Power grid information analysis and verification processing device and method based on polymorphism

Abstract

A multi-state-based power grid information analysis and verification processing device and method are provided. The device and method obtain the complementary value of the voltage value of the starting urban power grid at each missing time point according to the ratio of the unreasonable amplitude values ​​of the reference time points before and after each missing time point, the voltage value of the urban power grid at the previous target reference time point and the voltage value of the urban power grid at the subsequent target reference time point; obtain the complementary value of the voltage value of the final urban power grid at each missing time point, and perform complementary analysis on the voltage value of the urban power grid at the missing time point through the voltage value change attribute of the urban power grid at the peripheral sampling time point of each missing time point, and combine the change attribute of the current value of the urban power grid to obtain a complete urban power grid information queue. In this way, when the Savitzky-Golay method is used to perform clutter removal on the urban power grid information queue, it will not be disturbed by the missing time point, so that the urban power grid information after the clutter value is removed can accurately represent the urban power grid information.

Description

Technical Field

[0001] The present invention belongs to the technical field of power grid information analysis and verification processing, and specifically relates to a power grid information analysis and verification processing device and method based on polymorphism. Background Art

[0002] Large and medium-sized cities and large industrial and mining areas transmit and distribute electric energy to users through power networks. The power network is called the urban power grid, which consists of transmission and distribution lines, substations and distribution stations. The power supply facilities of the urban power grid are mainly substations and transmission and distribution lines. Saving land is the primary restriction on urban substations. Substations are mostly indoor. Sometimes, in order to coordinate with the surrounding environment, it is necessary to build underground substations, and it is necessary to give priority to the use of complete sets of distribution equipment and new equipment (such as SF6 fully enclosed combined electrical appliances (GIS), vacuum circuit breakers, etc.). There are two types of transmission and distribution lines: overhead lines and underground cables. Underground cables are widely used in the central areas of large cities and key tourist cities. In order to reduce the corridor area, urban high-voltage overhead distribution lines can use double circuits or be erected on the same pole as medium-voltage distribution lines, or use narrow-base iron towers.

[0003] Monitoring of urban power grid information is also necessary. As mentioned in the prior art solution with patent publication number "CN218335434U", a city power grid platform detection system is a monitoring system for urban power grid information. Specifically, the alarm unit, current monitoring module and voltage monitoring module are all connected to the processing unit. The current monitoring module and the voltage monitoring module are respectively used to sample the voltage value and the current value of the urban power grid and transmit them to the processing unit. The processing unit is used to compare the collected voltage value of the urban power grid or the current value of the urban power grid with the pre-set voltage limit value or current limit value. If the collected voltage value of the urban power grid or the current value of the urban power grid exceeds the pre-set voltage limit value or current limit value, the processing unit will let the alarm unit sound an alarm, thereby achieving monitoring of urban power grid information. The voltage limit value or the current limit value is the urban power grid information.

[0004] On the other hand, before comparing the collected urban power grid voltage value with the previously set voltage limit value, a noise value will be generated due to the interference of noise, and the noise value will make the sampled urban power grid voltage value inaccurate, which is not conducive to comparing the urban power grid information with the previously set voltage limit value or current limit value; and the current method for clearing noise values ​​of urban power grid information is the Savitzky-Golay method, which can continuously perform noise value clearing processing on the collected urban power grid information in real time.

[0005] When the collected urban power grid information is cleared of noise values, the urban power grid information sampled by the current monitoring module and the voltage monitoring module may be lost due to errors during information transmission or when the processing unit receives the urban power grid information. Therefore, when the Savitzky-Golay method is used to clear the noise values ​​of the urban power grid information, reasonable information may be cleared as noise values, making it difficult for the urban power grid information after clearing the noise values ​​to be accurately compared with the voltage limit value or current limit value set in advance, which is not conducive to achieving monitoring of the urban power grid information. Summary of the invention

[0006] In order to solve the defects existing in the prior art, the present invention proposes a power grid information analysis and verification processing device and method based on polymorphism. According to the ratio of the unreasonable amplitudes of the reference time points before and after each missing time point, the voltage value of the urban power grid at the previous target reference time point and the voltage value of the urban power grid at the subsequent target reference time point, the complementary value of the voltage value of the starting urban power grid at each missing time point is obtained; according to the current value of the urban power grid, the complementary value of the voltage value of the starting urban power grid at each missing time point is calibrated to obtain the complementary value of the voltage value of the last urban power grid at each missing time point, and the voltage value change attribute of the urban power grid at the surrounding sampling time point of each missing time point is combined with the change attribute of the current value of the urban power grid to perform complementary analysis on the voltage value of the urban power grid at the missing time point, so as to obtain a complete urban power grid information queue. In this way, when the Savitzky-Golay method is used to remove the clutter value of the urban power grid information queue, it will not be disturbed by the missing time point, so that the urban power grid information after the clutter value is removed can accurately represent the urban power grid information.

[0007] The present invention uses the following technical solutions.

[0008] A method for analyzing and checking power grid information based on polymorphism, comprising:

[0009] The current monitoring module and the voltage monitoring module respectively sample the voltage value and the current value of the urban power grid and transmit them to the processing unit. The processing unit performs cleaning and processing on the collected voltage value or current value of the urban power grid, and then compares the voltage value or current value of the urban power grid after cleaning and processing with the voltage limit value or current limit value set in advance. If the voltage value or current value of the urban power grid after cleaning and processing exceeds the voltage limit value or current limit value set in advance, the processing unit makes the alarm unit alarm. The voltage value or current value of the urban power grid is the urban power grid information.

