33results about How to "Improve operation and maintenance" patented technology

The invention discloses a method for diagnosing the transmission chain fault of a wind generating set. The method comprises the steps that a wind generating set transmission chain fault information knowledge base of a fault tree structure is established; the knowledge base is searched according to fault feature information detected in real time, and a corresponding fault tree is located; reasoning is carried out according to preset data in the knowledge base and the bayesian network, the posterior probability P(Fn|S) of the fault trees Fn is obtained, and the probability distribution sequence of the fault trees is obtained; and retrieval is sequentially carried out according to the probability distribution sequence of the fault trees, all triggered bottom events under all the fault trees are obtained through judgment, and a fault reason diagnosis set is formed. The invention further provides a transmission chain fault diagnosing method applying the method for diagnosing the fault. The bayesian network technology is introduced on the basis of a fault tree analysis method, a powerful basis is provided for fast and effective diagnosis of the fan transmission chain fault reason, the shutdown time of the wind generating set is shortened, the manual maintenance cost is reduced, and the power generating rate and economic benefits are increased.

The invention discloses a security access method and system for a device port. According to the same port generation rule and a preset change cycle, the device terminal and the client terminal are based on the unique identification and time of the device terminal to generate a valid for a period of time. Access the port, start the port access listening on the port, change the port in a certain period of time, and release or prohibit the client from accessing the access port generated by the device according to the preset access rules. The invention solves the security access hidden danger of the equipment operation and maintenance port, the operation and maintenance port changes randomly, the access of the operation and maintenance port needs to meet the preset rules, avoids the attack of hackers, and effectively strengthens the operation and maintenance security without adding new equipment.

The invention belongs to the field of computers, and relates to a comprehensive assessment method used for data center running status and based on high-intensity status collection. According to high-intensity data collection for a data center, and then the collected data are classified, gathered, mined and stored, the stored real-time and historical data are comprehensively analyzed, and finally according to the data analysis with multiple dimensionalities, the comprehensive running status of a data center is obtained. According to the comprehensive assessment method used for the data center running status and based on the high-intensity status collection, the comprehensive running status of the data center is relatively and visually assessed, and running maintenance of the data center can be improved.

The invention relates to a method for evaluating running reliability of a power distribution network in a power system, and belongs to the technical field of reliability analysis of the power system. According to the method, health indexes in unit elements in the power distribution network are taken as the basis, and the health index of the system is evaluated through combination of conversion calculation of the health indexes and the health index probability form and the connection manner of the health indexes and the health index probability. According to the analysis result, repair cycle of the equipment is reasonably determined; repair cost of power grid running and power equipment is reduced, and running reliability of the equipment is improved. The health state of the power distribution network is evaluated through the index form of numerical values from one to ten, and the theoretical basis is provided for reliable running and repair plan making of the power distribution network, so that planning, operation, maintenance and the management level of the power distribution network can be further improved, and the asset management system of the power distribution network is perfected.

The invention relates to a maintenance system and method capable of maintaining switch equipment in a hot-line manner. The maintenance system is characterized in that a normal operating condition of the maintained switch equipment is simulated by using an electrical locking unit when maintenance is performed on the maintained switch equipment so as to prevent the protection misoperation of an electric power system. In addition, when the electric power system breaks down and needs protection in the maintenance process, the maintained switch equipment is maintained and cannot perform a protection operation, a secondary signal comprehensive processing unit sends a corresponding signal to protection measurement and control equipment in the electric power system, and the protection measurementand control equipment performs a protection operation by using other switch equipment such as higher-level protection so as to achieve backup protection for the electric power system. Therefore, the system does not cause misoperation for the maintained switch equipment in the maintenance process, so that fault detection and emergency maintenance under a hot-line condition can be achieved through the system, and thus the trouble of going through equipment power failure procedures are saved. The maintenance system can reduce the planned and non-planned power failure time especially for a high-voltage electric power system.

The invention discloses a cloud broadcasting system, a mixed broadcasting system and a cloud broadcasting method. The cloud broadcasting system comprises a local broadcasting control system, a material server and a cloud server, wherein the local broadcasting control device is used for controlling pushing programs and program materials; the material server is used for providing the program materials to be broadcasted; the cloud server is connected with the local broadcasting device and the material server, receives the pushed programs and the program materials and sends program materials to a designated position after processing the program materials. According to the cloud broadcasting method, the programs and the program materials are pushed to the cloud server from the local; the cloud server processes the received program materials to a TS (transport stream); and the TS is sent to the designated place. The cloud broadcasting system, the mixed broadcasting system and the cloud broadcasting method have improvements in aspects of construction cost, cycle, operation maintenance, upgrade, safety and the like, conveniently achieve heterogeneous and remote broadcasting which can be achieved basically through machine rooms with the Internet and necessary video equipment.