A Control Strategy for Synthetic Making Test at Full Voltage Based on Pre-arcing Current Detection and Phase Control

摘要

The synthetic making test has been widely used in evaluating the break ability of high-voltage circuit breaker. However, the test research and application are still inadequate, especially in the condition of rated voltage. According to the realistic conditions of test stations in China, a control strategy based on pre-arcing current detection and phase control is proposed in this paper. A model of control system made up of the DSP TMS320LF2407A is fabricated, in which the CPLD MAX7064 is used to transmit signals for EMC design. It can be applied in full voltage synthetic making test at a level of 126kV/63kA. The test results show that, it is accurate to control the making phase of the applied voltage, whether the closing is demanded at voltage peak or zero.