[0010] The method for the processing unit to perform cleaning and processing on the collected voltage value or current value of the urban power grid includes:

[0011] Step 1, obtain the city power grid information queue;

[0012] Step 2, obtain the unreasonable amplitude of each reference time point of each lost time point;

[0013] Step 3, calibrating the supplementary value of the voltage value of the starting city power grid at each missing time point, and obtaining the supplementary value of the voltage value of the final city power grid at each missing time point;

[0014] Step 4, supplement the voltage value of the urban power grid at the time of loss according to the supplement value of the final voltage value of the urban power grid, and supplement the current value of the urban power grid at the time of loss according to the supplement value of the current value of the starting urban power grid obtained at the time of loss when the current value is actually lost, so as to obtain a complete urban power grid information queue, and clear the noise value of the complete urban power grid information queue. The urban power grid information in the urban power grid information queue after clearing the noise value is the cleaned urban power grid information.

[0015] Preferably, in Step 1, the method for obtaining the city power grid information queue includes:

[0016] Each interval of 2s is a sampling point. The current monitoring module and the voltage monitoring module sample the voltage value and the current value of the urban power grid in sequence respectively. After a total of 60 minutes of sampling, the voltage value and the current value of the urban power grid at each sampling point are transmitted to the processing unit in the order of sampling. The processing unit arranges the collected voltage values ​​and current values ​​of the urban power grid in sequence according to the order to form an urban power grid information queue.

[0017] Preferably, in Step 1, the city grid information queue includes voltage values ​​and current values ​​of the city grid at multiple sampling time points; for any sampling time point, if the voltage value of the city grid at the sampling time point is NULL, the sampling time point is defined as a lost time point.

[0018] Preferably, Step 2 specifically includes: setting a near zone parameter b in advance;

[0019] Then, for any missing time point, the b sampling time points before the missing time point and the b sampling time points after the missing time point are defined as the reference time points of the missing time point;

[0020] Here, if the number of sampling time points before the missing time point is insufficient, a larger number of sampling time points are selected after the missing time point as the reference time points of the missing time point, so that the number of reference time points of the missing time point is 2b.

[0021] Preferably, Step 2 specifically further includes: setting a fitting parameter b1 in advance;

[0022] Then, for the j-th sampling time point, the amount obtained by subtracting the voltage value of the urban power grid between the j-1-th sampling time point and the j-th sampling time point is taken as the adjacent voltage reduction of the j-th sampling time point; for the n-th reference time point of the y-th missed time point; the modulus of the amount obtained by subtracting the voltage value of the urban power grid between each reference time point of the y-th missed time point and the n-th reference time point is defined as the reduction of the n-th reference time point, and all the reductions of the n-th reference time point are obtained, and are arranged from low to high according to the value of the reduction, to obtain the reduction queue of the n-th reference time point, and all the reference time points corresponding to the first b1 reductions in the reduction queue of the n-th reference time point are defined as the information fitting time point of the n-th reference time point;

[0023] According to the difference in adjacent voltage reduction between each benchmark time point of each missed time point and other benchmark time points, plus the difference in voltage value of the urban power grid between each benchmark time point and its information-matching time point, the unreasonable amplitude of each benchmark time point of each missed time point is obtained.

[0024] Preferably, the calculation equation for obtaining the unreasonable amplitude of the nth reference time point at the yth loss time point is:

[0025]

[0026] In the equation, D y,n The unreasonable amplitude of the nth reference time point representing the yth lost time point; W y,n The voltage value of the urban power grid at the nth reference time point representing the yth missing time point; The average voltage value of the urban power grid at all reference time points representing the yth missed time point; g y,n The voltage decrease adjacent to the nth reference time point representing the yth missing time point; The average of the adjacent voltage reductions of all reference time points representing the yth missed time point; L y,n The total number of time points at which all information of the nth reference time point fits the yth lost time point; W y,n,l The voltage value of the urban power grid at the lth information matching time point of the nth reference time point representing the yth lost time point.

[0027] Preferably, Step 3 specifically includes: for the yth lost time point, in the urban power grid information queue, taking the sampling time point adjacent to the previous sampling time point of the yth lost time point as the previous target reference time point of the yth lost time point, and taking the sampling time point adjacent to the next sampling time point of the yth lost time point as the next target reference time point of the yth lost time point; here, the sampling time point adjacent to the previous sampling time point is the previous time point of a pair of adjacent sampling time points of the yth lost time point, and the sampling time point adjacent to the next sampling time point is the next time point of a pair of adjacent sampling time points of the yth lost time point;

[0028] Define all reference time points before the yth lost time point as the front reference time point queue of the yth lost time point, and define all reference time points after the yth lost time point as the back reference time point queue of the yth lost time point;

[0029] In the previous reference time point queue of the yth lost time point, the reciprocal of the duration between the vth reference time point and the yth lost time point is defined as the duration value of the vth reference time point, and the ratio obtained by dividing the duration value of the vth reference time point by the amount obtained by adding the duration values ​​of all reference time points in the previous reference time point queue of the yth lost time point is defined as the duration ratio of the vth reference time point; in the subsequent reference time point queue of the yth lost time point, the reciprocal of the duration between the pth reference time point and the yth lost time point is defined as the duration value of the pth reference time point, and the ratio obtained by dividing the duration value of the pth reference time point by the amount obtained by adding the duration values ​​of all reference time points in the subsequent reference time point queue of the yth lost time point is defined as the duration ratio of the vth reference time point;

[0030] The amount obtained by adding up the unreasonable amplitudes of all the benchmark time points in the previous benchmark time point queue of the yth lost time point is defined as the statistic one of the yth lost time point; the amount obtained by adding up the unreasonable amplitudes of all the benchmark time points in the subsequent benchmark time point queue of the yth lost time point is defined as the statistic two of the yth lost time point; the amount obtained by adding the statistic one and the statistic two is defined as the final statistic; the ratio obtained by dividing the statistic one by the final statistic is used as the unreasonable critical degree of the previous benchmark of the yth lost time point; the ratio obtained by dividing the statistic two by the final statistic is used as the unreasonable critical degree of the subsequent benchmark of the yth lost time point;

[0031] According to the ratio of the unreasonable amplitudes of the reference time points before and after each missed time point, the voltage value of the urban power grid at the previous target reference time point and the voltage value of the urban power grid at the subsequent target reference time point, the complementary value of the voltage value of the starting urban power grid at each missed time point is obtained.

