CN115219853B

CN115219853B - Fault early warning processing method and system for current collection line of wind power plant

Info

Publication number: CN115219853B
Application number: CN202211141730.4A
Authority: CN
Inventors: 阮佳阳; 杨兆静; 艾丽娜; 张嗣勇
Original assignee: Beijing Zhimeng Ict Co ltd
Current assignee: Beijing Zhimeng Ict Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-01-20
Anticipated expiration: 2042-09-20
Also published as: CN115219853A

Abstract

The invention provides a fault early warning processing method and a fault early warning processing system for a collecting line of a wind power plant, wherein a pre-stored line loss value is obtained by calculating according to a first historical power and a second historical power; calculating according to a historical time period and a current moment corresponding to a pre-stored line loss value to obtain a first current standard line loss interval; if the second current standard line loss interval is judged to be input by the user, changing the first current standard line loss interval into the second current standard line loss interval; if pre-stored wind speed information corresponding to the current wind speed information exists, comparing the current line loss value with a second current standard line loss interval of the corresponding pre-stored wind speed information to obtain a first fault early warning result; and if the pre-stored wind speed information corresponding to the current wind speed information does not exist, generating a third current standard line loss interval according to the current wind speed information and the pre-stored wind speed sequence, and comparing the current line loss value with the third current standard line loss interval to obtain a second fault early warning result.

Description

Fault early warning processing method and system for current collection line of wind power plant

Technical Field

The invention relates to a data processing technology, in particular to a method and a system for early warning and processing faults of a current collecting line of a wind power plant.

Background

The current collection circuit is an important component of a wind power plant and is a transmission carrier of electric energy generated by a wind turbine generator, one current collection circuit is provided with a plurality of fans to operate, the fans are also a part of the current collection circuit, and at present, most of the wind power plants adopt a mixed current collection circuit, namely, the electric energy of the fans is transmitted to a boosting station in a mode of combining an overhead line and an underground cable to be boosted, and then the boosted electric energy is combined with the power grid.

However, as a plurality of current collecting lines are arranged in the wind power plant, and as the service life of the lines increases, the loss of the lines increases due to the normal aging of insulators and the lines, and at present, the normal loss or the fault loss caused by the overlong service life cannot be judged.

Therefore, how to accurately judge the line fault becomes an urgent problem to be solved.

Disclosure of Invention

The embodiment of the invention provides a method and a system for early warning and processing faults of a current collecting line of a wind power plant.

In a first aspect of the embodiments of the present invention, a method for processing a fault early warning of a collecting line of a wind farm is provided, including:

acquiring first historical power of each wind power device and second historical power of a booster station in corresponding historical time periods of a wind power plant under different wind speed information, and calculating according to the first historical power and the second historical power to obtain a pre-stored line loss value;

calculating according to the historical time period and the current moment corresponding to the pre-stored line loss value to obtain a first current standard line loss interval, and displaying the first current standard line loss interval;

monitoring user behaviors, and if judging that a user actively inputs a second current standard line loss interval, changing the first current standard line loss interval into the second current standard line loss interval;

acquiring first current power of each wind power device and second current power of a booster station under current wind speed information of a wind power plant, calculating according to the first current power of all power generation devices of the wind power plant to obtain first current total power, and determining a current line loss value according to a difference value of the first current total power and the second current power;

if the pre-stored wind speed information corresponding to the current wind speed information exists, comparing the current line loss value with a second current standard line loss interval or a first current standard line loss interval of the corresponding pre-stored wind speed information to obtain a first fault early warning result;

if judging that the pre-stored wind speed information corresponding to the current wind speed information does not exist, performing ascending sorting on all the pre-stored wind speed information to generate a pre-stored wind speed sequence, generating a third current standard line loss interval according to the current wind speed information and the pre-stored wind speed sequence, and comparing the current line loss value with the third current standard line loss interval to obtain a second fault early warning result.

Optionally, in a possible implementation manner of the first aspect, the obtaining a first historical power of each wind power device and a second historical power of a booster station in a corresponding historical time period of the wind farm under different wind speed information, and calculating according to the first historical power and the second historical power to obtain a pre-stored line loss value includes:

acquiring first historical power of each wind power device and second historical power of a booster station in corresponding historical time periods of a wind power plant under different wind speed information;

calculating according to first historical powers of all wind power equipment of a wind power plant to obtain a first historical total power, and obtaining a line loss value under a normal working condition according to a difference value of the first historical total power and the second historical power;

and determining line loss values of different wind speed information as corresponding pre-stored line loss values.

Optionally, in a possible implementation manner of the first aspect, the calculating according to a historical time period and a current time corresponding to the pre-stored line loss value to obtain a first current standard line loss interval, and displaying the first current standard line loss interval includes:

acquiring a historical time period corresponding to the pre-stored line loss value, determining a historical intermediate time of the historical time period, and calculating according to the historical intermediate time and the current time to obtain a time offset coefficient;

calculating according to the time offset coefficient and a pre-stored line loss value to obtain a maximum value of a first current standard line loss interval and a minimum value of the first current standard line loss interval,

wherein,

is the maximum value of the first current standard line loss interval,

a coefficient which is the maximum value of the first current standard line loss section,

in order to pre-store the line loss value,

is the current time of day and is,

is the time in the middle of the history,

is a value of a time constant, and,

in order to normalize the value for the time,

in order to float the error value(s),

is the minimum value of the first current standard line loss interval,

a coefficient which is the minimum value of the first current standard line loss interval;

and generating a first current standard line loss interval according to the maximum value of the first current standard line loss interval and the minimum value of the first current standard line loss interval.

Optionally, in a possible implementation manner of the first aspect, the method further includes:

acquiring the total length of a power collecting line in the wind power plant, and acquiring a length offset coefficient according to the total length of the power collecting line;

calculating according to the length offset coefficient, the time offset coefficient and a pre-stored line loss value to obtain a maximum value of a first current standard line loss interval and a minimum value of the first current standard line loss interval;

calculating the maximum value of a first current standard line loss interval and the minimum value of the first current standard line loss interval by the following formula,

wherein,

is the maximum value of the first current standard line loss interval,

in order to pre-store the line loss value,

as the total length of the current collecting line,

for a predetermined length of the current collecting line,

is a value of a length constant that is,

is a value for the length normalization,

is the current time of day and is,

for the middle of the time in the history,

is a value of a time constant, and,

in order to normalize the value for the time,

in order to float the error value,

is the minimum value of the first current standard line loss interval,

Optionally, in a possible implementation manner of the first aspect, the monitoring the user behavior, and if it is determined that the user actively inputs the second current standard line loss interval, changing the first current standard line loss interval to the second current standard line loss interval includes:

monitoring user behaviors, and if judging that a user actively inputs a second current standard line loss interval, obtaining a first difference value according to the difference value between the maximum value of the second current standard line loss interval and the maximum value of a first current standard line loss interval;

obtaining a second difference value according to the difference value between the minimum value of the second current standard line loss interval and the minimum value of the first current standard line loss interval;

respectively adjusting the coefficient of the maximum value of the first current standard line loss interval and the coefficient of the minimum value of the first current standard line loss interval according to the first difference and the second difference to obtain the coefficient of the maximum value of the second current standard line loss interval and the coefficient of the minimum value of the second current standard line loss interval;

calculating the coefficient of the maximum value of the second current standard line loss interval and the coefficient of the minimum value of the second current standard line loss interval by the following formula,

wherein,

the coefficient being the maximum value of the second current standard line loss interval,

is the maximum value of the second current standard line loss interval,

the adjustment value is reduced for the line loss,

is the minimum value of the second current standard line loss interval,

an adjustment value is added to the line loss,

the coefficient being the minimum value of the second current standard line loss interval.

Optionally, in a possible implementation manner of the first aspect, if it is determined that there is pre-stored wind speed information corresponding to current wind speed information, comparing the current line loss value with a second current standard line loss interval or a first current standard line loss interval of the corresponding pre-stored wind speed information to obtain a first fault early warning result, where the method includes:

if the pre-stored wind speed information corresponding to the current wind speed information exists and the current line loss value is not within a second current standard line loss interval of the corresponding pre-stored wind speed information, marking a current collecting line of the wind power plant as a fault line;

and if the pre-stored wind speed information corresponding to the current wind speed information exists and the current line loss value is within a second current standard line loss interval of the corresponding pre-stored wind speed information, marking the current collecting line of the wind power plant as a normal line.

Optionally, in a possible implementation manner of the first aspect, if it is determined that there is no pre-stored wind speed information corresponding to the current wind speed information, the step of sorting all the pre-stored wind speed information in an ascending order to generate a pre-stored wind speed sequence, generating a third current standard line loss interval according to the current wind speed information and the pre-stored wind speed sequence, and comparing the current line loss value with the third current standard line loss interval to obtain a second fault early warning result includes:

if judging that pre-stored wind speed information corresponding to the current wind speed information does not exist, performing ascending sorting on the pre-stored wind speed information to generate a pre-stored wind speed sequence;

extracting pre-stored wind speed information one bit before and one bit after the current wind speed information from the pre-stored wind speed sequence to obtain first wind speed information and second wind speed information;

calculating according to a pre-stored line loss value corresponding to the first wind speed information, a pre-stored line loss value corresponding to the second wind speed information and a preset attenuation interval to obtain a third current standard line loss interval;

if the current line loss value is not in a third current standard line loss interval, marking a collector line of the wind power plant as a fault line;

and if the current line loss value is within a third current standard line loss interval, marking the collector line of the wind power plant as a normal line.

Optionally, in a possible implementation manner of the first aspect, the calculating according to a pre-stored line loss value corresponding to the first wind speed information, a pre-stored line loss value corresponding to the second wind speed information, and a preset attenuation interval to obtain a third current standard line loss interval includes:

obtaining an intermediate loss value according to an average value of a pre-stored line loss value corresponding to second wind speed information and a pre-stored line loss value corresponding to the first wind speed information;

obtaining the maximum value of a third current standard line loss interval and the minimum value of the third current standard line loss interval according to the product of the intermediate loss value and a preset attenuation interval;

calculating the maximum value of the third current standard line loss interval and the minimum value of the third current standard line loss interval by the following formula,

wherein,

is the maximum value of the third current standard line loss interval,

is a pre-stored line loss value corresponding to the second wind speed information,

is a pre-stored line loss value corresponding to the first wind speed information,

is the maximum value of the preset attenuation interval,

is the minimum value of the preset attenuation interval,

is the third current standardMinimum value of line loss interval.

And generating a third current standard line loss interval according to the maximum value of the third current standard line loss interval and the minimum value of the third current standard line loss interval.

acquiring current line loss values of a plurality of wind power plants and a second current standard line loss interval or a third current standard line loss interval corresponding to current wind speed information;

obtaining a loss degree value according to the difference value between the maximum value of the second current standard line loss interval or the maximum value of the third current standard line loss interval and the current line loss value corresponding to the current wind speed information;

sequencing a plurality of wind power plants in a descending order based on the loss degree value to obtain a fault sequence, wherein the wind power plants have numbers which are preset correspondingly;

selecting a first fault node in a fault sequence as an inspection starting point of an inspection path, constructing a first area based on first position information of the inspection starting point as a center, selecting all first fault nodes positioned in the first area in the fault sequence, and sequentially connecting the corresponding first fault nodes according to a position relation with the inspection starting point to obtain a first inspection intermediate point of the inspection path;

deleting all first fault nodes in the first area from the fault sequence, selecting the first fault node in the fault sequence as a second inspection intermediate point of the inspection path again, and connecting the second inspection intermediate point with the last first inspection intermediate point in the previously obtained inspection path;

constructing a second area based on the second position information of the second inspection intermediate point as a center, selecting all second fault nodes positioned in the second area in the fault sequence again as third inspection intermediate points, and connecting the third inspection intermediate points with the second inspection intermediate points;

and selecting the first fault node in the fault sequence again, repeating the step of obtaining the second inspection intermediate point or the third inspection intermediate point until only one fault node is left in the fault sequence, taking the corresponding fault node as an inspection end point, and connecting the inspection end point with the second inspection intermediate point or the third inspection intermediate point in the inspection path.

In a second aspect of the embodiments of the present invention, a system for early warning and processing a fault of a collecting line of a wind farm is provided, including:

the acquisition module is used for acquiring a first historical power of each wind power device and a second historical power of the booster station in a corresponding historical time period under different wind speed information of the wind power plant, and calculating according to the first historical power and the second historical power to obtain a pre-stored line loss value;

the first calculation module is used for calculating according to the historical time period and the current moment corresponding to the pre-stored line loss value to obtain a first current standard line loss interval and displaying the first current standard line loss interval;

the changing module is used for monitoring user behaviors, and changing the first current standard line loss interval into the second current standard line loss interval if the second current standard line loss interval is judged to be actively input by a user;

the second calculation module is used for acquiring a first current power of each wind power device and a second current power of the booster station under the current wind speed information of the wind power plant, calculating according to the first current powers of all power generation devices of the wind power plant to obtain a first current total power, and determining a current line loss value according to a difference value of the first current total power and the second current power;

the first comparison module is used for comparing the current line loss value with a second current standard line loss interval or a first current standard line loss interval of the corresponding pre-stored wind speed information to obtain a first fault early warning result if the pre-stored wind speed information corresponding to the current wind speed information is judged to exist;

and the second comparison module is used for, if judging that the pre-stored wind speed information corresponding to the current wind speed information does not exist, performing ascending sorting on all the pre-stored wind speed information to generate a pre-stored wind speed sequence, generating a third current standard line loss interval according to the current wind speed information and the pre-stored wind speed sequence, and comparing the current line loss value with the third current standard line loss interval to obtain a second fault early warning result.

