CN117635367A

CN117635367A - Method, device and equipment for determining loss electric quantity of fan

Info

Publication number: CN117635367A
Application number: CN202311585198.XA
Authority: CN
Inventors: 赵凯; 闫功; 韩敬涛
Original assignee: Sprixin Technology Co ltd
Current assignee: Sprixin Technology Co ltd
Priority date: 2023-11-24
Filing date: 2023-11-24
Publication date: 2024-03-01

Abstract

The invention provides a method, a device and equipment for determining the loss electric quantity of a fan, belonging to the technical field of new energy power systems, wherein the method comprises the following steps: determining theoretical power generation amount of the fan in a target time period under the condition of no ice coating; the theoretical power generation amount is determined based on a wind speed power curve of the fan and/or a wind speed power mapping table of the fan; the wind speed power curve of the fan is used for representing the fitting relation between the wind speed and the power generated by the fan under the condition of no icing; acquiring actual power generation amount of a fan in a target time period under the condition of icing; and determining the lost electric quantity of the fan in the target time period according to the theoretical electric quantity of the fan in the target time period under the condition of no ice coating and the actual electric quantity of the fan in the target time period under the condition of ice coating. The method of the invention realizes the rapid and accurate calculation of the fan loss electric quantity, and improves the efficiency and accuracy of the fan loss electric quantity calculation.

Description

Method, device and equipment for determining loss electric quantity of fan

Technical Field

The invention relates to the technical field of new energy power systems, in particular to a method, a device and equipment for determining the loss electric quantity of a fan.

Background

Along with the increase of the construction capacity of the wind power plant, the fluctuation of the power generation power of the wind power plant can seriously influence the running stability and the dispatching safety of a power grid, and especially in the abnormal weather occurrence stage, the torque can drop to zero or even negative torque from positive due to the icing condition of fan blades, so that the machine set is stopped, the power generation capacity of the machine set is seriously influenced, and the output of the wind power plant in the icing period under the same wind speed condition is reduced or even stopped directly.

In the related technology, the power loss of the fan under abnormal weather conditions not only can provide reasonable operation data for a wind farm, but also is very important reference data for the optimization and adjustment of the follow-up power prediction result. Therefore, how to accurately determine the electric quantity lost by the fan under the condition of icing is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

Aiming at the problems in the prior art, the embodiment of the invention provides a method, a device and equipment for determining the loss electric quantity of a fan.

Specifically, the embodiment of the invention provides the following technical scheme:

in a first aspect, an embodiment of the present invention provides a method for determining a lost power of a fan, including:

determining theoretical power generation amount of the fan in a target time period under the condition of no ice coating; the theoretical power generation amount is determined based on a wind speed power curve of the fan and/or a wind speed power mapping table of the fan; the wind speed power curve of the fan is used for representing the fitting relation between wind speed and fan power under the condition of no icing; the wind speed power mapping table of the fan is used for representing the corresponding relation between the wind speed interval and the power generated by the fan under the condition of no icing;

Acquiring actual power generation amount of a fan in a target time period under the condition of icing;

and determining the lost electric quantity of the fan in the target time period according to the theoretical electric quantity of the fan in the target time period under the condition of no ice coating and the actual electric quantity of the fan in the target time period under the condition of ice coating.

Further, the determining the theoretical power generation amount of the fan in the target time period under the condition of no ice coating comprises the following steps:

acquiring wind speed information corresponding to a fan in each sub-time period in a target time period;

determining theoretical power generation power of the fan in each sub-time period of the target time period under the condition of no icing according to wind speed information corresponding to the fan in each sub-time period of the target time period and a wind speed power curve of the fan;

and integrating the theoretical power generated by the fan in each sub-period to obtain the theoretical power generation amount of the fan in the target period under the condition of no ice coating.

Determining theoretical power generation power of the fan in each sub-time period of the target time period under the condition of no ice coating according to wind speed information corresponding to the fan in each sub-time period of the target time period and a wind speed power mapping table of the fan;

Further, a wind speed power curve of the wind turbine is determined based on the following manner:

acquiring wind speed information of a fan in each sub-time period in a historical time period under the condition of no icing;

acquiring the actual power generation power of the fan in each sub-time period in the historical time period under the condition of no icing;

fitting the wind speed information of the fan in each sub-time period in the historical time period under the condition of no ice coating and the actual power generation power of the fan in each sub-time period in the historical time period under the condition of no ice coating to obtain a wind speed power curve of the fan.

Further, acquiring wind speed information of the fan in each sub-time period in the historical time period under the condition of no ice coating; after obtaining the actual power generated by the fan in each sub-time period in the historical time period under the condition of no icing, the method further comprises the following steps:

Acquiring fan state information of a fan in each sub-time period in a historical time period under the condition of no ice coating;

according to wind speed information of the fan in each sub-time period in the historical time period under the condition of no ice coating and actual power generation and theoretical power generation of the fan in each sub-time period in the historical time period under the condition of no ice coating, checking the accuracy of the obtained wind speed information and the obtained actual power generation;

and verifying the accuracy of the obtained fan state information and the obtained actual power according to the fan state information of the fan in each sub-time period in the historical time period under the condition of no ice coating and the actual power generated by the fan in each sub-time period in the historical time period under the condition of no ice coating.

Further, the obtaining the actual power generation amount of the fan in the target time period under the condition of icing includes:

acquiring the generated energy of a fan in a target time period under the condition of icing; and/or the number of the groups of groups,

and acquiring the power generation power of the fan in each sub-time period in the target time period under the icing condition, and integrating the power generation power in each sub-time period to obtain the actual power generation amount of the fan in the target time period under the icing condition.

Further, the determining the lost electric quantity of the fan in the target time period according to the theoretical electric quantity of the fan in the target time period under the condition of no ice coating and the actual electric quantity of the fan in the target time period under the condition of ice coating comprises the following steps:

and taking the difference value between the theoretical power generation amount of the fan in the target time period under the condition of no ice coating and the actual power generation amount of the fan in the target time period under the condition of ice coating as the lost power quantity of the fan in the target time period.