[0032] Preferably, the calculation equation for obtaining the supplementary value of the voltage value of the starting city power grid at the yth missing time point is:

[0033]

[0034] In the equation, AD y The complement value representing the voltage value of the starting city power grid at the yth missing time point; AD1 y The complement value representing the voltage value of the previous starting city power grid at the yth missing time point; AD2 y The complement value of the voltage value of the post-starting city power grid representing the yth missed time point; W1 yThe voltage value of the urban power grid at the previous reference time point representing the yth lost time point; W2 y The voltage value of the urban power grid at the target reference time point after the yth lost time point; V y represents the total number of all reference time points in the previous reference time point queue of the yth lost time point; P y g represents the total number of all reference time points in the post-reference time point queue of the yth lost time point; y,v represents the adjacent voltage decrease of the vth reference time point in the previous reference time point queue of the yth lost time point; e y,v g represents the ratio of the duration of the vth reference time point in the previous reference time point queue of the yth lost time point; y,p The voltage decrease of the adjacent reference time point p in the post-reference time point queue representing the yth missed time point; e y,p The ratio of the duration of the pth reference time point in the post-reference time point queue representing the yth lost time point; RD1 y Characterizes the unreasonable criticality of the previous benchmark at the yth loss point; RD2 y Characterizes the unreasonable criticality of the post-benchmark at the yth loss time point.

[0035] Preferably, Step 3 specifically further includes: similarly, according to the method for obtaining the supplementary value of the voltage value of the starting city power grid at each missing time point, obtaining the supplementary value of the current value of the starting city power grid at each sampling time point and the missing time point; for any missing time point, the amount obtained by subtracting the current value of the city power grid actually collected at the missing time point from the supplementary value of the current value of the starting city power grid is used as the current value difference amount of the city power grid at the missing time point; for any sampling time point, the amount obtained by subtracting the current value of the city power grid actually collected at the sampling time point from the supplementary value of the current value of the starting city power grid is used as the current value difference amount of the city power grid at the sampling time point;

[0036] Then, for the yth lost time point, in the urban power grid information queue, the sampling time point at which the current value difference of the urban power grid is the same as the current value difference of the urban power grid at the yth lost time point is defined as the target reference time point two of the yth lost time point; the average of the adjacent voltage decreases of all the target reference time points of the yth lost time point is defined as the correction value of the voltage value of the urban power grid at the yth lost time point, and the value obtained by adding the correction value of the voltage value of the urban power grid at the yth lost time point and the complement value of the voltage value of the starting urban power grid at the yth lost time point is used as the complement value of the voltage value of the final urban power grid at the yth lost time point.

[0037] Preferably, Step 4 specifically includes: after obtaining a complete urban power grid information queue, using the Savitzky-Golay method to clear the clutter value of the complete urban power grid information queue, and the urban power grid information in the urban power grid information queue after clearing the clutter value is the cleaned urban power grid information.

[0038] A multi-state-based power grid information analysis and verification processing device, comprising:

[0039] The alarm unit, current monitoring module and voltage monitoring module are all connected to the processing unit. The current monitoring module and the voltage monitoring module are used to sample the voltage value and the current value of the urban power grid respectively and transmit them to the processing unit. The processing unit is used to perform cleaning and processing on the collected voltage value or current value of the urban power grid, and then compare the voltage value or current value of the urban power grid after cleaning and processing with the voltage limit value or current limit value set in advance. If the voltage value or current value of the urban power grid after cleaning and processing exceeds the voltage limit value or current limit value set in advance, the processing unit will let the alarm unit alarm. The voltage limit value or current limit value is the urban power grid information.

[0040] The modules running on the processing unit include:

[0041] A queue module, which is used to obtain the city power grid information queue;

[0042] An amplitude module, which is used to obtain the unreasonable amplitude of each reference time point of each lost time point;

[0043] A completion module, which is used to calibrate the completion value of the voltage value of the starting urban power grid at each missing time point, and obtain the completion value of the voltage value of the final urban power grid at each missing time point;

[0044] A clearing module is used to supplement the voltage value of the urban power grid at the time of loss according to the supplement value of the voltage value of the last urban power grid, and to supplement the voltage value of the urban power grid at the time of loss according to the supplement value of the current value of the starting urban power grid obtained at the time of loss when the current value is actually lost, so as to obtain a complete urban power grid information queue, and clear the clutter value on the complete urban power grid information queue. The urban power grid information in the urban power grid information queue after the clutter value is cleared is the urban power grid information after cleaning.

[0045] The beneficial effects of the present invention are that, compared with the prior art, the technical effects of the present invention include:

[0046] According to the ratio of the unreasonable amplitudes of the benchmark time points before and after each missing time point, the voltage value of the urban power grid at the previous target benchmark time point and the voltage value of the urban power grid at the subsequent target benchmark time point, the complementary value of the voltage value of the starting urban power grid at each missing time point is obtained; the complementary value of the voltage value of the starting urban power grid at each missing time point is calibrated according to the current value of the urban power grid to obtain the complementary value of the voltage value of the final urban power grid at each missing time point, and the voltage value change attribute of the urban power grid at the surrounding sampling time points of each missing time point is combined with the change attribute of the current value of the urban power grid to perform complementary analysis on the voltage value of the urban power grid at the missing time point to obtain a complete urban power grid information queue, so that when the Savitzky-Golay method is used to remove the noise value of the urban power grid information queue, it will not be disturbed by the missing time point, so that the urban power grid information after removing the noise value can accurately represent the urban power grid information. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a flow chart of the method for analyzing and verifying power grid information based on polymorphism described in the present invention;

[0048] Figure 2 It is a partial structural diagram of the polymorphic-based power grid information analysis, verification and processing device described in the present invention. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely expressed in combination with the drawings in the embodiments of the present invention. The embodiments expressed in this application are only part of the embodiments of the present invention, not all of them. According to the spirit of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the protection scope of the present invention.

