and the unit number information.
In the embodiment of the disclosure, when the load distribution threshold value is determined according to the unit load distribution value and the unit number information, the unit load distribution value and the unit number information may be multiplied to obtain a corresponding product result value, and the product result value is used as the load distribution threshold value.
S305: and processing the initial adjustment rate index according to the load distribution threshold value to obtain a target adjustment rate index.
S306: and determining the target frequency modulation performance index of the hydroelectric generating set according to the target adjustment rate index, the response time index and the adjustment accuracy index.
The specific description of S305 and S306 may be referred to the above embodiments, and will not be repeated here.
In this embodiment, the initial adjustment rate index, the response time index and the adjustment precision index of the hydroelectric generating set are obtained, the reference power information of the hydroelectric generating set is obtained, the reference power information describes the generating power of the hydroelectric generating set related to the frequency modulation performance index of the hydroelectric generating set, the initial adjustment rate index is processed according to the reference power information and the unit number information of the hydroelectric generating set to obtain the target adjustment rate index, the target frequency modulation performance index of the hydroelectric generating set is determined according to the target adjustment rate index, the response time index and the adjustment precision index, the small load distribution threshold value in the operation of the hydroelectric generating set can be dynamically adjusted, the hydroelectric generating set can be better adapted to the operation in different power operation modes, the frequency modulation performance of the hydroelectric generating set can be effectively improved, the stable operation of a power grid can be maintained, the unit load distribution value can be determined according to the power adjustment dead zone information, the adjustment value of the unit load distribution value is prevented from being close to the power adjustment dead zone, the execution of the hydroelectric generating set on the automatic control instruction is prevented, and the accuracy of the execution of the automatic power generation control instruction by the hydroelectric generating set is ensured.
Fig. 4 is a schematic structural diagram of a frequency modulation performance index optimizing apparatus of a hydroelectric generating set according to an embodiment of the present disclosure.
As shown in fig. 4, the frequency modulation performance index optimizing apparatus 40 of the hydro-power generating unit includes:
a first obtaining module 401, configured to obtain an initial adjustment rate index, a response time index, and an adjustment precision index of the hydroelectric generating set;
a second obtaining module 402, configured to obtain reference power information of the hydroelectric generating set, where the reference power information describes a generating power of the hydroelectric generating set related to a frequency modulation performance index of the hydroelectric generating set;
the processing module 403 is configured to process the initial adjustment rate index according to the reference power information and the unit number information of the hydroelectric units, so as to obtain a target adjustment rate index; and
the determining module 404 is configured to determine a target frequency modulation performance index of the hydroelectric generating set according to the target adjustment rate index, the response time index, and the adjustment accuracy index.
In some embodiments of the present disclosure, as shown in fig. 5, fig. 5 is a schematic structural diagram of a frequency modulation performance index optimizing apparatus of a hydroelectric generating set according to another embodiment of the present disclosure, where a processing module 403 includes:
a determining submodule 4031, configured to determine a load distribution threshold value of the hydroelectric generating set according to the reference power information and the number of the hydroelectric generating set;
The processing submodule 4032 is configured to process the initial adjustment rate indicator according to the load distribution threshold value to obtain a target adjustment rate indicator.
In some embodiments of the present disclosure, wherein the determination submodule 4031 is specifically configured to:
determining a unit load distribution value of the hydroelectric generating set according to the reference rate adjustment information;
and determining a load distribution threshold value according to the unit load distribution value and the unit number information.
In some embodiments of the present disclosure, wherein determining submodule 4031 is further configured to:
determining a product result value of the unit load distribution value and the unit quantity information;
and taking the product result value as a load distribution threshold value.
In some embodiments of the present disclosure, the reference power information includes: the power regulation dead zone information and rated power generation information of the hydroelectric generating set;
wherein the determining submodule 4031 is further configured to:
and determining a unit load distribution value according to the power regulation dead zone information and the rated power generation information.
In some embodiments of the present disclosure, the target adjustment rate indicator is related to: the actual measurement adjusting rate of the generating unit of the hydroelectric generating set is equal to the average standard adjusting rate of the generating unit in the frequency modulation resource distribution area where the hydroelectric generating set is located;
The processing submodule 4032 is specifically configured to:
according to the load distribution threshold value, regulating the actual measurement regulating rate to obtain the regulated actual measurement regulating rate;
and determining a target regulation rate index according to the regulated actual measurement regulation rate and the average standard regulation rate.