In a second aspect, an embodiment of the present invention further provides a device for determining a lost power of a fan, including:

the determining module is used for determining the theoretical power generation amount of the fan in the target time period under the condition of no ice coating; the theoretical power generation amount is determined based on a wind speed power curve of the fan and/or a wind speed power mapping table of the fan; the wind speed power curve of the fan is used for representing the fitting relation between wind speed and fan power under the condition of no icing; the wind speed power mapping table of the fan is used for representing the corresponding relation between the wind speed interval and the power generated by the fan under the condition of no icing;

the acquisition module is used for acquiring the actual power generation amount of the fan in the target time period under the condition of icing;

And the calculation module is used for determining the loss electric quantity of the fan in the target time period according to the theoretical electric quantity of the fan in the target time period under the condition of no ice coating and the actual electric quantity of the fan in the target time period under the condition of ice coating.

In a third aspect, an embodiment of the present invention further 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 implements the method for determining a fan loss electric power according to the first aspect when executing the program.

In a fourth aspect, embodiments of the present invention also provide a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method for determining a fan loss power according to the first aspect.

In a fifth aspect, embodiments of the present invention further provide a computer program product comprising a computer program which, when executed by a processor, implements the method for determining a lost power of a fan according to the first aspect.

According to the method, the device and the equipment for determining the fan loss electric quantity, provided by the embodiment of the invention, the fitting relation between the wind speed and the fan power generation power under the condition of no icing and the corresponding relation between the wind speed interval and the fan power generation power under the condition of no icing are accurately represented based on the wind speed power curve of the fan and/or the wind speed power mapping table of the fan, so that the theoretical electric generation capacity of the fan under the condition of no icing in a target time period can be accurately determined based on the wind speed power curve of the fan and/or the wind speed power mapping table of the fan, the accurate calculation and mutual verification of the theoretical electric generation capacity of the fan under the condition of no icing in a plurality of modes are realized, and the accuracy of the calculation result of the theoretical electric generation capacity of the fan under the condition of no icing can be improved while the flexibility of the calculation mode of the theoretical electric generation capacity of the fan under the condition of no icing is improved; further, after the actual power generation amount of the fan in the target time period under the condition of ice coating is obtained, the difference value between the theoretical power generation amount of the fan in the target time period under the condition of no ice coating and the actual power generation amount of the fan in the target time period under the condition of ice coating is used as the loss power of the fan in the target time period, so that the rapid and accurate calculation of the loss power of the fan is realized, and the efficiency and the accuracy of the calculation of the loss power of the fan are improved.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic flow chart of a method for determining fan loss electric quantity according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a fan loss electricity determining device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The method provided by the embodiment of the invention can be applied to a new energy power system scene, so that the rapid and accurate calculation of the loss electric quantity of the fan is realized, and the efficiency and accuracy of the calculation of the loss electric quantity of the fan are improved.

According to the fan loss electric quantity determining method, based on the wind speed power curve of the fan and/or the wind speed power mapping table of the fan, the fitting relation between wind speed and fan power generation power under the condition of no ice coating and the corresponding relation between wind speed interval and fan power generation power under the condition of no ice coating are accurately represented, so that the theoretical electric quantity of the fan in a target time period under the condition of no ice coating can be accurately determined based on the wind speed power curve of the fan and/or the wind speed power mapping table of the fan, accurate calculation and mutual verification of the theoretical electric quantity of the fan under the condition of no ice coating in a target time period based on various modes are realized, and the accuracy of a calculation result of the theoretical electric quantity of the fan under the condition of no ice coating can be improved while the flexibility of the calculation mode of the theoretical electric quantity of the fan under the condition of no ice coating is improved; further, after the actual power generation amount of the fan in the target time period under the condition of ice coating is obtained, the difference value between the theoretical power generation amount of the fan in the target time period under the condition of no ice coating and the actual power generation amount of the fan in the target time period under the condition of ice coating is used as the loss power of the fan in the target time period, so that the rapid and accurate calculation of the loss power of the fan is realized, and the efficiency and the accuracy of the calculation of the loss power of the fan are improved.

The following describes the technical scheme of the present invention in detail with reference to fig. 1 to 3. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

Fig. 1 is a schematic flow chart of an embodiment of a method for determining a fan loss electric quantity according to an embodiment of the present invention. As shown in fig. 1, the method provided in this embodiment includes:

step 101, determining theoretical power generation amount of a fan in a target time period under the condition of no ice coating; the theoretical power generation amount is determined based on a wind speed power curve of the fan and/or a wind speed power mapping table of the fan; the wind speed power curve of the fan is used for representing the fitting relation between the wind speed and the power generated by the fan under the condition of no icing; the wind speed power mapping table of the fan is used for representing the corresponding relation between the wind speed interval and the power generated by the fan under the condition of no icing;

specifically, wind farms are subjected to various abnormal weather conditions during operation, such as fan blade icing during chills, which also increases surface roughness and reduces the aerodynamic performance of the original blade. When ice coating deposits are more and more, the torque can drop to zero from positive to even negative torque, so that the machine set is stopped, the generating capacity of the machine set is seriously influenced, and the output of the wind power plant in the ice coating period under the same wind speed condition is reduced or even stopped directly.

In order to accurately calculate the power generation loss electric quantity of the fan under abnormal weather conditions and accurately calculate the power generation loss electric quantity during icing, in the embodiment of the application, firstly, determining the theoretical power generation quantity of the fan in a target time period under the condition of no icing; the theoretical power generation amount of the fan in the target time period under the condition of no icing is determined based on a wind speed power curve of the fan and/or a wind speed power mapping table of the fan; optionally, the wind speed power curve of the fan represents the fitting relation between the wind speed and the fan power generation under the condition of no icing, so that the theoretical power generation amount of the fan under the condition of no icing in a target time period can be rapidly and accurately determined according to the fitting relation between the wind speed and the fan power generation under the condition of no icing under the condition of obtaining the wind speed in the target time period; alternatively, the target time period may be a preset time period, such as a day, a week, or other time periods, which is not limited in the embodiments of the present application. Optionally, the wind speed power mapping table of the fan characterizes the corresponding relation between the wind speed interval and the fan power generation power under the condition of no ice coating, so that under the condition of obtaining the wind speed of the target time period, the theoretical power generation amount of the fan under the condition of no ice coating in the target time period can be rapidly and accurately determined according to the corresponding relation between the wind speed interval and the fan power generation power under the condition of no ice coating, and the accurate calculation of the theoretical power generation amount of the fan under the condition of no ice coating in the target time period is realized in various modes.

