CN115480126A - Detection device setting method and system based on Frechet algorithm, computer equipment and medium - Google Patents
Detection device setting method and system based on Frechet algorithm, computer equipment and medium Download PDFInfo
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Abstract
The invention discloses a detection device setting method, a detection device setting system, computer equipment and a medium based on a Frechet algorithm, wherein the distance between overvoltage detection devices is calculated by using a Frechet distance calculation method, and the optimal distance set between the overvoltage detection devices is accurately calculated by using a preset setting value to judge whether the distance setting is proper.
Description
Technical Field
The present invention relates to circuit detection, and in particular, to a method and a system for setting a detection apparatus based on a frechet algorithm, a computer device, and a medium.
Background
The power industry is an important component of national economy, the power distribution network is an important component of a power system, the power distribution network directly supplies power to users, and the power distribution network has the characteristics of wide distribution and more devices;
at present, research on online detection of overvoltage of a power distribution network mainly focuses on development of an online detection device, and the arrangement problem of the online detection device needs to be researched in practical engineering application. In an actual engineering situation, the problem that the number of overvoltage on-line detection devices which are put into a power distribution network due to numerous power distribution network lines is insufficient due to the fact that the number of overvoltage on-line detection devices is too large, the number of overvoltage on-line detection devices is insufficient due to the fact that the number of overvoltage on-line detection devices is too large, and the like can occur, and therefore how to reasonably calculate the arrangement distance between the overvoltage on-line detection devices is a problem which needs to be solved urgently.
Disclosure of Invention
In view of the above, it is necessary to provide a detection device installation method, a detection device installation system, a computer device, and a medium based on the frechet algorithm, which can reasonably estimate the installation distance between the overvoltage on-line detection devices.
A detection device setting method based on a Frechet algorithm comprises a protection circuit and a plurality of overvoltage detection devices, and the method comprises the following steps:
setting an ith overvoltage detection device on the protection circuit, wherein the initial value of i is 2, the 1 st overvoltage detection device is already arranged at the starting point of the protection circuit, the first distance between the setting position of the ith overvoltage detection device and the starting point is greater than the second distance between the setting position of the i-1 st overvoltage detection device and the starting point, and the difference value between the first distance and the second distance is the preset distance preset by a user;
performing a Frchet distance calculating step to calculate a first distance value F between a first voltage sampling point acquired by the i-1 th overvoltage detection device and a second voltage sampling point acquired by the i-th overvoltage detection device when an overvoltage condition occurs ij1 ；
Judging the first distance value F ij1 Whether to be equal to a preset setting value F set Matching;
if so, judging that the setting position of the ith overvoltage detection device is reasonable, and returning to the step of setting the ith overvoltage detection device on the protection circuit after i = i +1 until the setting of all the overvoltage detection devices on the protection circuit is finished;
if not, adjusting the position of the ith overvoltage detection device on the protection circuit, and returning to execute the Frechet distance estimation step.
Further, the frechet distance calculating step specifically includes:
acquiring a preset reference coordinate system, wherein the horizontal axis of the reference coordinate system is voltage acquisition time, and the horizontal axis is a voltage acquisition numerical value;
connecting a preset fault point to the ith-1 overvoltage detection device and the ith overvoltage detection device for overvoltage test, so as to obtain a voltage sampling track A of the ith-1 overvoltage detection device on the preset reference coordinate system and a voltage sampling track B of the ith overvoltage detection device on the preset reference coordinate system;
the voltage sampling track A comprises a plurality of first voltage sampling points alpha x The voltage sampling track B comprises a plurality of second voltage sampling points beta γ The x and the gamma correspond to the voltage acquisition time on the horizontal axis of the reference coordinate system;
obtaining the first voltage sampling point alpha x And the second voltage sampling point beta γ And said coordinate distance is also denoted as (alpha) x ，β γ )；
According to the coordinate distance (alpha) x ，β γ ) Generating a distance matrix D AB The distance matrix collectively D AB The concrete embodiment is as follows:
according to the distance matrix D AB Estimating a distance value F of the voltage sampling point between the first estimation device and the second estimation device ij 。
Further, the distance matrix D is used for AB Estimating a distance value F of the voltage sampling point between the first estimating device and the second estimating device ij The method specifically comprises the following steps:
obtaining the distance matrix D AB Each row in the set corresponds to the minimum value of the coordinate distance and is recorded as a matching distance, and the matching distances are integrated into a matching distance group;
obtaining the maximum value of the coordinate distance contained in the matching distance group and recording the maximum value as the distance value F ij
Further, before the step of providing the ith overvoltage detection device on the protection circuit, the method includes:
judging whether the setting position of the ith overvoltage detection device exceeds the tail end of the protection circuit;
if not, the ith overvoltage detection device is arranged at the arrangement position.
