Substation operation and maintenance inspection system and method based on the Internet of Things cloud platform

Abstract

The present invention discloses a substation operation and maintenance inspection system and method based on an Internet of Things cloud platform, which belongs to the field of substation technology. The present invention includes a data acquisition module, a data transmission module and an Internet of Things cloud platform. The present invention solves the problem that the existing substation process cannot be inspected in real time, resulting in the inability to timely discover abnormal behaviors of the substation process, and the inability to timely operate and maintain the abnormal behaviors of the substation process, resulting in poor substation operation and maintenance inspection effects. The present invention analyzes and identifies substation inspection feature data based on the Internet of Things through the Internet of Things cloud platform, determines the substation inspection analysis and identification results, and formulates a substation inspection operation and maintenance control plan. Based on the substation inspection operation and maintenance control plan, the substation inspection is intelligently operated and maintained, and the substation inspection can be inspected in real time, the abnormal behaviors of the substation process can be discovered in time, and the abnormal behaviors of the substation process can be operated and maintained in time, which can improve the substation operation and maintenance inspection effect.

Description

Technical Field

[0001] The present invention relates to the field of power transformation technology, and in particular to a power transformation operation and maintenance inspection system and method based on an Internet of Things cloud platform. Background Art

[0002] Transformation is the process of transferring electric energy through a transformer. A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are primary coil, secondary coil and iron core (magnetic core); its main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. According to their uses, they can be divided into power transformers and special transformers (furnace transformers, rectifier transformers, power frequency test transformers, voltage regulators, mining transformers, audio transformers, medium frequency transformers, high frequency transformers, impact transformers, instrument transformers, electronic transformers, reactors, mutual inductors, etc.).

[0003] The Chinese patent with publication number CN106548284B discloses an adaptive modular power grid safety early warning evaluation method for operation control, including: constructing an AC / DC hybrid power grid stability evaluation index system and forming a safety early warning evaluation module, based on the Delphi expert meeting mechanism, using expert experience to determine the initial module index composition; and obtaining the index evaluation result sequence in the stability evaluation index system and the evaluation result sequence of the safety early warning evaluation module; obtaining the correlation between the module evaluation result sequence and the whole index calculation result sequence based on the grey correlation analysis method; if the index with a correlation exceeding the threshold is different from the original index composition of the safety early warning evaluation module, then selecting these high-correlation indicators to update the safety early warning evaluation module; otherwise, based on the minimum distance model, the subjective weight and objective weight of the index in the safety early warning evaluation module are integrated to obtain the comprehensive weight, and finally the comprehensive evaluation result of the safety early warning evaluation module is obtained, and the power grid safety early warning is given; however, the patent has the following defects:

[0004] The existing system cannot conduct real-time inspections on the substation process, resulting in the inability to promptly discover abnormal behaviors in the substation process, and the inability to promptly perform operation and maintenance control on abnormal behaviors in the substation process, resulting in poor substation operation and maintenance inspection results. Summary of the invention

[0005] The purpose of the present invention is to provide a substation operation and maintenance inspection system and method based on the Internet of Things cloud platform, which can perform real-time inspections on the substation process, promptly discover abnormal behaviors in the substation process, and promptly perform operation and maintenance control on abnormal behaviors in the substation process, thereby improving the substation operation and maintenance inspection effect and solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The substation operation and maintenance inspection system based on the IoT cloud platform includes:

[0008] The data acquisition module is used to collect substation inspection status data, substation inspection environment data and substation inspection positioning data in real time, and determine the substation inspection real-time data based on the Internet of Things;

[0009] Data transmission module, used to stably transmit the collected real-time data of substation inspection based on IoT to the IoT cloud platform;

[0010] The IoT cloud platform is used to process, analyze, identify, and operate and manage real-time data from IoT-based substation inspections.

[0011] Preferably, the data acquisition module includes:

[0012] The status acquisition unit is used to collect the appearance, current, voltage, power, heating and discharge of the equipment in the substation process in real time to determine the substation inspection status data;

[0013] The environmental collection unit is used to collect the environmental temperature, humidity, light, wind speed and smoke conditions in real time during the substation process to determine the substation inspection environment data;

[0014] Positioning acquisition unit, used to collect the equipment position in the substation process in real time and determine the substation inspection positioning data;

[0015] Among them, based on the real-time collected substation inspection status data, substation inspection environment data and substation inspection positioning data, the substation inspection real-time data based on the Internet of Things is determined.

[0016] Preferably, the data transmission module includes:

[0017] Data transmission unit, used to transmit real-time data of substation inspection based on the Internet of Things;

[0018] A data receiving unit, used for receiving real-time data of substation inspection based on the Internet of Things;

[0019] According to the substation operation and maintenance inspection requirements based on the IoT cloud platform, a data transmission link is established between the data transmitting unit and the data receiving unit;

[0020] Wherein, the data transmitting unit sends a data transmission request to the data receiving unit;

[0021] The data receiving unit receives a data transmission request sent by the data transmitting unit;

[0022] The data receiving unit checks its own data transmission channel and determines the data transmission feedback;

[0023] The data receiving unit sends data transmission feedback to the data transmitting unit;

[0024] The data transmitting unit receives data transmission feedback sent by the data receiving unit;

[0025] Based on data transmission feedback, the data transmitting unit transmits the real-time data of substation inspection based on the Internet of Things to the idle data transmission channel of the data receiving unit;

[0026] The data receiving unit receives the real-time data of substation inspection based on the Internet of Things transmitted by the data transmitting unit.

