With the construction of ubiquitous electric Internet of things

the requirements of building smart transmission lines is put forwarded.As an important armour clampe for HVDC（high-voltage direct current） transmission lines

the tension splice connector will deform under the action of vibration

heat

stress and other factors

which affects the safety of transmission line.To solve this problem

we propose a state-aware technology for HVDC transmission line tension splice connector in this paper.Firstly

the capacitance deformation model is built and the law of capacitance change caused by the bending deformation of capacitor plate is analyzed.Secondly

the stress of the tension splice connector after deformation is simulated by using the finite element method

and the range of monitoring the tension splice connector deformation value is selected.Thirdly

the capacitance with different deformation is simulated in electrostatic field

and it is found that the relationship between the deformation value and the capacitance is quadratic function.Finally

the tension splice connector state-aware system is designed in detail from three aspects:sense node

edge node and cloud service platform.The sense node is integrated on the tension splice connec--or

which measures the capacitance value change caused by the deformation of the splice tube and sends the data to the edge node through LoRa.After receiving data from multiple sense nodes

the edge node calculates the amount of deformation and sends it to the cloud platform through 4 G.The cloud platform collects all data and displays it in the background

and users can view it through phones.