What are the system components of the lightning impulse test device

The lightning impulse test device is the core equipment for simulating lightning overvoltage to test the insulation strength of power equipment. Its system composition needs to meet the requirements of high voltage generation, precise waveform control, safety protection, and data acquisition and analysis. A complete lightning impulse test device usually consists of the following core components:

① Impulse voltage generator: This is the core component of the device, which generates lightning impulse waveforms that comply with international standards through capacitor charging and series discharge. Its output voltage range can range from tens of kV to thousands of kV, meeting the testing requirements of equipment at different voltage levels.

② Measurement system: including voltage dividers (such as resistive voltage dividers, capacitive voltage dividers), oscilloscopes, data acquisition cards, etc., used to accurately measure the peak value, waveform parameters, and insulation breakdown voltage of impulse voltage, ensuring the accuracy and reliability of test data.

③ Control system: Adopting PLC or industrial computer control to achieve automated operation of the test process, including charging voltage regulation, discharge triggering, data recording and analysis, etc., reducing human operation errors and improving test efficiency.

④ Auxiliary equipment: including high-voltage leads, protective resistors, grounding systems, etc., to ensure personnel safety and equipment stability during the test process, and to avoid electromagnetic interference caused by impulse voltage affecting the test results.

The ZCCJ-800kV/80kJ impulse voltage generator adopts a four column H structure, with a steel bracket consisting of a single flange and a parallel external single capacitor, forming a stable structure consisting of one stage. The main equipment is of 8 levels, forming a combined tower structure, with each level stacked step by step for easy disassembly and maintenance, and the overall structure is stable.

This set of equipment is mainly designed to meet the lightning full wave and steep wave waveform tests of electrical equipment such as power insulators.The basic configuration of the equipment includes a charging device, an impulse voltage generator body, a weak damping capacitor voltage divider, a steep wave device, a fast resistor voltage divider, and other control and measurement devices.

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