[0050] like Figure 1 As shown, the present invention provides a method for analyzing and verifying power grid information based on polymorphism, comprising:

[0051] The current monitoring module and the voltage monitoring module respectively sample the voltage value and the current value of the urban power grid and transmit them to the processing unit. The processing unit performs cleaning and processing on the collected voltage value or current value of the urban power grid, and then compares the voltage value or current value of the urban power grid after cleaning and processing with the voltage limit value or current limit value set in advance. If the voltage value or current value of the urban power grid after cleaning and processing exceeds the voltage limit value or current limit value set in advance, the processing unit will let the alarm unit alarm, so as to achieve the monitoring of the urban power grid information. The voltage value or current value of the urban power grid is the urban power grid information;

[0052] The processing unit performs a method for cleaning and disposing the collected voltage value or current value of the urban power grid, which is run on the processing unit and includes:

[0053] Step 1, obtain the city power grid information queue;

[0054] During the period when the current monitoring module and the voltage monitoring module sample and transmit the urban power grid information to the processing unit, the urban power grid information sampling scene often has factors such as magnetic fields and clutter disturbances, which will have an adverse effect on the completeness of the urban power grid information sampling. That is, during the transmission of urban power grid information, information transmission is often interrupted due to communication obstacles, communication standard errors or circuit defects, resulting in the loss of some urban power grid information. During the period when the processing unit receives the urban power grid information, it is often accompanied by defects such as circuit abnormalities and process errors, resulting in the damage and loss of some urban power grid information. Therefore, in this application, it is necessary to perform completion operations on the information points that are lost due to the above factors.

[0055] In a preferred but non-limiting embodiment of the present invention, in Step 1, the method for obtaining the city power grid information queue includes:

[0056] Each interval of 2s is a sampling point. The current monitoring module and the voltage monitoring module sample the voltage value and the current value of the urban power grid in sequence respectively. After a total of 60 minutes of sampling, the voltage value and the current value of the urban power grid at each sampling point are transmitted to the processing unit in the order of sampling. The processing unit arranges the collected voltage values ​​and current values ​​of the urban power grid in sequence according to the order to form an urban power grid information queue.

[0057] In a preferred but non-limiting embodiment of the present invention, in Step 1, the urban power grid information queue includes voltage values ​​and current values ​​of the urban power grid at multiple sampling points; for any sampling point in time, if the voltage value of the urban power grid at the sampling point in time is NULL, the sampling point in time is defined as a lost point in time.

[0058] Therefore, the city power grid information queue is obtained through the above method.

[0059] Step 2, obtain the unreasonable amplitude of each reference time point of each lost time point;

[0060] The key to this application is to complete the information at each missing time point, which is based on an overall analysis of the voltage value change attributes of the urban power grid at the surrounding sampling time points of each missing time point combined with the current value change attributes of the urban power grid at the same sampling time point, so as to obtain the reference time point of each missing time point.

[0061] In a preferred but non-limiting embodiment of the present invention, Step 2 specifically includes: setting a near zone parameter b in advance, where b may be fifty;

[0062] Then, for any missing time point, the b sampling time points before the missing time point and the b sampling time points after the missing time point are defined as the reference time points of the missing time point;

[0063] Here, if the number of sampling time points before the missing time point is insufficient, a larger number of sampling time points are selected after the missing time point as the reference time points of the missing time point, so that the number of reference time points of the missing time point is 2b.

[0064] Thus, the overall reference time point of each lost time point is obtained.

[0065] When the urban power grid operates stably without unreasonable voltage fluctuations, the voltage value of the urban power grid will be correspondingly stable. When the sampled voltage value of the urban power grid contains a significant jump value, the voltage value of the urban power grid will often be attributed to unreasonable information, and the unreasonable amplitude will be higher.

[0066] In a preferred but non-limiting embodiment of the present invention, Step 2 specifically further includes: setting a fitting parameter b1 in advance, where b1 may have a value of five;

[0067] Then, for the j-th sampling time point, the amount obtained by subtracting the voltage value of the urban power grid between the j-1-th sampling time point and the j-th sampling time point is taken as the adjacent voltage reduction of the j-th sampling time point; for the n-th reference time point of the y-th missed time point; the modulus of the amount obtained by subtracting the voltage value of the urban power grid between each reference time point of the y-th missed time point and the n-th reference time point is defined as the reduction of the n-th reference time point, and all the reductions of the n-th reference time point are obtained, and are arranged from low to high according to the value of the reduction, to obtain the reduction queue of the n-th reference time point, and all the reference time points corresponding to the first b1 reductions in the reduction queue of the n-th reference time point are defined as the information fitting time point of the n-th reference time point;

[0068] According to the difference in adjacent voltage reduction between each benchmark time point of each missed time point and other benchmark time points, plus the difference in voltage value of the urban power grid between each benchmark time point and its information-matching time point, the unreasonable amplitude of each benchmark time point of each missed time point is obtained.

[0069] In a preferred but non-limiting embodiment of the present invention, the calculation equation for obtaining the unreasonable amplitude of the nth reference time point at the yth loss time point is:

[0070]

[0071] In the equation, Dy,n The unreasonable amplitude of the nth reference time point representing the yth lost time point; W y,n The voltage value of the urban power grid at the nth reference time point representing the yth missing time point; The average voltage value of the urban power grid at all reference time points representing the yth missed time point; g y,n The voltage decrease adjacent to the nth reference time point representing the yth missing time point; The average of the adjacent voltage reductions of all reference time points representing the yth missed time point; L y,n The total number of time points at which all information of the nth reference time point fits the yth lost time point; W y,n,l The voltage value of the urban power grid at the lth information matching time point of the nth reference time point representing the yth lost time point.

