| The building power distribution system is an important part of the power supply and distribution network,and its reliability,safety and stability directly affect the power supply quality of the entire system.According to statistics,about 80% of the faults in the current power system occur in the power distribution link.How to quickly locate and deal with faults is one of the key issues in the research of power distribution systems.With the promotion and application of renewable energy,the fault location and processing of building power distribution systems have become more and more difficult.Therefore,research on fault location of building power distribution systems with distributed power generation has certain academic significance and engineering value.The fault location of the traditional building power distribution system relies on the power distribution automation system that is centrally controlled by the central master station,which has problems such as difficulty in cross-system information sharing and poor expansion and coordination capabilities,resulting in slow fault location and low accuracy.The new building intelligent platform technology is based on a centerless,flat control architecture,which effectively overcomes many problems in the existing centralized layered architecture,and has broad application prospects in the fields of smart buildings,smart cities and smart grids.The thesis combines the new building intelligent platform technology to carry out the following research on the problem of fault location in the building power distribution system:(1)Developed a building power distribution system simulation model based on a new building intelligent platform.The control algorithm in the new building intelligent platform is non-centralized and distributed.At this stage,it is difficult to carry out the engineering application test of the algorithm,and there is a risk of damaging the mechanical and electrical equipment.It is necessary to build equipment simulation models for simulation testing and verification in combination with the swarm intelligent simulation system in the new building intelligent platform.Therefore,this article summarizes the composition and operating principles of the building power distribution system,as well as the characteristics of common fault types,and analyzes the impact of the access of distributed power sources on the fault location of the power distribution system.The building power distribution system is divided into system power,power distribution lines,and distributed power generation models.Combined with the equipment model development rules and procedures in the new building intelligent platform,the equipment simulation model of the building power distribution system is encapsulated to provide physical simulation model support for the subsequent construction of the fault location simulation system of the power distribution system.(2)The applicability of the intelligent optimization algorithm in the new building intelligent platform is studied,and an improved binary bat algorithm for fault location of the power distribution system is designed in combination with the new building intelligent platform.The algorithm uses the collaboration mechanism between computing processor nodes to interact the optimal fitness value and the corresponding position information of the bat in each iteration,thereby improving the algorithm’s global search capability and convergence performance.The distribution system fault location simulation test was carried out in multiple scenarios such as distributed power generation access and information distortion.The simulation results show that under the same conditions,the improved binary bat algorithm based on the new building intelligent platform has better convergence performance and global search ability than other traditional algorithms.(3)Based on the building power distribution system equipment simulation model and fault location algorithm in the new building intelligent platform,a building power distribution system fault location simulation system is built.The system uses the equipment simulation model to provide the fault information of the distribution system,and realizes the location through the fault location algorithm.The simulation system verifies the feasibility of the improved binary bat algorithm based on the new building intelligence platform in the fault location of the building power distribution system,and provides a reference for the development and engineering application of the swarm intelligence algorithm in the new building intelligence platform.Figure [54] table [9] reference [67]... |
PDF Full Text Request