Intelligent detection system for loss of power grid transmission line

Abstract

The invention relates to an intelligent detection system, in particular to an intelligent detection system for loss of a power grid transmission line, and the system comprises a data acquisition module which is used for acquiring data of the power grid transmission line; the detection mode determination module is connected with the data acquisition module and is used for determining a mode for detecting the loss degree of the power grid transmission line; the data analysis module is respectively connected with the data mode determination module and the data acquisition module and is used for judging the qualification of the loss degree of the power grid transmission line; the data processing module is connected with the data analysis module and is used for determining an adjustment mode of the loss of the power grid transmission line; and the power compensation module is connected with the data acquisition module and the data processing module and is used for judging whether power compensation is carried out on the power grid transmission line or not. According to the invention, the detection accuracy and detection efficiency of the intelligent detection system on the power loss condition of the power grid transmission line are improved.

Description

Technical Field

[0001] The invention relates to an intelligent detection system, and in particular to an intelligent detection system for power grid transmission line loss. Background Art

[0002] With the development of social economy, the demand for electricity continues to increase, and the load of power grid transmission lines is also increasing, resulting in a more prominent line loss problem. In order to improve energy efficiency and reduce energy waste, it is necessary to accurately detect and reduce the loss of power grid transmission lines. The development of smart grid technology has prompted real-time monitoring and analysis of the status of power grid lines to achieve more efficient power transmission and management. Traditional line loss detection methods are usually based on regular inspections and manual measurements, which are inefficient and have limited accuracy, and are difficult to meet the requirements of modern power grids. To solve this problem, it is necessary to develop an intelligent detection system for power grid transmission line loss to improve the detection accuracy and efficiency of the intelligent detection system for power grid transmission line power loss.

[0003] Chinese patent application publication number: CN1880965A discloses a transmission line disconnection monitoring alarm device, including: a bias current circuit connected to the transmission line, which generates a bias current flowing out of the transmission line at the tail end of the transmission line, and the bias current circuit contains an impedance between the live wire connected to the tail end of the transmission line and the ground; a current detection circuit for detecting the bias current generated by the bias current circuit; a driving circuit connected to the output end of the current detection circuit, which drives the alarm to alarm when the current detection circuit does not detect the bias current generated by the bias current circuit; and an alarm. However, the prior art has the following problems: The device lacks intelligent detection of power grid transmission line losses, and has low detection accuracy for power grid transmission line power loss conditions, which leads to the problem of low efficiency in detecting power grid transmission line power loss conditions. Summary of the invention

[0004] To this end, the present invention provides an intelligent detection system for power grid transmission line loss, so as to overcome the problems of low detection accuracy and low detection efficiency of power grid transmission line power loss by the intelligent detection system in the prior art.

[0005] To achieve the above object, the present invention provides an intelligent detection system for power grid transmission line loss, comprising: A data acquisition module, which is used to acquire data of a power transmission line, including a vibration sensor arranged on the power transmission line to detect vibration information of the power transmission line, a current sensor arranged on the power transmission line to detect current information of the power transmission line, a temperature sensor arranged on the power transmission line to detect temperature of the power transmission line, and a humidity sensor arranged on the power transmission line to detect humidity of the power transmission line; A detection mode determination module, which is connected to the data acquisition module, is used to determine the importance of the power grid transmission line based on the associated characteristics of a number of power supply processes, determine the line evaluation value of the line loss degree according to the importance, or determine the overlap between the vibration curve of the line and the line loss curve to determine the power grid transmission line loss degree; A data analysis module, which is connected to the detection mode determination module and the data acquisition module respectively, and is used to determine the eligibility of the power grid transmission line loss degree based on the comparison result of the line evaluation value determined by the importance degree with the preset line evaluation value or the comparison result of the coincidence evaluation value with the preset coincidence evaluation value; A data processing module connected to the data analysis module is used to determine the adjustment of several parameters in the power grid transmission line according to the line evaluation difference or the coincidence evaluation difference under the condition that the line loss degree is unqualified, wherein the several parameters include current, voltage or detection cycle; A power compensation module is connected to the data acquisition module and the data processing module, and is used to determine power compensation for the power grid transmission line based on the meteorological state evaluation value, and to determine the correction of the current in the power grid transmission line based on the change of vibration amplitude on the power grid transmission line after power compensation.

[0006] Furthermore, the data acquisition module determines that the power grid transmission line loss degree is unqualified based on the comparison result that the line evaluation value of the power grid transmission line loss degree is less than or equal to the preset line evaluation value under the condition that the importance evaluation value is less than or equal to the preset importance evaluation value.

[0007] Furthermore, the data acquisition module determines that the degree of loss of the power grid transmission line is unqualified based on the comparison result that the coincidence evaluation value calculated based on the segmented slope of each power grid line is less than or equal to the preset coincidence evaluation value under the condition that the importance evaluation value is greater than the preset importance evaluation value.

[0008] Furthermore, under the condition that the data analysis module determines that the loss degree of the power grid transmission line is unqualified, the data processing module determines to reduce the current in the power grid transmission line by the current reduction coefficient based on the comparison result that the line evaluation difference is less than or equal to the preset line evaluation difference, wherein the line evaluation difference is the difference between the preset line evaluation value and the line evaluation value.

[0009] Furthermore, under the condition that the data analysis module determines that the loss degree of the power grid transmission line is unqualified, the data processing module determines to increase the voltage in the power grid transmission line by the voltage increase coefficient based on the comparison result that the line evaluation difference is greater than the preset line evaluation difference.

[0010] Furthermore, when the data analysis module is under the condition that the loss degree of the power grid transmission line is unqualified, the data processing module determines to increase the voltage of the power grid transmission line with the voltage adjustment coefficient based on the comparison result that the coincidence evaluation difference is less than or equal to the preset coincidence evaluation difference, wherein the coincidence evaluation difference is the difference between the coincidence evaluation value and the preset coincidence evaluation value.

[0011] Furthermore, when the loss degree of the power grid transmission line is unqualified, the data analysis module determines to increase the detection period of the power grid transmission line by the period adjustment coefficient based on the comparison result that the coincidence evaluation difference is greater than the preset coincidence evaluation difference.

[0012] Furthermore, the power compensation module determines the power compensation coefficient according to the comparison result that the meteorological state evaluation value is less than the preset meteorological state evaluation value to perform power compensation on the power grid transmission line, determines that the loss degree of the power grid transmission line after power compensation is unqualified based on the increase in the vibration amplitude change after power compensation, and corrects the current reduction coefficient.

[0013] Furthermore, the data processing module determines a comparison result that a first power loss ratio is less than or equal to a preset first power loss ratio under the condition that the power loss in the power transmission line between the power grid node and the next power grid node is less than or equal to the power loss in the preset line, and increases the preset line evaluation value or the preset overlap evaluation value with the first preset power adjustment coefficient.

[0014] Furthermore, the data processing module determines a comparison result that a first power loss ratio is greater than a preset first power loss ratio under the condition that the power loss in the power transmission line between the power grid node and the next power grid node is less than or equal to the power loss in the preset line, and increases the preset line evaluation value or the preset overlap evaluation value with a second preset power adjustment coefficient.

[0015] Compared with the prior art, the beneficial effect of the present invention lies in that the present invention uses a data acquisition module to compare the importance evaluation value with a preset importance evaluation value. For example, when the importance evaluation value is small, the loss rate on the power line is high, and the line evaluation value is used to determine the eligibility, thereby enhancing the targeted detection and improving the accuracy of intelligent detection of power grid transmission line losses.

[0016] Furthermore, the present invention determines the eligibility of the degree of loss of a power grid transmission line by comparing the line evaluation value of the degree of loss of the power grid transmission line with a preset line evaluation value, thereby achieving the detection accuracy of the eligibility of the degree of loss of the power grid transmission line, thereby improving the accuracy of the intelligent detection system for power grid transmission line loss.

[0017] Furthermore, the present invention determines the adjustment method of reducing current or increasing voltage by comparing a preset line evaluation value with a line evaluation difference of the line evaluation value and a preset line evaluation difference, thereby effectively optimizing the operating state of the power grid transmission line under the condition that the loss degree of the power grid transmission line is unqualified, thereby improving the efficiency of the power grid transmission line intelligent detection system.