Optionally, the theoretical power generation amount of the fan under the condition of no icing determined based on the wind speed power curve of the fan and the theoretical power generation amount of the fan under the condition of no icing determined based on the wind speed power mapping table of the fan can be mutually verified, for example, if the difference between the theoretical power generation amount of the fan under the condition of no icing determined based on the wind speed power curve of the fan and the theoretical power generation amount of the fan under the condition of no icing determined based on the wind speed power mapping table of the fan is greater than a threshold value, the determined theoretical power generation amount of the fan under the condition of no icing in a target time period is discarded, and the wind speed power curve of the fan and/or the wind speed power mapping table of the fan are revised again; when the difference between the theoretical power generation amount of the fan under the condition of no ice coating determined based on the wind speed power curve of the fan and the theoretical power generation amount of the fan under the condition of no ice coating determined based on the wind speed power mapping table of the fan is smaller than a threshold value, the theoretical power generation amount of the fan under the condition of no ice coating determined based on the wind speed power curve of the fan is taken as the theoretical power generation amount of the fan in a target time period under the condition of no ice coating finally determined; or, in the case that the difference between the theoretical power generation amount of the fan under the no-icing condition determined based on the wind speed power curve of the fan and the theoretical power generation amount of the fan under the no-icing condition determined based on the wind speed power mapping table of the fan is smaller than the threshold value, taking the average value of the sum of the theoretical power generation amount of the fan under the no-icing condition determined based on the wind speed power curve of the fan and the theoretical power generation amount of the fan under the no-icing condition determined based on the wind speed power mapping table of the fan as the theoretical power generation amount of the fan under the no-icing condition in the target time period, thereby improving the accuracy of the calculation result of the theoretical power generation amount of the fan under the no-icing condition while improving the flexibility of the calculation mode of the theoretical power generation amount of the fan under the no-icing condition.

On the other hand, the theoretical power generation power of the fan corresponding to the wind speed information under the condition of no ice coating can be accurately fitted based on the wind speed power curve of the fan, and compared with the mode that the theoretical power generation power of the fan under the condition of no ice coating is determined based on the wind speed power mapping table of the fan, the accuracy is higher; the efficiency of determining the theoretical power generation of the fan is higher based on the mode of the wind speed power mapping table of the fan, and the theoretical power generation of the fan under the condition of no ice coating can be rapidly determined by directly utilizing the corresponding relation between the wind speed interval and the power generation of the fan under the condition of no ice coating.

102, acquiring actual power generation amount of a fan in a target time period under the condition of icing;

specifically, after determining the theoretical power generation amount of the fan in the target time period under the condition of no ice coating, the embodiment of the application further obtains the actual power generation amount of the fan in the target time period under the condition of ice coating; optionally, the actual power generation amount of the fan in the target time period under the condition of icing can be acquired through a fan monitoring system; the target time period corresponding to the theoretical power generation amount of the fan in the embodiment of the application and the target time period corresponding to the actual power generation amount of the fan under the ice-covered condition belong to the same time period; for example, under the condition that the 12-month 1-day fan has ice coating, the theoretical power generation amount of the fan on the 12-month 1-day under the condition that no ice coating exists is predicted based on a wind speed power curve of the fan and/or based on a wind speed power mapping table of the fan, and the actual power generation amount of the fan on the 12-month 1-day under the condition that ice coating exists is collected through a fan monitoring system.

And step 103, determining the lost electric quantity of the fan in the target time period according to the theoretical electric quantity of the fan in the target time period under the condition of no ice coating and the actual electric quantity of the fan in the target time period under the condition of ice coating.

Specifically, after determining the theoretical power generation amount of the fan in the target time period under the condition of no ice coating and obtaining the actual power generation amount of the fan in the target time period under the condition of ice coating, in the embodiment of the application, the lost power of the fan in the target time period can be rapidly and accurately determined according to the theoretical power generation amount of the fan in the target time period under the condition of no ice coating and the actual power generation amount of the fan in the target time period under the condition of ice coating; alternatively, the difference between the theoretical power generation amount of the fan in the target period without ice coating and the actual power generation amount of the fan in the target period with ice coating may be taken as the lost power amount of the fan in the target period. For example, the difference between the predicted theoretical power generation amount of the fan at 12 months 1 day without ice coating and the actual power generation amount of the fan at 12 months 1 day with ice coating can be used as the power loss amount of the fan at 12 months 1 day. Further, after the loss electric quantity of the fan in the target time period is accurately determined, reasonable operation data can be provided for the wind power plant based on the determined loss electric quantity of the fan, the wind power plant power prediction optimization is guided, important reference data is provided for the optimization and adjustment of the follow-up power prediction result, and the electric quantity supply and demand balance of the whole network is ensured.

According to the method, based on the wind speed power curve of the fan and/or the wind speed power mapping table of the fan, the fitting relation between the wind speed and the power generated by the fan under the condition of no ice coating and the corresponding relation between the wind speed interval and the power generated by the fan under the condition of no ice coating are accurately represented, so that the theoretical power generation amount of the fan under the condition of no ice coating in a target time period can be accurately determined based on the wind speed power curve of the fan and/or the wind speed power mapping table of the fan, the accurate calculation and mutual verification of the theoretical power generation amount of the fan under the condition of no ice coating in a target time period based on various modes are realized, and the accuracy of the calculation result of the theoretical power generation amount of the fan under the condition of no ice coating can be improved while the flexibility of the calculation mode of the theoretical power generation amount of the fan under the condition of no ice coating is improved; further, after the actual power generation amount of the fan in the target time period under the condition of ice coating is obtained, the difference value between the theoretical power generation amount of the fan in the target time period under the condition of no ice coating and the actual power generation amount of the fan in the target time period under the condition of ice coating is used as the loss power of the fan in the target time period, so that the rapid and accurate calculation of the loss power of the fan is realized, and the efficiency and the accuracy of the calculation of the loss power of the fan are improved.