Further, after the step of determining whether the setting position exceeds the end of the protection line, the method further includes:
if so, shortening the set distance according to a preset distance to obtain a shortened calculation distance;
and replacing the set distance with the shortened estimated distance, and returning to the step of setting the ith overvoltage detection device on the protection circuit by setting i = 2.
Further, the first distance value F is judged ij1 Whether to compare with a preset setting value F set The matching step specifically comprises the following steps:
judging the first distance value F ij1 And the preset setting value F set Whether the difference value between the two is less than or equal to a preset amplification factor k or not;
if yes, judging the first distance value F ij1 And a preset setting value F set And (6) matching.
Further, the first distance value F is judged ij1 Whether to be equal to a preset setting value F set The matching step further comprises:
if the first distance value F ij1 Greater than the preset setting value F set And a first distance value F ij1 And a preset setting value F set If the difference value is larger than a preset amplification factor k, extending the distance between the ith overvoltage detection device and the ith-1 overvoltage detection device according to the set distance, and returning to execute a Frechet distance calculation step;
if the first distance value F ij1 Less than the preset setting value F set And a first distance value F ij1 And a preset setting value F set If the difference value is larger than a preset amplification factor k, shortening the distance between the ith overvoltage detection device and the ith-1 overvoltage detection device according to the set distance, and returning to execute a Frechet distance calculation step.
A detection device setting system based on a Frechet algorithm comprises a protection circuit and a plurality of overvoltage detection devices, and the system comprises:
the device comprises a setting unit, a first switching unit and a second switching unit, wherein the setting unit is used for setting an ith overvoltage detection device on a protection circuit, the initial value of i is 2, the 1 st overvoltage detection device is already arranged at the starting point of the protection circuit, the first distance between the setting position of the ith overvoltage detection device and the starting point is greater than the second distance between the setting position of the ith-1 overvoltage detection device and the starting point, and the difference value between the first distance and the second distance is a set distance preset by a user;
a step executing unit, configured to execute a frechet distance calculating step, so as to calculate a first distance value F between a first voltage sampling point acquired by the i-1 th overvoltage detection device and a second voltage sampling point acquired by the i-1 th overvoltage detection device when an overvoltage condition occurs ij1 ；
A judging unit for judging the first distance value F ij1 Whether to be equal to a preset setting value F set Matching;
the position identification unit is used for judging whether the setting position of the ith overvoltage detection device is reasonable or not, returning to the step of setting the ith overvoltage detection device on the protection circuit after i = i +1 until the setting of all the overvoltage detection devices on the protection circuit is finished;
and an adjusting unit, configured to adjust a position of the ith overvoltage detection device on the protection circuit if the determination result is negative, and return to the execution of the frechet distance estimation step.
A computer device comprising a memory and a processor, the memory storing a computer program that, when executed by the processor, causes the processor to perform the steps of:
setting an ith overvoltage detection device on the protection circuit, wherein the initial value of i is 2, the 1 st overvoltage detection device is already arranged at the starting point of the protection circuit, the first distance between the setting position of the ith overvoltage detection device and the starting point is greater than the second distance between the setting position of the i-1 st overvoltage detection device and the starting point, and the difference value between the first distance and the second distance is the preset distance preset by a user;
performing a Frechet distance estimation step to estimate a first distance value F between a first voltage sampling point acquired by the 1 st overvoltage detection device and a second voltage sampling point acquired by the ith overvoltage detection device when an overvoltage condition occurs ij1 ；
Judging the first distance value F ij1 Whether to be equal to a preset setting value F set Matching;
if so, judging that the setting position of the ith overvoltage detection device is reasonable, and returning to the step of setting the ith overvoltage detection device on the protection circuit after i = i +1 until the setting of all the overvoltage detection devices on the protection circuit is finished;
if not, adjusting the position of the ith overvoltage detection device on the protection circuit, and returning to execute the step of executing the Frechet distance estimation
A computer-readable medium storing a computer program which, when executed by a processor, causes the processor to perform the steps of:
setting an ith overvoltage detection device on the protection circuit, wherein the initial value of i is 2, the 1 st overvoltage detection device is already arranged at the starting point of the protection circuit, the first distance between the setting position of the ith overvoltage detection device and the starting point is greater than the second distance between the setting position of the i-1 st overvoltage detection device and the starting point, and the difference value between the first distance and the second distance is the preset distance preset by a user;
performing a Frechet distance estimation step to estimate a first distance value F between a first voltage sampling point acquired by the 1 st overvoltage detection device and a second voltage sampling point acquired by the ith overvoltage detection device when an overvoltage condition occurs ij1 ；
Judging the first distance value F ij1 Whether to be equal to a preset setting value F set Matching;
if so, judging that the setting position of the ith overvoltage detection device is reasonable, and returning to the step of setting the ith overvoltage detection device on the protection circuit after i = i +1 until the setting of all the overvoltage detection devices on the protection circuit is finished;
if not, adjusting the position of the ith overvoltage detection device on the protection circuit, and returning to execute the Frechet distance estimation step
And if so, arranging other overvoltage detection devices on the protection circuit according to the set distance.