[0027] Preferably, the Internet of Things cloud platform includes:

[0028] The data processing module is used to retrieve, sort and extract features of the real-time data of substation inspection based on the Internet of Things, and determine the characteristic data of substation inspection based on the Internet of Things;

[0029] The analysis and identification module is used to analyze and identify the substation inspection feature data based on the Internet of Things, and determine the substation inspection analysis and identification results;

[0030] The operation and maintenance control module is used to formulate substation inspection operation and maintenance control plans, and to perform intelligent operation and maintenance control of substation inspections based on the substation inspection operation and maintenance control plans.

[0031] Preferably, the data processing module includes:

[0032] A data retrieval unit is used to retrieve real-time data of substation inspection based on the Internet of Things;

[0033] Obtain real-time data of substation inspection based on the Internet of Things;

[0034] Based on the sequential retrieval method, the real-time data of substation inspection based on the Internet of Things is retrieved;

[0035] Check the consistency of real-time data of substation inspection based on IoT;

[0036] According to the reasonable value range and mutual relationship of each variable in the substation inspection real-time data, check whether the substation inspection real-time data meets the requirements;

[0037] Remove inconsistent data that is beyond the normal range, logically unreasonable or contradictory in the real-time data of substation inspection based on the Internet of Things;

[0038] Determine the real-time data of substation inspection with data consistency;

[0039] Obtaining real-time substation inspection data with data consistency;

[0040] Process invalid and missing values ​​of real-time substation inspection data with data consistency;

[0041] Remove invalid data and missing data that are of no value to the substation operation and maintenance inspection based on the IoT cloud platform contained in the real-time substation inspection data with data consistency;

[0042] Determine the real-time inspection data of substations that are valuable for substation operation and maintenance inspections based on the IoT cloud platform;

[0043] A data sorting unit, used to sort the retrieved substation inspection real-time data;

[0044] Obtain real-time inspection data of substations that are valuable for substation operation and maintenance inspections based on the IoT cloud platform;

[0045] Based on the internal sorting method, the retrieved real-time substation inspection data that is valuable for substation operation and maintenance inspection based on the IoT cloud platform is sorted;

[0046] Determine the real-time data of substation inspection with arrangement order;

[0047] A feature extraction unit is used to extract features from the sorted substation inspection real-time data;

[0048] Obtaining real-time substation inspection data with sorting order;

[0049] Extract features from real-time substation inspection data with arrangement order;

[0050] Determine the characteristic data of substation inspection based on the Internet of Things.

[0051] Preferably, the analysis and identification module includes:

[0052] Standard storage unit, used to store pre-set substation inspection standard data;

[0053] According to the substation operation and maintenance inspection requirements based on the IoT cloud platform, the substation inspection standard data is pre-set and stored;

[0054] Index retrieval unit, used to index and retrieve pre-set substation inspection standard data;

[0055] According to the substation operation and maintenance inspection requirements based on the IoT cloud platform, the pre-set substation inspection standard data is indexed and the indexed substation inspection standard data is retrieved;

[0056] An analysis and identification unit, used to analyze and identify the characteristic data of substation inspection based on the Internet of Things;

[0057] Obtain substation inspection feature data based on the Internet of Things;

[0058] Obtain the retrieved substation inspection standard data;

[0059] Based on the substation inspection standard data, analyze and identify the substation inspection feature data;

[0060] Determine the substation inspection analysis and identification results.

[0061] Preferably, based on the substation inspection standard data, the substation inspection characteristic data is analyzed and identified, including:

[0062] When the substation inspection characteristic data is within the substation inspection standard data range, the substation inspection analysis and identification result is that there is no abnormal behavior in the substation inspection;

[0063] When the substation inspection characteristic data is not within the substation inspection standard data range, the substation inspection analysis and identification result is that the substation inspection has abnormal behavior.

[0064] Preferably, the operation and maintenance control module includes:

[0065] Strategy formulation unit, used to formulate substation inspection and maintenance control plans;

[0066] Obtain substation inspection analysis and identification results;

[0067] Conduct in-depth mining and correlation analysis on substation inspection analysis and identification results;

[0068] Determine the cause of abnormal behavior during substation inspection;

[0069] Based on the causes of abnormal substation inspection behavior, formulate a substation inspection operation and maintenance control plan;

[0070] Operation and maintenance control unit, used for intelligent operation and maintenance control of substation inspection;

[0071] Obtain substation inspection, operation and maintenance control plan;

[0072] Intelligent operation and maintenance control of substation inspection is carried out based on the substation inspection operation and maintenance control solution.

[0073] Preferably, intelligent operation and maintenance control of substation inspection is performed based on the substation inspection operation and maintenance control solution, including:

[0074] Provide timely warning for abnormal behaviors during substation inspection;

[0075] Automatically send the location information of substation equipment with abnormal behavior to substation operation and maintenance control personnel, and intelligently guide substation operation and maintenance control personnel to repair the substation equipment with abnormal behavior in a timely manner.