In a third aspect of the embodiments of the present invention, there is provided an electronic device, including: memory, a processor and a computer program, the computer program being stored in the memory, the processor running the computer program to perform the method of the first aspect of the invention and the various possible references to the first aspect.

A fourth aspect of the embodiments of the present invention provides a readable storage medium, in which a computer program is stored, the computer program being, when executed by a processor, configured to implement the method according to the first aspect of the present invention and various possible aspects of the first aspect.

According to the method and the system for early warning and processing the faults of the current collecting lines of the wind power plant, provided by the invention, the standard line loss intervals under different wind speeds can be obtained according to the historical normal loss power and the current moment, a user can modify the wrong standard line loss interval to enable the standard line loss interval to be attached to the actual situation, the current line loss value is compared with the standard line loss interval, whether the current collecting lines have faults or not can be more accurately determined, and thus maintenance personnel can accurately allocate the current collecting lines to the corresponding faulty wind power plant, and the faults of the current collecting lines can be more timely solved.

According to the technical scheme provided by the invention, the line loss is increased due to the fact that the longer the service life of the current collecting line corresponding to the wind power plant is, the higher the aging degree of the corresponding insulator, line and the like is, and the larger the corresponding resistance value of the current collecting line is, the larger the corresponding line loss is, the corresponding first current standard line loss interval is generated according to the comprehensive calculation of the service life (current time) or the service life (current time) of the wind power plant and the length of the current collecting line, so that the current line loss value can be conveniently compared with the corresponding first current standard line loss interval, and whether the current collecting line is damaged or not can be directly and accurately judged.

According to the technical scheme provided by the invention, a user can adjust the calculated first current standard line loss interval according to the actual situation and modify the first current standard line loss interval into the second current standard line loss interval.

According to the technical scheme provided by the invention, when the current wind speed information does not exist in the historical wind speed information, the historical wind speed information positioned at the previous position of the current wind speed information and the historical wind speed information positioned at the next position are calculated to obtain a third current standard line loss interval corresponding to the current wind speed information, the current line loss is compared with the standard line loss interval, so that the wind power plant with the abnormal current collecting line is positioned, the line planning is carried out according to the severity of the current collecting line damage, the area with high damage degree is preferentially inspected and maintained, the area with severe damage can be preferentially processed, the electric power can be timely recovered, the preset radius is set to generate the first area, when the severe area is maintained, if the current collecting line with poor damage exists nearby, the current collecting line can be preferentially processed nearby, the path for maintaining the current collecting line is more reasonably planned, and the working efficiency is better improved.

Drawings

Fig. 1 is a flowchart of a first embodiment of a method for processing a fault early warning of a collecting line of a wind farm according to the present invention;

fig. 2 is a flowchart of a wind farm collecting line fault early warning processing method according to a second embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a fault early warning processing system for a collecting line of a wind farm provided by the present invention;

FIG. 4 is a schematic diagram of a routing inspection path according to the present invention;

fig. 5 is a schematic diagram of a hardware structure of an electronic device according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so worked may be interchanged under appropriate circumstances such that embodiments of the invention described herein may be implemented in sequences other than those illustrated or described herein.

It should be understood that, in the various embodiments of the present invention, the sequence numbers of the processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

It should be understood that in the present application, "comprising" and "having" and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that, in the present invention, "a plurality" means two or more. "and/or" is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "comprising a, B and C", "comprising a, B, C" means that all three of a, B, C are comprised, "comprising a, B or C" means comprising one of a, B, C, "comprising a, B and/or C" means comprising any 1 or any 2 or 3 of a, B, C.

It should be understood that in the present invention, "B corresponding to a", "a corresponds to B", or "B corresponds to a" means that B is associated with a, and B can be determined from a. Determining B from a does not mean determining B from a alone, but may be determined from a and/or other information. And the matching of A and B means that the similarity of A and B is greater than or equal to a preset threshold value.

"if," as operated herein, may be interpreted as "at" \8230; "or" when 8230; \8230; "or" in response to a determination "or" in response to a detection, "depending on the context.

The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of corresponding or similar concepts or processes may not be repeated in some embodiments.

The invention provides a fault early warning processing method for a wind power plant collecting line, which comprises the following steps of:

step S110, acquiring a first historical power of each wind power device and a second historical power of the booster station in a corresponding historical time period of the wind power plant under different wind speed information, and calculating according to the first historical power and the second historical power to obtain a pre-stored line loss value.

According to the technical scheme provided by the invention, the system can acquire the generated power (first historical power) of each wind power device in the corresponding time period of the wind power plant under different wind speeds and the total power (second historical power) before being transmitted to the booster station through the current collecting circuit for boosting, and the pre-stored line loss value is obtained by calculating according to the generated power of each wind power device, the number of the wind power devices in the wind power plant and the second historical power, so that the standard line loss interval under the corresponding wind speed can be conveniently calculated according to the pre-stored line loss value.

In a possible implementation manner of the technical solution provided by the present invention, step S110 specifically includes:

the method comprises the steps of obtaining first historical power of each wind power device and second historical power of a booster station in corresponding historical time periods of a wind power plant under different wind speed information.

According to the technical scheme provided by the invention, the system can acquire the first historical power of each wind power device in the corresponding historical time period of the wind power plant under different wind speed information and the second historical power for transmitting the electric power of all the wind power devices to the booster station, wherein the first historical power and the second historical power can detect the voltage and the current of the wind power devices and the voltage and the current before boosting at the booster station through the voltage sensor and the current sensor, and the corresponding power can be obtained through calculation, so that the corresponding line loss value can be conveniently obtained through the subsequent difference calculation according to the total power of the wind power devices and the historical total power.

Calculating according to first historical powers of all wind power equipment of the wind power plant to obtain a first historical total power, and obtaining a line loss value under a normal working condition according to a difference value of the first historical total power and the second historical power.

