Design And Implementation Of The Monitoring System For Transformer Oil Based On Siemens PLC

Transformer oil is important to the power transformer internal insulation medium, A large number of transformer oil need to store in order to maintain the normal production in traditional transformer manufacturers.At present our country most transformer manufacturers use of transformer oil and oil management still stays in the semi-automatic level, the production of oil, the oil injection, net oil operations cannot be accurately quantified, oil loss situation, bring big loss to the enterprise;Oil purifier temperature control effect is not good, filter oil pipeline design is not rational efficiency and a series of problems.According to the control demand, manufacturers actual to transformer oil management system overall scheme design, selection of Siemens S7-300 series PLC as slave computer,Using the profibus-dp bus connection ET200 M from station built distributed I/O control system.Designed the electrical schematic diagram and the system software.Analyzed the realization of the high-speed pulse output flow metre, for temperature control in the process of oil purifier in the net, the conventional PID control, fuzzy parameter self-tuning PID control and small neural Model CMAC(Cerebellar Model Articulation Controller) and PID parallel control, Simulationed in Matlab software.To analyze the simulation results, finally choose the CMAC and PID parallel control strategy to control the oil temperature.Use the MCGS development PC interface, can monitor the amount of oil in the tank real-time, oil cleaning process, the filling operation, static pressure test.Can provide data query production storage, make the management of the oil and use all achieve automation, Accurate records in every use links, the risk of product loss avoided for the enterprise.Well satisfy the needs of transformer manufacturing enterprises.