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Ormazabal Transformer Division
Success stories, Sustainable buildings & insfrastructures
The first pilot of the smart transformer was installed in our Ormazabal Transformer Division (January 2017), one of the industrial facilities of Ormazabal (Loeches, Madrid), to keep the voltage stable and to assess Conservation Voltage Reduction (CVR) strategy taking into account the reactive compensation and PV generation. CVR aims to achieve a significant reduction of peak demand at no cost, by means of load shedding.
15 / 0.42 kV, 630 kVA;
1% step voltaje
Reactive Power Compensator:
Test results show a clear dependence between voltage and power values: active and reactive.
As an illustration, we show two figures, where it can be observed that by decreasing the voltage we can reduce the power consumed.
CVR enables the reduction of peak demand and contributes to energy saving by decreasing the voltage magnitudes down to the minimum allowable limits without affecting the performance of the end devices. The reduction in energy demand is dependent on the types of loads connected. CVR is more effective with constant impedance or constant current loads, where a reduction in voltage leads to a reduction in power. In addition, losses could be reduced for constant impedance loads due to reduced current. Factory test results confirmed the existence of relation between voltage changes and active/reactive power reduction.
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