Balun MMIC power amplifier, broadband test device and broadband test method

Through the combination of Barron MMIC power amplifier and differential circuit, the problem of high-frequency current signal amplification is solved, the comprehensive performance evaluation of the current transformer is achieved, and the fault positioning accuracy and reliability of the power system are improved.

CN120474502AInactive Publication Date: 2025-08-12ZHILIAN XINNENG POWER TECH CO LTD
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Patent Information

Application Number
CN202510967441.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-14
Publication Date
2025-08-12
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing broadband test devices for traveling wave current transformers cannot accurately capture high-frequency signals, resulting in inaccurate performance evaluation of the current transformers in transient situations, affecting the safe and stable operation of the power system. At the same time, the traditional test process lacks testing of transient waves, which reduces the accuracy and reliability of traveling wave fault positioning.

Method used

The Barron MMIC power amplifier is adopted, combined with a 1:1 Barron differential circuit and a 1:K Barron differential circuit, and by converting a weak high-frequency current signal into a differential signal and performing high gain amplification, it suppresses common mode interference, ensuring signal quality and anti-interference ability. Combining steady-state and transient wave testing methods, a comprehensive evaluation of current transformer performance is carried out.

Benefits of technology

It improves the accuracy and comprehensiveness of the broadband test of the current transformer, improves the accuracy and reliability of traveling wave fault positioning, and meets the precise evaluation requirements of the current transformer performance of the power system.

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Abstract

The invention relates to a balun MMIC power amplifier, a broadband testing device and a broadband testing method.The balun MMIC power amplifier comprises a 1: 1 balun differential circuit, an MMIC power amplifier body and a 1: K balun differential circuit, and the problem of high-frequency current signal amplification is solved; the broadband testing method comprises the following steps: carrying out steady-state wave testing on the current transformer to be tested through the broadband testing device; carrying out transient wave testing on the current transformer to be tested through the broadband testing device; and testing the traveling wave positioning function of the current transformer based on the traveling wave head, testing the accuracy of the traveling wave fault positioning function of the current transformer to be tested, and generating a traveling wave positioning function test report. Based on the application of a Balun MMIC power amplifier and the optimization of a test process, the invention aims to solve the key problems in the prior art, improve the accuracy and comprehensiveness of the broadband test of the current transformer, and meet the urgent demand of a power system for the accurate evaluation of the performance of the current transformer.
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