Power system harmonic wave detection system
A power system and harmonic detection technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of cumbersome process, inability for users to detect and view harmonic parameters and amplitudes of power systems, and reduce the amount of calculation. Effect
Inactive Publication Date: 2019-03-19
ZHONGXIANGBOQIAN INFORMATION TECH CO LTD
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Problems solved by technology
It solves the problem that the current power system harmonic detection system is cumbersome and cannot provide users with real-time detection and viewing of the parameters and amplitudes of power system harmonics
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[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.
[0031] figure 1 A structural diagram of a power system harmonic detection system provided for an embodiment of the present application, as shown in figure 1 It includes: a current transformer 101 , a signal processor 102 , a level shifter 106 , an AVR microcontroller 107 , a computer 108 , and a regulated power supply 109 .
[0032] Wherein, the signal processor 102 specifically includes: a current-to-voltage converter 103, a voltage amplifier 104, and a low-p...
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The invention relates to a power system harmonic wave detection system. The system comprises a current transformer, a signal processor, a level shifter, an AVR single chip microcomputer, a regulated power supply and a computer; the current transformer generates reduced current and transmits the reduced current to the signal processor; the signal processor converts the current into voltage, performs amplification and filtering and transmits a low-frequency voltage signal to the level shifter, then the low-frequency voltage signal is converted into a target voltage signal and transmitted to theAVR single chip microcomputer, the target voltage signal is subjected to analog-to-digital conversion and converted into digital standard voltage, the amplitude of each harmonic wave is obtained and then sent to the computer for display and observation, and the regulated power supply is in communication with the AVR single chip microcomputer and is used for stabilizing the conversion rate of an analog-digital converter. Through the system, the problem that a power system harmonic wave detection process is cumbersome is solved, the effect of reducing the cost of the system is achieved, the calculation amount for amplitude analysis of the harmonic waves is decreased, and a user can detect the harmonic parameters and amplitude in real time.
Description
technical field [0001] The invention relates to the technical field of power system analysis, in particular to a power system harmonic detection system. Background technique [0002] With the development of social economy, electric energy has become more and more important in various industries and people's lives, and at the same time, the quality of electric energy itself has a greater impact on the entire power system. The ideal waveform of voltage and current in the power system is a sinusoidal waveform with an operating frequency of 50H or 60Hz. However, as the scale of the power system becomes larger and larger, various power electronic equipment, electrified railways and other nonlinear loads increase sharply, resulting in The waveforms of grid voltage and current deviate from the standard sinusoidal waveform, which distorts the waveforms of voltage and current, that is, generates harmonics. As a result, the pollution of harmonics in the power system becomes increasing...
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IPC IPC(8): G01R23/165
CPCG01R23/165
Inventor 曾庆生张跃进黄德昌李波李光辉胡勇
Owner ZHONGXIANGBOQIAN INFORMATION TECH CO LTD