49results about How to "Improve the efficiency of operation and maintenance" patented technology

The invention relates to an electric power unified video monitoring platform equipment fault diagnosis early warning method. The method comprises steps of rapid equipment fault diagnosis analysis and positioning, diagnosis fault early warning and fault data analysis. The method is advantaged in that automatic diagnosis analysis positioning of a blank screen and error code faults existing in a platform video equipment operation process can be realized, operation and maintenance personnel is facilitated to rapidly realize troubleshooting, position fault causes and solve problems, and operation and maintenance efficiency is improved. The method is advantaged in that multi-dimension analysis on the equipment fault causes, fault types, fault frequency, typical fault regions and typical fault scenes is carried out to form an equipment operation defect database, data support is provided for later video monitoring equipment model selection and network configuration standardization, operation personnel workload is effectively reduced, operation maintenance efficiency is improved, and the platform reliability index is improved.

The invention discloses a converter station secondary circuit abnormity identification and early warning method based on a deep belief network, and the method comprises the steps: building a historical abnormity data set and a normal data set of a mutual inductor coil through a secondary circuit intelligent analysis system, combining a fault equipment part, a fault reason and an operation and maintenance guide rule, and carrying out the summarization to form a typical fault processing knowledge base; forming a fault part sample set with a label according to the historical abnormal data of thetransformer coil in combination with actual operation and maintenance experience; establishing a DBN model, performing unsupervised layer-by-layer training on the DBN model by utilizing the training set with the fault classification label, and finally forming a diagnosis model; inputting samples to be classified into the diagnosis model trained in the step 3 according to classification rules, andoutputting to obtain specific classifications and error values under different classifications n; and sending the error value early warning information to the background of the secondary circuit intelligent analysis system. The problems that the pressing plate state of the protection device is abnormal, and the multi-protection acquisition device is abnormal and cannot give an early warning are solved.

The invention provides an NFC (Near Field Communication) technology-based intelligent substation optical cable label system which comprises an NFC intelligent label generation device, an NFC electronic label and an NFC intelligent label analysis device, wherein the NFC intelligent label generation device comprises a label file generation module and a first NFC card reader; the label file generation module is used for generating an intelligent label file; the first NFC card reader interacts with the NFC electronic label in an NFC wireless way and writes the intelligent label file generated by the label file generation module into the NFC electronic label; the NFC intelligent label analysis device is used for acquiring intelligent secondary equipment or optical fiber loop information by reading the intelligent label file in the NFC electronic label, matching the acquired intelligent secondary equipment or optical fiber loop information with analyzed SCD (Substation Configuration Description) data and then displaying the intelligent secondary equipment information and input and output of intelligent secondary equipment in a graphical way. According to the NFC technology-based intelligent substation optical cable label system, the personnel engineering construction and operation and maintenance efficiency of an intelligent substation secondary technology can be improved.

The invention discloses a method and system for automatically positioning an electric power facility instrument, and the method comprises the steps: obtaining a plurality of groups of original image data which are located in different collection environment conditions and comprise the electric power facility instrument, and carrying out the data augmentation, so as to obtain a sample image data set; performing content labeling on the images in the sample image data set; constructing a convolutional neural network model, and training the convolutional neural network model by using the sample image data set subjected to content labeling to determine the convolutional neural network model for automatic positioning of the electric power facility instrument; and automatically positioning the electric power facility instrument in an image to be detected by using the convolutional neural network model for automatically positioning the electric power facility instrument to obtain positioning information. According to the invention, identification feedback is carried out according to image information collected by the visible light imaging camera in a complex environment, higher detection precision and detection timeliness are achieved, and the actual engineering requirement that a traditional instrument is accessed to the ubiquitous electric power Internet of Things in an electric power system is met.

The invention discloses a transient-state same-source data comparison method based on wave recording files. The method includes the steps that a channel mapping relation of an acquisition unit and a protection device is acquired; the wave recording files, generated by the same group of faults, of the protection device and the wave recording acquisition unit are obtained; the horizontal coordinateX1 of a sampling zero moment point is obtained; effective values, phase angles, deflection moment absolute time and switch value states of a previous cyclic wave, a later cyclic wave and two later cyclic waves of the same channel of the wave recording files of the same fault of the acquisition unit and the protection device are subjected to comparison and warning. By means of the method, the difference condition of a same data source is monitored in real time by obtaining the fault wave recording files of the acquisition unit and the protection device during each time of start, visual warningand prompting can be achieved, and the operation and maintenance efficiency of an intelligent transformer substation is improved.