In an embodiment, determining a theoretical power generation amount of the fan in a target period of time without ice coating includes:

determining the theoretical power generation power of the fan in each sub-time period of the target time period under the condition of no icing according to the wind speed information corresponding to the fan in each sub-time period of the target time period and the wind speed power curve of the fan;

and integrating the theoretical power generated by the fan in each sub-time period to obtain the theoretical power generation amount of the fan in the target time period under the condition of no ice coating.

Specifically, when determining the theoretical power generation amount of the fan in the target time period under the condition of no icing, the embodiment of the application does not simply take the average wind speed information in the target time period as the wind speed information corresponding to the target time period, but acquires the wind speed information corresponding to each sub-time period in the target time period, so that the wind speed information with finer granularity is acquired; according to the fitting relation between the wind speed information corresponding to the wind speed of the fan in each sub-time period in the target time period under the condition of no ice coating and the wind speed and the power generation power of the fan under the condition of no ice coating in the wind speed power curve of the fan, the theoretical power generation power of the fan in each sub-time period in the target time period under the condition of no ice coating can be accurately determined; further, the theoretical power generation power of the fan in each sub-period is integrated, so that the theoretical power generation amount of the fan in the target period under the condition of no ice coating can be accurately obtained. Alternatively, the length of the target period in the embodiment of the present application is 1 day, and the length of the sub-period is 1 minute; the lengths of the target time period and the sub-time period may also be set according to actual needs, which is not particularly limited in the embodiment of the present application.

Optionally, compared with a mode of determining the theoretical power generation of the fan based on a wind speed power curve of the fan, the mode of determining the theoretical power generation of the fan based on the wind speed power mapping table of the fan is higher in efficiency, and the theoretical power generation of the fan can be determined rapidly by directly utilizing the corresponding relation between the wind speed interval and the power generation of the fan under the condition of no ice coating, so that the accuracy and the efficiency of determining the theoretical power generation of the fan can be comprehensively considered, and the calculation mode of the theoretical power generation of the fan can be selected more flexibly.

Compared with the mode of determining the power generation of the fan based on the average wind speed in the target time period of the fan in the prior art, in the embodiment of the application, on one hand, by acquiring the wind speed information corresponding to each sub-time period of the fan in the target time period, the wind speed information with finer granularity is acquired, further, the theoretical power generation of the fan in each sub-time period of the fan in the target time period under the condition of no ice coating can be determined more accurately based on the wind speed information with finer granularity, and the theoretical power generation of the fan in each sub-time period can be integrated further, so that the theoretical power generation capacity of the fan in the target time period under the condition of no ice coating can be accurately obtained, and the accuracy of the calculation result of the theoretical power generation capacity of the fan under the condition of no ice coating is improved; on the other hand, the fitting relation between the wind speed and the power generated by the fan under the condition of no icing is accurately represented by the wind speed power curve of the fan, so that the theoretical power generated by the fan corresponding to the wind speed information in each sub-time period can be rapidly and accurately calculated according to the wind speed information in each sub-time period with finer granularity and the wind speed power curve of the fan; in the third aspect, according to the embodiment of the application, the fan theoretical power generation power corresponding to the wind speed information in each sub-time period can be accurately fitted based on the wind speed power curve of the fan, and the mode of determining the fan theoretical power generation power based on the wind speed power mapping table of the fan is higher in efficiency, so that the accuracy and the efficiency of determining the fan theoretical power generation power can be comprehensively considered, and the calculation mode of the fan theoretical power generation amount can be selected more flexibly.

According to the method, on one hand, through obtaining the wind speed information corresponding to each sub-time period of the fan in the target time period, the wind speed information with finer granularity is obtained, and further, the theoretical power generation of the fan in each sub-time period of the target time period under the condition of no ice coating can be more accurately determined based on the wind speed information with finer granularity, so that the accuracy of the calculation result of the theoretical power generation of the fan under the condition of no ice coating is improved; on the other hand, the fitting relation of the wind speed and the power generation power of the fan under the condition of no icing is accurately represented by the wind speed power curve of the fan, so that the theoretical power generation power of the fan corresponding to the wind speed information in each sub-time period can be rapidly and accurately calculated according to the wind speed information in each sub-time period with finer granularity and the wind speed power curve of the fan, and the accuracy of the calculation result of the theoretical power generation capacity of the fan under the condition of no icing is improved.

Determining theoretical power generation power of the fan in each sub-time period of the target time period under the condition of no ice coverage according to wind speed information corresponding to the fan in each sub-time period of the target time period and a wind speed power mapping table of the fan;

Specifically, in the embodiment of the application, when determining the theoretical power generation amount of the fan in the target time period under the condition of no ice coating, the theoretical power generation amount of the fan in each sub-time period in the target time period can be rapidly and accurately determined by acquiring the wind speed information corresponding to the fan in each sub-time period in the target time period and further according to the wind speed information corresponding to the fan in each sub-time period in the target time period and the corresponding relation between the wind speed interval and the power generation amount of the fan under the condition of no ice coating in the wind speed power mapping table of the fan; further, the theoretical power generation power of the fan in each sub-period is integrated, so that the theoretical power generation amount of the fan in the target period under the condition of no ice coating can be accurately obtained.

Compared with the mode of determining the power generation of the fan based on the average wind speed in the target time period of the fan in the prior art, in the embodiment of the application, on one hand, the wind speed information with finer granularity is obtained by obtaining the wind speed information corresponding to each sub-time period of the fan in the target time period, and further, the theoretical power generation of the fan in each sub-time period of the fan in the target time period under the condition of no ice coating can be determined more accurately based on the wind speed information with finer granularity, so that the accuracy of the calculation result of the theoretical power generation of the fan under the condition of no ice coating is improved; on the other hand, the corresponding relation between the wind speed interval and the power generation power of the fan under the condition of no ice coating is accurately represented by the wind speed power mapping table of the fan, so that the theoretical power generation power of the fan corresponding to the wind speed information in each sub-time period can be rapidly and accurately calculated according to the wind speed information in each sub-time period with finer granularity and the wind speed power mapping table of the fan; in the third aspect, in the embodiment of the present application, compared with the method of determining the theoretical power generation efficiency of the fan based on the wind speed power curve of the fan, the method of determining the wind speed power mapping table of the fan is higher, and the theoretical power generation efficiency of the fan can be determined quickly by directly using the corresponding relationship between the wind speed interval and the power generation efficiency of the fan under the condition of no ice coverage, so that the accuracy and the efficiency of determining the actual power generation efficiency of the fan can be comprehensively considered, the calculation method of the theoretical power generation amount of the fan can be flexibly selected, the theoretical power generation efficiency of the fan is determined based on the method of the wind speed power mapping table of the fan, and the calculation efficiency of the theoretical power generation amount of the fan under the condition of no ice coverage can be improved while the flexibility of the calculation method of the theoretical power generation amount of the fan under the condition of no ice coverage is improved.

