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  2. Dynamic line rating for electric utilities - Wikipedia

    en.wikipedia.org/wiki/Dynamic_line_rating_for...

    Spans deemed "critical" – likely to reach thermal or clearance limits first – are monitored in real-time, providing data on their status with respect to safety limits. The state change equation of the conductor, using its thermal features (absorptivity, emissivity) converts data on span geometry into valid temperature data for the "ruling ...

  3. Log–log plot - Wikipedia

    en.wikipedia.org/wiki/Log–log_plot

    The red line represents the 'Median line', while the blue line is the 'Mean line'. This plot illustrates a dataset with a power-law relationship between the variables, represented by a concave line. When both variables are log-transformed, as shown in the right plot of Figure 1, titled 'Log-Log Linear Line with Normal Noise', the relationship ...

  4. Superellipse - Wikipedia

    en.wikipedia.org/wiki/Superellipse

    Examples of superellipses for =, =. A superellipse, also known as a Lamé curve after Gabriel Lamé, is a closed curve resembling the ellipse, retaining the geometric features of semi-major axis and semi-minor axis, and symmetry about them, but defined by an equation that allows for various shapes between a rectangle and an ellipse.

  5. Voltage regulation - Wikipedia

    en.wikipedia.org/wiki/Voltage_regulation

    The entire short line model is an open circuit in this condition, and no current flows in an open circuit, so I = 0 A and the voltage drop across the line given by Ohm’s law V line drop = IZ line is 0 V. The sending and receiving end voltages are thus the same.

  6. Load line (electronics) - Wikipedia

    en.wikipedia.org/wiki/Load_line_(electronics)

    So there are many AC load lines, that vary from the DC load line (at low frequency) to a limiting AC load line, all having a common intersection at the DC operating point. This limiting load line, generally referred to as the AC load line , is the load line of the circuit at "infinite frequency", and can be found by replacing capacitors with ...

  7. Lambert W function - Wikipedia

    en.wikipedia.org/wiki/Lambert_W_function

    The product logarithm Lambert W function plotted in the complex plane from −2 − 2i to 2 + 2i The graph of y = W(x) for real x < 6 and y > −4.The upper branch (blue) with y ≥ −1 is the graph of the function W 0 (principal branch), the lower branch (magenta) with y ≤ −1 is the graph of the function W −1.

  8. Linear regression - Wikipedia

    en.wikipedia.org/wiki/Linear_regression

    A trend line could simply be drawn by eye through a set of data points, but more properly their position and slope is calculated using statistical techniques like linear regression. Trend lines typically are straight lines, although some variations use higher degree polynomials depending on the degree of curvature desired in the line.

  9. Radical axis - Wikipedia

    en.wikipedia.org/wiki/Radical_axis

    For this reason the radical axis is also called the power line or power bisector of the two circles. In detail: In detail: For two circles c 1 , c 2 with centers M 1 , M 2 and radii r 1 , r 2 the powers of a point P with respect to the circles are