[0076] Preferably, the method further comprises: a determination module, configured to:

[0077] Before the data transmitting unit transmits the real-time data of the substation inspection based on the Internet of Things to the idle data transmission channel of the data receiving unit, all idle data transmission channels are determined as a channel set;

[0078] Select any data transmission channel in the channel set as the target transmission channel;

[0079] Acquire attribute information of the target transmission channel; the attribute information includes non-stationary broadband spectrum characteristics, output code elements of each transmission node and transmission distance;

[0080] Calculate the behavior pattern of each transmission node in the target transmission channel according to the attribute information;

[0081]

[0082] Among them, Q b is the behavior pattern of the bth transmission node included in the target transmission channel; z is the number of transmission nodes included in the target transmission channel; λ is the non-stationary broadband spectrum characteristic of the target transmission channel; x b is the output code element of the bth transmission node in the target transmission channel; r is the transmission distance of the target transmission channel; D1 and D2 are the distances between the bth transmission node and two adjacent transmission nodes in the target transmission channel;

[0083] According to the behavior pattern of each transmission node, the probability value P of successfully sending substation inspection real-time data based on the target transmission channel is calculated;

[0084]

[0085] Among them, Q b ' is the preset behavior mode of the bth transmission node included in the target transmission channel; T i is the transmission time of the ith transmission node for substation inspection real-time data; T0 is the preset transmission time of each transmission node for transmitting substation inspection real-time data; w i is the amount of information transmitted by the i-th transmission node within the corresponding transmission duration; is the average transmission rate of data transmitted by z transmission nodes; e is a natural constant;

[0086] When it is determined that the probability value is less than the preset threshold, it means that the current target transmission channel is unqualified, and it is necessary to reselect a data transmission channel from the channel set for calculation until the target transmission channel with a probability value greater than or equal to the threshold is determined as the effective transmission channel. The data transmission unit transmits the real-time substation inspection data based on the Internet of Things to the effective transmission channel.

[0087] According to another aspect of the present invention, a substation operation and maintenance inspection method based on an Internet of Things cloud platform is provided, which is implemented based on the substation operation and maintenance inspection system based on an Internet of Things cloud platform as described above, and includes the following steps:

[0088] S1: The data acquisition module collects substation inspection status data, substation inspection environment data and substation inspection positioning data in real time, and determines the substation inspection real-time data based on the Internet of Things;

[0089] S2: The collected real-time data of substation inspection based on IoT is stably transmitted to the IoT cloud platform through the data transmission module;

[0090] S3: Process the real-time data of the substation inspection based on the Internet of Things through the Internet of Things cloud platform to determine the characteristic data of the substation inspection based on the Internet of Things;

[0091] S4: Analyze and identify the substation inspection feature data based on the Internet of Things through the Internet of Things cloud platform to determine the substation inspection analysis and identification results;

[0092] S5: Develop a substation inspection and operation and maintenance management plan through the IoT cloud platform, and perform intelligent operation and maintenance management of substation inspections based on the substation inspection and operation and maintenance management plan.

[0093] Compared with the prior art, the present invention has the following beneficial effects:

[0094] The present invention determines the real-time data of substation inspection based on the Internet of Things by collecting substation inspection status data, substation inspection environment data and substation inspection positioning data in real time, and stably transmits the collected real-time data of substation inspection based on the Internet of Things to the Internet of Things cloud platform, processes the real-time data of substation inspection based on the Internet of Things through the Internet of Things cloud platform, determines the substation inspection feature data based on the Internet of Things, analyzes and identifies the substation inspection feature data based on the Internet of Things through the Internet of Things cloud platform, determines the substation inspection analysis and identification result, formulates a substation inspection operation and maintenance control plan through the Internet of Things cloud platform, performs intelligent operation and maintenance control on substation inspection based on the substation inspection operation and maintenance control plan, can perform real-time inspection on the substation process, can timely discover abnormal behavior of the substation process, and can timely perform operation and maintenance control on the abnormal behavior of the substation process, which can improve the substation operation and maintenance inspection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0095] Figure 1 This is a module structure diagram of the substation operation and maintenance inspection system based on the Internet of Things cloud platform of the present invention;

[0096] Figure 2 The present invention is a flow chart of a substation operation and maintenance inspection method based on an Internet of Things cloud platform. DETAILED DESCRIPTION

[0097] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0098] In order to solve the existing problem that the substation process cannot be inspected in real time, resulting in the inability to timely discover abnormal behaviors of the substation process, and the inability to timely operate and maintain abnormal behaviors of the substation process, resulting in poor substation operation and maintenance inspection effects, please refer to Figure 1-Figure 2 , this embodiment provides the following technical solutions:

[0099] The substation operation and maintenance inspection system based on the Internet of Things cloud platform includes: a data acquisition module, a data transmission module and an Internet of Things cloud platform.

[0100] It should be noted that through the mutual interactive communication between the data acquisition module, the data transmission module and the Internet of Things cloud platform, the substation process can be inspected in real time, the abnormal behavior of the substation process can be discovered in time, and the abnormal behavior of the substation process can be timely operated and maintained and controlled, which can improve the substation operation and maintenance inspection effect.