According to the method, on one hand, through obtaining the wind speed information corresponding to each sub-time period of the fan in the target time period, the wind speed information with finer granularity is obtained, and further, the theoretical power generation of the fan in each sub-time period of the target time period under the condition of no ice coating can be more accurately determined based on the wind speed information with finer granularity, so that the accuracy of the calculation result of the theoretical power generation of the fan under the condition of no ice coating is improved; on the other hand, the corresponding relation between the wind speed interval and the power generation power of the fan under the condition of no icing is accurately represented by the wind speed power mapping table of the fan, so that the theoretical power generation power of the fan corresponding to the wind speed information in each sub-period can be rapidly and accurately calculated according to the wind speed information in each sub-period with finer granularity and the wind speed power mapping table of the fan, and the calculation efficiency of the theoretical power generation capacity of the fan under the condition of no icing is improved.

In one embodiment, the wind speed power profile of the wind turbine is determined based on:

And fitting the wind speed information of the fan in each sub-time period in the historical time period under the condition of no ice coating and the actual power generation power of the fan in each sub-time period in the historical time period under the condition of no ice coating to obtain a wind speed power curve of the fan.

Specifically, in the embodiment of the application, the theoretical power generation power of the fan corresponding to the wind speed information is determined based on the wind speed power curve of the fan, and compared with the mode of determining the theoretical power generation power of the fan based on the wind speed power mapping table of the fan, the accuracy of the calculation result of the theoretical power generation amount of the fan under the condition of no ice coating can be effectively improved. Optionally, in the embodiment of the present application, a wind speed power curve of a fan is determined based on the following manner, first, wind speed information of the fan in each sub-period in a historical period under the condition of no icing and actual power generated by the fan in each sub-period in the historical period under the condition of no icing are obtained, and then, the wind speed information of the fan in each sub-period in the historical period under the condition of no icing and the actual power generated by the fan in each sub-period in the historical period under the condition of no icing are fitted, so that the wind speed power curve of the fan can be accurately obtained, and accurate representation of a fitting relationship between wind speed and power generated by the fan under the condition of no icing is realized; further, based on the fitting relation between the wind speed and the fan power generation power under the condition of no ice coating in the wind speed power curve, the fan theoretical power generation power corresponding to the wind speed information can be rapidly and accurately determined, and the accuracy and the efficiency of the calculation result of the fan theoretical power generation capacity under the condition of no ice coating are improved.

According to the method, the wind speed information of the fan in each sub-period in the historical period under the condition of no icing and the actual power generated by the fan in each sub-period in the historical period under the condition of no icing are obtained, the wind speed information of the fan in each sub-period in the historical period under the condition of no icing and the actual power generated by the fan in each sub-period in the historical period under the condition of no icing are fitted, so that a wind speed power curve of the fan can be accurately obtained, the accurate representation of the fitting relation between the wind speed and the power generated by the fan under the condition of no icing is realized, and the accuracy and the efficiency of the calculation result of the theoretical power generation capacity of the fan under the condition of no icing are improved.

In an embodiment, acquiring wind speed information of a fan in each sub-time period in a historical time period under the condition of no icing; after obtaining the actual power generated by the fan in each sub-time period in the historical time period under the condition of no icing, the method further comprises the following steps:

according to the wind speed information of the fan in each sub-time period in the historical time period under the condition of no ice coating and the actual power generation power and the theoretical power generation power of the fan in each sub-time period in the historical time period under the condition of no ice coating, the accuracy of the obtained wind speed information and the obtained actual power generation power is verified;

And checking the accuracy of the acquired fan state information and the actual power according to the fan state information of the fan in each sub-time period in the historical time period under the condition of no ice coating and the actual power generated by the fan in each sub-time period in the historical time period under the condition of no ice coating.

Specifically, in the embodiment of the application, the wind speed power curve of the fan is obtained by fitting the wind speed information of the fan in each sub-time period in the historical time period under the condition of no ice coating and the actual power generated by the fan in each sub-time period in the historical time period under the condition of no ice coating, so that the accurate representation of the fitting relation of the wind speed and the power generated by the fan under the condition of no ice coating is realized. Optionally, in order to improve accuracy of a wind speed power curve of the fan, so that the fitted wind speed power curve can accurately represent a fitting relation between wind speed and power generated by the fan under the condition of no icing, after obtaining wind speed information of the fan in each sub-time period in a historical time period under the condition of no icing and actual power generated by the fan in each sub-time period in the historical time period under the condition of no icing, the embodiment of the invention further obtains fan state information of the fan in each sub-time period in the historical time period under the condition of no icing, and verifies accuracy of the obtained wind speed information and the obtained actual power generated by the association relation between the wind speed information and the actual power generated; the accuracy of the obtained fan state information and the actual power is verified through the association relation between the fan state information and the actual power, so that the accuracy of fitting data is improved, the fitted wind speed power curve can more accurately represent the fitting relation between the wind speed and the fan power under the condition of no icing, and the accuracy of the wind speed power curve of the fan is improved.