[0018] Furthermore, the present invention determines the eligibility of the degree of loss of the power grid transmission line by comparing the overlap evaluation value obtained by calculating the segmented slope of the power grid line with the preset overlap evaluation value, thereby achieving the detection accuracy of the eligibility of the degree of loss of the power grid transmission line, thereby improving the accuracy of the intelligent detection system for power grid transmission line loss.

[0019] Furthermore, the present invention determines an adjustment method for increasing the voltage or increasing the detection period by comparing the coincidence evaluation value obtained by calculating the segmented slope of each power grid line with the coincidence evaluation difference of the preset coincidence evaluation value and the preset coincidence evaluation difference, so as to optimize the intelligent detection system of the power grid transmission line according to different situations, thereby improving the efficiency of the intelligent detection system of the power grid transmission line.

[0020] Furthermore, the present invention determines whether to perform power compensation on the power grid transmission line by comparing the meteorological state evaluation value with the preset meteorological state evaluation value, so as to realize that the intelligent detection system of the power grid transmission line is adjusted according to meteorological conditions to improve the power grid transmission efficiency, thereby further improving the detection accuracy of the intelligent detection system of the power grid transmission line.

[0021] Furthermore, the present invention determines the eligibility of the power loss by comparing the power loss amount with the power loss amount in the preset line, thereby improving the detection accuracy of the power loss situation of the power grid transmission line by the intelligent detection system. The adjustment method is determined according to the comparison result of the first power loss amount ratio of the power loss amount to the power loss amount in the preset line and the preset first power loss amount ratio, thereby improving the efficiency of the intelligent detection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an intelligent detection system for power grid transmission line loss according to an embodiment of the present invention; Figure 2 A flow chart of determining a detection mode for a power grid transmission line loss according to an embodiment of the present invention; Figure 3 A flow chart for determining the eligibility of a power grid transmission line loss degree according to an embodiment of the present invention; Figure 4 A flow chart for determining eligibility of power grid transmission loss according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0025] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0026] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1-Figure 4 As shown, Figure 1 It is a structural schematic diagram of an intelligent detection system for power grid transmission line loss according to an embodiment of the present invention; Figure 2 A flow chart of determining a detection mode for a power grid transmission line loss according to an embodiment of the present invention; Figure 3 A flow chart for determining the eligibility of a power grid transmission line loss degree according to an embodiment of the present invention; Figure 4 A flow chart for determining eligibility of power grid transmission loss according to an embodiment of the present invention.

[0028] The embodiment of the present invention is an intelligent detection system for power grid transmission line loss, comprising: A data acquisition module, which is used to acquire data of a power transmission line, including a vibration sensor arranged on the power transmission line to detect vibration information of the power transmission line, a current sensor arranged on the power transmission line to detect current information of the power transmission line, a temperature sensor arranged on the power transmission line to detect the temperature of the power transmission line; and a humidity sensor arranged on the power transmission line to detect humidity of the power transmission line; A detection mode determination module, which is connected to the data acquisition module and is used to determine a mode for detecting the degree of loss of power grid transmission lines; A data analysis module, which is connected to the detection mode determination module and the data acquisition module respectively, and is used to determine the eligibility of the degree of loss of the power grid transmission line; A data processing module, which is connected to the data analysis module and is used to determine the adjustment method of the power grid transmission line loss; A power compensation module is connected to the data acquisition module and is used to determine whether to perform power compensation on the power grid transmission line.

[0029] Specifically, the data acquisition module determines the detection mode for the power transmission line loss based on the comparison result of the importance evaluation value determined based on the number of users, power supply and number of branches of the power transmission line between the power plant and the substation and the preset importance evaluation value of 0.9; If the importance evaluation value is less than or equal to the preset importance evaluation value, the detection mode determination module determines to detect the degree of loss of the power grid transmission line in the first detection mode; If the importance evaluation value is greater than the preset importance evaluation value, the detection mode determination module determines to detect the degree of loss of the power grid transmission line in the second detection mode; In the embodiment of the present invention, the preset importance evaluation value is 0.9, and the preset importance evaluation value is obtained by taking the average of several historical importance evaluation values, but the above value is not limited to this, and technical personnel in this field can also adjust the value according to actual needs.

