For the load power loss due to power grid failure or equipment maintenance

it has now become an essential function of looking for a power supply path for the power lost load in a lot of power grid analysis software. The grid can be divided into several electric islands through the topological analysis program. The traditional searching algorithm for island restoration of power supply path based on the tree search method is inadequate in path searching. Inspired by the Internet routing protocol algorithm

all kinds of electric islands are regarded as routers while a kind of search algorithm based on distance vector is put forward. Through the formation of initial routing tables and routing table update processing

the entire network routing table of each island is eventually obtained

through which all the possible power supply paths of power losing electric islands in conformity with dispatching schedules can be obtained. By using the optimal power flow of the interior point method

the feasibility of power solutions is verified as is the algorithm effectiveness on an IEEE 14-bus standard test system.