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299results about How to "Improve status" patented technology

Systematic control method for repair based on condition of electricity transmission equipment

The invention discloses a systematic control method for repair based on condition of electricity transmission equipment, which divides the repair based on condition of an electricity transmission system into two steps, i.e. the collection of the electricity transmission equipment information and the formulation of a strategy for systematic repair based on condition, wherein the collection of the electricity transmission equipment information comprises the collection of the equipment condition information and the collection of the operating information of the electricity transmission system; and the formulation of the strategy for systematic repair based on condition comprises the following steps: firstly, forming a basic database of the repair strategy, solving by adopting the control algorithm of a repair based on condition system, and checking and outputting to obtain an optimum repair arrangement strategy. The method provided by the invention can reduce the blindness in the repair course, avoids the insufficient repair, comprehensively balances the purposes of enhancing the service life of the equipment and improving the reliability of the system in the repair period, arranges the time interval and type of the repair of the electricity transmission equipment from the point of maximum integral benefit of the system, and enhances the economy and reliability of the repair arrangement of the system.
Owner:XI AN JIAOTONG UNIV

Fault case library, fault tree and fault spectrum construction method

The invention relates to a fault case library, a fault tree and a fault spectrum construction method. Firstly, an efficient multi-level state detection data comprehensive index model is established, and test data are modeled from multiple dimensions. The intellectualization research of expert experiences, case libraries and rule bases is developed, and diagnosis techniques and multi-information fusion techniques based on various types of standardized state detection data are used for improving the accuracy of analysis and diagnosis. Secondly, construction techniques of standardized and intelligent typical fault case libraries are studied on the basis of fault case libraries and related relational libraries, and then the fault tree and the fault spectrum are constructed based on the fault case. Finally, a typical case library for on-site operation and maintenance of transformer equipment is constructed. The method can effectively ensure that power equipment operates under normal conditions, and can detect and eliminate the malfunction of the power equipment in time by detecting the data, the specialization and intelligence level of the on-site operation and maintenance is improved,the efficiency of transportation inspection and management and control capability for equipment status are improved, and status overhaul and assist decision-making are strengthened.
Owner:WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST +2

Fuzzy Gaussian sum particle filtering method and device as well as target tracking method and device

The invention discloses a fuzzy Gaussian sum particle filtering method and device as well as a target tracking method and device. The fuzzy particle filtering method comprises the following steps: a state posterior probability density function, an observation noise probability density function and a state noise probability density function of a last target moment are established with a Gaussian sum method, the prediction probability density function of a target state of the current moment is acquired with Gauss-Hermite quadrature rules and the Monte Carlo principle, the particle weight and integral point weight of the current target observation moment are acquired with the fuzzy clustering principle, the weight of each Gaussian term is calculated for calculation of the mean and covariance of each Gaussian distribution, resampling is performed on the Gaussian terms, G Gaussian terms with larger weights are acquired, then the state posterior probability density function of the current target observation moment is acquired with the Gaussian sum principle, and particle filtering is finished. With adoption of the scheme, the filtering accuracy and estimation performance of a target state can be improved effectively.
Owner:KUNSHAN RUIXIANG XUNTONG COMM TECHCO

Intelligent building integrated management platform

InactiveCN107895329AOvercoming low integrationIncrease intelligenceData processing applicationsTransmissionPriority listElectronic map
The invention discloses an intelligent building integrated management platform, and the platform comprises a user terminal, a data processing center, an interface adaption terminal and a database. Theuser terminal achieves the access of a user instruction, achieves the monitoring of the information state of an intelligent building according to the user instruction, receives and displays an alarmuploaded by a weak electronic system, and is used for integrating the control information and state information of the weak electronic system at one interface for display. The interface adaption terminal is used for protocol adaption. The data processing center is used for processing a request of the connected weak electronic system, and achieving the real-time interaction of data according to theaccess instruction of the user terminal, the database and the information inputted through the interface adaption terminal. The database stores an intelligent building electronic map, a pre-subsystemlinkage relation table, a linkage plan, an event priority list, and the response delay corresponding to each priority. The platform enables all weak electronic systems to be integrated for managementand linkage, thereby saving the manpower, and improving the quick response capability of the intelligent building to actual events.
Owner:WUHAN HONGXIN TECH SERVICE CO LTD

Two-dimensional frequency-phase scanning small target detection system

The invention provides a two-dimensional frequency-phase scanning small target detection system, aiming to provide a target detection system which is high in discovery rate, optimal in low-attitude detection performance, and high in anti-interference capability. The antennas of a horizontal sub-array and a vertical sub-array are connected with their respective microwave networks through their respective T/R components, the microwave networks are connected with receivers via n channels, the control information is sent to the T/R components via wave controllers through a time sequence and timing generator, frequency synthesizers are controlled by the time sequence and timing generator to generate excitation signals, the excitation signals are sent to the microwave networks via pre-amplifiers, the microwave networks radiate the beam through the T components to the antennas to the specified detection airspace and control the R components in the arrays to receive the radar echoes specified by emission, the radar echoes are sent to the receivers to signal processors for target detection after being amplified by each column of R components, the target detection data of the horizontal sub-array and the vertical sub-array are integrated, so that the high angle detection accuracy of orientation and pitching is achieved.
Owner:LINGBAYI ELECTRONICS GRP

