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Power generation transfer distribution factor fast calculation method for tie line power control

A technology for transferring distribution factors and connecting line power, which is applied in the direction of single-network parallel feeding arrangement, etc., can solve the problems of calculation failure, computer memory and calculation time consumption, and large calculation amount, so as to reduce the calculation scale and enhance the practical value of engineering , the effect of high computational efficiency

Active Publication Date: 2015-03-11
TSINGHUA UNIV +1
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Problems solved by technology

For a large-scale power system composed of multiple regional and provincial power grids, the number of rows and columns of the power generation transfer distribution matrix reaches tens of thousands, and the amount of calculation is huge, which will consume a lot of computer memory and computing time. In large cases, it may even lead to calculation failure

Method used

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  • Power generation transfer distribution factor fast calculation method for tie line power control
  • Power generation transfer distribution factor fast calculation method for tie line power control
  • Power generation transfer distribution factor fast calculation method for tie line power control

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here can be used to explain the present invention, but not to limit the present invention.

[0020] The present invention provides a fast calculation method for power generation transfer distribution factor used in tie line power control, the specific implementation is as follows figure 1 shown, including the following steps:

[0021] 1) The global power grid is regarded as the regional power grids connected by tie lines (a total of N A area), divide all the nodes of each regional power grid into tie line node set T and internal node set I;

[0022] Let n be the serial number of the regional grid, n=1,2,…,N A ; The global power grid is the sum of the regional power grids connected by tie lines; all nodes in each regional power grid are divided into tie line nodes (that is, nodes ...

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Abstract

The invention relates to a power generation transfer distribution factor fast calculation method for tie line power control and belongs to the field of power system automation. The method includes: dividing all the nodes of each regional grid into a tie line node set T and an internal node set I; respectively building the original node admittance matrix and network equation of each regional grid when tie lines are not considered; eliminating the internal node set I of each regional grid through network simplification and only retaining the tie line node set T of each regional grid to obtain a tie line node equivalent admittance matrix and an internal node injected transfer matrix; constructing the admittance matrix, only containing the tie lines and the tie line nodes, of a global power grid, and generating the equivalent admittance matrix of the global power grid; constructing the tie line node-tie line associated matrix and tie line reactance diagonal matrix of the global power grid; calculating the power generation transfer distribution factor of each power generator node inside each regional grid to each tie line. The method is high in calculation efficiency, low in implementation difficulty, and high in practical value.

Description

technical field [0001] The invention belongs to the technical field of power system automation, and in particular relates to a fast calculation method for power generation transfer distribution factors used for tie-line power control. Background technique [0002] For a long time, due to the unbalanced distribution of energy resources and regional economic development in my country, the power supply and demand of regional power systems have been unbalanced. Therefore, trans-regional and inter-provincial power transmission has become a necessary means to ensure the overall safe and economical operation of the power system. Especially in recent years, with the gradual construction of UHV power grids, the ability to exchange power across regions and provinces has been greatly improved, and the ability to optimize the allocation of sufficient energy resources has effectively promoted the efficient and economical operation of the national power system, thereby ensuring the econom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46
CPCH02J3/46
Inventor 赖晓文钟海旺夏清康重庆
Owner TSINGHUA UNIV
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