[0030] Specifically, the data analysis module calculates the importance evaluation value according to the following formula, setting: ; Among them, D represents the importance evaluation value, G represents the number of users, E represents the power supply, and B represents the number of power grid transmission line branches.

[0031] Specifically, the present invention uses a data acquisition module to compare the importance evaluation value with a preset importance evaluation value. For example, when the importance evaluation value is small, the loss rate on the power line is high. The line evaluation value is used to determine the eligibility, thereby enhancing the targeted detection and improving the accuracy of intelligent detection of power grid transmission line losses.

[0032] Specifically, the data analysis module determines the eligibility of the power grid transmission line loss degree according to the comparison result of the line evaluation value of the power grid transmission line loss degree and the preset line evaluation value 0.85 in the first detection mode; If the line evaluation value of the power grid transmission line loss degree is less than or equal to the preset line evaluation value, it is determined that the power grid transmission line loss degree is unqualified; If the line evaluation value of the power grid transmission line loss degree is greater than the preset line evaluation value, it is determined that the power grid transmission line loss degree is qualified; In the embodiment of the present invention, the preset line evaluation value is 0.85, and the preset line evaluation value is obtained by averaging several historical line evaluation values, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0033] Specifically, the present invention determines the eligibility of the degree of loss of a power grid transmission line by comparing the line evaluation value of the degree of loss of the power grid transmission line with a preset line evaluation value, thereby achieving the detection accuracy of the eligibility of the degree of loss of the power grid transmission line, thereby improving the accuracy of the intelligent detection system for power grid transmission line loss.

[0034] Specifically, the data analysis module calculates the line evaluation value of the power grid transmission line loss degree according to the following formula, setting: ; Among them, P represents the line evaluation value of the loss degree of the power grid transmission line, Ai represents the vibration amplitude obtained by the i-th detection of the vibration sensor, Ui represents the voltage value obtained by the i-th detection of the voltage sensor, Ii represents the current value obtained by the i-th detection of the current sensor, and n represents the number of detections within a period of time.

[0035] Specifically, the data processing module determines the adjustment mode of the line transmission process according to the comparison result of the preset line evaluation value and the line evaluation difference of the line evaluation value and the preset line evaluation difference of 0.2 under the condition that the data analysis module determines that the loss degree of the power grid transmission line is unqualified; If the line evaluation difference is less than or equal to the preset line evaluation difference, determining to reduce the current in the power grid transmission line; If the line evaluation difference is greater than the preset line evaluation difference, determining to increase the voltage in the power grid transmission line; The line evaluation difference is the difference between a preset line evaluation value and the line evaluation value.

[0036] In the embodiment of the present invention, the preset line evaluation difference is 0.2, and the preset line evaluation difference is obtained by averaging the historical line evaluation differences. However, the above value is not limited to this, and those skilled in the art may also adjust the value according to actual needs.

[0037] Specifically, the data processing module determines the current reduction coefficient K1 according to the difference between the line evaluation difference and the preset line evaluation difference.

[0038] In the embodiment of the present invention, the reduced current of the power grid transmission line is set to Ic, and Ic=I×K1 is set, where I represents the current of the power grid transmission line, and K1 represents the current reduction coefficient.

[0039] Specifically, the data processing module calculates the current reduction coefficient according to the following formula and sets: ; Wherein, K1 represents the current reduction coefficient, ΔP represents the preset line evaluation difference, and ΔP0 represents the line evaluation difference.

[0040] Specifically, the data processing module determines the voltage increase coefficient K2 according to the difference between the line evaluation difference and the preset line evaluation difference.

[0041] In the embodiment of the present invention, the increased voltage of the power grid transmission line is set to Uc, and Uc=U×K2 is set, wherein U represents the voltage of the power grid transmission line, and K2 represents the voltage increase coefficient.

