当前时期，国内经济呈现出良好的发展趋势，电气自动化技术在很多领域中得到了应用。传统电气自动化控制主要是通过电气联结线路来实现联结目的，运行的整个过程中必须要适时展开检查、维修工作，而且线路安装显得十分复杂，机器也会出现一定程度的损伤，质量无法得到切实保证。将自动智能技术予以充分应用可以使得这些问题得到切实解决。从工程自动化控制来说，利用此项技术可以使得自动化水平有大幅提升，同时能够对自动化产业的发展起到一定的促进作用。
With the rapid development of power system,the scale of distribution network is expanding day by day,and the access quantity of distributed power sources is also increasing.People from all walks of life put forward higher requirements for the safety and reliability of distribution network.In order to ensure the normal operation of distribution network,this paper puts forward a fault handling method of distribution network based on relay protection and distribution automation technology.This paper discusses the fault handling principle and measures of distribution network from two aspects of relay protection and distribution automation,and provides some reference for relevant personnel.
With the improvement of the development level of the power grid, the requirements of power communication are increased. Only by using the power information and communication technology reasonably, can the power grid power system be in a stable state of operation. Therefore, power enterprises should scientifically design the application scheme of power information and communication technology based on the development needs of smart grid, so as to continuously improve the development level of power information and communication. This paper analyzes the way to solve the problem of power communication in smart grid, and then discusses the application of power information and communication technology in smart grid, hoping to provide some reference for related research.
Solar energy as the current clean energy,how to use rationally,strengthen the use of photovoltaic technology,and energy saving monitoring is the focus of current photovoltaic power generation technology research.This paper analyzes the design of solar photovoltaic power generation system,introduces solar photovoltaic technology and photovoltaic power generation principle,analyzes its control objectives and control strategies,and obtains the control countermeasures of solar photovoltaic power generation grid-connected inverter.This paper summarizes the principle of solar photovoltaic energy and the composition and classification of solar photovoltaic system,determines the best design parameters and configuration scheme,so as to improve the power generation efficiency and economy of photovoltaic system.
Aiming at the outstanding problems such as the lack of intelligent operation and maintenance management of integrated wiring system and the difficulty in troubleshooting,this paper analyzes the current situation of intelligent operation and maintenance management of integrated wiring system,focusing on the research of intelligent operation and maintenance management system of integrated wiring system,so as to provide reference for broadening the operation and maintenance ideas of information-based intelligent integrated wiring construction,improving the level of intelligent operation and maintenance management of integrated wiring system and accelerating the pace of intelligent operation and maintenance management construction of integrated wiring system.
This paper analyzes the influence of electromagnetic interference,climate environment and other factors on the reliability of power communication system,introduces the reliability evaluation methods and technologies such as Failure Mode and Effect Analysis(FMEA),Failure Mode,Effects and Criticality Analysis(FMECA),fault tree analysis,compares and analyzes each method,and discusses in detail the system structure design,component selection and configuration design,reliability test and verification.Through the analysis of practical cases,the effectiveness and feasibility of the proposed methods and technologies were verified.Finally,optimization measures were proposed for the reliability design of the power communication system,including optimizing system design,improving component selection,etc.,to improve the reliability and applicability of the system.
In order to reduce the outage probability of UAV cooperative communication multi-link scheduling and improve the performance of UAV cooperative communication in high-voltage line environment,a multi-link scheduling method of UAV cooperative communication in high-voltage line maintenance is proposed.By calculating the path loss of channel link,the overall performance and transmission quality of UAV cooperative communication are ensured.Select the optimal path for UAV to repair the high-voltage line,and avoid the interference of idle nodes on communication when transmitting signals to the receiving end of UAV,so as to realize efficient scheduling of UAV data link.The experimental results show that the proposed method has less bit error rate and time delay,and has better performance advantages in communication multi-link scheduling.
The existing resource allocation method can not improve the downlink throughput in the downlink wireless communication of the Internet of Vehicles,resulting in low utilization rate of allocated resources.In order to solve this problem,5G network technology is introduced to study the allocation method of downlink wireless communication resources in vehicle networking.Using the technology of 5G network,the awareness model of downlink wireless communication resources in vehicle networking is constructed.Combined with the perception results,the vehicles in the Internet of Vehicles are clustered;set Signal-to-Interference and Noise Ratio(SINR)constraints of downlink wireless communication links and allocate communication resources.The comparative experiments show that the downlink throughput of vehicle networking is significantly improved after the proposed allocation method is applied,and the utilization value of communication resources is improved.
In order to solve the problems of traditional distribution network automation equipment terminal DC system without detection equipment,without remote monitoring,equipment information discrete,a distribution network DC monitoring system is proposed.The system integrates battery intelligent diagnostic technology,monitoring and warning technology,parallel DC power supply technology,realizes multi-device information acquisition,transmission and control function,and has multi-channel dry contact signal uploading function to monitor the operation status of DC screen,battery monitoring data and other on-site devices,and at the same time,it can transmit the data in real time to the back-end server through the power network for storage,analysis and processing,release display and fault alarm and other operations.Meanwhile,the data can be transmitted to the backstage server through the power private network for storage,analysis and processing,release display and fault alarm.
