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183 results about "Online security" patented technology

Online Security. The internet offers access to a world of products and services, entertainment and information. At the same time, it creates opportunities for scammers, hackers, and identity thieves.

Third-party authentication security protection system and third-party authentication security protection method based on online security protection of electronic evidence

The invention discloses a third-party authentication security protection system and a third-party authentication security protection method based on the online security protection of an electronic evidence and relates to an information processing technology of a computer. The method comprises the following steps that: after sending a security protection request to a server side, a client side generates a Hash value associated with electronic data which is subjected to security protection and transmits the Hash value to the server side for storage; the client side sends an authentication security protection request, and the server side compares a client side Hash value which is stored in the system with the Hash value which is transmitted by the client side to judge whether the security protection behaviors of the client side are objective and real; communication between the client side and the server side is encrypted by using a secure cryptographic algorithm; the server side carries out association processing on all Hash values in the system to ensure that the Hash value which is stored in the server side and associated with the electronic data cannot be falsified; and when the used cryptographic algorithm is decoded, the client side applies for updating of security protection, and carries out security protection processing on data to be required for security protection and result data generated by the last security protection application again so as to ensure the continuous security of the system.
Owner:重庆兴际云大数据科技有限公司

Electrical power system on-line safety and stability evaluation forecast failure collection adaptive selection method

The invention relates to a self-adaptive screening method for an anticipated fault set in power system security and stability on-line assessment, which is suitable for determining the anticipated fault set in the static, transient and dynamic security and stability on-line assessment of the power system. The method adopts the core concept that the fault set required to be recalculated in the security and stability on-line assessment is determined according to the mode of the security and stability margin of all anticipated faults given by the security and stability on-line assessment in the previous round of the power network. The invention takes the power network security and stability margin and the security and stability mode as the quantitative index of the power network security and stability degree, takes the security and stability margin as the index, and screens the anticipated fault subset required to be recalculated from the anticipated fault universal set by combining the security and stability mode and the degree of change of the running state of the power network as the dynamic anticipated fault set which meets the practical demands of the engineering and is changed along with the running state of the power network; the scale of the anticipated fault set used for the security and stability on-line assessment under the current time section can be reduced, and the computing speed for the security and stability on-line assessment is increased.
Owner:NARI TECH CO LTD

Receiving-end network voltage stabilization overall process situation assessment and prevention and control method based on responses

The invention provides a receiving-end network voltage stabilization overall process situation assessment and prevention and control method based on responses. The method comprises the steps of S1, obtaining various off-line simulation data or real-time measuring data; S2, constructing equivalent power transmission models of nodes according to node practical transfer power; S3, obtaining a node quiescent voltage stability margin index Vsi of equivalent power transmission model parameters of each node; S4, constructing a node reactive compensation assessment index according to the equivalent power transmission model parameters of each node; S5, setting an early warning threshold value Ncr of the node quiescent voltage stability margin index, and calculating a load shedding estimation of a weaker node when the quiescent voltage stability margin index Vsi of each node is smaller than the Ncr. According to the receiving-end network voltage stabilization overall process situation assessment and prevention and control method based on the responses, a weak node or a weak area in a current operating mode can be found out, a rapid estimation of reactive compensation levels and load shedding of each node is achieved, and the method can be widely applied to the fields of power network planning and online security monitoring.
Owner:STATE GRID CORP OF CHINA +2

Nonlinear fuzzy detection method for operating safety of power cable tunnel

InactiveCN102621434AAchieve securityReduce abnormal power outagesElectrical testingSafety indexSocial benefits
The invention discloses a nonlinear fuzzy detection method for operating safety of a power cable tunnel. The method comprises the following steps of: determining a project layer, a subproject layer and an index layer in a model, detecting the index layer and acquiring data; establishing a comment set; establishing a deterioration grade of each evaluation index and a membership function matrix of a corresponding comment set; determining weight of each level of evaluation indexes; sequentially calculating fuzzy evaluation matrixes of the index layer and the subproject layer by using an analytic hierarchy method until a final fuzzy evaluation result vector is obtained; and determining an evaluation result of an operating safety state of the power cable tunnel by using a maximum membership degree method. Single parameter early warning of the operating state of the cable tunnels and cables is realized, comprehensive on-line safety index evaluation and early warning are realized, technical support is provided for timely and effectively processing operating hidden dangers and failures of the cables, and after the project is finished, abnormal power failure can be reduced, and major disasters can be warned in advance; and an inspection workload of a worker is reduced. After the project is finished, the method can be popularized nationwide and has high economic and social benefits.
Owner:SHANDONG UNIV

