LeClairRyan PLLC
Sampling implementation method and device based on conventional sampling goose trip mode
Sampling implementation method and device based on conventional sampling GOOSE trip mode. CPU of master NPI plug-in, after receiving a second pulse, transmits sampling pulse generation time and a transmission enable bit to FPGA of the master NPI plug-in at a fixed interval; after detecting the transmission enable bit, the FPGA of the master NPI plug-in judges whether time of its internal timer is greater than/equal to the sampling pulse generation time, if yes, generates a sampling pulse to FPGA of collection plug-in; after receiving sampling pulse, the collection plug-in carries out A/D sampling, and transmits sampled data to the master NPI plug-in; when detecting that all A/D samplings are completed, the master NPI plug-in transmits data packets to protection CPU plug-in. The device includes an MMI plug-in, a protection CPU plug-in, a master NPI plug-in and a collection plug-in. Protection maloperation is thereby reduced.
Xuchang XJ Software Technology Co., Ltd. XJ Group Corporation XJ Electric Co., Ltd. State Grid Corporation of China
H
H02H
inventional
Feng Jingli Lijuan Maojun Baowei Jidong Shasha Yingying Xu Jirui Chuankun Heke Dongxiao
Xiao Zhang Lv Deng Li Huang Hu Xi Li Chen Ni Ma Yao