[0101] Among them, the data acquisition module is used to collect substation inspection status data, substation inspection environment data and substation inspection positioning data in real time, and determine the substation inspection real-time data based on the Internet of Things;

[0102] In this embodiment, as a preferred technical solution of the present invention, the data acquisition module includes:

[0103] The status acquisition unit is used to collect the appearance, current, voltage, power, heating and discharge of the equipment in the substation process in real time to determine the substation inspection status data;

[0104] The environmental collection unit is used to collect the environmental temperature, humidity, light, wind speed and smoke conditions in real time during the substation process to determine the substation inspection environment data;

[0105] Positioning acquisition unit, used to collect the equipment position in the substation process in real time and determine the substation inspection positioning data;

[0106] Among them, based on the real-time collected substation inspection status data, substation inspection environment data and substation inspection positioning data, the substation inspection real-time data based on the Internet of Things is determined.

[0107] Among them, the data transmission module is used to stably transmit the collected real-time data of substation inspection based on the Internet of Things to the Internet of Things cloud platform;

[0108] In this embodiment, as a preferred technical solution of the present invention, the data transmission module includes:

[0109] Data transmission unit, used to transmit real-time data of substation inspection based on the Internet of Things;

[0110] A data receiving unit, used for receiving real-time data of substation inspection based on the Internet of Things;

[0111] According to the substation operation and maintenance inspection requirements based on the IoT cloud platform, a data transmission link is established between the data transmitting unit and the data receiving unit;

[0112] Wherein, the data transmitting unit sends a data transmission request to the data receiving unit;

[0113] The data receiving unit receives a data transmission request sent by the data transmitting unit;

[0114] The data receiving unit checks its own data transmission channel and determines the data transmission feedback;

[0115] The data receiving unit sends data transmission feedback to the data transmitting unit;

[0116] The data transmitting unit receives data transmission feedback sent by the data receiving unit;

[0117] Based on data transmission feedback, the data transmitting unit transmits the real-time data of substation inspection based on the Internet of Things to the idle data transmission channel of the data receiving unit;

[0118] The data receiving unit receives the real-time data of substation inspection based on the Internet of Things transmitted by the data transmitting unit.

[0119] Among them, the IoT cloud platform is used to process, analyze, identify, and operate and manage real-time data of IoT-based substation inspections.

[0120] In this embodiment, as a preferred technical solution of the present invention, the Internet of Things cloud platform includes: a data processing module, an analysis and identification module, and an operation and maintenance control module;

[0121] It should be noted that through the mutual interactive communication between the data processing module, the analysis and identification module and the operation and maintenance control module, the real-time data of the substation inspection based on the Internet of Things can be processed, analyzed, identified and operated and maintained, and the abnormal behavior of the substation process can be discovered in time, and the abnormal behavior of the substation process can be operated and maintained in time, which can improve the operation and maintenance inspection effect of the substation.

[0122] Among them, the data processing module is used to retrieve, sort and extract features of the real-time data of substation inspection based on the Internet of Things, and determine the characteristic data of substation inspection based on the Internet of Things;

[0123] In this embodiment, as a preferred technical solution of the present invention, the data processing module includes:

[0124] A data retrieval unit is used to retrieve real-time data of substation inspection based on the Internet of Things;

[0125] Obtain real-time data of substation inspection based on the Internet of Things;

[0126] Based on the sequential retrieval method, the real-time data of substation inspection based on the Internet of Things is retrieved;

[0127] Check the consistency of real-time data of substation inspection based on IoT;

[0128] According to the reasonable value range and mutual relationship of each variable in the substation inspection real-time data, check whether the substation inspection real-time data meets the requirements;

[0129] Remove inconsistent data that is beyond the normal range, logically unreasonable or contradictory in the real-time data of substation inspection based on the Internet of Things;

[0130] Determine the real-time data of substation inspection with data consistency;

[0131] Obtaining real-time substation inspection data with data consistency;

[0132] Process invalid and missing values ​​of real-time substation inspection data with data consistency;

[0133] Remove invalid data and missing data that are of no value to the substation operation and maintenance inspection based on the IoT cloud platform contained in the real-time substation inspection data with data consistency;

[0134] Determine the real-time inspection data of substations that are valuable for substation operation and maintenance inspections based on the IoT cloud platform;

[0135] A data sorting unit, used to sort the retrieved substation inspection real-time data;

[0136] Obtain real-time inspection data of substations that are valuable for substation operation and maintenance inspections based on the IoT cloud platform;

[0137] Based on the internal sorting method, the retrieved real-time substation inspection data that is valuable for substation operation and maintenance inspection based on the IoT cloud platform is sorted;

[0138] Determine the real-time data of substation inspection with arrangement order;

[0139] A feature extraction unit is used to extract features from the sorted substation inspection real-time data;

[0140] Obtaining real-time substation inspection data with sorting order;

[0141] Extract features from real-time substation inspection data with arrangement order;

[0142] Determine the characteristic data of substation inspection based on the Internet of Things.

