Analysis of Power System Voltage Stability Based on Equivalent Impedance in Real Time
zhu shaobi1; jiang chun2; chen jijun3; gao hong4(1.xuanwei power supply company; qujing 655400; china; 2.qinghai power supply company; xining 810000; china; 3.chizhou power supply company; chizhou 247100; china; 4.qujing power supply company; qujing 655400; china)
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Design of Intelligent Alarm System for Substation
yang haoran1; liu qi2; zheng lianqing2(1.guiyang power supply bureau; guiyang 550002; china; 2.electrical engineering college of chongqing university; chongqing 400044; china)
..............page:7-10,21
Design of Two-wire 4 to 20mA Meter Power Supply
wang lijun; tian liang; deng tuoyu (school of control science and engineering; north china electric power university; baoding 071003; china)