[0072] When analyzing the unreasonable amplitude of the benchmark time points of each missed time point, the higher the average of the quotient of the voltage value of the urban power grid at the benchmark time point to be analyzed and the voltage value of the urban power grid at all benchmark time points, the more unreasonable the benchmark time point to be analyzed will be; the higher the average of the quotient of the adjacent voltage reduction of the benchmark time point to be analyzed and the adjacent voltage reduction of all benchmark time points, it means that the probability of the benchmark time point showing a jump is higher, and the higher the authenticity of the voltage value of the urban power grid will be, the more unreasonable it will be; among all the benchmark time points of the missed time points, b1 benchmark time points whose voltage value of the urban power grid is closest to the benchmark time point to be analyzed are selected. If the difference value of the voltage value of the urban power grid between it and the benchmark time point is higher, it means that the benchmark time point to be analyzed is more outlier, the authenticity of the jump is higher, and the authenticity of the voltage value of the urban power grid will be higher, that is, the more unreasonable it will be.

[0073] Therefore, the unreasonable amplitude of each reference time point at each missing time point is obtained through the above method.

[0074] Step 3, calibrating the supplementary value of the voltage value of the starting city power grid at each missing time point, and obtaining the supplementary value of the voltage value of the final city power grid at each missing time point;

[0075] The higher the unreasonable amplitude of each reference time point for each missed time point, the lower the criticality of its comparison value to the missed time point; the information completion operation for the missed time point depends on the voltage values ​​of a pair of reference time points adjacent to and before the missed time point and the average amplitude of the reference time points on both sides of the missed time point, that is, based on the voltage value status of the urban power grid at the reference time point of the missed time point and its unreasonable amplitude, the voltage value of the starting urban power grid of the missed time point is completed, and the unreasonable amplitude of each reference time point is used as the criticality of its reference function in the completion.

[0076] In a preferred but non-limiting embodiment of the present invention, Step 3 specifically includes: for the yth lost time point, in the urban power grid information queue, the sampling time point adjacent to the previous sampling time point of the yth lost time point is used as the previous target reference time point of the yth lost time point, and the sampling time point adjacent to the next sampling time point of the yth lost time point is used as the next target reference time point of the yth lost time point; here, the sampling time point adjacent to the previous sampling time point is the previous time point of a pair of adjacent sampling time points of the yth lost time point, and the sampling time point adjacent to the next sampling time point is the next time point of a pair of adjacent sampling time points of the yth lost time point;

[0077] Define all reference time points before the yth lost time point as the front reference time point queue of the yth lost time point, and define all reference time points after the yth lost time point as the back reference time point queue of the yth lost time point;

[0078] In the previous reference time point queue of the yth lost time point, the reciprocal of the duration between the vth reference time point and the yth lost time point is defined as the duration value of the vth reference time point, and the ratio obtained by dividing the duration value of the vth reference time point by the amount obtained by adding the duration values ​​of all reference time points in the previous reference time point queue of the yth lost time point is defined as the duration ratio of the vth reference time point; in the subsequent reference time point queue of the yth lost time point, the reciprocal of the duration between the pth reference time point and the yth lost time point is defined as the duration value of the pth reference time point, and the ratio obtained by dividing the duration value of the pth reference time point by the amount obtained by adding the duration values ​​of all reference time points in the subsequent reference time point queue of the yth lost time point is defined as the duration ratio of the vth reference time point;

[0079] The amount obtained by adding up the unreasonable amplitudes of all the benchmark time points in the previous benchmark time point queue of the yth lost time point is defined as the statistic one of the yth lost time point; the amount obtained by adding up the unreasonable amplitudes of all the benchmark time points in the subsequent benchmark time point queue of the yth lost time point is defined as the statistic two of the yth lost time point; the amount obtained by adding the statistic one and the statistic two is defined as the final statistic; the ratio obtained by dividing the statistic one by the final statistic is used as the unreasonable critical degree of the previous benchmark of the yth lost time point; the ratio obtained by dividing the statistic two by the final statistic is used as the unreasonable critical degree of the subsequent benchmark of the yth lost time point;

[0080] According to the ratio of the unreasonable amplitudes of the reference time points before and after each missed time point, the voltage value of the urban power grid at the previous target reference time point and the voltage value of the urban power grid at the subsequent target reference time point, the complementary value of the voltage value of the starting urban power grid at each missed time point is obtained.

[0081] In a preferred but non-limiting embodiment of the present invention, the calculation equation for obtaining the supplementary value of the voltage value of the starting city power grid at the yth missing time point is:

[0082]

[0083] In the equation, AD y The complement value representing the voltage value of the starting city power grid at the yth missing time point; AD1 y The complement value representing the voltage value of the previous starting city power grid at the yth missing time point; AD2 y The complement value of the voltage value of the post-starting city power grid representing the yth missed time point; W1 y The voltage value of the urban power grid at the previous reference time point representing the yth lost time point; W2 y The voltage value of the urban power grid at the target reference time point after the yth lost time point; V y represents the total number of all reference time points in the previous reference time point queue of the yth lost time point; P y g represents the total number of all reference time points in the post-reference time point queue of the yth lost time point; y,v represents the adjacent voltage decrease of the vth reference time point in the previous reference time point queue of the yth lost time point; e y,v g represents the ratio of the duration of the vth reference time point in the previous reference time point queue of the yth lost time point; y,p The voltage decrease of the adjacent reference time point p in the post-reference time point queue representing the yth missed time point; e y,p The ratio of the duration of the pth reference time point in the post-reference time point queue representing the yth lost time point; RD1 y Characterizes the unreasonable criticality of the previous benchmark at the yth loss point; RD2 y Characterizes the unreasonable criticality of the post-benchmark at the yth loss time point.