[0042] Specifically, the data processing module calculates the voltage increase coefficient according to the following formula and sets: ; Among them, K2 represents the voltage increase coefficient, ΔP represents the preset line evaluation difference, and ΔP0 represents the line evaluation difference.

[0043] Specifically, the present invention determines the adjustment method of reducing current or increasing voltage by comparing a preset line evaluation value with a line evaluation difference of the line evaluation value and a preset line evaluation difference, thereby effectively optimizing the operating state of the power grid transmission line under the condition that the loss degree of the power grid transmission line is unqualified, thereby improving the efficiency of the power grid transmission line intelligent detection system.

[0044] Specifically, the data analysis module determines the eligibility of the power grid transmission line loss degree by comparing the coincidence evaluation value calculated based on the slope of the vibration curve of each power grid transmission line segment and the slope of the line loss curve with the preset coincidence evaluation value of 0.87 in the second detection mode; If the overlap evaluation value is less than or equal to the preset overlap evaluation value, it is determined that the loss degree of the power grid transmission line is unqualified; If the overlap evaluation value is greater than the preset overlap evaluation value, it is determined that the loss degree of the power grid transmission line is qualified; In an embodiment of the present invention, a preset coincidence evaluation value is 0.87. The preset coincidence evaluation value is obtained by calculating the average value of the coincidence evaluation values ​​in several historical power supply cycles under the condition of stable power supply in several historical power supply cycles. However, the above value is not limited to this. Technical personnel in this field may also adjust the value according to actual needs. The stable power supply condition includes a voltage fluctuation less than a preset voltage fluctuation and a current fluctuation less than a preset current fluctuation. The preset voltage fluctuation is 5%, and the preset current fluctuation is 8%.

[0045] Specifically, the present invention determines the eligibility of the loss degree of the power grid transmission line by comparing the overlap evaluation value obtained by calculating the segmented slope of the power grid transmission line with the preset overlap evaluation value, thereby achieving the detection accuracy of the eligibility of the loss degree of the power grid transmission line, thereby improving the accuracy of the intelligent detection system for power grid transmission line loss.

[0046] Specifically, the data analysis module calculates the overlap evaluation value according to the following formula, setting: ; Wherein, Q represents the overlap evaluation value obtained by calculating the segment slope of each power transmission line, and Ws j Indicates the slope of the jth vibration curve, Ys j It represents the slope of the loss rate curve of the j-th section of the power grid line, and m represents that the power grid transmission line is divided into m sections.

[0047] Specifically, under the condition that the loss degree of the power transmission line of the power grid is unqualified, the data analysis module determines the adjustment mode of the power transmission line transmission process of the power grid transmission line according to the comparison result of the coincidence evaluation value calculated by the segmented slope of each power transmission line of the power grid and the coincidence evaluation difference of the preset coincidence evaluation value and the preset coincidence evaluation difference of 0.18; If the difference is less than or equal to the preset overlap evaluation difference, it is determined to increase the voltage of the power grid transmission line to a corresponding value with a voltage regulation coefficient of 1.04; If the difference is greater than the preset overlap evaluation difference, it is determined to increase the detection period in the power grid transmission line to a corresponding value by a period adjustment coefficient of 1.07; The difference is a difference between the overlap evaluation value of the power grid transmission line loss degree and a preset overlap evaluation value.

[0048] In the embodiment of the present invention, the preset coincidence evaluation difference value is 0.18, and the preset coincidence evaluation difference value is obtained by averaging several historical coincidence evaluation differences, but the above value is not limited thereto, and technicians in this field may also adjust the value according to actual needs.

[0049] In the embodiment of the present invention, the increased voltage of the power grid transmission line is set to Uz, and Uz=U×Kd is set, wherein U represents the voltage of the power grid transmission line, and Kd represents the voltage regulation coefficient.

[0050] In the embodiment of the present invention, the increased detection period of the power grid transmission line is set to Tz, and Tz=T×Kc is set, wherein T represents the detection period of the power grid transmission line, and Kc represents the period adjustment coefficient.