According to the technical scheme provided by the invention, a first historical total power is obtained according to the product of the first historical power of all power generation equipment of a wind power plant and the number of all wind power equipment of the wind power plant, and a line loss value under a normal working condition is obtained according to the difference value of the first historical total power and the second historical power, so that the generation initial power (the first historical total power) of power generation is obtained by the product of the generation power of each wind power equipment and the number of the wind power equipment, the current is converged to a booster station by a current collection circuit to carry out boosting and grid connection, the second historical power before boosting is obtained at the moment, and the line loss value under the normal working condition is obtained by subtracting the first historical total power and the second historical power, for example: the power generation power (first historical power) of each wind power device corresponding to a wind speed of 4m/s is 120kW, the number of the wind power devices is 20, the corresponding first historical total power is 2400kW, and the power generation power at the booster station is 2300kW, so that the line loss value under the normal working condition is 100kW, which facilitates the subsequent calculation according to the historical line loss value under the normal working condition to obtain the standard line loss interval corresponding to the current time, wherein the historical time period may also be 30% at 7/1/9 at 2021 to 30% at 7/3/9 at 2021/7, which is not limited herein, and for convenience of understanding, only by way of example.

And determining the line loss values of different wind speed information as corresponding pre-stored line loss values.

According to the technical scheme provided by the invention, the line loss value under the normal working condition under different wind speed information is taken as the pre-stored line loss value, and it can be understood that the line loss value under the historical normal working condition is taken as the pre-stored line loss value, for example: the line loss value corresponding to the wind speed of 4m/s is 100kW and serves as a pre-stored line loss value from 1/7/2021 to 3/7/2021, wherein the pre-stored line loss value is a line loss value under normal operation, and may be a line loss value just established in a fixed time period of the wind farm, and the fixed time may be 3 months or 5 months, which is not limited herein.

And step S120, calculating according to the historical time period and the current time corresponding to the pre-stored line loss value to obtain a first current standard line loss interval, and displaying the first current standard line loss interval.

According to the technical scheme provided by the invention, the first current standard line loss interval is obtained by calculating according to the historical time period and the current time corresponding to the pre-stored line loss value, and it can be understood that the larger the difference value between the current time and the historical time is, the longer the difference time is, the larger the corresponding line loss is, the first current standard line loss interval is obtained by calculating the using time length and the pre-stored line loss value, and the first current standard line loss interval is displayed.

In a possible implementation manner of the technical solution provided by the present invention, step S120 specifically includes:

and acquiring a historical time period corresponding to the pre-stored line loss value, determining a historical intermediate time of the historical time period, and calculating according to the historical intermediate time and the current time to obtain a time offset coefficient.

According to the technical scheme provided by the invention, the historical time period corresponding to the pre-stored line loss value is obtained, for example: and calculating from 1/7/2021/7/3/2021/7/2 at the middle time 2021/7/10 at the current time 2021/7/3 in the historical time period to obtain a time offset coefficient.

wherein,

is the maximum value of the first current standard line loss interval,

in order to pre-store the line loss value,

is the current time of day and is,

for the middle of the time in the history,

is a value of a time constant, and,

in order to normalize the value for the time,

in order to float the error value(s),

is the minimum value of the first current standard line loss interval,

as a coefficient of the minimum value of the first current standard line loss interval, it can be understood that，

Is the difference between the current time and the historical intermediate time, and the difference between the current time and the historical intermediate time

Maximum value of line loss interval with first current standard

Proportional, difference between current time and historical intermediate time

Minimum value of the interval of the first current standard line loss

Is proportional, wherein the floating error value

The allowable error range can be understood as follows: if the floating rate is 10%, the error of allowing floating is 110%, and the error of allowing floating is 90%, which can be preset manually.

According to the technical scheme provided by the invention, the time offset coefficient can be calculated and generated according to the current time and the middle time of the historical time period, the larger the time offset coefficient is, the longer the service time of the corresponding wind power plant is, the larger the aging or loss of the corresponding insulator and line is, and the larger the corresponding power loss is, the corresponding standard line loss interval is generated through calculation according to the time offset coefficient and the pre-stored line loss value, so that the current line loss and the standard line loss interval can be conveniently compared in the follow-up process, and the current collection line corresponding to the damaged wind electric field area can be positioned.

According to the technical scheme provided by the invention, the first current standard line loss interval is generated according to the maximum value of the first current standard line loss interval and the minimum value of the first current standard line loss interval, and it can be understood that the current standard line loss interval is generated according to the maximum value and the minimum value of the current standard line loss interval.

In a possible embodiment, the technical solution provided by the present invention further includes:

and acquiring the total length of the power collecting line in the wind power plant, and acquiring a length deviation coefficient according to the total length of the power collecting line.

According to the technical scheme provided by the invention, the system can acquire the total length of the power collecting line in the wind power plant, and it can be understood that the longer the total length of the power collecting line is, the larger the relative line loss value is, the length offset coefficient is obtained by calculating according to the total length of the power collecting line and the preset length, and the simultaneous offset processing is conveniently carried out through the length offset coefficient and the time offset coefficient in the following process to obtain the maximum value of the first current standard line loss interval and the minimum value of the first current standard line loss interval.

And calculating according to the length offset coefficient, the time offset coefficient and a pre-stored line loss value to obtain a maximum value of a first current standard line loss interval and a minimum value of the first current standard line loss interval.

According to the technical scheme provided by the invention, the pre-stored line loss value is subjected to offset processing simultaneously according to the length offset coefficient, the time offset coefficient and the floating error value to obtain the maximum value of the first current standard line loss interval and the minimum value of the first current standard line loss interval.

wherein,

is the maximum value of the first current standard line loss interval,

in order to pre-store the line loss value,

as the total length of the current collecting line,

for a predetermined length of the current collecting line,

is a value of a length constant that is,

is a value for the length normalization,

as the current time of day, the time of day,

is a historical intermediate time, is a time constant value,

is a value that is normalized for the time,

in order to float the error value(s),

is the minimum value of the first current standard line loss interval,

coefficient, length constant value of the minimum value of the first current standard line loss interval

And a time constant value

The time interval can be set manually in advance, and the time is uniformly converted into seconds because the detection time interval can be 1 month or 2 months, so that the time constant value is common

Greater than a length constant value

Wherein, in the process,

in order to be a length-offset factor,

maximum value of the first current standard line loss interval as time offset coefficient

Coefficient of deviation from length

Proportional, maximum value of the first current standard line loss interval

And time offset coefficient

Proportional, wherein the time is normalized

And length normalization value

May be preset manually.

According to the technical scheme provided by the invention, the influence of time and length dimensions on the line loss is considered at the same time, so that the maximum value of the first current standard line loss interval and the minimum value of the first current standard line loss interval corresponding to the current moment are calculated according to the historical normal use line loss value (pre-stored line loss value), the first current standard line loss interval is obtained, the subsequent comparison with the current line loss value is facilitated, and the fault current collecting line or the normal current collecting line is accurately distinguished.