According to the detection device setting method, the detection device setting system, the computer equipment and the medium based on the Frechet algorithm, the distance between the set overvoltage detection devices is calculated by using a Frechet distance calculation method, and the optimal distance set between the overvoltage detection devices is accurately calculated by using a preset setting value to judge whether the distance setting is proper, so that the equipment investment quantity can be reduced on the basis of ensuring the information reliability by being different from the traditional fixed distance arrangement distributed detection device setting mode based on the Frechet algorithm, the problems that the overvoltage on-line detection device storage quantity is insufficient and the cost is too high due to the fact that the number is too much in pursuit of benefit maximization and the like in the traditional detection device setting mode based on the Frechet algorithm are solved, and the setting cost of a user when the overvoltage on-line detection device is set is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
fig. 1 is a schematic flow chart of a detection device setting method based on a frechet algorithm in an embodiment;
FIG. 2 is a schematic structural diagram of a detection device setting system based on a Frechet algorithm in an embodiment;
FIG. 3 is a block diagram of a computing device in one embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
S1, arranging an ith overvoltage detection device on a protection circuit, wherein the initial value of i is 2, the 1 st overvoltage detection device is arranged at the starting point of the protection circuit, the first distance between the arrangement position of the ith overvoltage detection device and the starting point is greater than the second distance between the arrangement position of the ith-1 overvoltage detection device and the starting point, and the difference value of the first distance and the second distance is a preset distance preset by a user;
as described in the step S1, the protection circuit is a three-phase ac power transmission line, and the user simulates the arrangement positions of the 1 st overvoltage detection device and the ith overvoltage detection device on the protection circuit through the background system and the set distance, so that the user arranges the 1 st overvoltage detection device at the starting point of the protection circuit where the overvoltage detection device needs to be arranged, and then arranges the ith overvoltage detection device behind the 1 st overvoltage detection device at a position matching the set distance;
it is understood that a first distance between the installation position of the ith overvoltage detection device and the starting point (i.e., the 1 st overvoltage detection device) is greater than a second distance between the installation position of the ith-1 st overvoltage detection device (i.e., the 1 st overvoltage detection device) installed on the protection circuit and the starting point, and furthermore, a difference between the first distance and the second distance is a set distance preset by a user;
for example, when i =3 after performing the superposition once in the loop step, a first distance between the installation position of the 3 rd overvoltage detection device and the starting point (i.e., the 1 st overvoltage detection device) is greater than a second distance between the installation position of the 2 nd overvoltage detection device (i.e., the 1 st overvoltage detection device) installed on the protection circuit and the starting point;
in addition, in the present embodiment, the first overvoltage detecting device and the ith overvoltage detecting device are used to obtain voltage parameters of the setting position of the protection circuit when the overvoltage condition occurs on the protection circuit, such as: when the protection circuit is struck by lightning, if the protection circuit has an overvoltage condition, the first overvoltage detection device in the embodiment acquires a voltage parameter at the starting point of the protection circuit when the protection circuit is struck by lightning, and sends the voltage parameter to the background system;
in addition, the background system is generally a background server, and in addition, the background system may be an independent server, or may be a cloud server that provides basic cloud computing services such as a cloud service, a cloud database, cloud computing, a cloud function, cloud storage, a Network service, cloud communication, a middleware service, a domain name service, a security service, a Content Delivery Network (CDN), a big data and artificial intelligence platform, and the like, which is not limited in this respect.
S2, executing a Frechet distance calculating step to calculate a first distance value F between a first voltage sampling point acquired by the i-1 overvoltage detection device and a second voltage sampling point acquired by the i overvoltage detection device when an overvoltage condition occurs ij1 ；
As described in the above step S2, the background system executes a preset frechet distance estimation step, the frechet distance estimation step is used to obtain a first voltage sampling point obtained by the i-1 th overvoltage detection device and a second voltage sampling point obtained by the i-1 th overvoltage detection device when the overvoltage condition occurs on the protection line, and then estimate a first distance value H between the first voltage sampling point and the second voltage sampling point by using the frechet distance estimation method ij1 。
S3, judging the first distance value F ij1 Whether to be equal to a preset setting value F set Matching;
as described in the above step S3, the background system calculates the first distance value F between the first voltage sampling point and the second voltage sampling point through the frechet distance estimation step ij1 Then, obtaining a preset setting value F set It can be understood that the setting value F is preset set The specific numerical value is set by the user, and the background system judges the first distance value F at the moment ij1 Whether to compare with a preset setting value F set Matching;
further, in the present embodiment, when the setting value F is preset set A first distance value F ij1 When the difference value between the first distance value and the second distance value is less than or equal to a preset value, the background system judges the first distance value F ij1 Setting with presetValue F set And (6) matching.
