4results about How to "Realize engineering application" patented technology

The application discloses a comprehensive electronic equipment detonator impedance detection compensation method, and aims at solving the technical problems that the existing comprehensive electronic equipment does not have a detonator impedance detection function, and the impedance detection precision is poor, the expected performance cannot be reached, and the detection difficulty is great. The application improves the detonator impedance test precision and the automation level, and realizes the engineering application of the detonator impedance detection function on the comprehensive electronic equipment. The method can also be popularized and applied to other occasions needing to detect the detonator impedance, and has certain guiding significance for engineering practice.

The invention discloses a three-dimensional FDTD metal conformal stabilization simulation method. The method comprises the steps of grid construction and boundary identification, effective electromagnetic parameter calculation, stability condition pre-verification, field quantity iteration updating and boundary condition convergence judgment. According to the method, high-precision and high-stability electromagnetic simulation of a complex medium boundary and a metal boundary is realized by combining an integral form of the effective dielectric constant and the magnetic conductivity, a posterior weighted stabilization strategy and a strict integral updating rule of the metal boundary, meanwhile, the robustness of an algorithm to a time step length is improved, and the practical application scene of the method is expanded.

This invention discloses a method for determining the dielectric loss factor of power distribution cable insulation for online monitoring. Based on the given information, the method obtains the following: [formula missing - likely a formula for calculating the dielectric loss factor]. By solving the inverse cosine function, [formula missing - likely a formula for calculating the dielectric loss factor] is obtained, which is the phase difference between [formula missing]. The complex effective values ​​of the voltage at the cable's starting end and the voltage at the cable's ending end are obtained. Based on [formula missing], [formula missing] is obtained, and the phase difference β between [formula missing] and [formula missing] is calculated. Based on [formula missing] and β, δ is calculated, and the tangent value tanδ is obtained, which is the desired dielectric loss factor of the power distribution cable insulation. This invention provides a method for online monitoring of the dielectric loss factor of power distribution cable insulation and provides necessary technical support for determining the insulation performance of power distribution cables. It overcomes the drawback of large errors when using the difference between the currents at the beginning and end of the cable to determine the dielectric loss factor, and can be applied in engineering.