[0051] Specifically, the present invention determines the adjustment method of increasing the voltage or increasing the detection period by comparing the coincidence evaluation value obtained by calculating the segmented slope of each power grid transmission line with the coincidence evaluation difference of the preset coincidence evaluation value and the preset coincidence evaluation difference, so as to optimize the power grid transmission line intelligent detection system according to different situations, thereby improving the efficiency of the power grid transmission line intelligent detection system.

[0052] Specifically, the power compensation module determines whether to perform power compensation on the power grid transmission line according to the comparison result between the meteorological state evaluation value and the preset meteorological state evaluation value 0.83; If the meteorological state evaluation value is less than a preset meteorological state evaluation value, determining to perform power compensation on the power grid transmission line; If the meteorological state evaluation value is greater than or equal to a preset meteorological state evaluation value, determining not to perform power compensation on the power grid transmission line; In the embodiment of the present invention, the preset meteorological state evaluation value is 0.83. The preset meteorological state evaluation value is obtained by averaging several historical meteorological state evaluation values. However, the above value is not limited to this. Technical personnel in this field can also adjust the value according to actual needs.

[0053] Specifically, the present invention determines whether to perform power compensation on the power grid transmission line by comparing the meteorological state evaluation value with the preset meteorological state evaluation value, so as to realize that the intelligent detection system of the power grid transmission line is adjusted according to meteorological conditions to improve the power grid transmission efficiency, thereby further improving the detection accuracy of the intelligent detection system of the power grid transmission line.

[0054] Specifically, the power compensation module calculates the meteorological state evaluation value according to the following formula and sets: ; Wherein, S represents the meteorological state evaluation value, Ti represents the temperature value obtained by the temperature sensor for the i-th time, and T 0 represents the preset temperature value, Hi represents the humidity value obtained by the humidity sensor for the i-th time, and H 0 Indicates the preset humidity value, and n indicates the number of detections within a period of time.

[0055] Specifically, under the condition that the power compensation module performs power compensation on the power grid transmission line, the data processing module determines the power compensation coefficient K3 according to the comparison result between the preset meteorological state evaluation value and the difference between the meteorological state evaluation value and the preset difference 0.1.

[0056] In the embodiment of the present invention, the power of the power grid transmission line after compensation is set to Pc, and Pc=P×K3 is set, wherein P represents the power of the power grid transmission line, and K3 represents the power compensation coefficient.

[0057] Specifically, the power compensation module calculates the power compensation coefficient according to the following formula and sets: ; Among them, K3 represents the power compensation coefficient, S represents the preset meteorological state evaluation value, and S0 represents the meteorological state evaluation value.

[0058] Among them, the preset difference value is 0.18, and the preset difference value is obtained by averaging several historical preset differences, but the above value is not limited to this, and technical personnel in this field can also adjust the value according to actual needs.

[0059] Specifically, the data processing module determines the change of vibration amplitude based on the vibration monitoring after power compensation. If the change of vibration amplitude of the power grid transmission line decreases, it is determined that the loss degree of the power grid transmission line after power compensation is qualified; if the change of vibration amplitude increases, it is determined that the loss degree of the power grid transmission line after power compensation is unqualified, and the current reduction coefficient K1 is increased.

[0060] Specifically, the data processing module determines the increased current reduction coefficient K1 according to the comparison result of the relative difference between the vibration amplitude change and the preset vibration amplitude change and the preset relative difference 0.5 under the condition that the vibration amplitude change increases; If the relative difference is less than or equal to the preset relative difference, it is determined to increase the current reduction coefficient K1 to a corresponding value using the first preset increase adjustment coefficient; If the relative difference is greater than the preset relative difference, it is determined to increase the current reduction coefficient K1 to a corresponding value using a second preset increase adjustment coefficient; The relative difference is the relative difference between the vibration amplitude change and the preset vibration amplitude change.

[0061] In the embodiment of the present invention, the preset relative difference is 0.5, and the preset relative difference is obtained by taking the average value of several historical relative differences, but the above value is not limited to this, and those skilled in the art can also adjust the value according to actual needs.