S4, if so, judging that the setting position of the ith overvoltage detection device is reasonable, and returning to the step of setting the ith overvoltage detection device on the protection circuit after i = i +1 until the setting of all the overvoltage detection devices on the protection circuit is completed;
as mentioned in the above step S4, when the background system determines the first distance value F ij1 And a preset setting value F set After matching, judging that the setting position of the ith overvoltage detection device is reasonable, and returning to the step of setting the ith overvoltage detection device on the protection circuit after i = i + 1;
for example, when i =3, when the background system determines the first distance value F between the 2 nd overvoltage detection device and the 3 rd overvoltage detection device ij1 And a preset setting value F set And matching, if the background system makes i = i +1, generating a 4 th overvoltage detection device, and then returning to the step of setting the ith overvoltage detection device on the protection circuit, so as to calculate the distance value between the 3 rd overvoltage detection device and the 4 th overvoltage detection device, and executing the steps in a circulating manner until all the overvoltage detection devices on the protection circuit are set.
And S5, if not, adjusting the position of the ith overvoltage detection device on the protection circuit, and returning to execute the Frechet distance estimation step.
As mentioned in step S5, when the background system determines the first distance value F ij1 And a preset setting value F set And after matching, judging that the setting position of the ith overvoltage detection device is unreasonable, adjusting the position of the ith overvoltage detection device on the protection circuit by the background system, and returning to execute the step of performing the Friechet distance calculation until the setting of all the overvoltage detection devices on the protection circuit is completed.
According to the method, the distances between the set overvoltage detection devices are calculated by using a Frechet distance calculation method, and the optimal distances set between the overvoltage detection devices are accurately calculated by using a preset setting value to judge whether the distance setting is proper, so that the method is different from the traditional fixed distance arrangement distributed detection device setting mode based on the Frechet algorithm, the equipment investment quantity can be reduced on the basis of ensuring the reliability of information, the problems that the storage quantity of the overvoltage on-line detection devices is insufficient and the cost is too high due to the fact that the set quantity is too large in the existing detection device setting mode based on the Frechet algorithm in the prior art is pursued for maximization of benefits and the like are solved, and the setting cost of a user in setting the overvoltage on-line detection devices is reduced.
In an embodiment, the frechet distance calculating step specifically includes:
s21, acquiring a preset reference coordinate system, wherein a horizontal axis of the reference coordinate system is voltage acquisition time, a horizontal axis of the reference coordinate system is a voltage acquisition numerical value, and preset fault points are connected to the i-1 overvoltage detection device and the i-1 overvoltage detection device for overvoltage test, so that a voltage sampling track A of the i-1 overvoltage detection device on the preset reference coordinate system and a voltage sampling track B of the i-1 overvoltage detection device on the preset reference coordinate system are acquired, and a plurality of first voltage sampling points alpha are contained in the voltage sampling track A x The voltage sampling track B comprises a plurality of second voltage sampling points beta γ The x and the gamma correspond to the voltage acquisition time on the horizontal axis of the reference coordinate system, and the first voltage sampling point alpha is acquired x And the second voltage sampling point beta γ And said coordinate distance is also denoted as (alpha) x ，β γ ) According to said coordinate distance (α) x ，β γ ) Generating a distance matrix D AB The distance matrix collectively D AB The concrete embodiment is as follows:
according to the distance matrix D AB Estimating a distance value F of the voltage sampling point between the first estimating device and the second estimating device ij 。
As described in the above embodiment, the background system obtains a preset reference coordinate system, where the horizontal axis of the reference coordinate system is voltage obtaining time, and the horizontal axis is a voltage obtaining value, and then the background system connects preset fault points to the i-1 th overvoltage detection device and the i-th overvoltage detection device, so as to realize the simulation of the overvoltage condition, and then the background system obtains a voltage sampling trajectory a of the i-1 th overvoltage detection device during the simulation of the overvoltage condition and a voltage sampling trajectory B of the i-th overvoltage detection device during the simulation of the overvoltage condition, where the voltage sampling trajectory a includes a plurality of first voltage sampling points α x The voltage sampling track B comprises a plurality of second voltage sampling points beta γ Then a background system acquires the first voltage sampling point alpha x And the second voltage sampling point beta γ Coordinate distance therebetween, and the coordinate distance is also denoted as (α) x ，β γ ) Then, according to the coordinate distance (alpha) x ，β γ ) Generating a distance matrix D AB The distance matrix collectively D AB The concrete embodiment is as follows:
