Research Of Intelligent Building Power Distribution Monitoring System

Power supply and distribution system of modern intelligent building system, not onlycan get electricity from the grid injection, but also can through own micro system tocompensate part of the electricity supply and may supply power to the grid in the case of asufficient and external hardware and software suitable condition. Intelligent buildingmonitoring system of power supply and distribution can timely warn fault, treat theimportantly emergency fault, reduce electricity maintenance staff workload and improvethe reliability of power supply. In the paper, we take the power supply and distributionsystem of a certain building in shape, has set up a monitoring model for the intelligentbuilding power distribution monitoring system, and completed the lighting in the publicarea introduction of single phase photovoltaic inverter power system experimentaldemonstration.In intelligent building power distribution monitoring system, taking the S7-300seriesPLC (CPU315-2DP) as control core, CP343-1as industrial Ethernet communication unit;we have completed instrument signal acquisition of the scene、current protection、fire alarmprocessing、capacitance ark cutting、the intelligent control of the generators. For thehardware simulation, we test it in PLCSIM. Taking winCC6.0as host configurationsoftware, completed the design of PC monitor pictures, we has realized the real-timemonitoring of electrical parameters and alarm record query.Public area lighting is introduced into the design of single phase photovoltaic inverterpower system. We have tested the designed hardware circuit in the simulation andexperiment. Its hardware part includes: main power inverter circuit, sampling circuit of theelectric parameters, and control circuit with DSP28335as the control core. Software partincludes SPWM generation subprogram, ADC sampling subprogram, fault alarmsubprogram, error signal capture unit subprogram and frequency capture unit subprogramand other subprograms.