The invention discloses an OTDR (optical time-domain reflectometry) device based on optical signal monitoring of multi-optical fiber. The OTDR device comprises a master control unit, an optical sending unit, an optical splitting unit, an oscillograph unit, N coupling unit and N optical splitting detection units, wherein the master control unit is respectively connected with the optical sending unit and the oscillograph unit; the optical sending unit is connected with the optical splitting unit; the optical splitting unit is correspondingly connected with N coupling units, the input end of eachcoupling unit is respectively and correspondingly connected with the optical splitting unit and one optical splitting detection unit, the output end of each coupling unit is correspondingly connectedwith a to-be-tested optical fiber; each optical splitting detection unit is correspondingly connected with the master control unit. The OTDR device disclosed by the invention has the advantages thatthe monitoring and the positioning searching on fault points of multiple to-be-tested optical fibers can be performed at the same time, the testing speed is fast, and the measurement precision is high.

The invention discloses an intelligent substation sampling loop fault determination method based on homologous data comparison. The method comprises a step of performing homologous data configuration,a step of collecting a signal packet, a step of parsing homologous data after receiving the signal packet, wherein the homologous data of the same data source includes first homologous data and second homologous data, a step of determining whether the amplitudes and phase angles of the first homologous data and the second homologous data are valid or not, and a step of calculating a comparison result of the first homologous data and the second homologous data according to a homologous data matching model, determining an alarm state, and determining whether a sampling loop is failed. Accordingto the method, the real-time monitoring and intelligent diagnosis of an intelligent substation sampling loop are facilitated, and the operation and maintenance efficiency is improved.

The invention discloses a power transmission line strain insulator string state monitoring system and a monitoring device thereof. The system comprises a strain insulator string, a state monitoring device, a wireless receiving gateway, a background server and a display terminal. The two sides of the strain insulator string are respectively provided with an intelligent force measurement connectionfitting. The two intelligent force measurement connection fittings are respectively connected with the iron tower and the intelligent force measurement strain clamp. An inclination angle sensor is arranged on each intelligent force measurement connection fitting; the detection state parameters are sent to the wireless receiving gateway, the wireless receiving gateway transmits the data to the background server, and the background server performs comprehensive calculation on the tension, temperature and inclination angle data, analyzes the operation state of the strain insulator string, transmits the operation state to the display terminal and displays abnormal alarm information in real time. According to the monitoring system and the monitoring device thereof, the tension, inclination andtemperature monitoring devices are arranged at the key positions of the strain clamp insulator string, so that all-weather multi-parameter state monitoring of the running state of the strain clamp insulator string can be realized.

A pre-judgment analysis method for equipment defects comprises the following steps: completing fixed asset registration ledger, and classifying and marking equipment in the fixed asset registration ledger; an equipment ledger information input management module; screening and detecting equipment defects; screening out the state quantity of which the value of the effective detection efficiency is greater than a preset threshold value as a concerned state quantity; the processing module sets a plan according to the attention state quantity of each device in the device operation and maintenance management module; and the management monitoring module is used for managing equipment deviation and defects. Omnibearing machine account automatic monitoring and management are carried out on power grid equipment defects, online defect elimination assignment and auditing can be carried out, the equipment operation and maintenance defect elimination efficiency is improved, performance data of equipment are comprehensively monitored, accurate early warning of the equipment defects is achieved, accidents are effectively restrained, early discovery, early prevention and early processing can be carried out, and the system is high in practicability and easy to popularize. Therefore, further expansion of accidents is prevented, the effect of emergency rescue work is improved, and accident loss is reduced.

The invention relates to a street light site navigating method. A street light site information base and street light site navigating software are established, and the street light site navigating software is installed on a mobile phone of maintenance personnel, so that rapid positioning of a street light site can be realized, and rapid searching and synchronous update of data can be realized by making full use of advanced technical means. Not only can the street light site be positioned rapidly and efficiently, but also a communication maintenance management system can be normalized to form a novel paperless communication maintenance management pattern which can meet requirements of practical work, and the street light site navigating method has the advantages of increased operation and maintenance efficiencies of the street light site, reduced time cost, reduced error rate, economy and environmental protection, and is applicable to energetical popularization and application.

The invention provides a track circuit choke transformer work information real-time online monitoring system and a monitoring method. A working state and a work environment of a track circuit choke transformer are monitored in real-time and on-line modes. Multiple sensors and multiple information sources sense real-time work information of a choke transformer, and a monitoring result is transmitted to a monitoring and analysis device of a background through wired and wireless modes. A real-time work state and a work environment of the choke transformer can be visually presented, and a faulty device of the choke transformer can be accurately determined. Through data gathering, comparison, analysis, alarm and early warning, real-time online monitoring and health management of equipment are realized, efficiency of operation and maintenance is increased, and an operation and maintenance work decision is assisted so as to ensure safety and efficiency of railway transportation and production.

