Introduction and function of high voltage switch
High voltage switch, closing time and synchronization is used to measure the mechanical performance of high voltage circuit breaker, transformer and electrical equipment bridge device, in the entire circuit to play an important role in breaking and closing, measuring the performance of the high voltage switch is also an important factor affecting system safety. Below we share with GDKC series of high voltage switch dynamic characteristics tester the significance of measuring high voltage switch opening time, closing time and synchronization.
The significance of measuring the opening and closing time and synchronization of high voltage switches
First of all, we recommend the use of some high-quality manufacturers of measuring equipment, to ensure the authenticity of the measurement data, the opening time is too long, will inevitably extend the circuit breaker cut fault time, causing oscillating overvoltage, a great threat to the safety of the grid, if the closing time is too long, extend the re-closing time, may cause the collapse of the grid accident, so, The time of splitting and closing is very critical and important to power, and the different synchronization of switching can also bring great harm to the safe operation of the power grid, the different period of time is too long, the circuit breaker is equivalent to non-full phase operation, the unbalanced current generated leads to the misoperation of the relay protection device, the difference between the different periods of closing is too large, affecting the normal neutral point of the power grid, and may harm overvoltage.
The different periods between the fractures in the same pole affect the safety of the circuit breaker itself, if the opening of the same level fracture is not too large at the same time, or even the contact is not separated, it may make its opening, the recovery overvoltage borne by the contact exceeds the allowable value, and the arc cannot be extinguished resulting in an explosion, if the same pole fracture is not too large at the same time, resulting in the pre-breakdown time generated during closing in advance, increasing the closing burden of the structure. The rigid closing speed is reduced, and the static contacts and moving contacts are fused and refused to move.
The above is to measure the role and harm of high voltage switch, closing time and synchronization, in the usual preventive test project, try to measure each function, can effectively prevent the occurrence of accidents.
Post time: Jul-26-2024