高压放电速断装置的研制

Development of High Voltage Discharge Quick Break Equipment

串补工程中密封间隙等设备的放电电压准确性至关重要。为了确保试品多次试验的放电环境基本相同,要求每次试验放电的时间力求最短。该文给出了变压器和谐振升压器2种高压放电试验装置的原理以及改进方案,通过检测主回路电流大小判断间隙是否被击穿,由单片机发出相应控制信号,采用IGBT等开关器件控制试验电压的通断,保证了试品每次试验只进行一次放电,介绍了保护电路的原理,给出了试验波形,证明了此高压放电速断装置的可行性。

The discharge voltage of some equipment like trigatron spark gap and so on in series compensation project is extremely important. To make sure that every time the discharge environment of the sample is almost the same, every time the discharge time should be as short as possible. This paper gives out the principles and improving schemes of transformer discharge equipment and resonance booster discharge equipment. By detecting the current in the main circuit, the gap＇s breaking-down can be identified, and the single chip micro-computer will send out corresponding control signal to make the IGBTs to switch off or cut off the input voltage, by this mean, we can make sure that every time of the experiment, the sample will discharge only once. The paper also introduces the principle of the protection circuit. At last, the experimental waveforms were listed, which prove the feasibility of the high voltage discharge fast switch-off device.