The invention, which relates to the field of auxiliary equipment for testing of an arc-suppression coil, provides a capacitor current generator for debugging an arc-suppression coil. A control panel (1) is arranged at the upper part of a chamber of a box body (10; a mounting plate (16) is arranged at the lower part of the chamber of the box body; and an output module and a control module are respectively arranged at the mounting plate to test a primary operation situation and a secondary control situation. Therefore, the blank that the compensation effect of the arc-suppression coil can not be tested currently can be filled and the operation, maintenance, and repairing efficiency of the arc-suppression coil is improved; and the capacitor current generator has the great popularization value. The capacitor current generator having advantages of simple structure and convenient operation is suitable for promotion and application in a large range.

The invention discloses a method for evaluating a use state of a high-speed turnout straight steel rail. The method comprises the following steps: firstly, obtaining turnout steel rail detection data required by state evaluation; then, according to the detection data, establishing a mathematical model for evaluating the use state of the turnout steel rail of the high-speed railway, wherein the mathematical model comprises a state basic scoring part and a disease score deduction part of each detection area; and giving different weights to different measurement items and different detection areas; and evaluating the established mathematical model for evaluating the use state of the high-speed rail turnout through continuously acquired data until the model can intuitively reflect the actual condition of the turnout. According to the method, scientific and effective statistical analysis and other methods are utilized to judge the passing mode of the train, comprehensive evaluation is carried out on the turnout state from multiple angles of wheel sets, frameworks and the whole section of the train body, accurate judgment on the turnout disease condition is achieved, and therefore maintenance of the turnout is scientifically guided, and a support is provided for converting the railway maintenance work from periodic maintenance to state maintenance.

The invention discloses a power cable water inlet sensing device based on a stress enhancement structure. The sensing device comprises three layers of structures, namely a sensing optical fiber, a water absorption expansion material and a stress enhancement structure, wherein the inner layer is the sensing optical fiber, the middle layer is the water absorption expansion material tightly wrappingthe inner-layer optical fiber, and the outer layer is the stress enhancement structure. The sensing device is arranged inside a cable, when water enters the cable, the moisture is absorbed by the middle-layer material and the middle-layer material is expanded, the extrusion effect on the inner-layer sensing optical fiber after water absorption and expansion is enhanced under the constraint actionof the outer-layer stress enhancement structure, the propagation characteristics of an optical signal in the optical fiber are changed, and on-line monitoring of inside water inlet condition of the cable is realized by analyzing the propagation characteristics of the signal of the optical fiber. The sensing device adopts a built-in mode, so that the sensitivity of monitoring and the accuracy of monitoring data are improved, and information support is provided for operation and maintenance of cable lines.

The invention discloses a power transmission tower. The power transmission tower comprises a tower body, a composite cross arm, a connecting and rotating assembly and a limiting assembly, wherein theconnecting and rotating assembly is used for connecting the tower body with the composite cross arm and enabling the composite cross arm to rotate around a rotating axis relative to the tower body, and the limiting assembly is used for limiting the maximum rotating angle of the composite cross arm relative to the tower body. According to the power transmission tower provided by the invention, thepossibility of abnormal discharge in a normal operation condition and the probability of collision between the composite cross arm and the tower body can be reduced.

The invention provides a lightning arrester of a power transmission line. The lightning arrester of the power transmission line comprises a lightning arrester, wherein a lightning stroke signal acquisition unit is arranged in a grounding loop of the lightning arrester in series, the lightning stroke signal acquisition unit comprises a current sensor, the current sensor is connected with an MCU through an integrator and an A/D signal converter, the MCU is connected with a lightning stroke signal detection unit, and the lightning stroke signal detection unit is connected with a signal receivingend. The lightning arrester of the power transmission line has the characteristics of long-distance wireless transmission, no maintenance, no need of battery replacement and the like, remote information transmission and monitoring of lightning counting of the power transmission line can be realized, tower climbing for checking a mechanical lightning counter is avoided, operation and maintenance efficiency of the power transmission line is greatly improved, labor intensity of operation and maintenance personnel of the power transmission line is greatly reduced, a large amount of manpower and material resources are saved, and operation and maintenance cost of the line is saved.

The invention provides a method and system for improving the data quality of a sample data set, and the method comprises the steps: S1, obtaining and screening sample data, and obtaining high-quality sample data; judging the high-quality sample data, and judging whether the high-quality sample data is reserved or not; S2, training the reserved high-quality sample data to obtain a reference model; S3, judging whether the performance of the reference model meets a preset threshold value or not, and obtaining a standard model when the performance of the reference model meets the preset threshold value; S4, predicting the newest sample data through the standard model to obtain a standard prediction result; predicting the latest sample data through the reference model to obtain a reference prediction result; comparing to determine whether the standard model is reserved or not; and S5, when the standard model is reserved, judging that the latest sample data is high in quality. According to the method, the manual screening time is saved, the accuracy of determining that the data is high-quality data is ensured, and the effect of the model is improved.