it will be appreciated that x and y correspond to the voltage acquisition times on the horizontal axis of the predetermined reference frame, such as the first voltage sampling point α 1 And a second voltage sampling point beta 1 For voltage sampling points acquired at the same voltage acquisition time on the preset reference coordinate system, (a) 1 ，β 1 ) Namely a first voltage sampling point alpha acquired at the same voltage acquisition time on a preset reference coordinate system 1 And a second voltage sampling point beta 1 Coordinate distance therebetween, and (a) 1 ，β 2 ) I.e. the first voltage sampling point alpha on the preset reference coordinate system 1 And a second voltage sampling point beta 1 Second voltage sampling point beta acquired at next voltage acquisition time 2 Coordinate distance between, and so on, the first distance matrix D AB Inner bagA first voltage sampling point alpha corresponding to all voltage acquisition time on a preset reference coordinate system is included x Second voltage sampling points beta corresponding to all voltage acquisition time on the preset reference coordinate system γ The coordinate distance therebetween;
then the background system according to the distance matrix D AB Estimating a distance value F of the voltage sampling point between the i-1 th estimation device and the i-th estimation device ij 。
In one embodiment, the distance matrix D is obtained according to AB Estimating a distance value F of the voltage sampling point between the first estimation device and the second estimation device ij The method specifically comprises the following steps:
s22, obtaining the distance matrix D AB Recording the minimum value of the coordinate distance corresponding to each inner row as a matching distance, integrating the matching distances into a matching distance group, obtaining the maximum value of the coordinate distance contained in the matching distance group, and recording the maximum value as the distance value F ij 。
As described in the above embodiments, the backend system obtains the distance matrix D AB The minimum distance of the coordinate corresponding to each row in the array is recorded as the first matching distance, and it can be understood that the distance matrix D AB The coordinate distance corresponding to each row is the same first voltage sampling point alpha x Second voltage sampling points beta corresponding to all voltage acquisition time on the preset reference coordinate system γ Coordinate distance between, for example: distance matrix D AB The coordinate distance of the upper first row is the first voltage sampling point alpha 1 To a second voltage sampling point beta 1-γ Coordinate distance between them, then the background system obtains the distance matrix D AB Recording the minimum value in the corresponding coordinate distance in each row as a matching distance, integrating the matching distances into a matching distance group, acquiring the maximum value of the coordinate distances contained in the matching distance group, and recording the maximum value as the distance value F ij 。
In one embodiment, the step of providing the ith overvoltage detection device on the protection circuit includes:
s11, judging whether the setting position of the ith overvoltage detection device exceeds the tail end of the protection circuit, and if not, setting the ith overvoltage detection device at the setting position.
As described in the above embodiment, in order to obtain a voltage sampling point of the protection circuit when an overvoltage condition occurs, the end of the protection circuit must be provided with a corresponding overvoltage detection device, and when the backend system determines that the setting position of the ith overvoltage detection device does not exceed the end of the protection circuit, it can be understood that when the setting position does not exceed the end of the protection circuit, it proves that the distance between the ith-1 overvoltage detection device and the ith overvoltage detection device is proper, and then after setting the ith overvoltage detection device at the setting position, the step of setting the ith overvoltage detection device in the protection circuit is returned to be executed until the setting of all the overvoltage detection devices on the protection circuit is completed.
In an embodiment, after the step of determining whether the setting position exceeds the end of the protection line, the method further includes:
s12, if yes, shortening the set distance according to the preset distance to obtain a shortened calculation distance;
and replacing the set distance with the shortened estimated distance, and returning to the step of arranging the ith overvoltage detection device on the protection circuit by enabling i = 2.
As described in the foregoing embodiment, when the background system determines that the setting position of the ith overvoltage detection device exceeds the end of the protection circuit, it can be understood that, when the setting position exceeds the end of the protection circuit, it proves that the distance between the ith-1 overvoltage detection device and the ith overvoltage detection device is too long, then the background system determines that the corresponding overvoltage detection device is not set at the end of the protection circuit, and then the background system shortens the setting distance according to the preset distance, so as to obtain a shortened estimated distance, and it can be understood that the shortened estimated distance is less than or equal to the distance between the setting position of the ith-1 overvoltage detection device and the end of the protection circuit, so as to ensure that the ith overvoltage detection device adjusted according to the shortened estimated distance is kept in the protection circuitIf the position on the protection circuit does not exceed the tail end of the protection circuit, the rear system replaces the set distance with the shortened estimated distance, and enables i =2, so that the step of arranging the ith overvoltage detection device on the protection circuit is restarted, and the purpose of restarting estimating the distance value H between the 1 st overvoltage detection device and the 2 nd overvoltage detection device is achieved ij The function of ensuring that the position of the ith overvoltage detection device adjusted according to the shortened estimated distance on the protection circuit does not exceed the tail end of the protection circuit.
In an embodiment, the step S3 specifically includes:
s31, judging the first distance value F ij1 And the preset setting value F set Whether the difference value is less than or equal to a preset amplification factor k, if so, judging the first distance value F ij1 And a preset setting value F set And (6) matching.