[0143] Among them, the analysis and identification module is used to analyze and identify the substation inspection feature data based on the Internet of Things, and determine the substation inspection analysis and identification results;

[0144] In this embodiment, as a preferred technical solution of the present invention, the analysis and identification module includes:

[0145] Standard storage unit, used to store pre-set substation inspection standard data;

[0146] According to the substation operation and maintenance inspection requirements based on the IoT cloud platform, the substation inspection standard data is pre-set and stored;

[0147] Index retrieval unit, used to index and retrieve pre-set substation inspection standard data;

[0148] According to the substation operation and maintenance inspection requirements based on the IoT cloud platform, the pre-set substation inspection standard data is indexed and the indexed substation inspection standard data is retrieved;

[0149] An analysis and identification unit, used to analyze and identify the characteristic data of substation inspection based on the Internet of Things;

[0150] Obtain substation inspection feature data based on the Internet of Things;

[0151] Obtain the retrieved substation inspection standard data;

[0152] Based on the substation inspection standard data, analyze and identify the substation inspection feature data;

[0153] Determine the substation inspection analysis and identification results.

[0154] In this embodiment, as a preferred technical solution of the present invention, based on the substation inspection standard data, the substation inspection characteristic data is analyzed and identified, including:

[0155] When the substation inspection characteristic data is within the substation inspection standard data range, the substation inspection analysis and identification result is that there is no abnormal behavior in the substation inspection;

[0156] When the substation inspection characteristic data is not within the substation inspection standard data range, the substation inspection analysis and identification result is that the substation inspection has abnormal behavior.

[0157] It should be noted that, based on the substation inspection standard data, the substation inspection characteristic data is analyzed and identified, wherein the substation inspection analysis and identification results are shown in Table 1:

[0158] Table 1: Substation inspection analysis and identification results

[0159]

[0160] Therefore, based on the substation inspection standard data, the substation inspection feature data is analyzed and identified, the substation inspection analysis and identification results are determined, and a substation inspection operation and maintenance control plan is formulated. Based on the substation inspection operation and maintenance control plan, the substation inspection is intelligently operated and maintained, which can timely discover abnormal behaviors in the substation process and carry out timely operation and maintenance control of abnormal behaviors in the substation process.

[0161] Among them, the operation and maintenance control module is used to formulate substation inspection operation and maintenance control plans, and to perform intelligent operation and maintenance control of substation inspections based on the substation inspection operation and maintenance control plans.

[0162] In this embodiment, as a preferred technical solution of the present invention, the operation and maintenance control module includes:

[0163] Strategy formulation unit, used to formulate substation inspection and maintenance control plans;

[0164] Obtain substation inspection analysis and identification results;

[0165] Conduct in-depth mining and correlation analysis on substation inspection analysis and identification results;

[0166] Determine the cause of abnormal behavior during substation inspection;

[0167] Based on the causes of abnormal substation inspection behavior, formulate a substation inspection operation and maintenance control plan;

[0168] Operation and maintenance control unit, used for intelligent operation and maintenance control of substation inspection;

[0169] Obtain substation inspection, operation and maintenance control plan;

[0170] Intelligent operation and maintenance control of substation inspection is carried out based on the substation inspection operation and maintenance control solution.

[0171] In this embodiment, as the preferred technical solution of the present invention, intelligent operation and maintenance control is performed on substation inspection based on the substation inspection operation and maintenance control solution, including:

[0172] Provide timely warning for abnormal behaviors during substation inspection;

[0173] Automatically send the location information of substation equipment with abnormal behavior to substation operation and maintenance control personnel, and intelligently guide substation operation and maintenance control personnel to repair the substation equipment with abnormal behavior in a timely manner.

[0174] Preferably, the method further comprises: a determination module, configured to:

[0175] Before the data transmitting unit transmits the real-time data of the substation inspection based on the Internet of Things to the idle data transmission channel of the data receiving unit, all idle data transmission channels are determined as a channel set;

[0176] Select any data transmission channel in the channel set as the target transmission channel;

[0177] Acquire attribute information of the target transmission channel; the attribute information includes non-stationary broadband spectrum characteristics, output code elements of each transmission node and transmission distance;

[0178] Calculate the behavior pattern of each transmission node in the target transmission channel according to the attribute information;

[0179]

[0180] Among them, Q b is the behavior pattern of the bth transmission node included in the target transmission channel; z is the number of transmission nodes included in the target transmission channel; λ is the non-stationary broadband spectrum characteristic of the target transmission channel; x b is the output code element of the bth transmission node in the target transmission channel; r is the transmission distance of the target transmission channel; D1 and D2 are the distances between the bth transmission node and two adjacent transmission nodes in the target transmission channel;

[0181] According to the behavior pattern of each transmission node, the probability value P of successfully sending substation inspection real-time data based on the target transmission channel is calculated;

[0182]

[0183] Among them, Q b ' is the preset behavior mode of the bth transmission node included in the target transmission channel; T i is the transmission time of the ith transmission node for substation inspection real-time data; T0 is the preset transmission time of each transmission node for transmitting substation inspection real-time data; w i is the amount of information transmitted by the i-th transmission node within the corresponding transmission duration; is the average transmission rate of data transmitted by z transmission nodes; e is a natural constant;

[0184] When it is determined that the probability value is less than the preset threshold, it means that the current target transmission channel is unqualified, and it is necessary to reselect a data transmission channel from the channel set for calculation until the target transmission channel with a probability value greater than or equal to the threshold is determined as the effective transmission channel. The data transmission unit transmits the real-time substation inspection data based on the Internet of Things to the effective transmission channel.