[0084] When calculating the supplementary value of the voltage value of the previous starting urban power grid at the missed time point through the voltage value of the urban power grid at the previous target reference time point, the amount obtained by adding the voltage value of the urban power grid at the previous target reference time point and the change in the voltage value of the urban power grid is used as the supplementary value of the voltage value of the previous starting urban power grid at the missed time point; the amount obtained by subtracting the change in the voltage value of the urban power grid from the voltage value of the subsequent target reference time point is used as the supplementary value of the voltage value of the subsequent starting urban power grid at the missed time point; here, the longer the time between each reference time point and the missed time point, the lower the determination efficiency of the voltage value of the urban power grid for the supplementary value of the voltage value of the starting urban power grid at the missed time point, that is, the lower the criticality of using it as the supplementary value of the voltage value of the starting urban power grid at the missed time point; the higher the unreasonable amplitude of each reference time point, the lower the determination efficiency of the voltage value of the urban power grid for the supplementary value of the voltage value of the starting urban power grid at the missed time point, that is, the lower the criticality of using it as the supplementary value of the voltage value of the starting urban power grid at the missed time point.

[0085] Therefore, the voltage value of the starting city power grid at each missing time point is obtained to complete the task.

[0086] The above method obtains the supplement value of the voltage value of the starting urban power grid by analyzing the change attribute of the voltage value of the urban power grid. However, since the change of the voltage value of the urban power grid itself is different from the change of the current value of the urban power grid, the change of the voltage value of the urban power grid has outliers and limitation effects, which often leads to inaccurate supplement of the voltage value of the starting urban power grid. Therefore, it is necessary to introduce the current value of the urban power grid with some correlation with the voltage value of the urban power grid to perform correction on the voltage value supplement of the starting urban power grid to obtain a more accurate supplement value of the voltage value of the urban power grid.

[0087] In a preferred but non-limiting embodiment of the present invention, Step 3 specifically further includes: similarly, according to the method for obtaining the supplementary value of the voltage value of the starting city power grid at each missing time point, obtaining the supplementary value of the current value of the starting city power grid at each sampling time point (that is, taking the sampling time point as the time point at which the current value of the city power grid is missing, and defining the current value of the city power grid at this time point as NULL regardless of whether it is really missing) and the missing time point (the missing time point is the missing time point of the voltage value of the starting city power grid, and the current value of the city power grid at the missing time point is assumed to be NULL); for any missing time point, the amount obtained by subtracting the current value of the city power grid actually collected at the missing time point from the supplementary value of the current value of the starting city power grid is used as the current value difference amount of the city power grid at the missing time point; for any sampling time point, the amount obtained by subtracting the current value of the city power grid actually collected at the sampling time point from the supplementary value of the current value of the starting city power grid is used as the current value difference amount of the city power grid at the sampling time point;

[0088] There is some correlation between the voltage value of the urban power grid and the current value of the synchronized urban power grid. However, under specific circumstances, the voltage value and the current value are not simply proportional, that is, when the voltage value increases by 10%, the synchronized current value often does not increase by 10%.

[0089] Then, for the yth lost time point, in the urban power grid information queue, the sampling time point at which the current value difference of the urban power grid is the same as the current value difference of the urban power grid at the yth lost time point is defined as the target reference time point two of the yth lost time point; the average of the adjacent voltage decreases of all the target reference time points of the yth lost time point is defined as the correction value of the voltage value of the urban power grid at the yth lost time point, and the value obtained by adding the correction value of the voltage value of the urban power grid at the yth lost time point and the complement value of the voltage value of the starting urban power grid at the yth lost time point is used as the complement value of the voltage value of the final urban power grid at the yth lost time point.

[0090] Therefore, the above method is used to obtain the completed value of the voltage value of the last urban power grid at each missed time point.

[0091] Step 4, supplement the voltage value of the urban power grid at the time of loss according to the supplement value of the last voltage value of the urban power grid, and supplement the current value of the urban power grid at the time of loss according to the supplement value of the current value of the starting urban power grid obtained at the time of loss when the current value is actually lost (that is, the sampling time point corresponding to the lost time point above), so as to obtain a complete urban power grid information queue, and clear the noise value of the complete urban power grid information queue. The urban power grid information in the urban power grid information queue after clearing the noise value is the cleaned urban power grid information.

[0092] In a preferred but non-restrictive implementation of the present invention, Step 4 specifically includes: after obtaining a complete urban power grid information queue, using the Savitzky-Golay method to clear the clutter value of the complete urban power grid information queue, and the urban power grid information in the urban power grid information queue after clearing the clutter value is the cleaned and processed urban power grid information.

[0093] like Figure 2 As shown, the present invention provides a multi-state-based power grid information analysis and verification processing device, comprising:

[0094] The alarm unit, current monitoring module and voltage monitoring module are all connected to the processing unit. The current monitoring module and the voltage monitoring module are used to sample the voltage value and the current value of the urban power grid respectively and transmit them to the processing unit. The processing unit is used to perform cleaning and processing on the collected voltage value or current value of the urban power grid, and then compare the voltage value or current value of the urban power grid after cleaning and processing with the voltage limit value or current limit value set in advance. If the voltage value or current value of the urban power grid after cleaning and processing exceeds the voltage limit value or current limit value set in advance, the processing unit will let the alarm unit alarm, so as to achieve monitoring of urban power grid information. The voltage limit value or current limit value is the urban power grid information;

[0095] The modules running on the processing unit include:

[0096] A queue module, which is used to obtain the city power grid information queue;

[0097] An amplitude module, which is used to obtain the unreasonable amplitude of each reference time point of each lost time point;

[0098] A completion module, which is used to calibrate the completion value of the voltage value of the starting urban power grid at each missing time point, and obtain the completion value of the voltage value of the final urban power grid at each missing time point;

[0099] A clearing module is used to supplement the voltage value of the urban power grid at the time of loss according to the supplement value of the voltage value of the last urban power grid, and to supplement the voltage value of the urban power grid at the time of loss according to the supplement value of the current value of the starting urban power grid obtained at the time of loss when the current value is actually lost, so as to obtain a complete urban power grid information queue, and clear the clutter value on the complete urban power grid information queue. The urban power grid information in the urban power grid information queue after the clutter value is cleared is the urban power grid information after cleaning.