Optionally, in the embodiment of the present application, theoretical power generated by the fan in each sub-period corresponding to wind speed information of the fan in each sub-period in the historical period under the condition of no ice coating is determined; according to the theoretical power generated by the fan in each sub-period and the actual power generated by the fan in each sub-period in the historical period under the condition of no ice coating, checking the accuracy of the obtained wind speed information and the actual power generated; alternatively, the theoretical power generated by the fan at different wind speeds can be obtained based on a production manual or an instruction manual of the fan; optionally, under the condition that no icing exists, if the difference value between the theoretical power generated by the fan in each sub-period corresponding to the wind speed information in each sub-period in the historical period and the theoretical power generated by the fan in each corresponding sub-period is smaller than a preset threshold value, checking; and under the condition that the difference value between the theoretical power generation power of the fan in each sub-period corresponding to the wind speed information in each sub-period in the historical period and the theoretical power generation power of the fan in each corresponding sub-period is larger than a preset threshold under the condition that ice coating is not carried out, checking is not passed, and the data are discarded.

Optionally, in the embodiment of the present application, according to fan state information of the fan in each sub-period in the historical period of time under the condition of no ice coating and actual power generated by the fan in each sub-period in the historical period of time under the condition of no ice coating, accuracy of the obtained fan state information and the obtained actual power generated by the fan is verified; optionally, if the fan state information of the fan in each sub-period in the historical period without ice coating and the actual power generated by the fan in each sub-period in the historical period without ice coating are identical to and matched with the acquired trend of the fan state information and the actual power generated by the fan, checking the fan state information and the actual power generated by the fan; and under the condition that the fan state information of the fan in each sub-time period in the historical time period under the icing condition and the actual power generated by the fan in each sub-time period in the historical time period under the non-icing condition are not consistent with and are not matched with the acquired trend of the fan state information and the actual power generated, checking is not passed, and the data is discarded. For example, if the fan state information is normal, the actual power generated by the fan should be similar to the theoretical power generated by the fan; under the condition that the fan state information is fault, the actual power generated by the fan is 0 or is far smaller than the theoretical power generated by the fan.

Optionally, in the embodiment of the application, the accuracy of the obtained wind speed information and the actual power is verified through the association relationship between the wind speed information and the actual power, and the accuracy of the obtained actual power is verified through the association relationship between the fan state information and the actual power, so that the multi-dimensional verification of the wind speed information and the actual power data to be fitted is realized, the defect and bottleneck that the data verification is only carried out singly based on the association relationship between the wind speed information and the actual power in the prior art are avoided, the accuracy of fitting data is improved, the fitting relationship of the wind speed and the fan power under the condition that no icing exists can be more accurately represented by the fitted wind speed power curve, and the accuracy of the wind speed power curve of the fan is improved.

According to the method of the embodiment, on one hand, fan state information of the fan in each sub-time period in the historical time period under the condition of no ice coating is obtained, and the accuracy of the obtained wind speed information and the actual power is verified through the association relation between the wind speed information and the actual power; on the other hand, the accuracy of the obtained actual power is verified through the association relation between the fan state information and the actual power, so that the multi-dimensional verification of the wind speed information to be fitted and the actual power data is realized, the defect and bottleneck that the data verification is only carried out singly based on the association relation between the wind speed information and the actual power in the prior art are avoided, the accuracy of the fitting data is improved, the fitted wind speed power curve can more accurately represent the fitting relation between the wind speed and the fan power under the condition of no icing, and the accuracy of the wind speed power curve of the fan is improved.

In an embodiment, obtaining an actual power generation amount of the fan in a target time period under the condition of icing includes:

and acquiring the power generation power of the fan in each sub-time period in the target time period under the ice coating condition, and integrating the power generation power in each sub-time period to obtain the actual power generation amount of the fan in the target time period under the ice coating condition.

Specifically, when the actual power generation amount of the fan in the target time period under the icing condition is obtained, the power generation amount of the fan in the target time period under the icing condition can be directly collected through a deployed fan monitoring system, and the power generation power of the fan in each sub-time period in the target time period under the icing condition can be obtained, so that the power generation power in each sub-time period is integrated, and the actual power generation amount of the fan in the target time period under the icing condition is obtained; optionally, the method for directly collecting the generated energy of the fan in the target time period based on the fan monitoring system is more accurate, and the method for obtaining the actual generated energy of the fan in the target time period based on the generated power in each sub-time period by integration is more convenient and easier to realize; further, the mutual verification may be performed on the generated energy of the fan in the target time period under the condition of ice coating obtained based on the fan monitoring system and the actual generated energy of the fan in the target time period under the condition of ice coating obtained based on the generated power in each sub-time period by integrating, for example, when the difference between the generated energy of the fan in the target time period under the condition of ice coating directly collected based on the fan monitoring system and the actual generated energy of the fan in the target time period under the condition of ice coating obtained based on the generated power in each sub-time period is greater than a threshold value, the data is discarded and the error cause is located; when the difference between the generated energy of the fan in the target time period under the condition of icing directly acquired based on the fan monitoring system and the generated energy of the fan in the target time period under the condition of icing based on the generated power in each sub-time period is less than a threshold value, the generated energy of the fan in the target time period under the condition of icing directly acquired based on the fan monitoring system is taken as the finally determined actual generated energy of the fan in the target time period under the condition of icing; or when the difference between the generated energy of the fan in the target time period under the condition of icing directly collected by the fan monitoring system and the actual generated energy of the fan in the target time period under the condition of icing obtained by integrating the generated power in each sub-time period is smaller than the threshold value, taking the average value of the sum of the generated energy of the fan in the target time period under the condition of icing directly collected by the fan monitoring system and the actual generated energy of the fan in the target time period under the condition of icing obtained by integrating the generated power in each sub-time period as the finally determined actual generated energy of the fan in the target time period under the condition of icing, thereby improving the accuracy of the calculation result of the actual generated energy of the fan in the target time period under the condition of icing by means of mutual verification while improving the flexibility of the calculation mode of the actual generated energy of the fan in the target time period under the condition of icing finally determined icing.

According to the method, the generated energy of the fan in the target time period under the icing condition is directly collected based on the fan monitoring system, and/or the generated energy of the fan in the target time period is integrated based on the generated energy in each sub-time period to obtain the actual generated energy of the fan in the target time period under the icing condition, so that the accurate calculation and mutual verification of the actual generated energy of the fan in the target time period under the icing condition based on various modes are realized, and the accuracy of the calculation result of the actual generated energy of the fan in the target time period under the icing condition is improved while the flexibility of the calculation mode of the actual generated energy of the fan in the target time period under the icing condition is improved.