Corresponding to the frequency modulation performance index optimization method of the hydroelectric generating set provided by the embodiments of fig. 1 to 3, the present disclosure further provides a frequency modulation performance index optimization device of the hydroelectric generating set, and since the frequency modulation performance index optimization device of the hydroelectric generating set provided by the embodiments of the present disclosure corresponds to the frequency modulation performance index optimization method of the hydroelectric generating set provided by the embodiments of fig. 1 to 3, implementation of the frequency modulation performance index optimization method of the hydroelectric generating set is also applicable to the frequency modulation performance index optimization device of the hydroelectric generating set provided by the embodiments of the present disclosure, which is not described in detail in the embodiments of the present disclosure.
In this embodiment, the initial adjustment rate index, the response time index and the adjustment precision index of the hydroelectric generating set are obtained, and the reference power information of the hydroelectric generating set is obtained, wherein the reference power information describes the generating power of the hydroelectric generating set related to the frequency modulation performance index of the hydroelectric generating set, the initial adjustment rate index is processed according to the reference power information and the generating set number information of the hydroelectric generating set to obtain the target adjustment rate index, and the target frequency modulation performance index of the hydroelectric generating set is determined according to the target adjustment rate index, the response time index and the adjustment precision index, so that the dynamic adjustment can be performed on the small load distribution threshold value in the operation of the hydroelectric generating set, the operation of the hydroelectric generating set in different power operation modes can be better adapted, the frequency modulation performance of the hydroelectric generating set can be effectively improved, and the stable operation of a power grid is facilitated to be maintained.
In order to implement the above embodiments, the present disclosure further proposes a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method for optimizing a frequency modulation performance index of a hydroelectric generating set as proposed in the foregoing embodiments of the present disclosure.
In order to implement the above embodiments, the present disclosure further proposes a computer program product which, when executed by an instruction processor in the computer program product, performs the method for optimizing the frequency modulation performance index of a hydroelectric generating set as proposed in the foregoing embodiments of the present disclosure.
Fig. 6 illustrates a block diagram of an exemplary electronic device suitable for use in implementing embodiments of the present disclosure.
The computer device 12 shown in fig. 6 is merely an example and should not be construed as limiting the functionality and scope of use of the disclosed embodiments.
As shown in FIG. 6, the computer device 12 is in the form of a general purpose computing device. Components of computer device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, a bus 18 that connects the various system components, including the system memory 28 and the processing units 16.
Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, and a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include industry Standard architecture (Industry Standard Architecture; hereinafter ISA) bus, micro channel architecture (Micro Channel Architecture; hereinafter MAC) bus, enhanced ISA bus, video electronics standards Association (Video Electronics Standards Association; hereinafter VESA) local bus, and peripheral component interconnect (Peripheral Component Interconnection; hereinafter PCI) bus.
Computer device 12 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by computer device 12 and includes both volatile and nonvolatile media, removable and non-removable media.
Memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (Random Access Memory; hereinafter: RAM) 30 and/or cache memory 32. The computer device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from or write to non-removable, nonvolatile magnetic media (not shown in FIG. 6, commonly referred to as a "hard disk drive").
Although not shown in fig. 6, a magnetic disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk (e.g., a compact disk read only memory (Compact Disc Read Only Memory; hereinafter CD-ROM), digital versatile read only optical disk (Digital Video Disc Read Only Memory; hereinafter DVD-ROM), or other optical media) may be provided. In such cases, each drive may be coupled to bus 18 through one or more data medium interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of the various embodiments of the disclosure.
A program/utility 40 having a set (at least one) of program modules 42 may be stored in, for example, memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules 42 generally perform the functions and/or methods in the embodiments described in this disclosure.
The computer device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), one or more devices that enable a person to interact with the computer device 12, and/or any devices (e.g., network card, modem, etc.) that enable the computer device 12 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 22. Moreover, the computer device 12 may also communicate with one or more networks such as a local area network (Local Area Network; hereinafter LAN), a wide area network (Wide Area Network; hereinafter WAN) and/or a public network such as the Internet via the network adapter 20. As shown, network adapter 20 communicates with other modules of computer device 12 via bus 18. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with computer device 12, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
The processing unit 16 executes various functional applications and parameter information determination by running a program stored in the system memory 28, for example, implementing the frequency modulation performance index optimization method of the hydro-power generating unit mentioned in the foregoing embodiment.