[0185] The working principle of the above technical solution is: before the data transmitting unit transmits the real-time data of the substation inspection based on the Internet of Things in the idle data transmission channel of the data receiving unit, all idle data transmission channels are determined as a channel set; it is necessary to select a transmission channel that can accurately and reliably transmit the real-time data of the substation inspection in the channel set. Therefore, any data transmission channel in the channel set is selected as the target transmission channel; the attribute information of the target transmission channel is obtained; the attribute information includes non-stationary broadband spectrum characteristics, the output code element of each transmission node and the transmission distance; the non-stationary broadband spectrum characteristics indicate that the spectrum characteristics of the signal change over time within the broadband frequency range. The following methods can be used: Spectrum analyzer: Use a spectrum analyzer to analyze the signal in the transmission channel in real time or after recording. This can help identify the frequency components of the signal and how they change over time. Time-frequency analysis: Apply time-frequency analysis methods (such as short-time Fourier transform, wavelet transform, etc.) to capture the non-stationary characteristics of the signal. These methods can reveal the joint distribution of the signal in time and frequency. Bandwidth estimation: Estimate the bandwidth of the signal by analyzing the data of the spectrum analyzer or using a specific algorithm. Transmission node output symbol analysis: The output symbol is the basic signal unit sent by the transmission node in digital communication. In order to obtain the output symbol information of each transmission node, the following steps can be taken: Signal decoding: At the receiving end or test point, the received signal is decoded to restore the original symbol sequence. This may require the use of the same encoding / decoding algorithm as the transmitting end. Symbol synchronization: Ensure that the received symbol is synchronized with the symbol at the transmitting end for accurate analysis. Symbol analysis: Statistics and analysis of the decoded symbol to obtain information such as symbol type, frequency, error rate, etc. Transmission distance measurement: Signal attenuation analysis: Indirectly estimate the transmission distance by analyzing the attenuation of the signal during transmission. Signal attenuation is usually proportional to the transmission distance.

[0186] Calculating the behavior pattern of each transmission node in the target transmission channel based on the attribute information is equivalent to displaying the characteristic information of each transmission node in the time-frequency domain, which can more comprehensively reflect the dynamic behavior of network flows or nodes because they can simultaneously capture the changes in the signal in time and frequency. Time-frequency transformation methods include short-time Fourier transform, wavelet packet decomposition, and Cho i-Williams distribution. These methods can transform the time domain characteristic signal into the time-frequency domain and present it in the form of a time-frequency matrix. When extracting characteristic parameters from the time-frequency matrix, methods based on statistics and Renyi entropy can be used to express the original data in a concise manner while minimizing the loss of information. It plays a key role in analyzing and understanding network behavior patterns.

[0187] According to the behavior pattern of each transmission node, the probability value of successfully sending substation inspection real-time data based on the target transmission channel is calculated, which is related to parameters such as the transmission time of each transmission node for substation inspection real-time data, the preset transmission time, and the average transmission rate.

[0188] The beneficial effects of the above technical solution are as follows: any data transmission channel in the channel set is selected as the target transmission channel; the attribute information of the target transmission channel is obtained; the behavior pattern of each transmission node in the target transmission channel is calculated according to the attribute information, and the probability value of the target transmission channel being able to successfully send the substation inspection real-time data is calculated according to the behavior pattern of each transmission node. When it is determined that the probability value is less than a preset threshold, it indicates that the current target transmission channel is unqualified, and it is necessary to reselect a data transmission channel from the channel set for calculation until a target transmission channel with a probability value greater than or equal to the threshold is determined as the effective transmission channel, which facilitates the determination of an accurate transmission channel. The data transmission unit transmits the substation inspection real-time data based on the Internet of Things to the effective transmission channel, thereby improving the accuracy of data transmission.

[0189] In order to better demonstrate the substation operation and maintenance inspection process based on the Internet of Things cloud platform, this embodiment now provides a substation operation and maintenance inspection method based on the Internet of Things cloud platform, which is implemented based on the substation operation and maintenance inspection system based on the Internet of Things cloud platform as described above, and includes the following steps:

[0190] S1: The data acquisition module collects substation inspection status data, substation inspection environment data and substation inspection positioning data in real time, and determines the substation inspection real-time data based on the Internet of Things;

[0191] S2: The collected real-time data of substation inspection based on IoT is stably transmitted to the IoT cloud platform through the data transmission module;

[0192] S3: Process the real-time data of the substation inspection based on the Internet of Things through the Internet of Things cloud platform to determine the characteristic data of the substation inspection based on the Internet of Things;

[0193] S4: Analyze and identify the substation inspection feature data based on the Internet of Things through the Internet of Things cloud platform to determine the substation inspection analysis and identification results;

[0194] S5: Develop a substation inspection and operation and maintenance management plan through the IoT cloud platform, and perform intelligent operation and maintenance management of substation inspections based on the substation inspection and operation and maintenance management plan.