As described in the above embodiments, when the background system needs to determine the first distance value F ij1 Whether to be equal to a preset setting value F set When the distance value is matched with the preset amplification factor k, the background system acquires the preset amplification factor k, and then judges the first distance value F ij1 And the preset setting value F set Satisfies the relationship of (D) F ij1 -F set When k is less than or equal to k, the background system judges the first distance value F ij1 And a preset setting value F set And matching and returning to execute if the current overvoltage detection device is in the set position, and judging that the setting position of the ith overvoltage detection device is reasonable.
It should be understood that the specific value of the preset amplification factor k is set by the user, and the present invention is not limited to the specific value of the preset amplification factor k.
In an embodiment, said determining said first distance value F ij1 Whether to be equal to a preset setting value F set The matching step further comprises:
if the first distance value F ij1 Greater than the preset setting value F set And a first distance value F ij1 And a preset setting value F set If the difference is greater than a preset amplification factor k, the ith overvoltage detection device and the (i-1) th overvoltage detection device are extended according to the set distanceAnd returning to execute the Frechet distance calculation step;
if the first distance value F ij1 Less than the preset setting value F set And a first distance value F ij1 And a preset setting value F set If the difference value is larger than a preset amplification factor k, shortening the distance between the ith overvoltage detection device and the ith-1 overvoltage detection device according to the set distance, and returning to execute a Frechet distance calculation step.
As described in the above embodiments, when the background system determines the first distance value F ij1 And a preset setting value F set If not, the background system judges the first distance value F again ij1 Whether the value is greater than a preset setting value F set While the first distance value F ij1 And a preset setting value F set Is greater than a predetermined amplification factor k, due to the first distance value F ij1 Greater than a preset setting value F set Then, the background system judges that the obtained voltage sampling track and the preset setting value F are caused by too close distance between the ith overvoltage detection device and the ith-1 overvoltage detection device set The similarity between the corresponding set tracks is too high, so the distance between the ith overvoltage detection device and the ith-1 overvoltage detection device needs to be prolonged to reduce the voltage sampling track and the preset setting value F set The similarity between the corresponding set tracks is determined, so that the background system prolongs the set distance according to the set distance to generate an extended replacement distance, replaces the set distance with the extended replacement distance, and then re-calculates the distance value F through the distance calculation step in a circulating manner ij Up to a distance value F ij And a preset setting value F set Until the matching is finished, thereby realizing that the position of the ith overvoltage detection device on the protection circuit is adjusted and simultaneously reducing the voltage sampling track and the preset setting value F set A function of setting a similarity between the trajectories correspondingly;
in addition, if the first distance value F is smaller than the second distance value ij1 Is less than the preset setting value F set Then, the distance between the ith overvoltage detection device and the ith-1 overvoltage detection device is shortened according to the set distanceAnd returning to execute the Frechet distance calculation step;
when the background system judges the first distance value F ij1 And a preset setting value F set If not, the background system judges the first distance value F again ij1 Whether the value is less than a preset setting value F set While the first distance value F ij1 And a preset setting value F set Is greater than a predetermined amplification factor k, since the first distance value F is smaller than the predetermined amplification factor k ij1 Less than a preset setting value F set Then, the background system judges that the distance between the ith overvoltage detection device and the ith-1 overvoltage detection device is too far, so that the obtained voltage sampling track and the preset setting value F are caused set The similarity between the corresponding set tracks is too low, so that the distance between the ith overvoltage detection device and the ith-1 overvoltage detection device needs to be shortened to improve the similarity of the voltage sampling track, and at the moment, the background system shortens the set distance according to the set distance to generate a shortened replacement distance, replaces the set distance with the shortened replacement distance, and then circularly estimates a distance value F through a distance estimation step again ij Up to a distance value F ij And a preset setting value F set Until the position of the ith overvoltage detection device on the protection circuit is matched, so that the position of the ith overvoltage detection device on the protection circuit is adjusted, and simultaneously, the voltage sampling track is lifted up to the preset setting value F set And correspondingly setting the similarity between the tracks.
It can be understood that, since the above embodiment returns only to the frichet distance estimation step for performing again, the above embodiment is only used for adjusting the setting distance between two corresponding overvoltage detection devices on the protection line, and the setting distance between the remaining overvoltage detection devices on the protection line is not affected.