Step S130, monitoring the user behavior, and if it is determined that the user actively inputs the second current standard line loss interval, changing the first current standard line loss interval into the second current standard line loss interval.

According to the technical scheme provided by the invention, the system can actively monitor the user behavior, if the user is judged to actively input the second current standard line loss interval, it can be understood that the user finds that the first current standard line loss interval calculated by the system has errors in the actual operation process, the second current standard line loss interval is actively input, the second current standard line loss interval actively input by the user is actively recorded by the system, and the coefficient of the maximum value of the first current standard line loss interval and the coefficient of the minimum value of the first current standard line loss interval are adjusted, so that the standard line loss interval calculated next time is more accurate and more suitable for a scene.

In a possible implementation manner of the technical solution provided by the present invention, step S130 specifically includes:

and monitoring user behaviors, and if judging that a user actively inputs a second current standard line loss interval, obtaining a first difference value according to the difference value between the maximum value of the second current standard line loss interval and the maximum value of a first current standard line loss interval.

According to the technical scheme provided by the invention, the system can monitor the user behavior, if the fact that the user actively inputs the second current standard line loss interval is judged, the difference value between the maximum value of the second current standard line loss interval and the maximum value of the first current standard line loss interval is obtained to obtain the first difference value, the offset adjustment of the coefficient of the maximum value of the first current standard line loss interval according to the first difference value is facilitated, and the maximum value of the first current standard line loss interval calculated next time is enabled to be more accurate.

And obtaining a second difference value according to the difference value between the minimum value of the second current standard line loss interval and the minimum value of the first current standard line loss interval.

According to the technical scheme provided by the invention, the second difference value is obtained according to the difference value between the minimum value of the second current standard line loss interval and the minimum value of the first current standard line loss interval, so that the offset adjustment of the coefficient of the minimum value of the first current standard line loss interval is facilitated according to the second difference value, and the calculated minimum value of the first current standard line loss interval at the next time is relatively accurate.

And respectively adjusting the coefficient of the maximum value of the first current standard line loss interval and the coefficient of the minimum value of the first current standard line loss interval according to the first difference and the second difference to obtain the coefficient of the maximum value of the second current standard line loss interval and the coefficient of the minimum value of the second current standard line loss interval.

According to the technical scheme provided by the invention, the coefficient of the maximum value of the first current standard line loss interval and the coefficient of the minimum value of the first current standard line loss interval are respectively subjected to offset adjustment according to the first difference and the second difference, and it can be understood that if the minimum value of the second current standard line loss interval actively input by a user is smaller than the minimum value of the first current standard line loss interval, the coefficient of the minimum value of the first current standard line loss interval is adjusted to be smaller, and if the minimum value of the second current standard line loss interval actively input by the user is larger than the minimum value of the first current standard line loss interval, the coefficient of the minimum value of the first current standard line loss interval is adjusted to be larger, and the adjustment mode of the coefficient of the maximum value of the first current standard line loss interval is the same, and the system has an autonomous learning function and can carry out active adjustment according to the behavior of the user, so that the final output result is more fit to the actual scene.

wherein,

is the maximum value of the second current standard line loss interval,

the adjustment value is reduced for the line loss,

is the minimum value of the second current standard line loss interval,

an adjustment value is added to the line loss,

a coefficient which is the minimum value of the second current standard line loss interval, mayIn order to be understood that,

and

in the inverse proportion,

and

in a direct proportion to the total weight of the composition,

and

in the inverse proportion,

and with

Is in direct proportion.

According to the technical scheme provided by the invention, the system can actively record and learn the data actively input by the user, and the next calculation is calibrated through the data actively input by the user, so that the output result is more suitable for the actual situation, and the system has an autonomous regulation learning function.

Step S140, under the current wind speed information of the wind power plant, a first current power of each wind power device and a second current power of the booster station are obtained, calculation is carried out according to the first current powers of all power generation devices of the wind power plant to obtain a first current total power, and a current line loss value is determined according to a difference value of the first current total power and the second current power.

According to the technical scheme provided by the invention, a system can acquire the first current power of each wind power device and the second current power of a booster station under the current wind speed information of a wind power plant, wherein the second current power of the booster station is the total power of the sum of the first current powers of all the wind power devices transmitted to the booster station through a collecting line before boosting, it can be understood that the second current power of the booster station is the power with loss through the collecting line, the first current powers of all the power generation devices of the wind power plant are calculated to obtain the first current total power, and the current line loss value is determined according to the difference value of the first current total power and the second current power, for example: the first current power is 110kW, which is 10 power generation devices in total, the first current total power is 1100kW, 1000kW at the booster station, and the current line loss value is 100kW, where the first current power may be 110kW or 210kW, and the specific size is determined by the current wind speed, which is not limited herein.

Step S150, if it is judged that pre-stored wind speed information corresponding to the current wind speed information exists, comparing the current line loss value with a second current standard line loss interval or a first current standard line loss interval of the corresponding pre-stored wind speed information to obtain a first fault early warning result.

According to the technical scheme provided by the invention, if the pre-stored wind speed information corresponding to the current wind speed information is judged to exist, it can be understood that, if the current wind speed information is 4m/s and the condition that the pre-stored wind speed information is 4m/s exists in a historical time period, the current line loss value is compared with a second current standard line loss interval or a first current standard line loss interval of the corresponding pre-stored wind speed information, it can be understood that, if the pre-stored wind speed information same as the current wind speed information exists, a second current standard line loss interval is obtained by calculation according to the pre-stored line loss value corresponding to the stored wind speed information, and a first fault early warning result is obtained.

In a possible implementation manner of the technical solution provided by the present invention, step S150 specifically includes:

and if the wind speed information corresponding to the current wind speed information exists and the current line loss value is not in a second current standard line loss interval of the corresponding historical wind speed information, marking the current collecting line of the wind power plant as a fault line.

According to the technical scheme provided by the invention, if the wind speed information corresponding to the current wind speed information is judged to exist, and the current line loss value is not in the second current standard line loss interval of the corresponding historical wind speed information, it can be understood that the current line loss value is not in the second current standard line loss interval, which indicates that the line loss is possibly too large, and the line may have a fault, for example: the current collecting line is subject to ice catching or breakage due to external force, which leads to increased loss.