[0100] The beneficial effects of the present invention are that, compared with the prior art, the technical effects of the present invention include:

[0101] According to the ratio of the unreasonable amplitudes of the benchmark time points before and after each missing time point, the voltage value of the urban power grid at the previous target benchmark time point and the voltage value of the urban power grid at the subsequent target benchmark time point, the complementary value of the voltage value of the starting urban power grid at each missing time point is obtained; the complementary value of the voltage value of the starting urban power grid at each missing time point is calibrated according to the current value of the urban power grid to obtain the complementary value of the voltage value of the final urban power grid at each missing time point, and the voltage value change attribute of the urban power grid at the surrounding sampling time points of each missing time point is combined with the change attribute of the current value of the urban power grid to perform complementary analysis on the voltage value of the urban power grid at the missing time point to obtain a complete urban power grid information queue, so that when the Savitzky-Golay method is used to remove the noise value of the urban power grid information queue, it will not be disturbed by the missing time point, so that the urban power grid information after removing the noise value can accurately represent the urban power grid information.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not deviate from the spirit and scope of the present invention should be covered within the protection space of the claims of the present invention.

Claims

1. A method for analyzing and verifying power grid information based on polymorphism, characterized in that: include: The current monitoring module and the voltage monitoring module respectively sample the voltage value and the current value of the urban power grid and transmit them to the processing unit. The processing unit performs cleaning and processing on the collected voltage value or current value of the urban power grid, and then compares the voltage value or current value of the urban power grid after cleaning and processing with the voltage limit value or current limit value set in advance. If the voltage value or current value of the urban power grid after cleaning and processing exceeds the voltage limit value or current limit value set in advance, the processing unit makes the alarm unit alarm. The voltage value or current value of the urban power grid is the urban power grid information. The method for the processing unit to perform cleaning and processing on the collected voltage value or current value of the urban power grid includes: Step 1, obtain the city power grid information queue; Step 2, obtain the unreasonable amplitude of each reference time point of each lost time point; Step 3, calibrating the supplementary value of the voltage value of the starting city power grid at each missing time point, and obtaining the supplementary value of the voltage value of the final city power grid at each missing time point; Step 4, the voltage value of the urban power grid at the time of missing is supplemented according to the supplemented value of the voltage value of the last urban power grid, and the current value of the urban power grid at the time of missing is supplemented according to the supplemented value of the current value of the starting urban power grid obtained at the time of missing when the current value is actually missed, so as to obtain a complete urban power grid information queue, and perform clutter removal on the complete urban power grid information queue. The urban power grid information in the urban power grid information queue after the clutter value is removed is the cleaned urban power grid information; Step 2 specifically includes: setting a fitting parameter b1 in advance; Then, for the j-th sampling time point, the amount obtained by subtracting the voltage value of the urban power grid between the j-1-th sampling time point and the j-th sampling time point is taken as the adjacent voltage reduction of the j-th sampling time point; for the n-th reference time point of the y-th missed time point; the modulus of the amount obtained by subtracting the voltage value of the urban power grid between each reference time point of the y-th missed time point and the n-th reference time point is defined as the reduction of the n-th reference time point, and all the reductions of the n-th reference time point are obtained, and are arranged from low to high according to the value of the reduction, to obtain the reduction queue of the n-th reference time point, and all the reference time points corresponding to the first b1 reductions in the reduction queue of the n-th reference time point are defined as the information fitting time point of the n-th reference time point; According to the difference in adjacent voltage reduction between each benchmark time point of each missed time point and other benchmark time points, plus the difference in voltage value of the urban power grid between each benchmark time point and its information-matching time point, the unreasonable amplitude of each benchmark time point of each missed time point is obtained.

2. The method for analyzing and verifying power grid information based on polymorphism according to claim 1, characterized in that: In Step 1, the method of obtaining the city power grid information queue includes: Each interval of 2s is a sampling point. The current monitoring module and the voltage monitoring module sample the voltage value and the current value of the urban power grid in sequence respectively. After a total of 60 minutes of sampling, the voltage value and the current value of the urban power grid at each sampling point are transmitted to the processing unit in the order of sampling. The processing unit arranges the collected voltage values ​​and current values ​​of the urban power grid in sequence according to the order to form an urban power grid information queue.

3. The method for analyzing and verifying power grid information based on polymorphism according to claim 2, characterized in that: In Step 1, the city grid information queue includes voltage values ​​and current values ​​of the city grid at multiple sampling time points; for any sampling time point, if the voltage value of the city grid at the sampling time point is NULL, the sampling time point is defined as a lost time point.

4. The method for analyzing and verifying power grid information based on polymorphism according to claim 3, characterized in that: Step 2 specifically includes: setting a near zone parameter b in advance; Then, for any missing time point, the b sampling time points before the missing time point and the b sampling time points after the missing time point are defined as the reference time points of the missing time point; Here, if the number of sampling time points before the missing time point is insufficient, a larger number of sampling time points are selected after the missing time point as the reference time points of the missing time point, so that the number of reference time points of the missing time point is 2b.