[0195] Therefore, by collecting substation inspection status data, substation inspection environment data and substation inspection positioning data in real time, the real-time data of substation inspection based on the Internet of Things is determined, and the collected real-time data of substation inspection based on the Internet of Things is stably transmitted to the Internet of Things cloud platform, and the real-time data of substation inspection based on the Internet of Things is processed by the Internet of Things cloud platform to determine the substation inspection feature data based on the Internet of Things, and the substation inspection feature data based on the Internet of Things is analyzed and identified by the Internet of Things cloud platform to determine the substation inspection analysis and identification results, and a substation inspection operation and maintenance control plan is formulated through the Internet of Things cloud platform, and intelligent operation and maintenance control of substation inspection is carried out based on the substation inspection operation and maintenance control plan. The substation process can be inspected in real time, abnormal behavior of the substation process can be discovered in time, and abnormal behavior of the substation process can be controlled in time, which can improve the substation operation and maintenance inspection effect.

[0196] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0197] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The substation operation and maintenance inspection system based on the Internet of Things cloud platform is characterized by: include: The data acquisition module is used to collect substation inspection status data, substation inspection environment data and substation inspection positioning data in real time, and determine the substation inspection real-time data based on the Internet of Things; Data transmission module, used to stably transmit the collected real-time data of substation inspection based on IoT to the IoT cloud platform; The IoT cloud platform is used to process, analyze, identify, and operate and maintain real-time data from IoT-based substation inspections; The data transmission module comprises: Data transmission unit, used to transmit real-time data of substation inspection based on the Internet of Things; A data receiving unit, used for receiving real-time data of substation inspection based on the Internet of Things; According to the substation operation and maintenance inspection requirements based on the IoT cloud platform, a data transmission link is established between the data transmitting unit and the data receiving unit; Wherein, the data transmitting unit sends a data transmission request to the data receiving unit; The data receiving unit receives a data transmission request sent by the data transmitting unit; The data receiving unit checks its own data transmission channel and determines the data transmission feedback; The data receiving unit sends data transmission feedback to the data transmitting unit; The data transmitting unit receives data transmission feedback sent by the data receiving unit; Based on the data transmission feedback, the data transmitting unit transmits the real-time data of the substation inspection based on the Internet of Things to the idle data transmission channel of the data receiving unit; The data receiving unit receives the real-time data of substation inspection based on the Internet of Things transmitted by the data transmitting unit; Also included is a determination module, configured to: Before the data transmitting unit transmits the real-time data of the substation inspection based on the Internet of Things to the idle data transmission channel of the data receiving unit, all idle data transmission channels are determined as a channel set; Select any data transmission channel in the channel set as the target transmission channel; Acquire attribute information of the target transmission channel; the attribute information includes non-stationary broadband spectrum characteristics, output code elements of each transmission node and transmission distance; Calculate the behavior pattern of each transmission node in the target transmission channel according to the attribute information; ； in, The target transmission channel includes The behavior pattern of each transmission node; is the number of transmission nodes included in the target transmission channel; is the non-stationary broadband spectrum characteristics of the target transmission channel; The target transmission channel Output codewords of transmission nodes; is the transmission distance of the target transmission channel; , The target transmission channel The distance between a transmission node and two adjacent transmission nodes; According to the behavior pattern of each transmission node, the probability value P of successfully sending substation inspection real-time data based on the target transmission channel is calculated; ； in, The target transmission channel includes The preset behavior mode of each transmission node; For the The transmission time of the real-time data of substation inspection by each transmission node; The preset transmission time for transmitting the real-time data of substation inspection for each transmission node set; For the The amount of information transmitted by each transmission node within the corresponding transmission time; is the average transmission rate of data transmitted by z transmission nodes; is a natural constant; When it is determined that the probability value is less than the preset threshold, it means that the current target transmission channel is unqualified, and it is necessary to reselect a data transmission channel from the channel set for calculation until the target transmission channel with a probability value greater than or equal to the threshold is determined as the effective transmission channel. The data transmission unit transmits the real-time substation inspection data based on the Internet of Things to the effective transmission channel.

2. The substation operation and maintenance inspection system based on the Internet of Things cloud platform according to claim 1 is characterized in that: The data acquisition module comprises: The status acquisition unit is used to collect the appearance, current, voltage, power, heating and discharge of the equipment in the substation process in real time to determine the substation inspection status data; The environmental collection unit is used to collect the environmental temperature, humidity, light, wind speed and smoke conditions in real time during the substation process to determine the substation inspection environment data; Positioning acquisition unit, used to collect the equipment position in the substation process in real time and determine the substation inspection positioning data; Among them, based on the real-time collected substation inspection status data, substation inspection environment data and substation inspection positioning data, the substation inspection real-time data based on the Internet of Things is determined.

3. The substation operation and maintenance inspection system based on the Internet of Things cloud platform according to claim 2 is characterized in that: The IoT cloud platform includes: The data processing module is used to retrieve, sort and extract features of the real-time data of substation inspection based on the Internet of Things, and determine the characteristic data of substation inspection based on the Internet of Things; The analysis and identification module is used to analyze and identify the substation inspection feature data based on the Internet of Things, and determine the substation inspection analysis and identification results; The operation and maintenance control module is used to formulate substation inspection operation and maintenance control plans, and to perform intelligent operation and maintenance control of substation inspections based on the substation inspection operation and maintenance control plans.