Online secure device provisioning with updated offline identity data generation and offline device binding

A system for generating new identity data for network-enabled devices includes a whitelist reader configured to extract attributes from a whitelist. The whitelist includes, for each device specified in the whitelist, a previously assigned identifier of the first type. The previously assigned identifiers of the first type are linked to identity data previously provisioned in each of the respective devices. A data retrieval module is configured to receive the identifiers of the first type from the whitelist reader and, based on each of the identifiers, retrieve each of the previously provisioned identity data records linked thereto. A new data generation module is configured to (i) obtain a cryptographic key associated with the identity data previously provisioned in the devices specified on the whitelist and the corresponding identifiers of the first type, (ii) generate new identity data records each linked to a new identifier and (iii) encrypt each of the new identity data records with one of the cryptographic keys and link each new identity data record to the identifier of the first type corresponding to each respective cryptographic key. A data output module is configured to load onto an external source the encrypted new identity data records along with their respective new identifiers and their respective previously assigned identifiers of the first type.
Owner:GOOGLE TECH HLDG LLC

Water quality on-line safe prealarm system and method based on aquatic organism avoidance behavior

The invention relates to a water quality online security early warning system and method thereof. The water quality online security early warning system comprises a biology avoidance behavior sensor which consists of two testing tubes, wherein, the two tubes are communicated through a two-way in the middle and parallel with each other; the two tubes are respectively provided with two groups of stainless steel monitoring electrodes, each group of electrodes consists of a signal transmitting electrode and a signal receiving electrode, wherein, the signal transmitting electrode forms a positive rotation low voltage alternating electric field in the testing tube, and the signal receiving electrode can induce changes of the electric field; the changes of the electric field are transmitted to a signal collecting device, and displayed through a display after being processed. The invention can display behavior change signal of a tested biology with the mode of electrical signal received from multi-point monitoring, can achieve online biology monitoring of original position, online and real time via analyzing and evaluating the electrical signal, and can warn early against unknown contaminants in water body, and has very important indicating effect for the investigations of environmental pollution, in particular for paroxysmal and severe accidental changes.
Owner:RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI

On-line platform-based power grid accident pre-arranged plan automatic realization method

The invention discloses an on-line platform-based power grid accident pre-arranged plan automatic realization method which comprises the following steps: a forecast trend of a power grid is obtained; an anticipated accident set is established; emergency control aid decisions and control objects and post-accident power grid preventive control aid decisions and control objects for the anticipated accident set are generated; an accident pre-arranged plan is generated and is chosen as a matching pre-arranged plan, and therefore a power grid accident pre-arranged plan is realized. According to the on-line platform-based power grid accident pre-arranged plan automatic realization method provided in the invention, based on an on-line safety and stability analyzing system, complete power grid accident pre-arranged plan automatic realization processes are designed via strict trend prediction, scientific accident anticipation and fault surface search, and mature operation analysis check and control aid decisions; a function mechanism via which power grid accident pre-arranged plans can be automatically edited, the pre-arranged plans can be instantly popped out when accidents occur and safety monitoring of whole processes can be realized is established; improvement and high-efficiency application of pre-arranged plan quality are facilitated, and labor intensity and accident processing risk of dispatchers are lowered.
Owner:STATE GRID CORP OF CHINA +1

Rapid evaluation method for transient angle stability based on comprehensive causal analysis and machine learning

ActiveCN108876163AAvoid Time Domain SimulationCalculation speedResourcesOperation modeCluster based
The invention discloses a rapid evaluation method for transient angle stability based on a comprehensive causal analysis and machine learning, which comprises dividing a historical operation mode sample into several operation mode clusters based on historical data stored by a transient stability evaluation function of online security analysis applications, describing the transient angle stabilitymargin by linearization formula according to the difference between the modes, and extracting a key feature quantity of a power grid; constructing a deep learning model and using a historical data sample to train by taking the key feature quantity as an input quantity and taking a historical operation mode cluster classification as an output quantity, establishing a relationship between a currentreal-time operation mode and the historical operation mode, and estimating the transient angle stability of the current real-time operation mode. According to the rapid evaluation method for transientangle stability based on the comprehensive causal analysis and machine learning, the calculation time consumption can be effectively reduced, and the quantitative analysis results of the power grid transient angle stability can be quickly obtained while ensuring the accuracy of the transient angle stability analysis. This helps to detect the transient operation risks existing in the power grid and improve the safe operation level of the power grid.
Owner:NARI TECH CO LTD +2
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