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To improve the firing circuit security and reliability, methods of control and detection was put forward for firing circuit. The electronic information relevant knowledge is applied to blasting engineering technology, including signal transmission technology, signal emitting and receiving technology and computer technology, etc. Through judging the digital signal to send and receive and using computer technology, network connections and detonating situation can be showed indirectly. So methods can reach. Besides, that can attain other purposes have, such as monitoring network, checking the situation of explosive material initiating and judging blast hole whether to explode or not.

This paper listed the mathematic model of transmission line firstly, and PSASP was used to simulate the fluctuate voltage of transformer substation which affected by wind generate electric power capacity which combined to the grid changed and the power flow of XINJIANG sent into GANSU changed. At the end, the conclusion and construction of improve grid running state was presented.