High voltage measurement includes steady-state high voltage measurement, impulse high voltage measurement and pulse high voltage measurement.
DC high voltage measurement is an engineering technology that studies the generation, measurement, testing and application of various high voltages and large currents. It is an important part of high voltage technology. High-voltage testing technology is mainly used for insulation testing of power equipment, current interruption testing of switching equipment, over-voltage testing of power systems, and experimental research on various types of discharge phenomena.
In addition to traditional application fields, it is also widely used in various industries such as machining, textiles, printing, dust removal, exploration, and medical care, and has become a high-tech application for lasers, high-energy particles, and thermonuclear fusion. An indispensable technical means in the field.
There are many types of high voltage tests and applications, which require the application of various steady-state or transient high voltages and large currents. Commonly used steady-state high voltages include power frequency AC voltage and DC voltage, which are used as test voltage or working voltage.
Commonly used transient high voltages and large currents include impulse voltage, impulse current, and power frequency oscillation current. The former simulates lightning overvoltage or operating overvoltage, and the latter two simulate lightning current and short-circuit current respectively. In addition, there are some special square wave voltages, square wave currents, strong current pulses, and nanosecond-level nuclear electromagnetic pulses (NEMP).