4. The substation operation and maintenance inspection system based on the Internet of Things cloud platform according to claim 3 is characterized in that: The data processing module comprises: A data retrieval unit is used to retrieve real-time data of substation inspection based on the Internet of Things; Obtain real-time data of substation inspection based on the Internet of Things; Based on the sequential retrieval method, the real-time data of substation inspection based on the Internet of Things is retrieved; Check the consistency of real-time data of substation inspection based on IoT; According to the reasonable value range and mutual relationship of each variable in the substation inspection real-time data, check whether the substation inspection real-time data meets the requirements; Remove inconsistent data that is beyond the normal range, logically unreasonable or contradictory in the real-time data of substation inspection based on the Internet of Things; Determine the real-time data of substation inspection with data consistency; Obtaining real-time substation inspection data with data consistency; Process invalid and missing values ​​of real-time substation inspection data with data consistency; Remove invalid data and missing data that are of no value to the substation operation and maintenance inspection based on the IoT cloud platform contained in the real-time substation inspection data with data consistency; Determine the real-time inspection data of substations that are valuable for substation operation and maintenance inspections based on the IoT cloud platform; A data sorting unit, used to sort the retrieved substation inspection real-time data; Obtain real-time inspection data of substations that are valuable for substation operation and maintenance inspections based on the IoT cloud platform; Based on the internal sorting method, the retrieved real-time substation inspection data that is valuable for substation operation and maintenance inspection based on the IoT cloud platform is sorted; Determine the real-time data of substation inspection with arrangement order; A feature extraction unit is used to extract features from the sorted substation inspection real-time data; Obtaining real-time substation inspection data with sorting order; Extract features from real-time substation inspection data with arrangement order; Determine the characteristic data of substation inspection based on the Internet of Things.

5. The substation operation and maintenance inspection system based on the Internet of Things cloud platform according to claim 4 is characterized in that: The analysis and identification module comprises: Standard storage unit, used to store pre-set substation inspection standard data; According to the substation operation and maintenance inspection requirements based on the IoT cloud platform, the substation inspection standard data is pre-set and stored; Index retrieval unit, used to index and retrieve pre-set substation inspection standard data; According to the substation operation and maintenance inspection requirements based on the IoT cloud platform, the pre-set substation inspection standard data is indexed and the indexed substation inspection standard data is retrieved; An analysis and identification unit, used to analyze and identify the characteristic data of substation inspection based on the Internet of Things; Obtain substation inspection feature data based on the Internet of Things; Obtain the retrieved substation inspection standard data; Based on the substation inspection standard data, analyze and identify the substation inspection feature data; Determine the substation inspection analysis and identification results.

6. The substation operation and maintenance inspection system based on the Internet of Things cloud platform according to claim 5 is characterized in that: Based on the substation inspection standard data, the substation inspection feature data is analyzed and identified, including: When the substation inspection characteristic data is within the substation inspection standard data range, the substation inspection analysis and identification result is that there is no abnormal behavior in the substation inspection; When the substation inspection characteristic data is not within the substation inspection standard data range, the substation inspection analysis and identification result is that the substation inspection has abnormal behavior.

7. The substation operation and maintenance inspection system based on the Internet of Things cloud platform according to claim 6 is characterized in that: The operation and maintenance control module includes: Strategy formulation unit, used to formulate substation inspection and maintenance control plans; Obtain substation inspection analysis and identification results; Conduct in-depth mining and relevant analysis on substation inspection analysis and identification results; Determine the cause of abnormal behavior during substation inspection; Based on the causes of abnormal substation inspection behavior, formulate a substation inspection operation and maintenance control plan; Operation and maintenance control unit, used for intelligent operation and maintenance control of substation inspection; Obtain substation inspection, operation and maintenance control plan; Based on the substation inspection and maintenance control solution, intelligent operation and maintenance control of substation inspection is carried out, including: Provide timely warning for abnormal behaviors during substation inspection; Automatically send the location information of substation equipment with abnormal behavior to substation operation and maintenance control personnel, and intelligently guide substation operation and maintenance control personnel to repair the substation equipment with abnormal behavior in a timely manner.

8. A substation operation and maintenance inspection method based on an Internet of Things cloud platform, implemented based on a substation operation and maintenance inspection system based on an Internet of Things cloud platform as claimed in any one of claims 1 to 7, characterized in that: The steps include: S1: The data acquisition module collects substation inspection status data, substation inspection environment data and substation inspection positioning data in real time, and determines the substation inspection real-time data based on the Internet of Things; S2: The collected real-time data of substation inspection based on IoT is stably transmitted to the IoT cloud platform through the data transmission module; S3: Process the real-time data of the substation inspection based on the Internet of Things through the Internet of Things cloud platform to determine the characteristic data of the substation inspection based on the Internet of Things; S4: Analyze and identify the substation inspection feature data based on the Internet of Things through the Internet of Things cloud platform to determine the substation inspection analysis and identification results; S5: Develop a substation inspection and maintenance control plan through the IoT cloud platform, and perform intelligent operation and maintenance control of substation inspections based on the substation inspection and maintenance control plan.

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