Implementing method of protecting IEGT (injection enhanced gate transistor) based on relay protection tripping signal
A realization method and technology of trip signal, applied in the field of control, can solve the problems of unfavorable restoration of production, large amount of debugging works, and high maintenance costs, so as to reduce maintenance costs and the number of spare parts, solve hidden dangers on equipment, and reduce on-site installation costs. Effect
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[0067] use figure 2 The system shown, according to the image 3 In the method shown, the specific implementation steps of blocking the IEGT trigger pulse are as follows:
[0068] 1. The high-voltage "tripping" control signal pulse is output by the microcomputer protection device on the high-voltage feeder, which is triggered by the edge in the transmission system to ensure that once the "tripping" control signal pulse is sent out, the intermediate variable CB_Triping Intent added by the transmission system must be set.
[0069] 2. The intermediate variable CB_Triping Intent and the CB Closing and NO_CB Open signals (given by the transmission system) generate a set signal together through the logic "AND" function module, and the HV_TripIntent signal is obtained through the set module (SR module). This signal can be obtained by Reset signal to reset.
[0070] For the logic diagram of the HV_Trip Intent signal, see Figure 4 .
[0071] 3. Add the HV_Trip Intent signal to the...
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