Non-contact high-voltage nuclear phase device

Abstract

The invention belongs to the field of nuclear phase devices, and relates to a non-contact high-voltage nuclear phase device which is mainly composed of a nuclear phase reference standard and a wireless nuclear phase device. The nuclear phase reference standard comprises a shell, an insulating hook, a plate capacitor type electric field sensor, a nuclear phase reference circuit, a battery jar and an electric quantity indicating lamp; the wireless nuclear phase device comprises a shell, a distance measurement insulation probe, a plate capacitance type electric field sensor, a nuclear phase measurement circuit, a battery jar and an acousto-optic display circuit. The nuclear phase reference standard is mainly used for detecting a power grid signal and providing a reference signal for nuclear phase; the wireless nuclear phase device detects a high-voltage signal of a to-be-phasing line in a non-contact manner, and compares and analyzes the high-voltage signal with a received reference signal, thereby achieving the phasing purpose. The device is small in size and portable, can achieve the non-contact electricity testing, frequency measurement and multi-point nuclear phase of a line in ahigh-voltage electric field environment, and greatly improves the safety and reliability of a nuclear phase result.

Description

technical field [0001] The invention belongs to the technical field of nuclear phase devices, and relates to a non-contact high-voltage phase nuclear device. Background technique [0002] In the power system, the detection of the phase and phase sequence is very important. Before the grid connection of different power grids in the power system, the new substation, the transmission line, the reconstruction and expansion of the substation, and the three-phase The phase verification test of the circuit, the correct phase verification is the premise of safe electricity use. At present, the most commonly used high-voltage phase nuclear device on the market is a double-rod contact high-voltage phase nuclear device. Its working mechanism is that the high-voltage power lines of the two phases to be nuclear phase are directly introduced into the comparison circuit of the nuclear phase device after being stepped down by a long drag line through a large resistor. By detecting the magn...

AI Technical Summary

Problems solved by technology

However, the phasor based on the discrete Fourier algorithm and correlation analysis method has strict synchronization requirements, high hardware performance and software design requirements, and insufficient stability; the phasor based on zero-crossing detection and waveform transformation is susceptible to environmental interference, and its accuracy is low. poor

[0004] Therefore, the high-voltage nuclear phase device in the prior art has defects such as high synchronization requirements, easy to be disturbed by the environment, high operating voltage, cumbersome nuclear phase steps, and insufficient stability.

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