5. The method for analyzing and verifying power grid information based on polymorphism according to claim 4, characterized in that: The calculation equation for obtaining the unreasonable amplitude of the nth reference time point at the yth lost time point is: In the equation, D y,n The unreasonable amplitude of the nth reference time point representing the yth lost time point; W y,n The voltage value of the urban power grid at the nth reference time point representing the yth missing time point; The average voltage value of the urban power grid at all reference time points representing the yth missed time point; g y,n The voltage decrease adjacent to the nth reference time point representing the yth missing time point; The average of the adjacent voltage reductions of all reference time points representing the yth missed time point; L y,n The total number of time points at which all information of the nth reference time point fits the yth lost time point; W y,n,l The voltage value of the urban power grid at the lth information matching time point of the nth reference time point representing the yth lost time point.

6. The method for analyzing and verifying power grid information based on polymorphism according to claim 5, characterized in that: Step 3 specifically includes: for the yth lost time point, in the urban power grid information queue, the sampling time point adjacent to the previous sampling time point of the yth lost time point is used as the previous target reference time point of the yth lost time point, and the sampling time point adjacent to the next sampling time point of the yth lost time point is used as the next target reference time point of the yth lost time point; here, the sampling time point adjacent to the previous sampling time point is the previous time point of a pair of adjacent sampling time points of the yth lost time point, and the sampling time point adjacent to the next sampling time point is the next time point of a pair of adjacent sampling time points of the yth lost time point; Define all reference time points before the yth lost time point as the front reference time point queue of the yth lost time point, and define all reference time points after the yth lost time point as the back reference time point queue of the yth lost time point; In the previous reference time point queue of the yth lost time point, the reciprocal of the duration between the vth reference time point and the yth lost time point is defined as the duration value of the vth reference time point, and the ratio obtained by dividing the duration value of the vth reference time point by the amount obtained by adding the duration values ​​of all reference time points in the previous reference time point queue of the yth lost time point is defined as the duration ratio of the vth reference time point; in the subsequent reference time point queue of the yth lost time point, the reciprocal of the duration between the pth reference time point and the yth lost time point is defined as the duration value of the pth reference time point, and the ratio obtained by dividing the duration value of the pth reference time point by the amount obtained by adding the duration values ​​of all reference time points in the subsequent reference time point queue of the yth lost time point is defined as the duration ratio of the vth reference time point; The amount obtained by adding up the unreasonable amplitudes of all the benchmark time points in the previous benchmark time point queue of the yth lost time point is defined as the statistic one of the yth lost time point; the amount obtained by adding up the unreasonable amplitudes of all the benchmark time points in the subsequent benchmark time point queue of the yth lost time point is defined as the statistic two of the yth lost time point; the amount obtained by adding the statistic one and the statistic two is defined as the final statistic; the ratio obtained by dividing the statistic one by the final statistic is used as the unreasonable critical degree of the previous benchmark of the yth lost time point; the ratio obtained by dividing the statistic two by the final statistic is used as the unreasonable critical degree of the subsequent benchmark of the yth lost time point; According to the ratio of the unreasonable amplitudes of the reference time points before and after each missed time point, the voltage value of the urban power grid at the previous target reference time point and the voltage value of the urban power grid at the subsequent target reference time point, the complementary value of the voltage value of the starting urban power grid at each missed time point is obtained.

7. The method for analyzing and verifying power grid information based on polymorphism according to claim 6, characterized in that: The calculation equation for obtaining the complement value of the voltage value of the starting city power grid at the yth missing time point is: In the equation, AD y The complement value representing the voltage value of the starting city power grid at the yth missing time point; AD1 y The complement value representing the voltage value of the previous starting city power grid at the yth missing time point; AD2 y The complement value of the voltage value of the post-starting city power grid representing the yth missed time point; W1 y The voltage value of the urban power grid representing the previous reference time point of the yth lost time point; W2 y The voltage value of the urban power grid at the target reference time point after the yth lost time point; V y represents the total number of all reference time points in the previous reference time point queue of the yth lost time point; P y g represents the total number of all reference time points in the post-reference time point queue of the yth lost time point; y,v represents the adjacent voltage decrease of the vth reference time point in the previous reference time point queue of the yth lost time point; e y,v g represents the ratio of the duration of the vth reference time point in the previous reference time point queue of the yth lost time point; y,p The voltage decrease of the adjacent reference time point p in the post-reference time point queue representing the yth missed time point; e y,p The ratio of the duration of the pth reference time point in the post-reference time point queue representing the yth lost time point; RD1 y Characterizes the unreasonable criticality of the previous benchmark at the yth loss point; RD2 y Characterizes the unreasonable criticality of the post-benchmark at the yth missing time point; Step 3 specifically includes: similarly, according to the method for obtaining the supplementary value of the voltage value of the starting city grid at each missed time point, obtaining the supplementary value of the current value of each sampling time point and the starting city grid at the missed time point; for any missed time point, subtracting the actual current value of the city grid at the missed time point from the supplementary value of the current value of the starting city grid as the current value difference of the city grid at the missed time point; for any sampling time point, subtracting the actual current value of the city grid at the sampling time point from the supplementary value of the current value of the starting city grid as the current value difference of the city grid at the sampling time point; Then, for the yth lost time point, in the urban power grid information queue, the sampling time point at which the current value difference of the urban power grid is the same as the current value difference of the urban power grid at the yth lost time point is defined as the target reference time point two of the yth lost time point; the average of the adjacent voltage decreases of all the target reference time points of the yth lost time point is defined as the correction value of the voltage value of the urban power grid at the yth lost time point, and the value obtained by adding the correction value of the voltage value of the urban power grid at the yth lost time point and the complement value of the voltage value of the starting urban power grid at the yth lost time point is used as the complement value of the voltage value of the final urban power grid at the yth lost time point.

8. The method for analyzing and verifying power grid information based on polymorphism according to claim 7, characterized in that: Step 4 specifically includes: after obtaining a complete urban power grid information queue, using the Savitzky-Golay method to clear the clutter value of the complete urban power grid information queue, and the urban power grid information in the urban power grid information queue after clearing the clutter value is the cleaned and processed urban power grid information.

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