Inspired by Nature's catalyst, a nano-size layered manganese-calcium oxide showed a low overvoltage for water oxidation in acidic solutions, which is comparable to platinum.

After a brief historical introduction to the hosting-capacity approach, the hosting capacity is presented in this paper as a tool for distribution-system planning under uncertainty. This tool is illustrated by evaluating the readiness of two low-voltage networks for increasing amounts of customers with PV panels or with EV chargers. Both undervoltage and overvoltage are considered in the studie...

A water vapor electrolysis cell utilizing sulfuric acid as the electrolyte has been shown to be capable of operating efficiently on the typical humidity of cabin air. Concentrated sulfuric acid can absorb enough water from a 50% relative humidity air stream at 75°F to permit an electrolysis cell to c&rate at a current density as high as 150 mA/cm2. . Sulfuric acid was examined for physical prop...

This paper presents an electromagnetic transient analysis of lightning-initiated overvoltage stresses the step-up transformers installed inside a nacelle onshore, multi-megawatt, new-generation wind turbines. The increase in turbine (WT) nominal power output, necessitated introducing transformer into nacelle. A is subjected to completely different from those present if it were at base WT tower....

With the rapid increase in proportion of installed wind power capacity total grid capacity, state has put forward higher and requirements for integration into grid, among which most difficult requirement is zero-voltage ride through (ZVRT) capability turbine. When voltage drops deeply, a series transient processes, such as serious overvoltage, overcurrent, or speed rise, will occur motor, serio...

Abstract In order to limit the temporary overvoltage, method of series current limiting reactor in line is often used power grid overvoltage. The parameters reactance directly affect level 50Hz installation a changes positive and zero sequence impedance line, which has an impact on overvoltage line. Installing 500 kV Line’s studied by using electromagnetic transient calculation software EMTP. s...