The specific flow of the fan loss electricity quantity determining method in the embodiment of the application is as follows:

1. basic data acquisition

The basic data includes: active power data of the fan, machine head wind speed data and fan running state data can be acquired through a fan monitoring system. The ice covering condition of the fan blade can be qualitatively evaluated by on-site observation and fan state information.

Active power data of the fan: the active power data P of the fan is the active power during the normal operation of the fan and is generally connected with a fan monitoring system, and the data required by the invention can be acquired through the data transferred by the fan monitoring system.

Fan head wind speed: the aircraft nose wind speed WS is measured through an anemometer arranged outside the cabin, and is generally connected into a fan monitoring system, and the data required by the invention can be acquired through the data transferred out by the fan monitoring system.

Fan running state: the fan operation state ST generally includes various state data, and for convenience of use, we divide the states into three types, namely, a normal operation state stm (including a normal standby state, a start state or an operation state of the fan), a fan failure state stm (a failure state, a shutdown state, an overhaul state and the like), and an icing influence state stm (individually marked according to an icing recording period).

2. Basic data evaluation

And determining the rationality of the basic data through checking and evaluating the basic data, removing abnormal data, and using the rest reasonable data for synthesizing a wind speed power curve of the fan.

(1) Wind speed and power mutual calibration: and the wind speed and the power data rationality is checked by comparing the wind speed and the real-time power of the real-time fan. In general, a fan leaves a factory and has a standard wind speed power curve, a rated wind speed power (WS-P) curve (fitting formula) of the fan is formed from a wind speed from 0 to a cut-in wind speed to a rated kilometer wind speed section to a cut-out wind speed, and a rated active power value Ppi corresponding to each wind speed value WSi can be calculated according to the rated curve and is compared with the actual power Pmi of the fan at the moment of the wind speed.

(2) Comparing the calculated active power Ppi with the actual fan power Pmi under the wind speed, and when the deviation of the calculated active power Ppi and the actual fan power Pmi is smaller than or equal to the set allowable deviation Pe, namely |Pmi-Ppi| is smaller than or equal to Pe, considering the actual fan power Pmi at the moment as qualified data, and reserving the wind speed WSi and the actual fan power Pmi at the secondary moment.

When the deviation of the two is larger than the set allowable deviation Pe, namely |Pmi-Ppi| > Pe, the actual power Pmi of the fan at the moment is considered to be unqualified data, the wind speed WSi and the actual power Pmi of the fan at the moment are removed, and the wind speed and power data verification at the next moment is carried out.

(3) Active power and fan state checking: and evaluating the rationality of the real-time data of the fan by comparing the state of the real-time fan with the active power value.

3. Determining an actual power generation efficiency curve of a fan

And (3) based on the historical wind speed power data selected in the second step, finishing a wind speed power curve of the fan under the normal wind condition. As a theoretical generation power calculation standard of the fan. The fan wind speed power curve fitting can adopt a least square method to fit a curve equation, or can use an interval table look-up method to form a table with power values corresponding to different wind speed sections.

(1) A least squares fitting formula: p=a×ws ³ +b*WS ² And +c, WS+d, and according to the reasonable wind speed power data selected in the second step, calculating each coefficient (a, b, c, d) in the fitting formula by adopting a least square method to obtain a wind speed power curve of the fan.

(2) Table look-up method: taking a fan with a rated capacity of 1.5MW as an example, the wind speed is cut in at 3m/s, the rated power wind speed is 12m/s, the cut-out wind speed is 25m/s, and the wind speed interval is 0.5m/s. The lookup table formed is shown in table 1:

TABLE 1

4. Calculating the actual theoretical power of the fan

(1) And (3) carrying out wind speed power curve fitting in the third step into the wind speed of the current actually measured fan to calculate the theoretical power Pt of the current fan.

(2) And (3) inquiring the wind speed section of the current measured wind speed in the table according to the wind speed power meter formed in the third step, and correspondingly inquiring the theoretical power Pt of the fan at the current wind speed.

To ensure the accuracy of the subsequent calculation of the accumulated electric quantity, it is recommended to collect the measured wind speed once per minute and correspondingly calculate the theoretical power. That is, 1440 sets of theoretical power data are calculated together from 00:00 to 23:59 per day.

5. Calculating lost electric quantity

And calculating power deviation based on the calculation result of the fourth step and the actual power generation power under the condition of icing of the fan, and obtaining the power generation loss of the icing period according to the power deviation integration of each calculation moment during the icing period.

(1) And according to the theoretical power corresponding to the actual wind speed of the fan at each moment calculated in the fourth step, integrating 1440 groups of theories calculated in one day to obtain the theoretical power generation amount Qt of the fan in the current day.

(2) The daily accumulated power generation amount Qd of the fan in the icing period is acquired, and the daily accumulated power generation amount of the fan can be acquired through a fan monitoring system. Some fan accumulated power generation amounts can be accumulated from the beginning of grid connection (not counted by day), and then the daily accumulated power generation amount Qd needs to be calculated by calculating 23:59 power consumption of the fan per day and subtracting 0:00 power consumption of the fan per day.

(3) Under the condition that the daily accumulated power generation capacity of the fan cannot be directly acquired, the daily accumulated power generation capacity Qd of the fan in the icing period can be calculated by an actual power integration method: and (3) obtaining the daily accumulated power generation capacity of the fan through integration of the collected fan power (the collection frequency is 1 minute).

Lost electric quantity qe=qt-Qd

The application analysis of the loss electric quantity is that the calculated loss electric quantity is relatively small under normal wind conditions and meteorological conditions, so that the power generation efficiency of the fan is stable and normal; under abnormal weather conditions, according to different degrees of blade icing, the power generation efficiency of the fan is correspondingly reduced, and the calculated loss electric quantity is also large or small.

According to the method, through calculating the deviation of the theoretical power generation capacity of the fan under the normal wind condition and the actual power generation capacity of the fan blade under the icing condition, accurate statistics of the power output capacity of the fan blade under the icing condition and the power output capacity loss condition under the normal wind condition is achieved, and further the method is used for guiding optimization adjustment of prediction data, effectively reducing the prediction deviation of the fan under the icing condition, improving the prediction precision of a single wind field during the icing period, avoiding large deviation of a whole-network scheduling plan, and guaranteeing safety and stability of power grid operation.

