基于等效法的电容式电压互感器铁磁谐振试验研究

摘要

The damping device in parallel on the secondary winding of the intermediate transformer of capacitive voltage transformer (CVT),is the key to the damping of the ferro-resonance.In routine and type test of the production,it’s very necessary for CVT to perform the ferro-resonance test to verify the damping parameters.But there must have some impulse on equipments during performing this test on the products more than 800kv voltage grade.By researching on the equivalent method,avoid the damage to test equipments from the ferro-resonance test with applying high voltage.%并联在电容式电压互感器（简称CVT）中间变压器二次绕组上的阻尼器，是抑制CVT铁磁谐振的关键。在产品的例行试验及型式试验中，均需要对CVT产品进行铁磁谐振试验，以验证阻尼器的设计是否正确。但800kV及以上电压等级产品的铁磁谐振试验瞬间会对试验设备产生较高冲击。本文通过对等效法铁磁谐振试验的研究，避免了在施加较高电压下进行铁磁谐振试验对试验设备造成的伤害。