Method and system for generating power distribution network black start scheme

Abstract

The invention provides a method and a system for generating a power distribution network black start scheme. The method comprises the steps of determining the maximum load capability of a power distribution network start power source according to the available devices in the power distribution network and the output characteristics of the power distribution network start power source, generating corresponding network topological structures, selecting the target network topological structure according to a first constraint parameter corresponding to the power distribution network and determining a load connection state and the maximum load capacity, determining the load connected in each of a plurality of power distribution network paths in the target network topological structure according to the load connection state and the maximum load capacity, re-determining a plurality of optional power distribution network paths according to the load in each power distribution network path, searching for feasible power distribution network paths according to a second constraint parameter, and evaluating the feasible power distribution network paths according to evaluation parameters, thereby establishing a target power distribution network. Due to the technical scheme of the method for generating the power distribution network black start scheme, in case of large-area power failure of the power distribution network, power supply to partial loads can be recovered due to the self-start and the independent operation capability of the power distribution network start power source.

Description

technical field [0001] The invention relates to the technical field of black start, in particular to a method for generating a distribution network black start scheme and a system for generating a distribution network black start scheme. Background technique [0002] Black start refers to the process that after the entire system is powered off due to a fault, without relying on the help of other systems, the units with self-starting capabilities in the system are driven to drive the units without self-starting capabilities, and the power supply range of the system is gradually expanded, and finally the entire system is fully restored. . At present, the research in the field of black start mainly focuses on the transmission network, and its main research results are shown in the following aspects: [0003] (1) Research on black start power supply. The black start power supply units in the transmission network mainly include: gas turbines, hydroelectric units with low head a...

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Problems solved by technology

[0007] In addition, the distribution network is usually radial, and the constraints are different from the transmission network; factors such as voltage conversion times and capacity transmission distance are not the main considerations in the distribution network, and the optimization goals of the transmission network are also different from those of the distribution network. , so many research results in the transmission network cannot be used in the distribution network

At the same time, the black start power source in the traditional distribution network often utilizes the power source in the power plant or thermal power plant, which is too large to be used in the small distribution network

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