System Design And Algorithm Research Of Repelling Birds In Substation Based On Ultrasonic Parametric Array

Substations are an important part of the power system,which are responsible for receiving and distributing electrical energy.Bird damage is one of the key factors affecting the normal operation of substations.Bird nesting and excretion activities greatly affect the safe and stable operation of substations.Therefore,timely and effective bird repelling becomes an important guarantee for the normal operation of substations.In this thesis,an improved ultrasonic parametric array system is designed for the problem of bird repelling in substation,and the key theories and algorithms involved are studied.The ultrasonic parametric array is used for substation repelling.The ultrasonic parametric array not only can directionally emit ultrasonic energy,but also can use the nonlinear action of ultrasound in the air to directionally emit audible sound,and the sound energy used for bird repellent can be concentrated on the transformers,power lines and towers that are often found in birds.The equal spatial range not only effectively achieves bird repelling,but also avoids noise interference to other areas of the power station.A high precision and fast ultrasonic transducer modeling method is researched,and a highly automated ultrasonic transducer parameter measurement and sorting system is completed based on NI ELVIS.The large number of ultrasonic transducers needed to make ultrasonic parameter array can be quickly tested and classified.An efficient design method of power driving circuit of ultrasonic transducer array is studied.The ultrasonic transducers with consistent parameters are concentrated on an ultrasonic transducer array,and the values of compensation inductance and compensation capacitance are calculated accurately.Based on the above work,an ultra-low power DSP chip TMS320VC5509A and single sideband modulation algorithm are used to complete the design of an efficient ultrasonic parametric array system.In this thesis,the ultrasonic parametric array is used for the first time in the substation to repel birds,the designed system reaches the requirements for bird repelling,which is of great significance for ensuring the stable operation of the power system.At the same time,the technology of ultrasonic parametric array is also deeply researched,which plays an important role in promoting the development of ultrasonic parametric array technology.