According to the technical scheme provided by the invention, if the pre-stored wind speed information corresponding to the current wind speed information is judged to exist, and the current line loss value is in the second current standard line loss interval of the corresponding pre-stored wind speed information, the collector wire of the wind power plant is marked as the normal line, and it can be understood that the collector wire of the wind power plant is marked as the normal line if the current line loss value is in the second current standard line loss interval, which indicates that the collector wire is in the normal loss range at the moment, so that the normal collector wire and the failed collector wire can be more accurately positioned.

Step S160, if it is determined that there is no pre-stored wind speed information corresponding to the current wind speed information, performing ascending sorting on all the pre-stored wind speed information to generate a pre-stored wind speed sequence, generating a third current standard line loss interval according to the current wind speed information and the pre-stored wind speed sequence, and comparing the current line loss value with the third current standard line loss interval to obtain a second fault early warning result.

According to the technical scheme provided by the invention, if the condition that the pre-stored wind speed information corresponding to the current wind speed information does not exist is judged, for example: the current wind speed information is 5m/s, the pre-stored wind speed information is only 4m/s and 6m/s, the pre-stored wind speed information is sorted in an ascending order to generate a pre-stored wind speed sequence, it can be understood that the pre-stored wind speed information is sorted from small to large to generate a pre-stored wind speed sequence, a third current standard line loss interval is generated according to the current wind speed information and the wind speed information which is in the previous position of the current wind speed information and the wind speed information which is in the next position of the current wind speed information in the pre-stored wind speed sequence, and the current line loss value is compared with the third current standard line loss interval to obtain a second fault early warning result, so that a user can conveniently and accurately position a fault and a normal wind power station current collecting circuit.

In a possible embodiment of the technical solution provided by the present invention, as shown in fig. 2, step S160 specifically includes:

step S1601, if it is judged that the pre-stored wind speed information corresponding to the current wind speed information does not exist, the pre-stored wind speed information is sorted in an ascending order to generate a pre-stored wind speed sequence.

According to the technical scheme provided by the invention, if the wind speed information corresponding to the current wind speed information does not exist, the pre-stored wind speed information is sorted in an ascending order to generate the pre-stored wind speed sequence, and it can be understood that if the wind speed information identical to the current wind speed information does not exist in the historical wind speed information (pre-stored wind speed information), the pre-stored wind speed information is sorted in an ascending order to generate the pre-stored wind speed sequence, so that the pre-stored wind speed information which is one bit before the current wind speed information and the pre-stored wind speed information which is one bit after the current wind speed information can be conveniently selected in a follow-up manner.

Step S1602, extracting the pre-stored wind speed information one bit before and one bit after the current wind speed information from the pre-stored wind speed sequence to obtain the first wind speed information and the second wind speed information.

According to the technical scheme provided by the invention, the first pre-stored wind speed information and the second pre-stored wind speed information which are positioned at the front and the back of the current wind speed information are extracted from the pre-stored wind speed sequence to obtain the first wind speed information and the second wind speed information, for example: the current wind speed information is 5m/s, 4m/s (first wind speed information) and 6m/s (second wind speed information) are extracted from a pre-stored wind speed sequence, and the standard loss interval with the current wind speed information of 5m/s can be conveniently obtained through calculation according to loss values corresponding to the first wind speed information and the second wind speed information.

Step S1603, calculating according to a pre-stored line loss value corresponding to the first wind speed information, a pre-stored line loss value corresponding to the second wind speed information, and a preset attenuation interval to obtain a third current standard line loss interval.

According to the technical scheme provided by the invention, the system can calculate according to the pre-stored line loss value corresponding to the first wind speed information, the pre-stored line loss value corresponding to the second wind speed information and the preset attenuation interval, and it can be understood that as the wind speed increases, the power increases, the corresponding current increases, and under the condition that the resistance value of the current collecting circuit is fixed, the line loss increases and increases exponentially, so that the corresponding preset attenuation interval can be obtained, and the preset attenuation interval can be 90% -130%, and is not limited herein.

In a possible embodiment, the calculating according to a pre-stored line loss value corresponding to the first wind speed information, a pre-stored line loss value corresponding to the second wind speed information, and a preset attenuation interval to obtain a third current standard line loss interval includes:

and obtaining an intermediate loss value according to the average value of the pre-stored line loss value corresponding to the second wind speed information and the pre-stored line loss value corresponding to the first wind speed information.

According to the technical scheme provided by the invention, according to the average value of the pre-stored line loss value corresponding to the second wind speed information and the pre-stored line loss value corresponding to the first wind speed information, it can be understood that, because the current wind speed information is between the first wind speed information and the second wind speed information, the average value of the pre-stored line loss value corresponding to the second wind speed information and the pre-stored line loss value corresponding to the first wind speed information is firstly obtained to obtain an intermediate loss value, and the maximum value of a third current standard line loss interval and the minimum value of the third current standard line loss interval are conveniently obtained according to the product of the intermediate loss value and a preset attenuation interval in the subsequent process.

And obtaining the maximum value of the third current standard line loss interval and the minimum value of the third current standard line loss interval according to the product of the intermediate loss value and the preset attenuation interval.

According to the technical scheme provided by the invention, the system can obtain the maximum value of the third current standard line loss interval and the minimum value of the third current standard line loss interval according to the product of the intermediate loss value and the preset attenuation interval, wherein the preset attenuation interval can be preset and artificially set according to different wind speeds because the corresponding attenuation value exponentially increases along with the increase of the wind speed.

Calculating the maximum value of the third current standard line loss interval and the minimum value of the third current standard line loss interval by the following formulas,

wherein,

is the maximum value of the third current standard line loss interval,

is the maximum value of the preset attenuation interval,

is the minimum value of the preset attenuation interval,

is the minimum value of the third current standard line loss interval,

for the value of the intermediate loss, it can be understood that the value of the intermediate loss is

Maximum value of interval of line loss of third current standard

Proportional, intermediate loss value

Minimum value of interval of line loss of third current standard

Proportional, wherein the maximum value of the attenuation interval is preset

>Minimum value of preset attenuation interval

。

According to the technical scheme provided by the invention, the system can generate the third current standard line loss interval according to the maximum value of the third current standard line loss interval and the minimum value of the third current standard line loss interval, so that the comparison between the current line loss value and the third current standard line loss interval is convenient to carry out subsequently, and a fault current collection circuit or a normal current collection circuit can be well confirmed.

And step S1604, if the current line loss value is not in the third current standard line loss interval, marking the collecting line of the wind power plant as a fault line.

According to the technical scheme provided by the invention, if the current line loss value is not in the third current standard line loss interval, the line loss value of the current collection line is over-large at the moment, for example: and (3) the total power reduction caused by the branch line fracture of the current collection line, or no loss of the current collection line, no current of the line caused by the total current collection line fracture, no loss and too small loss, and marking the current collection line of the wind power plant as a fault line.

