A portable fast pulse generating device and its manufacturing method

Abstract

The invention discloses a portable fast pulse generating device and a manufacturing method thereof, comprising: a high-frequency PCB circuit board, a main loop structure, a secondary loop structure, a power supply and a load; both the primary loop structure and the secondary loop structure are built on a high-frequency PCB circuit board; the main circuit structure includes the main capacitor C 1 , mercury switch and filter module; all components of the main circuit structure are in a straight line; the secondary circuit structure includes a high-voltage DC voltage source and a charging resistor R 1 ; High voltage DC voltage source and charging resistor R 1 Used to form the main capacitor C 1 The charging circuit; the power supply is used for the power supply of the high-voltage DC voltage source; the power supply is also used for the triggering of the mercury switch; the load is connected to the high-frequency PCB circuit board through the SMA plug and the SMA socket. The invention miniaturizes the signal source used to generate the electromagnetic wave for calibration, and can meet the calibration requirement of the ultra-high frequency sensor for partial discharge measurement under actual working conditions on site.

Description

technical field [0001] The invention belongs to the technical field of calibrating partial discharge sensors of gas-insulated and enclosed combined appliances (GIS), in particular to a fast pulse generating device for calibrating partial discharge sensors, in particular to a portable fast pulse generating device and a manufacturing method thereof. Background technique [0002] Partial discharge is the most important and effective method for evaluating the insulation state of gas-insulated combined electrical equipment (GIS). When partial discharge occurs in GIS equipment, signals such as light, sound, mechanical vibration and electromagnetic waves will be generated. The current partial discharge detection technology carries out corresponding research work around the above characteristic parameters. The pulse current method given by IEC-60270 is one of the most widely used detection methods at this stage, but the bandwidth of its detection equipment is tens to several thousa...

AI Technical Summary

Problems solved by technology

The voltage amplitude of the signal source used in this method is at the highest level of hundreds of V, and the volume is relatively large. Compared with the GTEM cell, the on-site real GIS will cause greater attenuation of the signal, so this signal source cannot be used

On the other hand, although this method can obtain the theoretical equivalent height of the sensor, it cannot obtain the measurement sensitivity when the electromagnetic propagation environment is a true GIS, that is, it cannot carry out the calibration work under the actual working conditions on site.

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