[0062] In an embodiment of the present invention, the increased current reduction coefficient K1 is set to K1z, and K1z=K1×Cr is set, wherein K1 represents the current reduction coefficient, Cr represents the rth preset increase adjustment coefficient, r is 1 or 2, C1 represents the first preset increase adjustment coefficient, and E2 represents the second preset increase adjustment coefficient.

[0063] Specifically, the data acquisition module determines the eligibility of the power loss based on the comparison result of the power loss amount in the power grid transmission line between the power grid node and the next power grid node and the power loss amount in the preset line 0.13; If the power loss amount in the line is less than or equal to the power loss amount in the preset line, it is determined that the power loss is qualified; If the power loss amount in the line is greater than the power loss amount in the preset line, it is determined that the power loss is unqualified.

[0064] In the embodiment of the present invention, the power loss amount in the preset line is taken as 0.13, and the power loss amount in the preset line is obtained by averaging the power loss amounts in several historical lines, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0065] Specifically, the data acquisition module calculates the power loss in the line according to the following formula, set: ; Wherein, F represents the line loss, R represents the resistance of the power grid transmission line, Im represents the current of the power grid transmission line, and t represents the operation time of the power grid transmission line.

[0066] Specifically, under the condition that the data acquisition module determines that the power loss is unqualified, the data processing module determines the adjustment method of the power transmission line power loss degree according to the comparison result of the power loss amount in the power grid transmission line and the first power loss amount ratio of the preset power loss amount in the power grid transmission line and the preset first power loss amount ratio of 1.05; If the first power loss ratio is less than or equal to the preset first power loss ratio, determine to increase the preset line evaluation value or the preset coincidence evaluation value by the first preset power adjustment coefficient of 1.04; If the first power loss ratio is greater than the preset first power loss ratio, it is determined to increase the preset line evaluation value or the preset coincidence evaluation value by the second preset power adjustment coefficient of 1.07; In an embodiment of the present invention, the preset first power loss ratio is set to 1.05. The preset first power loss ratio is obtained by averaging several historical first power loss ratios. However, the above value is not limited to this. Technical personnel in this field can also adjust the value according to actual needs.

[0067] In an embodiment of the present invention, the increased preset line evaluation value is set to Pz, and Pz=Py×Et is set, wherein Py represents the preset line evaluation value, Et represents the tth preset power regulation coefficient, t is 1 or 2, E1 represents the first preset power regulation coefficient, and E2 represents the second preset power regulation coefficient.

[0068] In an embodiment of the present invention, the increased preset coincidence evaluation value is set to Qz, and Qz=Qy×Et is set, wherein Qy represents the preset coincidence evaluation value, Et represents the tth preset power adjustment coefficient, t is 1 or 2, E1 represents the first preset power adjustment coefficient, and E2 represents the second preset power adjustment coefficient.

[0069] Specifically, the present invention determines the eligibility of power loss by comparing the power loss amount with the power loss amount in the preset line, thereby improving the detection accuracy of the power loss situation of the power grid transmission line by the intelligent detection system. The adjustment method is determined according to the comparison result of the first power loss amount ratio of the power loss amount to the power loss amount in the preset line and the preset first power loss amount ratio, thereby improving the efficiency of the intelligent detection system.

[0070] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent detection system for power grid transmission line loss, characterized in that: include: A data acquisition module, which is used to acquire data of a power transmission line, including a vibration sensor arranged on the power transmission line to detect vibration information of the power transmission line, a current sensor arranged on the power transmission line to detect current information of the power transmission line, a temperature sensor arranged on the power transmission line to detect temperature of the power transmission line, and a humidity sensor arranged on the power transmission line to detect humidity of the power transmission line; A detection mode determination module, which is connected to the data acquisition module, is used to determine the importance of the power grid transmission line based on the associated characteristics of a number of power supply processes, determine the line evaluation value of the line loss degree according to the importance, or determine the overlap between the vibration curve of the line and the line loss curve to determine the power grid transmission line loss degree; A data analysis module, which is connected to the detection mode determination module and the data acquisition module respectively, and is used to determine the eligibility of the power grid transmission line loss degree based on the comparison result of the line evaluation value determined by the importance degree with the preset line evaluation value or the comparison result of the coincidence evaluation value with the preset coincidence evaluation value; A data processing module connected to the data analysis module is used to determine the adjustment of several parameters in the power grid transmission line according to the line evaluation difference or the coincidence evaluation difference under the condition that the line loss degree is unqualified, wherein the several parameters include current, voltage or detection cycle; A power compensation module is connected to the data acquisition module and the data processing module, and is used to determine power compensation for the power grid transmission line based on the meteorological state evaluation value, and to determine the correction of the current in the power grid transmission line based on the change of vibration amplitude on the power grid transmission line after power compensation.

