Research on multicomponent transmission line anti-breakage device based on coupling capacitor voltage

Transmission lines are an important part of the power system, and to reduce the risk of their being damaged by external forces such as cranes, a non-contact crane anti-breakage device for multi-component transmission lines is designed. Firstly, based on the principle of spatial capacitance voltage division, the transmission line voltage data is obtained by using the capacitance between the transmission line and the anti-breakage sensing device as the high-voltage capacitance and the capacitance between the anti-breakage sensing device and the grounded shell as the low-voltage capacitance. Then use Ansys finite element software to simulate the situation of line fault occurring in the transmission line with the same tower double-return arrangement and transmission line to analyze the anti-breakage device's anti-interference capability. Finally, the hardware circuit and software program of the anti-breakage device are designed, and a 10 kV transmission line simulation environment is built to test and analyze the device. The test results show that the designed device can measure the induced voltage accurately and in real time, and the measured induced voltage conforms to the variation law of field strength, and the identification accuracy of the device is good, which can meet the use of the transmission line crane antibreakage in the actual environment.