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随着国民经济的不断发展,直流大电流的运用极为广泛,例如直流输电,电气铁路,化工厂、冶炼厂的电解工艺等等。如何精确计量直流大电流,同时也精确测量电压,电能和电量,并随时记录电流、电压、功率的波动情况,极为重要,研究解决直流大电流的计量问题是一项迫切和重要的任务。我国目前对直流大电流系统的测量方法大致有二种:1.分流器法,2.直流互感器法。分流器法测量直流大电流是比较老的方法,虽然它在许多场合下仍被应用,但是在测量过高的直流大电流时它受到限制,特别是在现场使用分流器,更不适合。直流互感器的运用,可以克服分流器法测量大电流时所带来的限制,在我国,目前直流大电流系统的测量主要采用直流互感器。去年我厂在华中工学院电磁测量研究室的指导和
With the continuous development of the national economy, the use of DC high current is very extensive, such as DC transmission, electric railway, chemical plants, smelter electrolytic process and so on. How to accurately measure DC high current, accurately measure voltage, power and power, and record current, voltage and power fluctuations at any time is extremely important. It is an urgent and important task to study and solve the problem of DC large current measurement. At present, there are roughly two kinds of measurement methods for DC large current systems in our country: 1. Shunt method, 2. DC transformer method. The shunt method is an older method of measuring large DC currents and although it is still used on many occasions, it is limited in the measurement of high DC currents, especially in the field where shunts are not suitable. The use of DC transformers can overcome the limitations of the current divider method when measuring large current. In China, DC current transformers are mainly used in the measurement of DC high current systems. Last year, I plant in Huazhong Institute of electromagnetic measurement laboratory guidance and