Abstract
In the past years, strong changes of power network architectures and operation have led to make use of huge quantities of instrumentation, spread around the grid. In fact, there is a strong need to perform very accurate measurements of electrical quantities in many nodes of the network, mainly due to the strong penetration of distributed generation. Recently, the main Italian utility has also asked for such kind of instrumentation. Its main feature must be to perform accurate measurements in all actual conditions. Such conditions include the instrumentation operation during the off-nominal condition of the network. To this purpose, in this paper, a low-cost acquisition system (AS) developed by the authors is recalled. Then, a full comparison with off-the-shelf products during ideal or not power source is provided. The obtained results highlight the potentialities of the developed system for its implementation in both laboratory or medium-/low-voltage (MV/LV) networks.
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