In order to prevent the self-provisioning device ready to cast on permanent faults,reduce the secondary impact of large fault current on the grid,reduce the impact of the insulation damage to the equipment,or to improve the success rate of reclosing,to prevent small power supply on the Internet in the secondary circuit function of the substation equipment,network operation or reclosing unsuccessful,in the corresponding protection or safety from the equipment action,need to consider the corresponding interlocking and intersection to realize.Therefore,the article mainly analyzes and researches the power system about 110 kV self-transmission blocking logic and inter-cutting logic,in order to provide reference for the power grid in the design and construction of the circuit improvement and standard development.
In order to improve the efficiency of power regulation fault processing and avoid fault expansion,this article proposes an effective power regulation fault diagnosis method based on text mining of alarm signals.First,based on the pre-processing of alarm signal text,the fault diagnosis process of power regulation is determined.At the same time,combined with the real-time alarm signal vectorization processing,Support Vector Machine(SVM)is applied to scientifically classify the alarm signals.Secondly,taking the actual alarm signal of a certain power regulation system as an example,the effectiveness and reliability of the fault diagnosis method in this paper are verified.
With the development of society and the growing demand for electricity,smart grid has become an important development trend in the power industry.The research addresses the problems of smart grid construction and proposes a smart grid construction method of electric power combined with electricity consumption information collection.Based on the system communication,we design the preprocessing method of electricity consumption information collection data and the missing value calculation method,and build the system communication architecture composed of the pre-communication module and the communication platform layer.The experimental results show that the data transmission rate fluctuation of the system constructed by the research method is kept within 100 Mb/s in Alpha cluster and Bravo cluster,and the research method smoothly extracts three types of power features.It shows that the research method can be effectively applied in the smart grid system construction process.
In order to solve the problems of small identification range and low identification rate of abnormal data of electric energy metering devices,a design and analysis of abnormal data identification method of electric energy metering devices based on Logistic algorithm is proposed.By extracting the characteristics of abnormal data identification,the multi-objective method is adopted to expand the scope of data identification.Singular Value Decomposition(SVD)+ multi-objective rapid identification matrix is designed,and the abnormal data identification model of Logistic electric energy metering device is constructed,and the data identification processing is realized by multi-interval boundary correction.The test results show that the recognition rate of abnormal data of electric energy metering device based on Logistic algorithm can reach above 6 Mb/s,that is,the abnormal data recognition effect of the designed method is better,the error is controllable,and it has good practical application value.
By analyzing the electrostatic and electromagnetic components an improved numerical calculation model of induced lightning strike overvoltage is proposed.Simulation analysis and practical application verification are carried out,the results show that the improved model can accurately calculate the induced lightning strike overvoltage.Meanwhile,the article proposes an over-excitation over-voltage identification method using wavelet function,and applies the improved model and identification method to the lightning over-voltage fault localization of 10 kV distribution overhead line.The validity and feasibility of the method are proved through verification.
With the continuous deepening of modern urban construction,the construction of smart cities based on modern technology has become a key aspect of social construction.As the latest technology in the field of communication technology,5G technology can provide strong support and assistance for the innovative application of modern technology,achieving effective connectivity between people,networks,and things.Study on the application of 5G technology in smart community management system from the perspective of urban community.On the basis of defining the concepts of 5G technology and smart community,this paper makes a concrete analysis of its practical application,including system architecture and system functions.I hope this study can provide some reference and help for the application of 5G technology in the field of intelligence.
As an important equipment in the power system,the operation quality of transformers determines the quality of power supply in the power grid.Once problems occur in this link,it is easy to have a serious impact on the stability of the entire power grid.Therefore,in the daily production and operation process,power enterprises should comprehensively protect the safety of power transformer operation,and provide strong support for the stable operation of transformers through high-voltage testing technology.Based on this,this article analyzes the high-voltage testing technology of power transformers,studies the implementation conditions and methods of high-voltage testing technology,explores the problems existing in high-voltage testing,proposes effective solutions to the problems,fully utilizes the role of high-voltage testing technology,strengthens the stability of the power system,and promotes sustainable development of power enterprises.
In order to improve the accuracy of thermal fault identification of electrical equipment and reduce the number of abnormal accidents of grid power supply service caused by thermal faults,electric pulse infrared imaging technology is introduced to design a brand-new identification method of thermal faults for electrical equipment,taking a substation as an example.The emissivity of the electric pulse radiation line is set to realize the acquisition of the temperature field image of the electrical equipment based on the electric pulse infrared imaging technology.At the same time,the mean value method and mean value filtering method are used for image graying and filtering,and after completing the infrared image processing,the relative temperature difference method is introduced for the extraction of high-temperature regions in the image,so as to realize the diagnosis of thermal faults of electrical equipment in operation.Experimental results show that the application of the designed thermal fault identification method is effective,which can ensure that the identification results are highly consistent with the actual fault results of the electrical equipment,accurately investigate the fault phenomena of the electrical equipment in operation,and improve the reliability and safety of the operation of the electrical equipment.
