The current development trend of digital energy meters is mainly reflected in the following aspects: display mode, power consumption of the entire meter, measurement accuracy, multi-function measurement, anti-theft function, and control function. The power industry's requirements for the measurement accuracy of energy meters have been increasing year by year, and the measurement accuracy of energy meters has improved, which is a market highlight for energy meter manufacturers. At the same time, the power meter's requirements for power consumption are becoming more and more strict. On the one hand, it is necessary to control the power consumption of the energy meter itself during normal measurement; It also relates to the power consumption of a power failure liquid crystal display.
The prevention of power theft has always been a function that the power industry has paid more attention to. In the past, mechanical watches were difficult to achieve the function of preventing theft of electricity. After the digitization of the energy meter, it can partially prevent some theft of electricity. Functions have not been widely promoted and applied. Stimulated by foreign markets, the domestic energy meter market is also heating up. The power industry's demand for anti-theft functions, especially zero-line grounding, hot-wire short-circuiting, and zero-line stealing metering functions, is gradually increasing.
There are two types of display methods for digital watt-hour meters in current applications, namely, counters and liquid crystals. The current development trend is the increasing proportion of liquid crystal displays, which means the overall development of energy meters. With the escalation of market competition, the multifunctional trend of energy meters is becoming increasingly apparent. At present, the multi-rate measurement of active power is more common in the market, but there are no practical requirements for multi-parameter measurement, such as reactive power, apparent power, voltage effective value, current effective value, frequency, and phase. However, with the continuous upgrade of market competition, some watt-hour meter manufacturers are already developing multi-function watt-hour meters with multiple parameters.