It should be noted that in the description of the present disclosure, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present disclosure, unless otherwise indicated, the meaning of "a plurality" is two or more.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present disclosure in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present disclosure.
It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
Furthermore, each functional unit in the embodiments of the present disclosure may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present disclosure have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the present disclosure, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the present disclosure.

Claims (10)

1. The frequency modulation performance index optimization method of the hydroelectric generating set is characterized by comprising the following steps of:
acquiring an initial adjustment rate index, a response time index and an adjustment precision index of the hydroelectric generating set;
acquiring reference power information of the hydroelectric generating set, wherein the reference power information describes the generating power of the hydroelectric generating set related to the frequency modulation performance index of the hydroelectric generating set;
processing the initial regulation rate index according to the reference power information and the unit number information of the hydroelectric units to obtain a target regulation rate index; and
and determining the target frequency modulation performance index of the hydroelectric generating set according to the target adjustment rate index, the response time index and the adjustment precision index.
2. The method of claim 1, wherein said processing said initial adjustment rate indicator based on said reference power information and said unit number information of said hydroelectric unit to obtain a target adjustment rate indicator comprises:
Determining a load distribution threshold value of the hydroelectric generating set according to the reference power information and the generating set quantity information;
and processing the initial regulation rate index according to the load distribution threshold value to obtain the target regulation rate index.
3. The method of claim 2, wherein said determining a load distribution threshold for said hydroelectric generating set based on said reference power information and said set number information comprises:
determining a unit load distribution value of the hydroelectric generating set according to the reference rate adjustment information;
and determining the load distribution threshold value according to the unit load distribution value and the unit quantity information.
4. The method of claim 3, wherein said determining said load distribution threshold based on said unit load distribution value and said unit number information comprises:
determining a product result value of the unit load distribution value and the unit quantity information;
and taking the product result value as the load distribution threshold value.
5. The method of claim 3, wherein the reference power information comprises: the power regulation dead zone information and rated power generation information of the hydroelectric generating set;
Wherein, according to the reference rate adjustment information, determining a unit load distribution value of the hydroelectric generating set includes:
and determining the unit load distribution value according to the power regulation dead zone information and the rated power generation information.
6. The method of claim 2, wherein the target adjustment rate indicator relates to: the actual measurement adjusting rate of the generating unit of the hydroelectric generating set is equal to the average standard adjusting rate of the generating unit in the frequency modulation resource distribution area where the hydroelectric generating set is located;
the processing the initial adjustment rate index according to the load distribution threshold value to obtain the target adjustment rate index includes:
adjusting the actual measurement adjusting rate according to the load distribution threshold value to obtain an adjusted actual measurement adjusting rate;
and determining the target regulation rate index according to the regulated actual measurement regulation rate and the average standard regulation rate.
7. The utility model provides a frequency modulation performance index optimizing apparatus of hydroelectric generating set which characterized in that includes:
the first acquisition module is used for acquiring an initial adjustment rate index, a response time index and an adjustment precision index of the hydroelectric generating set;
The second acquisition module is used for acquiring reference power information of the hydroelectric generating set, wherein the reference power information describes the generating power of the hydroelectric generating set related to the frequency modulation performance index of the hydroelectric generating set;
the processing module is used for processing the initial adjustment rate index according to the reference power information and the unit number information of the hydroelectric units to obtain a target adjustment rate index; and
and the determining module is used for determining the target frequency modulation performance index of the hydroelectric generating set according to the target adjustment rate index, the response time index and the adjustment precision index.
8. An electronic device, comprising:
memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method according to any one of claims 1-6 when executing the program.
9. A computer readable storage medium, characterized in that a computer program is stored thereon, which program, when being executed by a processor, implements the method according to any of claims 1-6.
10. A computer program product comprising a computer program which, when executed by a processor, implements the steps of the method according to any of claims 1-6.
CN202310328686.6A 2023-03-29 2023-03-29 Frequency modulation performance index optimization method and device of hydroelectric generating set and electronic equipment Pending CN116345569A (en)

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