And step S1605, if the current line loss value is within the third current standard line loss interval, the collector wire of the wind power plant is marked as a normal line.

According to the technical scheme provided by the invention, if the current line loss value is in the third current standard line loss interval, the collector wire of the wind power plant is marked as a normal line, and it can be understood that if the current line loss value is in the normal loss interval, the collector wire of the wind power plant is considered as a normal line.

and obtaining current line loss values of the plurality of wind power plants and a second current standard line loss interval or a third current standard line loss interval corresponding to the current wind speed information.

According to the technical scheme provided by the invention, the current line loss values of a plurality of wind power plants and the second current standard line loss interval or the third current standard line loss interval corresponding to the current wind speed information are obtained, the subsequent difference value calculation is convenient, the corresponding loss degree value is obtained, and a user can arrange an engineer to maintain and overhaul according to the loss degree of the current collection circuit.

And obtaining a loss degree value according to the maximum value of the second current standard line loss interval or the difference value between the maximum value of the third current standard line loss interval and the current line loss value corresponding to the current wind speed information.

According to the technical scheme provided by the invention, the loss degree value is obtained according to the maximum value of the second current standard line loss interval or the difference value between the maximum value of the third current standard line loss interval and the current line loss value corresponding to the current wind speed information, it can be understood that only the faulted current collecting line, namely the current collecting line with the overlarge loss rate can be selected for maintenance, if the prestored wind speed information same as the current wind speed information exists, the loss degree value is obtained according to the difference value between the maximum value of the second current standard line loss interval and the current line loss value, and if the prestored wind speed information same as the current wind speed information does not exist, the loss degree value is obtained according to the difference value between the maximum value of the third current standard line loss interval and the current line loss value, so that the maintenance sequence can be conveniently generated by sorting according to the loss degree values.

And sequencing a plurality of wind power plants in a descending order based on the loss degree value to obtain a fault sequence, wherein the wind power plants have numbers which are preset correspondingly.

According to the technical scheme provided by the invention, the wind power plants are sorted in a descending order based on the loss degree value to obtain the fault sequence, and it can be understood that the number loss degree of the wind power plant positioned in front of the fault sequence is the most serious, so that the follow-up preferential maintenance is convenient to be carried out according to the severity degree, and the power recovery speed is higher.

Selecting a first fault node in the fault sequence as an inspection starting point of the inspection path, constructing a first area based on first position information of the inspection starting point as a center, selecting all first fault nodes positioned in the first area in the fault sequence, and sequentially connecting the corresponding first fault nodes according to a position relation with the inspection starting point to obtain a first inspection intermediate point of the inspection path.

According to the technical scheme provided by the invention, a system can automatically select a first fault node in a fault sequence as an inspection starting point of an inspection path, and can understand that the fault node with the highest damage degree can be selected as the inspection starting point of the inspection path, a first area is constructed by taking first position information of the inspection starting point as a center, wherein the first position information can be geographical position information of the inspection starting point and can be longitude and latitude information, the first area is not limited, the first position information is taken as the center, a preset distance is taken as a radius, all first fault nodes positioned in the first area in the fault sequence are selected, the first fault nodes are sequentially connected according to the positions of the inspection starting points to obtain a first middle point of the inspection path, the first fault nodes are sequentially connected according to the positions of the inspection starting points, the first fault nodes can be sequentially connected from near to far from the inspection starting points according to the positions of the inspection starting points, and the inspection efficiency of a maintenance person who inspects the wind field with the highest damage degree is better.

Deleting all first fault nodes in the first area from the fault sequence, selecting the first fault node in the fault sequence as a second inspection intermediate point of the inspection path again, and connecting the second inspection intermediate point with the last first inspection intermediate point in the previously obtained inspection path.

According to the technical scheme provided by the invention, all first fault nodes in the first area are deleted from the fault sequence, and it can be understood that all first fault nodes in the first area are the first-time repaired area, and a user can repair a nearby wind power plant which is close in distance and also needs to be repaired while repairing a current collecting circuit of the wind power plant with the highest loss degree, so that the repair efficiency is improved.

And constructing a second area based on the second position information of the second inspection intermediate point as a center, selecting all second fault nodes positioned in the second area in the fault sequence again as third inspection intermediate points, and connecting the third inspection intermediate points with the second inspection intermediate points.

According to the technical scheme provided by the invention, the system can construct the second area based on the second position information of the second inspection intermediate point as the center, similarly, the system can construct the second area by taking the longitude and latitude information and the preset distance of the second inspection intermediate point as the radius, then all second fault nodes in the second area in the fault sequence are selected again to serve as the third inspection intermediate point, and the third inspection intermediate point and the second inspection intermediate point are sequentially connected from near to far to generate the connection path of the intermediate point.

According to the technical scheme provided by the invention, as shown in fig. 3, the first fault node in the fault sequence is selected again, and the step of obtaining the second inspection intermediate point or the third inspection intermediate point is repeated, wherein the step of obtaining the second inspection intermediate point or the third inspection intermediate point is understood to be that the intermediate fault nodes are repeatedly obtained to be connected to generate the maintenance path until only one fault node is left in the fault sequence, at the moment, the corresponding fault node is taken as the inspection end point, and the inspection end point is connected with the second inspection intermediate point or the third inspection intermediate point in the inspection path to generate a complete maintenance path; it can be understood that the wind farm numbers of all the first fault nodes in the first area are equal to all the wind farm numbers in the fault sequence, and then the corresponding first fault nodes are directly connected in sequence according to the position relation with the patrol starting point to obtain the patrol route, or the second patrol intermediate point is the patrol terminal point, and then the second patrol intermediate point is directly connected with the last first patrol intermediate point to generate the patrol route, and no limitation is made herein.

In order to better implement the method provided by the present invention, the present invention further provides a wind farm collecting line fault early warning processing system, as shown in fig. 4, including:

the second calculation module is used for acquiring the first current power of each wind power device and the second current power of the booster station under the current wind speed information of the wind power plant, calculating according to the first current powers of all power generation devices of the wind power plant to obtain a first current total power, and determining a current line loss value according to the difference value of the first current total power and the second current power;

As shown in fig. 5, which is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention, the electronic device 50 includes: a processor 51, a memory 52 and computer programs; wherein

A memory 52 for storing the computer program, which may also be a flash memory (flash). The computer program is, for example, an application program, a functional module, or the like that implements the above method.

A processor 51 for executing the computer program stored in the memory to implement the steps performed by the apparatus in the above method. Reference may be made in particular to the description relating to the preceding method embodiment.

Alternatively, the memory 52 may be separate or integrated with the processor 51.

