Electrical power system black-start scheme generation method based on dynamic programming

Abstract

The invention discloses an electrical power system black-start scheme generation method based on dynamic programming. The electrical power system black-start scheme generation method adopts the idea of gradually deducing black-start recovery operations, operation sequences with low recovery efficiency or quality are reduced gradually by means of state reduction technology, so that the process of decision making after the full enumeration of recovery conditions and cohesive relations thereof of all elements of the whole grid, which is required in technology such as Petri network technology, is avoided, and efficiency of algorithm is improved while requirements for computing storage capacity are lowered. Without any hypothesis of black-start recovery phase, each recovery operation can be chosen freely from all types, optional combination of restart of a generator unit, grid recovery and load recovery is allowed to carry out according to needs, problems of over-high voltage of line nodes in early stage of black start and inadaptability of the grid to the load recovery in later stage of black start are easy to solve, and the electrical power system black-start scheme generation method is naturally adaptable to different power grid after-fault scenes.

Description

technical field [0001] The invention belongs to the technical field of power system recovery control, and more specifically relates to a method for generating a black start scheme of a power system based on dynamic programming. Background technique [0002] The black start of the power system usually means that after the entire system is out of service due to cascading failures and other reasons, without the help of external network power supply, the units with self-starting ability in the system are started, and the units without self-starting ability are driven to gradually expand the system. The scope of restoration of power supply, and ultimately the restoration process of the entire power system. The many blackouts that have occurred around the world since the 1960s show that there are always hidden dangers in the modern power system that may lead to the expansion of the scope of the accident due to improper handling of local faults. Therefore, as a preventive measure, ...

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Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a dynamic programming-based power system black start scheme generation method, which can provide a refined recovery timing scheme that takes into account all components, improves algorithm efficiency, and reduces the need for calculation Storage requirements, easy to overcome the problem that the voltage of the line node is too high in the early stage of the black start, and the grid structure is not suitable for load recovery in the later stage, and at the same time naturally adapt to different scenarios after the grid failure

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