微机消谐装置将微机技术用于电网消谐，利用计算机快速、准确的数据处理能力实现快速分析，其选频准确。通过对PT开口三角电压的采集，对电网谐振时的各种频率成份能快速分析，准确地辨别出单相接地、过渡过程、电网谐振。如果是谐振，计算机发出指令使消谐电路投入，实现快速消谐。

The microcomputer detuning device uses the microcomputer technology to eliminate the harmonic in the power grid, and uses the fast and accurate data processing ability of the computer to realize rapid analysis, and its frequency selection is accurate. By collecting the triangular voltage of PT, the various frequency components of the power grid resonance can be quickly analyzed, and the single phase grounding, transient process and power grid resonance can be identified accurately. If it is resonant, the computer sends out instructions to make the harmonic elimination circuit put into order to achieve rapid detuning.

它可以循环检测PT开口三角的电压，当出现电压升高时，首先判断是单相接地，过渡过程还是电网谐振，如果是谐振，计算机发出指令使消谐电路投入，实现快速消谐。故障报警功能：当系统发生单相接地或谐振、装置故障、装置失电时产生报警信号。显示功能：以中文方式显示实时时钟，装置运行状态，接地或谐振故障的母线序号，故障起始时间等。

It can detect the voltage of PT open delta periodically. When the voltage rises, the first judgement is single-phase grounding. The transition process is also the resonance of the power network. If it is resonance, the computer sends out instructions to make the harmonic elimination circuit input and realize the fast harmonic elimination. Fault alarm function: when the system occurs single-phase grounding or resonance, device failure, and the device loses power, the alarm signal is generated. Display function: display the real time clock in Chinese, the operation state of the device, the bus serial number of grounding or resonant fault, the start time of the fault, etc.