2. The intelligent detection system for power grid transmission line loss according to claim 1, characterized in that: The data acquisition module determines that the power grid transmission line loss degree is unqualified based on a comparison result that the line evaluation value of the power grid transmission line loss degree is less than or equal to the preset line evaluation value under the condition that the importance evaluation value is less than or equal to the preset importance evaluation value.

3. The intelligent detection system for power grid transmission line loss according to claim 1, characterized in that: The data acquisition module determines that the power grid transmission line loss degree is unqualified based on the comparison result that the coincidence evaluation value calculated based on the segmented slope of each power grid line is less than or equal to the preset coincidence evaluation value under the condition that the importance evaluation value is greater than the preset importance evaluation value.

4. The intelligent detection system for power grid transmission line loss according to claim 2, characterized in that: Under the condition that the data analysis module determines that the loss degree of the power grid transmission line is unqualified, the data processing module determines to reduce the current in the power grid transmission line by the current reduction coefficient based on the comparison result that the line evaluation difference is less than or equal to the preset line evaluation difference, wherein the line evaluation difference is the difference between the preset line evaluation value and the line evaluation value.

5. The intelligent detection system for power grid transmission line loss according to claim 2, characterized in that: The data processing module determines to increase the voltage in the power grid transmission line by a voltage increase coefficient based on a comparison result that the line evaluation difference is greater than a preset line evaluation difference, under the condition that the data analysis module determines that the power grid transmission line loss degree is unqualified.

6. The intelligent detection system for power grid transmission line loss according to claim 3, characterized in that: The data analysis module determines, under the condition that the loss degree of the power grid transmission line is unqualified, that the voltage of the power grid transmission line is increased by the voltage adjustment coefficient based on the comparison result that the coincidence evaluation difference is less than or equal to the preset coincidence evaluation difference, wherein the coincidence evaluation difference is the difference between the coincidence evaluation value and the preset coincidence evaluation value.

7. The intelligent detection system for power grid transmission line loss according to claim 3, characterized in that: The data analysis module determines to increase the detection period of the power grid transmission line by the period adjustment coefficient based on the comparison result that the overlap evaluation difference is greater than the preset overlap evaluation difference under the condition that the loss degree of the power grid transmission line is unqualified.

8. The intelligent detection system for power grid transmission line loss according to claim 1, characterized in that: The power compensation module determines the power compensation coefficient according to the comparison result that the meteorological state evaluation value is less than the preset meteorological state evaluation value to perform power compensation on the power grid transmission line, determines that the loss degree of the power grid transmission line after power compensation is unqualified based on the increase in the vibration amplitude change after power compensation, and corrects the current reduction coefficient.

9. The intelligent detection system for power grid transmission line loss according to claim 1, characterized in that: The data processing module determines a comparison result that a first power loss ratio is less than or equal to a preset first power loss ratio under the condition that the power loss in the power transmission line between the power grid node and the next power grid node is less than or equal to the power loss in the preset line, and increases a preset line evaluation value or a preset overlap evaluation value with a first preset power adjustment coefficient.

10. The intelligent detection system for power grid transmission line loss according to claim 9, characterized in that: The data processing module determines a comparison result that a first power loss ratio is greater than a preset first power loss ratio under the condition that the power loss in the power transmission line between the power grid node and the next power grid node is less than or equal to the power loss in the preset line, and increases a preset line evaluation value or a preset overlap evaluation value with a second preset power adjustment coefficient.

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