When the memory 52 is a device independent of the processor 51, the apparatus may further include:

a bus 53 for connecting the memory 52 and the processor 51.

The present invention also provides a readable storage medium, in which a computer program is stored, which, when being executed by a processor, is adapted to implement the methods provided by the various embodiments described above.

The readable storage medium may be a computer storage medium or a communication medium. Communication media includes any medium that facilitates transfer of a computer program from one place to another. Computer storage media can be any available media that can be accessed by a general purpose or special purpose computer. For example, a readable storage medium is coupled to the processor such that the processor can read information from, and write information to, the readable storage medium. Of course, the readable storage medium may also be an integral part of the processor. The processor and the readable storage medium may reside in an Application Specific Integrated Circuits (ASIC). Additionally, the ASIC may reside in user equipment. Of course, the processor and the readable storage medium may also reside as discrete components in a communication device. The readable storage medium may be a read-only memory (ROM), a random-access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

The present invention also provides a program product comprising executable instructions stored on a readable storage medium. The at least one processor of the device may read the execution instructions from the readable storage medium, and the execution of the execution instructions by the at least one processor causes the device to implement the methods provided by the various embodiments described above.

In the above embodiments of the apparatus, it should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A fault early warning processing method for a wind power plant collecting line is characterized by comprising the following steps:

calculating according to the historical time period and the current time corresponding to the pre-stored line loss value to obtain a first current standard line loss interval, and displaying the first current standard line loss interval;

if judging that pre-stored wind speed information corresponding to the current wind speed information exists, comparing the current line loss value with a second current standard line loss interval or a first current standard line loss interval of the corresponding pre-stored wind speed information to obtain a first fault early warning result;

and if judging that the pre-stored wind speed information corresponding to the current wind speed information does not exist, performing ascending sorting on all the pre-stored wind speed information to generate a pre-stored wind speed sequence, generating a third current standard line loss interval according to the current wind speed information and the pre-stored wind speed sequence, and comparing the current line loss value with the third current standard line loss interval to obtain a second fault early warning result.

2. The method of claim 1,

the method for acquiring the first historical power of each wind power device and the second historical power of the booster station in the corresponding historical time period under different wind speed information of the wind power plant, and calculating according to the first historical power and the second historical power to obtain a pre-stored line loss value comprises the following steps:

calculating according to first historical power of all wind power equipment of a wind power plant to obtain first historical total power, and obtaining a line loss value under a normal working condition according to a difference value of the first historical total power and the second historical power;

3. The method of claim 2,

calculating according to the historical time period and the current moment corresponding to the pre-stored line loss value to obtain a first current standard line loss interval, and displaying the first current standard line loss interval, including:

wherein,

is the maximum value of the first current standard line loss interval,

the coefficient being the maximum value of the first current standard line loss interval,

in order to pre-store the line loss value,

is the current time of day and is,

for the middle of the time in the history,

is a value of a time constant, and,

in order to normalize the value for the time,

in order to float the error value,

is the minimum value of the first current standard line loss interval,

4. The method of claim 2, further comprising:

calculating the maximum value of the first current standard line loss interval and the minimum value of the first current standard line loss interval by the following formula,

wherein,

is the maximum value of the first current standard line loss interval,

in order to pre-store the line loss value,

as the total length of the current collecting line,

for a predetermined length of the current collecting line,

is a value of a length constant, and,

is a value normalized for the length of the sample,

as the current time of day, the time of day,

for the middle of the time in the history,

is a value of a time constant, and,

in order to normalize the value for the time,

in order to float the error value,

is the minimum value of the first current standard line loss interval,

5. The method according to any one of claims 3 or 4,

monitoring user's action, if judge that the user initiatively inputs the current standard line loss interval of second, then change the current standard line loss interval of first current into the current standard line loss interval of second, include:

wherein,

is the maximum value of the second current standard line loss interval,

the adjustment value is reduced for the line loss,

is the minimum value of the second current standard line loss interval,

an adjustment value is added to the line loss,

and the coefficient is the minimum value of the second current standard line loss interval.

6. The method of claim 5,

if it is determined that pre-stored wind speed information corresponding to the current wind speed information exists, comparing the current line loss value with a second current standard line loss interval or a first current standard line loss interval of the corresponding pre-stored wind speed information to obtain a first fault early warning result, including:

if the pre-stored wind speed information corresponding to the current wind speed information exists and the current line loss value is not in a second current standard line loss interval or a first current standard line loss interval of the corresponding pre-stored wind speed information, marking a current collecting line of the wind power plant as a fault line;

and if the pre-stored wind speed information corresponding to the current wind speed information exists and the current line loss value is in a second current standard line loss interval or a first current standard line loss interval of the corresponding pre-stored wind speed information, marking the collector wire of the wind power plant as a normal line.

7. The method of claim 6,

if it is determined that there is no pre-stored wind speed information corresponding to the current wind speed information, performing ascending sorting on all the pre-stored wind speed information to generate a pre-stored wind speed sequence, generating a third current standard line loss interval according to the current wind speed information and the pre-stored wind speed sequence, and comparing the current line loss value with the third current standard line loss interval to obtain a second fault early warning result, including:

if judging that the pre-stored wind speed information corresponding to the current wind speed information does not exist, performing ascending sorting on the pre-stored wind speed information to generate a pre-stored wind speed sequence;

and if the current line loss value is within a third current standard line loss interval, marking the current collection line of the wind power plant as a normal line.

8. The method of claim 7,

calculating according to a pre-stored line loss value corresponding to the first wind speed information, a pre-stored line loss value corresponding to the second wind speed information and a preset attenuation interval to obtain a third current standard line loss interval, including:

obtaining an intermediate loss value according to an average value of a pre-stored line loss value corresponding to the second wind speed information and a pre-stored line loss value corresponding to the first wind speed information;

obtaining a maximum value of a third current standard line loss interval and a minimum value of the third current standard line loss interval according to the product of the intermediate loss value and a preset attenuation interval;

wherein,

is the maximum value of the third current standard line loss interval,

is the maximum value of the preset attenuation interval,

is the minimum value of the preset attenuation interval,

the minimum value of the third current standard line loss interval is obtained;

9. The method of claim 8, further comprising:

acquiring current line loss values of a plurality of wind power plants and a second current standard line loss interval or a first current standard line loss interval or a third current standard line loss interval corresponding to current wind speed information;

obtaining a loss degree value according to the difference value between the second current standard line loss interval or the maximum value of the first current standard line loss interval or the maximum value of the third current standard line loss interval and the current line loss value corresponding to the current wind speed information;

10. The utility model provides a wind-powered electricity generation field collection circuit trouble early warning processing system which characterized in that includes: