3 results about "Power system restoration" patented technology

The present disclosure belongs to the technical field of power system restoration, and particularly relates to an orderly black start method and system of a new energy power generation unit, comprising: acquiring system parameters of the new energy power generation unit; constructing a black start system model of the new energy power generation unit based on the acquired system parameters; evaluating the black start capability of the constructed black start system model to obtain a black start utility output of the new energy power generation unit; and optimizing the start order of the new energy power generation unit according to the acquired system parameters of the new energy power generation unit and the obtained black start utility output, combining an orderly participation algorithm to complete the orderly black start of the new energy power generation unit.

This invention belongs to the field of power system restoration technology, and relates to a method and apparatus for dynamic partitioning of new energy power systems during black start based on Voronoi diagrams. The method includes: mapping black start power sources to Voronoi generators and mapping loads to be restored to Voronoi spatial points; acquiring generator capacity information and generating reliable capacity for new energy black start power sources; generating adaptive weights based on capacity information, reliable capacity, and load density; adjusting the diffusion speed of generators in different directions according to the adaptive weights and performing weighted Voronoi diffusion to obtain preliminary partitions; performing partition constraint verification during diffusion and controlling the corresponding generator to exit diffusion when the constraint reaches the upper limit; triggering update calculation based on new energy output information fed back by SCADA and outputting the partition results. The technical solution of this application can realize online partition updating and executability determination.

The invention discloses a double-layer coordinated power system recovery method and system based on multiple flexible resources. The method comprises the following steps: acquiring basic parameters of a target power system and setting a line recovery rate; solving the upper-layer topology reconstruction model to obtain a generator starting sequence and a skeleton network reconstruction scheme containing a bus connection state; solving the lower-layer flexible resource scheduling model to obtain a load recovery amount and flexible resource scheduling power controlled by a corresponding bus connection state; performing joint solution on the double-layer model by combining a global active power balance equation to obtain a preliminary recovery scheme; and performing physical security verification on the preliminary scheme, and if the verification is not passed, constructing an integer cutting constraint and feeding back the integer cutting constraint to the joint solution for iteration until a final recovery scheme is output. According to the method, strong coupling cooperative scheduling of grid reconstruction and multi-type flexible resources is realized, and the feasibility of global optimization and real power grid landing under extreme disasters is ensured through physical verification and a mutual exclusion constraint iteration mechanism.