A detection device setting system based on a Frechet algorithm comprises a protection circuit and a plurality of overvoltage detection devices, and the system comprises:
the device comprises a setting unit 1, a first switching unit and a second switching unit, wherein the setting unit 1 is used for setting an ith overvoltage detection device on a protection circuit, the initial value of i is 2, the 1 st overvoltage detection device is already arranged at the starting point of the protection circuit, a first distance between the setting position of the ith overvoltage detection device and the starting point is greater than a second distance between the setting position of the ith-1 overvoltage detection device and the starting point, and the difference value between the first distance and the second distance is a set distance preset by a user;
a step executing unit 2, configured to execute a frechet distance calculating step, so as to calculate a first distance value F between a first voltage sampling point acquired by the i-1 th overvoltage detection device and a second voltage sampling point acquired by the i-1 th overvoltage detection device when an overvoltage condition occurs ij1 ；
A judging unit 3 for judging the first distance value F ij1 Whether to be equal to preset setting value H set Matching;
the position identification unit 4 is configured to determine that the setting position of the ith overvoltage detection device is reasonable if the determination result is yes, and return to the step of setting the ith overvoltage detection device on the protection circuit after i = i +1 until the setting of all the overvoltage detection devices on the protection circuit is completed;
and the adjusting unit 5 is used for adjusting the position of the ith overvoltage detection device on the protection circuit if the judgment result is no, and returning to execute the step of performing the Frechet distance estimation.
The above units are provided for executing the above voltage detection device, and are not described one by one.
FIG. 3 is a diagram illustrating an internal structure of a computer device in one embodiment. The computer device may be specifically a server including, but not limited to, a high performance computer and a high performance cluster of computers. As shown in fig. 3, the computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system and also stores a computer program, and when the computer program is executed by a processor, the computer program can enable the processor to realize the employee state judgment method. The internal memory may also store a computer program, which, when executed by the processor, causes the processor to perform the method for setting a detection apparatus based on the frechet algorithm.
In one embodiment, the client behavior recognition method provided by the present invention can be implemented in the form of a computer program that can be run on a computer device as shown in fig. 3. The memory of the computer equipment can store various program templates which form the automatic mail classifying and aggregating device. Such as:
a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
setting a first overvoltage detection device at the starting point of a protection circuit, executing a device setting step, setting a second overvoltage detection device on the protection circuit, wherein the distance between the second overvoltage detection device and the first overvoltage detection device is a preset distance preset by a user, executing a Frechet distance calculation step, and calculating a first distance value F of a voltage sampling point between the first overvoltage detection device and the second overvoltage detection device ij1 Judging the first distance value F ij1 Whether to be equal to preset setting value H set And if so, arranging other overvoltage detection devices on the protection circuit according to the set distance.
The method has the advantages that the distance between the overvoltage detection devices is calculated by using a Frechet distance calculation method, whether the distance setting is proper or not is judged by using a preset setting value, the optimal distance between the overvoltage detection devices is accurately calculated, the method is different from the traditional fixed distance arrangement distributed detection device setting mode based on the Frechet algorithm, the equipment investment quantity can be reduced on the basis of guaranteeing the information reliability, the problems that the number of the overvoltage on-line detection devices is insufficient and the cost is too high due to the fact that the number of the overvoltage on-line detection devices is too large due to pursuit of the efficiency maximization and the like in the existing detection device setting mode based on the Frechet algorithm in the prior art are solved, and the setting cost of a user in the overvoltage on-line detection device setting process is reduced.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the program is executed. Any reference to memory, storage, databases, or other media used in embodiments provided herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), and double data rate.
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A detection device setting method based on a Frechet algorithm is characterized by comprising a protection circuit and a plurality of overvoltage detection devices, and the method comprises the following steps:
setting an ith overvoltage detection device on the protection circuit, wherein the initial value of i is 2, the 1 st overvoltage detection device is already arranged at the starting point of the protection circuit, the first distance between the setting position of the ith overvoltage detection device and the starting point is greater than the second distance between the setting position of the i-1 st overvoltage detection device and the starting point, and the difference value between the first distance and the second distance is the preset distance preset by a user;
performing a Frchet distance calculating step to calculate a first distance value F between a first voltage sampling point acquired by the i-1 th overvoltage detection device and a second voltage sampling point acquired by the i-th overvoltage detection device when an overvoltage condition occurs ij1 ；
Judging the first distance value F ij1 Whether to be equal to a preset setting value F set Matching;
if so, judging that the setting position of the ith overvoltage detection device is reasonable, and returning to the step of setting the ith overvoltage detection device on the protection circuit after i = i +1 until the setting of all the overvoltage detection devices on the protection circuit is finished;
and if not, adjusting the position of the ith overvoltage detection device on the protection circuit, and returning to execute the Frechet distance estimation step.
