A kind of precise high current transient boost current generating device
A technology of generating device and high current, applied in the direction of measuring device, parts of electrical measuring instrument, measuring electricity, etc., to achieve the effect of small distortion, easy comprehensive test and fast response
Active Publication Date: 2018-02-16
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +2
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However, there is no precise high-current transient boost current generating device that meets all the above requirements.
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[0018] Such as figure 1 Shown is a precise high-current transient up-current generating device, including an IO input device unit, a microcomputer control unit, a digital signal control processing unit, a D / A converter, an A / D converter, an output current acquisition unit, and a high-power A linear current power amplifier unit and a three-phase DC rectified and filtered power supply for supplying power to the high-power linear current power amplifier unit; the IO input device unit is connected to a microcomputer control unit, and the microcomputer control unit is connected to a digital signal control processing unit The digital signal control processing unit is connected with the input terminal of the D / A converter and the output terminal of the A / D converter respectively, and the output terminal of the D / A converter is connected with the high-power linear current The input terminals of the power amplifier unit are connected; the output terminal of the high-power linear curren...
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The invention discloses a transient rising current generating device of precision and large current, which comprises an IO input device unit, a microcomputer control unit, a digital signal control processing unit, a D / A converter, an A / D converter, an output current acquisition unit, A high-power linear current power amplifier unit and a three-phase DC rectified and filtered power supply for supplying power to the high-power linear current power amplifier unit; the present invention collects and measures transient large current signals through the current acquisition unit, and the A / D converter converts The transient high current signal is converted into a digital signal and transmitted to the digital signal control processing unit, and the amplitude and waveform of the transient high current signal are obtained through the operation and processing of the microcomputer control unit. At the same time, the microcomputer control unit completes the operation calculation and processing of various modes of transient signals, and realizes the output of transient analog signals through the control of the D / A converter by the digital signal control processing unit.
Description
technical field [0001] The invention relates to the technical field of power system transient testing, in particular to a precise high-current transient up-current generating device. Background technique [0002] With the rapid development of my country's smart grid construction, various new electronic current transformers are used more and more in UHV power transmission and transformation systems. These advanced electronic current transformers with working principles and methods will sense and detect the power supply current value of the power grid and supply it to the secondary protection and metering device of the power system. The power system uses electronic current transformers to sense and detect the primary current signal, including the steady-state current signal, transient current signal and various fault current signals of the primary current. The protection and metering equipment on the secondary side of the power system are based on these current signals. The s...
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IPC IPC(8): G01R1/28G01R35/02
Inventor 韩伟石光刘磊刘超马伟东宋闯时晨张峰李治兵王成波
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST