1) Real-time security distance calculation.
Then, based on the load development trend and security distance calculation, security development trend is obtained.
A steady-state security distance (SSD) is an effective security margin that describes the distance of an operation point (OP) from steady-state security region boundaries.
The security distance of feeder loads can be used as reference to determine the minimum output of DGs.
While this procedure can predetermine the DSSR boundary and calculate security distance online, by which operators can judge the system N − 1 security.
The main novelty is the direct definition of thousands of heliostat coordinates through basically two parameters i.e. a simplified blocking factor and an additional security distance.
Once the system becomes insecure, the feeders or transformers, of which the security distance is negative, would be found out immediately through real-time monitoring and alarming.
Different from traditional model to optimize nodal voltages and network losses mainly, the objective functions of the new optimizing control model also include security distance and load equilibrium.
Moreover, we strengthen the basic functions with some new security analysis functions such as real-time security distance calculation, security boundary visualization and calculation of output range of DGs.
Moreover, the location of an operating point in DSSR can be expressed as the distance from the operating point to all the security boundaries, abbreviated as SD (security distance).