2. A detection apparatus setting method based on a frechet algorithm according to claim 1, characterized in that the frechet distance calculating step specifically includes:
acquiring a preset reference coordinate system, wherein the horizontal axis of the reference coordinate system is voltage acquisition time, and the horizontal axis is a voltage acquisition numerical value;
connecting a preset fault point to the ith-1 overvoltage detection device and the ith overvoltage detection device to perform overvoltage test, so as to obtain a voltage sampling track A of the ith-1 overvoltage detection device on the preset reference coordinate system and a voltage sampling track B of the ith overvoltage detection device on the preset reference coordinate system;
the voltage sampling trajectory A comprises a plurality of first voltage sampling points alpha x The voltage sampling track B comprises a plurality of second voltage sampling points beta γ Said x is represented byAnd gamma corresponds to the voltage acquisition time on the horizontal axis of the reference coordinate system;
obtaining the first voltage sampling point alpha x And the second voltage sampling point beta γ And said coordinate distance is also denoted as (alpha) x ，β γ )；
According to the coordinate distance (alpha) x ，β γ ) Generating a distance matrix D AB The distance matrix collectively D AB The concrete embodiment is as follows:
according to the distance matrix D AB Estimating a distance value F of the voltage sampling point between the first estimating device and the second estimating device ij 。
3. The method for setting up a detection device based on the Frechet algorithm according to claim 2, characterized in that said detection device is set up according to the distance matrix D AB Estimating a distance value F of the voltage sampling point between the first estimating device and the second estimating device ij The method specifically comprises the following steps:
obtaining the distance matrix D AB Each row in the set corresponds to the minimum value of the coordinate distance and is recorded as a matching distance, and the matching distances are integrated into a matching distance group;
obtaining the maximum value of the coordinate distance contained in the matching distance group and recording the maximum value as the distance value F ij 。
4. The method for setting up a sensing device based on the frechet algorithm according to claim 1, characterized in that before the step of setting up the ith overvoltage sensing device on the protection line, it comprises:
judging whether the setting position of the ith overvoltage detection device exceeds the tail end of the protection circuit;
if not, the ith overvoltage detection device is arranged at the arrangement position.
5. The method for setting a detection device according to the frechet algorithm recited in claim 1, wherein the step of determining whether the setting position exceeds the end of the protection line further comprises:
if so, shortening the set distance according to a preset distance to obtain a shortened calculation distance;
and replacing the set distance with the shortened estimated distance, and returning to the step of setting the ith overvoltage detection device on the protection circuit by setting i = 2.
6. The method for setting up a detection device based on the Frechet algorithm according to claim 1, wherein the determination of the first distance value F is made ij1 Whether to be equal to a preset setting value F set The matching step specifically comprises the following steps:
judging the first distance value F ij1 And the preset setting value F set Whether the difference value between the two values is less than or equal to a preset amplification factor k or not;
if yes, judging the first distance value F ij1 And a preset setting value F set And (6) matching.
7. The method for setting up a detection device based on the Frechet algorithm according to claim 4, wherein the method further comprises:
if the first distance value F ij1 Greater than the preset setting value F set And a first distance value F ij1 And a preset setting value F set If the difference value is greater than a preset amplification coefficient k, extending the distance between the ith overvoltage detection device and the ith-1 overvoltage detection device according to the set distance, and returning to execute a Frechet distance calculation step;
if the first distance value F ij1 Less than the preset setting value F set And a first distance value F ij1 And a preset setting value F set If the difference is greater than the preset amplification factor k, the distance is shortened according to the set distanceAnd returning to the step of estimating the Frechet distance after the distance between the ith overvoltage detection device and the ith-1 overvoltage detection device is calculated.
8. A detection device setting system based on a Frechet algorithm is characterized by comprising a protection circuit and a plurality of overvoltage detection devices, and the system comprises:
the device comprises a setting unit, a first switching unit and a second switching unit, wherein the setting unit is used for setting an ith overvoltage detection device on a protection circuit, the initial value of i is 2, the 1 st overvoltage detection device is already arranged at the starting point of the protection circuit, the first distance between the setting position of the ith overvoltage detection device and the starting point is greater than the second distance between the setting position of the ith-1 overvoltage detection device and the starting point, and the difference value between the first distance and the second distance is a set distance preset by a user;
a step executing unit, configured to execute a frechet distance calculating step, so as to calculate a first distance value F between a first voltage sampling point acquired by the i-1 th overvoltage detection device and a second voltage sampling point acquired by the i-1 th overvoltage detection device when an overvoltage condition occurs ij1 ；
A judging unit for judging the first distance value F ij1 Whether to be equal to a preset setting value F set Matching;
the position identification unit is used for judging that the setting position of the ith overvoltage detection device is reasonable if the overvoltage detection device is arranged on the protection circuit, and returning to the step of setting the ith overvoltage detection device on the protection circuit after i = i +1 until the setting of all the overvoltage detection devices on the protection circuit is finished;
and the adjusting unit is used for adjusting the position of the ith overvoltage detection device on the protection circuit if the judging result is not positive, and returning to execute the step of performing the Frechet distance estimation.
9. Computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for setting up a detection apparatus based on the Frechet algorithm according to any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for setting a detection device based on the frechet algorithm according to any one of claims 1 to 7.
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