An early fault prediction method for hydraulic equipment based on the fusion of multi-source condition monitoring information and reliability features

The invention discloses an early fault prediction method of hydraulic equipment based on the fusion of multi-source condition monitoring information and reliability features, aiming at providing a method capable of identifying early fault signals, reducing false alarm and missed alarm of early warning, and improving the accuracy of fault prediction. The invention also discloses an early fault prediction method of hydraulic equipment based on the fusion of multi-source condition monitoring information and reliability features. The key points of the technical scheme are as follows: the association rules between the monitoring information of hydraulic equipment and the condition evaluation is mined; a multi-sensor based monitoring data fusion method is constructed to reduce the dimension of monitoring data; monitoring information and reliability life data are combined, a parameterized failure rate function (PCM) is constructed to predict the early fault evolution process of hydraulic equipment, and provide powerful early warning information for the operation and maintenance of hydraulic equipment. Compared with the traditional hydraulic fault prediction method, this method can effectively improve the prediction accuracy and broaden the prediction interval by fusing the reliability characteristics in the condition monitoring information of hydraulic equipment.
Owner:SINOPEC OILFIELD EQUIP CORP +1

Equipment fault intelligent diagnosis method based on artificial neural network

The invention discloses an equipment fault intelligent diagnosis method based on an artificial neural network. The method comprises the following steps: S1, collecting equipment fault information through a test equipment fault diagnosis system; S2, establishing a neural network model, and training the neural network model by taking the fault information as a learning sample; S3, loading the trained neural network model to a neural network inference engine; s4, acquiring a signal of the test equipment in real time, and monitoring signal abnormality; and S5, taking the abnormal fault as a to-be-identified sample, inferring through a neural network inference engine, finding out a fault reason, positioning the fault and outputting a solution. According to the invention, a neural network systemis used for processing diagnosis of test equipment; the problems of 'bottleneck 'of knowledge acquisition, 'combined explosion' of reasoning and the like in a traditional system structure are solved,the range of state monitoring and fault diagnosis is expanded, the real-time requirement of state monitoring and fault diagnosis is met, and it is guaranteed that fault diagnosis and testing steps are synchronously carried out.
Owner:SHANGHAI ADVANCED AVIONICS

Short-chain branch cross-linked water-retaining solvent layer controlled-release type polycarboxylic acid slump retaining agent and preparation method thereof

The invention provides a short-chain branch cross-linked water-retaining solvent layer controlled-release type polycarboxylic acid slump retaining agent and a preparation method thereof. The polycarboxylic acid slump retaining agent contains the following components in parts by weight except water: 320-325 parts of polyether macromonomers, 3.0-4.5 parts of sodium hypophosphite, 2.0-6.0 parts of phosphate, 0.5-3.5 parts of hydrogen peroxide, 1.0-2.0 parts of ammonium persulfate, 101.7-124.8 parts of an initiator, 115-160 parts of a small monomer solution and 10-15 parts of liquor of industrialsodium. The method comprises the following steps: 1, performing primary charging; 2, performing secondary charging; and 3, preparing the finished product. According to the method, a reducing agent containing hydroxyl, amido and phosphate, a carbodiimide cross-linking agent, phosphate and other components are adopted, anchoring ability and moisture conditions of the short solvent layer are enhanced, a lubricating effect and a hydrophilic state of cement-based binding material granules are improved, cohesiveness of a cement-based binding material mixture is increased, and the segregation and weeping probability of the mixture is reduced.
Owner:HUBEI UNIV OF TECH

Field smart operation and maintenance system for electric power system

ActiveCN107908175AStrengthen remote control and real-time technical support capabilitiesImprove the efficiency of inspection workElectric testing/monitoringTransmissionPersonalizationInstrumentation
The invention discloses a field smart operation and maintenance system for an electric power system. The system includes hierarchy classification and sorting of data, standardization and characteristic extraction of state detection data, norm establishment between an instrument and a smart operation check box, communication norm establishment between the smart operation check box and a center side, wireless real time transmission of video data streams, high magnification video compression, establishment of a high-efficiency multi-stage state detection data comprehensive indexing model and customized display of state detection data analysis diagnosis technique. According to the invention, field operation standardization and data standardization can be realized, data and analysis algorithm share between a field side and the center side can be realized, the data analysis capability of the field side is improved, and remote control and real time technique support capability of field operation and maintenance are enhanced. Therefore, professionalization and smart level of field operation and maintenance are improved, operation check working efficiency and equipment state control capability are improved, and state maintenance and auxiliary decisions are enhanced.
Owner:WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST +2
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