Relay
[Transmission flow solver (network)]

Detailed Description

The primary relay time is determined by $T_p=TimeDial\left(A_p+\frac{B_p}{M_p^{C_p}-1}\right)$.

The reset time is determined by $T_r=TimeDial\left(\frac{B_r}{1-M_r^{C_r}}\right)$.

Five relay curves are supported:

\[ \begin{array}{ c c c c c c } Coeff & U_1 & U_2 & U_3 & U_4 & U_5 \\ Ap & 0.0226 & 0.1800 & 0.0963 & 0.0352 & 0.00262 \\ Bp & 0.0104 & 5.9500 & 3.8800 & 5.6700 & 0.00342 \\ Cp & 0.0200 & 2.0000 & 2.0000 & 2.0000 & 0.02000 \\ Br & 1.0800 & 5.9500 & 3.8800 & 5.6700 & 0.32300 \\ Cr & 2.0000 & 2.0000 & 2.0000 & 2.0000 & 2.00000 \end{array} \]

The current curves are implemented according to SEL-551 Instruction Manual (Google that)

GridLAB-DTM Version 2.0
An open-source project initiated by the US Department of Energy