The fan loss electric quantity determining device provided by the invention is described below, and the fan loss electric quantity determining device described below and the fan loss electric quantity determining method described above can be referred to correspondingly.

Fig. 2 is a schematic structural diagram of a fan loss electricity determining device provided by the invention. The fan loss electric quantity determining device provided in this embodiment includes:

a determining module 710, configured to determine a theoretical power generation amount of the fan in a target period of time under the condition of no ice coating; the theoretical power generation amount is determined based on a wind speed power curve of the fan and/or a wind speed power mapping table of the fan; the wind speed power curve of the fan is used for representing the fitting relation between the wind speed and the power generated by the fan under the condition of no icing; the wind speed power mapping table of the fan is used for representing the corresponding relation between the wind speed interval and the power generated by the fan under the condition of no icing;

An obtaining module 720, configured to obtain an actual power generation amount of the fan in a target time period under the condition of ice coating;

and the calculating module 730 is configured to determine a lost electric quantity of the fan in the target time period according to the theoretical electric quantity of the fan in the target time period under the condition of no ice coating and the actual electric quantity of the fan in the target time period under the condition of ice coating.

Optionally, the determining module 710 is specifically configured to: acquiring wind speed information corresponding to a fan in each sub-time period in a target time period;

Optionally, the wind speed power curve of the wind turbine is determined based on the following manner:

Optionally, the determining module 710 is further configured to: acquiring fan state information of a fan in each sub-time period in a historical time period under the condition of no ice coating;

Optionally, the obtaining module 720 is specifically configured to: acquiring the generated energy of a fan in a target time period under the condition of icing; and/or the number of the groups of groups,

Optionally, the computing module 730 is specifically configured to: and taking the difference value between the theoretical power generation amount of the fan in the target time period under the condition of no ice coating and the actual power generation amount of the fan in the target time period under the condition of ice coating as the lost power quantity of the fan in the target time period.

The device of the embodiment of the present invention is configured to perform the method of any of the foregoing method embodiments, and its implementation principle and technical effects are similar, and are not described in detail herein.

Fig. 3 illustrates a physical schematic diagram of an electronic device, which may include: processor 810, communication interface (Communications Interface) 820, memory 830, and communication bus 840, wherein processor 810, communication interface 820, memory 830 accomplish communication with each other through communication bus 840. The processor 810 may invoke logic instructions in the memory 830 to perform a fan lost power determination method comprising: determining theoretical power generation amount of the fan in a target time period under the condition of no ice coating; the theoretical power generation amount is determined based on a wind speed power curve of the fan and/or a wind speed power mapping table of the fan; the wind speed power curve of the fan is used for representing the fitting relation between the wind speed and the power generated by the fan under the condition of no icing; the wind speed power mapping table of the fan is used for representing the corresponding relation between the wind speed interval and the power generated by the fan under the condition of no icing; acquiring actual power generation amount of a fan in a target time period under the condition of icing; and determining the lost electric quantity of the fan in the target time period according to the theoretical electric quantity of the fan in the target time period under the condition of no ice coating and the actual electric quantity of the fan in the target time period under the condition of ice coating.

Further, the logic instructions in the memory 830 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the method of determining a lost power of a fan provided by the above methods, the method comprising: determining theoretical power generation amount of the fan in a target time period under the condition of no ice coating; the theoretical power generation amount is determined based on a wind speed power curve of the fan and/or a wind speed power mapping table of the fan; the wind speed power curve of the fan is used for representing the fitting relation between the wind speed and the power generated by the fan under the condition of no icing; the wind speed power mapping table of the fan is used for representing the corresponding relation between the wind speed interval and the power generated by the fan under the condition of no icing; acquiring actual power generation amount of a fan in a target time period under the condition of icing; and determining the lost electric quantity of the fan in the target time period according to the theoretical electric quantity of the fan in the target time period under the condition of no ice coating and the actual electric quantity of the fan in the target time period under the condition of ice coating.

In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform the above-provided fan loss electricity determination methods, the method comprising: determining theoretical power generation amount of the fan in a target time period under the condition of no ice coating; the theoretical power generation amount is determined based on a wind speed power curve of the fan and/or a wind speed power mapping table of the fan; the wind speed power curve of the fan is used for representing the fitting relation between the wind speed and the power generated by the fan under the condition of no icing; the wind speed power mapping table of the fan is used for representing the corresponding relation between the wind speed interval and the power generated by the fan under the condition of no icing; acquiring actual power generation amount of a fan in a target time period under the condition of icing; and determining the lost electric quantity of the fan in the target time period according to the theoretical electric quantity of the fan in the target time period under the condition of no ice coating and the actual electric quantity of the fan in the target time period under the condition of ice coating.

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.

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 technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for determining the lost electric quantity of a fan, comprising the following steps:

2. The method for determining the power loss of a fan according to claim 1, wherein determining the theoretical power generation amount of the fan in the target period of time without ice coating comprises:

3. The method for determining the power loss of a fan according to claim 1, wherein determining the theoretical power generation amount of the fan in the target period of time without ice coating comprises:

4. The method of determining a lost power of a wind turbine of claim 2, wherein the wind speed power profile of the wind turbine is determined based on:

5. The method for determining the power loss of a fan according to claim 4, wherein the wind speed information of the fan in each sub-period in the history period without ice is obtained; after obtaining the actual power generated by the fan in each sub-time period in the historical time period under the condition of no icing, the method further comprises the following steps:

6. The method for determining the power loss of a fan according to claim 1, wherein the step of obtaining the actual power generation amount of the fan in the target period of time in the case of icing comprises:

7. The method according to claim 1, wherein the determining the lost power of the blower in the target period based on the theoretical power generation amount of the blower in the target period without icing and the actual power generation amount of the blower in the target period with icing includes:

8. A fan lost electricity determining apparatus, comprising:

9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of determining the lost power of a fan as claimed in any one of claims 1 to 7 when the program is executed by the processor.

10. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the fan lost power determination method of any of claims 1 to 7.